JPH0763111B2 - Case structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The housing structure of the present invention will be described according to the following items.

A. Industrial fields of use B. Overview of the invention C. Background art D. Problems to be solved by the invention E. Means for solving the problems F. Example a. Overview of charger [Fig. 1 To FIG. 7] b. Circuit board [FIG. 1, FIG. 4, FIG. 8, FIG. 11 and FIG.
Figure] c. Code [Figure 1, Figure 4 to Figure 8] d. Molded body [Figure 1 to Figure 7, Figure 9 to Figure 14] d-1. Upper housing part [First Figure 3, Figure 4, Figure 4, Figure 6,
7, 9 and 11 to 14] d-2. Substrate holding part [Figs. 1 to 4, 11 and 12]
[Fig.] D-3. Operation part [Figs. 1 to 3, Fig. 7, Fig. 11, Fig.
Fig. 12] d-4. Coupling of substrate holding part and operating part [Fig. 2, Fig. 3,
11 and 12] d-5. Coupling of upper housing part and substrate holding part [Figs. 3 and 4]
Fig. 11, Fig. 12, Fig. 12] d-6. Holding the circuit board on the board holding portion [Fig. 4, Fig. 11]
Fig., Fig. 12] d-7. Lower casing part [Fig. 1, Fig. 5 to Fig. 7, Fig. 9 to Fig. 14] d-7-a. Structure d-7-b. Upper part Connection with housing [Figs. 5 to 7, Fig. 7]
11 to FIG. 14] d-8. Battery storage section [FIG. 1, FIG. 5 and FIG. 10 to FIG. 14]
[Fig.] D-9. Lid part [Fig. 1, Fig. 5, Fig. 6, Fig. 9, Fig. 13]
Figure, Figure 14] e. How to use the charger f. Modified example of the operation part [Figure 15, Figure 16] G. Effect of the invention (A. Industrial field of application) The present invention is a novel housing Regarding the structure. More specifically, a device having a housing, which is wholly or partially formed of synthetic resin, and an operation knob for operating an operated member such as a switch or performing some operation, such as a radio receiver or a tape recorder. The present invention relates to a housing structure for electronic devices, etc., and by making the housing, the operation knob, and other predetermined members into a single-part structure, the manufacturing cost of this kind of device can be significantly reduced. At the same time, it is an object of the present invention to provide a novel housing structure in which the assembling work can be easily performed and the dimensional accuracy among the members can be made uniform.

(B. Outline of the Invention) The casing structure of the present invention has a casing formed entirely or partially of synthetic resin, and has an operating knob and an elastic member for constantly urging the operating knob in a predetermined direction. In a housing structure of a device requiring the provision of a housing, a housing part forming all or a part of the housing, an operating knob, and an elastic arm for constantly urging the operating knob in a predetermined direction are made of synthetic resin. By integrally molding by, through-holes are formed in the housing portion, a connecting piece that plays a role of connecting the operation knob to the housing portion is integrally molded via at least one thin hinge portion, The manufacturing cost of this type of equipment is obtained by inserting the operation knob, which is to be provided inside the housing by bending the thin hinge portion, into the through hole and exposing the operation knob to the outside of the housing. Significantly reduced It is Rukoto, the assembling work can be easily performed, and, in which to be able to equalize the dimensional accuracy between the respective members.

(C. Background Art) For example, an electronic device such as a radio receiver or a tape recorder usually has a substantially box-shaped casing called a cabinet or the like, and a knob or a knob for operating a predetermined switch. Various operation knobs such as knobs for unlocking the lid for opening and closing the battery housing are provided, and further, one or a plurality of circuit boards on which a predetermined circuit is formed, or various mechanisms are incorporated. A mechanical chassis etc. are provided.

By the way, in recent years, many of the casings and operation knobs of such devices are made of synthetic resin.
In many cases, a plurality of partial casings called case halves or the like are integrally combined with each other to form a box-shaped outer casing.

Many of the operation knobs described above are required to be movably supported on the housing side and always provided in a state of being biased in a predetermined direction. Therefore, it is general that some kind of elastic member such as a spring is associated with such an operation knob.

Therefore, in such a device, at least a casing member, an operating knob, and an elastic member that form the casing are required, and more than one of these members may be required.

(D. Problems to be Solved by the Invention) As described above, in electronic devices and the like, one or more housing members, operation knobs, and elastic members are required. Since they were manufactured as separate parts, they had various problems as follows.

That is, since the housing member, the operating knob, and the elastic member are manufactured as separate parts, the number of parts is increased, and accordingly, the number of molding dies is also large, and the number of molding steps is large. There is a problem that it is difficult to reduce the manufacturing cost. In particular, as is well known, since the cost of the molding die occupies a very large proportion in the manufacturing cost of this kind of equipment, the number of these dies is extremely important for reducing the cost of electronic equipment. It is an element.

And, if the number of parts is large, the number of assembling steps will increase accordingly, and the parts management also requires a lot of labor.
There is also a problem such as a cause that makes automatic assembly by an automatic assembly machine difficult.

Furthermore, the dimensional accuracy of the members formed by the molding dies is slightly different when the dies used are different. Therefore, the greater the number of members formed by the different dies, the more There is also a problem that the dimensional accuracy of the device becomes large and the assembly and operation may be hindered in some cases.

Incidentally, as a means for reducing the number of parts by integrally forming a plurality of members constituting the device, for example, there is one shown in Japanese Utility Model Laid-Open No. 57-61877, This is one in which a partial case forming a part of a housing and a battery housing portion are integrally formed, and a lid for opening and closing the battery housing portion is integrally formed in the battery housing portion via a hinge portion.

(E. Means for Solving Problems) In order to solve the above-mentioned problems, the housing structure of the present invention includes a housing part, an operation knob, and an operation knob that constitute all or part of the housing. A connecting piece that integrally forms an elastic arm that constantly urges in a predetermined direction with synthetic resin, forms a through hole in the housing portion, and plays a role of connecting the operation knob to the housing portion. Is integrally molded through at least one thin hinge portion, and the operation knob to be disposed inside the housing by bending the thin hinge portion is inserted into the through hole to insert the operation knob of the housing. It is designed to be exposed to the outside.

Therefore, according to the present invention, since the housing portion, the operation knob, and the elastic member for urging the operation knob can be configured by one member having a single-piece structure, an electronic device or the like can be formed. These components that are essentially provided in the above can be one component.

(F. Examples) The details of the housing structure of the present invention will be described below with reference to the examples shown in the accompanying drawings.

The embodiment shown in the drawings applies the housing structure of the present invention to the housing structure of a portable charger.

(A. Outline of Charger) [Figs. 1 to 7] 1 is a portable charger.

The charger 1 includes a molded body 3 in which an external structure that forms the housing 2 and an internal structure that is located inside the housing 2 are integrally formed of synthetic resin, a circuit board 4, and a cord. 5 and 5 contact terminals 6, 7, 8, 9 and 10 for the battery.

Then, the molded body 3 is the upper housing portion 11 that constitutes the housing 2.
A lower housing portion 12, a lid portion 14 for opening and closing a battery housing portion 13 formed in the lower housing portion 12, a board holding portion 15 mainly for holding the circuit board 4, and a circuit board. The operation part 16 has a knob for operating a switch mounted on the switch 4 and an elastic member for urging the knob in a predetermined direction, and these five parts 11, 12, 14, 15 and 16
Predetermined ones of these are rotatably connected to each other via a thin hinge portion. That is, the upper housing 11 and the lower housing 12 are connected via the hinges 17 and 17, the upper housing 11 and the lid 14 are connected via the hinge 18, and the upper housing 11 is connected. The body portion 11 and the substrate holding portion 15 are connected via a hinge portion 19 (see FIGS. 3 to 6, FIG. 11 and FIG. 12), and the substrate holding portion 15 and the operating portion 16 are hinge portions 20. ,
It is connected through 20.

Further, the operating portion 16 is connected to the substrate holding portion 15 by overlapping the substrate holding portion 15 so as to be folded as shown in FIG. 2, and the substrate holding portion 15 and the operating portion 16 thus combined are connected to each other. Is connected to the upper housing 11 by folding it so that it fits inside the upper housing 11, as shown in FIG. The circuit board 4 is held in the board holding portion 15 in this state as shown in FIG. 4, for example. Furthermore, by folding the upper casing 11 and the lower casing 12 from the state shown in FIG. 4 so that their outer peripheral portions abut against each other, for example, as shown in FIG. The box-shaped housing 2 is configured, and the battery housing portion 13 is located in the housing second. Further, the internal structure including the substrate holding portion 15 and the operation portion 16 is the housing. 2, that is, it is located inside the external structure. The battery housing portion 13 is closed by the lid body portion 14 by folding the lid body portion 14 with respect to the housing 2 as shown in FIG.

The contact terminals 6, 7, 8, 9 and 10 are incorporated in the side wall portion of the battery housing portion 3, and the cord 5 has one end portion soldered to the circuit board 4.

(B. Circuit board) [Fig. 1, Fig. 4, Fig. 8, Fig. 11, Fig.
12] The overall shape of the circuit board 4 is viewed in the left-right direction (the left diagonal downward direction in FIG. 1 is the left side, and the right diagonal upward direction is the right side. The direction toward the front is the front side, and the direction toward the upper left is the rear side Note that FIG. 1 shows the molded body 3 in a state in which its respective parts are expanded, and this is shown in FIGS. 6 and 7. The orientation of each of the above parts is partially inverted in the assembled state as shown in Fig. 4, but for convenience of explanation, the orientation is based on the above-mentioned direction.) In addition, a notch 4a is formed in the corner where the front side edge and the left side edge intersect, and is cut out in a substantially trapezoidal shape, and a substantially circular shape is formed at the corner where the rear side edge and the left side edge intersect. A first positioning hole 21 is formed, and further the rear side edge and the right side edge are formed. A second positioning hole 22 having a substantially oval shape is formed in a corner portion where is intersected with.

The hot side wiring pattern 25 is formed on the surface 23 (hereinafter, referred to as a "pattern formation surface") of the two board surfaces 23 and 24 of the circuit board 4 which is shown in FIGS. 1 and 4. And a ground-side wiring pattern 26 (only a part of which is shown) are formed, and the solder is substantially projected at a position slightly separated from the first positioning hole 21 of the hot-side wiring pattern 25 to the right. Hot side contact terminal formed by forming hemisphere
27 is provided, and the earth is formed by raising the solder into a substantially convex hemisphere at a position in the earth side wiring pattern 26 that is slightly separated from the second positioning hole 22 toward the front left diagonally. Side contact terminals 28 are provided.

Reference numeral 29 is a notch for engagement formed at a substantially middle portion of the right side edge of the circuit board 4 in the front-rear direction.

Further, of the two board surfaces of the circuit board 4, the surface 24 (hereinafter referred to as "mounting surface"), which is shown in FIG. 8, has a light emitting diode 30 for emitting red light, a power switch 31,
The IC 32 and other various circuit components not shown are mounted, and the terminals of these circuit components are on the pattern forming surface 23.
It is soldered to a predetermined portion of the wiring pattern formed on.

The light emitting diode 30 is composed of a main body portion 30a having a substantially cylindrical shape that is short in the axial direction, a substantially pin-shaped light emitting portion 30b protruding from the upper end surface of the main body portion 30a, and terminals 30c and 30c. It is located in the approximate center.

The power switch 31 is provided at a position closer to the left side of the engaging cutout 29 of the mount surface 24, and is composed of a substantially box-shaped case 31a, a sliding shaft 31b, and a terminal (not shown). The tip of the sliding shaft 31b is positioned so as to project substantially rearward from the case 31a, and the case 31a is supported by the switch holding fitting 33 mounted on the circuit board 4. The power switch 31 is configured such that the circuit is switched from ON to OFF or from OFF to ON by pressing the sliding shaft 31b toward the case 31a side. Is the operation unit 16 of the molded body 3.
It is designed so that it can be pressed by a knob to be described later (c. Code) [Fig. 1, Fig. 4 to Fig. 8] The code 5 is charged by the electric power of the dry battery loaded in the charger 1. A cord for supplying a device, for example, a portable radio receiver or a television receiver, and its two lead wires 5a and 5b.
The base end portion (see FIG. 1) is the pattern formation surface of the circuit board 4.
Soldered separately to the connection terminal portions 25a, 26a of the hot side wiring pattern 25 and the ground side wiring pattern 26 formed on 23, and a flexible locking portion 34 is formed at a position near the base end thereof. The plug 35 is connected to the tip. 36 is a plug pin. A substantially annular locking groove 34a is formed on the outer periphery of the locking portion 34, and the plug 35
The main part of is formed to have a substantially hexagonal columnar shape in its appearance.

(D. Molded body) [Figs. 1 to 7 and 9 to 14] (d-1. Upper housing part) [Figs. 1, 3, 4, and 6]
FIG. 7, FIG. 9, FIG. 9, FIG. 11 to FIG. 14] The upper housing 11 includes a top plate 37 that forms a top plate portion of the housing 2 and a peripheral wall 38 formed along the outer peripheral edge of the top plate. It is formed in the shape of a basin with a substantially rectangular shape.

The top plate 37 has a width, that is, a length in the left-right direction that is slightly longer than the length in the left-right direction of the circuit board 4, and the length in the front-rear direction is approximately the length in the left-right direction. The plate is formed in a substantially rectangular plate shape having a length of about twice, and the front end portion 37a is obliquely bent so as to be gradually displaced downward as it goes to the front end.

Reference numeral 39 denotes a substantially rectangular knob arrangement hole formed in the top plate 37, and the knob arrangement hole 39 is formed at a position near the right end edge of the top plate 37 near the front end portion 37a.

Reference numeral 40 denotes a display hole formed on the top plate 37 at a position slightly separated from the knob placement hole 39 to the left, and the light emitting portion of the light emitting diode 30 supported by the circuit board 4 in the display hole 40.
The tip of 30b is located.

A notch 41 having a substantially trapezoidal shape when viewed from the front-rear direction is formed in a portion of the lower end of the rear side portion 38a of the peripheral wall 38 excluding the left and right end portions, and both front and rear sides of the center portion of the left-side portion 38b in the front-rear direction. Two housing engaging grooves 42, 42 (see FIG. 14; only one is shown in the drawing) extending in the front-rear direction are formed at the position.

Further, the following engaging claws are formed on the inner peripheral surface of the peripheral wall 38 near the lower edge.

That is, the first and second housing locking claws 43, 44 are formed at positions separated from each other in the left-right direction on the front side portion 38c of the peripheral wall 38, and the trapezoidal notch portion 41 of the rear side portion 38a of the peripheral wall 38 is formed. Third and fourth housing locking claws 45 and 46 are formed near both sides of the peripheral wall 38 of the peripheral wall 38 between the two engaging grooves 42 and 42 and the rear side thereof. Do not place the fifth and sixth positions at the rear of the engaging groove 42.
The housing locking claws 47 and 48 are formed on the right side portion of the peripheral wall 38.
A holding portion locking claw 49 is formed at a position substantially corresponding to the knob arrangement hole 39 formed in the top plate 37 of 38d. still,
The locking claws 43, 44, 45, 46, 47, 48, and 49 form a sloped surface inwardly facing the inside of the upper housing portion 11 toward the upper end. Moreover, the upper surface thereof is formed as the locking plane perpendicular to the inner surface of the peripheral wall 38.

50 is the holding portion locking claw 49 of the inner surface of the right end portion 38d of the peripheral wall.
Is a holding portion engaging groove formed at a position on the rear side and on the upper side.

Further, 51 is a lid claw engaging portion formed in a portion of the right side portion 38d of the peripheral wall 38 in the front-rear direction from a central portion in the front-rear direction, and the lid claw engaging portion 51 has an outer peripheral portion from the left side. It is formed so as to form a gate shape when viewed, and the lower end surface thereof is located at a position slightly lower than the lower end surface of the peripheral wall 38, and the entire inner portion of the gate shape is a recess 51a that is recessed toward the right side. It has become.

Then, most of the lower end portion of the right side portion 38d of the peripheral wall 38 other than the portion where the lid claw engaging portion 51 is formed is, for example, as shown in FIG. It is formed on the slopes 52, 52 that are displaced inward, and the slopes similar to the slopes 52, 52 are located at the rear side and the front side of the upper end portion of the left side portion 38b of the peripheral wall 38 with the center portion sandwiched therebetween. 53, 54
(See FIGS. 11 to 13).

(D-2. Substrate holding part) [FIGS. 1 to 4, FIG. 11 and FIG.
[Fig. 12] Reference numeral 55 denotes a main portion of the substrate holding portion 15, and the main portion 55 is formed in a rectangular plate shape that is long in the left-right direction and has an overall shape that is substantially the same as that of the circuit board 4. A wall portion 56 that extends in a substantially U shape along the rear end edge and the left and right end edges of the lower surface and that has a height lower than the height of the peripheral wall 38 of the upper housing portion 11.
(See FIG. 3) are formed. Further, at the rear portion of the right side portion 56a of the wall portion 56, a connecting piece 57 having a substantially triangular shape when viewed from the front-rear direction and a substantially rectangular shape when viewed from above is formed, and The right end edge of the connecting piece 57 is integrally connected to the ridge line portion on the left side of the slope 54 formed near the front end of the left side portion 38b of the peripheral wall 38 of the upper casing 11, and the connected portion is It is the hinge portion 19 described above.

Reference numeral 58 is an operation portion overlapping surface that occupies a portion of the front portion from the substantially central portion of the main portion 55 in the front-rear direction, excluding the right end portion,
The operation portion overlapping surface 58 is positioned lower than the upper surface of the other portion of the main portion 55 by the plate thickness of the main portion 55, and has its front end portion 58.
The a is formed on a slope that makes a front descent. The slope of the slope is approximately the same as the slope of the front end 37a of the top plate 37 of the upper housing 11, and the slope extends to the front end of the right end of the main portion 55. . Then, small engaging projections 59, 59 'are formed at both left and right end portions of the operation portion overlapping surface 58 near the front end portion 58a. Further, a notch 60 having a substantially shape when viewed from above is formed at a substantially central portion of the front end portion 58a of the operation portion overlapping surface 58 in the left-right direction, and the lower end portion of the notch portion 60 has a notch portion 60a. An elastic piece 61 is formed which is connected to the lower end portion of the rear surface, and an upper portion from the connected lower end portion is positioned away from the rear surface toward the front side, and the upper end portion of the elastic piece 61 has a front side portion. An operation portion locking claw 61a that is projected toward is formed.

As can be seen clearly from FIG. 3, a portion 62 of the lower surface of the main portion 55 corresponding to the cutout portion 60 (hereinafter, referred to as “substrate supporting protrusion”) has a U-shape. Is projected downwards.

Further, the front end portion of the right end portion of the main portion 55 is a cord locking portion 63 which is substantially shaped when viewed from above, and the lower end portion of the cord locking portion 63 is shown in FIGS. 3 and 4. As is clear from the above, a notch 63 that extends to a position slightly lower than the lower surface of the main portion 55 and that is substantially U-shaped when viewed from the front is formed at the lower edge of the intermediate piece of that shape. A projecting piece 64 is provided so as to project substantially horizontally from a substantially central portion in the height direction toward the front.

Reference numeral 65 denotes a pusher disposition hole formed in the left end portion of the main portion 55 and having a substantially cross shape, and the pusher disposition hole 65 is a hole for disposing a pusher of a knob described later. Further, elongated holes 66, 66 'extending in the front-rear direction are formed at positions on the left and right sides of the main portion 55, which are spaced apart from the pressing element placement hole 65, and the main portion
Guide ridges 67, 67 extending in the front-rear direction are formed at positions on the upper surface of 55 that are continuous with both front and rear ends of a portion of the cruciform shape of the pressing element placement hole 65 extending in the front-rear direction.

68 and 68 '(see FIG. 3) are formed so as to project downward from the rear end portion of the lower surface of the main portion 55, that is, the left and right end portions of the wall portion 56 near the rear side portion 56b. Substrate supporting protrusions having a substantially columnar shape, the lower end surfaces of the substrate supporting protrusions 68 and 68 'are positioned at substantially the same height as the lower end surface of the substrate supporting portion 62, and a circular engagement is provided on the lower end surface. Mating protrusions 68a and 68'a are formed.

69 is a locking piece projecting downwardly from a position on the lower surface of the main portion 55, which is obliquely spaced from the right side substrate supporting projection 68 to the right obliquely forward, and is provided at the lower end of the locking piece 69. A board locking claw 69a is formed so as to project toward the left side. Reference numeral 70 denotes an elastic piece that is provided so as to project downward from a lower end edge of a substantially central portion of the left side portion 56c of the wall portion 56 in the front-rear direction.
A substrate holding claw 70a protruding rightward is formed at the lower end of the substrate holding claw 70a.

The board holding claws 69a and 70a are positioned at substantially the same height, and the circuit board is provided between each upper end surface of the board holding section 62 and the lower ends of the board supporting projections 68 and 68 '. Four
There is about the same dimensional difference as the plate thickness of.

Reference numeral 71 denotes a substantially circular protrusion formed on the substantially central portion of the upper surface of the main portion 55, and a recess 72 is formed at a position corresponding to the protrusion 71 on the lower surface of the main portion 55. Through small holes 73
Are formed.

A portion 74 between the elastic piece 70 and the rear end portion of the wall portion 56 and the left side portion 56c (hereinafter, referred to as "held portion") is inclined so as to be gradually displaced to the left side as it goes to the lower end. The engaging projection 75 is formed at a position near the rear end of the locked portion 74.

(D-3. Operation part) [Figs. 1 to 3, Fig. 7 and Fig. 11
FIG. 12, FIG. 12] 76 is a connecting piece of the operating portion 16, and the connecting piece 76 is a substrate holding portion.
15 has a length substantially equal to the length in the left-right direction of the operation portion overlapping surface 58, and is formed into a plate shape whose overall shape when viewed from above is a substantially flat shape, and when viewed from the left-right direction, is substantially V-shaped. The projection 77 is locked at a position corresponding to the notch 60 of the above-mentioned shape formed in the front end portion 58a of the operation portion overlapping surface 58 of the substrate holding portion 15 in the portion near the rear edge thereof.
Is formed, and an elongated hole 78 extending in the left-right direction is formed on the front side of the locked projection 77.

In addition, the left and right ends of the V-shaped bent portion of the connecting piece 76, that is,
A circular small fitting hole is provided at a position corresponding to the engaging projections 59, 59 'formed on the operation portion overlapping surface 58 of the substrate holding portion 15.
79, 79 'are formed, and a plurality of protrusions are formed on the inner peripheral surface of the fitting holes 79, 79'.

Then, the connecting piece 76 is formed on the rear end edge of the locking projection 77.
Of the front end edge of the main portion 55 of the substrate holding portion 15 are located on both the left and right sides of the notch 60 of the same shape. It is continuous with the part. That is, the continuous portion forms the hinge portions 20 and 20.

Reference numeral 80 is an operation button for operating the power switch 31 provided on the circuit board 4. The operation button 80 includes a base portion 81 having a substantially square plate shape, a knob 82 formed on an upper surface of the base portion 81, and a pusher 83 positioned so that most of the knob 82 projects downward from the lower surface of the base portion 81. Consists of. And
The base portion 81 has a length of one side of the square that is slightly shorter than the length in the front-rear direction of the substrate holding portion 15, and a position corresponding to the left end portion of the main portion 55, that is, the left end portion of the connecting piece 76. It is located in front of. Further, the knob 82 has a length in the left-right direction that is substantially equal to the size in the left-right direction of a knob placement hole 39 formed in the top plate 37 of the upper housing 11, and the upper surface of the base 81. It is formed at a substantially central portion in the front-rear direction, and a concave portion 84 is formed on the lower surface of the base portion 81 at a position corresponding to the knob 82.

The presser 83 is formed to have a substantially rectangular plate shape that is long in the up-down direction, and most of the recess 84 formed in the base 81 in the front-rear direction has a substantially central portion in the left-right direction. Positioned so that it hangs from
Both front and rear ends thereof are positioned so as to hang from the lower surface of the base 81, and reinforcing ribs 85, 85 having upper ends continuous in the recess 84 are formed on both left and right side surfaces thereof.

Further, engagement grooves 86, 86 extending in the front-rear direction are formed in portions of the lower surface of the base portion 81 located on both front and rear sides of the presser 83, and the widths of the engagement grooves 86, 86 are set to the substrate holding portion 15. It has a width substantially equal to the width of the guide ridges 67, 67 formed on the upper surface of the main part 55.

87, 87 are elastic pieces formed so as to project downward from the substantially central portion in the front-rear direction of the portions along the left and right edges of the lower surface of the base 81, and at the lower end portions of the elastic pieces 87, 87. Engaging claws 87a, 87a are formed so as to project outward from each other.

Reference numeral 88 denotes an elastic piece for constantly urging the operation button 80 rearward (in a state where it is incorporated in the housing 2), and the elastic piece 88 is a substantially horizontal U-shape long in the left-right direction. The bent portion is positioned on the right side, and one of both end portions located on the left side is connected to the connecting piece 76 and the other is the base portion 81 of the operation button 80.
Is continuous at the corner where the front end face and the right end face intersect.

(D-4. Connection between substrate holding part and operating part) [Figs. 2 and 3
FIG. 11, FIG. 12, FIG. 12] Then, the substrate holding unit 15 and the operation unit 16 configured as described above are coupled as follows.

That is, when the operating portion 16 is folded over the substrate holding portion 15 from above with the hinge portions 20 and 20 as the center of rotation, the operating portion 16
The connecting piece 76 and the elastic piece 88 of are the operation part overlapping surface of the substrate holding part 15.
58, the locked projection 77 is attached to the operating portion locking claw 61a, and the fitting holes 79, 7
9'is positioned so as to face the engaging projections 59, 59 'separately from above, and the operation button 80 is positioned so as to face the left end of the main portion 55 from above. When the connecting piece 76 and the operation button 80 are pressed against the substrate holding portion 15 from this state, the rear end edge of the locked projection 77 is operated by the operation portion locking claw 61a, as can be seen clearly in FIG. And the engaging projections 59, 59 'are press-fitted into the fitting holes 79, 79', respectively, and as can be seen clearly in FIG. And the reinforcing ribs 85, 85 are inserted into the cross-shaped pusher disposition hole 65 formed in the main portion 55, and most of them are positioned so as to project downward from the presser disposition hole 65, and The elongated holes 66, 66 'in which the dowels 87a, 87a are formed in the main portion 55.
2 is engaged with the opening edge on the lower side from below, and further, as can be seen clearly from FIG. 2, engagement grooves 86, 86 formed in the base 81 of the operation button 80 are formed in the main portion 55. The guide ridges 67, 67 are slidably positioned.

As a result, the connecting piece 76 of the operating portion 16 is positioned on the operating portion overlapping surface 58 of the substrate holding portion 15, and the state is such that the locked projection 77 and the operating portion locking claw 61a are engaged and fitted. The fitting holes 79, 79 'and the engaging projections 59, 59' are held by press fitting. Further, the operation button 80 is slidably supported by the main portion 55 in the front-rear direction by the engagement claws 87a, 87a thereof being slidably engaged with the long holes 66, 66 'of the main portion 55. The operating direction is guided by the guide ridges 67, 67 formed on the main portion 55.

The engaging claws 87a, 87a of the operation button 80 are the long holes of the main portion 55.
When engaged with 66, 66 ', the resilient piece 88 has been deflected such that the distance between the two ends located on the left side is reduced, as best seen in FIG. It is deformed into a shape, and thus an elastic force is generated between its two ends, which tends to move in opposite directions. As a result, the operation button 80 is always urged by a backward moving force, and when the forward pressing force is not applied to the operation button 80, the resilient piece 87, 87 has the elongated hole 66, It is held at a position (hereinafter referred to as "non-pressed position") in contact with the rear edge of 66 '.

(D-5. Coupling of upper housing part and substrate holding part) [Fig. 3,
4, 11, and 12] Further, the substrate holding portion to which the operation portion 16 is coupled in this manner
15 is connected to the upper casing 11 as follows.

That is, from the state shown in FIG.
When the top plate portion 37 of the upper housing 11 is folded from below with the center of rotation as the center of rotation, the main portion 55 is positioned so as to face the portion near the front end of the top plate 37 from below, and
The lower end portion of the locked portion 74 formed on the left side portion 56c of the wall portion 56 is attached to the upper surface of the holding portion locking claw 49 formed on the right side portion 38d of the peripheral wall 38 of the upper housing portion 11 from above. The engaging projection 75 formed on the engaged portion 74 is positioned in proximity to the holding portion engaging groove 50 formed on the right side portion 38d of the peripheral wall 38 from substantially below. In addition, the knob 82 of the operation button 80 is located in the knob placement hole 39 formed in the top plate 37, and further, the circular protrusion 71 formed in the main portion 55 is formed in the top plate 37. It is located close to the display hole 40 from below. When the substrate holding portion 15 is pressed against the top plate 37 from this state, the lower end surface of the locked portion 74 of the substrate holding portion 15 is located on the upper housing portion 11 as can be seen clearly in FIGS. 3 and 11. 7, the engaging projections 75 of the substrate holding portion 15 are inserted into the holding portion engaging holes 50 of the upper housing portion 11, and the holding portion engaging claws 49 of FIG. As can be seen clearly in FIGS. 11 and 12, the upper end of the knob 82 of the operation button 80 is a knob placement hole.
It is projected upward from 39, and the circular protrusion 71 is on the top plate 37.
It will be positioned so as to come into light contact with the portion where the display hole 40 is formed from below.

Therefore, in the substrate holding portion 15, the locked portion 74 is the holding portion locking claw.
By being engaged with 49 from above, the folded state of the top plate 37 of the upper casing 11 is retained, and the engagement protrusion 75 is mainly engaged with the retaining portion engagement groove 50. As a result, the positional deviation in the front-rear direction is prevented, so that the position with respect to the upper casing 11 is maintained.

As can be seen clearly in FIG. 12, the small hole 73 formed in the circular protrusion 71 formed in the substrate holding portion 15 is a top plate.
It is almost continuous with the display hole 40 formed in 37.

Then, the board holding portion 15 is arranged at the front end portion of the upper housing portion 11, the operation portion 16 is located between the board holding portion 15 and the top plate 37, and the operation button 80 is operated by the operation button 80. Knob 82
Are to be operated by being pressed from the outside of the top plate 37.

(D-6. Holding the circuit board in the board holding portion) [Fig. 4, Fig.
11, FIG. 12] The circuit board 4 is held by the board holding portion 15 as follows.

That is, for example, after the molded body 3 is assembled to the state shown in FIG. 3, the circuit board 4 is oriented so that the pattern forming surface 23 faces downward, and first, the central portion in the front-rear direction of the portion along the left end edge thereof. The portion of the locking piece 69 provided on the substrate holding portion 15 is located on the substrate holding claw 69a provided on the substrate holding portion 15, and the first and second positioning holes thereof are provided.
The circuit board 4 is pressed downward while aligning 21 and 22 with the lower end surfaces of the cylindrical substrate supporting projections 68 and 68 'provided on the substrate holding portion 15. Then, as can be seen clearly from FIG. 11, the upper opening edge of the first positioning hole 21 of the circuit board 4 and the upper opening edge of the second positioning hole 22 of the circuit board 4 are formed on the board supporting protrusions 68, 68 '. A board of the above type in which the board holding portion 15 is formed so that the board holding portion 15 is abutted on the lower end surface of each board, and as shown in FIG. The substrate supporting projection 6 is brought into contact with the lower surface of the supporting portion 62 and is inserted into the first and second positioning holes 21 and 22.
The engaging projections 68a, 68'a of the 8, 68 'are engaged with each other, and further, as can be seen clearly from FIGS. 4 and 12, the engaging notch 29 of the circuit board 4 holds the board. The elastic piece 70 of the portion 15 is engaged with the substrate holding claw 70a from above.

Therefore, the circuit board 4 is brought into contact with the board supporting portion 62 and the board supporting protrusions 68, 68 'at three points thereof, and the left and right ends thereof are respectively engaged with the board holding claws 69a, 70a from above. As a result, the substrate holding portion 15 is held so as to cover it from below, and the positioning holes 21 and 22 of the substrate holding portion 15 engage with the engaging protrusions 68a and 68'a of the substrate supporting protrusions 68 and 68 '. Are engaged with each other to position the substrate holding portion 15.

When the circuit board 4 is thus held by the board holding portion 15, the power switch supported by the circuit board 4 is held.
31 is located on the front side of the pusher 83 of the operation button 80, and its sliding shaft 31 is well understood from FIGS. 11 and 12.
b is located close to the front end surface of the pressing member 83 from the front side.

As can be seen from FIG. 12, the light emitting diode 30 has a main body portion 30a whose upper end portion is a main portion 55 of the substrate holding portion 15.
Located in the circular recess 72 formed in the recess 72, and the light emitting portion 30b thereof is formed in the recess 72, the hole 73 and the top plate 37.
It will be inserted into the display hole 40 formed in the. Therefore, the light emitting portion 30b of the light emitting diode 30 is positioned so that it can be seen from the outside of the top plate 37.

The circuit board 4 can be held on the board holding portion 15 even in the state shown in FIGS. 1 and 2.

Further, as shown in FIG. 4, the locking portion 34 of the cord 5 has the cord locking portion 6 formed in the substrate holding portion 15 in the locking groove 34a thereof.
By engaging the U-shaped notch 63a formed in 3 with the U-shaped notch 63a, the base end portion is held by the substrate holding portion 15.

(D-7. Lower case part) [FIG. 1, FIG. 5 to FIG. 7, FIG. 9 to FIG. 14] Next, the lower case part 12 will be described.

(D-7-a. Structure) 89 is a bottom plate of the lower housing part 12. The bottom plate 89 is an upper housing part
It has a size substantially the same as the outer shape of 11, and has a large opening in the portion between the position closer to the rear end by a distance of about a third of the length in the front-rear direction from the front end edge and the position closer to the rear end. The portion 90 (see FIG. 5) is formed, and the opening 90 is formed.
A portion that forms a substantially rectangular frame shape along the opening edge of (91) and is hereinafter referred to as a "cover overlapping portion". ) Is located at a position slightly lower than the other parts, and both left and right end portions 91a and 91b thereof are located closer to the inside of the part than the other parts.

Reference numeral 92 denotes a peripheral wall formed along the outer peripheral edge of the upper surface of the bottom plate 89, so that the portions of the lid overlapping portion 91 along the left and right end portions 91a and 91b are located closer to the inner side of the baffle than the other portions. There is. The peripheral wall 92 is, as a whole, the peripheral wall 38 of the upper casing 11.
It has a height of about half of the height.

Also, as shown in FIG. 5, the rear edge of the bottom plate 89 can be seen clearly,
The portion excluding the left end portion is bent so as to be displaced and positioned toward the front side from the left end portion, and the notch portion 93 having a substantially U-shape when viewed from below is formed at the portion displaced and positioned toward the front side. The upper notch 9 of the rear side 92a of the peripheral wall 92.
The portion along 3 is formed so as to have a substantially L shape when viewed from the left side.

Reference numeral 94 denotes a plug holding plate formed so as to extend substantially horizontally rearward from a portion of the upper end edge of the rear end portion 92a of the peripheral wall 92 substantially corresponding to the cutout portion 93, and 95 denotes the peripheral wall 92. It is a plug holding piece projecting rearward from a position on the right side of the cutout portion 93 in the rear side portion 92a.

Then, a notch 96 is formed in a portion of the left side portion 92b of the peripheral wall 92 corresponding to the lid claw engaging portion 51 formed in the upper casing 11.
(See FIGS. 1 and 5) are formed.

Further, the following engaging portions are formed on the front side portion 92c and the right side portion 92d of the peripheral wall 92.

That is, in the front side portion 92c of the peripheral wall 92, the first and second casing members are respectively located at positions corresponding to the first and second casing engaging claws 43 and 44 formed in the upper casing portion 11, respectively. Joint portions 97 and 98 are formed, and the rear side portion 92a of the peripheral wall 92 is located at a position corresponding to the third and fourth casing locking claws 45 and 46 formed on the upper casing portion 11 in a special manner. The third, fourth housing engaging portions 99, 100 (see FIG. 9) are formed, and the fifth, sixth, and seventh portions formed on the upper housing portion 11 of the right side portion 92d of the peripheral wall 92. The fifth, sixth, and seventh housing engaging portions 10 are provided at positions corresponding to the housing locking claws 47, 48, and 48 '.
1, 102, 103 (see FIG. 10) are formed. Then, these housing engaging portions 97, 98, 99, 100, 101, 102 and 1
Of the 03, the first, second, third, fourth, and seventh housing engaging portions 97, 98, 99, 100, and 103 are short, generally gate-shaped protrusions on the upper edge of the peripheral wall 92. It is formed by forming a piece and forming a recess in the inner portion of the portal shape. The housing engaging portions 101 and 102 shown in FIGS. 5 and 6 are formed by cutting out a predetermined portion of the upper end portion of the peripheral wall 92, which is slightly projected toward the right side.

104 is a notch formed in a position corresponding to the cord locking portion 63 formed in the substrate holding portion 15 in the front end portion 92c of the peripheral wall 92.

Reference numeral 105 denotes a cord holding piece formed to project at a corner portion where the front side portion 92c and the left side portion 92b of the peripheral wall 92 intersect, and 106 at a position near the rear end of the left end portion 92b of the peripheral wall 92.

Then, the notch 9 in the upper edge of the left side portion 92b of the peripheral wall 92.
The part except the part where 6 is formed is bent at a substantially right angle to the left side and is formed thin, and the left edge of the part formed thin is the right side of the peripheral wall 38 of the upper housing part 11. Department
The right side edges of the sloped portions 52, 52 formed on the lower end surface of the 38d are integrally continuous with each other, and the connected portions are the hinge portions 17, 17.

(D-7-b. Connection with upper casing) [Figs. 5 to 7]
FIG. 11, FIG. 11 to FIG. 14] Then, the upper housing part 11 and the lower housing part 12 are coupled as follows.

It should be noted that this connecting step is a step shown in FIG. 4, that is, a step to be performed from a state in which the board holding portion 15 is connected to the upper housing portion 11 and the circuit board 4 is held in the board holding portion 15. is there.

The upper housing part 11 and the lower housing part 12 are coupled to each other by folding these two housing parts 11 and 12 around each other with the hinge parts 17 and 17 as the center of rotation, and by surrounding the peripheral wall 38 of the upper housing part 11. This is done by pressing the lower end edge of the lower end and the upper end edge of the peripheral wall 92 of the lower end housing 12 so as to abut against each other.

That is, when these two housing portions 11 and 12 are butted to each other as described above, the first to seventh seven housing locking claws 43, 44, 45, 46 formed on the upper housing portion 11 47, 48 and 48 '
And the first to seventh housing engaging portions 97, 98, 99, 100, 101, 102 and 103 formed on the lower housing portion 12 are engaged with each other. As a result, as shown in FIGS. 5 to 7, the upper casing 11 and the lower casing 12 are engaged with each other.

As a result, the casing 2 having a relatively thin and substantially box shape is formed, and the substrate holding portion 15, the operating portion 16 and the circuit board 4 are located inside the casing 2.

The front end portion 92c of the peripheral wall 92 of the upper casing 11 and the lower casing 12 is
The notch 104 formed on the substrate holding portion 15 is located below the projecting piece 64 of the cord engaging portion 63 formed on the substrate holding portion 15, whereby the cord outlet 107 (the fifth portion) is formed on the front end surface of the housing 2. Figure,
(See FIG. 6) is formed, and the cord 5 is the cord exit 10
It will be led out of the housing 2 from 7.

(D-8. Battery compartment) [Figs. 1, 5, 10 to 10]
[FIG. 14] The battery housing portion 13 is connected to the bottom plate 89 of the lower housing portion 12 and is positioned so as to project upward from the bottom plate 89. The battery receiving plate and side plates located at both front and rear ends thereof. It consists of and.

That is, 108 is the battery receiving plate of the battery housing portion 13, and the battery receiving plate 108 is the opening 9 formed in the bottom plate 89 of the lower housing portion 12.
The main part 10 has the same size as that of 0 and is bent in a substantially shape when viewed from the front-rear direction, except for the left and right ends of the shape.
Reference numeral 9 denotes four gutter-shaped portions 109 extending in a substantially gutter-like shape in the front-rear direction.
a, 109b, 109c and 109d are formed side by side in the left-right direction, and the lower end portions of the left and right end portions 110, 111 thereof are respectively formed on the left and right end portions 91a, 91b of the lid overlapping portion 91 formed on the bottom plate 89. Separately and continuously.

And four gutter-shaped portions 109a, 109b, 109C and 1 of the main portion 109.
09d of the leftmost 109a and the third from the left 109c of each front end and the second 109b from the left and the rightmost 109d of the rear end of each 109d The cutouts 112, 112, ... Having a substantially trapezoidal shape when viewed from the direction are formed.

In addition, the peripheral wall of the lower housing portion 12 of the left side portion 110 of the battery receiving plate 108
A notch 113, which is substantially shaped when viewed from the left side, is formed at a portion corresponding to the left side portion 92b of the 92, and a decorative frame 114 is provided along the edge of the notch 113 (see FIGS. 1 and 13). Are formed.

Reference numeral 115 denotes a front side plate of the battery storage portion 13, and the front side plate 115 has its upper end and left and right ends connected to the front end of the battery receiving plate 108.
Moreover, the lower end thereof is continuous with the front end portion 91c of the lid stacking portion 91. Reference numeral 116 denotes a rear side plate of the battery housing section 13. The rear side plate 116 has its upper end and left and right ends connected to the rear end of the battery receiving plate 108, and its lower end is the rear end of the lid stacking section 91. 91d
Have been consecutive.

Thus, the battery receiving plate 108, the front side plate 115, and the rear side plate 116 form a battery storage portion 13 having a space for storing four dry batteries 117, 117, ... (See FIG. 14). The housing 13 is located inside the housing 2 by connecting the lower housing 12 to the upper housing 11.

The trapezoidal notches 112, 112 formed in the battery receiving plate 108 on the rear surface of the front side plate 115 and the front surface of the rear side plate 116.
.. are formed in a portion in the vicinity of which the left and right ends are substantially U-shaped so as to face each other and open, and terminal mounting grooves 118, 118, ... .

In addition, from the left side of the battery receiving plate 108 in the upper part of the front side plate 115,
A terminal placement hole 119 (see FIGS. 1 and 13) is formed in a portion corresponding to the second gutter-shaped portion 109b, and is located on the leftmost side of the battery receiving plate 108 in the upper end portion of the rear side plate 116. Gutter 109
Terminal placement holes 120 and 121 (see FIG. 5) are also formed in portions corresponding to a and the third trough portion 109c from the left.

Further, the terminal holding projections 122, 122 extending in the vertical direction are formed on the left end portion of the front surface of the front side plate 115, and the terminal holding projections 122, 122 are provided on the upper surface of the bottom plate 89 at positions on the front side of the terminal holding projections 122, 122. Pieces 123, 123 are formed. Further, a terminal supporting protrusion 124 extending in the vertical direction is formed on the right end portion of the front surface of the front side plate 115, and the terminal supporting protrusion 124 on the upper surface of the bottom plate 89 is formed.
A terminal support piece 125 is formed at a position close to the.

Of the five contact terminals 6, 7, 8, 9 and 10 described above, the one 6 provided at the right end of the front side plate 115 of the battery housing 13 has four dry batteries 117, 117, ... Connected in series. Which is a positive side contact terminal for connecting the positive side electrode of the power source and the hot side contact terminal 27 provided on the circuit board 4, and the contact terminal 7 provided at the left end portion of the front side plate 115 of the battery housing portion 13. Is a minus side contact terminal for connecting the minus side electrode of the power source and the earth side contact terminal 28 provided on the circuit board 4. Further, three contact terminals 8, 9 and 10 other than the positive side contact terminal 6 and the negative side contact terminal 7 are connection contact terminals for connecting four dry batteries 117, 117, ... In series. is there.

The positive side contact terminal 6 is shown in FIGS. 1, 11 to 13
As can be seen clearly from the drawing, the contact portion 6a and a connecting portion 6b which is continuous with the contact portion 6a and which is formed in a substantially L-shape are formed, and the contact portion 6a is the battery receiving plate 108 of the rear surface of the front side plate 115. Is arranged so as to be along a position corresponding to the trough-shaped portion 109a located on the rightmost side, and the vertical portion of the connecting portion 6b extends along the terminal supporting protrusion 124 formed on the front side plate 115. ,And,
The horizontal portion is provided so as to extend obliquely upward to the left from the lower end of the vertical portion.

Further, the minus side contact terminal 7 is composed of a contact portion 7a formed in a substantially bamboo-spring shape and a substantially L-shaped connecting portion 7b continuous with the contact portion 7a, and a front end ring of the contact portion 7a is a battery. Terminal mounting groove 118 formed at the left end of the front side plate 115 of the storage portion 13
And the vertical portion of the contact portion 7b is engaged with the front side plate 11
5 is located in the groove portion between the terminal holding projections 122, 122, the horizontal portion extends obliquely upward from the lower end of the vertical portion toward the front, and a part of the bottom plate 89 It is located between the terminal holding pieces 123, 123 formed in the.

Further, the connecting terminals 8, 9 and 10 are connected to the negative side contact portions 8a, 9a, 10a formed in a substantially bamboo-spring shape and the largest ring at one end of the negative side contact portions 8a, 9a, 10a. And connecting portions 8b, 9b, 10b extending substantially in the left-right direction, and the connecting portion 8
The positive side contact portions 8c, 9c, 10c are bent downward at substantially right angles from the tips of b, 9b, 10b. One of these three connection contact terminals 8, 9 and 10 has a ring at one end of its minus side contact portion 8a and two terminal mounting grooves 118 formed in the front side plate 115 of the battery accommodating portion 13. , 118 of the right side 118, and its positive side contact portion 8
The c is positioned so as to extend along the position corresponding to the second trough portion 109b from the left of the battery receiving plate 108 on the inner surface of the front plate 115 through the terminal placement hole 119 formed in the front plate 115. It is provided in the state. Further, the other two connecting contact terminals 9 and 10 have two rings at one end of the minus side contact portions 9a and 10a respectively formed in the two terminal mounting grooves 118 and 118 formed on the rear side plate 116 of the battery housing portion 13. The positive side contact portions 9c and 10c of the battery receiving plate 108 among the inner surfaces of the rear side plate 116 are separately engaged and pass through the two terminal placement holes 120 and 121 formed in the rear side plate 116, respectively. The gutter-shaped part 109a located on the leftmost side and the third gutter-shaped part 109c from the left side are provided so as to extend along the portions corresponding respectively.

Therefore, when the lower housing part 12 is joined to the upper housing part 11,
As can be seen clearly from FIG. 11, the tip end of the connecting portion 6b of the plus side contact terminal 6 is elastically contacted with the hot side contact terminal 27 provided on the circuit board 4, and it may be seen from FIG. As can be seen, the tip of the connecting portion 7b of the negative side contact terminal 7 is elastically contacted with the ground side contact terminal 28 provided on the circuit board 4.

Then, four dry batteries 11 stored in the battery storage 13
, 117 are connected in series by three contact terminals 8, 9 and 10 for connection, and a positive power source composed of four dry cells 117, 117, ... Connected in series. The side electrode is the positive side contact terminal 6 and the hot side contact terminal
Is connected to a predetermined portion of the hot side wiring pattern 25 of the circuit board 4 via 27, and the negative side electrode is connected to the circuit board 4 via the negative side contact terminal 7 and the ground side contact terminal 28.
Will be connected to the ground side wiring pattern 26.

(D-9. Lid body part) [FIG. 1, FIG. 5, FIG. 6, FIG.
13 and 14] The lid body portion 14 includes a lid plate for opening and closing the battery housing portion 13 and an engaging element for engaging the upper casing portion 11 of the lid plate.

126 is a cover plate. The lid plate 126 has substantially the same size as the lid stacking portion 91 formed on the bottom plate 89 of the lower housing portion 12, and is formed in a generally long shape in the left-right direction when viewed from the front-rear direction. The ridge line portion that forms the right end edge of the upper end surface of the right side portion 127 is integrally continuous with the left end edge of the portion 53 formed on the inclined surface of the lower end surface of the left side portion 38b of the peripheral wall 38 of the upper housing portion 11. And the continuous portion serves as the hinge portion 18.

Further, a substantially central portion of the left side portion 128 of the lid plate 126 in the front-rear direction.
128a is bent so as to form a substantially U-shape when viewed from above and below.

The height of the left and right side portions 127 and 128 is the same as that of the peripheral wall 92 of the lower housing portion 12.
It is formed at a height approximately the same as the height of.

Reference numeral 129 is an engaging element. The engaging member 129 is formed so that its upper portion has a substantially inverted U shape when viewed from the front-rear direction, and
The lower end of the right piece 129a is the central portion 128a of the left side portion 128 of the lid plate 126.
And the lower end of the left piece 129b is continuous with the upper end surface of the
A hook piece 130 that extends to almost the same height as the lower surface of the 126 and that protrudes leftward is formed at the lower end of the left piece 129b. Further, the lower portion of the left side surface of the left piece 129b is located displaced from the upper portion to the right side, and the boundary portion between the upper portion and the lower portion is an engaging surface 131 that faces downward.

Incidentally, 132 (see FIG. 14) is a right piece 129a and a left piece 12 of the engaging element 129.
The elastic piece of the left piece 129b is reinforced by the elastic force of this elastic piece 132.

Therefore, from the state shown in FIG.
8 is made to fold on the lid stacking portion 91 of the lower housing portion 12 with the center of rotation as the rotation center, and the engaging element 129 or the portion of the lid plate 126 near the engaging element 129 is directed to the lower housing portion 12 side. When pressed, the engaging surface 131 of the engaging element 129 is engaged with the lid claw engaging portion 51 formed in the upper casing 11.

As a result, the lid plate 126 is positioned so as to close the opening 90 formed in the bottom plate 89 of the lower housing portion 12,
The battery housing 13 is closed, and the cover plate 126 constitutes a part of the housing 2.

(E. Method of Using Charger) The charger 1 thus configured is used, for example, as follows.

First, the hook plate 130 of the engaging element 129 of the lid body portion 14 is pushed toward the lid plate 126 side to release the lid plate 126 while releasing the engagement of the engaging surface 131 with the lid claw engaging portion 51. Rotate to open the battery housing 13. Then, after the four dry batteries 117, 117, ... Are loaded in the battery storage portion 13, the battery storage portion 13 is closed by the lid portion 14.

Therefore, the plug pin 36 of the cord 5 is inserted into the external power input terminal of the device requiring charging.

Then, the knob 82 of the operation button 80 is pressed forward against the elastic force of the elastic piece 88. Then, since the pusher 83 of the operation button 80 pushes the sliding shaft 31b of the power switch 31,
The power switch 31 is turned on. This allows dry batteries
The electric power of 117, 117, ... Is supplied to the device and the light emitting portion 30b of the light emitting diode 30 emits light to indicate that charging is in progress.

When the knob 82 is pressed forward and released, the operation button 80 is automatically returned to the pressed position by the elastic force of the elastic piece 88.

If the charger 1 is not used, the code 5
As shown in the drawing, the cord 5 is wound around the side surface of the housing 2 and the plug 35 is fitted between the plug holding plate 94 and the plug holding piece 95 formed in the lower housing portion 12.
The entire body can be supported by the housing 2.

(F. Modified Example of Operation Unit) [FIGS. 15 and 16] FIGS. 15 and 16 are modified examples of the operation unit.

In the above-described embodiment, the example in which the operation unit having the slide switch is formed integrally with the housing has been shown, but in this modification, the operation unit 133 having a so-called push-type switch is formed integrally with the housing. is there.

That is, 134 is a large rectangular hole provided in the main portion 55 of the substrate holding portion 15, and the hole 134 is formed to be slightly larger than the size of the base portion 81 of the operation button 80.

Then, the operation button 80 can be pushed downward of the housing 2 in the assembled state as shown in FIG. 16, and the elastic piece 88 gives the operation button 80 a restoring force for such movement. can do.

(G. Effects of the Invention) As is apparent from the above description, the housing structure of the present invention is such that the housing part, the operation knob, and the operation knob that constitute all or a part of the housing are always in a predetermined direction. The elastic arm for urging the elastic body is integrally formed of synthetic resin, and a through hole is formed in the casing to connect at least one connecting piece to the casing. The operation knob, which is integrally formed through the thin hinge portion and is arranged inside the housing by bending the thin hinge portion, is inserted into the through hole to be exposed to the outside of the housing. It is characterized by doing so.

Therefore, according to the present invention, since the housing portion, the operation knob, and the elastic member for urging the operation knob can be configured by one member having a single-piece structure, an electronic device or the like can be formed. These components that are essentially provided in the above can be one component.

Thus, according to the present invention, since a plurality of types of parts made of synthetic resin are formed as one part, the number of parts, the number of molding dies, the number of molding steps, etc. can be reduced. Also, since it is possible to easily perform the work of gripping the components in the assembly process, the manufacturing cost of electronic devices and the like can be significantly reduced, and the casing part, the operation knob, and the elastic part are all formed by the same molding. Since the molding is performed by the mold, the dimensional relationship among the above respective parts can be more accurately obtained.

In the above-described embodiment, the operation knob is a knob for operating the switch, and the elastic portion for urging the operation knob is bent in a substantially U shape. However, the operation knob in the present invention does not have to be for operating an operated member such as a switch, and may be a knob for performing some operation, for example, an unlock knob.

Further, the present invention is not limited to the case structure of the charger shown in the above-mentioned embodiment, but may be various electronic devices such as radio receivers and tape recorders or other devices, and the case and operation knob and The present invention can be applied to a housing structure in various devices that need an elastic member or the like for urging the operation knob.

[Brief description of drawings]

The drawings show an example in which the housing structure of the present invention is applied to the housing structure of a portable charger, and FIGS. 1 to 5 show the charger by folding each part of a single molded body. The process of assembling is shown in order from FIG. 1 to FIG. 5, and FIG. 1 is a perspective view showing a state where the entire molded body is developed,
2 is a perspective view of an essential part showing a state where the operation part is folded on the substrate holding part, FIG. 3 is a perspective view of an essential part showing a state where the operation part is folded on the upper housing part, and FIG. FIG. 5 is a perspective view showing a state in which the circuit board is held by the board holding portion, FIG. 5 is a perspective view showing a state in which the lower housing portion is folded on the upper housing portion, and FIG.
FIG. 7 is a perspective view of the charger showing a state in which the battery housing is closed by a lid, FIG. 7 is a perspective view of the charger shown in a direction different from that in FIG. 6, and FIG. 8 is a perspective view of a circuit board. , FIG. 9 is a rear end view of the molded product in a developed state,
10 is a right side view of the lower housing portion of the molded body, FIG. 11 is a sectional view taken along line XI-XI of FIG. 6, and FIG. 12 is a sectional view taken along line XII-XII of FIG. 13 is a cross-sectional view taken along the line XIII-XIII in FIG. 5, FIG. 14 is a cross-sectional view taken along the line XIV-XIV in FIG. 16
FIG. 15 shows a modified example of the operating portion, and FIG. 15 is a perspective view showing a state before the operating portion is folded over the substrate holding portion, and FIG.
The figure is a perspective view showing a state in which the operating portion is folded on the substrate holding portion. Explanation of symbols 2 …… Case, 11, 12 …… Case part, 19, 20 …… Thin hinge part, 39 …… Through hole, 76 …… Coupling piece, 82 …… Operation knob,
88 ... Elastic arm

Claims (1)

[Claims] 1. A housing part forming all or a part of a housing, an operating knob, and an elastic arm for constantly urging the operating knob in a predetermined direction are integrally molded of synthetic resin, and the housing part is formed. A through-hole is formed in the housing, a connecting piece that plays a role of connecting the operation knob to the housing is integrally formed through at least one thin hinge, and the thin hinge is bent to form the housing. A case structure characterized in that the operation knob to be arranged inside the body is inserted into the through hole to be exposed to the outside of the case.