JPH0343731B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a timer switch, and relates to a structure in which a timer unit and a terminal unit are incorporated in a case.

(Prior art) Conventionally, this type of timer switch was
As described in Publication No. 47-39590, a structure is adopted in which each part of the timer mechanism is sequentially attached to a board that is housed and fixed in a switch case, and this board is housed in the case and fixed with screws. ing.

(Problems to be Solved by the Invention) In a structure in which a board with this type of timer mechanism attached is housed in a case and fixed with screws, it takes time and effort to assemble it, and Space is required, the case is large,
Furthermore, since the timer mechanism and the switch mechanism are integrally assembled on the board, there is a problem in that it is difficult to improve assembly accuracy.

The present invention was made in view of the above-mentioned problems, and it facilitates the installation of the timer unit and prevents the timer unit from wobbling in its proper position in the storage recess.
Although it is securely stored and held, and has a timer unit, it can be placed in the same way as general wiring equipment, improving assembly efficiency, making it easier to downsize, and improving the accuracy of timer unit assembly. The present invention provides a timer switch that improves connection workability.

[Structure of the invention]

(Means for Solving the Problems) The timer switch of the present invention has a two-split case member that has an opening in at least one case member and storage recesses that communicate with the opening and form storage recesses in the center and on both ends. and a timer unit that is housed in a housing recess at the center of the one case member, and a terminal unit that is housed in housing recesses at both ends of the one case member. The storage recess is formed deeper than the storage recesses on both ends, and the side wall of one case member has a step at the boundary with each of the storage recesses on both sides, and is sandwiched between the pair of steps. A concave groove is formed that continues from the opening edge of one case member to the central storage recess, and the terminal unit is stored in the storage recesses on both ends by falling through the opening of one case member, and the timer unit is inserted into the timer unit. is housed by falling into the opening of the one case member along the recessed groove.

(Function) When the timer switch and timer unit of the present invention are housed in the housing recess formed in one of the case members, the timer switch and timer unit are housed, positioned and held by guiding the groove and dropping the timer unit. Further, the terminal unit is accommodated by being pushed into the accommodation recesses on both end sides. The depth of the storage recess that stores the timer unit in the center is deeper than the storage recesses that store the terminal units on both ends, and the boundary is formed by a step, so that the terminal unit and timer unit can be arranged easily. It can be stored without a partition in the direction of
The timer unit can be held within the case without requiring a special partition member or a special positioning mechanism.

(Embodiment) Next, the configuration of an embodiment of the present invention will be described with reference to the drawings.

In Figures 1 and 2, 1 is a case;
It is constructed by joining two halves of case members 2 and 3. This one case member 2 has a timer unit storage recess 4 formed in the center thereof, and this storage recess 4
Terminal unit storage recesses 5 and 6 are formed at both ends of the terminal unit. The central storage recess 4 and the storage recesses 5 and 6 on both sides communicate with each other from the case opening edge on the upper surface, so that the timer unit 7 and the terminal units 8 and 9 can be dropped into the case opening edge and stored therein.
The timer unit storage recess 4 in the center is formed deeper than the terminal unit storage recesses 5 and 6 at both ends, and is sized to have enough clearance to accommodate the timer unit 7 by dropping it into the storage recess. The timer unit 7 housed in the timer unit 4 is allowed to move to a certain degree within the clearance that allows it to be dropped in, and its movement in a direction intersecting the direction in which it is dropped is restricted so that it can be held in position. That is, as shown in Figure 3,
On both side walls of the central storage recess 4, steps 10 and 10 are formed at the boundaries between the end storage recesses 5 and 6, and the case opening is sandwiched between the pair of steps 10 and 10 of one case member 2. Concave groove portions 11, 11 are formed that extend from the edge to the central storage recess 4, and the central storage recess 4 is wider on both sides than the storage recesses 5, 6 on both end sides.

Next, as shown in FIGS. 1 and 2, the other case member 3 is coupled to the upper surface of the one case member 2 with a mounting bracket 12. As shown in FIGS. A handle fitting part 13 is formed in the center of the other case member 3 and is open on the upper surface, and terminal units 8 and 9 are fitted into the lower surface of the other case member 2 from the upper opening edge of the other case member 2. protrusions 14 that press and hold the
is formed. Further, as shown in FIG. 4, shaft support grooves 15 are formed on both sides of the fitting portion 13 of the other case member 3, and are open at the lower edge.

Next, as shown in FIGS. 1 and 3, the one terminal unit 8 includes a terminal plate 16 formed in a substantially square shape in plan, and side plate portions 1 of the terminal plate 16.
7, 17, and a pair of locking pieces 18 fitted along the inside of the locking pieces 18.
9 are opposed to the wire connecting portions 20, 20 of the terminal board 16, respectively.

Further, as shown in FIGS. 1 and 3, the other terminal unit 9 includes a pair of terminal plates 21 and 22 formed in a substantially U-shape in plan, and each terminal plate 2.
It is composed of lock pieces 24 fitted along each of the side plate parts 23 of 1 and 22, and each of the lock pieces 2
The locking portions 25 of No. 4 are opposed to the wire connecting portions 26 of the terminal boards 21 and 22, respectively.

As shown in FIG. 3, these terminal plates 16, 21, 22 are designed to be respectively dropped and stored in storage recesses 5, 6 on both end sides of one case member 2, and the other terminals The plates 21 and 22 are fitted and housed facing each other. The upper edge of each terminal plate 16, 21, 22 is pressed and held by the protrusion 14 of the other case member 3.

Further, as shown in FIGS. 1, 2, 3, and 4, a terminal plate 16 is located above the central storage recess 4 and extends horizontally from the upper edge of one terminal plate 16. A reversing mechanism support frame 27 is integrally formed.
Concave pivot parts 28 bent into a substantially V-shape are formed on both sides of the support frame 27, and support pieces 28 are formed on both sides of the mover 29 into which the support frame 27 is fitted. 30 is swingably supported. At the lower end of this movable element 29, there is provided the other first terminal plate 2.
A movable contact piece 32 is formed on the upper edge of the storage recess 4 and is moved toward and away from a fixed contact piece 31 extending above the central storage recess 4 . A support shaft 34 is attached to the other end of the coil spring 33, which has one end locked to the upper part of the movable element 29, and is connected to a support shaft 34 below the pivot portion 28 of the support frame 27.
is locked.

Further, both ends of the support shaft 34 are engaged with support recesses 36 formed on both sides of the handle body 35, as shown in FIGS. 1, 2, and 3.
The shaft portion 37 protruding on both sides of the shaft support groove 1 is formed on both sides of the fitting portion 13 of the other case member 3.
5, it is pivotally supported so that it can swing freely.

Furthermore, as shown in FIG. 1, a fixed contact piece 38 extends from the bottom of the other second terminal plate 22 and is disposed on the bottom of one side of the central storage recess 4. A movable contact piece 39 formed of an elastic piece that is brought into contact with and separated from the upper part of the fixed contact piece 38 is welded to one side of the one terminal plate 16. The piece 39 constitutes a timer switch mechanism 40.

Next, as shown in FIG. 5, the timer unit 7 is constructed by incorporating a timer section (speed regulating section) into a timer case 41. This timer case 41 is formed into a box shape with both sides open, and a support plate part 42 that partitions left and right is integrally formed in the center of this timer case 41, and a cover plate 42 is formed on both sides.
It is designed to be sealed at 3,44. Further, a recessed step 45 is formed at the lower part of one side of the timer case 41, in which the timer switch mechanism 40 is disposed. The timer case 41 is dropped and stored in the storage recess 4 at the center of the one case member 2 from the opening edge of the upper surface using the recessed groove 11 formed by the pair of steps 10, 10 as a guide. Movement is restricted on intersecting planes.

Further, the support frame 2 is provided on the upper surface of the timer case 41.
A protruding piece 46 cut and raised from 7 comes into pressure contact with the timer case 41 to prevent the timer case 41 from moving in the downward direction.

Next, the timer portion of the timer unit 7 has a ratchet ratchet wheel 49 rotatably provided at the first stem 48, and a first gear 50 which is rotated by coupling only one direction of rotation of the ratchet ratchet wheel 49. A main shaft 51 of the ratchet ratchet wheel 49 projects outwardly from the cover plate 43, and the first gear 50 is biased by a leaf spring 52 in the direction of engagement with the ratchet ratchet wheel 49.

Next, the second gear is engaged sequentially from the first gear 50.
The pinion 53, the second gear 54, the third pinion 55, the third gear 56, the fourth pinion 57, the fourth gear 58, the fifth pinion 59, and the escape gear 60 are alternately rotatably mounted on two parallel shafts. A crown 62 is attached to the pallet shaft 61 that engages with the escape gear 60.

Further, as shown in FIG. 1, the timer unit 7 has a set-reset mechanism 63, which is located on the outer surface of one cover plate 43 of the timer case 41, so that a first cam 64 of the set-reset mechanism is connected to the main shaft. It is attached to 51. This first cam 64
It has an engaging edge 66 and a cam edge 67 that are engaged with the actuating portion 65 protruding from one side of the handle body 35, and an engaging recessed edge 69 that engages with the second cam 68 of the set-reset mechanism 63. In addition, a spring locking protrusion 70 is protruded. Further, a second cam 68 rotatably supported on the main shaft 51 is connected to the first cam 6.
An interlocking protrusion 72 that is engaged with the engagement concave edge 69 of No. 4 is formed. Further, an operating cam edge 71 is formed on the second cam 68, and the base end of the opening/closing lever 74 that is engaged with this operating cam edge 71 is connected to the timer case 41.
The opening/closing lever 74 has an engagement member that pushes the movable contact piece 39 of the timer switch mechanism 40 away from the fixed contact piece 38. A portion 76 is formed.

Further, the timer unit 7 has a coil-shaped timer spring 77, and both ends of the spring 77 are locked to the opening/closing lever 74 and the spring locking protrusion 70 of the first cam 64.

In this way, the timer unit 7 is composed of a timer section (speed regulating section), a set-reset mechanism 63, an opening/closing lever 74 that controls opening and closing of the timer switch mechanism 40, and a spring 77, and is actuated by the operating section 65. The timer switch mechanism 40 is controlled to open and close.

Next, the operation of this embodiment will be explained.

When assembling, the locking pieces 18, 24, 24 are dropped into the storage recesses 5, 6 at both ends of one case member 2, and then the lock pieces 18, 24, 24 are stored.
When the timer case 41 of the timer unit 7 is dropped into the central storage recess 4 and the terminal plates 16, 21, and 22 are dropped into the storage recesses 5 and 6 at both ends through the openings, the timer case 41 is inserted into the recess groove 11. ,11
are stored as guides, and the terminal boards 16, 21, 22
are the lock pieces 18 stored in the storage recesses 5 and 6;
24, 24 are fitted. Then, the timer case 41 is dropped into the storage recess 4 and moved to the normal position at the stepped portions 10 in a plane intersecting the direction in which the timer case 41 is dropped into the storage recess 4 within a clearance that can be stored. It is held in position without being restricted and wobbling. Furthermore, the terminal units 8 and 9, each consisting of the terminal plates 16, 21, 22 and the locking pieces 18, 24, 24, are located in the central storage recess 4.
is formed deeper than the storage recesses 11, 11 on both end sides,
Since the boundary is formed by a step, the terminal units 8, 9 and the timer unit 7 can be reliably accommodated even if there is no partition in the direction in which they are disposed. and,
In this state, one side cover plate 4 of this timer case 41
A set-reset mechanism 63 is disposed between the storage recess 3 and the inner surface of the side wall of the storage recess 4.

Then, the movable element 29, the spring 32, and the support shaft 3
4 or the like, a fixed contact piece 31 and a movable contact piece 32 constitute a switch mechanism, and the other case member 3 provided with the handle body 25 is attached to the opening of one case member 2. In this state, the protruding piece 4 cut and formed from the support frame 27 extending from the terminal plate 16 of one terminal unit 8 stored in the storage recess 5 on both end sides of one case member 2
6 is pressed, and the protrusion 14 of the other case member 3 coupled to the upper surface of one case member 2 presses the upper edge of each terminal plate 16, 21, 22 of both terminal units 8, 9. Timer unit 7 is connected to terminal board 1
6 and is held by the pressing force of the other case member 3.

When the handle body 35 is swung clockwise as shown by the chain line from the state shown by the solid line in FIG.
The spring 33 for the movable arm 9 exceeds the dead center position and the movable member 29 is held inverted about the support piece 30, and the movable contact piece 32 is brought into contact with the fixed contact piece 31 and closed.

Further, as the handle body 35 rotates, its operating portion 65 pushes the engagement edge 66 of the first cam 64 of the set-reset mechanism 63, and the first cam 64 is moved by the spring 77.
(counterclockwise in FIG. 1), the spring 77 is charged, and the opening/closing lever 74 is pushed against the cam edge 67 of the first cam 64, thereby releasing the movable contact of the timer switch mechanism 40. The piece 39 is pushed against its elasticity, contacts the stationary contact piece 38, and closes. Also,
In this state, the second cam 68 also engages with the first cam 64, and this cam edge 71 is also held in the state in which the opening/closing lever 74 is pushed. Further, the first cam 64
When the ratchet ratchet wheel 49 is rotated, the ratchet ratchet wheel 49 is also rotated.
The number gear 50 is not rotated.

When the handle body 35 is pushed in this state, the handle body 35 changes from the chain line state to the solid line state in FIG. Disengaged and liberated.

Further, as the handle body 35 rotates, its operating portion 65 separates from the engaging edge 66 of the first cam 64, and the first cam 64 is rotated clockwise in FIG. The ratchet ratchet wheel 49 connected to the No. 1 cam 64 via the main shaft 51 rotates the No. 1 gear 50, and the second pinion 53, the second gear 54, and the third
The pinion 55, the third gear 56, the fourth pinion 57, the fourth gear 58, and the fifth pinion 59 are sequentially loosened and rotated by the escape gear 60, the pallet shaft 61, and the crown 62, and the first cam 64 is rotated to a predetermined position. When the timer rotates, the second cam 68 engaged with the first cam 64 is rotated, the cam edge 71 of the second cam 68 comes off the opening/closing lever 74, and the opening/closing lever 74 is moved by the spring 77. The opening/closing lever 74 applies a force for separating the movable contact piece 39 from the fixed contact piece 38, and the timer switch mechanism 40 operates for a predetermined period of time after the handle body 35 is operated. It will be released when the time has passed.

Note that the central storage recess 4 of one case member 2
Since the chisel is formed deeply, the bottoms of the storage recesses 5 and 6 on both end sides become low, forming recesses 1a as shown in FIG. 1, resulting in material savings.

〔Effect of the invention〕

According to the present invention, the timer unit is guided and stored in the recessed groove formed by the stepped portion by falling into the storage recess in the center of one of the case members of the two-split case, and the timer unit is placed in its normal position by the storage recess. It is held in position without wobbling. Further, the terminal unit can be dropped into the storage recesses on both ends, and the timer unit and the terminal unit can be easily disposed. Furthermore, the timer unit is housed in the center of one case member, and the terminal unit is housed at both ends of the other case member. The terminal unit can be arranged in the same way as a general wiring device, and assembly is easy. In addition, the depth of the storage recess at the center of one case member is deeper than the storage recesses at both ends, and the boundary is formed by a step, so there is no partition in the direction in which the terminal unit and timer unit are arranged. No special partitions are required, and terminal connections can be made on the opening side of one case member, improving workability.Furthermore, the timer unit can be assembled independently, improving the assembly accuracy of the timer unit. can. Furthermore, since only the central storage recess of one case member is formed deeply, the lower surfaces of the storage recesses at both ends can be made thinner, thereby saving on materials.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view of a timer switch showing an embodiment of the present invention, Fig. 2 is a partially cutaway front view showing the shaft support of the above handle body, and Fig. 3 is a plan view of one of the above case members. FIG. 4 is a longitudinal sectional side view showing the shaft support of the handle body, and FIG. 5 is a longitudinal sectional side view of the timer unit. 2... One case member, 3... Other case member, 4, 5, 6... Storage recess, 7... Timer unit, 8, 9... Terminal unit, 10... Step part, 11... Recess Groove.

Claims (1)

[Scope of Claims] 1. At least one case member has an opening, a two-split case member that communicates with the opening and has storage recesses formed in the center and both ends, and the center of the one case member. A timer unit is housed in the housing recess, and a terminal unit is housed in the housing recesses on both ends of the one case member, and the housing recess in the center of the one case member is arranged so that the housing recesses are closer to each other than the housing recesses on both ends. The depth is deep, and the border between the storage recesses on both sides is formed as a step on the side wall of one case member, and the space between the opening edge of one case member and the central portion is sandwiched between the pair of steps. A concave groove continuous to the housing recess is formed, the terminal unit is stored in the housing recess on both ends by falling through the opening of one of the case members, and the timer unit is inserted through the opening of the one case member. A timer switch characterized in that the timer switch is housed by falling along the recessed groove.