JPH048144Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a reel type cord pulling device.

[Background technology]

The reel-type cord pull-out device includes a take-up bobbin rotatably provided in a reel body casing having a cord inlet/outlet, and a recoil spring between the take-up bobbin and the reel body casing. The other end of the cord is electrically connected to an outlet so that other plugs can be inserted from the outside. In such a reel-type cord drawer, when the cord is pulled, the take-up bobbin rotates and the cord can be pulled out to any desired length.After the cord is pulled out, the take-up bobbin is automatically locked and the cord is in the drawn-out state. In addition, the cord is automatically wound by unlocking the winding bobbin. Therefore, a bobbin lock mechanism is provided.

[Purpose of invention]

The object of this invention is to provide a reel-type cord pulling device that is easy to assemble and allows the unlocking operation section to be set at an optimal position.

[Disclosure of invention]

In order to achieve the above object, the reel type cord drawing device according to the present invention includes a reel main body casing having a bobbin storage space formed therein and a cord entrance/exit that communicates the bobbin storage space with the outside, A winding bobbin rotatably provided in a bobbin storage space of the main body casing, a cord wound around the outer periphery of the winding bobbin through the cord inlet/outlet, and a reel body casing of the winding bobbin. A recoil spring elastically urges the take-up bobbin in the unwinding direction, and an unlocking operation piece supported by the reel body casing so that it can be operated in one direction from the outside and returned in the other direction by a locking spring. The rotation of the winding bobbin in the cord winding direction is locked by biasing in the other direction by the lock spring, and the lock on the winding bobbin is released by external operation in the one direction. In a reel type cord drawer having a bobbin lock mechanism,
The bobbin lock mechanism is comprised of an unlocking operation piece and a lock lever that are swingable about different rotational fulcrums, and the unlocking operation piece and the lock lever are engaged to swing in different directions. In addition, the lock spring is formed of a leaf spring.

This invention will be explained in detail below based on drawings showing embodiments thereof.

FIG. 1 is an exploded perspective view of an example of a reel-type cord pull-out device. The main parts include a body F, a blade holder spring G, a recoil spring H, and a cord I. The body A, front cover B, and side cover C are assembled to constitute a reel body casing. The main parts, except for the recoil spring H, are made of plastic moldings.

As shown in FIG. 2a, the body A includes a main body part that is almost trapezoidal when viewed from above, and a body-side grip part 1 that projects integrally from one side of the main body part. As shown in FIG. 1, the main part of the body is shaped like a saucer, and the saucer-shaped portion has a body bottom wall 3, a body elevation wall 4, and a body top wall on the outer periphery of the body side wall 2. Three continuous peripheral walls consisting of 5 are erected and formed. Inside the saucer-shaped portion, a body recess 6 having an opening on one side is formed and serves as a main part of the bobbin accommodating space. Near the center of this body recess 6, there is a body side wall 2.
A bobbin rotation support shaft 7 protrudes from there. In the area between the body top wall 5 and the body bottom wall 3,
A cover mounting opening 8 is formed with a large U-shaped cutout. The body-side grip portion 1 has a U-shaped cross section and a U-shaped frame portion when viewed from above, and is located on the opening side of the main body portion. As shown in Figures 2a and 2b, the body A is provided with a through hole 9 in the center of the body side wall 2, and a wall portion corresponding to the outer periphery is provided with a cord I temperature rise. A large number of ventilation holes 10 are formed to suppress the airflow. Inner circumferential ribs 11 and outer circumferential ribs 12 are concentrically protruded from the remaining wall portions of these vent holes 10 in a ring shape. A spring fall prevention rib 13 is provided. The bobbin rotation support shaft 7 is formed of a stepped cylinder, and two vertical slits 14 are formed on the outer circumference thereof in the circumferential direction. The slit 14 has a parallel base side and a V-shape at the tip side. Cord extraction prevention tubes 1 are provided along the inner peripheral surfaces of the bobbin top wall 5, bobbin vertical wall 4, and bobbin bottom wall 3.
5 and a positioning plate 16 are each integrally formed. The cord pull-out prevention tube 15 is for preventing the cord I wound on the winding bobbin D from protruding to the outside of the bobbin D and interfering with rotation. The positioning plate 16
As shown in Figure e, it is provided vertically along the inner periphery of the peripheral wall so as to protrude beyond the engaging protrusion 19 that projects on the rising peripheral wall of body A, and its upper end is shown in Figure 3 g. As shown, it is provided to ensure the positioning of the side cover C. As shown in FIG. 2a, the bobbin side wall 2 has screw insertion cylinder portions 17 integrally protruding from three locations on its outer periphery. Its cross section is formed as shown in FIG. 3c. On the outer periphery of the bobbin bottom wall 3, there is a
As shown in the figure, a protrusion 18 is formed when the reel-type cord pull-out device is placed upright. A cover positioning plate 16 projects inside the U-shaped bent portion of the body side grip portion 1. This plate 16 is similar to the plate 16 described above, as shown in FIG.
protrudes beyond the surrounding wall of As shown in FIGS. 3g and 2f, the upper end of the peripheral edge of the body A is formed into a stepped shape with an engaging protrusion 19 on the inner peripheral edge. The inner peripheral edge of the cover mounting opening 8 opened on one side of the body A is provided with a U-shaped groove 20, as shown in FIGS. 2a and 2b.

The front cover B is fitted into the cover mounting opening 8 and mounted. As shown in FIG. 1, this front cover B has an L-shaped frame as a whole, and a recessed plug storage part 25 is provided on one side of the lower part of the front cover B.
and a cord entrance/exit 26 at the far end.
As shown in FIG. 3a, the plug storage portion 25 is a concave portion that expands outward so that the cord I plug 86 can be easily pulled out and accommodated therein. As shown in FIG. 4a, the cord entrance/exit 26 is formed into a rectangular shape with each side curved into an arcuate shape. Further, the upper part of the front cover B is provided with a vertical slit 27 for ventilation, and on the inside of the wall surface having the slit 27, a horizontal connecting rib 28 is provided.
are integrally formed. As shown in FIG. 4c, a fitting protrusion 30 protrudes from the outer periphery of the front cover B, and this protrusion 30 fits into the groove 2 of the body A.
It seems to fit inside. Further, on the back surface of the front cover B, a vertical rib 29 protrudes at the center of its width, and as shown in FIG. B is stably supported by body A.

As shown in FIG. 1, the side cover C is formed as a flat cover body with a cover rotation hole 35 formed in the center and a cover-side grip portion 36 on one side. This side cover C is
As shown in FIG.
are provided concentrically, and have a large number of ventilation holes 40. The inner rib of the inner peripheral rib 38 is
As shown in FIG. 3b, the outlet cover E is allowed to freely rotate while preventing rainwater from entering from outside. As shown in FIG. 3c, the cover side wall 37 has a screw insertion cylinder part 1 of the body A.
7 is provided with a coaxially corresponding screw-threaded cylinder 41. Cover top wall 42, cover elevation wall 43,
A cord extraction prevention tube 45 and a positioning plate 46 are integrally provided on each inner periphery of the cover bottom wall 44. A positioning plate 46 also protrudes from the cover side grip portion 36. The positioning plate 46 projects upward as shown in FIGS. 5e and 5f. At the upper end of this side cover C,
As shown in FIG. 3c, the engaging protrusion 19 of the body A
A stepped engagement protrusion 47 that fits into the outer circumferential edge thereof is formed. In addition, the cover mounting opening 8, its U-shaped groove 20, etc. have the same structure as the body A side.

As shown in FIG. 3d, the inner peripheral edge of the body A is provided with a pair of protrusions 51 on the inner periphery, and a serrated locking protrusion 52 on the outer peripheral side of the upper end thereof. On the other hand, the corresponding portion of the side cover C is provided with the locking protrusion 5, as shown in FIG.
A locking groove 53 that engages with the locking groove 2 is formed. Both of these 52 and 53 are engaged with each other by elastic deformation of the side cover C side, and are temporarily fastened before the body A and side cover C are screwed together. By adopting 53, the casing can be made more compact.

As shown in FIG. 3a, the winding bobbin D is placed in a body recess (bobbin housing space) 6, and as shown in FIG. ing. This winding bobbin D
is provided with a fitting cylinder 55 at its center that fits into the outer periphery of the stepped tip of the bobbin rotation support shaft 7,
On the outer periphery, there is a winding drum section 56 around which the cord I is wound.
A pair of side receiving flanges 57, 57 are integrally formed to prevent the cord I from falling off to the side and ensure smooth rotation of the winding bobbin D.

The inner peripheral wall 58 of the winding bobbin D is formed with a cord insertion opening 59 as shown in FIG. As shown in a, a cord lock piece 60 is provided protrudingly, and one end of the connecting lead wire 63 side of the cord I taken in through the cord insertion opening 59 is sandwiched between the cord lock piece 60 and the inner circumferential wall 58. Therefore, even if tension is applied to the cord I, the tension is not applied to the terminal connection portion within the outlet body F. An outlet cover screw-in receptacle 65 having a screw hole is provided on the inner circumferential side surface and inner circumferential wall 58 of the cord lock piece 60, and the outlet cover E is attached to the mounting screw 6 through this receptacle 65.
6 and 66 to be fixed to the winding bobbin D. On the other side of the winding bobbin D, as shown in FIG. 6b, an inner annular projection 67 and an outer annular projection 68 are integrally formed. As shown in b, a spring accommodating recess 72 for accommodating the recoil spring H is formed. A spring engaging port 69 is formed at one location in the inner circumferential direction of the inner annular projection 67, and this spring engaging port 69 is connected to the inner and outer annular projections 67, 6.
Together with the spring engaging groove 70 formed between the two holes, an L-shaped groove is formed. Wedge-shaped lock cams 71 are provided on the outer periphery of the outer annular projection 68 so as to protrude at three locations in the circumferential direction.

The outlet cover E is as shown in Figure 1.
A plug insertion port 74 is provided, and a screw through hole 75 into which the mounting screw 66 is inserted is provided corresponding to the socket cover screw receiving portion 65. This cover E is attached to one side of the winding bobbin D as described above, and is rotatable within the cover rotation hole 35 of the side cover C. One side of the outlet cover E faces the outside of the reel so that another plug (not shown) can be inserted therein.

As shown in FIG. 1, the outlet body F is attached to the back surface of the outlet cover E with a mounting screw 66, and a pair of cord connection ports 77 are formed in the longitudinal direction midway.

The blade holder spring G is made up of a conductive plate each having a blade holder 80 and a connecting terminal part 81, and each blade holder spring G has the connecting terminal part 81 fitted into the cord connecting port 77 of the outlet body F. This terminal portion 81 is configured to be tightened together with the code I connection lead wire 63 by a terminal mounting screw 82 and a tightening washer 83.

As shown in FIG. 1, the recoil spring H is a plate spring, and as shown in FIG. It is located in The J-shaped spring inner end locking portion 87 is locked to the slit 14, and the spring outer end locking portion 88 is also J-shaped.
is locked in the spring locking port 69 and the spring locking groove 70 shown in FIG. 6b.

Cord I has a connecting lead 63 at one end and a plug (one side of the plug connector) 8 at the other end.
6 is provided.

The assembly of such a reel type cord drawing device is as follows. Blade holder spring G on outlet body F
The blade holder spring G is temporarily fixed by the terminal mounting screw 82 inserted from the back side and the tightening washer 83, and this outlet body F is attached to the mounting screw 66.
Attach it to the outlet cover E according to the instructions.
The cord I is connected to the cord entrance 26 from the plug storage part 25 with the connection lead wire 63 side at one end as the tip.
Pass it through. This code I is further connected to the cord insertion port 5.
9 and its tip is fixed between the inner circumferential wall 58 and the cord lock 60, and the connecting lead wire 6
3 is connected to the blade receiving spring G using the tightening washer 83 and the mounting screw 66. A recoil spring H is set on the back surface of the take-up bobbin D, and its outer end locking portion 88
Winding bobbin D spring engagement inlet 69 and spring engagement groove 7
0, and at the same time, the inner end locking portion 87 of the recoil spring H is locked in the slit 14 of the bobbin rotation support shaft 7. The winding bobbin D is housed in the body A as it is, and the bobbin rotation support shaft 7 is allowed to rotate freely. In this manner, by rotating the take-up bobbin D or the bobbin A, the recoil spring H is pre-wound. The side cover C is attached to the body A by the locking protrusion 52 on the body A side and the locking groove 53 on the side cover C side engaging each other using the elasticity of the plastic material. The screw insertion cylinder 41 is inserted through the screw insertion cylinder part 17 from the back side of the body A while remaining in the engaged state.
The side cover C is fixed to the body A by screwing a plurality of mounting screws 66 into the body A. At the same time as the front cover B is fixed, the fitting protrusion 30 on the outer periphery of the front cover B is fitted into the groove 20 of the body A, and the front cover B is attached to the body A.
It is fixed to the cover mounting opening 8 of. These body A
The assembled state of the reel body casing, which consists of the side cover C and the front cover B, is shown in FIGS. 7a to 7f.

The bobbin lock mechanism L, which is the main part of this idea, is
As shown in FIG. 1, it consists of three parts: a lock lever 90, an unlocking operation piece 91, and a locking spring 92.

As shown in FIG. 3a, the lock lever 90 is provided with a central cylindrical lever barrel 93,
It is a two-lever type with a first lever part 94 and another second lever part 95 integrally protruding from one side of its outer periphery. The first lever portion 94 is L-shaped in plan view, and has an engagement cam groove 96 formed at its tip, while the second lever portion 95 includes an engagement claw portion 97 at its tip. The first lever part 94 and the second lever part 95 are parallel to each other, as shown in FIG. They are arranged on the side of the side cover C, respectively. As shown in FIG. 3a, the engagement cam groove 96 is a notched groove having one end opened and formed in a U-shape. As shown in FIG. 2a, the body side wall 2 of the body A is provided with a protruding body-side lever rotation support shaft 98 at a position corresponding to the vicinity of the outer periphery of the winding bobbin D. Also, as shown in FIG. 5a, another cover-side lever rotation support shaft 99 is provided to protrude so as to correspond to the body-side lever rotation support shaft 98. As shown in FIG. 3e, the lever barrel 93 of the lock lever 90 is fitted into and directed by the body-side lever rotation support shaft 98, and the lever cylinder rotation support shaft 98 on the cover side is connected to the lever rotation support shaft 98 by the side cover C that is covered afterwards. 99 so that it can swing freely.

The unlocking operation piece 91 is shown in FIGS.
As shown in FIG.
101 is provided. A stopper 103 protrudes from the outer periphery of the unlocking operation piece 91 and has an L-shaped cross section.
A rib protrusion 105 is formed with a pair of spring locking ribs 104, 104. As shown in FIG. 2a, this unlocking operation piece 91 has a body side mounting tube 106 formed protruding from the upper base of the body side grip section 1, and a cover side grip section as shown in FIG. 5f. The operation piece support shaft 1 on both sides is attached to the cover side mounting tube 107 formed protruding from the upper base of the 36.
01 is fitted and supported so as to be swingable, as shown in Fig. 3h. At one end of the unlock operation piece 91 corresponding to the lock lever 90 side,
An engaging cam pin 102 is integrally formed and slidably engages with the engaging cam groove 96, as shown in FIG. 3a. This unlock operation piece 91 is
The operation section 100 on the upper part is shown in FIGS. 3a and 3f.
As shown in Fig. 3, the state in which the operating piece protrudes through the grip portions 108 formed in the grip portions 1 and 36 of the body A and the side cover C is in the locked state (solid line in Fig. 3a), while the state in which it is pushed and the operating piece is in the locked state (solid line in Fig. 3a) The state shown by the two-dot chain line in FIG. 3a is the unlock operation state. The locked state is obtained by the lock spring 92, and in this state, the engaging claw portion 97 of the lock lever 90 engages with the lock cam 71 of the winding bobbin D, and the winding force of the recoil spring H acts. Regardless of the situation, the rotation of the winding bobbin D in the cord winding direction (arrow R) is stopped, and in the unlocked state, the engaging cam pin 102 is in the engaging cam groove 9.
By sliding from the depth of the groove 6 to near the groove mouth, the engaging claw portion 97 is disengaged from the lock cam 71.
This allows the recoil spring H to rotate the winding bobbin D in the direction of arrow R for winding. In lock state,
Since the lock lever 90 is repeatedly automatically disengaged from the lock cam 71, the cord I can be freely withdrawn (arrow P).

The lock spring 92 is formed of a leaf spring. As shown in FIGS. 9a and 9b, this lock spring 92 has a spring base 111 bent into an L shape with positioning grooves 110 on both sides, and a narrow spring base 111 with a dogleg shape on the side. It has a spring deformation part 112 that is integrated so as to extend in a shape, and at the tip of the spring deformation part 112,
A bent locking portion 113 is formed. In order to support this lock spring 92, the body side grip portion 1 is provided with a first
Second and third ribs 114, 115, and 116 are provided to protrude. These ribs 114, 115, 11
6, as shown in FIG. 5a, the side cover C is also provided with the same thing so as to correspond to the body A side. The first rib 114 serves as a stopper to prevent the unlocking operation piece 91 from rotating too much beyond the state indicated by the two-dot chain line in FIG. 3a, and is provided with a first spring insertion groove 117. . A second spring insertion groove 119 is formed between the second rib 115 and a cylindrical rib 118 provided protruding from one side thereof.
It is equipped with The third rib 116 has a plate shape without a groove. From the second rib 115 to the third
A fourth rib 120 is provided toward the rib 116, and a third spring insertion groove 121 is provided between the fourth rib 120 and the third rib 116. The lock spring 92 has its base end inserted into the third spring insertion groove 121 and supported so that the spring base 111 is fixed, and the positioning groove 110 is inserted into the second spring insertion groove 119.
is engaged between the two. Spring deformation part 112
is guided through the first spring insertion groove 117, and the bent locking portion 113 at the tip engages with the lock spring 92. This bent locking portion 11
3 is the spring locking rib 104, 10 seen in FIG. 8c.
Rib protrusion 10 with both sides regulated in position between 4
5, so that the unlocking operation piece 91 is always biased in the locking direction (in the counterclockwise direction in FIG. 3a). This lock spring 92 is connected to the unlock operation piece 9.
It is set so as to extend and come into contact with the operating piece 91 at an angle with respect to the longitudinal direction orthogonal to the operating direction of the operating member 1 .

As shown in FIG. 3a, the bobbin lock mechanism L is designed so that the solid line indicates the locked state and the two-dot chain line indicates the unlocked state. The unlock operation piece 91 is pressed counterclockwise, and the stopper 103 is brought into contact with the peripheral edge 109 of the operation piece receptacle 108 to maintain its locked position. The engagement cam pin 102 of the unlocking operation piece 91 is located at the back of the engagement cam groove 96, so that the lock lever 90 is in a locked state in which the engagement claw portion 97 is engaged with the lock cam 71.
In this locked state, the winding bobbin D can be rotated in the direction of the arrow P and the code I can be pulled out, but the winding bobbin D cannot be rotated in the opposite direction, that is, in the direction of the arrow R, and the cord I cannot be wound. It's becoming like that. On the other hand, when the unlocking operation piece 91 is pushed against the locking spring 92, it rotates clockwise and the engaging cam pin 102 slides within the engaging cam groove 96, causing the locking lever 90 to rotate counterclockwise. Rotate in the direction of In this way, the unlocking operation piece 91 and the locking lever 90 are rotated in different directions, and as a result, the engaging claw portion 97 is disengaged from the locking cam 71, and the take-up bobbin D is moved from the recoil spring H. The cord I can be automatically wound by being rotated in the winding direction R by the operator. In this way, the unlock operation piece 91 and the lock lever 9 rotate in different directions.
Since the bobbin lock mechanism L is constructed by combining the lock spring 92 of the leaf spring type with the lock spring 92, each part is very simple. It can be easily assembled by simply engaging the engaging cam pin 102, and since the lock spring 92 is of a leaf spring type, assembly is even easier. In addition, if it is a single lever type, the setting position of the unlock operation piece 91 is restricted due to the overall structure, but by using a two lever type with first and second lever parts 94 and 95, the setting position is restricted. This is advantageous in that the location can be chosen more freely.

It should be noted that the bobbin lock mechanism L of the above embodiment has the first
Although shown in Figure 0A, as shown in Figure 0B, the engagement cam groove 96 may be formed into an elongated hole to prevent the engagement cam pin 102 from coming off. In this case, the engagement cam pin 102 can be a simple cantilever type. The bobbin lock mechanism L can be of a gear type, as shown in FIG. 10c, and furthermore, as shown in FIG. It may also be of a type that is simply pressed against one side of the engagement cam pin 102. Even in this type, the above-mentioned engagement occurs. In this case, lock spring 92
If it is provided for the lock lever 90, one spring is sufficient. As shown in FIG. 11, the cord entrance/exit 26 of the front cover B may be in the form of a rectangular elongated hole that is elongated in the horizontal direction. By doing this, the cord I can swing laterally at the cord entrance/exit 26, so that the cord I can be wound evenly in the width direction of the winding bobbin lock mechanism D instead of winding it in one place in the width direction while meandering. It will be done.
Although the locking spring 92 is exemplified as being inclined in the longitudinal direction of the unlocking operation piece 91 and coming into contact with it, it can also be constructed as follows. That is, as shown in FIGS. 18a and 18b, the lock spring 92 has a slightly wide mounting base 150 and a narrow deformed portion 151 in a T-shape. A positioning groove 152 is formed on one side of the mounting base 150. The lock spring 92 is a flat plate in its natural state. As shown in FIGS. 12 to 15, the body side grip portion 1 of the body A has
There are three spring mounting ribs 15 near the body side mounting tube 106, which is the rotational fulcrum of the unlocking operation piece 91.
3,154,155 are integrally protruded. One of them is the inner peripheral wall 1 of the body side grip part 1.
56, and has an inclined (or curved) spring guide surface 157 formed at its tip. The remaining two are arranged in parallel to the inner peripheral wall 156. As shown in FIG. 16, the side cover C also has similar spring mounting ribs 153, 15 opposite to the spring mounting ribs 153, 154, 155 on the body A side.
4,155 are arranged protrudingly. The lock spring 92 has three spring mounting ribs 153, 154, 155 with the positioning groove 152 side facing the body A side.
The mounting base 150 is press-fitted between them, and the positioning groove 152 is formed between the three spring mounting ribs 153, 1.
It is set by being caught on a positioning protrusion (not shown) provided between 54 and 155. At the tail end of the unlocking operation piece 91 attached to the body-side mounting tube 106, there are a pair of right and left retaining protrusions 1 on the back side, as shown in FIGS. 17a to 17e.
58 protrude at intervals. The deformed portion 1 of the lock spring 92 is located between both of these retaining protrusions 158.
51 is slidably engaged. As a result, the lock spring 92 is arranged so as to be substantially parallel to the longitudinal direction orthogonal to the operating direction of the unlocking operation piece 91, as shown in FIG. A stop rib 159 protrudes from the body side grip portion 1 and the cover side grip portion 36, with which the unlocking operation piece 91 hits when the unlocking operation is completed. The unlocking operation piece 91 is adapted to come into contact with the peripheral edge 109 of the operation piece socket 108 when the unlocking operation piece 91 is locked. In this way, if the lock spring 92 is a plate spring, and in particular is provided so as to be substantially parallel to the longitudinal direction orthogonal to the direction of operation of the unlocking operation piece 91, the spring force is directly applied to the unlocking operation piece 91. It acts effectively as a return force of 91. For example, it is possible to generate a much larger return force than when a leaf spring of the same thickness is provided in a direction inclined to the longitudinal direction. By setting them in parallel, the spring force can be generated in the most effective manner. Conversely, this means that even if a sufficiently thin leaf spring is used, a large force can be generated. In this way, since the locking spring 92 can be constructed using a sufficiently thin plate spring, the unlocking operation piece 91 can be assembled without requiring much force after bending the spring. It also has the advantage of being cost-effective and easy to manufacture. Moreover, since the lock spring 92 is approximately parallel to the longitudinal direction of the unlock operation piece 91,
Even when an unlocking operation and a locking operation are performed, both operations can be performed with the least amount of slip on the lock spring 92. This means that there is little resistance, and this has the advantage that the unlocking operation can be performed easily and with a good feel, and that the locking operation is also smooth and reliable. In the above embodiment, a cord reel exclusively used for winding a cord has been described, but the present invention can also be applied to, for example, a cord pulling device attached to an electrical device.

[Effect of idea]

As explained above, the reel type cord pulling device according to the present invention includes a reel main body casing having a bobbin storage space formed therein and a cord entrance/exit that communicates the bobbin storage space with the outside; A take-up bobbin rotatably provided in the bobbin storage space of the casing, a cord wound around the outer periphery of the take-up bobbin through the cord inlet/outlet, and a cord provided between the take-up bobbin and the reel body casing. A recoil spring elastically biases the take-up bobbin in the unwinding direction, and an unlocking operation piece supported on the reel body casing so that it can be operated in one direction from the outside and returned in the other direction by a locking spring. The rotation of the winding bobbin in the heat winding direction is locked by the biasing in the other direction by the lock spring, and the lock on the winding bobbin is released by an external operation in the one direction. In the reel-type cord drawing device having a bobbin lock mechanism, the bobbin lock mechanism is composed of an unlocking operation piece and a lock lever that are swingable about different rotational fulcrums, and the unlocking operation piece and the lock lever are mutually connected to each other. Since they are engaged to swing in different directions and the locking spring is formed of a leaf spring, the unlocking operation section can be freely set at an optimal position and ease of assembly is improved.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of a reel-type cord drawer that is an embodiment of this invention;
The figures show the body; figure a is a front view of the body seen from inside, figure b is 2b of figure a.
-2b line sectional view, figure c is a bottom view seen from the direction of arrow 2c in figure a, figure d is a side view seen from the direction of arrow 2d in figure a, figure e is 2e- 2
Figure f is an enlarged cross-sectional view along line 2f-2f of figure a; figure g is an enlarged cross-sectional view of line 2g-2g of figure a; figure h is an enlarged cross-sectional view of line 2h-2h of figure a. Each shows an enlarged cross-sectional view. Figure 3 shows the internal structure of the reel-type cord drawer in an assembled state. Figure a is a front view showing the internal structure with the side cover removed, and figure b is 3b-3b in figure a. Line sectional view, figure c is 3c in figure a
-3c line sectional view, figure d is a perspective view of 3d section in figure a, figure e is a 3e-3e line sectional view in figure a, figure f is 3f-3f line sectional view, Figure g represents an enlarged sectional view taken along line 3g-3g of figure a.
FIG. 4 shows the front cover; FIG. 4A shows its front view, FIG. 4B shows its back view, and FIG. Fifth
The figures show the side cover; figure a is a front view thereof, figure b is a sectional view taken along line 5b-5b of figure a,
The same figure c is a bottom view of the same figure a seen from the arrow 5c, the same figure d is the same figure 5d line arrow view of the same figure a, the same figure e is the same figure 5
Cross-sectional view of e-5e, figure f is 5f-5f of figure a
Figure 5g is a perspective view of section 5g in figure a, and figure h is a sectional view taken along line 5h-5h of figure a. Figure 6 shows the winding bobbin, where a is a front view from one side, b is a front view from the other side, and c is 6c-6 of a.
A sectional view taken along the line c, and d of the same figure represents a sectional view taken along the line 6d-6d of the same figure b. Figure 7 shows the state of the reel-type cord drawer after assembly;
is a front view of the same, b is a plan view of a seen from the direction of arrow 7b, c is a bottom view of a seen from the direction of 7c, and d is a line 7d-7d of a of the same figure. sectional view, figure e is a side view of figure a seen from direction 7e, figure f is a sectional view taken along line 7f-7f of figure a, figure 8
The figure shows the unlock operation piece.
is a front view of the same, b is a plan view taken from the direction of arrow 8b of FIG. Side view seen from the direction, the same figure e is 8e-8 of the same figure b
It shows an e-line cross-sectional view. FIG. 9 shows a lock spring, and FIG. 9A shows a front view thereof, and FIG. 9B shows a side view taken from arrow 9b in FIG. 10 is a perspective view of each embodiment of the bobbin lock mechanism, FIG. 10a is an enlarged view of the main part of FIG. 1, and FIG. Fig. 3c shows an example in which the engagement lock groove and the engagement cam pin are of a gear type, and Fig. d shows an example in which the engagement lock groove and the engagement cam pin are of a type in which they simply abut each other. Figure 11 is a front view of the front cover showing an example in which the cord entrance is in the form of a horizontal long hole;
Figure 2 is an exploded perspective view of a reel-type cord pull-out device showing another example in which the lock spring is arranged parallel to the longitudinal direction of the unlocking operation piece, and Figure 13 shows the lock spring installed in the body side. 14 is an enlarged cross-sectional view taken along the line 14a-14a in FIG. 13;
Figure 5 is a sectional view taken along line 15a-15a in Figure 13, Figure 16 is a side view showing the side cover with mounting ribs, and Figure 17 is a view of the unlocking operation piece in Figure 12 from each side. Figure a is a front view of the operating piece, Figure b is 17b in Figure A.
View from the arrow 17c in the same figure a, d in the same figure
is a view taken from arrow 17d in figure a, and figure e is a view taken from arrow 17 in figure b.
Fig. 18a is a front view showing the lock spring of Fig. 12, and Fig. 18b is a view taken along arrow 18b in Fig. 12a. A, B, C... Reel body casing, D...
Take-up bobbin, H... recoil spring, I... cord, L... bobbin lock mechanism, 26... cord entrance/exit, 86... plug, 90... lock lever,
91...Unlock operation piece, 92...Lock spring.

Claims (1)

[Claims for Utility Model Registration] (1) A reel body casing having a bobbin housing space formed therein and having a cord inlet/outlet communicating the bobbin housing space with the outside, and the inside of the bobbin housing space of the reel body casing. a winding bobbin that is rotatably provided in the winding bobbin, a cord that is wound around the outer periphery of the winding bobbin through the cord entrance/exit, and a cord that is provided between the winding bobbin and the reel body casing and that moves the winding bobbin in the unwinding direction. The reel is equipped with a recoil spring that elastically biases the reel, and an unlocking operation piece supported by the reel body casing so that it is operated in one direction from the outside and returned in the other direction by the locking spring. A reel type having a bobbin lock mechanism that locks the rotation of the winding bobbin in the cord winding direction by biasing in the other direction and releases the lock on the winding bobbin by external operation in one direction. In the cord pulling device, the bobbin locking mechanism is composed of an unlocking operation piece and a locking lever, each of which is swingable about different rotational fulcrums,
The reel type cord pulling device is characterized in that the unlocking operation piece and the locking lever are engaged so as to swing in mutually different directions, and the locking spring is formed of a plate spring. (2) The lock lever has a first lever part that engages with the unlock operation piece and a second lever part that engages with and disengages from the winding bobbin.
A reel type cord drawer according to claim 1, which is provided with two lever parts. (3) The reel-type cord pull-out device according to claim 1 or 2, wherein the unlocking operation piece and the locking lever are adapted to interlock with each other by fitting into each other. (4) An engaging cam pin is provided on either the unlocking operation piece or the locking lever, and an engaging cam groove that engages with the engaging cam pin is formed on the other side. Claim 3 of Utility Model Registration The reel-type cord pulling device described in Section 1. (5) The reel type cord pulling device according to claim 4, wherein the engaging cam groove is a notched groove with one end open. (6) The reel type cord pulling device according to claim 4, wherein the engaging cam groove is formed by an elongated hole. (7) The reel type cord pulling device according to claim 3, wherein the unlocking operation piece and the locking lever are provided with gears that mesh with each other. (8) The unlocking operation piece and the locking lever are engaged with each other on one side thereof, and the locking spring is in contact with the locking lever. Reel type cord pulling device. (9) Any of the claims 1 to 7 of the Utility Model Registration Claims, in which the lock spring is in contact with the unlocking operation piece so as to be inclined in the longitudinal direction perpendicular to the operating direction of the unlocking operation piece. The reel-type cord pulling device described in . (10) The reel-type cord pulling device according to claims 1 to 7, wherein the lock spring is arranged so as to be substantially parallel to the longitudinal direction perpendicular to the operating direction of the unlocking operation piece. (11) The unlock operation piece has one longitudinal end as a tail and the other longitudinal end as a tip,
The tip of the lock spring is adapted to engage with the lock lever, the rotational fulcrum of the unlocking operation piece is set between the tip and the tail, and the mounting base of the lock spring is located near the rotational fulcrum of the reel body casing. Claim 10 of the Utility Model Registration, in which the tip of the locking spring is positioned so that it engages with the tail of the unlocking operation piece.
The reel-type cord pulling device described in Section 1. (12) The reel-type cord pulling device according to claim 9 or 11, wherein the mounting base of the lock spring is supported by a spring mounting rib protruding from the reel body casing. (13) The reel-type cord pulling device according to claim 12, wherein an inclined or curved spring guide surface is formed on the protruding end of the spring mounting rib. (14) Any one of claims 9 to 13 of the claims registered as a utility model, in which the tip of the unlocking operation side of the lock spring is located between the left and right retaining protrusions provided on the tail of the unlocking operation piece. The reel-type cord pulling device described in . (15) The cord entrance/exit of the reel body casing is
The reel type cord drawing device according to any one of claims 1 to 14, which has a rectangular shape when viewed from the front. (16) The reel-type cord drawer according to claim 15, wherein the cord entrance/exit is in the form of a long hole in the horizontal direction when viewed from the front, and the cord can meander in the horizontal direction. Device.