JPH07315697A - Cord reel - Google Patents

Abstract

PURPOSE:To provide a cord reel capable of preventing the cord taken up from flapping and vibration to automatically, stably and satisfactorily take up the cord. CONSTITUTION:A gear 5 is mounted on a take-up drum 3 for winding and holding a cord 4 and a lock releasing button 9 for releasing the locked condition of the take-up drum 3 by a ratchet mechanism is provided. Further, a damper gear 94 interlocked with the lock releasing action by the lock releasing button 9 to mesh with the gear 5 is provided to reduce the take-up speed of the take-up drum 3 through the rotational resistance of the damper gear 94.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord reel for holding a power cord and various connecting cords of a radio cassette tape recorder, an electric vacuum cleaner, a hair dryer, etc.

[0002]

2. Description of the Related Art Conventionally, as a cord reel for holding the power cord of electric equipment in a retractable manner,
A rotatably supported winding drum is urged in one rotation direction by urging means such as a spring, and lock means is provided to lock the winding drum against the urging force of the urging means. A power cord or the like is wound and held on the winding drum, the cord is pulled out by a desired length against the urging force of the urging means, and the cord is locked by the locking means to use the cord. It is known that the cord is automatically wound around the drum by releasing the locked state of the winding drum by the locking means and rotating the winding drum by the urging force of the urging means when not in use. (Japanese Patent Laid-Open No. 63-274075
No.

[0003]

However, in the conventional cord reel, when the cord that has been pulled out and used is wound and stored on the winding drum, the locked state of the winding drum is released by the locking means and the above-mentioned urging force is applied. The winding drum is rotated by the urging force of the means, and the cord is automatically wound around the drum. In this case, the winding drum rotates vigorously and the cord is wound up vigorously. Flickers violently, and the housing of the cord reel vibrates to give an unpleasant vibration sound.

The present invention has been made in view of the above circumstances, and provides a cord reel capable of automatically and stably winding a cord by preventing flapping and vibration of the cord when winding the cord. The purpose is to do.

[0005]

In order to achieve the above object, the present invention provides a winding drum which is rotatably supported and has a cord wound around the outer circumference thereof, and a winding drum which is attached in one rotation direction. Biasing means, a ratchet mechanism for locking the rotation of the winding drum against the biasing force of the biasing means, and a lock releasing means for releasing the locked state of the winding drum by the ratchet mechanism. And a deceleration means for decelerating the rotation of the winding drum by the urging force of the urging means.

Here, as the deceleration means, a damper gear having a predetermined rotation resistance is meshed with a gear provided on a winding drum, and when the winding drum is rotated by the urging force of the urging means, the damper gear is rotated. The rotation of the winding drum can be slowed down by the rotation resistance, and further, as a lock releasing means, a ratchet pawl forming the ratchet mechanism is pressed to release the locked state of the winding drum by the ratchet mechanism. It is also possible to provide a button and interlock the damper gear with the unlocking operation by this unlocking button so that the damper gear meshes with the gear of the winding drum only when unlocking.

In this case, as a specific embodiment of the present invention, a ring-shaped gear having a plurality of ratchet recesses formed on the inner peripheral surface and engaging teeth provided on the entire outer peripheral surface is wound on a winding drum. The ratchet mechanism is configured by fixing the ratchet claw that is engaged with the ratchet recess inside the ring-shaped gear, and the lock release button is wound on the one end surface side of the winding drum. The lock release button is arranged so as to be movable back and forth along the radial direction of the drum, and one end of the lock release button is brought into contact with the ratchet pawl, and one end of the lock release button presses the ratchet pawl and the ratchet pawl and the ratchet concave portion. A lock releasing means for releasing the locked state of the winding drum by the ratchet mechanism by releasing the engagement state with the lock releasing button is further provided. A cord reel in which a speed reducing means is configured so that the damper gear meshes with the engaging teeth of the ring gear when unlocked by the lock release button, and a plurality of ratchet recesses are formed on the inner peripheral surface. A ring-shaped gear having engaging teeth on the entire outer peripheral surface is fixed to one end surface of the winding drum, and a lock release button is provided on one end surface side of the winding drum in the radial direction of the winding drum. The lock release button is integrally provided with the ratchet pawl so as to be located inside the ring gear, and the damper gear is attached so as to be located outside the ring gear. Moreover, when the lock release button is urged outward and the lock release button is pressed against the urging force, the ratchet claw is pressed integrally with the lock release button. The ratchet claw and the ratchet recess are disengaged from each other, the lock state of the winding drum is released, and the damper gear is configured to mesh with the engaging teeth of the ring gear. provide.

[0008]

In the cord reel of the present invention, the cord is always wound and held on the winding drum, and when the cord is used, the cord is pulled to rotate the winding drum against the urging force of the urging means. Pull out the cord, and when the cord is pulled out to the desired length, when the work to pull out the cord is completed, the winding drum rotates due to the urging force of the urging means (the winding drum rotates in the winding direction).
The ratchet mechanism is locked and the cord is held in a pulled-out state by a desired length. In this case, when the cord is pulled out, the locking action by the ratchet mechanism does not work and the cord is pulled out against the urging force of the urging means to easily rotate the winding drum in the cord feeding direction and pull out the cord. The pulling operation is completed, the tension for pulling the cord is released, and the ratchet mechanism locks when the winding drum tries to rotate in the winding direction by the urging force of the urging means. The winding drum is locked in the winding direction.

Next, when the drawn cord is wound around the winding drum and stored, the lock releasing means is operated to release the locked state of the winding drum by the ratchet mechanism. As a result, the winding drum is rotated in the winding direction by the urging force of the urging means, and the cord is automatically wound around the winding drum and stored. in this case,
In the cord reel of the present invention, since the speed reducing means for reducing the rotation of the winding drum by the biasing means is provided, the winding drum is slowly rotated by the action of the speed reducing means, and the cord is wound slowly. It is wound up on a take-up drum.

Therefore, the cord can be wound well without causing the cord end to flutter when the cord is wound or the housing vibrating to generate an unpleasant vibration noise.

Here, as the deceleration means, as described above, when a damper gear having a predetermined rotation resistance is meshed with a gear provided on the winding drum, the winding drum is rotated by the urging force of the urging means. The rotation resistance of the damper gear can be used to reduce the rotation of the winding drum, and in this case, as in the above-described two embodiments, the ratchet pawl forming the ratchet mechanism is pressed as the unlocking means. A lock release button for releasing the locked state of the winding drum by the ratchet mechanism is provided, and the damper gear is interlocked with the lock release operation by the lock release button so that the damper gear and the gear of the winding drum are engaged only when the lock is released. It is preferable to use a damper gear to reduce the speed when pulling out the cord. Does not work, the cord can be pulled out smoothly and quickly, and the cord winding speed is surely reduced when winding the cord, which tends to cause fluttering of the cord end or vibration noise, to prevent these inconveniences. be able to.

That is, in the above-mentioned first embodiment, when the cord is pulled out to a desired length and used,
The ratchet claw engages with the ratchet recess provided on the inner peripheral surface of the ring gear fixed to the winding drum, and the winding drum is locked.In this state, the lock release button is pressed to wind the cord. When pressed, one end of the lock release button presses the ratchet pawl to release the engagement between the ratchet pawl and the ratchet recess, releasing the locked state of the take-up drum to apply the biasing means. The take-up drum rotates due to the force, and at the same time when the cord is taken up, the damper gear attached to the lock release button meshes with the engaging teeth provided on the outer circumference of the ring gear to reduce the rotation of the take-up drum. Is. On the other hand, when the cord that is not pressing the lock release button is pulled out, the damper gear attached to the lock release button is not engaged with the ring gear, and when the cord is pulled out, the damper gear increases the cord pulling torque. There is no such thing.

Further, in the above-mentioned second embodiment, the ratchet pawl in the above-mentioned first embodiment is integrally provided with the lock release button, and by pressing the lock release button, the ratchet pawl is integrated with this lock release button. The ratchet pawl is pressed so that the take-up drum is released from the locked state. Other functions are the same as those in the first embodiment. According to the second embodiment, since the ratchet pawl and the lock release button are configured as one part, the number of parts can be reduced and the assembly process can be simplified, which contributes to cost reduction. it can.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show a cord reel according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a substantially cylindrical housing having a bottom, and a shaft column 1 to which a winding drum 3 to be described later is attached is provided at the center of the inner surface of the bottom wall of the housing 1.
1 is projectingly provided, and one end of a spring spring (biasing means) 2 is fixed to the base end of the shaft post 11.

As shown in FIG. 2, a part of the peripheral surface of the housing 1 is a flat flat wall portion 12, and the upper end of the flat wall portion 12 is above the housing. The button mounting recess 13 is formed by projecting upward from the end face and cutting the upper end in three steps. Further, mounting ears 14, 14 are formed on both sides of the flat wall body 12 on the peripheral wall of the housing 1, and one mounting ear 14 and the flat wall body 1 are formed.
A cord insertion hole 15 is formed between the cord insertion hole 15 and the cord 2. The mounting ears 14, 14 are for fixing the housing 1 to a main body of an electric device such as a radio cassette tape recorder.

Reference numeral 3 in the drawing is a winding drum in which ring-shaped flange portions 32, 32 are integrally provided on both end edges of a substantially cylindrical drum body 31, respectively. The power cord 4 to which the plug 41 is attached is wound. As shown in FIG. 6, the hollow portion of the drum body 31 has partition walls 36 and 37.
It is partitioned into three spaces of an upper part 33, an intermediate part 34 and a lower part 35 by means of, and a shaft hole 38 is provided in the partition walls 36 and 37 along the central axis of the drum body 31. On the partition wall 36 for partitioning the upper part 33 and the intermediate part 34 of the drum body 31, two large and small ring-shaped contact plates 42, 4 made of a metal made of a good conductive material such as a copper plate.
3 are concentrically fixed to each other, and these contact plates 4
The connecting pieces 42a, 43a provided integrally with the terminals 2, 43 penetrate the partition wall 36 and project into the intermediate portion 34, and the connecting pieces 42a, 43a are electrically connected to the base end portion of the power cord. It is connected to the.

A ring-shaped gear 5 for forming a ratchet mechanism is fixed to the upper end surface of the winding drum 3 along the inner peripheral edge of the upper end of the flange portion 32. On the inner circumference of the ring-shaped gear 5, wedge-shaped ratchet recesses 51, 51, 51, 5 are spaced apart from each other at equal intervals.
1 is provided, and engaging teeth 52 are formed on the outer circumference of the ring gear 5 over the entire circumference.

The winding drum 3 is rotatably accommodated in the housing 1. That is, the housing 1
The winding drum 3 is housed therein, and the shaft column 11 provided in the housing 1 is inserted into the shaft hole 38 of the winding drum 3 so as to be rotatably supported, and the stopper 6 is attached to the shaft column 11 by the tapping screw 21 (see FIG. 6). It is attached so that it does not fall off from the shaft column 11 by being fixed by (see). In this case, the mainspring spring 2 is housed in the lower portion 35 of the drum body 31, and the other end of the mainspring spring 2 is fixed to the peripheral wall of the lower portion 35. 5 It is biased to rotate in the counterclockwise direction.

The stopper 6 is formed by projecting a cylindrical fixed column 62 at the center of the bottom surface of the bottom wall of a cylindrical stopper body 61 having a short shaft with a bottom. The stopper 6 is provided in the hollow portion of the drum body 31. By inserting the tip of the fixed column 62 into the shaft hole of the drum main body 31 and covering the tip of the shaft column 11 of the housing 1 with the insertion, the tapping screw 21 is screwed into the shaft column 11 through the fixed column 62. Stopper 6
Is fixed to the housing, so that the drum 31 can move the shaft 1
It is designed so that you cannot get out of 1.

Further, as shown in FIG. 6, terminal pieces 63 and 64 made of a highly conductive metal such as a copper plate are attached to the upper surface of the bottom wall of the stopper body 61. Elastic contacts 65 and 66, which are respectively provided integrally with the shafts 64 and 64, and which are bent in a substantially V shape, penetrate the bottom wall of the stopper body 61 and project into the hollow portion upper portion 33 of the drum body 31, and the tip portion thereof. Is in elastic contact with the contact plates 42 and 43, and the elastic contacts 65 and 66 and the contact plates 42 and 43 are electrically connected regardless of the rotation angle of the winding drum 3. It is supposed to become. Then, by connecting the lead wires 67 from the power supply section of the electric device to the terminals 63 and 64, the current from the cord 4 is guided to the power supply section of the electric device.

A button support 7 is integrally provided on the upper end of the stopper 6 so as to project radially outward from a part of the peripheral edge of the stopper 6.
Button mounting recess 13 formed at the upper end of the flat wall 12
Has reached. The button support 7 has a substantially rectangular plate shape whose cross section is formed into a substantially horizontal C shape, and has a convex hollow portion 71.
(See FIG. 3). One wide end of the hollow portion 71 is open to the outside, and the other narrow end is positioned inside the ring gear 5 fixed to the winding drum 3. Further, a spring support protrusion 72 is provided so as to project along the axial direction at the other narrow end portion, and a coil spring 73 is wound and supported by the spring support protrusion 72 (see FIG. 6). Furthermore, as shown in FIGS.
A square through hole 75 is formed in the upper wall 74 of the support 7.

A lock body 8 is arranged at the other narrow end of the hollow portion of the support body 7. As shown in FIG. 2, the lock body 8 has a substantially block-shaped main body 81 having a substantially wedge-shaped ratchet pawl 82 projecting integrally from one end surface thereof, and an abutting piece 83 provided at the other end of the upper surface thereof. It is integrally provided upward, and a spring insertion hole 84 (see FIG. 6) is formed in the other end surface of the main body 81, and guide ridges 85, 85 are integrally provided on both side surfaces. is there. The lock body 8 has guide rails 85, which are formed in rail grooves (not shown) formed on both side surfaces of the other narrow end of the hollow portion of the support body 7.
85 is slidably inserted, and the spring insertion hole 84
With the coil spring 73 and the spring support protrusion 72 supporting the coil spring 73 inserted therein, the support 7
It is disposed movably along the radial direction of the winding drum 3 in the other narrow end of the hollow portion (inside the ring gear 5) and is urged outward by the coil spring 73.

The lock body 8 is urged outward by the coil spring 73 inside the ring-shaped gear 5, and as shown in FIG. 3, the ratchet pawl 82 of the lock body 8 has a ratchet recess of the ring-shaped gear 5. The winding spring 3 is engaged with the spring 51 to prevent the winding drum 3 from rotating counterclockwise. When the drum 3 is rotated clockwise against the biasing force of the mainspring 2,
By the action of the taper portions formed on the ratchet pawl 82 and the ratchet recess 51, respectively, the ratchet pawl 82 is pressed inward to release its locked state, and the drum can be rotated clockwise. When the force to rotate the drum 3 clockwise is released, the spring spring 2
Thus, when the drum 3 rotates counterclockwise and the first ratchet recess 51 coincides with the ratchet pawl 82, the lock body 8 is moved outward by the coil spring 73 so that the ratchet pawl 82 and the ratchet recess 51 engage. Drum 3
Counterclockwise rotation is locked. That is, the ratchet mechanism is constituted by the inner peripheral surface of the ring gear 5 and the lock body 8.

A lock release button 9 is arranged on the wide side of the hollow portion of the button support 7. As shown in FIGS. 2 and 7, the unlock button 9 has a lower end surface and a base end surface at one end of a square plate-shaped substrate 91 having a substantially wedge-shaped locking projection 96 protruding from the center of the upper end surface. Is provided with a box-shaped button portion 92 which is opened, and a pressing piece 93 having an L-shaped cross section whose tip portion is bent downward at the other end. A damper 95 provided with a damper gear 94 having a predetermined rotation resistance is attached in the button portion 92 of the unlock button 9 with the damper gear 94 facing rearward. In addition, as the damper 95,
Any damper may be used as long as it has a damper gear having a predetermined rotation resistance, and various dampers such as an oil damper, a governor damper, and an air damper can be used.

As shown in FIGS. 4 and 5, the lock release button 9 has a base plate 91 on which the button support 7 is formed.
Is slidably inserted in the wide portion of the hollow portion along the radial direction of the take-up drum 3, and a locking projection 96 protruding from the upper surface of the substrate 91 has a square through hole 75 of the support 7. It is loosely fitted inside (see Fig. 6). At this time, the button portion 92 of the lock release button 9 is inserted into the button mounting recess 13 of the housing 1 and protrudes outward from the housing 1, and the pressing piece 93 has a narrow hollow portion of the support body 7. The state in which the tip is abutted against the abutment piece 83 of the lock body 8 and the damper gear 94 of the damper 95 is separated from the engaging teeth 52 formed on the outer peripheral surface of the ring gear 5 by a predetermined distance. (See FIG. 4).

Then, as shown in FIG. 5, when the button portion 92 of the lock release button 9 is pressed P, the release button 9 moves along the radial direction of the winding drum 3 and its pressing piece. 93 presses the contact piece 83 of the lock body 8 to move the lock body 8 inward, whereby the ratchet pawl 82 provided on the lock body 8 and the inner peripheral surface of the ring gear 5 are provided. The engagement state with the ratchet recess 51 is released, and the winding drum 3 is rotated counterclockwise in the drawing (cord winding direction) by the urging force of the mainspring 2. Further, at the same time, the damper gear 94 moves integrally with the lock release button 9 and meshes with the engaging teeth 52 formed on the outer peripheral surface of the ring gear 5, and due to the rotation resistance of the damper gear 94, the winding drum 3 is rotated. The rotation of is slowed down. Further, when the pressed state of the button portion 92 is released from this state, the lock body 8 is moved outward by the coil spring 73, whereby the pressing piece 93 of the lock release button 9 is pressed outward and the release button 9 is released. The whole thing is moved outward and is restored to its original state. That is,
The lock release button 9 constitutes a lock release means, and the damper gear 94 and the ring gear 5 constitute a speed reduction means.

Next, the operation of this cord reel will be described. The cord reel of the present embodiment has the mounting ear portion 14,
By fixing 14 with a screw, it is installed in the housing of electric equipment such as a radio cassette tape recorder or an electric vacuum cleaner, and the cord 4 is pulled out at the time of use, and the cord 4 pulled out by pressing the lock release button 9 after use is automatically operated. It is intended to be rolled up and stored.

First, when pulling out the cord 4, the front end of the cord 4 is grasped by hand and the cord 4 is pulled out from the inside of the housing 1. As a result, the tension of the cord 4 causes the winding drum 3 to rotate clockwise in the figure against the biasing force of the main spring 2, and the cord 4 is pulled out. At this time, due to the action of the taper portions formed on the ratchet pawl 82 and the ratchet concave portion 51, respectively, the ratchet pawl 82 is pressed inward to release the locked state from each other, and the drum is rotated clockwise. You can Then, after the cord is pulled out to a desired length, when the pulling out work is completed, the drum 3 is rotated counterclockwise by the mainspring 2 and the lock body 8 is locked when the first ratchet recess 51 coincides with the ratchet pawl 82. The coil spring 73 moves outward to engage the ratchet claw 82 and the ratchet recess 51, and the rotation of the drum 3 in the counterclockwise direction is locked. As a result, the cord 4 is held in the pulled-out state to a desired length, and the plug 41 at the tip of the cord 4 is inserted into an outlet to use an electric device.

Next, when the plug 4 is pulled out from the outlet and the cord 4 is to be stored, after pulling out the plug 41 from the outlet, the button portion 92 of the unlock button 9 is removed as shown in FIG. Press P. As a result, the ratchet pawl 82 of the lock body 8 and the ratchet recess 51 of the ring gear 5 are operated by the above-described operation.
The winding drum 3 is rotated counterclockwise in the figure by the mainspring 2, and the cord 4 is automatically wound around the winding drum 3. At this time, the damper gear 94 of the damper 95 attached to the lock release button 9 meshes with the engaging teeth 52 provided on the outer peripheral surface of the ring-shaped gear 5 fixed to the winding drum 3 to cause the damper gear 94 to move. Due to the rotation resistance, the winding drum 3 rotates slowly. Then, when the pressing P of the lock release button 9 is released when the winding of the cord 4 is completed,
The coil spring 73 moves the lock body 8 outwardly, whereby the lock release button 9 moves outwardly and returns to the original state.

Therefore, the winding of the cord 4 is carried out slowly, and the end of the cord 4 does not flutter when the cord 4 is wound, and the housing 1 does not vibrate to produce an unpleasant vibration noise. The cord 4 can be wound around. When pulling out the cord 4, the damper gear 94
Is separated from the ring-shaped gear 5, and the damper gear 94 and the ring-shaped gear 5 mesh with each other only when the locked state is released and the cord 4 is wound up, so that the deceleration action is performed. Therefore, the cord 4 can be pulled out easily and speedily.

Next, FIGS. 8 to 11 show a cord reel according to another embodiment of the present invention, in which the lock body 8 in the first embodiment is omitted and the ratchet pawl 82 is provided. As shown in FIG. 11, the lock release button 9a is directly provided with corrugated plate springs 97, 97 instead of the pressing piece 93 (see FIG. 7) of the first embodiment. The lock release button 9a is provided in place of the hollow narrow portion of the button support 7 and is provided with two leaf spring insertion recesses 76, 76 (FIGS. 8 and 9).
The leaf springs 97, 97 are inserted into the inside of the ring gear 5, and the ratchet pawl 82 is arranged inside the ring gear 5.

This cord reel has the above-mentioned leaf springs 97, 97.
Thus, the ratchet pawl 82 and the lock release button 9a are integrally urged outward. That is, as shown in FIG. 9, the lock release button 9a is normally set to the leaf spring 9 as shown in FIG.
The ratchet claws 82 provided on the lock release button 9a are urged outward by the urging force of 7, 97 to form the ratchet recess 51 formed on the inner circumference of the ring gear 5.
And the take-up drum 3 is locked against the biasing force of the mainspring 2, and when the button portion 92 of the unlock button 9a is pressed from this state as shown in FIG. , The lock release button 9a moves inward against the biasing force of the leaf springs 97, 97, and the ratchet pawl 82 and the damper gear 94 move inward integrally therewith, whereby the ratchet pawl 82 and the ratchet recess are formed. The engagement state with 51 is released, the winding drum 3 is rotated in the cord winding direction by the urging force of the main spring 2, and the damper gear 94 meshes with the engaging tooth 52 on the outer periphery of the ring gear 5 to wind. The cord winding speed of the drum 3 is reduced.

Therefore, according to this cord reel, the lock body 8 and the coil spring 73 for urging the lock body 8 in the first embodiment can be omitted to reduce the number of parts, and at the same time, the number of these members can be reduced. The assembling step can be omitted, which can contribute to cost reduction. Since the other configurations and effects are similar to those of the first embodiment, the same components are designated by the same reference numerals and the description thereof will be omitted.

The cord reel of the present invention is not limited to the above embodiment, but can be variously modified within the scope of the gist of the present invention. For example, in the above embodiment,
Although the damper gear 94 is configured to mesh with the ring gear 5 only when the cord 4 is wound up by interlocking with the lock release operation by the lock release buttons 9 and 9a, the damper gear 94 always meshes with the ring gear 5. The lock release buttons 9 and 9a
An interlocking method other than the method of attaching the damper gear 94 to the above may be used, and a means other than the damper gear may be used as the speed reducing means. Furthermore, in the above-mentioned embodiment, the cord reel is configured as a unit, and this unit is attached to the housing of the electric device. However, the cord reel of the present invention can be directly configured in the housing of the electric device. The unit type cord reel of the embodiment is constructed, the outlet plug is directly provided on the cord reel, the cord reel is attached to the outlet side, the cord is pulled out from the cord reel, and the cord pulled out to the electric device is connected. You can also Further, other configurations may be variously modified within the scope of the present invention.

[0035]

As described above, according to the cord reel of the present invention, the winding speed at the time of winding the cord is reduced by the decelerating means such as the damper gear to prevent the flapping of the cord and the generation of vibration noise from the housing. It can be prevented as much as possible. Also, by linking the engagement between the damper gear and the gear fixed to the winding drum with the lock release operation by the lock release button, the deceleration effect can be produced only when the cord is wound up. The winding speed can be reduced without deteriorating the drawability.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cord reel according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the cord reel.

FIG. 3 is a plan view showing the cord reel and showing a state in which an upper wall of a button support and an unlock button are removed.

FIG. 4 is a plan view showing the cord reel and showing a state in which an upper wall of a button support is removed.

FIG. 5 is a plan view showing a state of winding the cord reel and showing a state in which an upper wall of the button support is removed.

FIG. 6 is a cross-sectional view taken along the line AA of FIG. 4 showing the cord reel.

FIG. 7 is a view showing a lock release button constituting the cord reel, (A) is a plan view, (B) is a side view, and (C).
Is a back view.

FIG. 8 is a plan view showing a cord reel according to another embodiment of the present invention with the upper wall of the button support removed.

FIG. 9 is a plan view showing the state of winding the cord reel and showing a state in which an upper wall of the button support is removed.

FIG. 10 is a cross-sectional view showing the cord reel taken along line BB in FIG. 8.

FIG. 11 is a view showing a lock release button constituting the cord reel, (A) is a plan view, (B) is a side view,
(C) is a rear view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Wind-up spring (biasing means) 3 Winding drum 4 Code 5 Ring gear 51 Ratchet recess 52 Engaging tooth 6 Stopper 7 Button support 8 Lock body 82 Ratchet pawl 9, 9a Lock release button (lock release means) 94 Damper gear (decelerator) 95 Damper

Claims (5)

[Claims] 1. A winding drum that is rotatably supported and holds a cord around its outer circumference, a biasing means that biases the winding drum in one rotation direction, and a biasing force of the biasing means. The ratchet mechanism that locks the rotation of the winding drum against it, the lock release means that releases the locked state of the winding drum by the ratchet mechanism, and the winding drum by the urging force of the urging means. A cord reel comprising a speed reducing means for speeding down rotation. 2. The deceleration means meshes a damper gear having a predetermined rotation resistance with a gear provided on a winding drum, and when the winding drum is rotated by the urging force of the urging means, the rotation resistance of the damper gear is used. The cord reel according to claim 1, wherein the cord reel is configured to reduce the rotation of the winding drum. 3. A lock release button is provided as a lock release means for releasing a locked state of a winding drum by the ratchet mechanism by pressing a ratchet pawl constituting the ratchet mechanism, and a damper gear is unlocked by the lock release button. The cord reel according to claim 2, wherein the damper gear meshes with the gear of the take-up drum only when the lock is released in association with the operation. 4. A ring-shaped gear having a plurality of ratchet recesses formed on the inner peripheral surface and engaging teeth provided on the entire outer peripheral surface is fixed to one end surface of the winding drum, and the ring-shaped gear is formed. A ratchet pawl that engages with the ratchet recess is arranged inside the gear to form a ratchet mechanism, and a lock release button is arranged on one end surface side of the winding drum so as to be able to advance and retreat along the radial direction of the winding drum. The ratchet pawl is installed by bringing one end of the lock release button into contact with the ratchet pawl, and the one end of the lock release button presses the ratchet pawl to release the engagement between the ratchet pawl and the ratchet recess. A lock release means for releasing the locked state of the take-up drum by a mechanism is configured, and further, a damper gear is attached to the lock release button, and the lock release button is used. 4. The cord reel according to claim 3, wherein the reduction gear is configured so that the damper gear meshes with the engaging teeth of the ring gear when unlocked. 5. A ring-shaped gear having a plurality of ratchet recesses formed on the inner peripheral surface and engaging teeth provided on the entire outer peripheral surface, is fixed to one end surface of a winding drum, and the winding is performed. A lock release button is arranged on one end surface side of the drum so as to be able to move forward and backward along the radial direction of the winding drum, and a ratchet pawl is integrally provided on the lock release button so as to be located inside the ring gear. , The damper gear is attached so as to be located outside the ring-shaped gear, and when the lock release button is urged outward and the lock release button is pressed against the urging force, the damper gear is integrated with the lock release button. The ratchet pawl is pressed to release the engagement between the ratchet pawl and the ratchet recess, the lock state of the winding drum is released, and the damper gear is connected to the ring gear. The cord reel according to claim 3, wherein the cord reel is configured to mesh with the engaging tooth of.