JP3235155U - Reel take-up speed reducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reel take-up speed reduction device which can be easily assembled to a reel and has excellent maintainability and design. SOLUTION: A reel winding speed reducing device 1 has a drum 3 having a body 6 capable of winding and unwinding a long object, and a support for rotatably supporting the drum 3 around the axis of the body 6. A device provided on a reel 2 having an internal gear 4 having an internal tooth 12 and an internal gear 5 rotating together with the drum 3, which has a tubular shape opened at one end in the axial direction and can be attached to and detached from the drum 3. A cover material 13 provided, an external gear 14 having external teeth 19 that mesh with the internal teeth 12, and rotatably provided with respect to the cover material 13, and an external gear 14 provided inside the cover material 13 and rotating together with the external gear 14. This includes a brake shoe 15 that moves outward in the radial direction due to centrifugal force and comes into contact with the inner surface of the cover material 13. [Selection diagram] Fig. 2

Description

The present invention relates to a reel winding speed reducing device that reduces the winding speed when automatically winding a long object such as a reel hose or a cord.

Conventionally, the reel has a configuration in which the cord can be automatically wound by a spring. In this case, the winding speed is too fast, so if you take your hand off the cord and wind it up, the tip of the cord will be violent and the cord will come in contact with a person and cause injury, or the cord will come in contact with peripheral devices and surround it. There is a risk of damaging the equipment.

Therefore, a deceleration mechanism as disclosed in Patent Document 1 below has been proposed. In this deceleration mechanism, when the reel rotates in the direction in which the cord is wound, the gear meshed with the reel rotates, whereby the brake shoe provided on the rotation shaft of the gear moves radially by centrifugal force to brake. It is configured to come into contact with the drum. Therefore, the frictional force generated by the contact of the brake shoe with the brake drum acts to stop the rotation of the reel, and the cord can be wound at a low speed.

Japanese Unexamined Patent Publication No. 10-297836

However, the reduction mechanism of Patent Document 1 is not a configuration in which a gear, a brake shoe, and a brake drum are assembled, but a configuration in which the gear and the brake drum are separately installed in the chassis, so that it takes time and effort to install. Further, the deceleration mechanism of Patent Document 1 is not removable from the chassis, and maintainability after mounting is not taken into consideration. Further, the reduction mechanism of Patent Document 1 has exposed gears and the like, and does not look very good.

The present invention has been made in view of such problems, and an object of the present invention is to provide a reel take-up speed reduction device which can be easily assembled to a reel and has excellent maintainability and design.

The reel take-up speed reducing device according to the present invention includes a drum having a body capable of winding and unwinding a long object, a support for rotatably supporting the drum around the axis of the body, and an inner body. A reel take-up speed reduction device provided on a reel having teeth and an internal gear that rotates with the drum, which has a tubular shape opened at one end in the axial direction and can be attached to and detached from the drum. A cover material provided, an external gear having an external tooth that meshes with the internal tooth and rotatably provided with respect to the cover material, and an external gear provided inside the cover material and rotating together with the external gear. A brake shoe that moves outward in the radial direction by centrifugal force and comes into contact with the inner surface of the cover material is provided.

A shoe installation member for providing the brake shoe inside the cover material may be detachably provided on the cover material, and the brake shoe may be detachably provided on the shoe installation member.

The shoe installation member and the external gear may be rotatable together with the external gear and may be detachable from each other.

The brake shoe has a longitudinal shape that is convexly curved outward in the radial direction of the external gear, and the one end portion in the longitudinal direction moves outward in the radial direction so as to come into contact with the inner surface of the cover material in the longitudinal direction. The other end portion may be rotatably provided on the shoe installation member, and the brake shoe may be formed so that the one end side in the longitudinal direction is heavier than the other end side in the longitudinal direction.

The brake shoe has a hollow shape that opens to both ends in the lateral direction, and the brake shoe has one end in the longitudinal direction formed to be thicker than the other end in the longitudinal direction. The side may be formed so as to be heavier than the other end side in the longitudinal direction.

According to the present invention, it is possible to provide a reel take-up speed reduction device that can be easily assembled to a reel and has excellent maintainability and design.

It is a front view which shows an example of the reel provided with the take-up speed reduction apparatus of the reel which concerns on one Embodiment of this invention. It is a side view vertical sectional view of FIG. It is a figure which shows the winding speed reduction apparatus of the reel which concerns on embodiment of FIG. 1, (a) is a front view, (b) is a vertical sectional view. It is an exploded perspective view which shows the winding speed reduction apparatus of the reel which concerns on embodiment of FIG. 1, and shows the state seen from the rear. It is an exploded perspective view which shows the winding speed reduction apparatus of the reel which concerns on embodiment of FIG. 1, and shows the state seen from the front. It is a front view which shows the reel which the take-up speed reduction apparatus of the reel which concerns on embodiment of FIG. 1 is removed. It is a front view which shows the reel provided with the take-up speed reduction apparatus of the reel which concerns on embodiment of FIG. 1, and shows a part in a cross section. It is a partial enlarged view which shows the state which the brake shoe is not in contact with a cover material. It is a partial enlarged view which shows the state which the brake shoe is in contact with a cover material.

Hereinafter, a specific embodiment of the reel take-up speed reduction device according to the present invention will be described in detail with reference to the drawings. In drawings, the same or corresponding components are given the same reference number. It should be noted that the following is only one embodiment of the reel take-up speed reduction device according to the present invention, and the present invention is not limited to the following embodiments.

FIG. 1 is a front view showing an example of a reel provided with a reel take-up speed reduction device according to an embodiment of the present invention. FIG. 2 is a vertical sectional view of FIG. 1 in a side view, and shows a state seen from the right side. 3A and 3B are views showing a reel take-up speed reducing device according to the present embodiment, where FIG. 3A is a front view and FIG. 3B is a vertical sectional view. 4 and 5 are exploded perspective views showing the reel take-up speed reduction device according to the present embodiment, FIG. 4 shows a state seen from the rear, and FIG. 5 shows a state seen from the front. FIG. 6 is a front view showing a reel to which the reel take-up speed reduction device according to the present embodiment is applied, and shows a state in which the speed reduction device of the present embodiment is not attached. FIG. 7 is a front view showing a reel provided with a reel take-up speed reduction device according to the present embodiment, and shows a part of the reduction device in cross section. In each figure, long objects such as cords or hoses provided on the reels are omitted.

The reel take-up speed reduction device (hereinafter referred to as a speed reduction device) 1 of the present embodiment is applied (attached and used) to a reel 2 provided so that a long object (not shown) can be taken up and unwound. NS). As shown in FIGS. 1, 2, 6 and 7, the reel 2 is provided on a drum 3 provided so that a long object can be wound and unwound, a support 4 of the drum 3, and a drum 3. It has an internal gear 5 provided.

The drum 3 has a cylindrical body 6 capable of winding and unwinding a long object, a side plate 7 provided at the axial front end of the body 6, and a side plate 8 provided at the axial rear end of the body 6. And have. The other end in the longitudinal direction of the long object is fixed to the body 6 in a state where one end in the longitudinal direction of the long object is a free end. The side plates 7 and 8 have a substantially disk shape having a diameter larger than the outer diameter of the body 6. The side plates 7 and 8 may be fixed to the body 6 with screws, or may be integrally formed with the body 6. In this way, side plates 7 and 8 are provided in a flange shape at both ends of the body 6 in the axial direction.

The support 4 has a hollow shape having a substantially circular shape when viewed from the front, and can be divided into front and rear. Specifically, the support 4 has a first member 9 arranged on the front side and a second member 10 arranged on the rear side. The first member 9 has a substantially short cylinder shape that opens rearward, and the second member 10 has a substantially short cylinder shape that opens forward. The support 4 is formed in a hollow shape by screwing the rear end portion of the first member 9 and the front end portion of the second member 10 in a superposed state.

A rotation shaft 11 is provided at the substantially central portion of the support 4 along the front-rear direction. The rotating shaft 11 is provided so as to bridge the first member 9 and the second member 10. A drum 3 is rotatably supported on the rotating shaft 11 around the axis of the body 6. At this time, the drum 3 is housed inside the support 4. That is, the support 4 also has a function as a cover for covering the drum 3.

The internal gear 5 has internal teeth 12 and is an annular shape having a diameter smaller than the outer diameter of the side plate 7 on the front side of the drum 3. The internal gear 5 is provided on the side plate 7 or the like on the front side of the drum 3 so as not to rotate. Therefore, the internal gear 5 rotates together with the drum 3. The internal gear 5 is arranged on the same axis as the body 6.

Although not shown, the reel 2 has a conventionally known winding structure provided with a spring so that a long object can be automatically wound. The spring is provided in the body 6 of the drum 3 with one end connected to the rotating shaft 11 and the other end connected to the drum 3. Therefore, by pulling the tip of the exposed long object from the opening of the support 4, the drum 3 can be rotated and the long object can be unwound from the drum 3. Then, when the hand is released from the long object at an arbitrary position, the long object is held in a pulled out state by a stopper mechanism (not shown). When the long object is pulled out and then released, the lock by the stopper mechanism is released, and the drum 3 is automatically rotated by the spring in the opposite direction to the unwinding. As a result, the long object is wound around the drum 3.

The speed reducing device 1 of the present embodiment is provided on the reel 2 having such a configuration. The speed reducing device 1 has a cover material 13 detachably provided on the drum 3 so as not to rotate with the drum 3, an external gear 14 rotatably provided on the cover material 13, and a brake shoe provided inside the cover material 13. It is equipped with 15.

The cover material 13 has a cylindrical shape that opens at the rear end portion, which is one end portion in the axial direction, and is formed of, for example, ABS resin. A shaft portion 16 is provided on the bottom portion of the cover material 13 so as to project rearward. A flange portion 17 having a substantially triangular shape in front view is integrally formed at the rear end portion of the cover material 13. The flange portion 17 is not limited to being integrally formed with the cover material 13, and may be a separate body. A mounting hole 18 is formed in the flange portion 17 so as to penetrate the flange portion 17 in the front-rear direction.

The external gear 14 has external teeth 19 that mesh with the internal teeth 12 of the internal gear 5, and a through hole 20 that penetrates back and forth is formed in the central portion. A disk-shaped plate 21 is provided on the front surface of the external gear 14. The plate member 21 is fixed so as to rotate together with the external gear 14 in a state of being overlapped with the front surface of the external gear 14. On the front surface of the plate material 21, a concave portion 22 having a substantially oval shape in front view is formed so as to open forward. A shaft mounting hole 23 that penetrates back and forth is formed on the bottom surface of the recess 22 so as to correspond to the through hole 20 of the external gear 14. The external gear 14 having such a configuration is rotatably provided with respect to the shaft portion 16 of the cover material 13 as described later.

The brake shoe 15 has a longitudinal shape that is convexly curved outward in the radial direction of the external gear 14. Typically, the brake shoe 15 has a plate shape curved in a substantially arc shape so that the distance between both ends in the longitudinal direction is small. Further, the brake shoe 15 is hollow and opens on both ends in the lateral direction. The brake shoe 15 is made of 6-6 nylon, but is not limited thereto.

In the present embodiment, the brake shoe 15 is formed so that the one end side in the longitudinal direction is heavier than the other end side in the longitudinal direction. Here, the one end side in the longitudinal direction of the brake shoe 15 is formed thicker than the other end side in the longitudinal direction of the brake shoe 15, so that the one end side in the longitudinal direction of the brake shoe 15 is from the other end side in the longitudinal direction. Is also heavily formed. At the other end of the brake shoe 15 in the longitudinal direction, a shaft insertion hole 24 is formed so as to penetrate the brake shoe 15 in the front-rear direction.

As shown in FIGS. 4 and 5, the cover material 13 is detachably provided with a shoe installation member 25 for providing the brake shoe 15 inside the cover material 13. The shoe installation member 25 has a substantially circular plate shape when viewed from the front.

A shaft mounting portion 26 is formed in the central portion of the front surface of the shoe mounting member 25 so as to project forward. The shaft mounting portion 26 is formed with a shaft mounting hole 27 that opens forward. That is, the shaft mounting portion 26 is formed in a cylindrical shape that opens forward. A shoe mounting shaft 28 is formed on the front surface of the shoe mounting member 25 so as to project forward. In the illustrated example, since the two brake shoes 15 and 15 are used, the shoe installation member 25 is provided with the two shoe mounting shafts 28 and 28. The two shoe mounting shafts 28, 28 are arranged on the front surface of the shoe mounting member 25 so as to correspond in the radial direction with the shaft mounting portion 26 interposed therebetween.

A gear mounting portion 29 is formed at the center of the rear surface of the shoe mounting member 25 so as to project rearward. The tip of the gear mounting portion 29 is formed in a substantially oval shape when viewed from the rear.

As shown in FIGS. 2 to 5, the brake shoe 15 and the external gear 14 are provided on the cover material 13. The brake shoe 15 has a plate material 30 having a diameter larger than that of the shoe mounting shaft 28 in a state where the shoe mounting shaft 28 of the shoe mounting member 25 is inserted into the shaft insertion hole 24 formed at the other end in the longitudinal direction thereof. By screwing the screw 31 into the shoe mounting shaft 28 from the front, the shoe mounting member 25 is rotatably provided around the axis of the shoe mounting shaft 28. With such a configuration, the brake shoe 15 is detachably provided on the shoe installation member 25. In this way, the other ends of the two brake shoes 15 and 15 in the longitudinal direction are rotatably provided on the shoe installation member 25, respectively.

In this state, the shaft portion 16 formed in the cover material 13 is inserted into the shaft mounting hole 27 formed in the shaft mounting portion 26 of the shoe mounting member 25, so that the shaft portion 16 can rotate around the axis of the shaft portion 16. The shoe installation member 25 is provided on the cover material 13. Then, the opening to the rear of the cover material 13 is closed by the lid material 32. The lid material 32 has a substantially circular plate shape when viewed from the front. A circular through hole 33 is formed in the central portion of the lid member 32 so as to penetrate back and forth. A plurality of lid mounting portions 34 are formed on the outer edge portion of the lid member 32 so as to extend outward. Each lid mounting portion 34 is formed with an insertion hole 35 penetrating back and forth.

The lid material 32 is arranged on the rear side of the shoe installation member 25 after the shoe installation member 25 to which the brake shoe 15 is attached is attached to the cover material 13, and the lid material 32 is arranged through the insertion hole 35 of each lid attachment portion 34. By screwing the screw 36 into the cover material 13, it can be attached to the cover material 13. At this time, the gear mounting portion 29 of the shoe mounting member 25 penetrates the through hole 33 of the lid member 32 and extends rearward. With such a configuration, the shoe mounting member 25 is detachably provided on the cover material 13. Since the brake shoe 15 is attached to the cover material 13 by using the shoe installation member 25 in this way, the brake shoe 15 is provided inside the cover material 13.

After the brake shoe 15 is provided on the cover material 13, the external gear 14 is provided on the cover material 13. The external gear 14 is provided with the substantially oval-shaped tip of the gear mounting portion 29 of the shoe mounting member 25 inserted into the substantially oval-shaped recess 22 of the plate material 21 from behind via the shaft mounting hole 23 of the plate material 21. By screwing the screw 37 into the gear mounting portion 29, the shoe mounting member 25 is provided. At this time, the external gear 14 is arranged on the rear side of the lid member 32. With such a configuration, the shoe installation member 25 and the external gear 14 can rotate the shoe installation member 25 together with the external gear 14, and can be attached to and detached from each other. Since the external gear 14 is attached to the shoe installation member 25 in this way, the external gear 14 is rotatably provided with respect to the cover material 13.

The speed reducing device 1 having the above configuration is detachably provided on the support 4 so as to correspond to the opening 38 formed by opening the first member 9 of the support 4 forward. In the speed reducing device 1, the rear end portion of the flange portion 17 of the cover material 13 is overlapped with the front end portion of the first member 9 in a state where the brake shoe 15 and the external gear 14 are provided on the cover material 13 as described above. The screw 39 is screwed into the first member 9 from the front through the mounting hole 18 to be attached to the first member 9. At this time, as shown in FIG. 7, the external gear 14 of the speed reducing device 1 is inserted into the support 4 through the opening 38 of the first member 9, and the external teeth 19 are inside the internal gear 5. It meshes with the teeth 12. Since the cover material 13 of the speed reducing device 1 is detachably provided on the support 4 in this way, the cover material 13 is detachably provided on the drum 3 via the support 4.

Next, the operation of the speed reducer 1 of the present embodiment will be described. 8 and 9 are partially enlarged front views showing a reel provided with the reduction gear according to the present embodiment, FIG. 8 is a state in which the brake shoe is not in contact with the cover material, and FIG. 9 is a state in which the brake shoe covers the reel. It shows the state of contact with the material.

As described above, in the reel 2 in a state where the long object is pulled out, once the long object is pulled and then released, the drum 3 automatically rotates and the long object is wound around the drum 3. .. When the drum 3 rotates, the internal gear 5 fixed to the drum 3 also rotates around the axis of the drum 3 together with the drum 3. When the internal gear 5 rotates, the external gear 14 that meshes with the internal gear 5 also rotates. Here, since the external gear 14 is rotatably provided on the shoe installation member 25 and the shoe installation member 25 is rotatably provided on the shaft portion 16 of the cover material 13, the external gear 14 is provided on the axis of the shaft portion 16. When rotated around, the shoe installation member 25 rotates around the axis of the shaft portion 16 together with the external gear 14.

When the shoe installation member 25 rotates, the two brake shoes 15 and 15 provided on the shoe installation member 25 also rotate together with the shoe installation member 25. As described above, the other end of the brake shoe 15 in the longitudinal direction is provided on the shoe mounting shaft 28 of the shoe mounting member 25 so as to be rotatable around the axis thereof. Therefore, as shown in FIG. 9 from the state of FIG. 8, the brake shoe 15 rotates together with the external gear 14, and one end in the longitudinal direction moves outward in the radial direction due to centrifugal force to reach the inner surface of the cover material 13. Contact. As a result, a frictional force is generated between the brake shoe 15 and the inner surface of the cover material 13, and the rotational speed of the drum 3 can be reduced.

On the other hand, as described above, the reel 2 can rotate the drum 3 and unwind the long object from the drum 3 by pulling the tip of the long object exposed from the opening of the support 4. .. At this time, the rotation of the drum 3 causes the shoe installation member 25 to rotate together with the external gear 14 as described above. However, since the rotation direction of the drum 3 is opposite to that at the time of unwinding, the two brake shoes 15 and 15 provided on the shoe installation member 25 rotate together with the shoe installation member 25, but the shoe mounting shaft 28 Does not rotate around the axis. As a result, the brake shoe 15 does not hinder the rotation of the drum 3 when pulling out a long object from the reel 2.

In the case of the speed reducing device 1 of the present embodiment, the cover material 13 is detachably provided on the drum 3 via the support body 4. Therefore, the speed reducing device 1 can be easily attached to the reel 2, and the installation workability can be improved. Further, the speed reducing device 1 can be easily replaced, and the maintainability of the speed reducing device 1 can be improved. Further, since the brake shoe 15 and the like are provided in the cover material 13, the inside of the speed reducing device 1 cannot be seen from the outside, the appearance can be improved, and the design is excellent.

Further, in the case of the speed reducing device 1 of the present embodiment, the brake shoe 15 is detachably provided on the shoe installation member 25 detachably provided on the cover material 13. Therefore, the brake shoe 15 can be removed from the speed reducing device 1, and the brake shoe 15 can be easily replaced.

Further, in the case of the speed reducing device 1 of the present embodiment, the external gear 14 is detachably provided on the shoe installation member 25 detachably provided on the cover material 13. Therefore, only the external gear 14 can be removed from the speed reducing device 1, and the external gear 14 can be easily replaced.

Further, in the case of the speed reducing device 1 of the present embodiment, the brake shoe 15 is formed so that the one end side in the longitudinal direction is heavier than the other end side in the longitudinal direction. Therefore, centrifugal force is likely to act on the brake shoe 15, and the brake shoe 15 can be easily moved outward.

Further, in the case of the speed reducing device 1 of the present embodiment, the brake shoe 15 is hollow and is formed so that the one end side in the longitudinal direction is thicker than the other end side in the longitudinal direction. The one end side in the longitudinal direction is formed to be heavier than the other end side in the longitudinal direction. Therefore, the brake shoe 15 can be easily formed in a configuration in which centrifugal force is easy to work.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. To the extent that those skilled in the art do not deviate from the scope and concepts of the present invention, changes or modifications to these embodiments belong to the technical scope of the present invention.

For example, in the above embodiment, the number of brake shoes 15 is two, but it may be one or three or more.

Further, in the above embodiment, one speed reducing device 1 is installed on the reel 2, but two or more may be installed on the reel 2.

1 Reel take-up speed reduction device 2 Reel 3 Drum 4 Support 5 Internal gear 6 Body 12 Internal tooth 13 Cover material 14 External gear 15 Brake shoe 19 External tooth 25 Shoe installation member

Claims (5)

A drum with a body that can wind and unwind long objects,
A support that rotatably supports the drum around the axis of the body, and
A reel take-up speed reduction device provided on a reel having internal teeth and having an internal gear that rotates with the drum.
A cylindrical cover material that opens at one end in the axial direction and is detachably provided on the drum.
An external gear that has external teeth that mesh with the internal teeth and is rotatably provided with respect to the cover material.
Reel take-up speed deceleration provided inside the cover material and provided with a brake shoe that rotates with the external gear to move outward in the radial direction by centrifugal force and come into contact with the inner surface of the cover material. Device. A shoe installation member for providing the brake shoe inside the cover material is detachably provided on the cover material.
The reel winding speed reduction device according to claim 1, wherein the brake shoe is detachably provided on the shoe installation member. The reel winding speed reduction device according to claim 2, wherein the shoe installation member and the external gear are rotatable together with the external gear and are removable from each other. The brake shoe has a longitudinal shape that is convexly curved outward in the radial direction of the external gear, and the one end portion in the longitudinal direction moves outward in the radial direction so as to come into contact with the inner surface of the cover material in the longitudinal direction. The other end is rotatably provided on the shoe mounting member.
The reel winding speed reduction device according to claim 2 or 3, wherein the brake shoe is formed so that one end side in the longitudinal direction is heavier than the other end side in the longitudinal direction. The brake shoe has a hollow shape that opens on both ends in the lateral direction.
The brake shoe is formed so that the one end side in the longitudinal direction is thicker than the other end side in the longitudinal direction, so that the one end side in the longitudinal direction is heavier than the other end side in the longitudinal direction. Item 4. The reel take-up speed reduction device according to item 4.

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