JP2008029367A - Retractable hook device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent or substantially suppress a fluctuation in turning movement of a hook member 12 in a retractable hook device H making a hook member 12 retracted and held in a retraction chamber R of a hook case 11 against the spring force of a torsion spring 33, ready for use by being turned outward from the retraction chamber R and protruded in a lateral direction by releasing operation of turning regulation. <P>SOLUTION: An operation mechanism 30 turning the hook member 12 includes a first operation lever 31 whose base end portion is pivoted turnably in a hook case 11, a second operation lever 32 whose base end portion is integrally turnably coupled to a pivotally supporting portion of the hook member 12, a coupling mechanism 30a operatively coupling both the operation levers 31, 32 to each other, and the torsion spring 33 for biasing the first operation lever 31 so as to be turned. The coupling mechanism 30a functions such that the second operation lever 32 turns and the hook member 12 protrudes outside when the first operation lever 31 turns. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a retractable hook device that is disposed in a passenger compartment of an automobile and used for hanging clothes or the like.

  As one type of retractable hook device, a hook case having a storage chamber that opens to one side, and a base end portion of the hook case that is pivotally supported via a support shaft in the storage chamber are stored in the same manner. A hook member housed in the room, a torsion spring that urges the hook member to protrude outside through the opening of the storage chamber, and is placed outside the hook member against the torsion spring. There is a retractable hook device having a holding mechanism that functions to release the restriction of the rotation of the hook member by restricting the rotation of the hook member, and to release the restriction of the rotation of the hook member by the pushing operation of the hook member (see Patent Document 1).

In the retractable hook device of this type, the torsion spring is engaged with the outer periphery of the support shaft that pivotally supports the hook member in the hook case, and one end of the torsion spring is locked to the hook case. Locked to the hook member. In this assembled state, the torsion spring urges the hook member to rotate and project outside through the opening of the storage chamber of the hook case. Further, in the retractable hook device of this type, a shim made of an elastic body is interposed between the outer periphery of the support shaft that pivotally supports the hook member and the through hole through which the support shaft on the side wall of the hook case is inserted. The return speed of the torsion spring is adjusted by the fitting resistance between the shim and the support shaft. Further, by adjusting the return speed of the torsion spring, the rotation speed at which the hook member protrudes to the outside through the opening of the storage chamber to be ready for use is adjusted.
Japanese Utility Model Publication No. 7-17655

  By the way, in the retractable hook device of this type, since the rotation angle and the rotation amount protruding to the outside of the hook member are small, it is difficult to select the spring force of the torsion spring, and the rotation speed protruding to the outside of the hook member. There is a possibility that the rotation of the hook member may vary such that the rotation of the hook member is fast or slow, or the rotation of the hook member stops midway. In addition, the torsion spring has an assembly structure that is assembled between the hook case and the hook member while being fitted to the outer periphery of the support shaft that pivotally supports the hook member in the hook case. The attachment is not good.

  Accordingly, a first object of the present invention is to prevent the occurrence of variation in the rotation of the hook member by considering the transmission path of the urging force of the torsion spring to the hook member in the retractable hook device of the type. It is to greatly suppress. A second object of the present invention is to improve the assembly of the torsion spring and improve the assembly by considering the assembly part of the torsion spring in the retractable hook device of the type. This is to increase the degree of freedom in selecting the torsion spring and to stabilize the rotation of the hook member.

  The present invention relates to a retractable hook device, and the retractable hook device to which the present invention is applied is a retractable hook device of the type shown below. That is, the present invention relates to a hook case having a storage chamber that opens to one side, and a base end portion of the hook case that is pivotally supported via a support shaft in the storage chamber and stored in the storage chamber. A hook member to be rotated, a torsion spring that rotates the hook member to project outside through the opening of the storage chamber, and is urged to be usable, and the hook member is opposed to the torsion spring. The retractable hook device includes a holding mechanism that functions to release the restriction of the rotation of the hook member by restricting the rotation of the hook member and pushing the hook member.

  Thus, in the retractable hook device according to the present invention, the base end portion is pivotally supported by the hook case so as to be pivotable, and the base end portion is integrally rotated with the shaft support portion of the hook member. A second actuating lever connected to the first actuating lever and extending to the tip side of the first actuating lever; a cam groove provided in one of these actuating levers; and a slide provided in either one of the actuating levers. A coupling mechanism is provided having a cam pin that movably engages and operatively couples the two actuating levers, and the coupling mechanism pivots the second actuating lever when the first actuating lever pivots. Thus, the hook member functions to rotate outward, and the torsion spring biases the first operating lever to rotate.

  In the retractable hook device according to the present invention, the first operating lever is pivotally supported on a support shaft projecting outward on the side wall of the hook case, and the second operating lever is The hook member is connected to the tip end of the shaft support portion so as to be integrally rotatable and is positioned outside the side wall of the hook case, and the torsion spring is fitted to the outer periphery of the shaft support portion of the first operating lever. Thus, one end can be locked to the first operating lever and the other end can be locked to the outside of the hook case for assembly.

  In the retractable hook device according to the present invention, like the conventional retractable hook device of this type, the torsion spring can be used by rotating the hook member to project outside through the opening of the storage chamber. When the hook member is not in use, the hook member is in a state of being stored in the storage chamber of the hook case, the rotation of the hook member being restricted by the action of the holding mechanism. In order to rotate the hook member in the retracted state through the opening of the storage chamber and project it to the outside, the hook member in the retracted state is pushed to the back side of the storage chamber. As a result, the rotation restriction on the hook member by the holding mechanism is released due to the turning operation of the hook member to the back side, and if the pushing operation on the hook member is released, the hook member is attached to the torsion spring. It rotates by the urging action, and rotates by itself through the opening of the storage chamber and protrudes to the outside so that it can be used.

  Therefore, in the retractable hook device according to the present invention, the transmission path of the spring force of the torsion spring to the hook member is configured to be completely different from the conventional retractable hook device of this type. That is, the retractable hook device according to the present invention is connected to the first operating lever pivotally supported by the hook case so that the base end portion is pivotable, and the base end portion is rotatably connected to the shaft support portion of the hook member. A second actuating lever extending toward the distal end of the first actuating lever, a cam groove provided in one of these actuating levers, and a cam groove provided in either one of the two actuating levers so as to be slidable. And a connecting mechanism having a cam pin for operatively connecting the two operating levers to each other. The connecting mechanism is rotated by the second operating lever when the first operating lever is rotated. While being configured to rotate, the torsion spring is configured to bias the first actuating lever to rotate.

  In the retractable hook device having such a configuration, when the hook member in the retracted state is pushed to the back side of the storage chamber, the rotation restriction on the hook member by the holding mechanism is released, and the pushing operation on the hook member is released. For example, the first operating lever is rotated by the action of the spring force of the torsion spring, and the second operating lever is rotated via the coupling mechanism. Since the second actuating lever is coupled to the hook member so as to be rotatable together with the hook member, the hook member rotates integrally with the second actuating lever and protrudes outside through the opening of the storage chamber of the hook case. Ready for use.

  Thus, in the retractable hook device according to the present invention, the operating force resulting from the spring force of the torsion spring is transmitted to the hook member via the first operating lever, the coupling mechanism, and the second operating lever. The hook member is rotated, and the operating force of the torsion spring acts on the hook member in a flat state with respect to the rotation of the hook member. Smooth rotation is possible. In other words, it is possible to prevent or greatly suppress the occurrence of variations in the rotation of the hook member.

  In the retractable hook device according to the present invention, the first operating lever is pivotally supported on a support shaft projecting outwardly on the side wall of the hook case, and the second operating lever is a shaft of the hook member. The one end of the first operating lever is connected to the front end of the support portion so as to be integrally rotatable and positioned outside the side wall of the hook case, and the torsion spring is fitted to the outer periphery of the shaft support portion of the first operating lever. And the other end is locked to the outside of the hook case and assembled. If such a configuration is adopted, the assembly of the torsion spring is improved, and the freedom of selection of the torsion spring is increased due to the improvement of the assembly, so that the rotation operation of the hook member is stabilized. be able to.

  The present invention relates to a retractable hook device. A retractable hook device according to the present invention includes a hook case having a storage chamber opened on one side, and a base end portion pivotally supported via a support shaft in the storage chamber of the hook case so as to be rotatable. A hook member stored in the housing, a torsion spring that rotates the hook member to project outside through the opening of the storage chamber and urges it to be usable, and to the outside of the hook member against the torsion spring And a holding mechanism that functions to release the restriction of the pivoting operation of the hook member by the pushing operation of the hook member.

  1 and 2 show an embodiment of a retractable hook device according to the present invention. FIG. 1 is a front view of the retractable hook device H according to the embodiment, and is a front view showing a part of the operating mechanism in section. FIG. 2 is an exploded view of the retractable hook device H. FIG. The retractable hook device H includes a hook case 11 and a hook member 12 constituting the hook device main body 10, a trace member 21 and a leaf spring 22 constituting the holding mechanism 20, a first actuating lever 31 constituting an actuating mechanism 30, 2 The operation lever 32 and the torsion spring 33 are the main constituent members. The first operating lever 31 corresponds to the first operating lever in the present invention, and the second operating lever 32 corresponds to the second operating lever in the present invention.

  The hook case 11 constituting the hook device body 10 is a box body having a U-shaped cross section, and includes a storage chamber R that opens to one side. The hook member 12 includes a columnar base portion 12a and a hook-shaped hook portion 12b extending from a part of the base portion 12a and extending through the support shaft 13 as shown in FIGS. The case 11 is pivotally supported so as to be rotatable. The support shaft 13 is inserted through the through hole 11a in one of the left and right wall portions of the hook case 11, the through hole 12c of the base portion 12a of the hook member 12, and the through hole 11b in the other of the left and right wall portions of the hook case 11. The hook member 12 is pivotally supported by the base 12a so as to be rotatable. Thus, the hook member 12 is pivotally supported so as to be able to rotate in and out of the storage chamber R through the opening of the hook case 11.

  The holding mechanism 20 has a function of restricting the rotation operation of the hook member 12 and a function of releasing the restriction of the rotation operation of the hook member 12 by a release operation, and includes a trace member 21, a leaf spring 22, and It is constituted by a cam groove 23 provided in a part of the outer peripheral surface of the base portion 12a of the hook member 12. The holding mechanism 20 is a conventionally known mechanism taught in Patent Document 1 at the beginning, and the trace member 21 is a U-shaped pin, and the hook case 11 is formed by a pin-shaped attachment leg 21a. The pin-shaped trace portion 21b extends to the cam surface side of the cam groove 23 through a through hole provided in the back wall portion. The leaf spring 22 is attached to the outside below the back wall portion of the hook case 11, and makes the trace portion 21 b of the trace member 21 elastically contact the cam surface of the cam groove 23.

  The cam groove 23 constituting the holding mechanism 20 is formed in a special cam shape as taught in Patent Document 1 at the beginning, and the trace portion 21b of the trace member 21 is locked by the locking portion. The first function for restricting the pivoting movement of the hook member 12 and the second function for allowing the hook member 12 to pivot about 90 degrees when the latched state is released. ing.

  In the retractable hook device H equipped with the holding mechanism 20, an operating force resulting from a spring force of a torsion spring 33 constituting an operating mechanism 30 described later is constantly applied to the hook member 12. In a state in which the trace portion 21b of the member 21 is locked to the locking portion of the cam groove 23, the hook member 12 is in a state in which the pivoting operation of the hook member 12 is restricted. The hook case 11 is held in a standing state in the storage chamber R of the hook case 11. In order to make the hook member 12 in the retracted state usable, the hook member 12 in the retracted state is pushed in the direction of arrow A shown in FIG. As a result, the locking of the trace portion 21b of the trace member 21 with respect to the locking portion of the cam groove 23 is released, and the restriction of the rotation operation of the hook member 12 is released.

  The operation mechanism 30 includes a first operation lever 31, a second operation lever 32, and a torsion spring 33 as main constituent members. Between the first operation lever 31 and the second operation lever 32, both operation levers 31, 32 are provided. Are connected to each other.

  The first actuating lever 31 constituting the actuating mechanism 30 has a cylindrical shaft support 31b provided at the base end of the lever main body 31a as a support shaft 11c protruding from the right side wall portion of the hook case 11 shown in the figure. The second operating lever 32 is pivotally supported via the support shaft 13 and is positioned along the right side wall portion of the hook case 11 in the illustrated manner. The hook member 12 is connected to one side of the through hole 12c so as to be integrally rotatable. In the first operating lever 31 and the second operating lever 32, their tip portions extend opposite to each other and are operatively connected to each other via a connecting mechanism 30a.

  The second operating lever 32 is fitted to the outer periphery of the support shaft 13 that pivotally supports the hook member 12 and is fitted to the through hole 12c of the hook member 12 so as to be integrally rotatable. However, the support shaft 13 is fitted through a flexible shim 13a. Further, the support shaft 13 penetrates through the shim 13b at the other end of the through hole 12c of the hook member 12. Thereby, both the shims 13 a and 13 b provide a fitting resistance between the support shaft 13 and the hook member 12, thereby applying a predetermined rotational load to the hook member 12.

  As shown in FIGS. 1, 5, and 6, the coupling mechanism 30 a is configured by a cam pin 34 provided at the distal end portion of the first operating lever 31 and a cam groove 35 provided at the distal end portion of the second operating lever 32. Has been. The cam groove 35 has a shape that bends and extends in a substantially U-shape from the shaft support portion on the proximal end side of the second operation lever 32 toward the distal end side, and the distal end portion of the lever main body 31 a of the first operation lever 31. A cam pin 34 provided in the cam groove 35 is inserted into the cam groove 35. The cam pin 34 is slidable in the cam groove 35 in the longitudinal direction thereof, and the coupling mechanism 30a operatively connects the first operating lever 31 and the second operating lever 32 to each other at their distal ends. It is connected.

  In the torsion spring 33 constituting the operating mechanism 30, the coil portion 33 a is fitted to the outer periphery of the support shaft 11 c that pivotally supports the first operating lever 31, and one end portion 33 b is connected to the illustrated right side wall of the hook case 11. The other end 33c is locked to the one side edge 31c of the lever main body 31a of the first operating lever 31. In the assembled state of the torsion spring 33, the spring force of the torsion spring 33 is set so as to act to lift the first operating lever 31 upward about the shaft support portion of the base end portion 31b.

  In the operation mechanism 30, when the cam pin 34 is positioned on the proximal end side of the cam groove 35 in operation, the hook member 12 is turned upright to stand upright in the storage chamber R of the hook case 11. When the cam pin 34 is positioned on the distal end side of the cam groove 35 and is set to be retracted (see FIG. 5), the hook member 12 turns down and lies sideways from the inside of the storage chamber R of the hook case 11. It is set to protrude (see FIG. 6). The torsion spring 33 has an assembly structure that is assembled to the first operating lever 31 so that the maximum spring force acts on the second operating lever 32 in a state where the hook member 12 is stored in the standing state. ing.

  In the retractable hook device H configured as described above, the torsion spring 33 rotates the hook member 12 to the outside through the opening of the storage chamber R as in the conventional retractable hook device of this type. The hook member 12 is urged so as to be in a usable state. When the hook member 12 is not used, the hook member 12 is restricted from rotating by the action of the holding mechanism 20, and is shown in FIGS. Thus, it is in the state stored in the storage chamber R of the hook case 11.

  In this way, in order to make the hook member 12 in the storage state protrude to the outside through the opening of the storage chamber R and make it usable, the hook member 12 in the storage state is moved to the back side of the storage chamber R (the arrow in FIG. 3). Push in direction A). Thereby, due to the turning operation of the hook member 12 to the back side, the rotation restriction on the hook member 12 by the holding mechanism 20 is released, and if the pushing operation on the hook member 12 is released, the hook member 12 is The urging action of the torsion spring 33 causes the support shaft 13 to rotate about the rotation center B, and as shown in FIGS. .

  By the way, in the retractable hook device H, the transmission path of the spring force of the torsion spring 33 to the hook member 12 is configured to be completely different from the conventional retractable hook device of this type. The path is configured by the operating mechanism 30 provided in the retractable hook device H. The actuating mechanism 30 includes a first actuating lever 31, a second actuating lever 32, a torsion spring 33 assembled to the first actuating lever 31, and a connecting mechanism 30a operatively connecting the actuating levers 31 and 32 to each other. Configured. According to the operating mechanism 30 having such a configuration, the first operating lever 31 is rotated by the spring force of the torsion spring 33, and when the first operating lever 31 is rotated, the second operating lever 32 is rotated and the hook member is rotated. It functions to rotate 12 to the outside.

  In the retractable hook device H, when the hook member 12 stored in an upright state in the storage chamber R of the hook case 11 is pushed to the back side of the storage chamber R, the holding mechanism 20 rotates the hook member 12. When the movement restriction is released and the pushing operation on the hook member 12 is released, the first operating lever 31 is rotated by the action of the spring force of the torsion spring 33, and the second operating lever 32 is rotated via the connecting mechanism 30a. To move. Since the second operating lever 32 is connected to the hook member 12 so as to be integrally rotatable, the hook member 12 is rotated integrally with the second operating lever 32 to open the opening of the storage chamber R of the hook case 11. It protrudes to the outside through and becomes ready for use.

  Further, in the retractable hook device H, in order to store the hook member 12 which protrudes laterally from the inside of the storage chamber R of the hook case 11 and can be used in the storage chamber R in an upright state, FIG. The tip of the hook member 12 protruding in the lateral direction is lifted and rotated upward and backward. As a result, the second operating lever 32 constituting the operating mechanism 30 rotates integrally with the hook member 12 in the same direction, and the tip of the first operating lever 31 operatively connected to the second operating lever 32 is moved. At the same time, the tracing portion 21b of the tracing member 21 constituting the holding mechanism 20 is slid relative to the cam surface of the cam groove 23 formed in the hook member 12. The trace portion 21b of the trace member 21 is finally locked to the locking portion of the cam groove 23. As a result, the holding mechanism 20 restricts the rotation of the hook member 12 that has returned to the rotating state, and stores and holds the hook member 12 that has returned to the standing state in the storage chamber R of the hook case 11.

  Thus, in the retractable hook device H, the operating force resulting from the spring force of the torsion spring 33 is transmitted to the hook member 12 via the first operating lever 31, the coupling mechanism 30a, and the second operating lever 32. Thus, the hook member 12 is rotated, and the operating force of the torsion spring 33 acts in a flat state with respect to the rotation of the hook member 12, so that the rotation speed of the hook member 12 is constant. Thus, the hook member 12 can be smoothly rotated. In other words, it is possible to prevent or greatly suppress the occurrence of variations in the rotational movement of the hook member 12.

  Further, in the retractable hook device H, the first operating lever 31 is pivotally supported by its shaft support portion 31b so as to be fitted on a support shaft 11c projecting outward from the side wall of the hook case 11 so as to be rotatable. In addition, the second operating lever 32 is connected to the tip of the through hole 12c, which is the shaft support portion of the hook member 12, so as to be integrally rotatable, and is positioned outside the side wall of the hook case 11, and the torsion spring 33 is connected to the coil portion 33a. The one end 33 b is locked to the outside of the hook case 11 and the other end 33 c is locked to the first operating lever 31 in a state where the outer end of the shaft supporting portion 31 b of the first operating lever 31 is fitted. Assembling structure that is engaged with the one side edge portion 31b is employed. For this reason, while improving the assembly property of the torsion spring 33, the freedom degree of selection of the torsion spring 33 can be raised due to the improvement of the assembly property, and the rotation operation in the hook member 12 is further improved. Can be stabilized.

It is a front view of the state where a part of retractable hook device concerning one embodiment of the present invention was cut longitudinally. It is a disassembled perspective view which decomposes | disassembles the retractable hook apparatus and shows each structural member. It is a vertical side view of the state which stored the hook member of the retractable hook device. It is a vertical side view of the state which enabled use of the hook member of the retractable hook device. It is a side view of the state which accommodated the hook member of the action mechanism with which the retractable hook device is equipped. It is a side view of the state which enabled use of the hook member of the operating mechanism.

Explanation of symbols

H ... Retractable hook device, R ... Storage chamber, A ... Pushing operation direction, B ... Center of rotation, 10 ... Hook device body, 11 ... Hook case, 11a, 11b ... Through-hole, 12 ... Hook member, 12a ... Base part, 12b ... Hook part, 12c ... Through-hole, 13 ... Support shaft, 20 ... Holding mechanism, 21 ... Trace member, 21a ... Mounting leg part, 21b ... Trace part, 22 ... Leaf spring, 23 ... Cam groove, 30 ... Actuating mechanism, 30a ... coupling mechanism, 31 ... first actuating lever, 31a ... lever body, 31b ... shaft support, 31c ... one side edge, 32 ... second actuating lever, 33 ... torsion spring, 33a ... coil part, 33b ... one end, 33c ... other end, 34 ... cam pin, 35 ... cam groove.

Claims (2)

A hook case having a storage chamber that opens to one side, and a hook member that is pivotally supported via a support shaft in the storage chamber of the hook case and is stored in the storage chamber. A torsion spring that urges the hook member to rotate and protrudes to the outside through the opening of the storage chamber, and to rotate the hook member to the outside against the torsion spring. Is a retractable hook device having a holding mechanism that functions to release the restriction of the pivoting operation of the hook member by pushing the hook member, and the retractable hook device has a base end portion attached to the hook. A first actuating lever pivotally supported by the case, and a base end portion connected to a shaft supporting portion at the base end portion of the hook member so as to be integrally rotatable, on the distal end side of the first actuating lever; A second actuating lever, a cam groove provided in one of these actuating levers, and a cam groove provided in either one of the two actuating levers so as to be slidably engaged with each other. A connecting mechanism having a cam pin connected to the first operating lever, and the connecting mechanism functions to rotate the second operating lever to project the hook member to the outside when the first operating lever rotates. The retractable hook device characterized in that the torsion spring biases the first actuating lever to rotate. 2. The retractable hook device according to claim 1, wherein the first operating lever is pivotally supported by a support shaft protruding outward from a side wall of the hook case, and the second operating lever is The hook member is connected to the tip of the shaft support portion of the hook member so as to be integrally rotatable and is located outside the side wall of the hook case, and the torsion spring is fitted to the outer periphery of the shaft support portion of the first operating lever. A retractable hook device having one end locked to the first operating lever and the other end locked to the outside of the hook case.

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