JP2003028130A - Hook device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart a high-grade feeling, suppress a striking noise when fixing a hook member to a use position, and impart comfortable operability. SOLUTION: This hook device is equipped with an outer tube 13 having an engagement protrusion 34 (a main body engagement part) on the periphery; an inner tube 12 having an engagement protrusion 24 (a hook engagement part) in a side part, inserted in the outer tube 13; and a rotation dumper 11 allowing a relative turn of the outer tube 13 and the inner tube 12 with resistance. The rotation dumper 11 is disposed between respective flange parts 202 formed in a hook member 200, around a support shaft 103. The engagement protrusion 24 formed in the inner tube 12 is engaged with a dumper engagement part 210 formed in at least one flange part 202 of the hook member 200, while the engagement protrusion 34 formed in the outer tube 13 is engaged with a damper engagement part 111 formed in an inner wall of a main body case 100.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook device which is mounted in a passenger compartment of an automobile or the like and is used for hooking a shopping bag or clothes. The present invention relates to a hook device that is axially supported and that can accommodate a hook member in a main body case.

[0002]

2. Description of the Related Art As a conventional hook device of this type, there is one disclosed in Japanese Patent Application Laid-Open No. 8-82385.
The retractable coat hook device disclosed in the publication has a hook case having a storage chamber, a storage position that is pivotally attached to the hook case, is stored in the storage chamber, and protrudes outward from the storage chamber. A hook member rotatably provided between the use position, an opening spring for biasing the hook member to rotate in the use position direction, and a hook member held in the storage position against the biasing force of the opening spring. In addition, it is provided with a holding mechanism capable of releasing the holding at the holding position by pushing the hook member.

[0003]

However, in the above-described conventional hook device, when the hook member is pushed in and the retracted state of the hook member by the holding mechanism is released, the hook member pivots vigorously by the urging force of the opening spring. Since the usage state is formed by the use, a feeling of luxury is not felt, and when the rotating hook member collides with the hook case and stops at the use position, a large hammering sound is generated, which gives the user discomfort. There was a fear. The present invention has been made in view of such circumstances, and an object thereof is to obtain a high-class feeling and to significantly suppress a hitting sound when the hook member is stopped at a use position, and to obtain comfortable operability. .

[0004]

In order to achieve the above-mentioned object, the invention of claim 1 forms a box-shaped main body case having an opening on the front side and having a hook accommodating space therein, and bearings formed on both sides of the base portion. The flange portion extends and is rotatably supported by the main body case by a support shaft supported by the side wall of the main body case through each bearing, and is rotated around the support shaft into the hook storage space of the main body case. A retractable hook member, a biasing member that biases the hook member in a direction to expose it from the hook storage space, and a holding state of the hook member in the hook storage space against the biasing force of the biasing member In addition, the locking means for releasing the holding state of the stored state by the pushing operation from the stored state, the outer cylinder having the main body engaging portion on the outer circumference, and the hook engaging portion on the side portion of the outer cylinder. A rotary damper that includes an inner cylinder fitted to the side, and the outer cylinder and the inner cylinder are relatively rotatable while having resistance, and the rotary damper includes a rotary damper of each flange portion formed on the hook member. The hook engaging portion formed on the inner cylinder is engaged with the damper engaging portion formed on at least one flange portion of the hook member between the main body case and the main body case. It is characterized in that the damper engaging portion formed on the inner wall is assembled with the main body engaging portion formed on the outer cylinder in an engaged state.

The invention of claim 2 is based on the premise of claim 1, in the rotary damper, the outer cylinder has a cylindrical space in a cylindrical wall, and one end of the space is closed. Formed in a shape, the inner cylinder is basically similar in shape to the outer cylinder, is formed to have a smaller diameter than the outer cylinder, and the outer wall of the inner cylinder enters the cylindrical space of the outer cylinder, The inner wall of the outer cylinder enters the cylindrical space of the inner cylinder, and the opening side end of the gap between the outer wall of the outer cylinder and the outer wall of the inner cylinder, the inner wall of the outer cylinder and the inner wall of the inner cylinder. An O-ring is interposed at the opening end of the gap,
A viscous substance is filled in a gap between the inner cylinder and the outer cylinder sealed by these O-rings, and a center hole of the inner cylinder forms an insertion hole of a support shaft that pivotally supports the hook member. It is characterized by doing.

Therefore, according to the first aspect of the invention, since the hook member can be rotated while braking by the rotary damper, the rotation in the direction of exposing from the hook storage space is slow and there is a sense of luxury. The operation is performed, and when it is stopped at the use position, a large hitting sound is not generated due to a collision with the main body case, and a comfortable operation feeling can be obtained.

Further, since the rotary damper can be miniaturized by combining the inner cylinder and the outer cylinder, it can be housed between the flange portions formed on the hook member, and the rotary damper can be projected to the outside. Also, there is no need to upsize the entire hook device.

According to the second aspect of the present invention, a more specific construction of the rotary damper is essential. A cylindrical space is formed in each of the inner cylinder and the outer cylinder, and the outer wall of the inner cylinder is the outer cylinder. Since it has a structure in which the inner wall of the outer cylinder enters the cylindrical space of the inner cylinder, the first gap between the inner wall of the inner cylinder and the inner wall of the outer cylinder, and the inner wall of the outer cylinder and the inner cylinder A second gap between the outer wall of the inner cylinder and a third gap between the outer wall of the inner cylinder and the outer wall of the outer cylinder is formed, and the gap formed between the inner cylinder and the outer cylinder is There are three layers from the center to the outside along the direction. Therefore, the contact area with the viscous substance filled in the gaps between these layers can be made larger. Therefore, compact and high braking force can be obtained.

Further, an O-ring is interposed between the opening-side end of the gap between the outer wall of the outer cylinder and the outer wall of the inner cylinder, and the opening-side end of the gap between the inner wall of the outer cylinder and the inner wall of the inner cylinder. As a result, the O-ring is arranged at a position displaced in the axial direction, so that the diameter can be reduced.

The rotary damper can also be constructed as follows. That is, in the configuration of claim 2, the O-ring groove is provided on the inner circumference of the opening-side end portion of the gap between the inner wall of the outer cylinder and the inner wall of the inner cylinder, and the annular cap is provided to close the O-ring groove. Good.

According to this structure, when the inner cylinder is inserted into the outer cylinder, the first O-ring is interposed between the inner cylinder and the outer cylinder, and the inner cylinder is inserted into the outer cylinder. After that, the second O-ring can be inserted into the O-ring groove from the end opposite to the above and can be closed with a cap.
It is easy to check the position of the ring when assembling it, and it is difficult for the ring to slip or come off and the assembly work becomes easy.

Further, in the rotary damper, the outer cylinder is immovable with respect to the spindle supporting the hook member, and the rotary damper is provided between the inner periphery of the center hole of the inner cylinder and the spindle inserted into the center hole. Alternatively, the resistance means may be interposed.

According to this structure, in addition to the viscous substance filled in the rotary damper, the resistance means also contributes to braking, so that a higher braking force can be obtained.

Furthermore, fitting means may be provided between the inner circumference of the cap and the outer circumference of the inner wall of the inner cylinder.
According to this structure, when the second O-ring is inserted into the O-ring groove provided on the inner circumference of the opening-side end of the gap between the inner wall of the outer cylinder and the inner wall of the inner cylinder, and the second O-ring is closed by the cap, the cap is closed. The cap is fitted to the inner cylinder by the fitting means provided between the inner circumference and the outer circumference of the inner cylinder. As a result, even if the force of pulling out the inner cylinder from the outer cylinder is applied, the cap fitted to the inner cylinder prevents the inner cylinder from coming off, and the assembled state of the rotary damper can be maintained.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the drawings. [Structure and Operation of Hook Device] FIGS. 1 to 5 are views showing the structure of the hook device according to the present embodiment. As shown in the exploded perspective view of FIG.
00, hook member 200, torsion coil spring 300 as a biasing member, heart cam mechanism 40 as a locking means.
0 and a rotary damper 11 are provided.

The main body case 100 is made of a box-shaped resin molded product having an open front surface, and the inside thereof forms a hook storage space 101. Bearing parts 102 having bearing holes 102a are formed in the lower left and right side walls of the main body case 100, and the support shaft 10 is attached to the bearing parts 102 as will be described later.
3 is inserted and fixed. Further, on the inner surface of the side wall of the main body case 100, the guide groove 1 extends from the opening on the front surface to the bearing portion 102.
04 is formed.

Further, a torsion spring (not shown), which is a component of the heart cam mechanism 400, is incorporated in the lower part of one side wall in a state of being covered by the cap member 401. Although not shown, the tip of the torsion spring projects into the hook storage space 101 from the inner surface of the side wall.

An engagement piece 110 is formed so as to extend from the inner surface of the rear wall of the main body case 100, and a damper engagement portion 111, which is a groove, is formed at the tip of the engagement piece 110. There is. An engagement projection 34 (main body engagement portion) of the rotary damper 11 engages with the damper engagement portion 111, as described later. Here, the damper engaging portion 111 is the bearing portion 10.
It is formed at a position on the inner side of the support shaft 103, which is inserted and fixed in the second shaft, facing the center line.

The outer surfaces of both side walls of the main body case 100 are provided with fastening holes 105a for mounting in a passenger compartment of an automobile or the like.
Are formed, and the projecting portions 105 are attached to the interior of the automobile by a fastener such as a screw.

The hook member 200 is also a resin molded product, which has a hook 201 in the shape of a hook at its tip and flanges 202 extending from both sides of the base. The flange portion 202 has a bearing hole 203a through which the support shaft 103 is inserted.
The bearing portion 203 having the is formed. These bearing parts 2
03 is formed by protruding on the outer surface of the flange portion 202, and the protruding portion is simply inserted into the guide groove 104 formed on the inner surface of the side wall of the case main body 100, and the bearing hole 2 is formed.
03a is arranged coaxially with the bearing hole 102a of the case body 100.

The protruding portion of the one bearing 203 also serves as a spring mounting portion for externally fitting and supporting the torsion coil spring 300, and the central hole portion of the torsion coil spring 300 is externally fitted therein. One end of the torsion coil spring 300 has a guide groove 104 formed on the inner surface of one side wall of the case body 100.
Of the hook member 200, and the other end of the hook member 200 is incorporated in a hooking portion 204 projecting from the outer surface of the flange portion 202. As a result, the biasing force of the torsion coil spring 300 acts on the hook member 200, and the hook member 200 is constantly biased in the opening direction.

One flange portion 20 of the hook member 200
On the inner surface of 2, there is formed a damper engaging portion 210 consisting of a concave line extending linearly from the edge. This damper engaging portion 2
10 includes an engaging projection 2 of the rotary damper 11 as described later.
4 (hook engaging portion) engages.

The other flange portion 20 of the hook member 200
On the outer surface of 2, a heart cam 410 forming the heart cam mechanism 400 is formed. This heart cam 410 is
As described above, it engages with a torsion spring (not shown) protruding from the inner surface of one side wall of the main body case 100. The heart cam mechanism 400 including the heart cam 410 and a torsion spring (not shown) holds the housed state of the hook member 200 pushed into the main body case 100, and holds the hook member 200 when the housed state hook member 200 is further pushed. Release the state and twist the coil spring 30
It has a function of allowing the hook member 200 to be rotated in the opening direction by a biasing force of zero. The heart cam mechanism 4
Since the general structure and function of 00 are already known, detailed description thereof will be omitted (for example, refer to JP-A-4-154453).

The rotary damper 11 includes an inner cylinder 12 and an outer cylinder 1.
3, the inner cylinder 12 and the outer cylinder 13 are relatively rotatable with viscous resistance. And
An engagement protrusion 24 (hook engagement portion) is formed on one end surface of the inner cylinder 12, and a rib-shaped engagement protrusion 34 extending along the axial direction is formed on the peripheral surface of the outer cylinder 13. (Main body engaging part)
Is formed. Of these, the engagement protrusion 24 formed on the inner cylinder 12 is the damper engagement portion 2 formed on the inner surface of the one flange portion 202 of the hook member 200 as described above.
10 is inserted and engaged. By this engagement state,
The inner cylinder 12 rotates together with the hook member 200. Further, the engagement protrusion 34 formed on the outer cylinder 13 engages with the damper engagement portion 111 formed at the tip end portion of the engagement piece 110 extending from the inner surface of the rear wall of the main body case 100. Due to this engaged state, the outer cylinder 13 is integrated with the main body case 100 and free rotation is restricted. The detailed structure of the rotary damper 11 will be described later.

Next, a method of assembling the hook device having the above-mentioned structure will be described. First, as shown in FIG. 2, one flange portion 202 of the hook member 200.
The damper engagement portion 210 formed on the inner surface of the rotary damper 1
The engaging projection 24 formed on the inner cylinder 12 of No. 1 is inserted and engaged.

Subsequently, each bearing portion 20 of the hook member 200
3 is fitted into each guide groove 104 of the main body case. At this time, the engagement protrusion 34 formed on the outer cylinder 13 of the rotary damper 11 is orientated in the fitting direction into the main body case 100 (see FIG. 1), and one bearing formed on the hook member 200 is further arranged. The torsion coil spring 300 is externally fitted to the protruding portion of the portion 203, and the torsion coil spring 30
The other end of 0 is hooked on a hooking portion 204 formed by projecting from the flange portion 202 of the hook member 200.

As a result, the bearing portions 203 of the hook member 200 are fitted into the guide grooves 104 of the main body case 100, and at the same time, the engagement protrusions 34 of the rotary damper 11 engage the damper engagement portions 111 of the main body case 100. To meet. Further, the torsion coil spring 300 is housed in the guide groove 104 of the main body case and abuts on the peripheral surface thereof. Further, the main body case 100
Torsion spring (not shown) protruding from the inner surface of the side wall of the
Engages with the heart cam 410 formed on the flange portion 202 of the hook member 200.

From this state, the support shaft 103 is inserted through the bearing hole 102a of the main body case 100, the bearing hole 203a of the hook member 200, and the insertion hole 23 formed in the central portion of the damper member 11 to fix the hook device. Assembly is complete.

The hook device assembled in this way is
As shown in FIGS. 3 and 4, the hook 201 is housed in the hook housing space 101 of the main body case 100 (housed state), and as shown in FIG. 5, the hook 201 is pulled out from the hook housing space 101 to be exposed. It is possible to arbitrarily form the opened state (used state) by rotating the hook member 200. Moreover, when the hook member 200 is rotated, a sudden rotation of the hook member 200 is suppressed by the braking force of the rotary damper 11, so that the rotation in the direction of exposing the hook storage space 101 is slow, and a high-class feeling is obtained. A certain operation is performed, and a comfortable operation feeling can be obtained without generating a large hitting sound due to a collision with the main body case 100.

In the structure described above, the damper engaging portion 210 formed on the inner surface of the one flange portion 202 of the hook member 200 is formed as a concave line, and is engaged with the inner cylinder 12 of the rotary damper 11. Although the hook engaging portion is formed by the protrusion 24, the damper engaging portion 210 may be formed by a protrusion and the hook engaging portion of the inner cylinder 12 may be formed by a concave line. Similarly, the damper engagement portion 111 formed on the main body case 100 may be formed so as to project, and the main cylinder engagement portion may be formed on the outer cylinder 13 of the rotary damper 11 by a recess.

[Structure and Operation of Rotary Damper] Next, the structure of the rotary damper 11 will be described in detail with reference to FIGS. 6 to 9. 6 is an exploded perspective view of the main rotary damper, FIG. 7 shows an inner cylinder of the main rotary damper, (a) is a sectional view taken along the line AA ′ of FIG. 6, and (b) is FIG. Sectional drawing which followed the BB 'arrow line, FIG. 8 shows the outer cylinder of this rotary damper, (a).
6 is a sectional view taken along the line CC ′ in FIG. 6, and FIG.
Is a sectional view taken along the line D-D 'of FIG. 9, and FIG. 9 is a vertical sectional view of the present rotary damper.

As shown in FIG. 6, the main rotary damper 11 is
It is composed of an inner cylinder 12, an outer cylinder 13, a cap 14, a first O-ring 15, and a second O-ring 16.

As shown in FIG. 6 and FIG. 7, the inner cylinder 12 as a whole forms a cylindrical body having an insertion hole 23 in the center, and a cylindrical space 27 is formed in the wall of this cylindrical body. The outer wall 21 and the inner wall 22 have a double cylindrical structure. One end of the cylindrical space 27 is closed by a closing portion 28 formed by integrating the outer wall 21 and the inner wall 22. On the opening end side of the cylindrical space 27 of the inner cylinder 12, the inner wall 22 extends longer than the outer wall 21 in the axial direction, and a cap groove 25 is provided on the outer periphery of the tip end portion thereof. Further, an air vent hole 26 communicating with the cylindrical space 27 of the inner cylinder 12 is provided on the outer periphery of the outer wall 21 of the inner cylinder 12. Further, an annular groove 29 for fitting the first O-ring 15 is formed at a predetermined position on the outer circumference of the closed portion 28. Furthermore, the closing part 2
A rib-shaped engaging projection 24 extending in the radial direction is provided on the end surface of the member 8.

As shown in FIG. 6 and FIG. 8, the outer cylinder 13 as a whole has a cylindrical body having a central hole 33, and a cylindrical space 37 is formed in the wall of the cylindrical body, and the outer wall is formed. 31
And an inner wall 32 have a double cylinder structure. One end of the cylindrical space 37 of the outer cylinder 13 is closed by a closing portion 38 formed by integrating the outer wall 31 and the inner wall 32. On the open end side of the cylindrical space 37 of the outer cylinder 13, the outer wall 31 of the outer cylinder 13 is provided.
Extends in the axial direction longer than the inner wall 32 of the outer cylinder 13. In addition, a slit 36 extending along the axial direction from the opening end side of the cylindrical space 37 is formed at a predetermined position in the circumferential direction of the inner wall 32 of the outer cylinder 13, and an axial direction is provided at a predetermined position on the outer circumference of the outer wall 31 of the outer cylinder 13. A rib-shaped engaging projection 34 extending along the is formed. A concave cap groove 35 is formed on the end surface of the closing portion 38, and a concave O-ring groove 39 is also formed on the inner periphery of the cap groove 35. Further, an annular groove 40 is formed on the inner circumference of the cap groove 35.

The cap 14 has an annular shape as a whole, and a collar 30 that fits in an annular groove 40 is formed on the outer periphery of the cap 14.

The material of the inner cylinder 12, the outer cylinder 13 and the cap 14 may be any material as long as it has resistance to a viscous substance which will be described later and is easily molded.
For example, when silicone oil is used as the viscous substance, polyacetal, which is an oil-resistant thermoplastic resin, is preferably used. Also, the first O-ring 15
As for the second O-ring 16 as well, a normal O-ring having resistance to a viscous substance can be used.

Next, the procedure for assembling the main rotary damper 11 will be described. First, the first O-ring 15 is fitted into the annular groove 29 formed on the outer periphery of the closed portion 28 of the inner cylinder 12.
In addition, the cylindrical space 37 of the outer cylinder 13 is filled with a viscous substance.

As the viscous substance, a substance having a viscosity suitable for the situation where the rotary damper 11 is used can be selected, but it is possible to use a substance such as silicone oil which has a small variation in viscosity with temperature. preferable.

When the viscous substance is filled, the outer wall 21 of the inner cylinder 12 is placed in the cylindrical space 37 of the outer cylinder 13, and the outer cylinder 13 is filled.
The inner cylinder 12 is inserted into the outer cylinder 13 so that the inner wall 32 of the inner cylinder 32 is disposed in the cylindrical space 27 of the inner cylinder 12. At that time, the inner cylinder 1
The air pushed by the liquid surface of the viscous substance that rises from the closed end side to the open end side of the tubular space 37 of the outer cylinder 13 as the outer wall 21 of the second cylinder is inserted into the outer wall 21 and the outer cylinder 13 of the inner cylinder 12. The third gap 43 formed between the outer wall 31 and the inner cylinder 12
The second gap 42 formed between the outer wall 21 of the outer cylinder 13 and the inner wall 32 of the outer cylinder 13 flows into the second gap 42. After that, it can escape to the outside through the first gap 41. Further, the air flowing into the third gap 43 can be released to the outside through the air vent hole 26, the closed end of the cylindrical space 37 of the outer cylinder 13 and the first gap 41.

After inserting the inner cylinder 12 into the outer cylinder 13, next,
The second O-ring 16 is provided on the outer circumference of the tip portion of the inner wall 22 of the inner cylinder 12.
And then push it to a position where it reaches the O-ring groove 39 of the outer cylinder 13. Then, the cap 14 is pushed into the annular groove 40 of the outer cylinder 13, and the collar 30 of the cap 14 is fitted into the annular groove 40. At this time, the tip of the inner wall 22 of the inner cylinder 12 is inserted into the center hole of the cap 14.

As described above, when the inner cylinder 12 is inserted into the outer cylinder 13, the first O fitted into the annular groove 29 of the inner cylinder 12 is inserted.
After inserting the inner cylinder 12 into the outer cylinder 13 with the ring 15 interposed, the second O-ring 16 can be mounted from the end surface side of the inner cylinder 12, so that the O-rings 15 and 16 can be mounted easily and securely. It has good workability.

As shown in FIG. 9, the main rotary damper 11 thus obtained is located between the inner wall 22 of the inner cylinder 12 and the inner wall 32 of the outer cylinder 13 in the radial direction outward from the axial center. 41, the second gap 42 between the outer wall 21 of the inner cylinder 12 and the inner wall 32 of the outer cylinder 13, the outer wall 21 of the inner cylinder 12 and the outer cylinder 1
The third gap 43 between the outer wall 31 and the third gap 43 has a triple gap.

Further, the opening end of the first gap 41 has a second O
It is closed by the ring 16, the opening end of the third gap 43 is closed by the first O-ring 15, and the first gap 41 is closed.
And the viscous substance is filled in a continuous void including the second gap 42 and the third gap 43. The first gap 41 and the second gap 42 communicate with each other on the closed end side of the tubular space 27 of the inner cylinder 12 and also through the slit 36, and also with the second gap 42 and the second gap 42. The third gap 43 communicates with the closed space side of the cylindrical space 37 of the outer cylinder 13 and also communicates with the air vent hole 26, so that the flow path of the viscous substance is ensured and the viscous substance flows through the gaps. It can fill up every corner.

A resistance means such as an elastomer layer may be provided between the inner circumference of the insertion hole 23 of the rotary damper 11 and the outer circumference of the rotary support shaft 53a. In addition, since the resistance also contributes to braking, a higher braking force can be obtained.

FIG. 10 shows another structural example of the rotary damper according to the present invention. The rotary damper 11a has basically the same configuration as that shown in FIGS. 6 to 9,
The cap 14 has a different fitting structure. That is, in this rotary damper 11a, the annular protrusion 45 is formed on the inner periphery of the cap 14, and the annular groove 46 is formed on the outer periphery of the tip end portion of the inner wall 22 of the inner cylinder 12. Further, a corner portion 47 located forward of the outer circumference of the cap 14 in the insertion direction is chamfered in an R shape.

Therefore, the second O-ring is formed in the O-ring groove 39.
After inserting the ring 16, insert the cap 14 into the cap groove 3
When inserted in 5, the annular projection 45 of the cap 14 fits into the annular groove 46 of the inner wall 22 of the inner cylinder 12, and the cap 14 is fixed to the inner cylinder 12. Therefore, the inner cylinder 12
The cap 14 engages with the outer cylinder 13 even if the inner cylinder 12 is pulled out from the outer cylinder 13, the inner cylinder 12 is not accidentally pulled out, and the inner cylinder 12 and the outer cylinder 13 can be reliably assembled. it can.

When the cap 14 is inserted into the cap groove 35, the chamfered corner portion 47 of the outer periphery of the cap 14 is inserted.
This facilitates insertion of the cap 14. The chamfered shape of the corner portion 47 is not limited to the R shape, but may be a tapered shape.

It should be noted that an annular groove may be provided on the inner circumference of the cap 14 and an annular projection may be provided on the outer circumference of the tip end portion of the inner wall 22 of the inner cylinder 12 so as to fit both.

[0049]

As described above, according to the hook device of the present invention, since the hook member can be rotated while being braked by the rotary damper, the hook device can be slowly rotated in the direction in which the hook member is exposed. The operation has a high-class feeling, and even when the operation position is restrained, a large hitting sound is not generated due to a collision with the main body case, and a comfortable operation feeling can be obtained.

Further, since the rotary damper can be miniaturized by combining the inner cylinder and the outer cylinder, it can be housed between the flange portions formed on the hook member, and the rotary damper can be projected to the outside. Also, there is no need to upsize the entire hook device.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a hook device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a method of incorporating the rotary damper into the hook member of the hook device.

FIG. 3 is a perspective view showing a stored state of the hook device.

FIG. 4 is a side sectional view showing the housed state of the hook device.

FIG. 5 is a side sectional view showing a usage state of the hook device.

FIG. 6 is an exploded perspective view showing a structure of a rotary damper used in the hook device.

7 shows an inner cylinder of the rotary damper shown in FIG. 6, (a) is a cross-sectional view taken along the line AA 'in FIG. 6, and (b) is a line taken along the line BB' in FIG. It is sectional drawing along.

8 shows an outer cylinder of the rotary damper shown in FIG. 6, (a) is a cross-sectional view taken along the line CC 'of FIG. 6, and (b) is a line DD' of FIG. It is sectional drawing along.

FIG. 9 is a vertical cross-sectional view of the rotary damper.

FIG. 10 is a cross-sectional view showing another configuration of the rotary damper.

[Explanation of symbols]

11: Rotation damper 12: Inner cylinder 13: Outer cylinder 14: Cap 15: First O-ring 16: Second O-ring 21: Outer wall of inner cylinder 22: Inner wall of inner cylinder 23: Insertion hole 24: Engagement protrusion (hook engagement part) 27: Cylindrical space of inner cylinder 31: Outer wall of outer cylinder 32: Inner wall of outer cylinder 34: Engagement protrusion (main body engagement part) 37: Cylindrical space of outer cylinder 39: O-ring groove 41: First gap 42: Second gap 43: Third gap 45: annular protrusion 46: annular groove 100: Body case 101: Hook storage space 102: Bearing part 102a: Bearing hole 103: spindle 104: guide groove 105: Overhang part 105a: Fastening hole 110: Engagement piece 111: Damper engaging part 200: Hook member 201: Hook 202: Flange part 203: Bearing part 203a: Bearing hole 204: Hook 210: Damper engaging part 300: Coil spring (biasing member) 400: Heart cam mechanism (locking means) 401: Cap member 410: Heart cam

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Claims (2)

[Claims] 1. A box-shaped main body case having an opening on the front side and having a hook accommodating space therein, and flange portions having bearings respectively extending from both sides of the base portion, and supported by the side wall of the main body case through the respective bearings. A hook member that is rotatably supported by the main body case by a support shaft, and that is rotatable around the support shaft so that the hook member can be retracted into and retracted from the hook storage space of the main body case; An urging member for urging, and a locking means for holding the housed state of the hook member in the hook housing space against the urging force of the urging member and releasing the housed state from the housed state by a pushing operation. And an outer cylinder having a main body engaging portion on the outer periphery, and an inner cylinder having a hook engaging portion on the side and fitted inside the outer cylinder,
A rotary damper in which the outer cylinder and the inner cylinder are relatively rotatable while having resistance, and the rotary damper is arranged between the flange portions formed on the hook member and on the outer periphery of the support shaft. Further, the hook engaging portion formed on the inner cylinder is engaged with the damper engaging portion formed on at least one flange portion of the hook member, and the damper engaging portion formed on the inner wall of the main body case is provided. The hook device is incorporated in a state in which a main body engagement portion formed on the outer cylinder is engaged. 2. The hook device according to claim 1, wherein in the rotary damper, the outer cylinder has a cylindrical space inside a cylindrical wall, and one end of the space is closed. The inner cylinder basically has a similar shape to the outer cylinder,
The outer wall of the inner cylinder enters the tubular space of the outer cylinder, the inner wall of the outer cylinder enters the tubular space of the inner cylinder, and the outer wall of the outer cylinder and the inner wall An O-ring is interposed between the opening-side end of the gap between the outer wall of the cylinder and the opening-side end of the gap between the inner wall of the outer cylinder and the inner wall of the inner cylinder, and the O-ring is sealed by these O-rings. A hook is characterized in that a gap between the inner cylinder and the outer cylinder is filled with a viscous substance, and a center hole of the inner cylinder forms an insertion hole of a support shaft that pivotally supports the hook member. apparatus.