JP3719903B2 - Makeup plug mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a makeup plug mounting structure used for closing a support shaft insertion hole or the like of an armrest that is rotatably supported, for example.
[0002]
[Prior art]
Armrests for automobiles and the like are composed of a metal core material connected to a backrest part and the like, and a flexible material covering the core material. The flexible material is a cushion material such as polyurethane foam and a surface covering the surface. It is made of a workpiece.
[0003]
In order to support the core of the armrest on the backrest, etc., holes for inserting support shafts and nuts may be provided, and cosmetic plugs are used to close these holes and improve the appearance. .
[0004]
Japanese Utility Model Registration No. 2565236 discloses a technique for closing a mounting hole of an armrest fixed to the inside of a vehicle door with a decorative plug.
[0005]
That is, as shown in FIG. 5, the armrest 10 is formed by integrally molding a cushion material 12 made of foamed polyurethane or the like on an insert material 11 and covering the surface of the cushion material 12 with a cover material 13. And in order to fix this armrest 10 to the inner wall 14 of the door of a motor vehicle, the attachment hole 15 is formed in the armrest 10, and the screw | thread 16 is inserted and it fixes to the inner wall 14. FIG.
[0006]
Further, a decorative plug 17 is inserted from the outside of the attachment hole 15 so that the attachment hole 15 cannot be seen from the outside. In this case, the decorative plug 17 includes a flange-shaped head portion 18 and leg portions 19 extending from the head portion 18 in a cylindrical shape. An engagement claw 20 is formed on the outer periphery of the leg portion 19, and the engagement claw 20 is engaged with the end edge of the cover material 13 to prevent it from coming off.
[0007]
[Problems to be solved by the invention]
However, in the makeup plug mounting structure as shown in the above-mentioned utility model registration No. 2565236, when the cover material 13 is made of a soft material such as a cloth that is comfortable to touch, the engagement protruding from the outer periphery of the leg portion 19 is possible. The claw 20 only frictionally engages the cushion material 12 and the cover material 13, and when the pressing force or the like is repeatedly applied from the outside, the decorative plug 17 rattles in the mounting hole 15 and the friction force Weakened and the makeup plug 17 might come off.
[0008]
Accordingly, an object of the present invention is to attach a decorative plug so that when a decorative plug for closing a hole of a flexible material provided in an armrest or the like is inserted into the hole, the decorative plug is firmly engaged and prevented from coming off. To provide a structure.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention is a mounting structure for a decorative plug that closes a hole of a flexible material, the decorative plug including a leg portion that is inserted into the hole of the flexible material, And a support member connected to the flexible member is disposed in the hole, and the support member is provided in alignment with the hole of the flexible member. And a support shaft inserted into the bearing via a bush, and the leg is engaged with the bush.
[0010]
According to the first aspect of the invention, the cosmetic plug can be easily detached by inserting the leg portion of the decorative plug into the hole of the flexible material and engaging the leg portion with the bush of the support member disposed in the hole. It can be firmly fixed so that it will not be damaged.
[0012]
Moreover, while supporting the member covered with the flexible material so that rotation is possible, the hole for inserting the supporting shaft can be closed with a makeup plug, and the appearance can be improved. The support shaft, bush, bearing and the like can be repaired by removing them, and the use of the bush makes it possible to attach the decorative plug without adding new parts.
[0013]
According to a second aspect of the present invention, in the first aspect, an engagement claw is provided on an inner periphery of the leg portion, the bush has a flange, and the leg portion is inserted when the leg portion is inserted into the hole. Is provided on the flange so that the engaging claw engages with the flange.
[0014]
According to the second aspect of the present invention, the engaging claw provided on the inner periphery of the leg portion of the decorative plug is engaged with the flange of the bush, so that the decorative plug is firmly fixed so as not to easily come off. be able to.
[0015]
According to a third aspect of the present invention, in the first aspect, the annular protrusion is provided on the outer periphery of the leg, the bush has an engaging claw on the inner periphery, and the leg is inserted into the hole. The leg plug is inserted into the inner periphery of the bush, and the decorative plug mounting structure is provided in which the annular protrusion engages with the engaging claw.
[0016]
According to the third invention, the annular plug provided on the outer periphery of the leg portion of the decorative plug is engaged with the engaging claw provided on the inner periphery of the bush so that the decorative plug cannot be easily removed. Can be firmly fixed.
[0017]
According to a fourth aspect of the present invention, there is provided the decorative plug mounting structure according to any one of the first to third aspects, wherein at least one of the engaging surfaces of the leg portion and the bush is tapered. .
[0018]
According to the fourth aspect of the present invention, when the leg portion and the bush are engaged, even if there is some dimensional variation between the leg portion and the bush, the leg portion and the bush are in close contact with each other on the tapered surface, Since it engages not only in the axial direction but also in the radial direction, the decorative plug is firmly fixed without any backlash.
[0019]
According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the invention, the head is formed in a flange shape with respect to the leg, and when the leg engages with the bush, A cosmetic plug mounting structure is provided in which the distance between the lower surface of the head and the engagement position is set so that the portion presses the flexible material.
[0020]
According to the fifth aspect, since the head of the makeup plug is mounted with the flexible material pressed, the head of the makeup plug is adjusted by the amount of pressing even if there is a dimensional error of individual parts. The protrusion does not protrude and the appearance is improved, and the engagement surface between the leg and the bush is always in pressure contact by the elastic force of the soft material, so that the play of the decorative plug is prevented.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an embodiment in which the attachment structure for a decorative plug according to the present invention is applied to a support shaft connecting portion of an armrest. 1 is an exploded perspective view of a support shaft connecting portion of the armrest, FIG. 2 is a cross-sectional view of the support shaft connecting portion of the armrest before a decorative plug is inserted, and FIG. 3 is a view of the support shaft connecting portion of the armrest. FIG. 4 is a partial enlarged cross-sectional view showing the engagement state between the engagement claw of the makeup plug and the flange of the bush.
[0022]
1 to 3, reference numeral 21 denotes a metal bracket fixed to a seat back portion or the like, and a support shaft 22 is suspended from the center of the metal bracket. The rotation guide shafts 23 and 23 are vertically suspended.
[0023]
The armrest 30 includes a metal core material (frame) 31, a cushion material 32 made of polyurethane foam or the like integrally molded so as to wrap the core material 31, and a cover made of cloth or the like covering the outer periphery of the cushion material 32. The material 33 is comprised. A hole 34 for inserting the support shaft 22 of the bracket 21 and the like is formed at one end of the armrest 30. Further, a cylindrical bearing 35 positioned at the center of the hole 34 is inserted and fixed in the core 31.
[0024]
A bushing 36 made of synthetic resin is interposed in the inner periphery of the end portion of the bearing 35 on the side where the support shaft 22 is inserted. The bush 36 has a separating portion 37 along the axial direction, and can be reduced in diameter in the radial direction. The bush 36 is elastically reduced in diameter and inserted into the inner periphery of the end portion of the bearing 35, and the support shaft 22 is inserted into the inner periphery of the bush 36.
[0025]
Further, arc-shaped rotation guide grooves 38 and 38 into which the rotation guide shafts 23 and 23 of the bracket 21 are inserted are formed in the core member 31. By inserting the rotation guide shafts 23, 23 into the rotation guide grooves 38, 38, the rotation angle of the armrest 30 is restricted to a predetermined range and is supported in a state rotated in the horizontal direction, the vertical direction, or the like. Is possible.
[0026]
The support shaft 22 penetrates the bearing 35 and protrudes from the end of the bearing 35 opposite to the above. A synthetic resin bush 40 similar to the above is interposed in the inner periphery of the opposite end of the bearing 35. The bush 40 has a separation portion 41 along the axial direction, and can be radially reduced in the same manner as the bush 36. A flange 42 is formed at the outer end of the bush 40. As shown in FIG. 4, the flange 42 has a small diameter portion 42a slightly expanded from the cylindrical portion of the bush 40, and a large diameter portion 42b further expanded from the small diameter portion 42a. A tapered portion 42c that gradually increases in diameter is formed in a portion that reaches the large diameter portion 42b.
[0027]
The bush 40 is inserted into the inner periphery of the end of the bearing 35 from the end opposite to the flange 42, and the tip of the support shaft 22 is inserted through the bush 40. A male screw 22 a is formed at the tip of the support shaft 22, and a nut 47 is screwed to the male screw 22 a via a flat plate washer 45 and a spring washer 46.
[0028]
A makeup plug 50 is provided to close the opening of the armrest 30 located outside the hole 34. The decorative plug 50 includes a head 51 that covers the opening of the hole 34 and a leg 52 that protrudes in a cylindrical shape from the inner surface of the head 51. The leg portion 52 has an outer diameter that is in close contact with the inner periphery of the hole 34, and the head portion 51 extends in a flange shape with respect to the leg portion 52 and has a larger outer diameter than the hole 34. . Slits 53, 53 extending in the axial direction are formed at two opposing positions on the peripheral wall of the cylindrical leg 52, and engaging claws 54, 54 are formed at the ends of the slits 53, 53 away from the head 51. It is formed to protrude to the inner peripheral side.
[0029]
As shown in FIG. 4, the engaging claw 54 has a tapered portion 54 a and a flat portion 54 b, and the tapered portion 54 a hits the flange 42 of the bush 40 when the decorative plug 50 is inserted, so that it can be easily bent inward. The flat portion 54b has a function of facilitating engagement with the flange 42 by forming a corner portion 54c at the boundary portion with the tapered portion 54a. The slits 53 make the engaging claws 54 flexible in the radial direction and help the engaging claws 54 get over the flange 42.
[0030]
Next, the operation of this decorative plug mounting structure will be described.
First, the bracket 21 is fixed to a backrest portion of a seat (not shown) with a bolt or the like. On the other hand, the bush 36 is inserted into the inner periphery of one end of the bearing 35 of the armrest 30, and the support shaft 22 protruding from the bracket 21 is inserted into the bearing 35 through the bush 36. At the same time, the pair of rotation guide shafts 23 and 23 protruding from the bracket 21 are inserted into the rotation guide grooves 38 and 38 of the core member 31.
[0031]
Since the tip end of the support shaft 22 protrudes from the other end of the bearing 35, the bush 40 is attached to the outer periphery of the tip end portion, and the cylindrical portion opposite to the flange 42 of the bush 40 is placed in the gap between the support shaft 22 and the bearing 35. insert. A nut 47 is screwed onto the male screw 22a of the support shaft 22 protruding from the flange 42 of the bush 40 via a flat plate washer 45 and a spring washer 46, and the armrest 30 is fixed to the support shaft 22 so as to be rotatable. . This state is shown in FIG. 2, and a hole 34 is opened outside the armrest 30, and the nut 47, the bush 40, and the like are exposed.
[0032]
Next, when the leg portion 52 of the decorative plug 50 is inserted into the hole 34, the leg portion 52 is inserted so as to cover the outside of the support shaft 22, the bush 40, the nut 47, and the like. And the taper part 54a of the engaging claw 54 of the leg part 52 contacts the flange 42 of the bush 40, and the engaging claw 54 bends to the outer diameter side and gets over the flange 42. As a result, the corner portion 54 c of the engaging claw 54 engages with the tapered portion 42 c of the flange 42, and the decorative plug 50 is prevented from coming off and fixed in the hole 34.
[0033]
At this time, as shown in FIG. 3, the distance A between the lower surface of the head 51 of the makeup plug 50 and the engaging position of the engaging claw 54 and the flange 42 is the cushion material 32 and the front surface of the lower surface of the head 51. The material 33 is set to be pressed. As a result, the engaging claw 54 and the flange 42 are always pressed, and rattling in the axial direction is prevented. Further, even if the distance A varies slightly due to variations in the dimensional accuracy of the respective parts, it is absorbed by the elasticity of the cushion material 32 and the cover material 33, and the head 51 does not lift from the cover material 33. Can be.
[0034]
Further, as shown in FIG. 4, the corner portion 54c of the engaging claw 54 is pressed against and engaged with the tapered portion 42c of the flange 42, so that a pair of engaging claws 54, 54 formed at opposing positions. Even if the gap of the distance fluctuates due to a dimensional error or the like, the taper portion 42c contacts somewhere in the tapered portion 42c, so that it is fixed without backlash in the radial direction.
[0035]
In this way, the decorative plug 50 is inserted into the hole 34 of the flexible member formed by the cushion material 32 and the cover material 33 to improve the appearance, and the cosmetic plug 50 is detached by the engagement between the engagement claw 54 and the flange 42. The decorative plug 50 can be firmly fixed by being stopped. Further, when a trouble occurs in the support shaft 22, the bearing 35, the bushes 36, 40, the nut 47, etc., and the repair is necessary, it can be removed by forcibly pulling the decorative plug 50, and the maintenance becomes easy. .
[0036]
The bush 36 and the bush 40 made of synthetic resin prevent the metal support shaft 22 and the bearing 35 from coming into direct contact with each other, and prevent the generation of noise or the like due to the rotation of the metals. The effect of smoothing the rotation is brought about. Then, the decorative plug is firmly fixed as described above by a relatively simple means of forming the flange 42 on one bush 40 and providing the engaging claw 54 on the decorative plug 50 and without increasing the number of parts. can do.
[0037]
In the above embodiment, the engaging claws 54 are formed at two opposing positions on the peripheral wall of the cylindrical leg 52. May be formed radially at equal angles, whereby the mounting stability of the decorative plug 50 is improved and the effect of preventing detachment is enhanced.
[0038]
FIGS. 6 to 9 show other embodiments in which the attachment structure of the decorative plug according to the present invention is applied to the support shaft connecting portion of the armrest. 6 is an exploded perspective view of the supporting shaft connecting portion of the armrest, FIG. 7 is a sectional view of the decorative plug along the AA arrow line of FIG. 6, and FIG. 8 is along the BB arrow line of FIG. FIG. 9 is a cross-sectional view showing a state where the decorative plug is engaged with the bush. It should be noted that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.
[0039]
In this embodiment, a bush 60 having a shape different from that of the embodiment of FIGS. 1 to 4 is arranged on the inner periphery of the end portion of the bearing 35 on the side where the support shaft 22 is inserted. That is, the bush 60 includes a cylindrical portion 61 inserted between the bearing 35 and the support shaft 22, and a diameter-enlarged cylindrical portion that extends in a flange shape from one end of the cylindrical portion 61 and further expands the diameter. 62. A slit 63 is formed in a pair of opposed portions of the enlarged diameter cylindrical portion 62. The engaging claw has a protrusion extending from one end in the axial direction in the slit 63 in a tongue shape and projecting inward at the tip. 64 is formed.
[0040]
The decorative plug 70 includes a head 71 that covers the opening of the hole 34 and a leg 72 that protrudes in a cylindrical shape from the inner surface of the head 71. The leg portion 72 has an outer diameter that is in close contact with the inner periphery of the hole 34, and the head portion 71 extends in a flange shape with respect to the leg portion 72 and has a larger outer diameter than the hole 34. . In this embodiment, an annular protrusion 73 is formed on the peripheral wall at the tip of the cylindrical leg 72. The surface of the annular projection 73 in the direction of the head 71 forms an engagement surface 73a that engages with the engagement claw 64, and the engagement surface 73a is tapered.
[0041]
In this embodiment, when the leg portion 72 of the decorative plug 70 is inserted into the hole 34 of the armrest 30, the leg portion 72 is inserted into the enlarged cylindrical portion 62 of the bush 60, and the annular protrusion 73 of the leg portion 72 is As shown in FIG. 9, the engaging surface 73a of the annular protrusion 73 is engaged with the engaging claw 64, and the decorative plug 70 is secured and fixed. The
[0042]
At this time, the head 71 of the makeup plug 70 is attached in a state where the cushion material 32 is pressed, so that a force that always pushes the makeup plug 70 outward acts, and the engaging claw 64 of the bush 60 is connected to the leg 72. It is always in pressure contact with the engaging surface 73a of the annular protrusion 73. In addition, since the engagement surface 73a of the annular protrusion 73 is tapered, even if there is some dimensional variation between the leg portion 72 and the bush 60, they are in close contact with each other on the taper surface and are not only in the axial direction. Since the engagement is performed without backlash in the radial direction, the decorative plug 70 is firmly fixed without backlash.
[0043]
In addition, in the said embodiment, although the engaging claw 64 is formed in a pair of location which the surrounding wall of the diameter-expansion cylindrical part 62 of the bush 60 opposes, a shaft is provided in three or more places of the surrounding wall of the diameter-expansion cylindrical part 62. It may be formed at a uniform radial angle from the center, thereby improving the mounting stability of the decorative plug 70 and enhancing the detachment preventing effect.
[0044]
【The invention's effect】
As described above, according to the present invention, the leg portion of the decorative plug is inserted into the hole of the flexible material, and the leg portion is engaged with the bush of the support member disposed in the hole. It can be firmly fixed so that the cosmetic plug that closes the hole of the flexible material is not easily removed.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment in which a mounting structure for a decorative plug according to the present invention is applied to a support shaft connecting portion of an armrest.
FIG. 2 is a cross-sectional view showing a state before inserting a decorative plug of a support shaft connecting portion of an armrest in the same embodiment;
FIG. 3 is a cross-sectional view showing a state in which a decorative plug is inserted in a support shaft coupling portion of an armrest in the same embodiment;
FIG. 4 is a partially enlarged cross-sectional view showing an engaged state between an engaging claw of a decorative plug and a flange of a bush in the same embodiment.
FIG. 5 is a cross-sectional view showing an example of a conventional decorative plug mounting structure.
FIG. 6 is an exploded perspective view showing another embodiment in which the attachment structure of the decorative plug according to the present invention is applied to a support shaft connecting portion of an armrest.
7 is a cross-sectional view of the decorative plug taken along the line AA in FIG. 6;
8 is a cross-sectional view of the bush along the line BB in FIG. 6;
FIG. 9 is a cross-sectional view showing a state in which a decorative plug is engaged with a bush.
[Explanation of symbols]
21 Bracket 22 Support shaft 30 Armrest 31 Core material 32 Cushion material 33 Cover material 34 Hole 35 Bearing 36, 40 Bushing 42 Flange 42c Tapered portion 47 Nut 50 Makeup plug 51 Head 52 Leg portion 53 Slit 54 Claw portion 60 Bush 61 Cylindrical portion 62 Expanded cylindrical portion 64 Engaging claw 70 Cosmetic plug 71 Head 72 Leg 73 Annular projection 73a Engaging surface

Claims (5)

A makeup plug mounting structure for closing a hole of a flexible material, wherein the makeup plug has a leg portion inserted into the hole of the flexible material, and a head portion for closing the hole of the flexible material, A support member connected to the flexible material is disposed in the hole,
The support member has a bearing provided in alignment with the hole of the flexible material, and a support shaft inserted into the bearing via a bush.
A makeup plug mounting structure in which the leg is engaged with the bush.   An engagement claw is provided on the inner periphery of the leg, the bush has a flange, and when the leg is inserted into the hole, the leg is externally inserted into the flange, and the engagement claw The decorative plug mounting structure according to claim 1, wherein the decorative plug mounting structure is engaged with the flange.   An annular protrusion is provided on the outer periphery of the leg, the bush has an engaging claw on the inner periphery, and when the leg is inserted into the hole, the leg is inserted into the inner periphery of the bush, The decorative plug mounting structure according to claim 1, wherein the annular protrusion is engaged with the engaging claw.   The makeup | decoration plug attachment structure as described in any one of Claims 1-3 in which at least one of the engaging surface of the said leg part and the said bush has comprised the taper shape.   The head is formed in a flange shape with respect to the leg, and when the leg engages with the bush, the head lower surface and the engagement position are arranged so that the head presses the flexible material. The makeup | decoration plug attachment structure as described in any one of Claims 1-4 in which the distance is set.

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