阅读说明：本技术 衬套 (Bushing ) 是由 汤浅薰 牧野仪孝 于 2019-07-08 设计创作，主要内容包括：本发明抑制衬套主体彼此的缠绕。在衬套(10)中,在外锚定器(40)的安装孔(46)的周向上延伸,衬套主体(50)的轴部(52)被覆安装孔(46)的周面,并且衬套主体(50)的第1凸缘部(54)和第2凸缘部(56)分别被覆外锚定器(40)的表面和背面。并且,连结部(60)将衬套主体(50)的周向两侧连结,连结部(60)允许衬套主体(50)的弹性缩径,使第2凸缘部(56)能够通过安装孔(46)。(The invention restrains the bush main bodies from winding each other. In the bushing (10), a shaft portion (52) of a bushing body (50) extends in the circumferential direction of a mounting hole (46) of an outer anchor (40), covers the circumferential surface of the mounting hole (46), and a 1 st flange portion (54) and a 2 nd flange portion (56) of the bushing body (50) cover the front surface and the back surface of the outer anchor (40), respectively. The connecting portion (60) connects both circumferential sides of the bush main body (50), and the connecting portion (60) allows elastic diameter reduction of the bush main body (50) so that the 2 nd flange portion (56) can pass through the mounting hole (46).)

An -type bushing, comprising:

a bush main body extending in a circumferential direction of a mounting hole of a support member of a seatbelt device, provided with a shaft portion covering a circumferential surface of the mounting hole and pairs of flange portions covering a front surface and a rear surface of the support member, respectively, and supporting the support member on a vehicle side by inserting the mounting member into the interior and attaching the mounting member to the vehicle side, and

and a coupling portion that couples both circumferential sides of the bushing main body, allows elastic diameter reduction of the bushing main body, and allows the flange portion to pass through the mounting hole.

2. The bushing of claim 1, wherein,

the joint is fractured to allow elastic reduction of the bushing body.

3. The bushing of claim 1 or 2,

the coupling portion elastically deforms to allow elastic diameter reduction of the bushing body.

4. The bushing of any of claims 1-3, wherein,

the coupling portion couples axial intermediate portions on both circumferential sides of the shaft portion.

Technical Field

The present invention relates to a bush provided with a shaft portion and pair flange portions.

Background

In the sound insulation support device described in patent document 1, the shaft portion of the sound insulation bush covers the circumferential surface of the mounting bolt hole of the anchor metal member, and the pair of flange portions of the sound insulation bush respectively cover the front surface and the back surface of the anchor metal member, and further, a notch is formed in a circumferential portion of the sound insulation bush, and the notch allows elastic diameter reduction of the sound insulation bush, whereby the flange portion of the sound insulation bush is passed through the mounting bolt hole, and the sound insulation bush is assembled to the anchor metal member.

Here, in the soundproof supporting device, other soundproof sleeves pass through the slits of the soundproof sleeves, and thus there is a possibility that the soundproof sleeves are entangled with each other.

Patent document 1: japanese Kokai publication Sho-61-14153

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object thereof is to obtain kinds of bushings capable of suppressing the mutual entanglement of bushing main bodies.

The bush of claim 1 of the present invention includes a bush main body extending in a circumferential direction of a mounting hole of a support member of a seatbelt device, provided with a shaft portion covering a circumferential surface of the mounting hole and pairs of flange portions covering a front surface and a rear surface of the support member, respectively, and supporting the support member on a vehicle side by inserting the mounting member into the interior and mounting the support member on the vehicle side, and a coupling portion coupling both circumferential sides of the bush main body to allow elastic diameter reduction of the bush main body so that the flange portions can pass through the mounting hole.

The bush according to claim 2 of the present invention is the bush according to claim 1, wherein the coupling portion is broken to allow elastic diameter reduction of the bush main body.

The bush according to claim 3 of the present invention is the bush according to claim 1 or 2, wherein the coupling portion is elastically deformed to allow the elastic diameter reduction of the bush body.

The bush according to aspect 4 of the present invention is the bush according to aspects 1 to 3 of the present invention, wherein the coupling portion couples axial intermediate portions on both circumferential sides of the shaft portion.

In the bush according to the 1 st aspect of the present invention, the bush main body extends in the circumferential direction of the attachment hole of the support member of the seatbelt apparatus, the shaft portion of the bush main body covers the circumferential surface of the attachment hole, and the pair flange portions of the bush main body cover the front surface and the rear surface of the support member, respectively.

Here, the coupling portions couple both circumferential sides of the bush main body, and the coupling portions allow elastic diameter reduction of the bush main body, so that the flange portion of the bush main body can pass through the mounting hole. Therefore, the other bushing bodies can be prevented from passing between the circumferential sides of the bushing bodies by the connecting portions, and the bushing bodies can be prevented from being entangled with each other.

In the bush according to the 2 nd aspect of the present invention, the coupling portion is broken to allow elastic diameter reduction of the bush main body. Therefore, the coupling portion can appropriately allow the elastic diameter reduction of the bush main body.

In the bush according to the 3 rd aspect of the present invention, the coupling portion is elastically deformed to allow the elastic diameter reduction of the bush main body. Therefore, the coupling portion can appropriately allow the elastic diameter reduction of the bush main body.

The bushing according to claim 4 of the present invention has a coupling portion that couples axial intermediate portions on both circumferential sides of the shaft portion. Therefore, the coupling portion can effectively allow the elastic diameter reduction of the bush main body.

Drawings

Fig. 1 is a front view of a seat belt device to which a bush according to embodiment 1 of the present invention is applied, as viewed from the front of a vehicle.

Fig. 2 is a perspective view of an outer anchor constituting a seatbelt apparatus according to embodiment 1 of the present invention, as viewed from a side of a vehicle.

Fig. 3A is a plan view of a bush according to embodiment 1 of the present invention.

Fig. 3B is a side view of the bush according to embodiment 1 of the present invention.

Fig. 4 is a side view showing a state in which the bush according to embodiment 1 of the present invention is elastically reduced in diameter.

Fig. 5 is a side view of a bush according to embodiment 2 of the present invention.

Description of the reference numerals

10 … a bush; 40 … outer anchors (support members); 46 … mounting holes; 48 … bolt (mounting member); 50 … a bushing body; 52 … shaft portion; 54 …, 1 st flange portion; 56 … 2 nd flange portion; 60 …; 62 … item 1; 64 … No. 2 link; 72 … cut-out section 1; 74 … cut-out section 2; 90 … a bushing; 92 ….

Detailed Description

(embodiment 1)

The bush 10 according to embodiment 1 of the present invention will be described below with reference to fig. 1 to 4.

Fig. 1 shows a seatbelt device 12 to which a bush 10 according to embodiment 1 of the present invention is applied. IN the drawings, the vehicle front side is indicated by an arrow FR, the vehicle width direction inner side is indicated by an arrow IN, and the vehicle upper side is indicated by an arrow UP.

The seatbelt device 12 is provided in a vehicle seat 18 (e.g., a driver seat or a passenger seat), and the vehicle seat 18 is disposed in a cabin 16 of the vehicle 14 and is configured to allow an occupant to sit thereon. The vehicle seat 18 includes a seat cushion 20 on the vehicle lower side. The seat cushion 20 supports the buttocks and thighs of an occupant (not shown). The vehicle seat 18 is configured to include a seat back 22 on the vehicle rear side. The seat back 22 supports the back of the occupant.

The seatbelt apparatus 12 is provided with a retractor 36, and the retractor 36 is disposed at a lower portion of the center pillar 24 on the vehicle width direction outer side of the vehicle seat 18.

The retractor 36 includes a spool (not shown) that winds the webbing (webbing) 30 in a layer shape from the end side in the longitudinal direction by an urging force, a shoulder anchor 38 (through anchor) is disposed at a position on the vehicle upper side of the shoulder position of the occupant of the center pillar 24, and a support shaft attachment hole 38A is formed through the shoulder anchor 38 on the vehicle upper side.

A support shaft (bolt) 39 is inserted into the support shaft mounting hole 38A, and the support shaft 39 is fixed to the center pillar 24. Thus, the shoulder anchor 38 can rotate about the support shaft 39. The webbing 30 is drawn out from the retractor 36 toward the vehicle upper side, and is folded back toward the vehicle lower side by being inserted into the shoulder anchor 38.

The other end portion in the longitudinal direction of the webbing 30 is locked to the outer anchor 40 made of metal as a support member, the outer anchor 40 is formed in a plate shape, a mounting hole 46 (see fig. 2) is provided in the center portion of the outer anchor 40 on the vehicle lower side, the mounting hole 46 is formed so as to penetrate in the thickness direction of the outer anchor 40, a bolt 48 (see fig. 2) as a mounting member is inserted into the mounting hole 46, and the bolt 48 is fastened to a bracket (not shown) provided on the seat cushion 20, whereby the outer anchor 40 is held between the head portion of the bolt 48 and the bracket, and is rotatably supported by the seat cushion 20.

As shown in fig. 2, a rectangular insertion hole 44 is formed through the vehicle upper side of the outer anchor 40, and the other end portion of the webbing 30 is inserted through the insertion hole 44, the other end portion of the webbing 30 is inserted through the insertion hole 44 and folded back, and is sewn to the vicinity of the other end portion of the webbing 30, whereby the other end portion of the webbing 30 is supported by the outer anchor 40 at the vehicle rear side and vehicle width direction outer side end portion of the seat cushion 20 (see fig. 1).

The mounting hole 46 of the outer anchor 40 is formed in a circular shape so as to penetrate in the thickness direction (vehicle width direction) of the outer anchor 40. A resin bush 10 is fitted to the inner peripheral side of the mounting hole 46. The bush 10 is provided with a bush main body 50. A shaft portion 52 is formed at the radial center side of the bushing main body 50. The shaft portion 52 is a C-shaped bent plate in cross section, extends in the circumferential direction of the mounting hole 46, and the shaft portion 52 covers the circumferential surface of the mounting hole 46.

A 1 st flange portion 54 and a 2 nd flange portion 56, which are flange portions, are formed at both axial end portions of the shaft portion 52, respectively. The 1 st flange portion 54 and the 2 nd flange portion 56 cover the front and back surfaces of the outer anchor 40, respectively.

The 1 st flange portion 54 and the 2 nd flange portion 56 are formed in a C-shaped plate shape coaxial with the shaft portion 52, the 1 st flange portion 54 and the 2 nd flange portion 56 project radially outward from the vehicle width direction outer side end portion of the shaft portion 52, the 1 st flange portion 54 has an outer diameter larger than that of the 2 nd flange portion 56, and a 1 st cutout portion 72 and a 2 nd cutout portion 74 are formed in a circumferential portion of the 1 st flange portion 54 and the 2 nd flange portion 56, respectively.

As shown in fig. 3A and 3B, a coupling portion 60 is formed integrally at between both ends in the circumferential direction of the shaft portion 52, the coupling portion 60 couples both ends in the circumferential direction of the shaft portion 52, in the coupling portion 60, the 1 st coupling portion 62 and the 2 nd coupling portion 64 are coupled at the axial center portion of the shaft portion 52, the 1 st coupling portion 62 extends from the end in the circumferential direction of the shaft portion 52 toward the end side on the 1 st flange portion 54 side, and the 2 nd coupling portion 64 extends from the other end in the circumferential direction of the shaft portion 52 toward the end side on the 2 nd flange portion 56 side.

A coupling portion 70 is formed at a circumferential center portion of the shaft portion 52 of the coupling portion 60. The coupling portion 70 couples the corner of the 1 st tip portion 66 of the 1 st coupling portion 62 on the 2 nd coupling portion 64 side with the corner of the 2 nd coupling portion 64 on the 1 st coupling portion 62 side. When the bushing 10 is assembled to the outer anchor 40, the coupling portion 70 of the coupling portion 60 can be broken, and the bushing main body 50 can be elastically reduced in diameter, whereby the bushing main body 50 can be elastically restored after the 2 nd flange portion 56 (or the 1 st flange portion 54) passes through the mounting hole 46.

The bush 10 suppresses contact between the outer anchor 40 and the bolt 48 and the bracket, and the bush 10 suppresses generation of abnormal noise between the outer anchor 40 and the bolt 48 and the bracket and corrosion caused by dissimilar metals of the outer anchor 40 and the bolt 48 and the bracket. Further, the bush 10 improves the slidability with respect to the outer anchor 40, the bolt 48, and the bracket.

A tongue plate 32 is movably mounted to the webbing 30 between the shoulder anchor 38 and the outer anchor 40. A buckle 34 (inner anchor) is locked to an end portion of the seat cushion 20 on the vehicle rear side and on the vehicle width direction inner side. That is, a mounting hole (not shown) is formed through the buckle 34, and a support shaft (bolt, not shown) is inserted through the mounting hole, and the support shaft is fixed to the seat cushion 20. By engaging the tongue plate 32 with the buckle 34, the webbing 30 is worn by an occupant seated in the vehicle seat 18.

Next, the operation and effect of the present embodiment will be described.

According to the bush 10 of the present embodiment, the coupling portion 60 couples both circumferential sides of the shaft portion 52 before the assembly into the mounting hole 46 of the outer anchor 40. Therefore, for example, in the case where a large number of bushings 10 are housed in a parts feeder or the like, the coupling portion 60 can prevent the other bushings 10 from passing between both circumferential sides of the bushing main body 50, and can prevent the bushings 10 (the bushing main bodies 50) from being entangled with each other. Thus, when the bush 10 is assembled to the mounting hole 46, the operation of releasing the entanglement of the bush 10 becomes unnecessary, and therefore, the assemblability of the bush 10 to the outer anchor 40 can be improved.

Further, according to the bush 10 of the present embodiment, the coupling portions 70 of the coupling portion 60 couple the axial center portions of the shaft portion 52 on both sides in the circumferential direction. Therefore, as shown in fig. 4, even when the diameter reducing force is applied to the hub main body 50 from any portion in the axial direction, the coupling portion 70 is easily broken, and the hub main body 50 is easily reduced in diameter. This can improve the assemblability of the bush 10 to the outer anchor 40. In addition, the coupling portion 70 is partially formed at a narrow portion in the axial direction and the circumferential direction of the shaft portion 52. Therefore, the generation of burrs at the connecting portion 70 after the fracture can be suppressed.

Further, according to the bush 10 of the present embodiment, the coupling portion 60 couples both circumferential sides of the shaft portion 52. Therefore, even if the coupling portion 70 is broken, the bush 10 assembled to the mounting hole 46 of the outer anchor 40 can cover the entire circumferential direction of the mounting hole 46. This can more effectively suppress the occurrence of abnormal noise between the outer anchor 40 and the bolt 48 and the bracket, and can effectively suppress corrosion caused by contact between the outer anchor 40 and the dissimilar metals of the bolt 48 and the bracket. Further, the slidability with respect to the outer anchor 40, the bolt 48, and the bracket can be effectively improved.

(embodiment 2)

Next, a bush 90 according to embodiment 2 of the present invention will be described with reference to fig. 5. The same components as those in embodiment 1 are denoted by the same reference numerals and their description is omitted.

As shown in fig. 5, the coupling portion 92 of the bush 90 according to the present embodiment couples both circumferential ends of the shaft portion 52 in the circumferential direction. The coupling portion 92 is thinner than the shaft portion 52, and is formed to have low rigidity.

Further, according to the bush 90 of the present embodiment, the bush main body 50 can be elastically reduced in diameter by bending and elastically deforming the connection portion 92 and moving the connection portion to the inner peripheral side of the shaft portion 52, so that the 2 nd flange portion 56 (or the 1 st flange portion 54) can pass through the mounting hole 46 of the outer anchor 40. Thus, the present embodiment can also provide the same operation and effect as those of embodiment 1.

Further, the thickness of the coupling portion 92 of the bush 90 according to the present embodiment is smaller than the thickness of the shaft portion 52, but the present invention is not limited to this, and the coupling portion 92 may be formed of a resin different from the resin constituting the bush 90 so as to have a lower rigidity than the shaft portion 52.

The bushes 10 and 90 according to embodiment 1 and embodiment 2 are assembled to the outer anchor 40, but are not limited to this, and may be assembled to the support shaft attachment holes 38A (attachment holes) of the shoulder anchor 38 (support member) and the attachment holes of the buckle 34.