JPH0741090U - Body mount - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a lightweight body mount that is easy to attach to a frame structure and has sufficient attachment strength. [Structure] The body mount 10a is provided in a frame structure 70 of a vehicle body, and is a cylindrical portion 74 that constitutes a press-fitted portion.
It is attached to the frame structure 70 by being press-fitted into the mount attaching portion 72 formed of the hollow opening 76 of the tubular portion. The body mount 10a is an inner cylinder body 20 for inserting a fastening member.
An outer cylindrical body 30a that can be inserted into the opening 76, and an inner cylindrical body 2
It is provided between 0 and the outer cylinder body 30a, and connects both cylinder bodies,
Composed of an elastic portion 40 for damping vibration and noise,
The outer tubular body 30 a is made of resin and has a plurality of slits 50 that open in the press-fitting direction and an engaging portion 60 that can engage with the side wall of the tubular portion 74.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a body mount mounted on a frame structure of a vehicle body to reduce vibration and noise.

[0002]

[Prior art]

 One of conventional body mounts is, for example, a cylindrical mount as shown in FIG.

The body mount 100 includes an inner cylindrical body 200, an outer cylindrical body 300 obtained by dividing the cylindrical body into two, and a rubber member provided between the inner cylindrical body 200 and the outer cylindrical body 300. It has an elastic portion 400 that connects the tubular body 200 and the outer tubular body 300.

As shown in FIG. 11, the body mount 100 having the above-described configuration includes a tubular portion 74 that is provided in the frame structure 70 and that constitutes a press-fitted portion, and a hollow portion of the tubular portion 74. It is attached to the frame structure 70 by being press-fitted into the mount attaching portion 72 formed of the opening 76.

Therefore, the outer tubular body 300 is formed of a sheet metal member such as an iron plate having relatively high durability against deformation.

[0006]

[Problems to be solved by the device]

 However, when the body mount having the above-mentioned configuration is used, the following problems occur.

The attachment strength between the body mount 100 and the frame structure 70 utilizes the stress of the elastic portion 400, and is set by the compression allowance and the spring constant of the elastic portion.

When the compression margin of the elastic portion 400 is increased to secure the attachment strength between the body mount 100 and the frame structure 70, the pressure load on the tubular portion 74 of the body mount 100 increases, and the iron plate member is used. If a certain outer cylinder body 300 is deformed and damaged, and if the compression margin is too small, there is a problem in that the mounting strength becomes insufficient and good assembly may not be possible.

On the other hand, in recent years, there has been an increasing demand for weight reduction of vehicle body component parts, and body mounts are no exception. For this reason, various studies are currently being conducted.

The present invention has been made in view of the above problems, and an object thereof is to easily assemble the frame structure, secure sufficient mounting strength, and further reduce the weight. It is to provide a body mount that can

[0011]

[Means for Solving the Problems]

 In order to achieve this object, the invention according to claim 1 is to mount a mount, which is provided in a frame structure of a vehicle body and comprises a tubular portion that constitutes a press-fitted portion and a hollow opening of the tubular portion. A body mount attached to the frame structure by being press-fitted into the portion, wherein the body mount includes an inner cylinder body into which a fastening member is inserted, and an outer cylinder body insertable into the opening. , An elastic portion which is provided between the inner cylindrical body and the outer cylindrical body, connects the both cylindrical bodies, and attenuates vibration and noise. The outer cylindrical body is made of resin, and is press-fitted in a press-fitting direction. It is characterized in that it has a plurality of slits that open to the inside and an engaging portion that can engage with the side wall of the tubular portion.

A second aspect of the present invention is characterized in that the outer cylindrical body is composed of a member obtained by dividing the cylindrical body into a plurality of parts.

A third aspect of the present invention is characterized in that the outer cylindrical body is composed of a cylinder.

The invention according to claim 4 is characterized in that the engaging portion is a claw member that is engageable with the press-fitting side edge of the tubular portion.

The invention according to claim 5 is characterized in that the claw member has a rib formed in the lower portion thereof in the axial direction of the outer cylinder body and plastically deformable when engaged with the press-fitting side edge.

The invention according to claim 6 is characterized in that the claw member has an elastic engaging portion formed in the lower portion thereof by an elastic member integrally formed with the elastic portion.

The invention according to claim 7 is characterized in that the outer cylindrical body is formed of a glass fiber reinforced plastic of a polyamide type.

[0018]

[Action]

 According to the body mount of the present invention, since the outer cylinder is made of resin, the weight of the body mount can be reduced, and at the time of mounting, the elasticity and slipperiness of the resin prevent press fitting into the mounting portion. It's easy. Further, by having a plurality of slits, it is possible to absorb the deformation of the outer cylindrical body in the circumferential direction at the time of press fitting. Furthermore, the fastening strength can be secured by the engagement of the tubular portion, which is the mounting portion, with the engaging portion during mounting.

According to the second aspect of the present invention, the outer cylindrical body is divided, so that the outer cylindrical body can be easily contracted and deformed, and the body mount can be easily press-fitted.

According to the third aspect of the present invention, by forming the outer cylinder body as an integral cylinder, the mechanical strength of the outer cylinder body can be increased. In the case of this configuration, it is desirable that the slits are provided at symmetrical positions in order to absorb the compressive deformation at the time of press-fitting the body mount.

According to the invention of claim 4, the fastening strength of the body mount can be further improved.

According to the invention of claim 5, the press-fitting side edge of the tubular portion that is the mounting portion bites into the rib of the engaging portion, and rattling of the body mount in the press-fitting direction is prevented.

According to the invention of claim 6, the press-fitting side edge of the tubular portion that is the mounting portion bites into the elastic engaging portion of the engaging portion, and rattling of the body mount in the press-fitting direction is prevented. It

According to the invention of claim 7, it is possible to provide a body mount excellent in heat resistance, impact resistance and chemical resistance.

[0025]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First Embodiment FIGS. 1 and 2 are a perspective view and a plan view showing a body mount 10a according to a first embodiment of the present invention.

As will be described in detail later, the body mount 10a is attached to the frame structure by press-fitting the body mount 10a into a mount attachment portion provided in the frame structure of the vehicle body, and further, such as a bolt. It is mounted on the body by fastening members.

As shown in FIG. 1, the body mount 10a is provided between the inner cylindrical body 20, the outer cylindrical body 30a, and the outer peripheral surface of the inner cylindrical body 20 and the inner peripheral surface of the outer cylindrical body 30a. And an elastic portion 40 connecting the two cylinders.

The inner tubular body 20 is a metallic tubular body, and is vulcanized and bonded to the outer tubular body 30 a together with the elastic portion 40.

The inner cylindrical body 20 is for inserting a fastening member such as a bolt when the body mount 10a is attached to the frame structure of the vehicle body and then mounted on the body.

The outer tubular body 30 a is a resin tubular body that encloses the inner tubular body 20 and the elastic portion 40. The type of this resin is not particularly limited, but a fiber-reinforced plastic is preferable from the viewpoint of having sufficient mechanical strength, and for example, it is molded from a polyamide glass fiber reinforced plastic. By forming the outer cylinder with resin in this way, the weight of the body mount 10a can be reduced, and heat resistance, impact resistance, and chemical resistance can be improved by using, for example, polyamide-based glass fiber reinforced plastic. An excellent body mount 10a can be provided.

The outer cylinder body 30a has an outer cylinder body 32a and a flange 34a provided at one end of the outer cylinder body 32a. The other end of the outer cylinder body 32a is narrowed down toward the center of the body mount 10a. The other end of the narrowed outer cylinder body 32a is the press-fitting side when press-fitting into the frame structure.

The outer cylinder main body 32 a has four slits 50 provided at opposing positions at substantially equal intervals in the circumferential direction on the side wall thereof, and an engaging portion 60 provided between the slits 50. .

The slit 50 is opened on the press-fitting side of the outer cylinder body 32a and functions as a deformation allowance in the circumferential direction of the outer cylinder body 30a when the outer cylinder body 30a is compressed when the body mount 10a is attached. .

The engaging portion 60 is a protruding claw member that is integrally formed with the outer cylinder main body 32 at the press-fitting side end of the outer cylinder main body 32a and can take an engaging form such as snap fit.

FIG. 3 (A) is an enlarged front view showing the engaging portion 60, FIG. 3 (B) is a sectional view, and FIG. 3 (C) is a perspective view.

As shown in FIG. 3C, a plurality of ribs 64 having a triangular cross section provided in the axial direction of the outer tubular body 30a are provided at a predetermined interval in the lower portion 62 of the engaging portion 60. In the embodiment, three lines are formed.

The elastic portion 40 is made of rubber in this embodiment, is vulcanized and adhered to the inner peripheral surface of the outer tubular body 30a together with the inner tubular body 20, and connects the outer tubular body 30a and the inner tubular body 20. ing. The elastic portion 40 reduces vibration and noise of the vehicle body due to the elasticity and damping characteristics of rubber.

Next, an example of a mounted state of the body mount 10a will be described.

The body mount 10 a is mounted between the front subframe 80 and the front frame rod 82, and between the front subframe 80 and the frame structure such as the rear brace 84 as shown in FIG. 9, for example.

FIG. 4 is a schematic cross-sectional view showing a state in which the body mount 10 a is attached to the mount attachment portion 72 provided on the subframe structure 70.

The mount mounting portion 72 provided on the sub-frame structure 70 is composed of a tubular portion 74 that constitutes a press-fitted portion and an opening portion 76 that is a hollow portion of the tubular portion 74.

The diameter of the opening portion 76 is set smaller than the diameter of the body mount 10a by the amount of the press-fitting margin, and the body mount 10a is inserted from the opening portion 76 into the cylindrical portion 74 which is the press-fitted portion. When press-fitting, the body mount 10a is compressed, so that the elasticity of the elastic portion 40 causes the outer cylindrical body 30a to contract and deform in the circumferential direction. At this time, the circumferential deformation of the outer cylindrical body 30a is absorbed by the slit 50, so that the outer cylindrical body 30a can be prevented from being deformed and damaged by the pressure load at the time of press fitting.

Press fitting is completed when the proximal side surface of the mount mounting portion 72 and the flange 34 come into contact with each other, but at this time, the engaging portion 60 engages with the press fitting side edge of the tubular portion 74.

As shown in FIG. 4, in the lower portion 62 of the engaging portion 60, the tip of the tubular portion 74 on the press-fitting side bites into the rib 64 of the lower portion 62, and the lower portion 62 is plastically deformed, so that the engagement between the two is stronger. And As a result, rattling between the body mount 10a and the frame structure 70 is absorbed.

After the press-fitting into the tubular portion 74 of the body mount 10a is completed, the stopper plate 86 is brought into contact with the surface of the inner tubular body 20 opposite to the press-fitting direction side and fastened with a fastening member such as a bolt. .

As described above, the body mount 10a having the shape of the first embodiment makes it easy to insert the mount attaching portion 72 into the tubular portion 74 and to secure the engaging portion 60 due to the elasticity and the slipperiness of the resin. By having it, high attachment strength can be secured.

Second Embodiment Next, a second embodiment will be described. The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

5 and 6 are a perspective view and a plan view of the body mount 10b according to the second embodiment.

The structure of the body mount 10b is the same as that of the body mount 10a of the first embodiment except that the outer cylindrical body 30b is composed of half members 31 and 31 that divide the cylindrical body into two equal parts. .

The half-split member 31 has a half-cylinder body 322 obtained by axially dividing the outer-cylinder body 32b into two parts, and a flange 342 provided at an end portion of the half-cylinder body 322 opposite to the press-fitting side. The press-fitting side edge of the half-cylinder body 322 is narrowed down toward the center of the body mount 10b.

The half-cylinder body 322 has a slit 50 at substantially the center of its side wall, and engaging portions 60 on both sides of the slit 50 with the slit 50 interposed therebetween. The shapes of the slit 50 and the engaging portion 60 are similar to those of the first embodiment.

The half members 31, 31 are opposed to each other, the side ends thereof are located at a predetermined distance from each other, and the elastic portions 40 are vulcanized and bonded to the inner peripheral surfaces of the outer cylindrical bodies. Forming 30b. The predetermined distance formed by the half members 31, 31 absorbs the deformation of the outer cylindrical body 30b in the circumferential direction when the body mount 10b is attached to the frame structure 70, similarly to the slit 50.

Other than the above, the shape and mounting state of the body mount 10b are the same as in the first embodiment.

Third Embodiment Next, a third embodiment will be described.

The body mount 10c according to the third embodiment is a modification of the engaging portion 60 of the body mount 10a according to the first embodiment.

FIG. 7 is a schematic cross-sectional view showing the engaging portion 66 of the body mount 10c.

As shown in FIG. 7, the lower portion of the engaging portion 66 is formed of an elastic engaging portion 68 made of rubber and integrally formed with the elastic portion 40, as shown in FIG.

As shown in FIG. 8, when the body mount 10c is attached to the mount attaching portion 72 provided on the frame structure 70, the elastic engaging portion 68 engages with the press-fitting side edge of the tubular portion 74. When they are elastically deformed together, the press-fitting side end of the tubular portion 74 bites into the elastic engaging portion 68, and absorbs rattling between the body mount 10c and the frame structure 70.

Other than the above, the shape and mounting state of the body mount 10c are the same as in the first embodiment. In addition, the engaging portion 66 can be used in the body mount 10b according to the second embodiment.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention.

For example, the shape of the engaging portion is not limited to a claw member such as a snap fit, but may be a protruding member provided on the side surface of the outer tubular body and a receiving member provided on the inner side surface of the tubular portion.

The dividing member of the outer cylindrical body is not limited to two divisions, but may be a plurality of divisions other than two divisions as long as the strength can be maintained.

[0064]

[Effect of device]

 As described above, according to the body mount of the present invention, since the outer cylinder is made of resin, the weight can be reduced.

Also, due to the elasticity and slipperiness of the resin, it is easy to press fit into the mount mounting portion, and the slit in the outer cylinder absorbs the circumferential deformation of the outer cylinder during press fitting, which causes a press fit load. Damage to the outer cylinder is prevented. That is, it is possible to provide a lightweight body mount that can be easily assembled to the frame structure.

Further, by providing the outer cylindrical body with the engaging portion that can be engaged with the side wall of the cylindrical portion of the mount attaching portion, the attachment strength between the body mount and the frame structure is sufficiently secured. Even if the outer cylinder has the engaging portion, the elasticity and the slipperiness of the resin do not hinder the press-fitting into the cylindrical portion.

[Brief description of drawings]

FIG. 1 is a perspective view of a body mount according to a first embodiment.

FIG. 2 is a plan view of the body mount shown in FIG.

3A is a front view showing an engaging portion of the body mount shown in FIG. 1, FIG. 3B is a sectional view, and FIG. 3C is a perspective view.

FIG. 4 is a cross-sectional view showing a mounted state of the body mount according to the first embodiment.

FIG. 5 is a perspective view of a body mount according to a second embodiment.

FIG. 6 is a plan view of the body mount shown in FIG.

FIG. 7 is a side view showing an engaging portion of a body mount according to a third embodiment.

FIG. 8 is a cross-sectional view showing a mounted state of a body mount according to a third embodiment.

FIG. 9 is an explanatory view showing an example of a mounting state of the body mount according to the present invention to the frame structure.

FIG. 10 is a perspective view showing a conventional body mount.

11 is a schematic cross-sectional view of the body mount shown in FIG.

[Explanation of symbols]

 10a, 10b, 10c Body mount 20 Inner cylinder body 30a, 30b Outer cylinder body 31 Half member 32a, 32b Outer cylinder body 322 Half cylinder body 34a, 342 Flange 40 Elastic part 50 Slit 60, 66 Engagement part 64 Rib 68 Elastic Engaging part 70 Frame structure 72 Mount mounting part 74 Cylindrical part 76 Opening part

Claims (7)

[Scope of utility model registration request] 1. The frame structure, which is provided in a frame structure of a vehicle body, and is press-fitted into a mount mounting portion formed of a tubular portion forming a press-fitted portion and a hollow opening of the tubular portion. A body mount to be attached to a body, wherein the body mount includes an inner cylinder body into which a fastening member is inserted, an outer cylinder body insertable into the opening, and the inner cylinder body and the outer cylinder body. The outer cylindrical body is formed of resin and has a plurality of slits that open in the press-fitting direction, and the cylindrical portion. A body mount having an engaging portion engageable with a side wall of the body mount. 2. The body mount according to claim 1, wherein the outer cylindrical body is composed of a member obtained by dividing the cylindrical body into a plurality of parts. 3. The body mount according to claim 1, wherein the outer cylinder body is formed of a cylinder. 4. The body mount according to claim 2, wherein the engagement portion is a claw member that is engageable with a press-fitting side end edge of the tubular portion. 5. The body mount according to claim 4, wherein the claw member is formed in a lower portion of the claw member in an axial direction of the outer cylinder body and is plastically deformable when engaging with the press-fitting side edge of the cylindrical portion. Body mount characterized by having. 6. The body mount according to claim 4, wherein the claw member has an elastic engaging portion formed by an elastic member integrally formed with the elastic portion at a lower portion thereof. . 7. The body mount according to claim 1, wherein the outer cylindrical body is formed of a polyamide-based glass fiber reinforced plastic.