JP6168954B2 - Elastic material interposed structure in vehicles - Google Patents

Description

  According to the present invention, an elastic material is interposed between a part of a vehicle body such as a suspension arm and another part of the vehicle body such as a skeleton member of the vehicle body, and vibrations and impacts between the part of the vehicle body and the other part are caused by this elastic material. The present invention relates to an elastic material intervening structure in a vehicle that can suppress transmission of force.

  Conventionally, the elastic material intervening structure in the vehicle is disclosed in Patent Document 1 below. According to this publication, the elastic material intervening structure in the vehicle includes a cylindrical support connected to a suspension arm for vehicle suspension that is a part of the vehicle body, and an outer cylinder press-fitted into the cylindrical support. An inner cylinder that is connected to a skeleton member of the vehicle body, which is another part of the vehicle body, via a bracket and is fitted in the outer cylinder so as to be relatively movable in the outer cylinder, and the outer and inner And an elastic material provided in the space so as to fill the space between the cylinders.

  Here, as described above, the elastic material is provided in this space so as to fill the space between the outer and inner cylinders. In this case, usually, the elastic material is the inner peripheral surface of the outer cylinder and the inner cylinder. Thus, the outer and inner cylinders and the elastic body are integrated with each other. And the attachment of the combination body to the said cylindrical support body is achieved by press-fitting the outer cylinder body of this combination body into the said cylindrical support body, and fitting the said combination body into this cylindrical support body. The

  When the vehicle travels, the frame member of the vehicle body normally tries to transmit vibration and impact force from the travel surface via the wheels and the suspension arm. In this case, the vibration and impact force are alleviated by the elastic material repeating elastic deformation. Thereby, the maneuverability of the vehicle and the ride comfort on the vehicle are maintained well.

Japanese Patent Laid-Open No. 11-208229

  By the way, when there are many opportunities for the vehicle to travel on a traveling surface with many irregularities such as a gravel road, a large vibration or impact force is repeatedly applied to the elastic material for a longer time. Therefore, the elastic material tends to wear out in a short period due to this repeated load.

  When the elastic material is worn out, it may be replaced with a new one. In this case, first, the combination body including the worn elastic material is removed from the cylindrical support body, and then the new combination body is removed. The replacement is performed by press-fitting an outer cylindrical body into the cylindrical support.

  However, as described above, the attachment of the combined body to the cylindrical support is made firm by press-fitting the outer cylindrical body of the combined body into the cylindrical support. For this reason, the operation of removing the combination from the cylindrical support is usually performed using a set of jigs including a holding jig and a pushing jig as follows.

  That is, of the one end portions in the axial direction of the cylindrical support body and the combined body fitted in the cylindrical support body, the entire contact with only the end surface of the one end portion of the cylindrical support body, The holding jig capable of carrying the load from the end face is set. Then, the other end of the cylindrical support carried by the carrying jig is loaded by the pushing jig on the outer cylindrical body of the combined body, and the one end of the cylindrical support is directed to the side. To push the combination. Then, this combination body is moved relative to the tubular support body toward one end, and is removed from the tubular support body.

  Conventionally, there is a combination body having a flange portion at one end of the combination body. In this case, the combination body fitted in the cylindrical support body has a flange portion in the cylindrical shape. It is supposed to contact the end surface of the one end of the support. In this configuration, when removing the combined body from the cylindrical support body, first, the flange portion is scraped off by a grinder or the like, and then a set of the holding jig and the pushing jig is used. It is supposed that the same operation as described above is performed using the jig.

  Therefore, the conventional work of removing the combination from the cylindrical support tends to be extremely complicated due to the need for the set of jigs described above, and as a result, the elastic material interposed structure in the vehicle The repair work by replacing the material tends to be inconvenient and takes a long time.

  The present invention has been made paying attention to the above-described circumstances, and an object of the present invention is to perform repair work for exchanging an elastic material with a new one such as a new one in an elastic material intervening structure in a vehicle. To be able to do it easily and quickly.

The invention of claim 1 includes a cylindrical support 16 connected to a part of the vehicle body 2, an outer cylinder 17 press-fitted into the cylindrical support 16, and a connection to the other part of the vehicle body 2 and the outside. It is provided in this space so as to fill the space between the outer cylinder 17 and the inner cylinder 20 that is fitted in the outer cylinder 17 so that the inside of the cylinder 17 can be moved relatively. In the elastic material intervening structure in the vehicle provided with the elastic material 21,
A fragile portion 26 is formed in a part of the outer cylindrical body 17, and an external force can be applied to the fragile portion 26 from the outside of the cylindrical support body 16 to a portion of the cylindrical support body 16 facing the fragile portion 26. An elastic material intervening structure in a vehicle is characterized in that a through-hole 27 is formed for the purpose.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

According to the first aspect of the present invention, a cylindrical support connected to a part of the vehicle body, an outer cylinder press-fitted into the cylindrical support, and other parts connected to the vehicle body and relative to each other in the outer cylinder. An elastic material interposed in a vehicle comprising an inner cylinder fitted into the outer cylinder so as to be freely movable, and an elastic material provided in the space so as to fill the space between the outer and inner cylinders In structure
A through hole for forming a fragile portion in a part of the outer cylindrical body and allowing an external force to be applied to the fragile portion from the outside of the cylindrical support body to a portion of the cylindrical support body facing the fragile portion. Is forming.

  For this reason, for example, when an elastic material fitted together with the inner cylindrical body outside the cylindrical support body is worn out, the elastic material is replaced with a new one such as a new one. When trying to repair the structure, first, an external force is applied to the fragile portion of the outer cylindrical body through the through hole. If the fragile portion of the outer cylinder is deformed by this external force to slightly reduce the diameter of the outer cylinder, the outer, inner cylinder and elastic material can be removed from the cylindrical support. . Next, when an additional elastic material is fitted together with the inner cylindrical body on the outer side of the cylindrical support body, the replacement work of the elastic material on the cylindrical support body is completed.

  Here, as described above, when an external force is applied to the fragile portion of the outer cylindrical body through the through-hole, the fragile portion is easily deformed and the diameter of the outer cylindrical body can be immediately reduced. . Therefore, in the elastic material intervening structure in the vehicle, the repair work for exchanging the elastic material with another one such as a new one can be easily and quickly performed.

It is a partial top view of the suspension of a vehicle. FIG. 2 is an enlarged sectional view taken along line II-II in FIG. 1. (A) is a fragmentary perspective view of what was shown in FIG. (B) is a perspective developed view of what is shown in (a). (A) is a figure equivalent to FIG. 2, and is an operation explanatory view. (B) is a perspective developed view of what is shown in (a).

  The present invention relates to an elastic material interposed structure in a vehicle according to the present invention, and has an object of enabling easy and quick repair work for exchanging an elastic material for a new one in the elastic material interposed structure in a vehicle. In order to realize, the form for carrying out the present invention is as follows.

  That is, the elastic material intervening structure in the vehicle includes a cylindrical support connected to a part of the vehicle body, an outer cylindrical body press-fitted into the cylindrical support, and the outer cylinder connected to the other part of the vehicle body. An inner cylinder is fitted into the outer cylinder so as to be relatively movable in the body, and an elastic material is provided in the space so as to fill the space between the outer and inner cylinders.

  A weak part is formed in a part of the outer cylinder. A through-hole for allowing external force to be applied to the fragile portion from the outside of the cylindrical support body is formed in a portion of the cylindrical support member facing the fragile portion.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  1-3, the code | symbol 1 is a vehicle illustrated by the motor vehicle, The arrow Fr has shown the front of the advancing direction of this vehicle 1. In FIG.

  The vehicle 1 includes a vehicle body 2 and a rear wheel 5 suspended from a skeleton member 3 at the rear of the vehicle body 2 via a rear suspension 4. The rear wheel 5 supports the rear portion of the vehicle body 2 on the traveling surface.

  The suspension 4 includes a suspension arm 9 that extends in the front-rear direction of the vehicle body 2, a cross member 10 that couples the left and right suspension arms 9, and a pivot shaft that extends in the width direction of the vehicle body 2. The rear end of the suspension arm 9 swings up and down around the center 11 so that the front end of the suspension arm 9 pivotally supports the skeleton member 3 and the rear end of the suspension arm 9 protrudes from the rear wheel. 5 and an axle 13 for supporting the vehicle.

  The pivotal support 12 corresponds to the elastic material interposed structure in the vehicle 1 according to the present invention, and is located on the pivotal support axis 11 and is a front end portion of the suspension arm 9 which is a part of the vehicle body 2. A cylindrical support 16 coupled to the pivot support axis 11, an outer cylinder 17 press-fitted into the cylindrical support 16 on the pivot support axis 11, and the pivot support axis 11. An inner cylinder 20 which is connected to the skeleton member 3 as a part by a bracket 18 and a fastener 19 and is fitted in the outer cylinder 17 so as to be relatively movable in the outer cylinder 17; The elastic member 21 provided in this space is provided so that the space between the outer and inner cylindrical bodies 17 and 20 may be filled.

  The cylindrical support body 16, the outer cylinder body 17, and the inner cylinder body 20 are all metal cylinders. The cylindrical support 16 is connected to the front end by welding the outer surface of the cylindrical support 16 to the front end of the suspension arm 9. The elastic member 21 is vulcanized and bonded to the inner peripheral surface of the outer cylindrical body 17 and the outer peripheral surface of the inner cylindrical body 20, and is provided in the space between the outer and inner cylindrical bodies 17, 20. , It may be attached to this space by press fitting. For this reason, the outer and inner cylindrical bodies 17 and 20 and the elastic member 21 are combined into an integral body 22. And the attachment of the combination body 22 to the said cylindrical support body 16 is achieved when the outer cylinder body 17 of this combination body 22 is press-fit in the said cylindrical support body 16. As shown in FIG.

  A fragile portion 26 is formed in a portion of the outer cylinder 17 in the circumferential direction. The weakened portion 26 is a cut portion obtained by cutting a part of the outer cylindrical body 17 in the circumferential direction over the entire axial direction. Specifically, when the outer cylindrical body 17 is formed, a flat plate material is bent so as to be cylindrical, and when the end surfaces of the respective edge portions in the circumferential direction of the cylindrical plate material are butted together, both the butted surfaces The interval is equivalent to the cutting part.

  For allowing external force to be applied to the fragile portion 26 from the outside of the cylindrical support body 16 to the portion of the cylindrical support body 16 facing the fragile portion 26 in the thickness direction of the outer cylindrical body 17. A through hole 27 is formed. The through hole 27 is a female screw hole, and a push bolt 28 that can be screwed into the through hole 27 is provided. The through hole 27 may be a screw-free hole. In this case, the shape of the hole may be an oval shape. Further, a plurality of the through holes 27 may be provided in the axial direction of the cylindrical support body 16 along the fragile portion 26.

  In FIG. 4A, for example, when the elastic member 21 of the combined body 22 fitted in the cylindrical support 16 is worn out, the elastic member 21 is replaced with a new one such as a new one. When the pivot support 12 is to be repaired, first, the push bolt 28 is screwed into the through hole 27, and then the push bolt 28 while resisting the elastic force from the elastic member 21. And a pressing force (external force) is applied from the push bolt 28 to the fragile portion 26 of the outer cylindrical body 17. And the weak part 26 of the said outer cylinder 17 is deformed with the pressing force from the said push bolt 28, and the diameter dimension of the said outer cylinder 17 is reduced a little.

  Therefore, as shown in FIG. 4B, the push bolt 28 is twisted so as to be relaxed, and then the combination body 22 is pulled with pliers, so that the combination body 22 is axially moved. As a result, the combination body 22 is easily moved relative to the cylindrical support body 16 in the axial direction by an amount corresponding to the reduced diameter of the outer cylinder body 17. The combination 22 can be easily detached from the support 16.

  Then, as shown in FIG. 3A, if the combination body 22 including the separate elastic member 21 is fitted into the cylindrical support body 16 by press-fitting the outer cylinder body 17, The replacement work of the elastic member 21 with respect to the cylindrical support 16 is finished.

  Here, as described above, when a pressing force is applied from the push bolt 28 to the fragile portion 26 of the outer cylindrical body 17 through the through hole 27, the fragile portion 26 is easily deformed and the outer cylindrical body 17 is deformed. The diameter dimension of this can be reduced immediately. Then, after that, a set of jigs as shown in the prior art is unnecessary, and the combination 22 can be easily detached from the cylindrical support 16. Therefore, the repair work for exchanging the elastic member 21 for another one such as a new one in the pivot support 12 in the vehicle can be performed easily and quickly.

  The structure of the pivot support 12 is such that a front suspension lower arm that suspends a front wheel with respect to the vehicle body 2 and a unit mount for supporting a power unit including an engine for driving the vehicle 1 with respect to the vehicle body 2. Can be applied.

  Further, the fragile portion 26 may be a concave portion (thin wall portion) formed intermittently in the axial direction on the inner peripheral surface and / or the outer peripheral surface of a portion of the outer cylindrical body 17 in the circumferential direction, It may be a groove portion (thin wall portion) continuously formed in the axial direction, and is a cut portion (including a slit) that is partially formed in the middle portion of the axial direction and extends long in the axial direction. May be.

  Further, at least one of the above-described recess, groove, and cut portion partially formed in the middle portion in the axial direction in two portions slightly apart from each other in the circumferential direction of the outer cylindrical body 17. The other portion between the two portions slightly separated from each other in the circumferential direction of the outer cylindrical body 17 may be used as the fragile portion 26.

  Further, the fragile portion 26 is at least one of the concave portion, the groove portion, and the cutting portion that are formed to extend in the circumferential direction in a midway portion of the outer cylindrical body 17 in the axial direction. In this case, the cutting portion is partially formed in the circumferential direction.

  Furthermore, the above-mentioned concave part, groove part, and cutting part partially formed in the circumferential direction are formed in two parts slightly apart from each other in the axial direction of the outer cylindrical body 17, respectively. Another portion between two portions slightly apart from each other in the axial direction may be used as the weakened portion 26.

  Further, when an external force is applied to the fragile portion 26 from the outside of the cylindrical support 16 through the through hole 27, a rod-shaped material is inserted into the through-hole 27, and the hammer's striking force is increased through the rod-shaped material. You may make it give to the weak part 26. FIG.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Skeletal member 4 Suspension 5 Rear wheel 9 Suspension arm 11 Pivot shaft center 12 Pivot support 16 Cylindrical support body 17 Outer cylinder body 20 Inner cylinder body 21 Elastic material 22 Combination body 26 Fragile part 27 Through-hole 28 Push bolt

Claims (1)

A cylindrical support that is connected to a part of the vehicle body, an outer cylinder that is press-fitted into the cylindrical support, and a cylindrical support that is connected to the other part of the vehicle and that is relatively movable in the outer cylinder. In an elastic material intervening structure in a vehicle including an inner cylindrical body fitted in an outer cylindrical body and an elastic material provided in the space so as to fill the space between the outer and inner cylindrical bodies,
A through hole for forming a fragile portion in a part of the outer cylindrical body and allowing an external force to be applied to the fragile portion from the outside of the cylindrical support body to a portion of the cylindrical support body facing the fragile portion. An elastic material intervening structure in a vehicle, characterized in that is formed.

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