JP3217201U - Lower bracket and air spring mounting structure - Google Patents

Abstract

A lower bracket and an air spring mounting structure for easily mounting an air spring without reducing the air capacity inside the air spring.
A lower bracket (50) on which an air spring fixed to a vehicle body frame is placed. A flat base (51) on which the air spring is placed, and an end on one side of the base (51). The first vertical part 52 extending vertically downward, and extending from the end of the first vertical part 52 so as to be parallel to the cradle part 51, can be attached to the upper surface of the leaf spring. The second mounting portion 53 is a portion extending vertically downward from the first attachment portion 53 and the other end of the cradle 51 and is formed to be longer than the length of the first vertical portion 52. A vertical part 54 and a second attachment part 55 extending from the end of the second vertical part 54 so as to be parallel to the cradle part 51 and attachable to the upper surface of the leaf spring; Prepare.
[Selection] Figure 2

Description

  The present invention relates to a lower bracket and an air spring mounting structure.

  Conventionally, an attachment structure has been proposed in which only the upper part of the air spring is fixed and the lower part is not fixed (see Patent Document 1). The background art of Patent Document 1 describes a mounting structure in which an upper part of a diaphragm type air spring is fixed to a side frame and a lower part of the air spring is seated on a hemispherical base.

  In the above technique, a concave portion having an opening under the role of a piston is disposed below the diaphragm, and a projection having a shape corresponding to this is provided on the pedestal, so that the mounting position can be accurately set without bolt fixing It is possible to set.

JP 2005-21279 A

  However, in the mounting structure described in Patent Document 1, the height of the air chamber in the diaphragm is reduced by the height of the protrusion provided on the pedestal. Therefore, for example, when compared with a cylindrical diaphragm having the same diameter, there is a problem that the air capacity inside the air spring is reduced and it is difficult to improve riding comfort.

  The present invention has been proposed in view of such a situation, and provides a lower bracket and an air spring mounting structure capable of easily mounting an air spring without reducing the air capacity inside the air spring. For the purpose.

  A lower bracket according to the present invention is a lower bracket on which an air spring fixed to a vehicle body frame is placed, and a flat plate-like cradle portion on which the air spring is placed, and an end portion on one side of the cradle portion. A first vertical portion extending vertically downward, and an end of the first vertical portion so as to be parallel to the cradle portion, and can be attached to the upper surface of the leaf spring. 1 and a second vertical part that extends vertically downward from the other end of the cradle part and is longer than the length of the first vertical part. And a second attachment part that extends from the end of the second vertical part so as to be parallel to the cradle part and is attachable to the upper surface of the leaf spring. .

  The air spring mounting structure according to the present invention includes an air spring fixing member for fixing an upper portion of the air spring to a vehicle body frame, a lower bracket according to claim 1 on which the lower portion of the air spring is mounted, and the lower bracket. A lower bracket fixing member for fixing each of the first and second attachment parts to the upper surface of the leaf spring.

  The present invention makes it possible to easily attach the air spring without reducing the air capacity inside the air spring.

It is a disassembled perspective view of an air spring attachment structure. It is (a) front view and (b) side view which show the structure of the lower bracket in an air spring attachment structure.

  Hereinafter, an embodiment of the present invention will be described in detail. In the present embodiment, the structure on the left side of the vehicle will be described. However, since the structure on the right side of the vehicle is configured in the same manner, detailed description thereof is omitted.

FIG. 1 is an exploded perspective view of a vehicle air spring mounting structure 1 according to an embodiment of the present invention.
As shown in FIG. 1, an air spring mounting structure 1 according to an embodiment of the present invention fixes an air spring 40, and includes an air spring fixing member 20, an upper bracket 30, a lower bracket 50, and the like. is there.

  The air spring fixing member 20 is a member that fixes the upper part of the air spring 40 to the vehicle body frame 10. The air spring fixing member 20 is formed by integrally forming a fixing flat portion 21, a side support portion 22, and a vehicle body frame fixing piece 23.

  The fixing flat portion 21 is formed in a plate shape and has a hole portion 21a at the center. The side support portions 22 are plate-like pieces respectively provided on both end sides of the fixing flat portion 21 and are provided in a direction orthogonal to the fixing flat portion 21.

  The vehicle body frame fixing piece 23 is formed integrally with the side support 22 and is bent about 90 degrees with respect to the side support 22. For this reason, the vehicle body frame fixing piece 23 is provided in a direction orthogonal to the fixing flat surface portion 21 and the side surface support portion 22. The body frame fixing piece 23 has two bolt holes 23 a for allowing the bolts 11 to pass therethrough.

  The bolt 11 passes through the bolt hole 23a of the vehicle body frame fixing piece 23, is inserted into the bolt hole 10a formed on the side surface of the vehicle body frame 10, and the bolt hole of the cover plate 24, and is fastened by a nut. Thereby, the body frame fixing piece 23 is fixed to the side surface of the body frame 10. At this time, the direction (normal direction) of the fixing flat portion 21 is a vertical direction. An air spring 40 is fixed to the lower surface of the fixing flat portion 21.

  The air spring 40 includes an upper surface portion 41, an air spring main body 42, and a lower flat portion 44. An air force joint joint 41 a is provided at the center of the upper surface portion 41.

  The upper surface portion 41 is disposed below the fixing flat portion 21 of the air spring fixing member 20. At this time, the air force joint joint portion 41 a is exposed to the upper side of the fixing plane portion 21 through the hole portion 21 a of the fixing plane portion 21.

  A bolt 45 is fastened to the air force joint joint 41a exposed above the fixing flat portion 21. Thereby, the air spring 40 is fixed to the air spring fixing member 20. Further, an air force joint 43 is attached to the air force joint joint portion 41.

An air force (not shown) for introducing air into the air spring main body 42 is attached to the air force joint 43. A lower flat portion 4444 is provided below the air spring main body 42.
The lower flat surface portion 44 is fixed to the cradle portion 51 by bolts that have passed through the holes 51 a of the cradle portion 51 of the lower bracket 50. Thereby, the airbag 40 is fixed to the lower bracket 50.

The lower bracket 50 is fixed on the leaf spring 60.
FIG. 2A is a front view and FIG. 2B is a side view showing the configuration of the lower bracket 50.
The lower bracket 50 includes a cradle part 51, a first vertical part 52, a first attachment part 53, a second vertical part 54, and a second attachment part 55.

The cradle part 51 is a cradle formed in a flat plate shape so that the lower flat part 44 of the air spring 40 can be placed and fixed. A first vertical part 52 and a second vertical part 54 are respectively provided at both ends of the cradle part 51 in the vehicle traveling direction.
The first vertical portion 52 and the second vertical portion 54 are configured so that the cradle 51 is slightly above the leaf spring 60 so that the cradle 51 does not contact the U-shaped bolt 71, the rubber fixing member 72, and the bolt 73. It is a part for lifting.

Specifically, the first extending portion 52 is a portion extending vertically downward (vertical direction) from the end of the cradle portion 51 on the vehicle traveling direction side.
The first attachment part 53 is a part extending from the end of the first vertical part 52 so as to be parallel to the cradle part 51. The first attachment portion 53 has a hole 53 a for allowing the U-bolt 61 to pass through in order to enable attachment to the upper surface of the leaf spring 60.

The second extending portion 54 is a portion extending vertically downward from the end of the cradle 51 opposite to the vehicle traveling direction. The second extending portion 54 is formed to be longer than the length of the first vertical portion 52.
The second attachment part 55 is a part extending from the end of the second vertical part 54 so as to be parallel to the cradle part 51. The second attachment portion 55 has a hole portion 55 a for allowing the U-shaped bolt 61 to pass through in order to enable attachment to the upper surface of the leaf spring 60.

  The U-shaped bolt 61, the fixing member 62 and the nut 63 are for fixing the lower bracket 50 to the upper surface of the leaf spring 60. Specifically, the lower bracket 50 is disposed on the upper surface of the leaf spring 60, and the U-shaped bolt 61 passes through the hole portions 53a and 55a and the hole portion of the fixing member 62 disposed on the lower surface side of the leaf spring 60, Fastened with a nut 63. Thereby, the lower bracket 50 is fixed to the upper surface of the leaf spring 60.

  As described above, in the air spring mounting structure 1 according to the embodiment of the present invention, the air spring 40 is interposed between the body frame 10 and the leaf spring 60 without reducing the volume of air that is put into the air spring 40. It becomes possible to attach.

  The above-described air cushion mounting structure 1 is not limited to a camper, and can also be applied to, for example, a single tire Mazda bongo truck, a Nissan vanette truck, and the like.

1 Air Spring Mounting Structure 10 Body Frame 30 Upper Bracket 40 Air Spring 50 Lower Bracket 60 Leaf Spring 61 U-Shaped Bolt 62 Fixing Member 63 Nut

Claims (2)

A lower bracket on which an air spring fixed to the body frame is placed,
A flat cradle part on which the air spring is placed;
A first vertical portion extending vertically downward from one end of the cradle portion;
A first attachment portion that extends from an end of the first vertical portion so as to be parallel to the cradle portion, and is attachable to an upper surface of a leaf spring;
A second vertical part that is a part extending vertically downward from the other end of the cradle part and is longer than the length of the first vertical part;
A second attachment part extending from an end of the second vertical part so as to be parallel to the cradle part and attachable to an upper surface of the leaf spring;
Lower bracket with An air spring fixing member for fixing the upper part of the air spring to the vehicle body frame;
The lower bracket according to claim 1, on which a lower portion of the air spring is mounted,
A lower bracket fixing member for fixing each of the first and second attachment portions of the lower bracket to the upper surface of the leaf spring;
Air spring mounting structure with

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