Commercial vehicle suspension airbag support

Abstract

The utility model discloses a commercial vehicle suspension air bag support which is characterized in that a pair of fixing feet forming a longitudinal pull rod connecting portion is arranged at the bottom of a support body, and each fixing foot is provided with an end portion extending downwards and a root portion connected to the support body. The middle part between the root part and the end part is bent downwards, and the middle part is of an unequal-diameter structure of which the inner diameter is gradually increased. The purpose of improving the strength of the support is achieved mainly by changing the bending structures of the fixing feet and strengthening the connecting and fixing strength of the longitudinal pull rods.

Description

Technical Field

[0001] The utility model relates to the field of vehicle suspensions, and particularly to a suspension airbag support for commercial vehicles. Background Art

[0002] At present, the front suspension structure of large buses in the domestic market is generally a five-link suspension. This structure has many installation interfaces for airbag supports, complex structures, complex stress conditions, and relatively high requirements for design and processability.

[0003] Figure 1 And Figure 2 Figure 2 Summary of the Utility Model

[0004] In order to achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] A suspension airbag support for commercial vehicles is provided with a pair of fixed feet forming a connection part for a longitudinal tie rod at the bottom of the support body. The fixed feet have end parts extending downward and root parts connected to the support body. The middle part between the root parts and the end parts is bent downward, and the middle part is an unequal-diameter structure with an inner diameter gradually increasing.

[0006] In a preferred embodiment of the utility model, the upper surface of the middle part is a curved arc shape, and the lower surface is an inclined straight line shape. The arc shape and the straight line shape together form the unequal-diameter structure.

[0007] In a preferred embodiment of the utility model, it further includes a pair of connecting columns for fixing the tie rod. The connecting columns are located at the middle position of the support body, and a horizontally protruding rib is arranged between the connecting columns.

[0008] In a preferred embodiment of the utility model, an airbag seat serving as a lower fixing point for the airbag is further arranged at the top of the support body.

[0009] In a preferred embodiment of the utility model, the material of the support body is cast steel.

[0010] The beneficial effect of the utility model lies in:

[0011] The suspension airbag support for commercial vehicles provided by the utility model mainly strengthens the connection and fixing strength of the longitudinal tie rod by changing the bending structure of the fixed feet, so as to achieve the purpose of improving the strength of the support. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0013] Figure 1 It is a schematic diagram of the prior art structure.

[0014] Figure 2 is Figure 1 a partially enlarged schematic view.

[0015] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 4 It is a schematic diagram of the structure of the present invention.

[0017] Figure 5 is Figure 4 a partial enlargement schematic.

[0018] Figure 6 is Figure 4 a top view. Detailed Description of the Embodiments

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. The above description is for the convenience of describing the present invention and simplifies the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0020] The singular forms "a", "the" and "said" used in the specification, unless clearly specified otherwise, all include the plural forms. The terms "comprising", "including" and "containing" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features.

[0021] In the specification, when it is said that an element is "on", "fixed to", "connected to", "joined to", etc. another element, the element may be directly on, fixed to, connected to, joined to or in contact with another element, or there may be an intermediate element.

[0022] Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. However, it should be understood that the present application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all the drawings, the same reference numerals represent the same or functionally identical elements.

[0023] Figure 3 The overall structure of the airbag support is shown, mainly including an airbag seat 10 provided at the top as the lower fixing point of the airbag, a first fixing portion 30 provided at the bottom for fixing the longitudinal tie rod, and a second fixing portion 20 located between the airbag seat 10 and the first fixing portion 30 for fixing the lateral tie rod / stabilizer bar.

[0024] With reference to Figure 4 and Figure 5 , the first fixing portion 30 is composed of a pair of fixing feet 31 that bend downward and extend. The fixing feet 31 include a root portion 34 on one side of the support body 1 and an end portion 32 that extends downward. Specifically, the end portion 32 is bent and extended downward through an intermediate portion 33 located between it and the root portion 34. To solve the problem that the stress concentration at the bending portion is prone to fracture, the lower surface 35 of the intermediate portion 33 is designed to be connected to the end portion 32 through an inclined straight structure, while the upper surface 36 remains an arc-shaped structure. This structure makes the intermediate portion 33 form an unequal-diameter shape with a gradually increasing cross-sectional radius L2 from small to large, which is equivalent to thickening this part. Preferably, the support body 1 is made of cast steel ZG340-550H.

[0025] Referring to Figure 5 , the second fixing portion 20 is also composed of a pair of connecting columns 21 for fixing the tie rod. A rib 22 is provided between the connecting columns 21 to improve the molding quality when the support body 1 is integrally formed by the casting process, and to avoid problems such as shrinkage holes and shrinkage porosity at the thick-wall part due to excessive wall thickness difference between the airbag seat 10 and the bottom structure. The transverse thickness dimension H of the rib 22 can be adjusted according to the size of the lateral tie rod.

Claims

1. A commercial vehicle suspension airbag support, characterized in that: A pair of fixed feet constituting the connection part of the longitudinal pull rod are arranged at the bottom of the support body, and the fixed feet have an end extending downward and a root connected to the support body. The middle part between the root and the end is bent downward, and the middle part is an unequal diameter structure with a gradually increasing inner diameter.

2. A commercial vehicle suspension airbag support as claimed in claim 1, characterized in that: The upper surface of the middle part is in a curved arc shape, and the lower surface is in an inclined straight line shape, and the arc shape and the straight line shape together constitute the unequal diameter structure.

3. A commercial vehicle suspension airbag support as claimed in claim 2, characterized in that: It also includes a pair of connecting columns for fixing the pull rod, wherein the connecting columns are located in the middle of the support body, and a transversely protruding rib is arranged between the connecting columns.

4. A commercial vehicle suspension airbag support as claimed in claim 2 or 3, characterized in that: An airbag seat serving as a lower fixing point of the airbag is also arranged on the top of the support body.

5. A commercial vehicle suspension airbag support as claimed in claim 2 or 3, characterized in that: The support body is made of cast steel.

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