Automobile rear caliper and torsion beam connecting structure

Abstract

The utility model discloses an automobile rear caliper and torsion beam connecting structure which comprises a torsion beam support, a rear caliper support and a connecting plate, the torsion beam support and the rear caliper support are connected through the connecting plate, one end of the connecting plate is connected with the plane of the end portion of the torsion beam support in an attached and welded mode, and the other end of the connecting plate is connected with the torsion beam support. The other end of the connecting plate is provided with a group of connecting mounting holes, and the rear caliper support is fixedly connected through bolts penetrating through the connecting mounting holes. The automobile rear caliper and torsion beam connecting structure is reasonable in design, the first-order bending mode is 553.86 Hz, the second-order torsion mode is larger than 677.61 Hz, and the total requirement is met; the technical period can be effectively shortened, and the CAE analysis frequency is reduced; and meanwhile, compared with similar products, the thickness of the connecting plate is only 10mm, so that the weight and the cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a connecting structure between an automobile rear caliper and a torsion beam. Background Art

[0002] Existing non-independent suspensions generally adopt a torsion beam structure, and the rear brake caliper is connected to the torsion beam through a steel plate with a thickness of about 8 mm (the material is generally Q345B); this structure is very likely to generate MOAN sound due to the modal coupling of the structure, a kind of low-frequency braking noise, and the noise frequency is about 500 Hz.

[0003] Currently, the design does not consider shielding MOAN sound in the mechanism, that is, objective evaluation cannot be carried out in the design stage, and the LINK bench cannot detect the noise in the frequency band below 900 Hz during the noise matching stage of the physical object. Therefore, this noise is often exposed only during the real vehicle verification stage; currently, in the design stage, by means of modal coupling, the frequency range of isolating MOAN noise is required, and the first-order bending mode of the connecting plate with the caliper bracket is: >500 HZ, and the second-order torsional mode is: >650 HZ; however, this method often thickens the connecting plate during design. Generally, the connecting plate needs to be made 15 - 17 mm thick and multiple rounds of optimization and analysis are required to meet the modal requirements. The design efficiency is extremely low, and the weight and cost increase. For example, a connecting structure between a rear brake caliper and a rear torsion beam disclosed in Chinese Patent CN208294999U includes a rear brake caliper, a rear torsion beam, a connecting plate and a rear caliper bracket. The rear brake caliper is connected to the rear caliper bracket, the rear caliper bracket is connected to the connecting plate, and the connecting plate is connected to the rear torsion beam; the arrangement angle between the rear brake caliper and the rear torsion beam is 10° - 35°, and the thickness of the connecting plate is 12 mm - 17 mm. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a connecting structure between an automobile rear caliper and a torsion beam, which can effectively shorten the technical design cycle and reduce the weight.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] The connecting structure between the automobile rear caliper and the torsion beam includes a torsion beam bracket, a rear caliper bracket and a connecting plate. The torsion beam bracket and the rear caliper bracket are connected by the connecting plate. One end of the connecting plate is in surface contact welding connection with the end plane of the torsion beam bracket. A set of connecting and mounting holes are provided at the other end of the connecting plate, and the rear caliper bracket is fixedly connected by bolts passing through the connecting and mounting holes.

[0007] Furthermore:

[0008] A matching positioning structure is provided between one end of the connecting plate and the end of the torsion beam bracket.

[0009] The other two corners of the connecting plate extend relative to the torsion beam bracket.

[0010] The dimension from the end of the rear caliper bracket to the bolt connection position is less than 80 mm.

[0011] The positioning structure is a set of positioning holes.

[0012] The edge of the end connection of the torsion beam bracket is provided with a flanging structure.

[0013] The relative dimension between the mounting hole on the connecting plate and the positioning hole of the torsion beam bracket is less than 45 mm.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The connection structure between the rear caliper and the torsion beam of the vehicle is reasonably designed. The first-order bending mode is 553.86 Hz, and the second-order torsional mode is > 677.61 Hz, meeting the combined requirements; it can effectively shorten the technical cycle and reduce the number of CAE analyses; at the same time, compared with similar products, the thickness of the connecting plate only needs to be 10 mm, reducing the weight and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following briefly describes the content expressed by each drawing in this specification and the marks in the drawings:

[0017] Figure 1 It is a schematic diagram of the connection structure of the utility model.

[0018] In the figure:

[0019] 1. Rear caliper bracket, 2. Connecting plate, 3. Torsion beam bracket, 4. Connecting mounting hole, 5. Caliper bracket dimension, 6 and 7. Relative dimension between the mounting hole on the connecting plate and the positioning hole of the torsion beam bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes in detail the specific embodiments of the utility model with reference to the drawings through the description of the embodiments.

[0021] As Figure 1 shown, the connection structure between the rear caliper and the torsion beam of the vehicle includes a torsion beam bracket 3, a rear caliper bracket 1, and a connecting plate 2. The torsion beam bracket and the rear caliper bracket are connected by the connecting plate.

[0022] One end of the connecting plate 2 is attached and welded to the end plane of the torsion beam bracket. A set of connecting mounting holes 4 are provided at the other end of the connecting plate. A fixing hole is provided at the rear end of the rear caliper bracket. The rear caliper bracket is fixedly connected by bolts passing through the fixing hole and the connecting mounting hole, and the connection is simple.

[0023] A positioning structure adapted to each other is provided between one end of the connecting plate and the end of the torsion beam bracket; preferably, the positioning structure is a set of positioning holes, which can effectively ensure the connection accuracy between the connecting plate and the torsion beam bracket and facilitate welding operations.

[0024] The other two corners of the connecting plate protrude relative to the torsion beam bracket. The set of connecting and mounting holes are two and are respectively arranged at the protruding corners without obstruction, facilitating the connecting operation.

[0025] The edge of the end connection of the torsion beam bracket is provided with a flanging structure, which can be formed by stamping, and the edge has an arc transition, effectively providing structural strength.

[0026] The dimension from the end of the rear caliper bracket to the bolt connection position is caliper bracket dimension 5, and the caliper bracket dimension is less than 80 mm, which can enhance the bending and torsional stiffness of the caliper bracket. The relative dimensions 6 and 7 between the mounting holes on the connecting plate and the positioning holes of the torsion beam bracket are less than 45 mm. The thickness of the connecting plate is 10 mm; through the above design, the overall mode of the connecting plate 2 with the caliper bracket can meet the requirements after CAE analysis. The first-order bending mode: 553.86 Hz, the second-order torsional mode: > 677.61 Hz, meeting the combined requirements.

[0027] The connection form of the present utility model can effectively shorten the technical cycle and reduce the number of CAE analyses; at the same time, compared with similar products, the thickness of the connecting plate only needs to be 10 mm, reducing the weight and cost.

[0028] The above is only a description of the preferred embodiments of the present utility model, and the above technical features can be arbitrarily combined to form multiple embodiment schemes of the present utility model.

[0029] The present utility model has been described exemplarily above in conjunction with the drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A connection structure between a rear caliper and a torsion beam of an automobile, comprising a torsion beam bracket, a rear caliper bracket and a connecting plate, wherein the torsion beam bracket and the rear caliper bracket are connected via the connecting plate, and characterized in that: One end of the connecting plate is connected to the end of the torsion beam bracket by flat fitting welding, and the other end of the connecting plate is provided with a group of connecting and mounting holes, and the rear caliper bracket is fixedly connected by bolts passing through the connecting and mounting holes.

2. The automobile rear caliper and torsion beam connection structure as claimed in claim 1, characterized in that: An adaptive positioning structure is provided between one end of the connecting plate and the end of the torsion beam bracket.

3. The automobile rear caliper and torsion beam connection structure as claimed in claim 1, characterized in that: The two corners at the other end of the connecting plate are extended relative to the torsion beam bracket.

4. The automobile rear caliper and torsion beam connection structure as claimed in claim 1, characterized in that: The dimension from the end of the rear caliper bracket to the bolt connection position is less than 80 mm.

5. The automobile rear caliper and torsion beam connection structure as claimed in claim 2, characterized in that: The positioning structure is a group of positioning holes.

6. The automobile rear caliper and torsion beam connection structure as claimed in claim 5, characterized in that: The edge of the end connection of the torsion beam bracket is provided with a flange structure.

7. The automobile rear caliper and torsion beam connection structure as claimed in claim 5, characterized in that: The relative size of the mounting hole on the connecting plate and the positioning hole of the torsion beam bracket is less than 45 mm.

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