Support for connecting pull rod and auxiliary frame applying support

Abstract

The utility model relates to a support for connecting a pull rod and an auxiliary frame applying the support, which comprises a support body formed by plates, the support body is provided with a U-shaped slot for inserting the pull rod, the slot walls on two sides of the slot are respectively provided with a first connecting hole and a second connecting hole for bolts on the pull rod to pass through, and the first connecting hole and the second connecting hole are connected with the support body. Protruding blocks used for clamping deflection gaskets of the pull rod are arranged on the outer surface of the frame body and located on the two sides of each connecting hole in a protruding mode, each protruding block is formed by protruding outwards from the plate body where the protruding block is located, and each deflection gasket can rotate relative to the two corresponding protruding blocks with the straight line where the center axis of the deflection gasket is located as the center in the clamped state. Compared with the prior art, on one hand, the number of parts is reduced, and the production cost is reduced; and on the other hand, welding seams are reduced, the fatigue performance of the support is improved, the risk of welding deformation can be reduced, the assembly quality can be guaranteed, and meanwhile the problems of welding spatter on the bolt assembly face and the like can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of automotive chassis components, and in particular to a bracket for connecting tie rods and a subframe using the bracket. Background Technology

[0002] The subframe is the skeleton of the front and rear axles and an important component of the vehicle chassis. Its main function is to reduce the impact of road vibrations on the vehicle body, improve the connection stiffness of the suspension system, and enhance the comfort and stability of the vehicle during driving. In addition, the subframe can also reduce noise from engine and road vibrations, improving the quietness of the vehicle cabin. For example, the applicant's prior Chinese utility model patents, namely ZL201820011719.9 (authorization announcement number CN207657901U) and ZL201922486128.4 (authorization announcement number CN212267629U), both disclose existing subframe structures.

[0003] Furthermore, one end of the chassis tie rod is connected to the wheel steering knuckle, and the other end is connected to the subframe via a bracket. Specifically, the tie rod is bolted to the bracket, and U-shaped limiting blocks are welded to both sides of the bracket. The bias washers at both ends of the bolt are respectively engaged in the corresponding limiting blocks. This allows adjustment of the tie rod by rotating the bias washers on both sides, thereby adjusting the wheel attitude (i.e., toe angle and camber angle). However, welding additional U-shaped limiting blocks to the bracket increases the manufacturing cost of the bracket (adding a part: limiting blocks) and also increases weld seams. The increased weld seams reduce the fatigue performance of the bracket and also increase welding deformation, thus affecting assembly quality. Summary of the Invention

[0004] The first technical problem to be solved by this utility model is to provide a bracket for connecting a pull rod that can realize the adjustment function of the pull rod, has a simple structure, and has low production cost, in contrast to the existing technology.

[0005] The second technical problem to be solved by this utility model is to provide a bracket for connecting the tie rod that can realize the adjustment function of the tie rod without adding additional welds, in contrast to the prior art.

[0006] The third technical problem to be solved by this utility model is to provide a subframe with the bracket, which is different from the prior art.

[0007] The technical solution adopted by this utility model to solve the first and second technical problems mentioned above is as follows: a bracket for connecting a tie rod, comprising a frame constructed of plate parts, characterized in that the frame has a U-shaped slot for inserting the tie rod, and a first connecting hole and a second connecting hole for bolts on the tie rod to pass through are respectively opened on the two side walls of the slot. Furthermore, on the outer surface of the frame, protrusions for clamping tie rods are respectively provided on both sides of each connecting hole, and each protrusion is formed by protruding outward from the plate part where it is located. In the state of being clamped, each tie rod can rotate relative to the two corresponding protrusions with its own central axis as the center.

[0008] Furthermore, each of the aforementioned protrusions is elongated, and the protrusions on both sides of each connecting hole are symmetrically arranged around the connecting hole. The inner surfaces of the protrusions on both sides of each connecting hole are flat surfaces extending along the straight line of the axis of symmetry and used to clamp the corresponding biasing shims. This allows the protrusions on both sides of each connecting hole to better clamp the corresponding biasing shims, and also allows each biasing shim to rotate better between the corresponding two protrusions, thus ensuring the adjustment effect of the pull rod.

[0009] Furthermore, the cross-section of each protrusion is a right-angled triangle, and one side of the right-angled corner of each protrusion is in contact with the frame, while the other side forms the flat surface. This helps to ensure the reliability of clamping each biasing shim and avoids the biasing shims from coming off or failing to rotate effectively, thus affecting the adjustment effect of the pull rod.

[0010] Furthermore, the outer surface of each of the aforementioned protrusions is rounded. This prevents sharp corners or burrs on the surface of each protrusion from scratching related parts, such as washers and bolts.

[0011] Furthermore, each of the aforementioned connecting holes is an oblong hole, and the aforementioned protrusions are respectively provided on both sides along the length of each connecting hole. In this way, as each bias washer rotates, the bolt shank can move accordingly in each connecting hole, which facilitates the adjustment of the tie rod.

[0012] Furthermore, each of the aforementioned protrusions is formed by stamping outwards from the plate on which it is located. This facilitates the machining and forming of each protrusion on the frame, and avoids adding extra weight to the bracket, thus contributing to the overall lightweighting of the subframe.

[0013] Furthermore, the frame includes a square first plate and a second plate, both arranged vertically. The first plate is a flat plate with a first connecting hole in its center. The second plate is a bent plate, with its horizontal portion welded to the first plate to form a slot. The vertical portion of the bent plate has a second connecting hole in its center, directly opposite the first connecting hole. This welding and fixing of the first and second plates creates a frame structure with the slot, allowing the first and second connecting holes to be located on the side walls of the slot. The protrusions on the outer surfaces of the first and second plates respectively ensure that the protrusions are positioned on both sides of each connecting hole.

[0014] Furthermore, the slots of the frame open downwards, and the upper end of the first plate is flanged outwards along its length, with one end of the flange extending outwards to form a first welding extension edge. One side of the lower end of the first plate extends outwards and is flanged to form a second welding extension edge. Simultaneously, one side of the lower end of the vertical portion of the second plate extends outwards and is flanged to form a third welding extension edge. All welding extension edges are located on the same side of the frame and are used for welding and fixing to the subframe. This allows the bracket to be securely welded and fixed to the corresponding location on the subframe.

[0015] The technical solution adopted to further solve the third technical problem mentioned above is: a subframe, characterized in that it uses the bracket for connecting the tie rod as described above.

[0016] Furthermore, the system includes a left longitudinal beam, a right longitudinal beam, a front crossbeam, and a rear crossbeam. The left and right longitudinal beams extend in the front-rear direction, respectively. The front crossbeam connects the front ends of the left and right longitudinal beams, while the rear crossbeam connects the rear ends of the left and right longitudinal beams. The aforementioned brackets are welded and fixed to the left and right longitudinal beams, thus enabling the brackets to be mounted on the subframe.

[0017] Compared with the prior art, the advantages of this utility model are as follows: the frame is provided with a slot, and the two sides of the slot are respectively provided with a first connecting hole and a second connecting hole, and the outer surface of the frame is provided with protrusions on both sides of each connecting hole. When the pull rod is inserted into the slot, the bolt on the pull rod passes through the first connecting hole and the second connecting hole in sequence, and the bias washers at both ends of the bolt are respectively engaged between the protrusions on both sides of the corresponding connecting hole. When each bias washer is clamped, it can rotate relative to the two corresponding protrusions with its own central axis as the center. In this way, by rotating each bias washer, the pull rod can be adjusted, thereby adjusting the wheel posture.

[0018] Each protrusion is formed by protruding outward from the plate it is located on. Compared with the prior art, each protrusion in this utility model is an integral part of the frame. On the one hand, it reduces the number of parts and lowers the production cost; on the other hand, it reduces the number of welds, which not only improves the fatigue performance of the bracket, but also reduces the risk of welding deformation, which helps to ensure assembly quality, and also avoids problems such as welding spatter on the bolt assembly surface. Attached Figure Description

[0019] Figure 1 This is a partial structural diagram of the subframe in an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 Enlarged view of section A;

[0021] Figure 3 for Figure 1 A structural diagram from another direction;

[0022] Figure 4 This is a schematic diagram of the support structure in an embodiment of the present utility model;

[0023] Figure 5 This is an exploded view of the support structure in an embodiment of this utility model;

[0024] Figure 6 for Figure 5 A structural diagram in another direction. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0027] like Figures 1-6As shown, a subframe includes a left longitudinal beam 1, a right longitudinal beam, a front crossbeam 2, and a rear crossbeam (only parts of the left longitudinal beam 1 and the front crossbeam 2 are shown in the accompanying drawings of this embodiment). The left longitudinal beam 1 and the right longitudinal beam extend in the front-rear direction, and the front crossbeam 2 is connected between the front end of the left longitudinal beam 1 and the front end of the right longitudinal beam. The rear crossbeam is connected between the rear end of the left longitudinal beam 1 and the rear end of the right longitudinal beam. Brackets are welded and fixed to the left longitudinal beam 1 and the right longitudinal beam, respectively.

[0028] like Figures 4-6 As shown, each of the aforementioned brackets in this utility model includes a frame 3 constructed from a plate. Further, the frame 3 has a U-shaped slot 30 for inserting a pull rod 4. The two side walls of the slot 30 are respectively provided with a first connecting hole 32 and a second connecting hole 33 for the bolt 41 on the pull rod 4 to pass through. Furthermore, on the outer surface of the frame 3, protrusions 31 for clamping biasing pads 42 of the pull rod 4 are provided on both sides of each connecting hole. Each protrusion 31 protrudes outward from its respective plate. And when clamped, each biasing pad 42 can rotate relative to its corresponding two protrusions 31 around its own central axis.

[0029] As can be seen from the above, the frame 3 of this utility model is provided with a slot 30. A first connecting hole 32 and a second connecting hole 33 are respectively opened on the two side walls of the slot 30. Protrusions 31 are respectively provided on both sides of each connecting hole on the outer surface of the frame 3. When the pull rod 4 is inserted into the slot 30, the bolt 41 on the pull rod 4 passes through the first connecting hole 32 and the second connecting hole 33 in sequence. The bias washers 42 at both ends of the bolt 41 are respectively engaged between the protrusions 31 on both sides of the corresponding connecting hole. Each bias washer 42, when clamped, can rotate relative to the corresponding two protrusions 31 around its own central axis. Thus, by rotating each bias washer 42, the pull rod 4 can be adjusted, thereby adjusting the wheel's posture.

[0030] In this invention, each protrusion 31 is formed by protruding outward from the plate where it is located. Compared with the prior art, each protrusion 31 in this invention is an integral part of the frame 3. On the one hand, it reduces the number of parts (for example, there is no need to set up a U-shaped block), thus reducing production costs. On the other hand, it reduces welds, which not only improves the fatigue performance of the bracket (the fatigue performance of the welded area is poor), but also reduces the risk of welding deformation, which is conducive to ensuring assembly quality. At the same time, it can also avoid problems such as welding spatter on the assembly surface of the bolt 41.

[0031] Furthermore, each of the aforementioned protrusions 31 is elongated, and the protrusions 31 on both sides of each connecting hole are symmetrically arranged with the connecting hole as the center. The inner surfaces of the protrusions 31 on both sides of each connecting hole are flat surfaces 310 extending along the straight line of the axis of symmetry and used to clamp the corresponding biasing pads 42. On the one hand, this allows the protrusions 31 on both sides of each connecting hole to better clamp the corresponding biasing pads 42; on the other hand, it allows each biasing pad 42 to rotate better between the corresponding two protrusions 31, so as to ensure the adjustment effect of the pull rod 4.

[0032] Preferably, the cross-section of each of the aforementioned protrusions 31 is a right-angled triangle, and one side of the right-angled corner of each protrusion 31 is respectively attached to the frame 3, while the other side forms the aforementioned flat surface 310. This helps to ensure the reliability of clamping each biasing pad 42, and avoids the biasing pad 42 from coming off or being unable to rotate effectively, thus affecting the adjustment effect of the pull rod 4.

[0033] More preferably, the outer surface of each of the above-mentioned protrusions 31 is rounded. This avoids sharp corners or burrs on the surface of each protrusion 31 from scratching related parts, such as the bias washer 42, bolt 41, etc.

[0034] Furthermore, each of the aforementioned connecting holes is an oblong hole, and protrusions 31 are respectively provided on both sides along the length of each connecting hole. In this way, as each biasing washer 42 rotates, the shank of the bolt 41 can move in each connecting hole, which facilitates the adjustment of the pull rod 4.

[0035] In this embodiment, preferably, each of the aforementioned protrusions 31 is formed by stamping outwards from the plate on which it is located. This facilitates the processing and forming of each protrusion 31 on the frame 3, and avoids adding extra weight to the bracket, thus contributing to the overall lightweighting of the subframe.

[0036] Furthermore, in this embodiment, specifically, the frame 3 includes a square first plate 3a and a second plate 3b, both arranged vertically. The first plate 3a is a flat plate with a first connecting hole 32 in its center. The second support plate is a bent plate, and its horizontal portion 3b1 is welded to the first plate 3a, so that the first plate 3a and the second plate 3b form the slot 30. The vertical portion 3b2 of the bent plate has a second connecting hole 33 in its center, directly opposite the first connecting hole 32. By welding and fixing the first plate 3a and the second plate 3b, a frame 3 structure with the aforementioned slot 30 can be constructed, and the first connecting hole 32 and the second connecting hole 33 can be opened on the slot walls on both sides of the slot 30. Furthermore, by protruding the aforementioned protrusions 31 on the outer surfaces of the first plate 3a and the second plate 3b respectively, the protrusions 31 can be set on both sides of each connecting hole.

[0037] Furthermore, preferably, the slot 30 of the frame 3 opens downwards, and the upper end of the first plate 3a is flanged outwards along its length direction, with one end of the flange extending outwards to form a first welding extension edge 341. The lower end of the first plate 3a extends outwards and is flanged to form a second welding extension edge 342. Meanwhile, the lower end of the vertical portion 3b2 of the second plate 3b extends outwards and is flanged to form a third welding extension edge 343. Each welding extension edge is located on the same side of the frame 3 and is used to weld and fix it to each longitudinal beam of the subframe, thereby firmly welding and fixing the bracket to the subframe.

Claims

1. A bracket for connecting a drawbar, comprising a frame (3) constructed from sheet metal, characterized in that, The frame body (3) has a U-shaped slot (30) for inserting the pull rod (4), first and second connecting holes (32, 33) are respectively formed in the two side walls of the slot (30) for the bolts (41) on the pull rod (4) to pass through, and the outer surface of the frame body (3) is provided with a protrusion (31) on each side of the connecting holes for clamping the biasing washer (42) of the pull rod (4), each protrusion (31) is formed by protruding outward from the plate body, and each biasing washer (42) can rotate about the straight line where the central axis thereof is located relative to the corresponding two protrusions (31).

2. The bracket for connecting a tie rod as set forth in claim 1, wherein The protrusions (31) are respectively in the shape of a long strip, and the protrusions (31) on each side of the connecting holes are symmetrically arranged about the connecting hole, and the inner side of each protrusion (31) is a flat surface (310) extending along the straight line where the symmetry axis is located and used for clamping the corresponding biasing washer (42).

3. A bracket for connecting a drawbar as claimed in claim 2, characterised in that The cross section of each protrusion (31) is in the shape of a right triangle, and one side of the right angle of each protrusion (31) is attached to the frame body (3), and the other side forms the flat surface (310).

4. The bracket for connecting a tie rod as set forth in claim 3, wherein The outer surface of each protrusion (31) is smooth.

5. A bracket for connecting a tie rod as claimed in any one of claims 1 to 4, characterised in that, Each connecting hole is a waist-shaped hole, and the protrusions (31) are arranged on both sides of the connecting hole along the length direction thereof.

6. A bracket for connecting a tie rod as claimed in any one of claims 1 to 4, characterised in that, Each protrusion (31) is formed by stamping and protruding outward from the plate body.

7. A bracket for connecting a tie rod as claimed in any one of claims 1 to 4, characterised in that, The frame body (3) includes a square first plate body (3a) and a second plate body (3b), and the first plate body (3a) and the second plate body (3b) are arranged in a vertical manner, wherein the first plate body (3a) is a flat plate, the first plate body (3a) is provided with the first connecting hole (32) in the middle part thereof, the second plate body is a bent plate, the transverse part (3b1) of the bent plate is welded and fixed to the first plate body (3a) to form the slot (30) surrounded by the first plate body (3a) and the second plate body (3b), and the vertical part (3b2) of the bent plate is provided with the second connecting hole (33) in the middle part thereof, and the second connecting hole (33) is opposite to the first connecting hole (32).

8. The bracket for connecting a tie rod as set forth in claim 7, wherein The slot (30) of the frame body (3) is downwardly open, the upper end of the first plate body (3a) is outwardly turned along the length direction thereof, one end of the turned edge of the first plate body (3a) extends outwardly to form a first welded extension edge (341), one side of the lower end of the first plate body (3a) extends outwardly and is turned to form a second welded extension edge (342), and one side of the lower end of the vertical part (3b2) of the second plate body (3b) extends outwardly and is turned to form a third welded extension edge (343), and the welded extension edges are located on the same side of the frame body (3) and are used for welding and fixing with the auxiliary frame.

9. A subframe characterized by, The bracket for connecting the pull rod is applied.

10. The subframe of claim 9, wherein, The invention relates to a vehicle frame comprising a left longitudinal beam (1), a right longitudinal beam, a front cross beam (2) and a rear cross beam, wherein the left longitudinal beam (1) and the right longitudinal beam each extend in a front-rear direction, wherein a front end of the left longitudinal beam (1) and a front end of the right longitudinal beam are connected by the front cross beam (2), and a rear end of the left longitudinal beam (1) and a rear end of the right longitudinal beam are connected by the rear cross beam, and wherein the left longitudinal beam (1) and the right longitudinal beam each have a bracket (3) welded thereto.

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