A leaf spring clamp mold and clamp

Abstract

This invention relates to a leaf spring clamp mold and a clamp. The clamp mold includes: a lower bending module with a supporting surface and two bending planes, the two bending planes being located on opposite sides of the supporting surface and connected to it. The intersection lines of the two bending planes and the supporting surface are straight lines and parallel to each other. The distance between the two bending planes on the side connected to the supporting surface is less than the distance between the two bending planes on the side away from the supporting surface. The included angle formed at the connection points of the bending planes and the supporting surface is not less than 90° and not greater than 100°. An upper bending module is provided with a bending groove for accommodating the lower bending module. The bending groove includes a supporting bottom wall for engaging with the bending planes and two bending side walls for engaging with the two bending planes respectively. The clamp formed by the mold of this application has an included angle of approximately 90° at the bottom and side edges. This results in minimal deformation at the included angle during clamp assembly, improving the accuracy of the width dimension during clamp assembly and reducing the rework rate.

Description

Technical Field

[0001] This invention relates to the technical field of leaf springs, and specifically to a leaf spring clamp mold and clamp. Background Technology

[0002] Leaf springs are an important component of automotive suspension. They are composed of several alloy springs of equal width but unequal length (thickness may be equal or unequal) forming an elastic beam of approximately equal strength. Leaf springs are used to transmit forces and torques between the wheels and the chassis, and also serve to dampen shocks and guide the vehicle.

[0003] The clamps of leaf springs are an important component of the leaf spring assembly, and their function is to prevent misalignment between the leaf springs. One type of clamp in related technology is formed by pressing during processing. Figure 1 The initial state shown is the state after the leaf spring assembly is pressed onto the leaf spring assembly using a pneumatic clamp during assembly. Figure 1 The assembly state is shown.

[0004] When the clamp is pressed from its initial state to its assembled state, the angle between the bottom and side of the clamp is the point of maximum stress, which is prone to deformation and outward bulge. This results in an increase in the outer width of the clamp in the direction of the leaf spring width. The increase in the outer width of the clamp may cause interference with other parts of the vehicle, requiring manual rework to meet the accuracy requirements, which increases the workload and cost. Summary of the Invention

[0005] Based on the above description, the present invention provides a leaf spring clamp mold and clamp to solve the problem in the related art where, when the clamp is pressed from the initial state to the assembly state, the angle between the bottom and side of the clamp is the point of maximum stress, which is prone to deformation and outward bulging, resulting in an increase in the outer width of the clamp in the leaf spring width direction. The increase in the outer width of the clamp may cause interference with other parts of the vehicle, requiring manual rework to meet the accuracy requirements, which increases the workload and cost.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0007] Firstly, this application provides a leaf spring clamp mold, the technical solution of which is as follows:

[0008] A leaf spring clamp mold, characterized in that it comprises:

[0009] The bending module has a support surface and two bending planes. The two bending planes are located on opposite sides of the support surface and are connected to the support surface. The intersection lines of the two bending planes and the support surface are straight lines and parallel to each other. The distance between the two bending planes on the side connected to the support surface is less than the distance between the two bending planes on the side away from the support surface. The included angle formed by the connection between the bending planes and the support surface is not less than 90° and not greater than 100°.

[0010] The upper bending module is provided with a bending groove for accommodating the lower bending module. The bending groove includes a supporting bottom wall for cooperating with the bending plane and two bending side walls for cooperating with the two bending planes respectively.

[0011] Based on the above technical solution, the present invention can be further improved as follows.

[0012] Preferably, the supporting surface includes two supporting planes, which are respectively connected to the two bending planes, and the angle between the supporting planes and the bending planes is not less than 90° and not greater than 100°.

[0013] Preferably, the supporting surface includes an intermediate supporting surface connecting the two supporting planes, and the intermediate supporting surface is a plane or a concave arc surface.

[0014] Preferably, the intermediate support surface is a concave arc surface.

[0015] Preferably, the angle formed at the connection between the bending plane and the supporting surface is not less than 90° and not greater than 95°.

[0016] Preferably, the lower bending module is provided with a positioning pin, the positioning pin protruding from the support surface, and the upper bending module has a positioning hole on the bottom wall of the support that matches the positioning pin.

[0017] Secondly, this application provides a clamp, comprising:

[0018] Base plate;

[0019] Two side plates, each being a flat plate, are respectively connected to both ends of the base plate. The distance between the two side plates on the side connected to the base plate is less than the distance between the two side plates on the side away from the base plate. The angle between the side plates and the base plate is not less than 90° and not greater than 100°.

[0020] Two top plates, each a flat plate, are respectively connected to two side plates, and the plane of the top plate is perpendicular to the plane of the side plate.

[0021] Preferably, there are two top plates, each a flat plate, which are respectively connected to two side plates. The top plates are connected to the side plates on the side away from the bottom plate, and the plane of the top plate is perpendicular to the plane of the side plate.

[0022] Preferably, the connecting portion is arc-shaped, and the two side plates are located on the convex side of the connecting portion.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0024] 1. This application involves setting a support surface and two bending planes on the lower bending module. During clamp forming, the semi-finished clamp is placed on the support surface, and the clamp is formed by the cooperation of the lower bending module and the upper bending module. After clamp forming, it is in its initial state. Due to the changing angle between the two bending planes in the mold, the two sides of the clamp in the initial state are arranged in a V-shape. This facilitates the assembly of the clamp in the initial state onto the leaf spring assembly. Due to the angle between the bending plane and the support surface, its bottom and sides are clamped... With an angle of 90°-100° at the corner, even when the angle between the bottom and side of the clamp is close to 90° in the assembly state, when the clamp is pressed onto the leaf spring assembly using a pneumatic clamp, the clamp changes from the initial state to the assembly state. During this process, the deformation of the clamp mainly occurs at the bottom of the clamp, and the deformation at the bottom and side angles is small, so it is not easy for it to bulge outward. The outer width dimension of the clamp is not easy to increase or the increase is small, which improves the accuracy of the width dimension when the clamp is assembled and pressed, improves the assembly efficiency of the leaf spring assembly, and reduces the rework rate. Attached Figure Description

[0025] Figure 1 The accompanying drawings are for the background art of this invention;

[0026] Figure 2 This is a schematic diagram of the clamp structure provided in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the leaf spring clamp mold provided in an embodiment of the present invention;

[0028] Figure 4 This is a top view of the upper bending module in the leaf spring clamp mold provided in an embodiment of the present invention.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Base plate; 11. Preformed part; 12. Connecting part; 13. Mounting hole; 2. Side plate; 3. Top plate; 4. Lower bending module; 41. Support surface; 411. Support plane; 412. Intermediate support surface; 42. Bending plane; 43. Positioning pin; 5. Upper bending module; 51. Bending groove; 511. Support bottom wall; 512. Bending side wall; 52. Positioning hole. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0033] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0034] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0035] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0036] Reference Figure 2As shown in the figure, this application provides a clamp, which includes a base plate 1, two side plates 2 and two top plates 3. The side plates 2 and the top plates 3 are both flat plates. The two side plates 2 are respectively connected to the two ends of the base plate 1. The distance between the two side plates 2 and the base plate 1 is less than the distance between the two side plates 2 and the side away from the base plate 1. The included angle between the side plates 2 and the base plate 1 is not less than 90° and not greater than 100°. The two top plates 3 are respectively connected to the two side plates 2. The top plates 3 are connected to the side of the side plates 2 away from the base plate 1, and the plane of the top plate 3 is perpendicular to the plane of the side plates 2.

[0037] Specifically, when assembling the clamp onto the leaf spring assembly, the clamp is installed in the designated position on the leaf spring assembly, and the clamp is pressed into the assembly state when assembled onto the leaf spring assembly using a pneumatic clamp. During the pressing process, the deformation of the clamp mainly occurs on the base plate 1, with minimal deformation at the angle between the base plate 1 and the side plate 2, making it less prone to outward bulging. The outer width dimension of the clamp is not easily increased or the increase is small, thereby improving the accuracy of the width dimension during clamp assembly pressing, improving the assembly efficiency of the leaf spring assembly, and reducing the rework rate.

[0038] Reference Figure 2 As shown, the base plate 1 further includes a connecting part 12 and two pre-formed parts 11. The pre-formed parts 11 are flat plates, and the two pre-formed parts 11 are respectively connected to two side plates 2. The included angle between the pre-formed parts 11 and the side plates 2 is not less than 90° and not greater than 100°. The connecting part 12 connects the two pre-formed parts 11. Specifically, the connecting part 12 can be a flat plate or an arc-shaped plate. When the connecting part 12 is a flat plate, the deformation of the base plate 1 during the clamp assembly process occurs at the connection between the pre-formed parts 11 and the connecting part 12. When the connecting part 12 is arc-shaped, the two side plates 2 are located on the convex side of the connecting part 12, and the connection between the connecting part 12 and the pre-formed parts 11 transitions smoothly. In this way, during the clamp assembly process, the connecting part 12 bends from an arc shape to a flat plate state until the base plate 1 as a whole is a flat plate. The deformation at the connection between the base plate 1 and the side plates 2 is small during the clamp assembly process.

[0039] Reference Figure 2 As shown, the included angle between the preformed part 11 of the base plate 1 and the side plate 2 can be 90°, so that the connection between the base plate 1 and the side plate 2 will not deform during the clamp assembly process. The specific angle can be adjusted according to actual needs. In this embodiment, 90° is used as an illustration.

[0040] Reference Figure 2 As shown, a through mounting hole 13 is provided at the center of the base plate 1 of the clamp. The mounting hole 13 is provided for the clamp to connect with the leaf spring assembly.

[0041] Reference Figure 3-4As shown, this application embodiment also provides a leaf spring clamp mold for forming the clamp as described above, including a lower bending module 4 and an upper bending module 5. The lower bending module 4 is provided with a support surface 41 and two bending planes 42. The two bending planes 42 are respectively located on opposite sides of the support surface 41 and connected to the support surface 41. The intersection lines of the two bending planes 42 and the support surface 41 are straight lines and parallel to each other. The distance between the two bending planes 42 and the side connected to the support surface 41 is less than the distance between the two bending planes 42 and the side away from the support surface 41. The included angle formed at the connection point of the bending planes 42 and the support surface 41 is not less than 90° and not greater than 100°. The upper bending module 5 is provided with a bending groove 51 for accommodating the lower bending module 4. The bending groove 51 includes a supporting bottom wall 511 for cooperating with the bending planes 42 and two bending side walls 512 for cooperating with the two bending planes 42 respectively.

[0042] Reference Figure 3-4 As shown, specifically, the upper bending module 5 and the lower bending module 4 are distributed vertically. On the lower bending module 4, the support surface 41 is located at the top of the lower bending module 4, and two bending planes 42 are located on both sides of the lower bending module 4 and connected to the support surface 41. The bending groove 51 on the upper bending module 5 is opened at the bottom. The support bottom wall 511 of the bending groove 51 is located directly above the support surface 41 and is adapted to the support bottom wall 511, so that the bottom plate 1 of the clamp is formed by the cooperation of the support bottom wall 511 and the support surface 41. The two bending side walls 512 of the bending groove 51 are parallel to the two bending planes 42 respectively, so that the side plate 2 of the clamp is formed by the cooperation of the bending side walls 512 and the bending planes 42.

[0043] Reference Figure 3-4 As shown, since the clamp includes two pre-formed parts 11 and one connecting part 12, the support surface 41 is correspondingly configured to include two support planes 411 and one intermediate support surface 412. The two support planes 411 are respectively connected to two bending planes 42. The support planes 411 cooperate with the support bottom wall 511 on the bending upper module 5 to form the pre-formed part 11, and the intermediate support surface 412 cooperates with the support bottom wall 511 on the bending upper module 5 to form the connecting part 12. Correspondingly, the included angle between the support planes 411 and the bending planes 42 is not less than 90° and not greater than 100°.

[0044] Reference Figure 3-4 As shown, the connecting part 12 in the clamp is a flat plate or an arc plate. Correspondingly, the intermediate support surface 412 is a flat surface or an inwardly concave arc surface. The position on the support bottom wall 511 on the bending module 5 corresponding to the intermediate support surface 412 is set as a flat surface or an outwardly convex arc surface according to the shape of the intermediate support surface 412. In this embodiment, the intermediate support surface 412 is shown as an arc surface.

[0045] The angle between the supporting plane 411 and the bending plane 42 can be further set to not less than 90° and not more than 95°, based on the angle between the base plate 1 and the side plate 2 of the clamp. In this embodiment, 90° is used as an illustration.

[0046] Reference Figure 3 As shown, further, a positioning pin 43 is provided on the lower bending module 4, the positioning pin 43 protrudes from the support surface 41, and a positioning hole 52 adapted to the positioning pin 43 is opened on the support bottom wall 511 of the upper bending module 5; specifically, the positioning pin 43 is fixed on the lower bending module 4 and the axis is vertical, and the positioning pin 43 is adapted to the mounting hole 13 on the clamp base plate 1, so as to position the clamp by the cooperation of the positioning pin 43 and the mounting hole 13 on the clamp base plate 1.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A leaf spring clamp mold, characterized in that, include: The bending module (4) has a support surface (41) and two bending planes (42) on it. The two bending planes (42) are located on opposite sides of the support surface (41) and connected to the support surface (41). The intersection lines of the two bending planes (42) and the support surface (41) are straight lines and parallel to each other. The distance between the two bending planes (42) and the support surface (41) on the side connected is less than the distance between the two bending planes (42) and the side away from the support surface (41). The included angle formed by the connection between the bending planes (42) and the support surface (41) is not less than 90° and not greater than 100°. The upper bending module (5) is provided with a bending groove (51) for accommodating the lower bending module (4). The bending groove (51) includes a supporting bottom wall (511) for cooperating with the supporting surface (41) and two bending side walls (512) for cooperating with the two bending planes (42). The support surface (41) includes two support planes (411) and an intermediate support surface (412) connecting the two support planes (411). The two support planes (411) are respectively connected to the two bending planes (42). The angle between the support plane (411) and the bending plane (42) is not less than 90° and not greater than 100°. The intermediate support surface (412) is a concave arc surface.

2. The leaf spring clamp mold according to claim 1, characterized in that: The angle formed at the connection between the bending plane (42) and the supporting surface (41) is not less than 90° and not greater than 95°.

3. The leaf spring clamp mold according to claim 1, characterized in that: The lower bending module (4) is provided with a positioning pin (43), which protrudes from the support surface (41). The upper bending module (5) has a positioning hole (52) on the support bottom wall (511) that is compatible with the positioning pin (43).

4. A clamp, manufactured using a leaf spring clamp mold as described in any one of claims 1-3, characterized in that, include: Base plate (1); Two side plates (2), the side plates (2) are flat plates, the two side plates (2) are respectively connected to the two ends of the bottom plate (1), the distance between the two side plates (2) and the bottom plate (1) is less than the distance between the two side plates (2) away from the bottom plate (1), and the included angle between the side plates (2) and the bottom plate (1) is not less than 90° and not greater than 100°; Two top plates (3) are flat plates. The two top plates (3) are respectively connected to the two side plates (2). The top plates (3) are connected to the side plates (2) away from the bottom plate (1), and the plane of the top plate (3) is perpendicular to the plane of the side plate (2). The bottom plate (1) includes a connecting part (12) and two pre-formed parts (11). The pre-formed parts (11) are flat plates. The two pre-formed parts (11) are respectively connected to the two side plates (2). The angle between the pre-formed parts (11) and the side plates (2) is not less than 90° and not greater than 100°. The connecting part (12) connects the two pre-formed parts (11). The connecting part (12) is arc-shaped, and the two side plates (2) are located on the convex side of the connecting part (12).

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