Electric vehicle swing arm bushing press-in tool

Abstract

The utility model relates to an electric vehicle swing arm bushing press-in tool which comprises a base, an upper pressing plate and a connecting plate, guide sliding rods are arranged on the two sides of the base respectively, sliding holes are formed in the two ends of the upper pressing plate respectively, the guide sliding rods are sleeved with the sliding holes, a pressing plate return spring is arranged between the upper pressing plate and the base, and the connecting plate is connected with the pressing plate return spring. The pressing plate return springs are arranged on the outer sides of the guide sliding rods in a sleeving mode, at least two end face positioning assemblies are arranged on the base, upper pressing heads are arranged on the lower surface of the upper pressing plate, the upper pressing heads and the end face positioning assemblies are arranged in pairs, and a lifting plate is arranged on one side of the base. According to the swing arm press-fitting tool, positioning is conducted through the end face positioning assembly, the upper pressing head is pressed downwards through the upper pressing plate, four limiting columns are arranged, stabilization is conducted, the press-in position is accurate, the tool is easy to assemble and disassemble, in the press-in process, a swing arm body is free of interference, the production takt is not affected, two swing arms can be press-fitted at the same time, and efficiency is doubled.

Description

Technical Field

[0001] This utility model relates to the field of vehicle production tooling technology, and in particular to a tooling for pressing in a swing arm bushing for an electric vehicle. Background Technology

[0002] The swingarm assembly in electric vehicles and motorcycles is a crucial component connecting the rear wheel to the frame. It plays a vital role in bearing loads, cooperating with the shock absorbers, and transmitting power. During assembly, bushings need to be pressed into the corresponding positions of the swingarm and frame. The bushing is the core medium between the swingarm and frame; it is a type of component that protects rigid parts. Using bushings reduces wear on the swingarm, overall vehicle vibration and noise, and also provides corrosion protection. Figure 1 One type of swing arm body is shown, with a sleeve hole on the swing arm body. A bushing needs to be pressed into the sleeve hole, and an interference fit is formed between the bushing and the sleeve hole.

[0003] In the actual pressing process, because the swing arm of the electric vehicle is irregularly shaped, it is necessary to manually hold the swing arm and place the corresponding sleeve hole under the press head. The bushing is placed above the middle of the sleeve hole, and the press head is pressed down using a press machine. When pressing the bushing, it is easy to interfere with the swing arm, and the swing arm is easy to wobble, causing the bushing to deform or crack, resulting in assembly failure. Since there is no limit to the pressing stroke, it is also easy to over-press. Over-pressing will cause damage to the main body of the swing arm, damage and misalignment of the bushing, and contact between the shock absorber fixing plate and the swing arm, thus generating resonance. Summary of the Invention

[0004] To overcome the aforementioned shortcomings, the purpose of this utility model is to provide a tooling for pressing in the swing arm bushing of an electric vehicle.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an electric vehicle swing arm bushing pressing fixture, including a base, an upper pressure plate, and a connecting plate. The connecting plate is used to connect a power source. Guide slide rods are respectively provided on both sides of the base. Sliding holes are respectively provided at both ends of the upper pressure plate, and the sliding holes are sleeved on the outside of the guide slide rods. A pressure plate return spring is provided between the upper pressure plate and the base. The pressure plate return spring is sleeved on the outside of the guide slide rods. At least two end face positioning components are provided on the base. An upper pressure head is provided on the lower surface of the upper pressure plate. The upper pressure head and the end face positioning components are arranged in pairs and located directly above the corresponding end face positioning components. A lifting plate is provided on one side of the base, and each end face positioning component corresponds to a lifting plate.

[0006] Specifically, the end face positioning component includes an end face positioning sleeve, an end face positioning block, and a guide post. The end face positioning block is fixedly installed inside the end face positioning sleeve, and a guide post is provided above the end face positioning block. A blind hole is provided on the lower surface of the upper pressure head corresponding to the end face positioning component, and the guide post can be inserted into the blind hole.

[0007] Specifically, the end face positioning sleeve is fitted onto the mounting block, and the mounting block is fixed to the base by bolts.

[0008] Specifically, the base is provided with limiting posts at its four corners, and the upper pressure plate is provided with limiting holes at its four corners. The limiting posts pass through the limiting holes, and the upper end of the limiting posts is provided with an upper limiting ring. The limiting posts are provided with a lower limiting ring, and the upper limiting ring and the lower limiting ring are located above and below the limiting holes, respectively.

[0009] Specifically, the limiting post includes an upper limiting ring, a lower limiting ring, and an intermediate screw. The upper limiting ring is fixed to the top of the intermediate screw, the lower limiting ring is assembled on the intermediate screw by a threaded connection, and the bottom of the intermediate screw is fixed to the base by a threaded connection.

[0010] Specifically, the sliding hole is provided with an anti-wear sleeve, the upper edge of the anti-wear sleeve is provided with an outer edge, the outer edge is fixed to the upper surface of the upper pressure plate by bolts, and the anti-wear sleeve is provided outside the guide slide rod.

[0011] Specifically, a positioning block is provided at the end of the lifting plate away from the base.

[0012] Specifically, the side wall of the base is provided with multiple sets of side ears, and fixing bolts are installed in the side ears by means of threaded connection.

[0013] Specifically, the end face positioning block can slide along the end face positioning sleeve. An adjusting screw hole is provided below the end face positioning block, and an adjusting bolt is installed in the adjusting screw hole. The adjusting bolt passes through the through hole of the base and can move up and down along the through hole. A limiting nut head is provided at the lower end of the adjusting bolt. The limiting nut head is located below the through hole of the base. A positioning return spring is provided between the end face positioning block and the base. The positioning return spring is sleeved outside the adjusting bolt. Under no external force, the end face positioning block is 2 to 3 mm higher than the end face positioning sleeve and protrudes outside the end face positioning sleeve.

[0014] Specifically, the lower surface of the base has an clearance groove, and the head of the limiting nut is located in the clearance groove.

[0015] The beneficial effects of this utility model are as follows: The structure of this utility model is positioned by the end face positioning component, the upper pressure head is pressed down together by the upper pressure plate, and four limit posts are set for stability, the pressing position is accurate, the tooling is easy to install and disassemble, and no tooling is required; at the same time, the swing arm is lifted by the lifting plate, and the positioning block on the lifting plate can be used to lock the reinforcing rib and connecting ear below the swing arm. During the pressing process, the main body of the swing arm is not interfered with, and the production cycle is not affected. Two swing arms can be pressed at the same time, and the efficiency is doubled. The structural design of this utility model can be applied to the bushing pressing of most electric vehicle and motorcycle split swing arms, and is suitable for electric vehicle manufacturers, component suppliers, after-sales service units, etc. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of another aspect of the structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the present invention in its working state.

[0019] Figure 4 This is a cross-sectional view of the present invention in its working state.

[0020] Figure 5 This is a rear view of the present invention.

[0021] Figure 6 This is a side view of the present invention.

[0022] Figure 7 This is a sectional view along the AA direction of this utility model.

[0023] Figure 8 This is a sectional view of the present invention along the BB direction.

[0024] Figure 9 This is a schematic diagram of the end face positioning component according to another embodiment of the present invention.

[0025] In the diagram, 1 is the base, 101 is the side ear, 102 is the fixing bolt, 2 is the upper pressure plate, 3 is the pressure connecting plate, 4 is the guide slide rod, 401 is the pressure plate return spring, 5 is the limiting post, 6 is the end face positioning assembly, 601 is the end face positioning sleeve, 602 is the end face positioning block, 603 is the guide post, 604 is the adjusting bolt, 605 is the positioning return spring, 7 is the mounting block, 8 is the upper pressure head, 9 is the first lifting plate, 901 is the first positioning block, 10 is the bushing, 11 is the swing arm body, 1101 is the large sleeve hole, and 1102 is the small sleeve hole. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] Example 1

[0028] like Figures 1 to 8The electric vehicle swing arm bushing press-fit fixture shown includes a base 1, an upper pressure plate 2, and a connecting plate 3. The connecting plate 3 is used to connect a power source, i.e., a press. Guide slide rods 4 are provided on both sides of the base 1. Sliding holes are provided at both ends of the upper pressure plate 2, and the sliding holes are sleeved on the guide slide rods 4. A pressure plate return spring 401 is provided between the upper pressure plate 2 and the base 1. The pressure plate return spring 401 is sleeved on the outside of the guide slide rods 4. At least two end face positioning components 6 are provided on the base 1. An upper pressure head 8 is provided on the lower surface of the upper pressure plate 2. The upper pressure head 8 is paired with the end face positioning components and is located directly above the corresponding end face positioning component 6. A lifting plate 9 is provided on one side of the base 1, and each end face positioning component 6 corresponds to a lifting plate.

[0029] Specifically, the end face positioning component 6 includes an end face positioning sleeve 601, an end face positioning block 602, and a guide post 603. The end face positioning block 602 is fixedly installed inside the end face positioning sleeve 601, and the guide post 603 is provided above the end face positioning block 602. The lower surface of the upper pressure head 7 corresponding to the end face positioning component 6 is provided with a blind hole 701, and the guide post 603 can be inserted into the blind hole 701.

[0030] Specifically, the end face positioning sleeve 601 is provided on the mounting block 7, and the mounting block 7 is fixed to the base 1 by bolts.

[0031] Specifically, the base 1 is provided with limiting posts 5 at its four corners, and the upper pressure plate 2 is provided with limiting holes at its four corners. The limiting posts 5 pass through the limiting holes. The upper end of the limiting posts 5 is provided with an upper limiting ring 501, and the limiting posts 5 are provided with a lower limiting ring 502. The upper limiting ring 501 and the lower limiting ring 502 are located above and below the limiting holes, respectively. The distance between the upper limiting ring 501 and the lower limiting ring 502 is set according to the pressing distance of the bushing 10. The upper limiting ring 501 is used to limit the upper position of the upper pressure plate 2 to prevent the upper pressure plate 2 from coming out under the elastic force of the pressure plate return spring 401. The lower limiting ring 502 is used to limit the lower position of the upper pressure plate 2 to prevent over-pressing.

[0032] Specifically, the limiting post 5 includes an upper limiting ring 501, a lower limiting ring 502, and an intermediate screw 503. The upper limiting ring 501 is fixed to the top of the intermediate screw 503, and the lower limiting ring 502 is assembled on the intermediate screw 503 by a threaded connection, which facilitates the adjustment of the distance between the upper and lower limiting rings and is suitable for bushings 10 with different pressing depths or different thicknesses. The bottom of the intermediate screw 503 is fixed to the base 1 by a threaded connection.

[0033] Specifically, the sliding hole is provided with an anti-wear sliding sleeve 201, and the upper edge of the anti-wear sliding sleeve 201 is provided with an outer edge 202. The outer edge 202 is fixed to the upper surface of the upper pressure plate 2 by bolts. The anti-wear sliding sleeve 201 is located outside the guide slide rod 4, which plays the role of anti-wear. It is also convenient to replace after wear, thus reducing maintenance costs.

[0034] Specifically, the end of the lifting plate 9 away from the base 1 is provided with a positioning block 901, which is used to lock the reinforcing rib or connecting ear below the swing arm to prevent the swing arm body 11 from shaking.

[0035] Specifically, the side wall of the base 1 is provided with multiple sets of side ears 101, and the side ears 101 are fitted with fixing bolts 102 by threaded connection, which are used to assemble the base 1 on different workbenches for easy installation and disassembly.

[0036] like Figure 1 , 2 As shown in Figures 3 and 4, this embodiment is provided with two end face positioning components 6 of different sizes, which are respectively used for the large sleeve hole 1101 and the small sleeve hole 1102 at both ends of the swing arm body 11. The large sleeve hole 1101 needs to be fitted with a large bushing, and the small sleeve hole 1102 needs to be fitted with a small bushing. The two ends are respectively equipped with end face positioning components 6 and upper pressure heads 8 of corresponding sizes. Each end face positioning component 6 corresponds to a lifting plate 9, which is used to support the corresponding swing arm body. In use, the sleeve hole of the swing arm body 11 is passed through the guide post 603 and placed on the upper surface of the end face positioning sleeve 601. Then, the bushing 10 is fitted on the guide post 603, located above the sleeve hole. The power source is started, and the upper pressure plate 2 drives the upper pressure head 8 to press the bushing 10 down, so that the bushing 10 is pressed into the sleeve hole, completing the press-fitting work.

[0037] Example 2

[0038] like Figure 9The electric vehicle swing arm bushing press-in fixture shown includes an end face positioning component 6 comprising an end face positioning sleeve 601, an end face positioning block 602, and a guide post 603. The end face positioning sleeve 601 houses the end face positioning block 602, which can slide along the end face positioning sleeve 601. A guide post 603 is located above the end face positioning block 602. A blind hole 701 is provided on the lower surface of the upper press head 7 corresponding to the end face positioning component 6, into which the guide post 603 can be inserted. An adjusting screw hole is provided below the end face positioning block 602, and an adjusting bolt 604 is fitted into the adjusting screw hole. The adjusting bolt 604 passes through a through hole in the base 1 and can slide along the through hole. The lower end of the adjusting bolt 604 is provided with a limiting nut head 606, which is located below the through hole of the base 1. The lower surface of the base 1 has an clearance groove 103, and the limiting nut head 606 is located in the clearance groove 103 to facilitate the flattening of the base 1. A positioning return spring 605 is provided between the end face positioning block 602 and the base 1. The positioning return spring 605 is sleeved on the outside of the adjusting bolt 604 and does not contact the adjusting bolt. Under the action of the positioning return spring 605, the end face positioning block 602 is 2 to 3 mm higher than the end face positioning sleeve 601 and protrudes outside the end face positioning sleeve 601. Its function is to use the protrusion for positioning after the swing arm is placed.

[0039] See tooling idle status Figure 9 There is a 2-3mm height difference between the end face of the guide post and the end face of the swing arm. The first function is to use the protrusion for positioning after the swing arm body 11 is placed, and to place the bushing 10 through the guide post 603 onto the swing arm body 11.

[0040] Taking the large bushing as an example, press the power source, i.e., the press machine. The press head pushes the upper pressure plate 2, which in turn drives the upper pressure head 8 to slowly press the large bushing into the sleeve hole of the swing arm body 11. When the upper pressure plate 2 contacts the lower limit ring 5, after pressing for about 3 seconds, the guide column 603 is pushed down by the large bushing 11 and compresses the positioning return spring 605 to avoid it. The pressing work is completed. After releasing the press machine handle and taking out the parts, the reciprocating assembly work is carried out.

[0041] This utility model is not limited to the described embodiments. Anyone should know that any structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

[0042] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A tooling for pressing in a swing arm bushing for an electric vehicle, comprising a base, an upper pressure plate, and a connecting plate, wherein the connecting plate is used to connect a power source, characterized in that: The base is provided with guide slide rods on both sides, and the upper pressure plate is provided with sliding holes at both ends. The sliding holes are sleeved on the outside of the guide slide rods. A pressure plate return spring is provided between the upper pressure plate and the base. The pressure plate return spring is sleeved on the outside of the guide slide rods. The base is provided with at least two end face positioning components. The lower surface of the upper pressure plate is provided with an upper pressure head. The upper pressure head and the end face positioning component are arranged in pairs and located directly above the corresponding end face positioning component. A lifting plate is provided on one side of the base. Each end face positioning component corresponds to one lifting plate. The base is provided with limiting posts at its four corners, and the upper pressure plate is provided with limiting holes at its four corners. The limiting posts pass through the limiting holes, and the upper end of the limiting posts is provided with an upper limiting ring. The limiting posts are provided with a lower limiting ring, and the upper limiting ring and the lower limiting ring are located above and below the limiting holes, respectively. The end face positioning component includes an end face positioning sleeve, an end face positioning block, and a guide post. The end face positioning block is fixedly installed inside the end face positioning sleeve, and a guide post is provided above the end face positioning block. A blind hole is provided on the lower surface of the upper pressure head corresponding to the end face positioning component, and the guide post can be inserted into the blind hole.

2. The electric vehicle swing arm bushing press-in fixture according to claim 1, characterized in that: The end face positioning sleeve is fitted onto the mounting block, and the mounting block is fixed to the base by bolts.

3. The electric vehicle swing arm bushing press-in fixture according to claim 1, characterized in that: The limiting post includes an upper limiting ring, a lower limiting ring, and an intermediate screw. The upper limiting ring is fixed to the top of the intermediate screw, the lower limiting ring is assembled onto the intermediate screw via a threaded connection, and the bottom of the intermediate screw is fixed to the base via a threaded connection.

4. The electric vehicle swing arm bushing press-in fixture according to claim 1, characterized in that: The sliding hole is provided with an anti-wear sleeve. The upper edge of the anti-wear sleeve has an outer edge, which is fixed to the upper surface of the upper pressure plate by bolts. The anti-wear sleeve is located outside the guide slide rod.

5. The electric vehicle swing arm bushing press-in fixture according to claim 1, characterized in that: The lifting plate has a positioning block at the end away from the base.

6. The electric vehicle swing arm bushing press-in fixture according to claim 1, characterized in that: The base has multiple sets of side ears on its side wall, and fixing bolts are installed in the side ears by means of threaded connection.

7. The electric vehicle swing arm bushing press-in fixture according to claim 1, characterized in that: The end face positioning block can slide along the end face positioning sleeve. An adjusting screw hole is provided below the end face positioning block, and an adjusting bolt is installed in the adjusting screw hole. The adjusting bolt passes through the through hole of the base and can move up and down along the through hole. A limiting nut head is provided at the lower end of the adjusting bolt. The limiting nut head is located below the through hole of the base. A positioning return spring is provided between the end face positioning block and the base. The positioning return spring is sleeved outside the adjusting bolt. Under no external force, the end face positioning block is 2 to 3 mm higher than the end face positioning sleeve and protrudes outside the end face positioning sleeve.

8. The electric vehicle swing arm bushing press-in fixture according to claim 7, characterized in that: The lower surface of the base has an clearance groove, and the head of the limiting nut is located in the clearance groove.

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