Clamp for middle shell of electric recirculating ball steering gear

Abstract

The utility model relates to a clamp, in particular to a clamp for a middle shell of an electric recirculating ball steering gear. The clamp is composed of a base, positioning plates and positioning assemblies, the positioning plates are fixedly installed at the two ends of the base respectively, the multiple positioning assemblies are arranged on the positioning plates, and each positioning assembly is composed of a fastening bolt, a pressing plate and a supporting block. According to the clamp, the positioning assembly can be loosened by loosening the fastening bolt, and after the positioning assembly is loosened, the middle shell can be conveniently disassembled and assembled on the positioning plate; in the process, the fastening bolt does not need to be completely loosened, so that disassembly and assembly are convenient, the disassembly and assembly efficiency can be effectively improved, and the labor intensity is reduced. The positioning assembly is matched with the positioning plate so that the middle shell can be firmly and accurately fixed, it is guaranteed that the middle shell is not prone to moving in the machining process, the machining precision of the middle shell can be effectively guaranteed, and it is guaranteed that the machined middle shell is qualified. The problems that an existing clamping mode is inconvenient to clamp, low in clamping efficiency and high in labor intensity are solved.

Description

Technical Field

[0001] This utility model relates to a clamp, specifically a clamp for the intermediate housing of an electric recirculating ball steering gear. Background Technology

[0002] The intermediate housing of the electric recirculating ball steering gear (hereinafter referred to as the intermediate housing) is a component that supports high-precision parts such as worm gears, worm shafts, and sensors. The intermediate housing has an mounting groove for the worm gear, mounting holes for the worm shaft, and mounting blocks for the sensors. Depending on the layout requirements of the automotive engine compartment, the mounting blocks are located on the intermediate housing on one side or opposite to the mounting holes. Lugs are provided on the outer side of the intermediate housing from the mounting groove, and reinforcing ribs are provided on the side of the intermediate housing from the mounting holes. The intermediate housing needs to simultaneously ensure the meshing accuracy of the worm gear and worm shaft, as well as the connection accuracy of parts such as the input shaft and screw; therefore, the intermediate housing itself requires very high machining precision. The intermediate housing is generally formed by casting, followed by drilling and grinding. To ensure the machining precision of the intermediate housing, it needs to be accurately and firmly positioned to ensure that its position does not easily change during machining, thereby guaranteeing machining accuracy.

[0003] The current clamping method involves using multiple fixing bolts passed through bolt holes on the intermediate housing lugs to secure the intermediate housing. However, this method requires completely removing the nuts from the bolts before the intermediate housing can be disassembled or reassembled, making it inconvenient, inefficient, and labor-intensive. Therefore, it is necessary to design a clamping device for the intermediate housing of the electric recirculating ball steering gear to solve these problems. Summary of the Invention

[0004] The purpose of this utility model is to provide a clamp for the intermediate housing of an electric recirculating ball steering gear that can be fixed firmly and accurately, and can be easily disassembled and assembled, thereby improving disassembly and assembly efficiency and reducing labor intensity.

[0005] The technical solution of this utility model is:

[0006] A clamp for the intermediate housing of an electric recirculating ball steering gear comprises a base, a positioning plate, and positioning components. The positioning plates are fixedly mounted at both ends of the base. The positioning plate is characterized by having multiple sets of positioning components. Each positioning component consists of a set bolt, a pressure plate, and a support block. The set bolt has a pressure plate, and the positioning plate below the outer end of the pressure plate has a support block.

[0007] The positioning plate is provided with a worm gear housing positioning hole, and an assembly block positioning groove is connected to the worm gear housing positioning hole; a worm gear housing positioning groove A is provided on the positioning plate next to the assembly block positioning groove at one end of the base, and a worm gear housing positioning groove B is provided on the positioning plate opposite to the assembly block positioning groove at the other end of the base.

[0008] A cylindrical pin is provided on the positioning plate on one side of the positioning hole of the worm gear housing, and a prismatic pin is provided on the positioning plate on the other side of the positioning hole of the worm gear housing.

[0009] An clearance hole is provided on the base below the worm gear housing positioning hole; worm housing positioning groove A and worm housing positioning groove B are respectively provided on the base below them.

[0010] The pressure plate is provided with a strip-shaped hole, and the pressure plate is connected to the set bolt through the strip-shaped hole; the inner end of the pressure plate is tapered.

[0011] The beneficial effects of this utility model are as follows:

[0012] The clamping mechanism for the intermediate housing of this electric recirculating ball steering gear allows the positioning assembly to be loosened by loosening the set bolts. After loosening the positioning assembly, the intermediate housing can be easily disassembled and assembled from the positioning plate. This process does not require completely loosening the set bolts, thus facilitating disassembly and assembly, effectively improving efficiency and reducing labor intensity. The positioning assembly, in conjunction with the positioning plate, securely and accurately fixes the intermediate housing, ensuring it does not easily shift during processing and effectively guaranteeing machining accuracy and the quality of the finished intermediate housing. This solves the problems of inconvenient clamping, low clamping efficiency, and high labor intensity associated with existing clamping methods, making it particularly suitable for clamping intermediate housings. Attached Figure Description

[0013] Figure 1 This is an isometric schematic diagram of the present invention;

[0014] Figure 2 This is a top view of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of the positioning plate at one end of the base plate of this utility model;

[0016] Figure 4 This is a schematic diagram of the positioning plate at the other end of the base plate of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the base plate of this utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the pressure plate of this utility model;

[0019] Figure 7 This is a schematic diagram of the usage state of this utility model.

[0020] In the diagram: 1. Base, 2. Positioning plate, 3. Set bolt, 4. Pressure plate, 5. Support block, 6. Worm gear housing positioning hole, 7. Assembly block positioning groove, 8. Worm gear housing positioning groove A, 9. Worm gear housing positioning groove B, 10. Cylindrical pin, 11. Prismatic pin, 12. Clearance hole, 13. Worm gear housing limiting groove, 14. Strip hole, 15. Intermediate housing, 16. Assembly groove, 17. Assembly hole, 18. Assembly block. Detailed Implementation

[0021] The clamp for the intermediate housing of the electric recirculating ball steering gear consists of a base 1, a positioning plate 2, and positioning components. Positioning plates 2 are fixedly mounted at both ends of the base 1, and multiple sets of positioning components are installed on the positioning plates 2. The function of the positioning components is to press the intermediate housing onto the positioning plates 2, thereby fixing the intermediate housing in place through the cooperation of the positioning components and the positioning plates 2. This ensures that the intermediate housing does not easily move on the positioning plates 2 during processing, thus guaranteeing the machining accuracy of the intermediate housing.

[0022] The positioning assembly consists of a set bolt 3, a pressure plate 4, and a support block 5. The pressure plate 4 is mounted on the set bolt 3, and the support block 5 is mounted on the positioning plate 2 below the outer end of the pressure plate 4. The bottom end of the set bolt 3 is fixedly connected to the positioning plate 2. The function of the set bolt 3 is to generate a downward pressure on the inner end of the pressure plate 4 by tightening the set bolt 3, with the support block 5 as the fulcrum. This downward pressure is then exerted on the inner end of the pressure plate 4, pressing the intermediate housing firmly onto the positioning plate 2.

[0023] The positioning plate 2 is provided with a worm gear housing positioning hole 6 to limit and position the intermediate housing below the assembly slot. An assembly block positioning groove 7 is connected to the worm gear housing positioning hole 6 to limit and position the assembly block of the intermediate housing. A worm gear housing positioning groove A8 is provided on the positioning plate 2 next to the assembly block positioning groove 7 at one end of the base 1, and a worm gear housing positioning groove B9 is provided on the positioning plate 2 opposite to the assembly block positioning groove 7 at the other end of the base 1, to position and limit the intermediate housing outside the assembly hole through either the worm gear housing positioning groove A8 or the worm gear housing positioning groove B9.

[0024] A cylindrical pin 10 is provided on the positioning plate 2 on one side of the worm gear housing positioning hole 6, and a prismatic pin 11 is provided on the positioning plate 2 on the other side of the worm gear housing positioning hole 6. The function of the cylindrical pin 10 is to further limit and position the intermediate housing corresponding to the assembly slot by inserting the cylindrical pin 10 into the bolt hole of the intermediate housing support lug and the prismatic pin 11.

[0025] An clearance hole 12 is provided on the base 1 below the worm gear housing positioning hole 6; worm housing positioning grooves A8 and B9 are respectively provided on the base 1 to further limit and position the intermediate housing at the assembly hole port through the worm housing positioning grooves 13.

[0026] The pressure plate 4 has a slotted hole 14, through which it is fitted to the set bolt 3. The slotted hole 14 is used to adjust the position of the inner end of the pressure plate 4, ensuring that the pressure plate 4 can fully contact the intermediate housing, thereby ensuring downward pressure on the intermediate housing and ensuring that the pressure plate 4 can press the intermediate housing tightly. The inner end of the pressure plate 4 is tapered, so that the inner end of the pressure plate 4 gradually widens, thereby ensuring that the pressure plate 4 can press down on narrow parts of the intermediate housing.

[0027] When using the clamp for the intermediate housing of the electric recirculating ball steering gear, push the inner ends of the pressure plates 4 of the positioning components outward one by one to prevent the pressure plates 4 from affecting the placement of the intermediate housing. After the pressure plates 4 are pushed into place, place the intermediate housing on the positioning plate 2, and then insert the intermediate housing below the assembly slot into the worm gear housing positioning hole 6, the cylindrical pin 10 and the prismatic pin 11 into the bolt holes of the intermediate housing support lugs respectively, the assembly block of the intermediate housing into the assembly block positioning groove 7, and the intermediate housing outside the assembly hole into the worm gear housing positioning groove A8 or worm gear housing positioning groove B9 and the worm gear housing limiting groove 13 of the positioning plate 2 to position and install the intermediate housing on the positioning plate 2. After the intermediate housing is placed in place, lift and push the pressure plates 4 inward one by one so that the inner ends of the pressure plates 4 overlap the support lugs or reinforcing ribs of the intermediate housing. After the pressure plates 4 overlap in place, tighten the set bolts 3, and the set bolts 3 press and fix the intermediate housing on the positioning plate 2 through the pressure plates 4. After all the set bolts 3 of the positioning components are tightened one by one, the intermediate housing can be machined (grinded or drilled).

[0028] The clamping mechanism for the intermediate housing of this electric recirculating ball steering gear allows the positioning assembly to be loosened by loosening the set bolts. After loosening the positioning assembly, the intermediate housing can be easily disassembled and assembled from the positioning plate. This process does not require completely loosening the set bolts, thus facilitating disassembly and assembly, effectively improving efficiency and reducing labor intensity. The positioning assembly, in conjunction with the positioning plate, securely and accurately fixes the intermediate housing, ensuring it does not easily shift during processing and effectively guaranteeing machining accuracy and the quality of the finished intermediate housing. This solves the problems of inconvenient clamping, low clamping efficiency, and high labor intensity associated with existing clamping methods, making it particularly suitable for clamping intermediate housings.

Claims

1. A kind of electric circulating ball steering gear intermediate shell clamp, it is constituted by base (1), positioning plate (2) and positioning component, base (1) is respectively fixed with positioning plate (2) at both ends, it is characterized by: The positioning plate (2) is provided with a plurality of positioning assemblies; the positioning assembly is composed of a close bolt (3), a pressing plate (4) and a supporting block (5), the close bolt (3) is provided with the pressing plate (4), and the supporting block (5) is arranged on the positioning plate (2) below the outer end head of the pressing plate (4).

2. A clamp for an intermediate housing of an electrically powered recirculating ball steering gear according to claim 1, characterized in that: The positioning plate (2) is provided with a worm wheel housing positioning hole (6), the worm wheel housing positioning hole (6) is connected with an assembly block positioning groove (7); the positioning plate (2) on one end of the base (1) is provided with a worm housing positioning groove A (8) beside the assembly block positioning groove (7), and the positioning plate (2) on the other end of the base (1) is provided with a worm housing positioning groove B (9) opposite to the assembly block positioning groove (7).

3. A fixture for an electrically powered recirculating ball steering gear intermediate housing as defined in claim 2, wherein: The positioning plate (2) on one side of the worm wheel housing positioning hole (6) is provided with a cylindrical pin (10), and the positioning plate (2) on the other side of the worm wheel housing positioning hole (6) is provided with a prism pin (11).

4. A fixture for an electrically powered recirculating ball steering gear intermediate housing as defined in claim 2, wherein: The base (1) below the worm wheel housing positioning hole (6) is provided with an avoiding hole (12); the base (1) below the worm housing positioning groove A (8) and the worm housing positioning groove B (9) is respectively provided with a worm housing limiting groove (13).

5. A fixture for an electrically powered recirculating ball steering gear intermediate housing as defined in claim 1, wherein: The pressing plate (4) is provided with a strip-shaped hole (14), and the pressing plate (4) is connected with the close bolt (3) through the strip-shaped hole (14); the inner end head of the pressing plate (4) is conical.

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