Air tightness test air inlet tool for automobile electric power steering gear

Abstract

The utility model discloses an air tightness test air inlet tool for an automobile electric power steering gear, and the tool comprises a positioning block, a positioning assembly which is disposed on the positioning block and is used for forming a sealed space with a housing of an all-in-one machine, a pressing block which is movably disposed and is used for making contact with an end cover of the all-in-one machine, and a control mechanism which is used for controlling the pressing block to move. The pressing block and the positioning assembly are oppositely arranged. The air tightness test air inlet tool for the automobile electric power steering gear can ensure that the ventilation valve does not need to be disassembled and assembled when air tightness test air inlet is carried out, the air tightness test operation process is simplified, the working efficiency is improved, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle steering systems, and in particular relates to an air tightness test air intake tooling for an automobile electric power steering device. Background Art

[0002] There is an existing automobile electric power steering structure without an air tightness test air inlet hole. Before the air tightness test, the air valve provided on the brushless integrated machine needs to be removed, and then the air intake tool is screwed into the air valve installation threaded hole to perform the air tightness test of the assembly.

[0003] The existing air intake tooling has the following problems:

[0004] 1. The space for installing the air intake tooling is limited, which interferes with the product bracket and shell, making the operation inconvenient and the work efficiency low;

[0005] 2. The breathable valve is made of PA66 material. Repeated disassembly and assembly of the breathable valve may easily damage the threads on the breathable valve.

[0006] A Chinese patent with application number 202221323949. discloses an air intake device for an automobile electric power steering air tightness test, comprising an air intake joint for threaded connection with a product to be tested, an air intake sleeve sleeved on the air intake joint, a locking handle connected to the air intake joint and used to drive the air intake joint to rotate when the air intake joint is threadedly connected to the product to be tested, and an air pipe joint arranged on the air intake sleeve, wherein an annular air intake duct is arranged inside the air intake sleeve for guiding gas from the air pipe joint to the air intake joint.

[0007] It is hoped to provide an improved air tightness test air intake tool for an automobile electric power steering device, and in particular to provide a device capable of improving the test operation process and increasing work efficiency. Utility Model Content

[0008] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an air tightness test air intake tool for an automobile electric power steering device, the purpose of which is to improve work efficiency.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an air tightness test air intake tooling for an automobile electric power steering device, comprising a positioning block, a positioning assembly arranged on the positioning block and used to form a sealed space with the integrated machine housing, a movably arranged pressure block used to contact the integrated machine end cover and an operating mechanism for controlling the movement of the pressure block, and the pressure block and the positioning assembly are arranged relative to each other.

[0010] The positioning assembly comprises a positioning sleeve arranged on the positioning block and a first sealing ring arranged on the positioning sleeve and used for contacting the integrated machine housing, and the positioning sleeve is a hollow component.

[0011] The first sealing ring is an O-type sealing ring.

[0012] The outer diameter of the positioning sleeve is interference fit with the first countersunk hole arranged on the positioning block.

[0013] The operating mechanism comprises a locking handle connected to the pressing block, a locking sleeve is arranged on the positioning block, and the locking handle and the locking sleeve are threadedly connected.

[0014] One end of the locking handle is connected to the pressing block through a hexagon socket bolt, and the other end surface of the locking handle is provided with a reticulated knurling.

[0015] A countersunk hole is arranged in the locking handle.

[0016] An adjusting gasket is arranged between the pressing block and the locking handle.

[0017] The pressing block is an L-shaped component made of nylon.

[0018] The air inlet end of the positioning block is connected to the air pipe joint, and a second sealing ring is arranged between the air inlet end of the positioning block and the air pipe joint.

[0019] The utility model discloses an air tightness test air intake tool for an automobile electric power steering device, which can ensure that there is no need to disassemble or assemble the air vent valve when performing the air tightness test air intake, thereby simplifying the air tightness test operation process, improving work efficiency, and enhancing product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] This specification includes the following drawings, which show the following contents:

[0021] Figure 1 It is a structural schematic diagram of an airtight air intake tooling for an automobile electric power steering device;

[0022] Figure 2 It is a structural schematic diagram of the airtight air intake tooling for assembling the electric power steering gear of an automobile;

[0023] Figure 3 yes Figure 2 Middle AA section view;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the medium airtight air intake method;

[0025] Figure 5 This is the front view of the airtight air intake tooling for the electric power steering of an automobile;

[0026] Figure 6 yes Figure 5 Middle BB section view;

[0027] Figure 7 It is a top view of the airtight air intake tooling for the electric power steering of an automobile;

[0028] Figure 8 This is an exploded view of the parts of the airtight air intake tooling for the electric power steering of an automobile;

[0029] The markings in the figure are: 1. Positioning block; 2. Positioning sleeve; 3. First sealing ring; 4. Hexagon socket bolt; 5. Pressure block; 6. Adjustment gasket; 7. Locking sleeve; 8. Locking handle; 9. Second sealing ring; 10. Air pipe joint; 11. Air pipe; 1201. Automobile electric power steering gear; 1202. Breathing valve; 1203. Breathing membrane; 1204. Integrated machine housing; 1205. Integrated machine end cover; 13. Air intake tooling. DETAILED DESCRIPTION

[0030] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0031] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0032] like Figures 1 to 8 As shown, the utility model provides an air tightness test air intake tool for an automobile electric power steering device, comprising a positioning block 1, a positioning assembly arranged on the positioning block 1 and used to form a sealed space with an integrated machine housing, a pressing block 5 movably arranged on the positioning block 1 and used to contact the integrated machine end cover, and an operating mechanism for controlling the pressing block 5 to move linearly, and the pressing block 5 and the positioning assembly are arranged relative to each other.

[0033] The positioning assembly includes a positioning sleeve 2 arranged on the positioning block 1 and a first sealing ring 3 arranged on the positioning sleeve 2 and used to contact the integrated machine housing. The positioning sleeve 2 is a hollow component and is used to be sleeved on the air valve 1202 of the automobile electric power steering 1201 during testing.

[0034] The first sealing ring 3 is an O-type sealing ring.

[0035] The outer diameter of the positioning sleeve 2 is interference fit with the first countersunk hole provided on the positioning block 1 .

[0036] The operating mechanism comprises a locking handle 8 connected to the pressing block 5. A locking sleeve 7 is arranged on the positioning block 1. The locking handle 8 and the locking sleeve 7 are threadedly connected.

[0037] One end of the locking handle 8 is connected to the pressing block 5 via the hexagon socket bolt 4, and the other end surface of the locking handle 8 is provided with a knurled pattern.

[0038] A countersunk hole is arranged in the locking handle 8 .

[0039] An adjusting gasket 6 is arranged between the pressing block 5 and the locking handle 8 .

[0040] The pressing block 5 is an L-shaped component made of nylon.

[0041] The air inlet end of the positioning block 1 is connected to the air pipe joint 10 , and a second sealing ring 9 is arranged between the air inlet end of the positioning block 1 and the air pipe joint 10 , and the second sealing ring 9 is an O-type sealing ring.

[0042] Specifically, if Figures 4 to 8 As shown, the positioning block 1 is a concave component, the right end of the positioning block 1 is the air inlet end, the left end face of the positioning block 1 is provided with a first countersunk hole which is interference fit with the outer circle of the positioning sleeve 2, and a second countersunk hole which is arranged in the same axial direction as the first countersunk hole and communicates with the threaded air inlet hole which is screwed with the lower end assembly air pipe joint 10, the second countersunk hole has a smaller aperture than the first countersunk hole, and is arranged on the right side of the first countersunk hole, and is used to limit the assembly position of the positioning sleeve 2. The left end of the positioning block 1 is a locking end, and a through hole which is interference fit with the shaft diameter of the small end of the locking sleeve 7 is arranged in the horizontal direction in the same axial direction as the first countersunk hole and the second countersunk hole at the right end, and the through hole is consistent in size with the first countersunk hole at the right end.

[0043] like Figures 4 to 8 As shown, the positioning sleeve 2 is a hollow component, and the outer diameter of the positioning sleeve 2 is interference fit with the first countersunk hole at the right end of the positioning block 1. The positioning sleeve 2 is arranged on the right side of the positioning block 1, and the left side of the positioning sleeve 2 is provided with a countersunk hole for accommodating the first sealing ring 3. A sealed space is formed by the first sealing ring 3, the positioning sleeve 2 and the end face of the integrated housing 1204 of the automobile electric power steering device, and the first sealing ring 3 is in contact with the end face of the integrated housing 1204.

[0044] like Figures 5 to 8 As shown, the locking sleeve 7 is a stepped shaft component, the right side small end shaft diameter of the locking sleeve 7 is interference fit with the through hole set on the left side of the positioning block 1, and a through hole is set on the axis of the right side small end shaft diameter to be clearance fit with the small end shaft diameter on the locking handle 8, and the locking handle 8 can freely rotate and slide left and right in the through hole of the locking sleeve 7. The left side of the locking sleeve 7 is coaxially arranged with the through hole of the small end shaft diameter to be screwed with the locking handle 8, and the bottom hole diameter of the internal threaded hole is larger than the through hole diameter of the left side of the locking sleeve 7 and the small end shaft diameter, and the locking handle 8 passes through the locking sleeve 7.

[0045] like Figures 5 to 8 As shown, the locking handle 8 is a steel shaft component, and the surface of the large end shaft diameter on the left side of the locking handle 8 is provided with a knurled pattern, which is convenient for holding and rotating the locking handle 8. A countersunk hole is provided in the middle of the locking handle 8 to reduce the weight. The large end shaft diameter on the left side of the locking handle 8 is provided with an external thread for screwing with the internal thread on the locking sleeve 7 in the same linear direction, and the small end shaft diameter is matched with the clearance of the through hole on the locking sleeve 7. The center of the small end shaft diameter on the right side of the locking handle 8 is provided with an internal thread hole for screwing with the hexagon socket bolt 4.

[0046] like Figures 5 to 8 As shown, the pressing block 5 is an L-shaped component made of nylon to prevent the surface of the integrated end cover 1205 of the automobile electric power steering device from being crushed. The integrated end cover 1205 is fixedly mounted on the integrated housing 1204. The pressing block 5 is provided with a countersunk hole for assembling the hexagon socket bolt 4. The hexagon socket bolt 4 passes through the countersunk hole and the gasket 6 is adjusted to fix the pressing block 5 on the right side of the rotary locking handle 8. The assembly gap between the countersunk hole on the pressing block 5 and the hexagon socket bolt 4 is adjusted by adjusting the thickness of the gasket 6 to ensure that the pressing block 5 does not rotate when the rotary locking handle 8 rotates, and can move along the axial direction with the rotary locking handle 8.

[0047] Dynamic working process implementation method of structural scheme:

[0048] The specific operation steps of the utility model are as follows (such as Figures 2 to 8 (shown)

[0049] 1. Put the positioning sleeve 2 on the breathable valve 1202 of the automobile electric power steering gear;

[0050] 2. Rotate the locking handle 8 by hand to move the pressing block 5, and finally press the pressing block 5 on the integrated machine end cover 1205 and clamp it, and the positioning sleeve 2 presses the first sealing ring 3 on the integrated machine housing 1204;

[0051] 3. Press the detection switch on the airtightness test equipment. Figure 4 , the gas enters the automobile electric power steering device 1201 through the breathable valve 1202 and the breathable membrane 1203, and performs three test processes: inflation, balancing, and detection;

[0052] 4. After the test is completed, manually rotate the locking handle 8 in the opposite direction to release the pressure block 5 from the integrated machine end cover 1205, and pull the locking handle 8 backward to the far left.

[0053] 5. Remove the air intake tooling and complete the entire air tightness test process.

[0054] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. Air tightness test air intake tooling for automobile electric power steering, characterized by: It includes a positioning block, a positioning assembly arranged on the positioning block and used to form a sealed space with the integrated machine housing, a movably arranged pressing block used to contact the integrated machine end cover, and an operating mechanism used to control the movement of the pressing block. The pressing block and the positioning assembly are arranged relative to each other.

2. The air tightness test air intake tool for an automotive electric power steering device according to claim 1, characterized in that: The positioning assembly comprises a positioning sleeve arranged on the positioning block and a first sealing ring arranged on the positioning sleeve and used for contacting the integrated machine housing, and the positioning sleeve is a hollow component.

3. The air tightness test air intake tool for an automotive electric power steering device according to claim 2, characterized in that: The first sealing ring is an O-type sealing ring.

4. The air tightness test air intake tool for an automotive electric power steering device according to claim 2, characterized in that: The outer diameter of the positioning sleeve is interference fit with the first countersunk hole arranged on the positioning block.

5. The air tightness test air intake tool for an automotive electric power steering device according to any one of claims 1 to 4, characterized in that: The operating mechanism comprises a locking handle connected to the pressing block, a locking sleeve is arranged on the positioning block, and the locking handle and the locking sleeve are threadedly connected.

6. The air tightness test air intake tool for an automotive electric power steering device according to claim 5, characterized in that: One end of the locking handle is connected to the pressing block through a hexagon socket bolt, and the other end surface of the locking handle is provided with a reticulated knurling.

7. The air tightness test air intake tool for an automotive electric power steering device according to claim 5, characterized in that: A countersunk hole is arranged in the locking handle.

8. The air tightness test air intake tool for an automotive electric power steering device according to claim 5, characterized in that: An adjusting gasket is arranged between the pressing block and the locking handle.

9. The air tightness test air intake tool for an automotive electric power steering device according to any one of claims 1 to 4, characterized in that: The pressing block is an L-shaped component made of nylon.

10. The air tightness test air intake tool for an automotive electric power steering device according to any one of claims 1 to 4, characterized in that: The air inlet end of the positioning block is connected to the air pipe joint, and a second sealing ring is arranged between the air inlet end of the positioning block and the air pipe joint.

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