Muddy water test tool for sealing steering gear with firewall

Abstract

The utility model relates to the technical field of machinery, in particular to a muddy water test tool for sealing a steering gear with a firewall, which comprises a tool body in a cover shape, a bulge structure is arranged in the center of the top of the tool body, and a through hole penetrating up and down is arranged in the center of the bulge structure. A through hole is formed in the tool body, the upper edge and the lower edge of the through hole are each provided with a lip edge, a plurality of inclined face reinforcing ribs are evenly arranged on the top plane of the tool body, a plurality of vertically-arranged side face reinforcing ribs are arranged on the side face of the tool body, and an annular rib and a plurality of inner reinforcing ribs are arranged on the top face in the tool body. Compared with the prior art, the muddy water test tool is designed, in a muddy water test box, a sealing environment of a whole vehicle firewall is provided for a steering engine with a firewall seal, the upper lip edge and the lower lip edge are in interference fit with the input shaft of the steering engine, a good sealing effect is guaranteed, the input shaft and a sealing cap are effectively protected, meanwhile, rotation along with the input shaft is achieved, and the service life of the steering engine is prolonged. And different durability cycle requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a mud and water testing fixture for a steering gear with a firewall seal. Background Technology

[0002] There are two existing designs for the steering gear's sealing cap, one of which includes a vehicle firewall seal, such as... Figure 1 As shown, the sealing method of the steering gear sealing cap 1 in contact with the vehicle firewall 2 is as follows.

[0003] The steering gear requires a mud and water test during DV testing. During this test, the nozzle sprays water onto the input shaft and the sealing cap. However, the mud and water test chamber lacks the sealing connection between the vehicle firewall and the steering gear, resulting in an inconsistency between the test environment and the vehicle's overall environment.

[0004] Currently, during mud and water testing, plastic bags are used to wrap the sealing cap. However, plastic bags have certain limitations: the intermediate shaft needs to pass through them, resulting in a poor seal; furthermore, during durability testing, the plastic bags may break as the input shaft rotates.

[0005] Therefore, it is necessary to design a mud and water test fixture for steering gear with firewall seal to provide a sealed environment for the entire vehicle firewall, effectively prevent mud and water from spraying onto the input shaft, and at the same time be able to rotate with the input shaft to meet the durability requirements of mud and water test. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mud and water testing fixture for a steering gear with a firewall seal, so as to provide a sealed environment for the entire vehicle firewall, effectively preventing mud and water from spraying onto the input shaft, while being able to rotate with the input shaft to meet the durability requirements of mud and water testing.

[0007] To achieve the above objectives, this utility model provides a mud and water testing fixture for a steering gear with a firewall seal. The fixture includes a fixture body, which is cap-shaped. A raised structure is located at the center of the top of the fixture body, with a through hole running vertically through the center of the raised structure. A lip is provided along the upper and lower edges of the through hole. Several inclined reinforcing ribs are evenly arranged on the top plane of the fixture body. One end of each inclined reinforcing rib connects to the bottom of the raised structure, and the other end extends to the edge of the top plane of the fixture body. Several vertically arranged side reinforcing ribs are provided on the sides of the fixture body. Several internal reinforcing ribs are provided along the inner top edge of the fixture body. The upper surface of each internal reinforcing rib connects to the inner top surface of the fixture body, and the outer surface of each internal reinforcing rib connects to the inner side surface of the fixture body. A ring-shaped rib is provided on the inner top surface of the fixture body and surrounds the lower edge of the through hole.

[0008] The tooling body, protruding structure, inclined reinforcing rib, side reinforcing rib, internal reinforcing rib, and annular rib are an integral structure.

[0009] The aforementioned inclined reinforcing ribs and internal reinforcing ribs are both 12 in number.

[0010] The aforementioned side reinforcing ribs consist of 8 ribs.

[0011] The top of the inclined reinforcing rib is inclined, and the height near the protruding structure is greater than the height near the edge of the tooling body.

[0012] The through hole is interference-fitted with the input shaft of the steering gear, and the upper and lower lips are tightly fitted with the input shaft of the steering gear. The tooling body covers the sealing cap of the steering gear.

[0013] Compared with existing technologies, this invention features a mud and water testing fixture. Within the mud and water testing chamber, it provides a sealing environment equivalent to the vehicle's firewall for the steering gear with a firewall seal. The upper and lower lips are interference-fitted with the steering gear input shaft to ensure a good sealing effect, effectively protecting the input shaft and the sealing cap. Simultaneously, it allows the steering gear to rotate following the input shaft, meeting different durability cycle requirements. This invention is simple to assemble, does not alter the original assembly of the steering gear, and does not affect its performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the sealing between the steering gear sealing cap and the vehicle firewall.

[0015] Figure 2 This is an isometric view of the present invention.

[0016] Figure 3 This is a cross-sectional view of the present invention.

[0017] Figure 4 This is a bottom view of the present invention.

[0018] Figure 5 This is a schematic diagram of the present invention assembled with a steering gear.

[0019] Figure 6 This is a cross-sectional view of the present invention assembled with a steering gear. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] See Figure 2 , Figure 3 and Figure 4This utility model is a mud and water testing fixture for a steering gear with a firewall seal. It includes a fixture body 31, which is cap-shaped. A raised structure 32 is provided at the center of the top of the fixture body 31. A through hole 321 is provided in the center of the raised structure 32. A lip 322 is provided at the upper and lower edges of the through hole 321. Several inclined reinforcing ribs 33 are evenly arranged on the top plane of the fixture body 31. One end of the inclined reinforcing rib 33 is connected to the bottom of the raised structure 32, and the other end of the inclined reinforcing rib 33 extends to the edge of the top plane of the fixture body 31. Several vertically arranged side reinforcing ribs 34 are provided on the side of the fixture body 31. Several internal reinforcing ribs 35 are provided on the inner top edge of the fixture body 31. The upper surface of the internal reinforcing ribs 35 is connected to the inner top surface of the fixture body 31, and the outer surface of the internal reinforcing ribs 35 is connected to the inner side of the fixture body 31. An annular rib 36 is provided on the inner top surface of the fixture body 31 and surrounds the lower edge of the through hole 321.

[0022] The tooling body 31, the protruding structure 32, the inclined reinforcing rib 33, the side reinforcing rib 34, the internal reinforcing rib 35, and the annular rib 36 are an integral structure, which is processed by injection molding. The pre-processed rubber and plastic are heated to a molten state and then injected into the mold, where they are vulcanized under high pressure.

[0023] The mud and water test fixture 3 is made of HNBR material, which has good heat resistance, oil resistance, corrosion resistance and dynamic fatigue resistance.

[0024] Preferably, there are 12 inclined reinforcing ribs 33 and 12 internal reinforcing ribs 35. There are 8 side reinforcing ribs 34.

[0025] The top of the inclined reinforcing rib 33 is inclined, and the height near the protruding structure 32 is greater than the height near the edge of the tooling body 31. The inclined reinforcing rib 33 can improve the strength of the structure and play a guiding role, so that the mud and water sprayed onto the surface of the inclined reinforcing rib 33 can flow to the edge of the tooling body 31.

[0026] Internal reinforcing ribs 35 and side reinforcing ribs 34 ensure structural stability and prevent deformation. Circular ribs 36, to a certain extent, prevent mud and water from splashing into the input shaft from the bottom, forming a labyrinthine protective layer.

[0027] See Figure 5 , Figure 6The mud and water testing fixture 3 is fitted onto the input shaft 4. The through hole 321 is interference-fitted with the input shaft 4 of the steering gear, and the upper and lower lips 322 are tightly fitted with the input shaft 4 of the steering gear to increase the interference and provide a sealing effect, preventing mud and water from entering. It also ensures the stability of the assembly between the fixture body 31 and the input shaft 4. The fixture body 31 covers the sealing cap of the steering gear, protecting the input shaft and the sealing cap, and providing a sealed environment for the vehicle's firewall.

[0028] Meanwhile, during the mud and water durability test, the mud and water test fixture 3, as a rotating body, rotates synchronously with the input shaft. The mud and water sprayed onto the fixture will not accumulate on the top surface of the fixture under the action of centrifugal force.

[0029] The structure and fit of the mud and water testing fixture 3 with the input shaft can adopt a standard design to meet the needs of various projects.

[0030] This invention designs a mud and water testing fixture. Within the mud and water testing chamber, it provides a sealing environment equivalent to the vehicle's firewall for the steering gear with a firewall seal. The upper and lower lips are interference-fitted with the steering gear input shaft to ensure a good sealing effect, effectively protecting the input shaft and the sealing cap. Simultaneously, it allows the steering gear to rotate with the input shaft, meeting different durability cycle requirements. This invention is simple to assemble, does not alter the original assembly of the steering gear, and does not affect the steering gear's performance.

Claims

1. A mud and water testing fixture for a steering gear with a firewall seal, comprising a fixture body, characterized in that: The tooling body (31) is cap-shaped. A protruding structure (32) is provided at the center of the top of the tooling body (31). A through hole (321) is provided in the center of the protruding structure (32). A lip (322) is provided on the upper and lower edges of the through hole (321). Several inclined reinforcing ribs (33) are evenly arranged on the top plane of the tooling body (31). One end of the inclined reinforcing rib (33) is connected to the bottom of the protruding structure (32), and the other end of the inclined reinforcing rib (33) extends to the tooling body (31). 1) The edge of the top plane, the side of the tool body (31) is provided with several vertically arranged side reinforcing ribs (34), the edge of the inner top surface of the tool body (31) is provided with several internal reinforcing ribs (35), the upper surface of the internal reinforcing ribs (35) is connected to the inner top surface of the tool body (31), the outer surface of the internal reinforcing ribs (35) is connected to the inner side of the tool body (31), and the annular ribs (36) are set on the inner top surface of the tool body (31) and surround the lower edge of the through hole (321).

2. The mud and water testing fixture for a steering gear with a firewall seal according to claim 1, characterized in that: The tooling body (31), protruding structure (32), inclined reinforcing rib (33), side reinforcing rib (34), internal reinforcing rib (35), and annular rib (36) are an integral structure.

3. The mud and water testing fixture for a steering gear with a firewall seal according to claim 1, characterized in that: The inclined reinforcing ribs (33) and internal reinforcing ribs (35) are both 12 in number.

4. The mud and water testing fixture for a steering gear with a firewall seal according to claim 1, characterized in that: The aforementioned side reinforcing ribs (34) number 8.

5. The mud and water testing fixture for a steering gear with a firewall seal according to claim 1, characterized in that: The top of the inclined reinforcing rib (33) is inclined, and the height near the protruding structure (32) is greater than the height near the edge of the tooling body (31).

6. The mud and water testing fixture for a steering gear with a firewall seal according to claim 1, characterized in that: The through hole (321) is interference-fitted with the input shaft (4) of the steering gear, and the upper and lower lips (322) are tightly fitted with the input shaft (4) of the steering gear. The tooling body (31) covers the sealing cap of the steering gear.

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