Pressing block assembly

Abstract

The utility model discloses a pressing block assembly which comprises a pressing plug, a pressing block and a gasket used for abutting against a steering lead screw, a spring is arranged between the pressing plug and the pressing block, the spring is in a compressed state in an installation state, the gasket is fixedly arranged at the end, away from the pressing plug, of the pressing block, and the gasket is made of flexible nonmetal materials. The pressing plug is used for being fixed to the steering shell, the pressing block abuts against the steering lead screw through the gasket, the gasket is made of flexible materials, the impact noise can be effectively reduced, the gasket can be made of plastic or rubber, and the impact noise of the plastic / rubber and metal is obviously smaller than the impact noise of metal and metal.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile steering gear, specifically relates to a pressing block assembly. BACKGROUND

[0002] The steering gear adjusting plug is mainly used for pressing the rack pressing block, and can be used for adjusting the gear rack gap. In order to meet the lower gear rack friction, a certain amount of gap needs to be ensured. But at the same time, in order to ensure excellent noise performance, the gap needs to be controlled as small as possible, but the existing adjusting plug pressing block is mostly made of metal (zinc alloy or steel), the strength is ensured, but when the vehicle passes through the bumpy road, the road excitation is transmitted through the pull rod and the rack, which will make the rack pressing block hit the adjusting plug end face, and the impact of the metal rack pressing block and the metal adjusting plug end face will generate noise. SUMMARY

[0003] In view of the technical problem that the impact of the metal rack pressing block and the metal adjusting plug end face generates noise, the utility model provides a pressing block assembly, the pressing block is abutted with the steering screw rod through the gasket, and the gasket of flexible material can effectively reduce the impact noise.

[0004] The technical scheme adopted by the utility model is as follows: a pressing block assembly, comprising a plug, a pressing block and a gasket for abutting against a steering screw rod, a spring is arranged between the plug and the pressing block, the spring is in a compressed state in the installed state, the gasket is fixedly arranged at the end of the pressing block away from the plug, and the gasket is made of flexible non-metal material.

[0005] The plug is used for being fixed on the steering housing, the pressing block is abutted with the steering screw rod through the gasket, the gasket of flexible material can effectively reduce the impact noise, the material of the gasket can be plastic or rubber, and the impact noise of plastic / rubber and metal is obviously smaller than that of metal and metal.

[0006] Optionally, the pressing block is provided with a first groove, the plug is provided with a second groove, the first groove and the second groove are correspondingly arranged to form a cavity for accommodating the spring, and the spring is in a compressed state in the cavity.

[0007] Optionally, the end of the pressing block away from the first groove is provided with an arc-shaped groove, and the gasket is attached to the surface of the arc-shaped groove.

[0008] The arc-shaped groove is matched with the outer peripheral wall of the steering screw rod, and perfect fitting is achieved.

[0009] Optionally, one side of the gasket for abutting against the steering screw rod is uniformly provided with a plurality of grooves or protrusions.

[0010] The sink or the protrusion can more evenly distribute stress, reduce local stress concentration, and thus improve the overall contact performance of the liner, and effectively compensate for the gap change between the steering screw and the gear shaft.

[0011] Optionally, the arc-shaped groove is provided with a limiting groove extending along the axial direction of the pressing block, the liner is provided with a limiting column in interference fit with the limiting groove, the diameter of the limiting groove is smaller than the diameter of the limiting column, and the limiting groove is not communicated with the first groove.

[0012] The limiting column can be integrally formed with the liner and is made of flexible material, the diameter of the limiting groove is smaller than the diameter of the limiting column, the limiting column is pressed and deformed to be pressed into the limiting groove, the limiting column and the limiting groove are in interference fit, and the liner is prevented from being pulled out.

[0013] Optionally, the pressing plug comprises a pressing cover and a plug body connected with the pressing cover, the diameter of the plug body is smaller than the diameter of the pressing cover, the plug body is provided with the second groove, and the outer circumferential wall of the plug body is provided with an external thread for fit with the inner circumferential wall of the shell.

[0014] The plug body is fastened and fit with the inner circumferential wall of the shell through the external thread, and the pressing cover is pressed on the end face of the through hole of the shell to limit.

[0015] Optionally, the outer circumferential wall of the pressing block is provided with a first ring groove in which a first wear-resistant ring is mounted, and the diameter of the first wear-resistant ring is greater than the depth of the first ring groove.

[0016] The first wear-resistant ring protrudes from the first ring groove, so that the first wear-resistant ring is in contact with the inner wall of the shell to avoid abnormal sound caused by metal impact between the shell and the pressing block. The number of the first ring grooves can be multiple.

[0017] Optionally, the end face of the end of the plug body away from the pressing cover is provided with a second ring groove, a second wear-resistant ring is arranged between the plug body and the pressing block, and the diameter of the second wear-resistant ring is greater than the depth of the second ring groove.

[0018] The second wear-resistant ring avoids abnormal sound caused by impact between the plug body and the pressing block, and the materials of the first wear-resistant ring and the second wear-resistant ring are rubber.

[0019] The pressing plug is used for being fixed on the steering shell, the pressing block abuts against the steering screw through the liner, the liner made of flexible material can effectively reduce impact noise, the material of the liner can be plastic or rubber, and the impact noise of plastic / rubber and metal is obviously smaller than that of metal and metal. The sink or the protrusion can more evenly distribute stress, reduce local stress concentration, and thus improve the overall contact performance of the liner, and effectively compensate for the gap change between the steering screw and the gear shaft. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1The structure schematic view of the briquetting assembly is provided for the embodiment of the utility model.

[0021] Fig. 2 The second groove of the briquetting assembly is provided for the embodiment of the utility model.

[0022] Fig. 3 The first groove of the briquetting assembly is provided for the embodiment of the utility model.

[0023] The marks in each drawing are as follows: 1, plug; 11, cover; 12, plug body; 121, second groove; 122, external thread; 123, second ring groove; 2, briquetting block; 21, first groove; 22, arc-shaped groove; 23, limiting groove; 24, first ring groove; 3, gasket; 31, recess; 32, limiting column; 4, spring; 5, first wear-resistant ring; 6, second wear-resistant ring. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the drawings and embodiments.

[0025] As Figs. 1 to 3 shown, the embodiment discloses a briquetting assembly, which comprises a plug 1, a briquetting block 2 and a gasket 3 used for abutting against a steering screw rod, a spring 4 is arranged between the plug 1 and the briquetting block 2, the spring 4 is in a compressed state in the installed state, the gasket 3 is fixedly arranged at the end of the briquetting block 2 away from the plug 1, and the gasket 3 is made of flexible non-metal material. The plug 1 is used for being fixed on a steering housing, the briquetting block 2 abuts against the steering screw rod through the gasket 3, the gasket 3 made of flexible material can effectively reduce the impact noise, and the material of the gasket 3 can be plastic or rubber; the impact noise of plastic / rubber and metal is obviously smaller than that of metal and metal.

[0026] As Fig. 3 shown, the briquetting block 2 is provided with a first groove 21, the plug 1 is provided with a second groove 121, the first groove 21 and the second groove 121 are correspondingly arranged to form a cavity for accommodating the spring 4, and the spring 4 is in a compressed state in the cavity.

[0027] As Fig. 2 shown, the end of the briquetting block 2 away from the first groove 21 is provided with an arc-shaped groove 22, and the gasket 3 is attached to the surface of the arc-shaped groove 22. The arc-shaped groove 22 is matched with the outer peripheral wall of the steering screw rod, and perfect fitting is achieved.

[0028] As Fig. 2As shown, the gasket 3 is uniformly distributed with a plurality of grooves 31 or protrusions on the side against the steering screw. In this embodiment, the gasket 3 is uniformly distributed with a plurality of grooves 31, which can reduce local stress concentration, thereby improving the overall contact performance and effectively compensating for the gap changes between the steering screw and the gear shaft. Compared with the prior art, the end face of the pressing block is flat, and the grease between the pressing block and the steering screw is easily scraped off by the reciprocating steering screw. The grooves 31 also have the function of storing grease, solving the noise problem caused by the failure of lubrication on the surface of the rack when the gap is very small.

[0029] In this embodiment, as shown in Fig. 2 The arc-shaped groove 22 is provided with a limiting groove 23 extending in the axial direction of the pressing block 2, the gasket 3 is provided with a limiting column 32 in interference fit with the limiting groove 23, the diameter of the limiting groove 23 is smaller than the diameter of the limiting column 32, and the limiting groove 23 is not in communication with the first groove 21. The limiting column 32 can be integrally formed with the gasket 3 and is also of flexible material. The diameter of the limiting groove 23 is smaller than the diameter of the limiting column 32, so that the limiting column 32 is pressed and deformed to be pressed into the limiting groove 23, the limiting column 32 is connected in interference fit with the limiting groove 23, and the gasket 3 is prevented from coming out.

[0030] As shown in Fig. 2 The plug 1 includes a cover 11 and a plug body 12 connected with the cover 11. The diameter of the plug body 12 is smaller than the diameter of the cover 11. The plug body 12 is provided with the second groove 121, and the outer peripheral wall of the plug body 12 is provided with an external thread 122 for cooperation with the inner peripheral wall of the shell. The plug body 12 is fastened and cooperated with the inner peripheral wall of the shell through the external thread 122, and the cover 11 is pressed on the end face of the through hole of the shell, thereby playing a limiting role.

[0031] As shown in Fig. 2 and Fig. 3 The outer peripheral wall of the pressing block 2 is provided with a first ring groove 24 in which a first wear-resistant ring 5 is installed. The diameter of the first wear-resistant ring 5 is greater than the depth of the first ring groove 24. The first wear-resistant ring 5 protrudes from the first ring groove 24, so that the first wear-resistant ring 5 is in contact with the inner wall of the shell, thereby avoiding abnormal noise caused by metal impact between the shell and the pressing block 2. In this embodiment, the number of first ring grooves 24 can be multiple.

[0032] As shown in Fig. 2 Fig. 3 The end face of the end of the plug body 12 away from the cover 11 is provided with a second ring groove 123, and the second wear-resistant ring 6 is arranged between the plug body 12 and the pressing block 2. The diameter of the second wear-resistant ring 6 is greater than the depth of the second ring groove 123. The second wear-resistant ring 6 avoids abnormal noise caused by collision between the plug body 12 and the pressing block 2. The materials of the first wear-resistant ring 5 and the second wear-resistant ring 6 are rubber.

[0033] It can be understood that the specific embodiments described above are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description. Multiple technical solutions in the same embodiment and multiple technical solutions of different embodiments can be arranged and combined to form new technical solutions without contradiction or conflict. Any equivalent structural transformation using the contents of the utility model specification and drawings, direct or indirect application in other related technical fields, are also included in the protection scope of the utility model.

Claims

1. A briquetting assembly characterized in that, The invention relates to a compression plug, a compression block and a gasket for abutting against a steering screw, wherein a spring is arranged between the compression plug and the compression block, the spring is in a compressed state in the installed state, the gasket is fixedly arranged on the end of the compression block away from the compression plug, and the gasket is made of flexible non-metallic material.

2. The briquette assembly of claim 1, wherein, The compression block is provided with a first recess, the compression plug is provided with a second recess, the first recess and the second recess are coaxially arranged to form a cavity for accommodating the spring, and the spring is in a compressed state in the cavity.

3. The briquette assembly of claim 2, wherein, The end of the compression block away from the first recess is provided with an arc-shaped groove, and the gasket is attached to the surface of the arc-shaped groove.

4. The briquette assembly of claim 1, wherein, The side of the gasket for abutting against the steering screw is uniformly provided with a plurality of grooves or protrusions.

5. The briquette assembly of claim 3, wherein, The arc-shaped groove is provided with a limiting groove extending in the axial direction of the compression block, the gasket is provided with a limiting column in interference fit with the limiting groove, the diameter of the limiting groove is smaller than the diameter of the limiting column, and the limiting groove is not in communication with the first recess.

6. The briquette assembly of claim 2, wherein, The compression plug comprises a compression cover and a plug body connected with the compression cover, the diameter of the plug body is smaller than the diameter of the compression cover, the plug body is provided with the second recess, and the outer peripheral wall of the plug body is provided with external threads for cooperating with the inner peripheral wall of the shell.

7. The briquette assembly of claim 1, wherein, The outer peripheral wall of the compression block is provided with a first ring groove in which a first wear-resistant ring is arranged, and the diameter of the first wear-resistant ring is greater than the depth of the first ring groove.

8. The briquette assembly of claim 6, wherein, The end face of the end of the plug body away from the compression cover is provided with a second ring groove, a second wear-resistant ring is arranged between the plug body and the compression block, and the diameter of the second wear-resistant ring is greater than the depth of the second ring groove.

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