Screw and screw sleeve assembly for sliding caliper disc brake

Abstract

The utility model discloses a screw and barrel assembly for a sliding caliper disc brake, which relates to the field of brakes and comprises a brake body, a screw is arranged in the brake body, a barrel is mounted at the end of the screw in a threaded manner, a friction plate is fixedly mounted at the end of the barrel, and dustproof mechanisms are arranged on the outer walls of the screw and the barrel. The dustproof mechanism comprises a mounting block fixedly mounted on the outer wall of the brake body, a fixing block is fixedly mounted at the end of the mounting block, a dustproof rubber sleeve is slidably mounted on the inner wall of the mounting block, a loose joint sleeve is fixedly mounted at the end of the dustproof rubber sleeve, and a lubricating mechanism is arranged on the outer wall of the brake body. According to the screw and thread sleeve assembly for the sliding caliper disc brake, dust is effectively prevented from entering and being attached to the outer walls of the screw and the thread sleeve by arranging the dustproof mechanism, the influence of the dust on the response speed of the brake is reduced, the braking safety is guaranteed, and the screw and the thread sleeve are always in a good lubricating environment through the lubricating mechanism; the service life and the working stability of the brake are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake technology field, concretely is screw rod screw bush assembly for sliding caliper disc brake. BACKGROUND

[0002] As the core component of ensuring that mechanical device can decelerate, stop or maintain static, brake plays an extremely important role in many fields such as traffic tools and industrial machinery, in the category of traffic tools, the safety of automobile brake system is very important, and sliding caliper disc brake is a member of automobile brake, effectively guarantees the brake safety of automobile, and screw rod screw bush is an indispensable component in brake.

[0003] In prior art, the Chinese patent with application number CN201921845591.7 discloses a kind of multifunctional integrated electronic hydraulic brake, including caliper body assembly and brake structure assembly;The caliper body assembly is slidably connected with brake structure assembly;The caliper body assembly is equipped with oil inlet hole communicated with wheel cylinder cavity, and the caliper body assembly is equipped with sealing assembly, and the one end of caliper body assembly is equipped with hook claw, and the side of caliper body assembly is equipped with guide pin;The brake structure assembly has motor, screw rod, screw bush, piston and bracket;The piston, screw rod and screw bush are assembled in wheel cylinder cavity, and the screw rod is driven by motor, and the outer periphery of screw rod is connected with screw bush, and the one end of screw bush is equipped with piston;The bracket is straddled on brake disc, and the inner brake block assembly and outer brake block assembly are arranged on both sides of brake disc, with wider vehicle model versatility, improved interchangeability, when used as parking brake, can solve the problem of big drag, improve vehicle power and fuel economy.

[0004] In combination with the above material, the outer wall of screw rod screw bush will accumulate a lot of dust after long time use in prior art, which affects the response speed of brake, affects brake safety, and screw rod bolt needs to be regularly disassembled for lubrication and maintenance, and disassembly is relatively cumbersome, therefore, further improvement is required. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing screw rod screw bush assembly for sliding caliper disc brake to solve the problem that the outer wall of screw rod screw bush will accumulate a lot of dust after long time use in the above background art, which affects the response speed of brake, affects brake safety, and screw rod bolt needs to be regularly disassembled for lubrication and maintenance, and disassembly is relatively cumbersome.

[0006] To achieve the above object, the utility model provides the following technical scheme: screw rod screw bush assembly for sliding caliper disc brake, including brake main part, the inside of brake main part is equipped with screw rod, and the end of screw rod is installed with screw bush in screw thread, and the end of screw bush is fixedly installed with friction plate, and the outer wall of screw rod and screw bush is equipped with dustproof mechanism for preventing dust from entering screw rod and screw bush;

[0007] The dustproof mechanism comprises a mounting block fixedly installed on the outer wall of the brake body, a fixed block fixedly installed at the end of the mounting block, a dustproof rubber sleeve slidingly installed on the inner wall of the mounting block, and an articulated sleeve fixedly installed at the end of the dustproof rubber sleeve.

[0008] Further, the length of the mounting block corresponds to the activity range of the screw rod and the screw sleeve, and the inner diameter of the mounting block is larger than the outer diameter of the screw sleeve.

[0009] Further, the dustproof rubber sleeve is a corrugated rubber sleeve, the dustproof sleeve is located between the mounting block and the screw sleeve, the length of the dustproof rubber sleeve corresponds to the mounting block, and the end section of the dustproof rubber sleeve in abutment with the fixed block is hexagonal.

[0010] Further, the fixed block corresponds to the mounting block, the cross section of the fixed block is T-shaped, a fixed groove corresponding to the end of the dustproof rubber sleeve is formed in the outer wall of the end of the fixed block, and a through groove corresponding to the screw rod is formed in the center of the fixed block.

[0011] Further, the end of the mounting block is provided with an articulated block through bolts, a through groove corresponding to the screw sleeve is formed in the outer wall of the articulated block, and the outer diameter of the articulated block corresponds to the outer diameter of the mounting block.

[0012] Further, the lubricating mechanism comprises a lubricating pump and an oil tank fixedly installed on the outer wall of the brake, an oil inlet pipe and a connecting pipe are arranged at the end of the lubricating pump, and an oil return pipe is arranged at the end of the oil tank.

[0013] Further, the oil tank is provided with lubricating oil, one end of the connecting pipe is connected with the oil tank, and the other end of the connecting pipe is connected with the lubricating pump.

[0014] Further, one end of the oil inlet pipe is connected with the lubricating pump, the other end of the oil inlet pipe is in communication with the inside of the dustproof rubber sleeve, one end of the oil return pipe is in communication with the inside of the dustproof rubber sleeve, and the other end of the oil return pipe is in communication with the oil tank.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The screw rod and screw sleeve assembly of the sliding caliper disc brake is provided with a dustproof mechanism, which can effectively prevent dust from entering the outer wall of the screw rod and screw sleeve, the mounting block cooperates with the fixed block to provide a stable mounting base for the dustproof rubber sleeve, and the length of the mounting block corresponds to the movement range of the screw rod and screw sleeve, so that the dustproof rubber sleeve can fully cover the movement area, the dustproof rubber sleeve is designed in a corrugated rubber sleeve, which has good flexibility and can stretch and contract with the movement of the screw rod and screw sleeve, and is tightly attached between the mounting block and the screw sleeve, and the one end of the dustproof rubber sleeve is hexagonal and attached to the fixed block, so that the sealing performance is further improved, dust is effectively prevented from entering, and the influence of dust on the response speed of the brake is greatly reduced, and the braking safety is ensured.

[0017] Further, the lubrication of the screw rod and screw sleeve is more convenient and efficient through the lubrication mechanism, the lubrication pump, the oil tank, the oil inlet pipe, the oil return pipe and the connecting pipe cooperate with each other, the oil tank stores lubricating oil, the lubrication pump draws lubricating oil from the oil tank through the connecting pipe, and the lubricating oil is delivered to the inside of the dustproof rubber sleeve through the oil inlet pipe, so that the screw rod and screw sleeve are always in a good lubricating environment during work, and at the same time, the oil return pipe returns the excess lubricating oil accumulated when the screw rod and screw sleeve stretch and contract to the oil tank, so that the lubricating oil is recycled, the screw rod and screw sleeve can be continuously lubricated without being regularly disassembled, the maintenance workload and complexity are greatly reduced, and the service life and working stability of the brake are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a brake section structure schematic view of the utility model;

[0020] Figure 3 It is a mounting block section structure schematic view of the utility model;

[0021] Figure 4 It is a dustproof mechanism structure schematic view of the utility model;

[0022] Figure 5 It is a dustproof rubber sleeve structure schematic view of the utility model;

[0023] Figure 6 It is a screw rod and screw sleeve structure schematic view of the utility model.

[0024] In the drawing: 1, brake main body; 2, screw rod; 3, screw sleeve; 4, friction plate; 5, mounting block; 501, fixed block; 502, fixed groove; 6, dustproof rubber sleeve; 601, movable block; 7, lubrication pump; 701, oil tank; 702, oil inlet pipe; 703, oil return pipe; 704, connecting pipe. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0026] Embodiment one: please refer to Figures 1-6 The utility model provides the following technical scheme: the screw rod screw bush assembly for sliding caliper disc brake, including brake main body 1, brake main body 1 inside is equipped with screw rod 2, and screw rod 2 end portion is installed with screw bush 3 in screw thread, and screw bush 3 end portion is fixedly installed with friction plate 4, and the outer wall of screw rod 2 and screw bush 3 is equipped with dustproof mechanism for dustproof to screw rod 2 and screw bush 3, and the dustproof mechanism includes the mounting block 5 fixedly installed on the outer wall of brake main body 1, and the fixed block 501 is fixedly installed at the end of mounting block 5, and the dustproof rubber sleeve 6 is slidably installed in the inner wall of mounting block 5, and the dustproof rubber sleeve 6 end portion is fixedly installed with the loose sleeve, and the length of mounting block 5 corresponds to the movement range of screw rod 2 and screw bush 3, and the inner diameter of mounting block 5 is greater than the outer diameter of screw bush 3, and the dustproof rubber sleeve 6 is corrugated rubber sleeve, and the dustproof sleeve is located between mounting block 5 and screw bush 3, and the length of dustproof rubber sleeve 6 corresponds to mounting block 5, and the end section of dustproof rubber sleeve 6 and fixed block 501 is inlaid and is designed as hexagonal, and fixed block 501 corresponds to mounting block 5, and the section of fixed block 501 is designed as T, and the outer wall of fixed block 501 end portion is provided with fixed groove 502 corresponding to the end of dustproof rubber sleeve 6, and the center position of fixed block 501 is provided with through groove corresponding to screw rod 2, and the end of mounting block 5 is provided with loose block 601 through bolt, and the outer wall of loose block 601 is provided with through groove corresponding to screw bush 3, and the outer diameter of loose block 601 corresponds to the outer diameter of mounting block 5.

[0027] When the end portion driving device of screw rod 2 drives screw rod 2 to rotate, the dustproof mechanism plays a key role, mounting block 5 is fixed on the outer wall of brake main body 1, and its length corresponds to the movement range of screw rod 2 and screw bush 3, which surrounds the dust area that may contact screw rod 2 and screw bush 3, fixed block 501 is installed at the end of mounting block 5, which provides a stable connection point for dustproof rubber sleeve 6, dustproof rubber sleeve 6 adopts corrugated rubber sleeve material, which can flexibly stretch and shrink with the movement of screw rod 2 and screw bush 3, when screw rod 2 and screw bush 3 move, dustproof rubber sleeve 6 deforms accordingly, and always keeps closely inlaid between mounting block 5 and screw bush 3, the hexagonal section of rubber sleeve end closely inlaid fixed block 501, which further enhances the sealing performance, effectively blocks the dust from the outside into the movement area of screw rod 2 and screw bush 3, so as to ensure that its outer wall will not accumulate dust, and maintain the high response speed of brake.

[0028] In the embodiment one, the brake body 1 is provided with a lubricating mechanism for lubricating the screw rod 2 and the screw sleeve 3, the lubricating mechanism comprises a lubricating pump 7 and an oil storage tank 701, the lubricating pump 7 is fixedly installed on the outer wall of the brake body 1, the lubricating pump 7 is provided with an oil inlet pipe 702 and a connecting pipe 704 at the end, the oil storage tank 701 is provided with an oil return pipe 703 at the end, the oil storage tank 701 is internally provided with lubricating oil, one end of the connecting pipe 704 is connected with the oil storage tank 701, and the other end of the connecting pipe 704 is connected with the lubricating pump 7, one end of the oil inlet pipe 702 is connected with the lubricating pump 7, and the other end of the oil inlet pipe 702 is communicated with the inside of the dustproof rubber sleeve 6, one end of the oil return pipe 703 is communicated with the inside of the dustproof rubber sleeve 6, and the other end of the oil return pipe 703 is communicated with the oil storage tank 701.

[0029] The lubricating mechanism provides continuous and stable lubrication for the screw rod 2 and the screw sleeve 3, the oil storage tank 701 is used as a storage container of lubricating oil and is filled with lubricating oil, the lubricating pump 7 is started to draw lubricating oil from the oil storage tank 701 through the connecting pipe 704, and the lubricating oil is transported to the inside of the dustproof rubber sleeve 6 along the oil inlet pipe 702 through pressure, since the dustproof rubber sleeve 6 wraps the screw rod 2 and the screw sleeve 3, the lubricating oil can uniformly cover the surfaces of the screw rod 2 and the screw sleeve 3, so that the screw rod 2 and the screw sleeve 3 are always in a good lubrication state during the working process, when the screw rod 2 and the screw sleeve 3 are in the extension and retraction movement, some lubricating oil is accumulated, at this time, the oil return pipe 703 plays a role in guiding the excess lubricating oil to flow back to the oil storage tank 701, in this way, the sufficient lubrication effect is ensured, and the recycling of the lubricating oil is realized, so that the manual lubrication operation of disassembling the screw rod 2 and the screw sleeve 3 is not needed, the maintenance efficiency is greatly improved, and the service life and the working stability of the brake are prolonged.

[0030] In the description of the utility model, it needs to explain that, unless there is definite stipulation and limitation, the term "connects", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connects, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A screw sleeve assembly for a sliding caliper disc brake, comprising a brake body (1), a screw rod (2) inside the brake body (1), a screw sleeve (3) threadedly mounted at the end of the screw rod (2), and a friction plate (4) fixedly mounted at the end of the screw sleeve (3), a dustproof mechanism provided on the outer walls of the screw rod (2) and the screw sleeve (3) for preventing dust from entering the screw rod (2) and the screw sleeve (3); characterized in that The dustproof mechanism comprises a mounting block (5) fixedly mounted on the outer wall of the brake body (1), a fixed block (501) fixedly mounted at the end of the mounting block (5), a dustproof rubber sleeve (6) slidingly mounted on the inner wall of the mounting block (5), and a loose sleeve fixedly mounted at the end of the dustproof rubber sleeve (6). The outer wall of the brake body (1) is provided with a lubricating mechanism for lubricating the screw rod (2) and the screw sleeve (3).

2. The screw and sleeve assembly for a sliding calliper disc brake according to claim 1, characterized in that: The length of the mounting block (5) corresponds to the movement range of the screw rod (2) and the screw sleeve (3), and the inner diameter of the mounting block (5) is greater than the outer diameter of the screw sleeve (3).

3. The screw and sleeve assembly for a sliding calliper disc brake according to claim 1, characterized in that: The dustproof rubber sleeve (6) is a corrugated rubber sleeve, and the dustproof sleeve is located between the mounting block (5) and the screw sleeve (3). The length of the dustproof rubber sleeve (6) corresponds to the length of the mounting block (5). The cross section of one end of the dustproof rubber sleeve (6) is hexagonal and is in close contact with the fixed block (501).

4. The screw and sleeve assembly for a sliding calliper disc brake according to claim 1, characterized in that: The fixed block (501) is arranged corresponding to the mounting block (5), and the cross section of the fixed block (501) is T-shaped. A fixed groove (502) corresponding to the end of the dustproof rubber sleeve (6) is formed in the outer wall of the end of the fixed block (501), and a through groove corresponding to the screw rod (2) is formed in the center of the fixed block (501).

5. The screw and sleeve assembly for a sliding calliper disc brake according to claim 1, characterized in that: The end of the mounting block (5) is provided with a loose block (601) through bolts, and the outer wall of the loose block (601) is provided with a through groove corresponding to the screw sleeve (3). The outer diameter of the loose block (601) corresponds to the outer diameter of the mounting block (5).

6. The screw and sleeve assembly for a sliding calliper disc brake according to claim 1, characterized in that: The lubricating mechanism comprises a lubricating pump (7) and an oil tank (701) fixedly mounted on the outer wall of the brake. The end of the lubricating pump (7) is provided with an oil inlet pipe (702) and a connecting pipe (704), and the end of the oil tank (701) is provided with an oil return pipe (703).

7. The screw-socket assembly for a sliding calliper disc brake according to claim 6, characterized in that: The oil tank (701) is filled with lubricating oil. One end of the connecting pipe (704) is connected to the oil tank (701), and the other end of the connecting pipe (704) is connected to the lubricating pump (7).

8. The screw and sleeve assembly for a sliding calliper disc brake according to claim 6, characterized in that: One end of the oil inlet pipe (702) is connected to the lubricating pump (7), and the other end of the oil inlet pipe (702) is connected to the inside of the dustproof rubber sleeve (6). One end of the oil return pipe (703) is connected to the inside of the dustproof rubber sleeve (6), and the other end of the oil return pipe (703) is connected to the oil tank (701).

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