Helical gear type automobile brake lash adjustment arm

Abstract

The utility model discloses a helical gear type automobile brake clearance adjusting arm, it includes the shell, the inner surface rotation of shell is connected with the inner tooth surface sleeve, the outer surface fixed connection of inner tooth surface sleeve has the worm wheel, the inner surface rotation of shell is connected with the worm, the right -hand member fixed connection of worm has the limit stop. Through setting the threaded rod, the limit disc, the spring, the nut, the connecting plate, the first protective sheath and the second protective sheath, can cover the opening on the oil filler pipe and the inner hexagonal sleeve, thereby preventing the influence of dust to two, and then facilitate the operation of oil injection and the rotation inner hexagonal sleeve, and through setting the hexagonal insert block, can be covered after the inner hexagonal sleeve to the inner hexagonal sleeve limit, prevent the rotation from the motion of car, through setting the tube and the filter screen, can filter the injected lubricating oil, thereby preventing the transmission of the internal components of shell.

Description

Technical Field

[0001] This utility model relates to the field of clearance adjustment arm technology, and in particular to a helical gear type automotive brake clearance adjustment arm. Background Technology

[0002] In a braking system, brake clearance refers to the gap between the brake shoes or calipers and the brake drum or disc. Proper brake clearance is crucial for the normal operation of the braking system. If the brake clearance is too large, the brake shoes or calipers need to travel a longer distance to contact the brake drum or disc when the brake pedal is depressed, resulting in a prolonged braking response time, affecting braking performance, and potentially even causing brake failure. Conversely, if the brake clearance is too small, it can cause unnecessary friction between the brake shoes or calipers and the brake drum or disc, increasing brake wear and potentially leading to overheating, affecting braking performance and service life. Therefore, helical gear-type brake clearance adjusting arms are used in automotive vehicles.

[0003] However, the existing helical gear type automotive brake clearance adjusting arm still has certain defects. For example, the oil filling hole and the adjusting end of the equipment lack an effective dustproof structure, making it easy to be affected by dust during vehicle operation, which can cause the oil filling hole to become blocked and the adjusting end to be unable to rotate. Secondly, the oil filling port lacks a filter component, which may cause impurities in the lubricating oil to enter the equipment, thereby affecting the transmission of the structure. Utility Model Content

[0004] The purpose of this utility model is to provide a helical gear type automotive brake clearance adjusting arm that can cover the openings on the oil injection pipe and the internal hexagonal sleeve, thereby preventing dust from affecting them, facilitating oil injection and rotation of the internal hexagonal sleeve, and filtering the injected lubricating oil to prevent it from affecting the transmission of the internal components.

[0005] To achieve the above objectives, a helical gear type automotive brake clearance adjusting arm is provided, comprising: The housing has an inner toothed sleeve rotatably connected to its inner surface, a worm gear fixedly connected to the outer surface of the inner toothed sleeve, a worm rotatably connected to the inner surface of the housing, a limit block fixedly connected to the right end of the worm, an internal hexagonal sleeve fixedly connected to the left end of the worm, an adjusting plate fixedly connected to the rear surface of the inner toothed sleeve, a dust cover provided on the front surface of the housing, a screw provided on the front surface of the dust cover, an oil injection pipe provided on the outer surface of the housing, a tubing slidably connected to the inner surface of the oil injection pipe, a filter screen fixedly connected to the inner surface of the tubing, a limit ring fixedly connected to the left end of the tubing, a first threaded hole provided on the outer surface of the limit ring, and a bolt threadedly connected to the inner surface of the first threaded hole.

[0006] A threaded rod is fixedly connected to the outer surface of the outer shell. A limiting plate is fixedly connected to the left end of the threaded rod. A spring is provided on the outer surface of the threaded rod. A nut is threadedly connected to the outer surface of the limiting plate. A connecting plate is slidably connected to the outer surface of the threaded rod. A first protective sleeve is fixedly connected to the lower end of the connecting plate. A second protective sleeve is fixedly connected to the upper end of the connecting plate. A hexagonal insert is fixedly connected to the inner surface of the second protective sleeve.

[0007] According to the aforementioned helical gear type automotive brake clearance adjusting arm, the left end of the oil injection pipe is provided with a limiting groove, and the inner surface of the limiting groove is adapted to the limiting ring.

[0008] According to the aforementioned helical gear type automotive brake clearance adjusting arm, the inner surface of the limiting groove is provided with a second threaded hole, and the inner surface of the second threaded hole is threadedly connected to a bolt.

[0009] According to the aforementioned helical gear type automotive brake clearance adjusting arm, the left end of the spring contacts the connecting plate, and the right end of the spring contacts the outer casing.

[0010] According to the aforementioned helical gear type automotive brake clearance adjusting arm, the left surface of the connecting plate is in contact with the nut.

[0011] According to the aforementioned helical gear type automotive brake clearance adjusting arm, the outer surface of the hexagonal insert is slidably connected to the inner hexagonal sleeve.

[0012] According to the aforementioned helical gear type automotive brake clearance adjusting arm, the second protective sleeve is fitted onto the outer surface of the internal hexagonal sleeve, and the first protective sleeve is fitted onto the outer surface of the oil injection pipe.

[0013] According to the aforementioned helical gear type automotive brake clearance adjusting arm, the outer surface of the limiting block is rotatably connected to the housing, and the worm gear is disposed inside the housing.

[0014] The above-mentioned solution has the following beneficial effects: By setting threaded rod, limit plate, spring, nut, connecting plate, first protective sleeve and second protective sleeve, the openings on the oil injection pipe and the internal hexagonal sleeve can be covered, thereby preventing dust from affecting them, which facilitates the operation of oil injection and rotation of the internal hexagonal sleeve. Furthermore, by setting hexagonal insert, the internal hexagonal sleeve can be limited after being covered, preventing it from rotating due to the movement of the vehicle. By setting up a cylinder and a filter screen, the injected lubricating oil can be filtered, thereby preventing it from affecting the transmission of the internal components of the housing. Furthermore, by setting up a limit ring, a first threaded hole, a bolt, a limit groove, and a second threaded hole, the cylinder and filter screen can be disassembled as a whole, thereby improving practicality.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a helical gear type automotive brake clearance adjusting arm according to the present invention; Figure 2 This is a cross-sectional view of the overall structure of a helical gear type automotive brake clearance adjusting arm according to this utility model; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a partially exploded schematic diagram of a helical gear type automotive brake clearance adjusting arm according to the present invention. Figure 5 This is a partial structural diagram of a helical gear type automotive brake clearance adjusting arm according to the present invention.

[0017] Legend: 1. Outer shell; 2. Internal gear sleeve; 3. Worm gear; 4. Worm; 5. Limiting block; 6. Hexagonal socket sleeve; 7. Adjusting plate; 8. Dust cover; 9. Screw; 10. Oil injection pipe; 11. Tube; 12. Filter screen; 13. Limiting ring; 14. First threaded hole; 15. Bolt; 16. Threaded rod; 17. Limiting disc; 18. Spring; 19. Nut; 20. Connecting plate; 21. First protective sleeve; 22. Second protective sleeve; 23. Hexagonal insert; 24. Limiting groove; 25. Second threaded hole. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] Reference Figure 1-5This utility model discloses a helical gear type automotive brake clearance adjusting arm, comprising: a housing 1; an internal gear sleeve 2 rotatably connected to the inner surface of the housing 1; a worm gear 3 fixedly connected to the outer surface of the internal gear sleeve 2; a worm 4 rotatably connected to the inner surface of the housing 1; a limit block 5 fixedly connected to the right end of the worm 4; an internal hexagonal sleeve 6 fixedly connected to the left end of the worm 4; an adjusting plate 7 fixedly connected to the rear surface of the internal gear sleeve 2; a dust cover 8 provided on the front surface of the housing 1; a screw 9 provided on the front surface of the dust cover 8; an oil injection pipe 10 provided on the outer surface of the housing 1; and a cylindrical tube 11 slidably connected to the inner surface of the oil injection pipe 10. A filter screen 12 is fixedly connected to the inner surface of the tube 11. A limiting ring 13 is fixedly connected to the left end of the tube 11. A first threaded hole 14 is provided on the outer surface of the limiting ring 13. A bolt 15 is threadedly connected to the inner surface of the first threaded hole 14. A limiting groove 24 is provided on the left end of the oil injection pipe 10. The inner surface of the limiting groove 24 is adapted to the limiting ring 13 to facilitate the limiting of the position of the filter screen 12. A second threaded hole 25 is provided on the inner surface of the limiting groove 24. The inner surface of the second threaded hole 25 is threadedly connected to the bolt 15 to facilitate the fixing of the position of the filter screen 12. The outer surface of the limiting block 5 is rotatably connected to the outer shell 1. The worm gear 3 is located inside the outer shell 1.

[0020] A threaded rod 16 is fixedly connected to the outer surface of the outer casing 1. A limiting plate 17 is fixedly connected to the left end of the threaded rod 16. A spring 18 is provided on the outer surface of the threaded rod 16. A nut 19 is threadedly connected to the outer surface of the limiting plate 17. A connecting plate 20 is slidably connected to the outer surface of the threaded rod 16. A first protective sleeve 21 is fixedly connected to the lower end of the connecting plate 20. A second protective sleeve 22 is fixedly connected to the upper end of the connecting plate 20. A hexagonal insert 23 is fixedly connected to the inner surface of the second protective sleeve 22. The left end of the spring 18 is in contact with the connecting plate 20, and the right end of the spring 18 is in contact with the outer casing 1. The left surface of the connecting plate 20 is in contact with the nut 19. The outer surface of the hexagonal insert 23 is slidably connected to the inner hexagonal sleeve 6. The second protective sleeve 22 is sleeved on the outer surface of the inner hexagonal sleeve 6. The first protective sleeve 21 is sleeved on the outer surface of the oil injection pipe 10 for protection of both.

[0021] Working principle: When adjusting the position of the adjusting plate 7, simply rotate the nut 19 along the threaded rod 16. This drives the connecting plate 20, the second protective sleeve 22, and the hexagonal insert 23 to move to the left under the restoring force of the compressed spring 18, thus disengaging the second protective sleeve 22 from the inner hexagonal sleeve 6. Then, rotate the connecting plate 20 around the threaded rod 16 to fully expose the inner hexagonal sleeve 6. Rotating the inner hexagonal sleeve 6 using the hexagonal handle will drive the adjusting plate 7 to rotate around the inner toothed sleeve 2 via the transmission action of the worm gear 4 and worm wheel 3, achieving adjustment. When adding lubricating oil to the inside of the outer casing 1, simply follow the above steps to expose the opening on the oil filling pipe 10, and then inject the lubricating oil into the inside of the outer casing 1 through the opening. Before entering the inside of the outer casing 1, the lubricating oil will be filtered through the filter screen 12 to prevent external dust from affecting the transmission of the internal components. When the filter screen 12 needs to be replaced, simply loosen and... Remove bolt 15, then insert the tube 11 of the new filter screen 12 into the oil injection pipe 10. When the first threaded hole 14 on the limiting ring 13 corresponds to the second threaded hole 25 inside the limiting groove 24, screw in bolt 15 to complete the installation of the new filter screen 12. After the adjustment of the lubricating oil or the adjusting plate 7 is completed, simply rotate the connecting plate 20 again around the threaded rod 16 as the axis to drive the first protective sleeve 21 and the second protective sleeve 22 to the oil injection pipe 10 and the internal hexagonal sleeve 6 respectively. By rotating the nut 19 at the corresponding position, the connecting plate 20 can be moved to the right along the threaded rod 16, thereby allowing the first protective sleeve 21 and the second protective sleeve 22 to be respectively fitted onto the oil injection pipe 10 and the internal hexagonal sleeve 6, thus covering them and achieving dust prevention. When the second protective sleeve 22 is fitted onto the internal hexagonal sleeve 6, the hexagonal insert 23 inside the second protective sleeve 22 will be inserted into the hexagonal hole on the internal hexagonal sleeve 6, thereby limiting the worm gear 4 and preventing it from rotating due to the movement of the car.

[0022] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A helical gear type automotive brake clearance adjusting arm, comprising: The outer shell (1) has an inner toothed sleeve (2) rotatably connected to its inner surface, a worm gear (3) fixedly connected to the outer surface of the inner toothed sleeve (2), a worm (4) rotatably connected to the inner surface of the outer shell (1), a limit block (5) fixedly connected to the right end of the worm (4), an internal hexagonal sleeve (6) fixedly connected to the left end of the worm (4), an adjusting plate (7) fixedly connected to the rear surface of the inner toothed sleeve (2), and a dust cover (8) provided on the front surface of the outer shell (1). The front surface of the dust cover (8) is provided with screws (9), and the outer surface of the outer shell (1) is provided with an oil injection pipe (10). The oil injection pipe (10) is characterized in that a cylindrical tube (11) is slidably connected to the inner surface of the oil injection pipe (10), a filter screen (12) is fixedly connected to the inner surface of the cylindrical tube (11), a limit ring (13) is fixedly connected to the left end of the cylindrical tube (11), a first threaded hole (14) is provided on the outer surface of the limit ring (13), and a bolt (15) is threadedly connected to the inner surface of the first threaded hole (14). A threaded rod (16) is fixedly connected to the outer surface of the outer shell (1). A limiting plate (17) is fixedly connected to the left end of the threaded rod (16). A spring (18) is provided on the outer surface of the threaded rod (16). A nut (19) is threadedly connected to the outer surface of the limiting plate (17). A connecting plate (20) is slidably connected to the outer surface of the threaded rod (16). A first protective sleeve (21) is fixedly connected to the lower end of the connecting plate (20). A second protective sleeve (22) is fixedly connected to the upper end of the connecting plate (20). A hexagonal insert (23) is fixedly connected to the inner surface of the second protective sleeve (22).

2. The helical gear type automotive brake clearance adjusting arm according to claim 1, characterized in that, The left end of the oil injection pipe (10) is provided with a limiting groove (24), and the inner surface of the limiting groove (24) is adapted to the limiting ring (13).

3. A helical gear type automotive brake clearance adjusting arm according to claim 2, characterized in that, The inner surface of the limiting groove (24) is provided with a second threaded hole (25), and the inner surface of the second threaded hole (25) is threadedly connected to the bolt (15).

4. A helical gear type automotive brake clearance adjusting arm according to claim 1, characterized in that, The left end of the spring (18) is in contact with the connecting plate (20), and the right end of the spring (18) is in contact with the outer shell (1).

5. A helical gear type automotive brake clearance adjusting arm according to claim 1, characterized in that, The left surface of the connecting plate (20) is in contact with the nut (19).

6. A helical gear type automotive brake clearance adjusting arm according to claim 1, characterized in that, The outer surface of the hexagonal insert (23) is slidably connected to the inner hexagonal sleeve (6).

7. A helical gear type automotive brake clearance adjusting arm according to claim 1, characterized in that, The second protective sleeve (22) is fitted onto the outer surface of the internal hexagonal sleeve (6), and the first protective sleeve (21) is fitted onto the outer surface of the oil injection pipe (10).

8. A helical gear type automotive brake clearance adjusting arm according to claim 1, characterized in that, The outer surface of the limiting block (5) is rotatably connected to the outer shell (1), and the worm gear (3) is located inside the outer shell (1).

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