Limiting mechanism in gap adjusting structure

Abstract

The utility model relates to the field of brakes, and discloses a limiting mechanism in a gap adjusting structure, which comprises an adjusting rotating shaft, and a self-adjusting fixing plate, a self-adjusting spring, a supporting sleeve, an adjusting shifting plate and a limiting structure are sequentially sleeved on the adjusting rotating shaft from top to bottom; the limiting structure comprises a limiting column and a limiting block; the limiting column is fixedly connected to the lower end of the adjusting rotating shaft, the limiting block is arranged on the limiting column in a sleeving mode, a limiting groove is formed in the limiting block, and the limiting column is assembled in the limiting groove and plays a limiting role in the axial direction and the circumferential direction of the limiting block; the limiting block is located on the lower side of the adjusting shifting plate and limits the adjusting shifting plate. The structure has the advantages of stable limiting, convenience in installation and the like.

Description

Technical Field

[0001] The utility model relates to the field of caliper gap adjustment, in particular to a limiting mechanism in a gap adjustment structure. Background Art

[0002] The applicant has previously applied for a utility model patent with publication number CN209725035U - a disc brake with synchronous clearance adjustment. It includes a support seat, on which are provided parallel active clearance adjustment mounting holes and driven clearance adjustment mounting holes, in which an active regulator is rotatably connected, in which a driven regulator is rotatably connected, and between which a transmission mechanism is provided; it also includes an elastic coupling member, which is simultaneously sleeved on the active regulator and the driven regulator, and applies a radial clamping force between the active regulator and the driven regulator. The above-mentioned disc brake, by providing an elastic coupling member, ensures axial synchronous movement between the active regulator and the driven regulator, so as to achieve the purpose of synchronous clearance adjustment.

[0003] In the above-mentioned prior art, the regulator comprises a main body and an elastic member, one end of the main body is further provided with a main body fixing member, a retaining spring is provided between the main body fixing member and the main body, and there is a risk of failure of the retaining spring during actual use. Utility Model Content

[0004] The utility model aims at the shortcomings of the prior art and provides a limiting mechanism in a gap adjustment structure.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A limiting mechanism in a gap adjustment structure comprises an adjusting shaft, wherein the adjusting shaft is sleeved with a self-adjusting fixing plate, a self-adjusting spring, a supporting sleeve, an adjusting dial plate and a limiting structure in sequence from top to bottom;

[0007] The upper end of the self-adjusting spring is supported on the self-adjusting fixing plate, the lower end of the self-adjusting spring is supported on the supporting sleeve, and the self-adjusting spring is in a compressed state;

[0008] The lower end of the support sleeve is axially limited by a limiting structure;

[0009] The limiting structure includes a limiting column and a limiting block; the limiting column is fixedly connected to the lower end of the adjustment shaft, the limiting block is sleeved on the limiting column, a limiting groove is provided on the limiting block, the limiting column is assembled in the limiting groove and plays a limiting role in the axial and circumferential directions of the limiting block; the limiting block is located at the lower side of the adjustment dial plate to limit the adjustment dial plate.

[0010] Preferably, the adjustment shaft includes a guide section, the adjustment plate is sleeved on the guide section, the guide section includes a guide surface, the guide surface is a plane, the guide surface is parallel to the axis of the adjustment shaft, a mounting groove is provided on the lower side surface of the adjustment plate, an assembly groove is provided on the bottom surface of the mounting groove, the assembly groove is adapted to the cross-section of the guide section, the adjustment plate is sleeved on the guide section through the assembly groove, and the limit block is installed in the mounting groove.

[0011] Preferably, the limiting groove is arranged in the middle of the limiting block, and a guide groove is arranged on the bottom surface of the limiting groove, the guide groove runs through the upper end surface and the lower end surface of the limiting block, and the cross-sectional shape of the guide groove is adapted to the shape of the limiting column;

[0012] The limit block passes through the limit column through the guide groove and is supported on the lower end of the adjustment plate. After the limit block completely passes through the limit column, it rotates a certain angle. Under the action of the self-adjusting spring, the limit column falls into the limit groove, and the side walls of the limit groove restrict the sides of the limit column mutually.

[0013] Preferably, there is a connecting shaft section between the limiting column and the guide section, the outer diameter of the connecting shaft section is smaller than the outer diameter of the limiting column section, and the outer diameter of the limiting column is smaller than the maximum outer diameter of the guide section; the limiting block is located in the area where the connecting shaft section is located.

[0014] Preferably, the limiting column, the connecting shaft section, the guide section and the adjusting shaft are an integrated structure arranged coaxially.

[0015] Preferably, the limiting column is a hexagonal prism, the maximum length of the limiting groove is greater than the maximum outer diameter of the limiting column, the limiting groove includes a blocking surface, the distance between the blocking surfaces is equal to the distance between the opposite surfaces of the hexagonal prism, and the side of the limiting column is limited between the blocking surfaces.

[0016] Preferably, the limiting groove is a rectangle, and the long side of the rectangle is greater than the length of the longest diagonal of the hexagonal prism.

[0017] Preferably, there are two guide surfaces, which are relatively located at the front and rear sides of the guide section.

[0018] The utility model adopts the above technical solution, and has the following significant technical effects:

[0019] The utility model discloses a limiting mechanism in a gap adjustment structure, wherein the limiting mechanism saves a retaining spring and is simpler to assemble than a retaining spring structure, has a longer service life and does not have the problem of failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the device.

[0021] Figure 2 yes Figure 1 Schematic diagram of the structure without the support sleeve.

[0022] Figure 3 yes Figure 2 main view.

[0023] Figure 4 yes Figure 3 AA cross-sectional view.

[0024] Figure 5 yes Figure 3 A cross-sectional view of the BB.

[0025] Figure 6 It is an exploded schematic diagram of the adjustment plate, limit block and self-adjusting shaft.

[0026] Figure 7 It is a schematic diagram of the structure of the limit block, the limit column and the self-adjusting rotating shaft.

[0027] The technical names of the accompanying drawings are: 1-adjusting shaft, 2-self-adjusting fixing plate, 3-self-adjusting spring, 4-support sleeve, 5-adjusting plate, 6-limiting column, 7-limiting block, 8-limiting groove, 9-guide section, 10-guide surface, 11-installation groove, 12-assembly groove, 13-guide groove, 14-limiting surface, 15-blocking surface, 16-connecting shaft section. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Example 1

[0030] A limiting mechanism in a gap adjustment structure comprises an adjusting shaft 1, wherein the adjusting shaft 1 is sleeved with a self-adjusting fixing plate 2, a self-adjusting spring 3, a supporting sleeve 4, an adjusting dial plate 5 and a limiting structure in sequence from top to bottom;

[0031] The upper end of the self-adjusting spring 3 is supported on the self-adjusting fixing plate 2, and the lower end of the self-adjusting spring 3 is supported on the supporting sleeve 4, and the self-adjusting spring 3 is in a compressed state;

[0032] The lower end of the support sleeve 4 is axially limited by a limiting structure;

[0033] The limiting structure includes a limiting column 6 and a limiting block 7; the limiting column 6 is fixedly connected to the lower end of the adjustment shaft 1, the limiting block 7 is sleeved on the limiting column 6, and a limiting groove 8 is provided on the limiting block 7. The limiting column 6 is assembled in the limiting groove 8 and plays a limiting role in the axial and circumferential directions of the limiting block 7; the limiting block 7 is located at the lower side of the adjustment dial plate 5 to limit the adjustment dial plate 5.

[0034] In this embodiment, the limit column 6 and the adjustment shaft 1 are an integrally formed structure. The limit column 6 in this embodiment is a hexagonal prism structure, and its maximum outer diameter is smaller than the outer diameter of the adjustment shaft 1. The self-adjusting fixed plate 2, the self-adjusting spring 3, the support sleeve 4, the adjustment plate 5 and the lower end of the limit block 7 are ultimately limited by the limit column 6. It is obvious that the limit column 6 and the adjustment rod shaft are coaxially arranged.

[0035] In this embodiment, the adjustment shaft 1 includes a guide section 9, and the adjustment dial plate 5 is sleeved on the guide section 9. The guide section 9 includes a guide surface 10. The guide surface 10 is a plane, and the guide surface 10 is parallel to the axis of the adjustment shaft 1. The specific structural design of the guide section 9 is as follows: the guide section 9 is formed by cutting the side of the adjustment shaft 1 to form the guide surface 10. In this embodiment, the guide surface 10 extends to the lower end of the adjustment shaft 1. The limit column 6 and the lower end of the adjustment shaft 1 are connected by a connecting shaft, and the shaft diameter of the connecting shaft is smaller than the outer diameter of the limit columns 6 and the adjustment shaft 1 on both sides.

[0036] The lower side of the adjustment plate 5 is provided with a mounting groove 11, and the bottom surface of the mounting groove 11 is provided with an assembly groove 12, which is adapted to the cross section of the guide section 9. The adjustment plate 5 is sleeved on the guide section 9 through the assembly groove 12, and the limit block 7 is installed in the mounting groove 11. Obviously, the width of the assembly groove 12 is greater than the size of the limit column 6, and the adjustment plate 5 can pass through the limit column 6 and be installed on the guide section 9, and the guide section 9 can ensure that the adjustment plate 5 and the adjustment shaft 1 rotate synchronously.

[0037] The shape of the mounting groove 11 matches the outer contour of the limiting block 7 , and the limiting block 7 is installed in the mounting groove 11 . In this embodiment, the mounting groove 11 is a blind groove with a circular cross section.

[0038] The limiting groove 8 is arranged in the middle of the limiting block 7, and a guide groove 13 is arranged on the bottom surface of the limiting groove 8. The guide groove 13 runs through the upper end surface and the lower end surface of the limiting block 7, and the cross-sectional shape of the guide groove 13 is adapted to the shape of the limiting column 6;

[0039] The significance of the guide groove 13 passing through the upper end face and the lower end face of the limit block 7 is that the guide groove 13 can provide a channel so that the limit block 7 can pass through the limit column 6 from the lower end through the guide groove 13. After being pushed upward for a certain distance, when the guide groove 13 completely passes through the area of ​​the limit groove 8, the limit block 7 can rotate freely. After rotating to a certain angle, the limit groove 8 no longer cooperates with the limit column 6. At this time, the limit block 7 is kept axially pushed, and the bottom surface of the limit groove 8 contacts the upper end face of the limit column 6, so that the limit block 7 is limited. In order to ensure that the limit block 7 cannot rotate in the limit groove 8, it is necessary to design the side of the limit groove 8 to fit exactly with the side of the limit block 7, or at least the gap is very small. At this time, the limit column 6 realizes circumferential limitation of the limit block 7.

[0040] In this embodiment, since the limit groove 8 is required and the limit groove 8 needs to be staggered, the maximum outer diameter of the limit groove 8 is greater than the width of the limit groove 8. This is because the side surface of the limit groove 8 in the width direction needs to limit the side surface of the limit column 6; the maximum outer diameter of the limit groove 8 is smaller than the length of the limit groove 8. This is because the limit groove 8 needs to place the long side of the guide column.

[0041] The limit block 7 passes through the limit column 6 through the guide groove 13 and is supported at the lower end of the adjustment plate 5. After the limit block 7 completely passes through the limit column 6, it rotates a certain angle. Under the action of the self-adjusting spring 3, the limit column 6 falls into the limit groove 8, and the side walls of the limit groove 8 mutually restrict the side surfaces of the limit column 6. The limit column 6 includes a plurality of limit surfaces 14, and the limit groove 8 includes a stop surface 15 matching the limit surface 14; when the limit column 6 falls into the limit groove 8, the stop surface 15 fits with the limit surface 14 to limit the circumferential rotation of the limit block 7.

[0042] In this embodiment, the guide column is shaped like a hexagonal prism, and all of its side surfaces can be limiting surfaces 14, but when it is actually working, it only has two limiting surfaces 14 applied; the limiting groove 8 is a rectangular groove, and the side surfaces in the width direction of the rectangular groove are blocking surfaces 15, and the two opposite side surfaces of the hexagonal prism are limited by the blocking surfaces 15, and the two side surfaces are the limiting surfaces 14.

[0043] In this embodiment, there is also a connecting shaft section 16 between the limit column 6 and the guide section 9. The outer diameter of the connecting shaft section 16 is smaller than the outer diameter of the limit column 6, and the outer diameter of the limit column 6 is smaller than the maximum outer diameter of the guide section 9; the limit block 7 is located in the area where the connecting shaft section 16 is located.

[0044] The limiting column 6, the connecting shaft section 16, the guide section 9 and the adjusting shaft 1 are an integrated structure arranged coaxially.

[0045] The limiting groove 8 includes blocking surfaces 15 , the distance between the blocking surfaces 15 is equal to the distance between opposite surfaces of the hexagonal prism, and the side surface of the limiting column 6 , namely the limiting surface 14 mentioned above, is limited between the blocking surfaces 15 .

[0046] Specifically, the limiting groove 8 selected in this embodiment is a rectangle, the long side of the rectangle is greater than the length of the longest diagonal of the hexagonal prism, and the side surface of the rectangular groove in the width direction is a blocking surface 15.

[0047] The specific assembly process of this structure is as follows: first, install the self-adjusting fixing plate 2, the self-adjusting spring 3, and the support sleeve 4 on the self-adjusting rotating shaft, and fix the self-adjusting fixing plate 2 and the self-adjusting rotating shaft to ensure the support limit at the upper end;

[0048] Then install the adjustment plate 5 and the limit block 7 in sequence; installation of the adjustment plate 5: the installation slot 11 of the adjustment plate 5 is facing downward, and then the assembly slot 12 passes through the limit column 6 in sequence, and the connecting shaft sleeve is arranged on the guide section 9 and supported by the self-adjusting spring 3;

[0049] Installation of the limit block 7: The guide groove 13 of the limit block 7 cooperates with the limit block 7 and then pushes the limit block 7 axially upward, so that the lower end of the guide groove 13 is also located on the upper side of the limit column 6. At this time, the limit column 6 will not axially limit the limit block 7, and then rotate a certain angle to make the side of the limit groove 8 in the width direction parallel to the side of the limit column 6, that is, the limit column 6 can fall into the limit groove 8, and then remove the upward thrust. Under the action of the self-adjusting spring 3, the limit block 7 moves downward, and the upper end of the limit column 6 falls into the limit groove 8, and the circumferential limit locking of the limit column 6 is realized. Therefore, the entire limit structure plays the same function as the retaining spring.

[0050] Example 2

[0051] The difference between this embodiment and the first embodiment is that there are two guide surfaces 10 , which are relatively located at the front and rear sides of the guide section 9 .

[0052] Example 3

[0053] The difference between this embodiment and embodiment 1 is that the cross-section of the limit column 6 is a quadrilateral or octagon, an ellipse or other non-circular structure. As long as the limit block 7 can move axially through the limit column 6, the limit block 7 rotates a certain angle, and the limit groove 8 can circumferentially limit the limit block 7 when cooperating with the limit column 6, it should fall within the protection scope of this solution.

Claims

1. A limiting mechanism in a gap adjustment structure, characterized in that: The adjusting shaft (1) comprises a self-adjusting fixing plate (2), a self-adjusting spring (3), a supporting sleeve (4), an adjusting dial plate (5) and a limiting structure, which are sequentially sleeved on the adjusting shaft (1) from top to bottom; The upper end of the self-adjusting spring (3) is supported on the self-adjusting fixing plate (2), the lower end of the self-adjusting spring (3) is supported on the supporting sleeve (4), and the self-adjusting spring (3) is in a compressed state; The lower end of the support sleeve (4) is axially limited by a limiting structure; The limiting structure comprises a limiting column (6) and a limiting block (7); the limiting column (6) is fixedly connected to the lower end of the adjustment shaft (1); the limiting block (7) is sleeved on the limiting column (6); a limiting groove (8) is provided on the limiting block (7); the limiting column (6) is assembled in the limiting groove (8) and plays a limiting role in the axial and circumferential directions of the limiting block (7); the limiting block (7) is located at the lower side of the adjustment dial plate (5) to limit the adjustment dial plate (5).

2. The limiting mechanism in the gap adjustment structure according to claim 1 is characterized in that: The adjusting shaft (1) comprises a guide section (9), the adjusting plate (5) is sleeved on the guide section (9), the guiding section (9) comprises a guiding surface (10), the guiding surface (10) is a plane, the guiding surface (10) is parallel to the axis of the adjusting shaft (1), a mounting groove (11) is arranged on the lower side of the adjusting plate (5), a mounting groove (12) is arranged on the bottom surface of the mounting groove (11), the mounting groove (12) is matched with the cross section of the guiding section (9), the adjusting plate (5) is sleeved on the guiding section (9) through the mounting groove (12), and the limiting block (7) is installed in the mounting groove (11).

3. The limiting mechanism in the gap adjustment structure according to claim 1 or claim 2, characterized in that: The limiting groove (8) is arranged in the middle of the limiting block (7), and a guide groove (13) is arranged on the bottom surface of the limiting groove (8). The guide groove (13) runs through the upper end surface and the lower end surface of the limiting block (7), and the cross-sectional shape of the guide groove (13) is adapted to the shape of the limiting column (6); The limit block (7) passes through the limit column (6) through the guide groove (13) and is supported on the lower end of the adjustment plate (5). After the limit block (7) completely passes through the limit column (6), it rotates a certain angle. Under the action of the self-adjusting spring (3), the limit column (6) falls into the limit groove (8). The limit column (6) includes a plurality of limit surfaces (14), and the limit groove (8) includes a stop surface (15) matched with the limit surface (14). When the limit column (6) falls into the limit groove (8), the stop surface (15) fits with the limit surface (14) to limit the circumferential rotation of the limit block (7).

4. The limiting mechanism in the gap adjustment structure according to claim 3 is characterized in that: A connecting shaft section (16) is also provided between the limiting column (6) and the guide section (9); the outer diameter of the connecting shaft section (16) is smaller than the outer diameter of the limiting column (6); and the outer diameter of the limiting column (6) is smaller than the maximum outer diameter of the guide section (9); and the limiting block (7) is located in the area where the connecting shaft section (16) is located.

5. The limiting mechanism in the gap adjustment structure according to claim 4 is characterized in that: The limiting column (6), the connecting shaft section (16), the guide section (9) and the adjusting shaft (1) are an integrated structure arranged coaxially.

6. The limiting mechanism in the gap adjustment structure according to claim 3 is characterized in that: The limiting column (6) is a hexagonal prism, the maximum length of the limiting groove (8) is greater than the maximum outer diameter of the limiting column (6), the limiting groove (8) includes limiting surfaces (14), the distance between the limiting surfaces (14) is equal to the distance between the opposite surfaces of the hexagonal prism, and the side surface of the limiting column (6) is limited between the blocking surfaces (15).

7. The limiting mechanism in the gap adjustment structure according to claim 6, characterized in that: The limiting groove (8) is rectangular, and the long side of the rectangle is greater than the length of the longest diagonal line of the hexagonal prism.

8. The limiting mechanism in the gap adjustment structure according to claim 2, characterized in that: There are two guide surfaces (10), which are relatively located at the front side and the rear side of the guide section (9).

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