Main shaft pin of automobile brake pedal
By using the combined technology of a limiter device and a hydraulic cylinder during the molding process of the shaft pin head, the problems of inconvenient and defective products of the traditional molding method are solved, and the rapid and uniform molding of the shaft pin head is achieved and the quality of the product is improved.
Patent Information
- Application Number
- CN202421061484.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The existing shaft pin head molding method is inconvenient and leads to poor product, resulting in large head diameter, uneven thickness, and uneven force.
The limiting device is used in conjunction with the hydraulic cylinder and the cold heading forming groove. The hydraulic cylinder drives the extrusion plate to drive the auxiliary shaft body to be squeezed into the forming groove to achieve rapid and uniform forming of the shaft pin head.
It realizes the speed of forming the shaft pin head and improves the product quality, and avoids the uneven force and burr problems in the traditional method.
Smart Images
Figure CN222351205U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pedal main shaft pins, in particular to a main shaft pin for an automobile brake pedal. Background Art
[0002] In the prior art, the heads of axle pins are mostly irregularly shaped. The traditional head forming method is to rely on the tail punch to impact the rod when the cutting die on the head reaches the lowest lower cutting point, and transmit the reaction force to complete the final head trimming. However, since the head diameter of such products is large and the head thickness is very thin, the force at the moment of ejection is large and uneven, resulting in defects such as product head tilt, burrs and unqualified verticality. Therefore, it is necessary to improve the head forming method and adopt a head cold heading direct forming method, which is not only convenient and fast, but also can ensure various dimensions of the head. Utility Model Content
[0003] Based on the technical problem that the existing axle pin head molding method is inconvenient and may cause product defects, the utility model proposes a main axle pin for an automobile brake pedal.
[0004] The utility model proposes a main shaft pin of an automobile brake pedal, comprising a base, a main shaft body and a secondary shaft body, the outer surface of the secondary shaft body is rotatably connected with a mounting tube, a limiting device is arranged inside the mounting tube, the limiting device comprises an arc plate, a limiting rod, a limiting screw, a first spring, a second spring and a limiting cross plate, the first spring squeezes the limiting rod and inserts it into the arc plate to keep the arc plate and the mounting tube relatively stable, the second spring squeezes the limiting cross plate to make it stuck above the limiting screw.
[0005] Preferably, the two arc plates are fixedly mounted on the outer surface of the secondary shaft body, and the two arc plates are vertically symmetrically distributed with the axis of the secondary shaft body as the center of symmetry. The right end of the mounting tube is fixedly mounted inside the main shaft body, the first spring is fixedly mounted inside the mounting tube, and the limit rod is fixedly connected to the right end of the first spring.
[0006] Preferably, the right end of the limit rod is slidably inserted into the interior of the arc plate, a limit block is fixedly installed on the outer surface of the limit rod, a limit groove is opened inside the mounting tube, and the outer surface of the limit block is slidably connected to the interior of the limit groove.
[0007] Preferably, the limit screw is threadedly connected to the inside of the mounting tube, the outer surface of the limit screw contacts the outer surface of the limit block, a circular plate is fixedly installed on the upper end of the limit screw, a groove is opened inside the circular plate, and a fixing rod is fixedly installed inside the groove.
[0008] Preferably, the limiting horizontal plate is slidably connected to the upper surface of the circular plate, the outer surface of the limiting horizontal plate is slidably connected to the interior of the mounting tube, the second spring is fixedly connected to the left side surface of the limiting horizontal plate, and the other end of the second spring is fixedly connected to the interior of the mounting tube.
[0009] Preferably, circular grooves are provided on the outer surface of the mounting tube, the outer surface of the circular plate is slidably connected to the inside of the circular groove, a fixed block is fixedly installed on the upper surface of the limiting horizontal plate, and arc grooves are provided on the upper and lower ends of the inner side of the mounting tube, and the two arc grooves are vertically symmetrically distributed with the axis of the mounting tube as the center of symmetry.
[0010] Preferably, a cold heading is fixedly installed on the left end of the upper surface of the base, a forming groove is opened inside the cold heading, the front end of the secondary shaft body is slidably inserted into the inside of the forming groove, a mounting seat is fixedly installed on the right end of the upper surface of the base, a hydraulic cylinder is fixedly installed inside the mounting seat, an extrusion plate is fixedly installed on the front end of the hydraulic cylinder, a circular ring plate is fixedly installed on the outer surface of the extrusion plate, and the end of the secondary shaft body is slidably inserted into the inner surface of the circular ring plate.
[0011] The beneficial effects of the present invention are:
[0012] By setting a limiting device, when the shaft pin head is formed, the secondary shaft body is first placed in the annular plate on the extrusion plate, and then the hydraulic cylinder is started to allow the extrusion plate to drive the secondary shaft body to be extruded into the forming groove to form the secondary shaft body head. This molding is not only quick but also ensures good product quality. Then the secondary shaft body is taken out and the secondary shaft body is inserted into the installation cylinder so that the main shaft body and the secondary shaft body form the main shaft pin. When inserting the secondary shaft body, the arc plate is aligned with the arc groove and inserted into the inside, and then the secondary shaft body is rotated. At this time, the side of the arc plate will squeeze the front end of the limiting rod, so that the limiting rod moves backward and continues to rotate until the first spring squeezes the limiting rod into the arc plate, and then the limiting screw is turned into the installation cylinder, the limiting block is pressed to limit the limiting rod, and the second spring squeezes the limiting cross plate so that the limiting cross plate is always stuck above the limiting screw, so that the secondary shaft body and the main shaft body remain relatively stable, thereby achieving the effect of facilitating the molding of the shaft pin head and ensuring good product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of a main shaft pin of an automobile brake pedal proposed by the utility model;
[0014] Figure 2 This is a three-dimensional diagram of the mounting seat structure of the main shaft pin of the automobile brake pedal proposed by the utility model;
[0015] Figure 3 A three-dimensional diagram of the main shaft body mechanism of a main shaft pin of an automobile brake pedal proposed by the utility model;
[0016] Figure 4 This is a three-dimensional diagram of the secondary shaft structure of the main shaft pin of the automobile brake pedal proposed by the utility model;
[0017] Figure 5 The utility model is a cross-sectional view of a mounting tube structure of a main shaft pin of an automobile brake pedal.
[0018] In the figure: 1. base; 11. cold heading; 12. forming groove; 13. mounting seat; 14. hydraulic cylinder; 15. extrusion plate; 16. circular ring plate; 2. main shaft body; 3. secondary shaft body; 4. mounting cylinder; 41. limiting groove; 42. circular groove; 43. arc groove; 5. arc plate; 6. limiting rod; 61. limiting block; 7. limiting screw; 71. circular plate; 72. groove; 73. fixing rod; 8. first spring; 9. second spring; 10. limiting horizontal plate; 101. fixing block. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0020] Reference Figure 1-Figure 5 A main shaft pin of a car brake pedal comprises a base 1, a main shaft body 2 and a secondary shaft body 3. The outer surface of the secondary shaft body 3 is rotatably connected with a mounting tube 4. A limiting device is arranged inside the mounting tube 4. The limiting device comprises an arc plate 5, a limiting rod 6, a limiting screw 7, a first spring 8, a second spring 9 and a limiting cross plate 10. The first spring 8 squeezes the limiting rod 6 and inserts it into the arc plate 5 to keep the arc plate 5 and the mounting tube 4 relatively stable. The second spring 9 squeezes the limiting cross plate 10 to make it stuck above the limiting screw 7.
[0021] like Figure 4 and Figure 5 As shown, the two arc plates 5 are fixedly mounted on the outer surface of the secondary shaft body 3, and the two arc plates 5 are vertically symmetrically distributed with the axis of the secondary shaft body 3 as the symmetry center. The right end of the mounting cylinder 4 is fixedly mounted inside the main shaft body 2, and the first spring 8 is fixedly mounted inside the mounting cylinder 4. The limiting rod 6 is fixedly connected to the right end of the first spring 8. The first spring 8 squeezes the limiting rod 6 so that the limiting rod 6 is stuck in the arc plate 5 to ensure that the secondary shaft body 3 remains stable relative to the mounting cylinder 4.
[0022] like Figure 5As shown, the right end of the limit rod 6 is slidably inserted into the interior of the arc plate 5, and a limit block 61 is fixedly installed on the outer surface of the limit rod 6. A limit groove 41 is opened inside the mounting tube 4, and the outer surface of the limit block 61 is slidably connected with the interior of the limit groove 41. The limit block 61 is stuck in the limit groove 41 and slides, ensuring that the limit rod 6 can maintain a stable state and move horizontally without rotating during the movement, while limiting the moving distance of the limit rod 6.
[0023] like Figure 5 As shown, the limit screw 7 is threadedly connected to the inside of the mounting tube 4, and the outer surface of the limit screw 7 contacts the outer surface of the limit block 61. A circular plate 71 is fixedly installed on the upper end of the limit screw 7. A groove 72 is provided inside the circular plate 71. A fixing rod 73 is fixedly installed inside the groove 72. The limit screw 7 is rotated into the mounting tube 4 to press the limit block 61, thereby limiting the limit rod 6 to prevent the limit rod 6 from escaping from the arc plate 5.
[0024] like Figure 5 As shown, the limiting horizontal plate 10 is slidably connected to the upper surface of the circular plate 71, the outer surface of the limiting horizontal plate 10 is slidably connected to the inside of the mounting tube 4, the second spring 9 is fixedly connected to the left surface of the limiting horizontal plate 10, and the other end of the second spring 9 is fixedly connected to the inside of the mounting tube 4. The second spring 9 squeezes the limiting horizontal plate 10 so that the limiting horizontal plate 10 is always stuck above the limiting screw 7, ensuring that the limiting screw 7 is not easily detached from the mounting tube 4.
[0025] like Figure 3 and Figure 5 As shown, circular grooves 42 are provided on the outer surface of the mounting tube 4, the outer surface of the circular plate 71 is slidably connected to the inside of the circular grooves 42, a fixing block 101 is fixedly installed on the upper surface of the limiting horizontal plate 10, and circular arc grooves 43 are provided on the upper and lower ends of the inner side of the mounting tube 4. The two circular arc grooves 43 are vertically symmetrically distributed with the axis of the mounting tube 4 as the symmetry center. The secondary shaft body 3 can be inserted into the mounting tube 4 by aligning the circular arc plate 5 with the circular arc grooves 43, and it is more convenient to move the limiting horizontal plate 10 by grasping the fixing block 101.
[0026] like Figure 1 and Figure 2 As shown, a cold header 11 is fixedly installed on the left end of the upper surface of the base 1, and a forming groove 12 is opened inside the cold header 11. The front end of the secondary shaft body 3 is slidably inserted into the inside of the forming groove 12. A mounting seat 13 is fixedly installed on the right end of the upper surface of the base 1, and a hydraulic cylinder 14 is fixedly installed inside the mounting seat 13. An extrusion plate 15 is fixedly installed on the front end of the hydraulic cylinder 14, and a circular ring plate 16 is fixedly installed on the outer surface of the extrusion plate 15. The end of the secondary shaft body 3 is slidably inserted into the inner surface of the circular ring plate 16. The hydraulic cylinder 14 is started to allow the extrusion plate 15 to drive the secondary shaft body 3 to be extruded into the forming groove 12, thereby completing the forming of the head of the secondary shaft body 3.
[0027] By setting a limit device, when the shaft pin head is formed, the secondary shaft body 3 is first placed in the circular plate 16 on the extrusion plate 15, and then the hydraulic cylinder 14 is started, so that the extrusion plate 15 drives the secondary shaft body 3 to be extruded into the forming groove 12, so that the head of the secondary shaft body 3 is formed. This molding is not only fast, but also ensures good product quality. Then the secondary shaft body 3 is taken out, and the secondary shaft body 3 is inserted into the installation tube 4, so that the main shaft body 2 and the secondary shaft body 3 form the main shaft pin. When inserting the secondary shaft body 3, align the arc plate 5 with the arc groove 43 and insert it into the inside, and then Rotate the secondary shaft body 3. At this time, the side of the arc plate 5 will squeeze the front end of the limit rod 6, causing the limit rod 6 to move backward and continue to rotate until the first spring 8 squeezes the limit rod 6 into the arc plate 5. Then the limit screw 7 is turned into the installation tube 4, and the limit block 61 is pressed to limit the limit rod 6. The second spring 9 squeezes the limit cross plate 10 so that the limit cross plate 10 is always stuck above the limit screw 7, so that the secondary shaft body 3 and the main shaft body 2 remain relatively stable, thereby facilitating the molding of the shaft pin head and ensuring good product quality.
[0028] Working principle: when forming the head of the axle pin, first place the secondary shaft body 3 in the annular plate 16 on the extrusion plate 15, and then start the hydraulic cylinder 14, so that the extrusion plate 15 drives the secondary shaft body 3 to be extruded into the forming groove 12, so that the head of the secondary shaft body 3 is formed, and then the secondary shaft body 3 is taken out, and the secondary shaft body 3 is inserted into the installation tube 4, so that the main shaft body 2 and the secondary shaft body 3 form the main shaft pin. When inserting the secondary shaft body 3, align the arc plate 5 with the arc groove 43 and insert it inward, and then rotate the secondary shaft body 3. At this time, the side of the arc plate 5 will squeeze the front end of the limit rod 6, so that the limit rod 6 moves backward and continues to rotate until the first spring 8 squeezes the limit rod 6 into the arc plate 5, and then the limit screw 7 is turned into the installation tube 4, and the limit block 61 is pressed to limit the limit rod 6, and the second spring 9 squeezes the limit cross plate 10 so that the limit cross plate 10 is always stuck above the limit screw 7.
[0029] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.
Claims
1. A main shaft pin of a vehicle brake pedal, comprising a base (1), a main shaft body (2) and a secondary shaft body (3), characterized in that: The outer surface of the secondary shaft body (3) is rotatably connected to a mounting tube (4), and a limiting device is arranged inside the mounting tube (4). The limiting device comprises an arc plate (5), a limiting rod (6), a limiting screw (7), a first spring (8), a second spring (9) and a limiting transverse plate (10). The first spring (8) squeezes the limiting rod (6) and inserts it into the arc plate (5) so that the arc plate (5) and the mounting tube (4) remain relatively stable, and the second spring (9) squeezes the limiting transverse plate (10) so that it is stuck above the limiting screw (7).
2. The main shaft pin of the automobile brake pedal according to claim 1, characterized in that: The two arc plates (5) are both fixedly mounted on the outer surface of the secondary shaft body (3), and the two arc plates (5) are vertically symmetrically distributed with the axis of the secondary shaft body (3) as the symmetry center. The right end of the mounting tube (4) is fixedly mounted inside the main shaft body (2), the first spring (8) is fixedly mounted inside the mounting tube (4), and the limit rod (6) is fixedly connected to the right end of the first spring (8).
3. The main shaft pin of the automobile brake pedal according to claim 1, characterized in that: The right end of the limit rod (6) is slidably inserted into the interior of the arc plate (5); a limit block (61) is fixedly installed on the outer surface of the limit rod (6); a limit groove (41) is provided inside the installation tube (4); and the outer surface of the limit block (61) is slidably connected to the interior of the limit groove (41).
4. The main shaft pin of the automobile brake pedal according to claim 3, characterized in that: The limiting screw (7) is threadedly connected to the interior of the mounting tube (4); the outer surface of the limiting screw (7) contacts the outer surface of the limiting block (61); a circular plate (71) is fixedly mounted on the upper end of the limiting screw (7); a groove (72) is formed inside the circular plate (71); and a fixing rod (73) is fixedly mounted inside the groove (72).
5. The main shaft pin of the automobile brake pedal according to claim 4, characterized in that: The limiting transverse plate (10) is slidably connected to the upper surface of the circular plate (71), the outer surface of the limiting transverse plate (10) is slidably connected to the interior of the mounting tube (4), the second spring (9) is fixedly connected to the left side surface of the limiting transverse plate (10), and the other end of the second spring (9) is fixedly connected to the interior of the mounting tube (4).
6. The main shaft pin of the automobile brake pedal according to claim 4, characterized in that: The outer surface of the mounting tube (4) is provided with a circular groove (42), the outer surface of the circular plate (71) is slidably connected to the inside of the circular groove (42), a fixing block (101) is fixedly installed on the upper surface of the limiting horizontal plate (10), and the upper and lower ends of the inner side of the mounting tube (4) are provided with circular arc grooves (43), and the two circular arc grooves (43) are vertically symmetrically distributed with the axis of the mounting tube (4) as the symmetry center.
7. The main shaft pin of the automobile brake pedal according to claim 1, characterized in that: A cold header (11) is fixedly mounted on the left end of the upper surface of the base (1), a forming groove (12) is provided inside the cold header (11), and the front end of the secondary shaft body (3) is slidably inserted into the inside of the forming groove (12); a mounting seat (13) is fixedly mounted on the right end of the upper surface of the base (1), a hydraulic cylinder (14) is fixedly mounted inside the mounting seat (13), an extrusion plate (15) is fixedly mounted on the front end of the hydraulic cylinder (14), a circular ring plate (16) is fixedly mounted on the outer surface of the extrusion plate (15), and the end of the secondary shaft body (3) is slidably inserted into the inner surface of the circular ring plate (16).