A piston assembly apparatus for a vehicle brake
By designing a piston assembly device for automotive brakes, and utilizing the cooperation of a reset plate and a positioning block, the problem of installation failure caused by piston tilting was solved, achieving smooth piston reset and firm positioning, and improving assembly reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN MAIZE PRECISION MASCH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
The existing piston is prone to tilting during installation, which can lead to installation failure. Specialized assembly equipment needs to be designed to avoid this phenomenon.
A piston assembly device for automotive brakes was designed. By setting up an installation mechanism and utilizing the cooperation of a reset plate, a positioning block, and a screw, the piston can be smoothly reset and firmly positioned, avoiding tilting.
This effectively prevents the piston from tilting during the reset process, ensuring the reliability and success rate of installation and improving the reliability of the device.
Smart Images

Figure CN224373885U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of piston assembly equipment technology, and more specifically, to a piston assembly equipment for automobile brakes. Background Technology
[0002] Automotive brakes are the braking devices of automobiles. Almost all automotive brakes are friction-type, which can be divided into two main categories: drum brakes and disc brakes. In drum brakes, the rotating element in the friction pair is the brake drum, whose working surface is a cylindrical surface. In disc brakes, the rotating element is the rotating brake disc, with its end face as the working surface. Automotive brakes are components that generate a force (braking force) that resists the movement or tendency of a vehicle to move. This also includes devices in auxiliary braking systems. The piston is one of the most important components in automotive brakes.
[0003] Existing pistons are generally installed by manually pushing them in. While this method is convenient, it is prone to causing the piston to tilt and leading to installation failure. Therefore, a device specifically designed for piston assembly is needed to complete the piston assembly. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a piston assembly device for automobile brakes. By adding an installation mechanism, the piston tilting during the reset process is effectively avoided, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a piston assembly device for an automobile brake, comprising a connecting rod, a groove inside the connecting rod, threaded holes at the top and bottom of the connecting rod, a first screw rod being disposed inside both threaded holes, a baffle plate at the bottom of the first screw rod, a movable rod at the bottom of the baffle plate, and an installation mechanism at the top of the screw rod.
[0006] In a preferred embodiment, the installation mechanism includes a reset plate, a first guide plate is provided on one side of the reset plate, and a fixing plate is provided at the bottom of the reset plate.
[0007] In a preferred embodiment, one side of the fixing plate is connected to one side of the connecting rod, the bottom of the fixing plate has an installation groove, and the top of the fixing plate has a threaded through hole.
[0008] In a preferred embodiment, a fixing block is provided inside the mounting groove, a connecting ring is provided on the fixing block, and a positioning block is provided at the bottom of the connecting ring.
[0009] In a preferred embodiment, the fixing block has a through hole inside, two positioning beads are disposed inside the through hole, a positioning plate is disposed between the two positioning beads, and a second guide plate is disposed at the bottom of the positioning plate.
[0010] In a preferred embodiment, a second screw is provided inside the threaded through hole, the bottom of the second screw is connected to the positioning plate, and a rotating block is provided at the top of the second screw.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] By designing an installation mechanism, the piston reset process is achieved by simply rotating the movable rod to move the first screw, forcing the reset plate within the installation mechanism to contact and compress the piston, thus smoothly pushing it into the installation position. This reset method effectively prevents the piston from tilting during the reset process. Furthermore, the addition of a positioning block within the installation mechanism ensures that the piston is securely positioned within the brake during installation, preventing accidental displacement and piston reset failure. The positioning block is installed by using a rotating block to move the second screw, which, in conjunction with a positioning bead, limits the position of the connecting ring. This allows for easy replacement of the positioning block based on actual usage. These rational design features significantly improve the reliability of the device during use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0015] Figure 3 This is a schematic diagram of the installation mechanism of this utility model.
[0016] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.
[0017] The attached figures are labeled as follows: 1. Connecting rod; 2. First screw; 3. Baffle; 4. Movable rod; 5. Reset plate; 6. First guide plate; 7. Fixing plate; 8. Fixing block; 9. Connecting ring; 10. Positioning block; 11. Positioning bead; 12. Positioning plate; 13. Second guide plate; 14. Second screw; 15. Rotating block. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] As attached Figure 1-4 The illustrated piston assembly device for an automotive brake includes a connecting rod 1 with a groove inside. The connecting rod 1 has threaded holes at both its top and bottom, and a first screw 2 is disposed within both threaded holes. The threaded holes and groove allow the first screw 2 to move smoothly within the connecting rod 1. A baffle 3 is located at the bottom of the first screw 2, and a movable rod 4 is located at the bottom of the baffle 3. The baffle 3 prevents the connecting rod 1 from moving further, while the movable rod 4 allows the user to adjust the position of the first screw 2. A mounting mechanism is located at the top of the screw.
[0020] As attached Figure 1 , 2 As shown in Figures 3 and 4, the installation mechanism includes a reset plate 5. The bottom of the reset plate 5 is connected to the first screw 2 via a bearing. A first guide plate 6 is provided on one side of the reset plate 5. The reset plate 5 is moved and guided by the addition of the first guide plate 6. A fixing plate 7 is provided at the bottom of the reset plate 5. One side of the fixing plate 7 is connected to one side of the connecting rod 1. An installation groove is opened at the bottom of the fixing plate 7. A threaded through hole is opened at the top of the fixing plate 7. A fixing block 8 is provided inside the installation groove. A connecting ring 9 is provided on the fixing block 8. A positioning block 10 is provided at the bottom of the connecting ring 9. A through hole is opened inside the fixing block 8. Two positioning beads 11 are provided inside the through hole. A positioning plate 12 is provided between the two positioning beads 11. A second guide plate 13 is provided at the bottom of the positioning plate 12. The positioning beads 11 and the positioning plate 12 cooperate to position the connecting ring 9 and limit the position of the positioning block 10.
[0021] As attached Figure 4 As shown, a second screw 14 is provided inside the threaded through hole. The bottom of the second screw 14 is connected to the positioning plate 12 through a bearing. The top of the second screw 14 is provided with a rotating block 15. The addition of the rotating block 15 makes it convenient for the user to adjust the second screw 14 to drive the positioning plate 12 to move.
[0022] The working principle of this utility model is as follows: When using this device, firstly, rotate the positioning block 10 of appropriate size according to the specifications of the brake. After selection, the positioning block 10 is sent into the mounting groove at the bottom of the fixing plate 7 through the connecting ring 9. Then, the rotating block 15 uses the second screw 14 to drive the positioning plate 12 down, pushing the positioning bead 11 out of the through hole in the fixing block 8 and contacting the connecting ring 9 to restrict the position of the connecting ring 9. At this point, the installation of the positioning block 10 is completed. Then, the fixing plate 7 and the reset plate 5 can be placed in the corresponding piston mounting position inside the brake. After placement, the positioning block 10 at the bottom of the fixing plate 7 enters the hole groove in the brake and is positioned. Then, the user only needs to select the movable rod 4 to drive the first screw 2 to move and force the reset plate 5 to squeeze the piston to achieve the reset of the piston.
[0023] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0024] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0025] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A piston assembly device for an automotive brake, comprising a connecting rod (1), characterized in that: The connecting rod (1) has a groove inside, and threaded holes are provided at the top and bottom of the connecting rod (1). A first screw (2) is provided inside the two threaded holes. A baffle (3) is provided at the bottom of the first screw (2). A movable rod (4) is provided at the bottom of the baffle (3). An installation mechanism is provided at the top of the screw.
2. The piston assembly equipment for automobile brakes according to claim 1, characterized in that: The installation mechanism includes a reset plate (5), a first guide plate (6) is provided on one side of the reset plate (5), and a fixing plate (7) is provided at the bottom of the reset plate (5).
3. The piston assembly equipment for automobile brakes according to claim 2, characterized in that: One side of the fixing plate (7) is connected to one side of the connecting rod (1). The bottom of the fixing plate (7) is provided with an installation groove, and the top of the fixing plate (7) is provided with a threaded through hole.
4. The piston assembly equipment for automobile brakes according to claim 3, characterized in that: A fixing block (8) is provided inside the mounting slot, a connecting ring (9) is provided on the fixing block (8), and a positioning block (10) is provided at the bottom of the connecting ring (9).
5. The piston assembly equipment for automobile brakes according to claim 4, characterized in that: The fixing block (8) has a through hole inside, and two positioning beads (11) are arranged inside the through hole. A positioning plate (12) is arranged between the two positioning beads (11), and a second guide plate (13) is arranged at the bottom of the positioning plate (12).
6. The piston assembly equipment for automobile brakes according to claim 3, characterized in that: A second screw (14) is provided inside the threaded through hole. The bottom of the second screw (14) is connected to the positioning plate (12), and a rotating block (15) is provided on the top of the second screw (14).