Brake caliper piston pressing device and pressing method

Abstract

The invention relates to the technical field of welding, in particular to a brake caliper piston pressing device and a pressing method.The brake caliper piston pressing device comprises a lower die plate, an upper die plate and a telescopic piece, the upper die plate is provided with pressing assemblies and welding assemblies, and the pressing assemblies and the welding assemblies are arranged in a one-to-one correspondence and adjacent mode; the lower edge of the pressing assembly is lower than the lower edge of the welding assembly so as to abut against a workpiece in advance. The pressing assembly comprises a fixing plate and a pressing plate which are arranged at intervals, and an elastic piece is connected between the fixing plate and the pressing plate. A hot riveting rod is arranged at the output end of the welding assembly, and a hot riveting head is eccentrically connected to the side, facing the bearing clamping fixture, of the hot riveting rod. The lower edge of the pressing assembly is lower than the lower edge of the welding assembly, a workpiece can be pressed and fixed before the welding assembly welds the workpiece, and therefore the stability of the welding assembly when the welding assembly welds the workpiece is guaranteed; the hot riveting head on the hot riveting rod is eccentrically arranged, so that contact between the hot riveting rod and the inner wall of the product can be avoided, and the product is prevented from being scratched.

Description

Technical Field

[0001] The invention relates to the technical field of calipers, in particular to a brake caliper piston clamping device and a clamping method for the brake caliper piston clamping device. Background Art

[0002] The brake system is one of the key components to ensure the safe driving of the vehicle, and the brake caliper is an important component, and its performance directly affects the braking effect of the vehicle. The main function of the brake caliper is to transmit pressure to the piston in the brake caliper through the hydraulic system when the driver steps on the brake pedal, so that the piston pushes the brake pads tightly against the brake disc, thereby generating friction to achieve the purpose of deceleration or stopping. Therefore, the design and performance of the brake caliper piston clamping device are crucial to ensure the efficiency and reliability of the brake system.

[0003] In actual use, the braking effect of the brake caliper on the brake disc is related to the contact area between the two. However, due to the flatness and installation level of the brake caliper, the contact surface of the brake caliper and the brake disc is difficult to match, which is not conducive to the braking of the brake caliper on the brake disc. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and provides a brake caliper piston clamping device and a clamping method. The specific technical scheme is as follows:

[0005] The brake caliper piston clamping device is used to clamp the brake disc, and includes two clamping parts symmetrically distributed on both sides of the brake disc, and the two clamping parts are connected by a connecting column to form a whole;

[0006] The clamping part includes a shell and a caliper spaced between the shell and the brake disc, the shell has a piston cavity, the caliper has a movable cavity, a connecting piece is connected between the shell and the caliper, one end of the connecting piece is slidably arranged in the piston cavity, and the other end of the connecting piece has a ball head, and the ball head is embedded in the movable cavity and rollingly connected thereto.

[0007] As a further technical solution of the present invention, the connecting member includes a piston and a connecting rod, the piston has a notch at one end facing the connecting rod, one end of the connecting rod is slidably connected to the notch to form a telescopic structure, and the ball head is connected to the other end of the connecting rod.

[0008] As a further technical solution of the present invention, a plurality of groups of springs 1 are connected between the caliper and the housing, and the plurality of groups of springs 1 are evenly distributed at the four corners of the caliper.

[0009] As a further technical solution of the present invention, a socket is provided in the connecting rod, a rod is inserted in the socket, a plurality of groups of through holes are provided in the inner circumference of the ball head, one end of the through hole is connected to the active cavity, the other end of the through hole extends to connect to the socket, a resistance rod is inserted in the through hole, one end of the resistance rod is inserted into the socket, and the rod is driven by the piston to move deep into the socket and drive the resistance rod to resist the inner wall of the active cavity.

[0010] As a further technical solution of the present invention, the socket is provided with a radially outward extension cavity, the insertion rod is connected to an epitaxial wafer, the epitaxial wafer is inserted into the extension cavity, a second spring is arranged in the extension cavity, the second spring has an elastic force and forces the insertion rod to always contact the piston.

[0011] As a further technical solution of the present invention, the insertion end of the insertion rod has a pointed cone, the interference rod has a head and a tail, the head of the interference rod is a hemisphere and is inserted into the socket to cooperate with the pointed cone end of the insertion rod.

[0012] As a further technical solution of the present invention, the tail of the interference rod is a sharp angle.

[0013] As a further technical solution of the present invention, the interference rod and the through hole are connected via a spring three, and the spring three has an elastic force to force the tail of the interference rod to be hidden in the through hole under normal conditions.

[0014] The clamping method of the brake caliper piston clamping device has the following specific steps:

[0015] S1, full coverage;

[0016] Inject oil into the piston cavity and drive the connector and the caliper to move toward the brake disc as a whole. Use the movable cavity and the ball head to adjust the clamping direction of the caliper around the ball head to achieve full coverage of the caliper and the brake disc.

[0017] S2, compaction;

[0018] Continue to drive the piston in the piston chamber toward the brake disc. At this time, relative movement occurs between the piston and the connecting rod, prompting the insertion rod to move into the socket. The insertion rod forces the resistance rod to move outward and pierce the inner wall of the socket to limit the relative movement of the ball head and the caliper and compress the brake disc.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) In the present application, through the cooperation of the ball head and the movable cavity, the connecting part and the caliper can be universally adjusted, that is, the caliper can float relative to the connecting part to adapt to the end surface shape of the brake disc, that is, the caliper can be tilted to adapt to the end surface shape of the brake disc to achieve contact surface matching and ensure the clamping effect; at the same time, under normal conditions, the springs distributed at the four corners of the caliper can restore the caliper to and maintain its initial state to facilitate repeated braking.

[0021] (2) In the present application, the connecting piece between the housing and the caliper is a telescopic structure. When the connecting piece is compressed, the head of the insert rod drives the resistance rod to move outward, and the resistance rod can expose the perforation and resist the movable cavity. That is to say, at this time, the relative movement between the ball head and the caliper is restricted, thereby locking the current angle of the caliper to avoid angle changes during braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structural diagram of the brake caliper piston clamping device is shown;

[0023] Figure 2 A schematic structural diagram of the pressing portion is shown;

[0024] Figure 3 A connection diagram of the housing, the caliper and the connector is shown;

[0025] Figure 4 A schematic diagram of the structure of the connecting member is shown;

[0026] Figure 5 A schematic diagram of the internal structure of the connecting rod and the ball head is shown;

[0027] Figure 6 A schematic diagram of the structure of the plunger is shown;

[0028] Figure 7 A schematic structural diagram of the interference rod is shown.

[0029] Description of the drawings: 100, brake disc; 200, clamping part; 210, shell; 211, piston chamber; 220, caliper; 221, movable chamber; 230, spring one; 300, connecting column; 400, connecting piece; 410, piston; 411, recess; 420, connecting rod; 421, socket; 422, extension chamber; 423, spring two; 430, ball head; 431, through hole; 432, resistance rod; spring three (433), spring three; 440, plug rod; 441, epitaxial wafer. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0031] Figure 1 The overall structural diagram of the brake caliper piston clamping device is shown; Figure 2 shows a schematic structural diagram of the pressing portion 200; Figure 1 and Figure 2 In the figure, the brake caliper piston clamping device is used to clamp the brake disc 100, including two clamping parts 200 symmetrically distributed on both sides of the brake disc 100, the two clamping parts 200 are connected by a connecting column 300 to form a whole, and the clamping part 200 includes a shell 210 and a caliper 220 arranged between the shell 210 and the brake disc 100; since the two clamping parts 200 are distributed on both sides of the brake disc 100, in actual use, the two clamping parts 200 can clamp the brake disc 100 from both sides, which can avoid the edge of the brake disc 100 being compressed and bent when a single end face force is applied.

[0032] Figure 3 A connection diagram of the housing 210, the caliper 220 and the connector 400 is shown; Figure 3 In the embodiment, a piston chamber 211 is provided in the housing 210, an active chamber 221 is provided in the caliper 220, a connecting member 400 is connected between the housing 210 and the caliper 220, one end of the connecting member 400 is slidably disposed in the piston chamber 211, and the other end of the connecting member 400 has a ball head 430, the ball head 430 is embedded in the active chamber 221 and is rollingly connected thereto, a plurality of groups of springs 230 are connected between the caliper 220 and the housing 210, and the plurality of groups of springs 230 are evenly distributed at the four corners of the caliper 220; Through the cooperation of the ball head 430 and the movable cavity 221, the connecting member 400 and the caliper 220 can be universally adjusted, that is, the caliper 220 can float relative to the connecting member 400 to adapt to the end surface shape of the brake disc 100, that is, the caliper 220 can be tilted to adapt to the end surface shape of the brake disc 100 to achieve contact surface matching and ensure the clamping effect; at the same time, under normal conditions, the springs 230 distributed at the four corners of the caliper 220 can restore the caliper 220 to and maintain the initial state to facilitate repeated braking.

[0033] Figure 4 shows a schematic structural diagram of a connecting member 400; Figure 4 In the figure, the connecting member 400 includes a piston 410 and a connecting rod 420. The piston 410 has a notch 411 at one end facing the connecting rod 420. One end of the connecting rod 420 is slidably connected to the notch 411 to form a telescopic structure. The ball head 430 is connected to the other end of the connecting rod 420. Since the connecting rod 420 and the piston 410 are allowed to telescope, when the connecting rod 420 drives the caliper 220 to fit the end face of the brake disc 100, the piston 410 continues to move and moves relative to the connecting rod 420.

[0034] Figure 5 A schematic diagram of the internal structure of the connecting rod 420 and the ball head 430 is shown; Figure 6 A schematic diagram of the structure of the insertion rod 440 is shown; Figure 5 and Figure 6 In the embodiment, a socket 421 is provided in the connecting rod 420, and a plug rod 440 is inserted in the socket 421. A plurality of groups of through holes 431 are provided in the circumferential direction of the ball head 430. One end of the through hole 431 is connected to the active cavity 221, and the other end of the through hole 431 extends to connect to the socket 421. A resistance rod 432 is inserted in the through hole 431, and one end of the resistance rod 432 is inserted into the socket 421. The plug rod 440 is driven by the piston 410 to move deep into the socket 421 and drive the resistance rod 432 to resist the inner wall of the active cavity 221. When the caliper 220 fits the end face of the brake disc 100, the connecting rod 420 is restricted as a whole and no longer moves forward. As the piston 410 continues to move forward, the plug rod 440 can be driven to continue to move, and the head of the plug rod 440 drives the resistance rod 432 to move outward, so that the resistance rod 432 can be exposed from the through hole 431 and resist The movable cavity 221, that is, at this time, the relative movement between the ball head 430 and the caliper 220 is restricted, thereby locking the current angle of the caliper 220 to avoid angle changes during braking; the socket 421 has a radially outward extension cavity 422, and an epitaxial wafer 441 is connected to the insertion rod 440, and the epitaxial wafer 441 is inserted into the extension cavity 422. A spring 2 423 is arranged in the extension cavity 422, and the spring 2 423 has an elastic force and forces the insertion rod 440 to always contact the piston 410; due to the setting of the spring 2 423, the insertion rod 440 can always contact the piston 410, and can force the connecting rod 420 and the bottom wall of the recess 411 to have a gap to allow the two to move relative to each other, and the setting of the ball head 430 can allow the insertion rod 440 to be reset multiple times for repeated braking.

[0035] Figure 7 A schematic diagram of the structure of the interference rod 432 is shown; Figure 7In the embodiment, the insertion end of the insertion rod 440 has a pointed cone, and the abutment rod 432 has a head and a tail. The head of the abutment rod 432 is a hemisphere and is inserted into the socket 421 to cooperate with the pointed cone end of the insertion rod 440; and the pointed cone design of the insertion end of the insertion rod 440 can cooperate with the head of the abutment rod 432 and drive the abutment rod 432 to move, so that the tail of the abutment rod 432 is exposed outside the through hole 431 and abuts against the inner wall of the caliper 220, thereby realizing the relative locking of the ball head 430 and the caliper 220; the tail of the abutment rod 432 is a sharp angle; using the abutment rod 432 The sharp corner of the contact rod 432 pierces the inner wall of the movable cavity 221 to ensure the relative restriction effect between the two; the contact rod 432 and the through hole 431 are connected by a spring three 433, and the spring three 433 has an elastic force to force the tail of the contact rod 432 to be hidden in the through hole 431 under normal conditions; the spring three 433 is so designed that, under normal conditions, the tail of the contact rod 432 is hidden in the through hole 431, does not interfere with the relative movement between the contact rod 432 and the caliper 220, and can also reset the contact rod 432 when not under force to facilitate repeated locking.

[0036] The clamping method of the brake caliper piston clamping device has the following specific steps:

[0037] S1, full coverage;

[0038] Inject oil into the piston cavity 211 and drive the connecting member 400 and the caliper 220 to move toward the brake disc 100 as a whole, and use the movable cavity 221 and the ball head 430 to adjust the clamping direction of the caliper 220 around the ball head 430 to achieve full coverage of the caliper 220 and the brake disc 100;

[0039] S2, compaction;

[0040] The piston 410 continues to be driven to move in the piston chamber 211 toward the brake disc 100. At this time, relative movement occurs between the piston 410 and the connecting rod 420, and the insertion rod 440 is prompted to move into the socket 421. The insertion rod 440 is used to force the resistance rod 432 to move outward and pierce the inner wall of the socket 421 to limit the relative movement of the ball head 430 and the caliper 220 and to press the brake disc 100.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A brake caliper piston clamping device, used for clamping a brake disc (100), comprising two clamping parts (200) symmetrically distributed on both sides of the brake disc (100), wherein the two clamping parts (200) are connected via a connecting column (300) to form a whole; It is characterized in that The clamping portion (200) includes a shell (210) and a caliper (220) spaced between the shell (210) and the brake disc (100), the shell (210) having a piston chamber (211), the caliper (220) having an active chamber (221), a connecting piece (400) connected between the shell (210) and the caliper (220), one end of the connecting piece (400) being slidably disposed in the piston chamber (211), the other end of the connecting piece (400) having a ball head (430), the ball head (430) being embedded in the active chamber (221) and being rollingly connected thereto.

2. The brake caliper piston clamping device according to claim 1, characterized in that: The connecting member (400) comprises a piston (410) and a connecting rod (420), wherein one end of the piston (410) facing the connecting rod (420) has a notch (411), one end of the connecting rod (420) is slidably connected to the notch (411) to form a telescopic structure, and the ball head (430) is connected to the other end of the connecting rod (420).

3. The brake caliper piston clamping device according to claim 2, characterized in that: A plurality of groups of springs (230) are connected between the caliper (220) and the housing (210), and the plurality of groups of springs (230) are evenly distributed at four corners of the caliper (220).

4. The brake caliper piston clamping device according to claim 3, characterized in that: The connecting rod (420) is provided with a socket (421), and an insertion rod (440) is inserted into the socket (421). The ball head (430) is provided with a plurality of groups of through holes (431) in the circumferential direction. One end of the through hole (431) is connected to the active cavity (221), and the other end of the through hole (431) extends to connect to the socket (421). A resistance rod (432) is inserted into the through hole (431), and one end of the resistance rod (432) is inserted into the socket (421). The insertion rod (440) is driven by the piston (410) to move toward the depth of the socket (421) and drive the resistance rod (432) to resist the inner wall of the active cavity (221).

5. The brake caliper piston clamping device according to claim 4, characterized in that: The socket (421) has a radially outward extension cavity (422), the insertion rod (440) is connected to an epitaxial wafer (441), the epitaxial wafer (441) is inserted into the extension cavity (422), and a second spring (423) is arranged in the extension cavity (422), and the second spring (423) has an elastic force and forces the insertion rod (440) to always contact the piston (410).

6. The brake caliper piston clamping device according to claim 5, characterized in that: The insertion end of the insertion rod (440) has a pointed cone, the interference rod (432) has a head and a tail, the head of the interference rod (432) is a hemisphere and is inserted into the socket (421) to cooperate with the pointed cone end of the insertion rod (440).

7. The brake caliper piston pressing device according to claim 6, characterized in that: The tail of the interference rod (432) is a sharp corner.

8. The brake caliper piston clamping device according to claim 7, characterized in that: The resisting rod (432) and the through hole (431) are connected via a spring three (433), and the spring three (433) has an elastic force to force the tail of the resisting rod (432) to be hidden in the through hole (431) under normal conditions.

9. The clamping method of the brake caliper piston clamping device according to any one of claims 1 to 8, characterized in that: The specific steps are as follows: S1, full coverage; Oil is injected into the piston cavity (211) to drive the connecting piece (400) and the caliper (220) to move toward the brake disc (100) as a whole, and the caliper (220) is adjusted around the ball head (430) by using the movable cavity (221) and the ball head (430) to adjust the clamping direction of the caliper (220) around the ball head (430) to achieve full coverage of the caliper (220) and the brake disc (100); S2, compaction; The piston (410) is continuously driven to move in the piston chamber (211) toward the brake disc (100). At this time, relative movement occurs between the piston (410) and the connecting rod (420), prompting the insertion rod (440) to move into the socket (421). The insertion rod (440) is used to force the resistance rod (432) to move outward and pierce the inner wall of the socket (421), so as to limit the relative movement of the ball head (430) and the caliper (220) and to press the brake disc (100).

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