TWI583509B - Disc Brake Piston Reset Tool - Google Patents

Description

Disc brake piston reset tool

The present invention relates to the field of special tools for automobile repair, and more particularly to a piston resetting tool for a disc brake, which is used for pressing a piston of a disc brake when replacing a disc brake device , return the piston to the initial position inside the caliper.

The disc brake mainly comprises a brake disc and a caliper, wherein the brake disc is mounted on the axle of the vehicle, and the caliper is mounted on the suspension of the vehicle and adjacent to the brake disc, and the caliper has two The opposite piece and the second piston are respectively opposite to the two sides of the brake disc, and each of the pieces is respectively provided with a brake piece on one side of the adjacent brake disc, and each piston is respectively disposed inside the caliper Cylinder, each piston can be reciprocally displaced in each cylinder, and one end of each piston is adjacent to each of the blades. When the brake pedal is pressed, the fluid flows to the cylinder inside the caliper to push the piston and displace the piece. The brake pads of the piece are respectively pressed against the two sides of the brake disc, and the rotation speed between the brake pad and the brake disc reduces the rotation speed of the wheel axle, thereby stopping the rotation of the wheel.

The relative friction between the brake pad and the brake disc will cause the brake pad to wear gradually. As the disc brake repeatedly performs the wheel deceleration/stop for a period of time, so that the thickness of the brake pad is lower than the safe thickness, it is necessary to replace the new blade. Disc brakes maintain proper braking force to avoid the risk of brake failure.

To replace the disc brakes, first remove the calipers, so that each blade leaves the two sides of the brake disc, remove the pieces, and then enter the special two pistons with special special tools. Between the use of the special tool to push each piston, return each piston to the initial position in the cylinder, and then remove the special tool, you can install a new piece of the caliper, but for the shift Conventional tools for pistons are inconvenient to use and have low reliability in shifting piston displacement.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a disc brake piston resetting tool for replacing a piston of a disc brake device for pressing a piston of a disc brake device to return the piston to an initial position inside the caliper.

In order to meet the foregoing objectives, the present invention is a disc brake piston resetting tool, comprising a main body, a first pressure plate, a second pressure plate and a holding column, wherein the main body side is in contact with the first pressure plate, The second pressure plate is disposed on the other side of the main body, and the holding column is in contact with the front end of the main body; A first chamber, a second chamber and a connecting passage are formed in the main body, the connecting passage is connected to the first chamber and the second chamber, the first chamber extends to the front end of the main body, and the second chamber extends to the main body An adjacent side of the second pressure plate, the main body is pivotally disposed with a tilting member in the second indoor portion, the second pressing plate is in contact with the tilting member, and the tilting member is configured to sway the second pressure plate displacement ; A cylinder chamber and a screwing chamber are formed in the holding column, and the cylinder chamber communicates with the screwing chamber. The rear end of the cylinder chamber communicates with the first chamber, and a cylinder is pivoted inside the cylinder chamber. The first chamber, the connecting passage and the second chamber are filled with a turbulent fluid between the push block and the swaying member, the screwing chamber is screwed to a screw, and the front end of the screw protrudes from the front end of the holding column Externally, the rear end of the screw abuts against the front end of the push block, and the screw is moved to move the push block toward the first chamber, and the push block pushes the fluid, and the fluid shakes the displacement of the mover.

a disc brake piston resetting tool as described above, wherein the push block is adjacent to a rear end of the first chamber, and is provided with a first pad, the first pad being adjacent to the first chamber End recess The first chamber is recessed, and the second member is disposed on a side adjacent to the connecting passage, and the second block is recessed in a second chamber on a side of the adjacent connecting passage, the fluid is filled The first chamber and the second chamber.

The disc brake piston resetting tool as described above, wherein the first pressure plate is provided with a first auxiliary plate on the outer side, and the second pressure plate is provided with a second auxiliary plate on the outer side, according to the first auxiliary plate. And the second auxiliary plate presses the piston of the disc brake to reset.

In the above-described disc brake piston resetting tool, the first pressure plate penetrates through the two first through holes, and the first auxiliary plate protrudes from the first convex portions, and each of the first convex portions respectively pivots into the first first portion The first auxiliary plate is connected to the first pressure plate, the second pressure plate is inserted through the second second hole, and the second auxiliary plate is provided with two second protrusions, and the second protrusions are respectively respectively The second auxiliary holes are connected to the second pressure plate.

a disc brake piston resetting tool as described above, wherein each of the first protrusions is respectively sleeved with a first ring, the first ring is a ring body made of an elastic material, and the first The inner peripheral wall of the receiving hole and the first convex portion are pressed against the first connecting ring, thereby improving the reliability of the first auxiliary plate and the first pressing plate; each of the second convex portions is respectively sleeved a second ring, the second ring is a ring body made of an elastic material, and the inner peripheral wall of the second hole and the second protrusion are pressed against the second ring, thereby improving the second The reliability of the auxiliary plate being connected to the second pressure plate.

The disc brake piston resetting tool as described above, wherein the main body protrudes from a side of the second pressure plate to form a tubular short column, and the main body is provided with a limiting ring on the short column, the limiting ring Extending the two restricting portions on the inner edge of the ring, each of the restricting portions is opposite to each other, and each of the restricting portions is linear in an edge adjacent to a center of the limiting ring, and the tilting member is adjacent to the connecting channel One end of the radial expansion forms a cap, the other end of the tilting member is pivoted to the short post and the limiting ring, the outer diameter of the cap is larger than the inner diameter of the limiting ring, and the tilting member is on both sides Each of the restricting portions is formed with a flat surface, and the restricting ring is configured to form a stop for the cap to restrict the stroke of the displacement of the swinging member, and each of the restricting portions restricts the swinging member from rotating.

The disc brake piston resetting tool as described above, wherein the screw forms a polygonal sway at the front end.

The disc brake piston resetting tool as described above, wherein the front end of the screw penetrates a through hole in a radial direction, and a rod member is inserted through the through hole, so that the rod member swings the screw to rotate.

The disc brake piston resetting tool as described above, wherein the main body protrudes from the side adjacent to the first pressure plate with an engaging portion, and the engaging portion is sleeved with an elastic ring, and the elastic ring is made of an elastic material. a circular body, the first pressure plate is inserted through a socket, the engaging portion is inserted into the insertion hole, and the main body is connected to the first pressure plate, and an inner circumferential wall of the insertion hole and the engagement portion are pressed against the elastic ring The reliability of the positioning of the first pressure plate is improved by the friction between the elastic ring and the connecting portion and the first pressure plate.

(1) ‧‧‧ Subject

(11) ‧‧‧Connecting Department

(12)‧‧‧Flexible ring

(13) ‧ ‧ first room

(14) ‧ ‧ second room

(15)‧‧‧Connected channels

(16)‧‧‧ Short column

(17) ‧‧‧Restricted ring

(172) ‧ ‧ Restrictions

(18)‧‧‧掣动

(182)‧‧‧ Hats

(184) ‧ ‧ plane

(186)‧‧‧Second pad

(188) ‧ ‧ second room

(2) ‧‧‧First pressure plate

(21)‧‧‧ jack

(22)‧‧‧First auxiliary board

(23) ‧‧‧ first hole

(24) ‧‧‧first convex

(25) ‧ ‧ first ring

(3) ‧‧‧Second platen

(31) ‧‧‧Post

(32)‧‧‧Second auxiliary board

(33)‧‧‧Second hole

(34) ‧‧‧second convex

(35) ‧‧‧Secondary ring

(4) ‧ ‧ holding column

(41)‧‧‧Cylinder room

(42)‧‧‧ screwing room

(43) ‧‧‧ push block

(432)‧‧‧First pad

(434) ‧ ‧ first room

(44)‧‧‧ screw

(442) ‧‧‧掣部

(444)‧‧‧Perforation

(45) ‧‧‧ rods

(9)‧‧‧ calipers

(91) ‧‧‧ Space

(92) ‧‧‧Fixed Department

(93) ‧‧‧Pistons

(94) ‧‧‧First Piston

(95)‧‧‧Second Piston

The first figure is a perspective view of the first embodiment of the present invention.

The second drawing is an exploded perspective view of the first embodiment of the present invention.

The third drawing is a cross-sectional view of the first embodiment of the present invention.

The fourth figure is a schematic view showing the state of use of a piston of a disc brake using a first embodiment of the present invention.

The fifth figure is a use of the piston of another type of disc brake using the embodiment of the present invention. State diagram.

Figure 6 is a cross-sectional view showing a second embodiment of the present invention.

Figure 7 is a perspective exploded view of the third embodiment of the present invention.

The eighth drawing is a plan view of the third embodiment of the present invention.

As shown in the first to third figures, the first embodiment of the disc brake piston resetting tool of the present invention comprises a main body (1), a first pressure plate (2), a second pressure plate (3) and a holding a column (4), wherein one side of the main body (1) is in contact with the first pressure plate (2), and the second pressure plate (3) is disposed on the other side of the main body (1), the holding column (4) and The front end of the main body (1) is connected.

The body (1) protrudes from a side adjacent to the first pressure plate (2) with an engaging portion (11), and the connecting portion (11) is sleeved with an elastic ring (12), and the elastic ring (12) is rubber or a circular body made of silicone or other similar material having elasticity, the first pressure plate (2) is inserted through a socket (21), and the connecting portion (11) is inserted into the insertion hole (21), so that the main body (1) Adjacent to the first pressure plate (2), and the inner peripheral wall of the insertion hole (21) is pressed against the elastic portion (12) opposite to the engaging portion (11) by the elastic ring (12) and the engaging portion ( 11) and the friction between the first pressure plate (2) improves the reliability of the positioning of the first pressure plate (2), so that the first pressure plate (2) is not easily separated from the engaging portion (11) and is not easily rotated.

A first chamber (13), a second chamber (14) and a connecting passage (15) are formed inside the main body (1), and the connecting passage (15) communicates with the first chamber (13) and the second chamber (14) The first chamber (13) extends to the front end of the main body (1), and the second chamber (14) extends to a side of the main body (1) adjacent to the second pressure plate (3), the main body (1) a tubular short column (16) protruding from a side of the second pressure plate (3), the main body (1) is provided with a limiting ring (17) on the short column (16), the limiting ring ( 17) projecting two restricting portions (172) on the inner edge of the ring, each of the restricting portions (172) facing each other, and each of the restricting portions (172) is adjacent to the center of the limiting ring (17) The rim is linear, and the body (1) is pivotally disposed inside the second chamber (14) with a ram (18), the ram (18) is a columnar body, and the ram (18) is adjacent to Radially expanding at one end in the direction of the connecting passage (15) to form a cap (182), the other end of the tilting member (18) pivoting to the stud (16) and the limiting ring (17), the cap The outer diameter of the head (182) is larger than the inner diameter of the limiting ring (17), and the swaying member (18) forms a plane (184) on the sides of each of the restricting portions (172). When the swaying member (18) is displaced outward, the limiting ring (17) forms a stop for the cap (182), restricting the stroke of the displacement of the swaying member (18), and the limiting ring (17) is The restricting portion (172) restricts the damper (18) so that the swaying member (18) cannot rotate.

The second pressure plate (3) protrudes from a side of the main body (1) with a post (31), and the post (31) is screwed into the tilting member (18), according to the second pressing plate ( 3) is connected to the swaying member (18), and when the swaying member (18) slides in the direction of the second pressure plate (3), the second pressure plate (3) is swung away from the main body (1) Displacement, and because the restriction ring (17) limits the rotation of the swaying member (18), the convenience of combining/disengaging the second pressure plate (3) with the swaying member (18) is improved.

The holding column (4) is an elongated cylinder for providing a hand-held operation, the rear end of the holding column (4) is screwed to the front end of the main body (1), and the inside of the holding column (4) is formed along the long axis direction. a cylinder chamber (41) and a screwing chamber (42) communicating with the screw chamber (42), the rear end of the cylinder chamber (41) being in communication with the first chamber (13), A cylinder block (41) is internally disposed in the cylinder chamber (41), and the cylinder chamber (41), the first chamber (13), the connecting passage (15) and the second chamber (14) are disposed on the push block ( 43) and the damper (18) is filled with a turbulent fluid (not shown), which may be hydraulic oil or air or other similar liquid or gas that can be used to transmit pressure, especially hydraulic oil. For the preferred implementation of the fluid, the screwing chamber (42) is screwed to a screw (44), and the front end of the screw (44) protrudes outside the front end of the holding column (4), and the rear end of the screw (44) Abutting against the front end of the push block (43), according to which the screw (44) is rotated to cause the screw (44) to be displaced rearward, the screw (44) displacing the push block (43) toward the first chamber (13) such that the push block (43) pushes the fluid, and the fluid moves the displacement of the mover (18), the screw (44) forming a polygonal swaying portion (442) at the front end, and providing a tool such as a wrench to clamp the swaying portion (442) to facilitate the rotation of the screw (44), the screw (44) at the front end along the diameter Passing through a through hole (444), a rod member (45) is inserted through the through hole (444), and the rod member (45) is rotated by the rod member (45), and the tilting portion (442) is coupled thereto. The rods (45) can be selected or coexisted as needed.

After the caliper of the disc brake is removed, the disc of the disc brake is removed from both sides of the brake disc, and the pieces are removed, the piston of the disc brake can be used in the first embodiment. The piston retracts to the initial position inside the caliper.

The fourth figure illustrates the use state of the disc brake for the caliper having only the piston on one side, and the body (1) enters the caliper (9) to provide a space through which the brake disc (not shown) passes (the fourth figure). 91), and the first pressure plate (3) is placed against the caliper (9) on the side of the space (91) without a fixing portion (92) of the piston, and the second pressure plate (3) is coupled to the caliper ( 9) The piston (93) on the other side of the space (91) is opposite, and then, as shown in the third figure, rotate the screw (44) so that the screw (44) pushes the push block (43) toward the Displacement in the direction of the passage (15), the push block (41) pushes fluid filled in the cylinder chamber (41), the first chamber (13), the connecting passage (15) and the second chamber (14), The fluid presses the swaying member (18) to move the second pressure plate (3) toward the piston (93), and presses the piston (93) to gradually return to the initial position inside the caliper (9), and then rotates the reverse direction. The screw (44) releases the abutment of the push block (43) by the screw (44), thereby releasing the pressure of the fluid on the damper (18), and moving the body (1) out of the space (91) , the second pressure plate (3) can be reversely pressed to make the second pressure plate (3) The detent member (18) and said push block (43) is reset.

The fifth figure illustrates the use of a piston for both sides of the caliper using the first embodiment. In the state of use of the disc brake, the main body (1) enters a caliper (9) to provide a space (91) through which a brake disc (not shown) passes, and the first pressure plate (3) is placed against the caliper (9). a first piston (94) on one side of the space (91), the second platen (3) being opposite the second piston (95) of the caliper (9) on the other side of the space (91), and then , as shown in the third figure, rotate the screw (44) so that the screw (44) pushes the push block (43) toward the connecting passage (15), and the push block (41) is pushed and filled. a fluid of the cylinder chamber (41), the first chamber (13), the connecting passage (15) and the second chamber (14), the fluid pressing the rocking member (18) to interlock the second pressure plate (3) toward the The second piston (95) is displaced and urges the second piston (95) to gradually return to the initial position inside the caliper (9). At this time, the second piston (95) reacts to the second pressure plate (3). The force causes the first pressure plate (3) to relatively press the first piston (94) to gradually return to the initial position inside the caliper (9), and then rotate the screw (44) in the opposite direction to release the screw (44) The abutment of the push block (43) releases the fluid to the stirrup (18) Pressing the body (1) out of the space (91), the second pressure plate (3) can be reversely pressed, and the second pressure plate (3), the damper (18) and the push block (43) ) Reset.

The second embodiment of the present invention is changed from the first embodiment, and the second embodiment is the same as the first embodiment. The description of the second embodiment is different from that of the first embodiment. The push block (43) is adjacent to the rear end of the first chamber (13), further provided with a first pad (432) adjacent to the rear end of the first chamber (13) A first chamber (434) is recessed, and a second pad (186) is further disposed on a side of the adjacent channel (15), and the second pad (186) is adjacent to the adjacent device. One side of the channel (15) is recessed into a second chamber (188), a fluid for turbulence (not shown) is filled and fills the first chamber (434) and the second chamber (188), thereby improving The thrust block (43) and the stability of the tilting direction of the tilting member (18).

The third embodiment of the present invention is changed from the first embodiment, and the third embodiment is the same as the configuration of the first embodiment, and the description is not repeated; as shown in the seventh and eighth embodiments, the third embodiment is different from the third embodiment. The first embodiment is mainly characterized in that a first auxiliary plate (22) is further disposed on the outer side of the first pressure plate (2), and a second auxiliary plate (32) is further disposed on the outer side of the second pressure plate (3). A first plate (2) extends through the two first holes (23), and the first auxiliary plate (22) protrudes from the first protrusions (24), and each of the first protrusions (24) respectively pivots into the first portion The first auxiliary plate (22) is connected to the first pressing plate (2), and each of the first convex portions (24) is respectively sleeved with a first connecting ring (25). A ring (25) is a ring body made of rubber or silicone or other similar material having elasticity, and the inner peripheral wall of the first through hole (23) is relatively tight with the first convex portion (24). a ring (25), the first auxiliary plate (22) and the first portion are improved by friction between the first connecting ring (25) and the first convex portion (24) and the first pressing plate (2) The reliability of the contact of a pressing plate (2) is such that the first auxiliary plate (22) is not easily separated from the first connecting plate (2), and the second pressing plate (3) penetrates through the second connecting holes (33). The second auxiliary plate (32) is provided with two second convex portions (34), and each of the second convex portions (34) is respectively pivoted into each of the second connecting holes (33), so that the first The auxiliary plate (32) is connected to the second pressing plate (3), and each of the second convex portions (34) is respectively sleeved with a second connecting ring (35), and the second connecting ring (35) is rubber or silicone or Another annular body formed of a similar material having elasticity, and the inner peripheral wall of the second connecting hole (33) and the second convex portion (24) are urged against the second connecting ring (35) by the second The friction between the ring (35) and the second protrusion (34) and the second platen (3) improves the reliability of the second auxiliary plate (32) and the second plate (3). The second auxiliary plate (32) is not easily separated from the second plate (3).

When the piston of the disc brake is pressed in the third embodiment, the third embodiment is used to pressurize the piston by the first auxiliary plate (22) and the second auxiliary plate (32), and the third embodiment is installed or removed. The first auxiliary board (22) and the second auxiliary board (32) are selected to be provided with the first auxiliary board (22) and the second auxiliary board (32) of different widths and/or thicknesses, so that the third embodiment can be It is suitable for the operation of pressing the piston to reset the calipers of different specifications.

Rotating the screw (44) to displace or move the screw (44) toward the body (1) The main body (1) can complete the operation of pressing the piston to be reset, and the operation is easy, and the fluid is used as a medium for transmitting the force, and the reliability of the displacement of the displacement piston is high.

(1) ‧‧‧ Subject

(2) ‧‧‧First pressure plate

(3) ‧‧‧Second platen

(4) ‧ ‧ holding column

(44)‧‧‧ screw

(45) ‧‧‧ rods

Claims (9)

A disc brake piston resetting tool, the disc brake mainly comprises a brake disc and a caliper, wherein the caliper is installed in a suspension of the vehicle and adjacent to the brake disc, the caliper has two opposite orders a sheet and a second piston, each of which is opposite to the two sides of the brake disc, and each of which is provided with a brake pad on one side of the adjacent brake disc, and each piston is respectively disposed in the two cylinders inside the caliper; When the sheet is used, the resetting tool is used for pressing the piston to return the pistons to the inside of the caliper; the resetting tool is composed of a main body, a first pressing plate, a second pressing plate and a holding column, wherein the main body One side is connected to the first pressure plate, the second pressure plate is disposed on the other side of the main body, and the holding column is in contact with the front end of the main body; the first body, a second room and a connecting passage are formed inside the main body, The first chamber extends to the front end of the main body, the second chamber extends to a side of the main body adjacent to the second pressure plate, and the main body is located in the second indoor portion Pivoting a rocking member, the second pressure plate and the rocking member Receiving, the swaying member is configured to move the second platen displacement; the column is an elongated column for providing a hand-held operation, and the cylinder has a cylinder chamber and a screwing chamber, the cylinder chamber and the cylinder chamber The screw chamber is connected back and forth, and the rear end of the cylinder chamber is in communication with the first chamber. A chamber is pivoted inside the cylinder chamber, the cylinder chamber, the first chamber, the connecting passage and the second chamber are in the pushing block. And the turbulent fluid is filled between the cockings, the screwing chamber is screwed to a screw, the front end of the screw protrudes outside the front end of the holding column, and the rear end of the screw abuts against the front end of the pushing block, according to the screw The push block is displaced in the direction of the first chamber, the push block pushes the fluid, and the fluid shakes the displacement of the mover. The disc brake piston resetting tool according to claim 1, wherein the push block is adjacent to a rear end of the first chamber, and a first pad is disposed, and the first pad is adjacent to the first block. First room The rear end is recessed into a first chamber, and the second member is disposed on a side adjacent to the connecting passage, and the second block is recessed in a second chamber on a side of the adjacent connecting passage. The fluid fills the first chamber and the second chamber. The disc brake piston resetting tool of claim 1, wherein the first pressure plate has a first auxiliary plate on the outer side, and the second pressure plate has a second auxiliary plate on the outer side. The first auxiliary plate and the second auxiliary plate press the piston of the disc brake to be reset. The disc brake piston resetting tool of claim 3, wherein the first pressure plate penetrates the first first hole, the first auxiliary plate protrudes from the first convex portion, and each of the first convex portions The second auxiliary plate is connected to the first pressure plate, and the second pressure plate is connected to the second pressure plate. The second auxiliary plate protrudes from the second second hole. The second protrusions are respectively pivoted into the second connection holes, and the second auxiliary plate is connected to the second pressure plate. The disc brake piston resetting tool of claim 4, wherein each of the first protrusions is respectively sleeved with a first ring, and the first ring is a torus having a resilient material. And the inner peripheral wall of the first connecting hole and the first convex portion are pressed against the first connecting ring, thereby improving the reliability of the first auxiliary plate contacting the first pressing plate; each of the second convex portions The second ring is a ring body made of an elastic material, and the inner peripheral wall of the second hole and the second protrusion are pressed against the second ring. This improves the reliability of the second auxiliary plate being in contact with the second pressure plate. The disc brake piston resetting tool of claim 1, wherein the main body protrudes from a side of the second pressure plate to form a tubular short column, and the main body is screwed to the short column. a ring, the restricting ring projecting two restricting portions on the inner edge of the ring, each of the restricting portions facing each other, and each of the restricting portions is linear in an edge adjacent to a center of the limiting ring, and the tilting member is adjacent to each other One end of the connecting channel is radially expanded to form a cap, and the other end of the tilting member is pivoted a short column and the limiting ring, the outer diameter of the cap is larger than the inner diameter of the limiting ring, and the swaying member forms a plane on each side of the limiting portion, so that the limiting ring forms the cap Blocking, limiting the stroke of the displacement of the swaying member, and each of the limiting portions restricts the swaying member from rotating; the second pressing plate protrudes from a side adjacent to the main body, and the connecting rod is screwed into the swaying Pieces. The disc brake piston resetting tool of claim 1, wherein the screw forms a polygonal tilting portion at the front end, such as the disc brake piston resetting tool of claim 1 The screw forms a polygonal sway at the front end. The disc brake piston resetting tool according to claim 1, wherein the front end of the screw penetrates a through hole in a radial direction, and a rod member is inserted through the through hole, so that the rod member swings the screw to rotate. The disc brake piston resetting tool of claim 1, wherein the main body protrudes from a side adjacent to the first pressure plate, and the engaging portion is provided with an elastic ring, and the elastic ring has an elastic ring. a circular body formed of an elastic material, the first pressure plate is inserted through a socket, the engaging portion is inserted into the insertion hole, and the main body is connected to the first pressure plate, and an inner peripheral wall of the insertion hole is opposite to the engagement portion The elastic ring is pressed tightly, and the reliability of positioning of the first pressure plate is improved by the friction between the elastic ring and the connecting portion and the first pressure plate.