TW201914771A - Vehicle piston pusher - Google Patents

Abstract

A vehicle piston pusher, pushing at least a piston back into a piston bore of a clamp, includes a base, a rotation member, a movable plate, and a direction switchable ratchet wrench. The rotation member is rotatably disposed on the base. The rotation member includes an inner barrel and an outer barrel coupled with the inner barrel. The movable plate is provided with an outer surface and an opposite inner surface. The outer surface is applied for contacting at least a piston. The inner surface is provided with a screw pillar which is screwedly connected with the inner barrel along the axis of the rotation member. The direction switchable ratchet wrench if connected with the rotation member for rotating the rotation member, such that the movable plate opens and closes against the movable plate. Therefore, when the movable plate opens against the base, the at least a piston is pushed back into the piston bore.

Description

Vehicle piston press

The present invention relates to a vehicle service tool, and more particularly to a vehicle piston presser for pressing a piston of a caliper of a vehicle for mounting a new one.

Press, in the replacement of the vehicle, it is often necessary to use special tools to push the caliper piston back or push it back into the piston hole, so that there is enough space in the caliper to enable the new lining to be installed. .

However, in the common piston calipers, due to the limited installation space, the user is not easy to install by hand without using special tools, and there is still a risk of injury by hand installation; in addition, the manufacturer has designed the hydraulic tools. The piston is pressed back, but the oil pressure is large, and it is easy to damage the piston, and there is a risk of oil leakage.

Therefore, the conventional tool is not convenient to use in the replacement of the film, and there is still room for improvement.

In order to solve the above problems, the present invention discloses a vehicle piston presser, which rotates a rotating body on a base, and the rotating body can be driven to rotate by a reversing ratchet wrench, so that the screw provided on the rotating body drives the movable plate relative to the base. The seat generates an opening and closing action, thereby adjusting the distance between the base and the movable plate, and then pressing the piston back into the piston hole, which has the advantages of simple structure and convenient operation.

In order to achieve the above object, an embodiment of the present invention provides a vehicle piston presser for pressing at least one piston into a piston hole of a caliper, and the vehicle piston presser includes a base, a rotating body, A movable plate and a reversing ratchet wrench. The rotating body is rotatably disposed on the base, the rotating body includes an inner tube and an outer tube coupled to each other; the movable plate has an outer surface and an inner surface oppositely disposed, the outer surface is for abutting against the at least one piston, the inner surface The utility model has a stud, the stud is screwed to the inner cylinder along the axial direction of the rotating body, and a reversing ratchet wrench is connected to the rotating body for rotationally driving the rotating body to generate the movable plate relative to the base The opening and closing action, so that at least one piston is pressed back to the piston hole when the movable plate is unfolded relative to the base.

Thereby, the invention utilizes the screwing relationship between the rotating body and the stud to adjust the relative distance between the movable plate and the base, so that the operation is quite convenient and fast, and has the effect of simple overall structure.

The exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings, and are not intended to limit the technical principles of the invention to the specific disclosed embodiments, and the scope of the invention is limited only by the scope of the claims Equivalent.

Referring to FIGS. 1 to 6 , the vehicle piston presser 100 of the present invention includes a base 10 , a rotating body 20 , a movable plate 30 , a reversing ratchet wrench 40 , and a resilient device 50 . When the vehicle is replaced, the rotation of the reversing ratchet wrench 40 is performed to cause the base 10 to move relative to the movable plate 30, and when deployed, the at least one piston is pressed back to one of the calipers. Inside the piston bore, or used to press the two opposing pistons back into the piston bore. among them:

The pedestal 10 has an outer side 11 on one side, and a support frame 12 is fixed on the back side of the outer side surface 11. The support frame 12 has a U-shaped cross section, and the support frame 12 has a positioning groove 13 The rotating body 20 is rotatably disposed therein.

As shown in FIG. 2 to FIG. 4, the rotating body 20 includes an inner cylinder 21 and an outer cylinder 22 which are coupled to each other. The length of the inner cylinder 21 is larger than that of the outer cylinder 22, and the inner cylinder 21 has a screw hole 211 in the axial direction. The inner cylinder 21 further has an outer screw portion 212 in the axial direction and on the outer circumference, and the outer screw portion 212 is used for screwing with the outer cylinder 22. In addition, the outer cylinder 22 has a snap ring groove 23 for the first C-shaped buckle 24 to be embedded for limiting the rotating body 20. Furthermore, the end of the inner cylinder 21 has a concave ring groove 213 for a second C-shaped buckle 25 to prevent the inner cylinder 21 from retracting into the outer cylinder 22, and the inner cylinder 21 and the outer cylinder 22 can be prevented. Kill each other.

The movable plate 30 has an outer surface 31 and an inner surface 32. The inner surface 32 has a vertically disposed stud 33. The stud 33 is screwed to the screw hole of the inner cylinder 21 along the axial direction of the rotating body 20. 211, so that the two are screwed together. Wherein, the outer side 11 of the aforementioned base 10 faces away from and is parallel to the inner surface 32 of the movable panel 30.

The reversing ratchet wrench 40 is connected to the rotating body 20 to rotationally drive the rotating body 20 to cause the movable plate 30 to open and close with respect to the base 10. In the embodiment of the present invention, the reversing ratchet wrench 40 includes two spaced apart rod bodies 41. The two rod bodies 41 are pivotally mounted on the rotating body 20. The reversing ratchet wrench 40 has a ratchet wheel 42 disposed between the two rod bodies 41. The ratchet 42 has an outer circumference and an inner hole, and the outer circumference ring is provided with a plurality of ratchet teeth 421, and the inner hole is fixed to the outer surface of the outer cylinder 22 of the rotor 20.

In addition, the reversing ratchet wrench 40 has a reversing pawl 43 pivoted between the two rods 41 for engaging the ratchet teeth 421 of the ratchet wheel 42. The two ends of the reversing pawl 43 are selectively exposed to the two. The lever body 41 is for the user to perform a dialing operation for selectively engaging the ratchet wheel 42 to cause the reversing ratchet wrench 40 to drive the rotating body 20 forward or reverse. An operating handle 44 is fixed between the two rods 41, and is opposite to the direction in which the ratchet 42 is disposed, and a handle 45 is provided at the end of the operating handle 44 to facilitate the user's gripping operation.

The elastic device 50 is a compression spring disposed between the base 10 and the movable plate 30, and the elastic direction of the elastic device 50 is the same as the direction of the rotation of the rotating body 20. The elastic device 50 has a first end 51 and a second end 52. The outer diameter of the first end 51 is greater than the outer end of the second end 52, and the first end 51 abuts against the inner surface 32 of the movable panel 30, and the second The second end 52 of the elastic device 50 is clamped to the first C-shaped buckle 24 in the snap ring groove 23, wherein the second C-shaped buckle 24 is connected to the rotating body 20 in the embodiment of the present invention. The outer diameter is smaller than the outer diameter of the first C-shaped buckle 24 and smaller than the outer diameter of the second end 52 of the elastic device 50.

As shown in FIG. 5 and FIG. 6 , when the piston is pressed back, the ratchet wrench 40 is rotated by the user, so that the ratchet 42 of the reversing ratchet wrench 40 drives the rotating body 20 to rotate synchronously, and because of the rotating body. The screwing relationship between the inner cylinder 21 and the outer cylinder 22 is such that the inner cylinder 21 is displaced a distance toward the left side of the drawing, and then the stud 33 of the movable panel 30 is axially displaced relative to the inner cylinder 21, so that the movable panel 30 is opposite. The susceptor 10 is deployed toward the left side of the drawing, and can perform the work of pressing the piston back into the piston hole. At the same time, during storage, only the reverse rotation switch to the ratchet wrench 40 is required to displace the movable plate 30 toward the susceptor 10, In this way, the present invention can be used by the user to operate the forward or reverse operation of the reversing ratchet wrench 40, so that the movable plate 30 can be opened and closed with respect to the base 10 to be suitable for the piston pressing operation.

Thereby, the present invention can be applied to the replacement of a single-piston caliper, or the replacement of a double-piston caliper. In the operation of the single-piston caliper, the outer surface 31 of the movable plate 30 abuts against the piston, and then the switch is turned to the ratchet wrench 40, so that when the movable plate 30 is unfolded relative to the base 10, the movable plate 30 and the base 10 are expanded. The distance allows the movable plate 30 to press the piston back into the piston hole for subsequent replacement of the piece; in the operation of the double-piston caliper, the outer surface 31 of the movable plate 30 abuts against one of the pistons, and the base The outer side surface 11 abuts against the other opposite piston. By operating the reversing ratchet wrench 40, the movable plate 30 is unfolded relative to the base 10, and the distance between the two is expanded to press the two opposite pistons back into the piston hole. In order to follow the order to replace the film.

By the foregoing, the present invention utilizes the screwing relationship between the rotating body 20 and the stud 33 to adjust the relative distance between the movable plate 30 and the base 10, so that the present invention is quite convenient and fast in operation, and the overall structure is simple, and there is no habit. Knowing that oil presses the piston and causes damage.

While the invention has been described in terms of a preferred embodiment, the various embodiments may The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. All modifications or changes made without departing from the spirit of the invention are within the scope of the invention.

100‧‧‧Vehicle piston pressure reducer

11‧‧‧Outside

13‧‧‧ positioning slot

21‧‧‧Inner tube

212‧‧‧outer screw

22‧‧‧Outer tube

24‧‧‧First C buckle

30‧‧‧ activity board

32‧‧‧ inner surface

40‧‧‧Reversing ratchet wrench

42‧‧‧ratchet

43‧‧‧Reversing pawl

45‧‧‧ grip

51‧‧‧ first end

10‧‧‧ Pedestal

12‧‧‧Support frame

20‧‧‧Rotating body

211‧‧‧ screw holes

213‧‧‧ concave ring groove

23‧‧‧Knock ring groove

25‧‧‧Second C buckle

31‧‧‧ outer surface

33‧‧‧ Stud

41‧‧‧ rod body

421‧‧‧ ratchet

44‧‧‧Operation handle

50‧‧‧Flexible device

52‧‧‧ second end

[Fig. 1] is a schematic view showing the appearance of a piston presser of a vehicle of the present invention. 2 is a schematic view showing the structural decomposition of a part of a piston presser of a vehicle according to the present invention. 3 is a side view (1) of the piston respirator of the vehicle of the present invention, showing that the movable plate and the base are not yet unfolded. Fig. 4 is a cross-sectional view taken along line 4-4 of Fig. 3 of the present invention. [Fig. 5] is a side view (2) of the piston presser of the vehicle of the present invention, showing that the movable plate is unfolded relative to the base. Fig. 6 is a cross-sectional view taken along line 6-6 of Fig. 5 of the present invention.

Claims (10)

A vehicle piston presser for pressing at least one piston into a piston hole of a caliper, the vehicle piston presser comprising: a base; a rotating body, the rotating body is disposed on the base, the rotation The body includes an inner cylinder and an outer cylinder coupled to each other; a movable panel having an outer surface and an opposite inner surface for abutting against the at least one piston, the inner surface having a stud The stud is screwed to the inner cylinder along the axial direction of the rotating body, and a reversing ratchet wrench is connected to the rotating body to rotationally drive the rotating body so that the movable plate is opposite to the rotating plate The base generates an opening and closing action for pressing the at least one piston back to the piston hole when the movable plate is unfolded relative to the base. The vehicle piston pressor according to claim 1, wherein the inner cylinder has a screw hole for screwing the stud, and the inner cylinder has an outer screw portion screwed to the outer cylinder. The vehicle piston pressor of claim 1 or 2, wherein the stud is perpendicular to the inner surface, the base has an outer side surface facing away from and parallel to an inner surface of the movable panel, To abut against another piston. The vehicle piston pressor according to claim 1, wherein an elastic device is disposed between the base and the movable plate, and an elastic direction of the elastic device is the same as an axial direction of the rotating body. The vehicle piston presser of claim 4, wherein the elastic device is a compression spring having a first end and a second end, the first end abutting the inner surface of the movable plate, and One end is connected to the rotating body. The vehicle piston presser of claim 5, wherein the base further comprises a support frame having a positioning groove for the rotating body, the outer tube of the rotating body having a snap ring groove, A first C-shaped buckle is mounted together with the second end of the elastic device. The vehicle piston pressor of claim 5, wherein the outer diameter of the first end of the elastic means is greater than the outer diameter of the second end. The vehicle piston presser of claim 6, wherein the end of the inner cylinder has a concave ring groove for a second C-shaped buckle, and the outer diameter of the second C-shaped buckle is smaller than the The outer diameter of the first C-shaped buckle is smaller than the outer diameter of the second end of the elastic device. The vehicle piston presser of claim 1, wherein the reversing ratchet wrench comprises two spaced apart rod bodies, the two rod bodies being pivotally disposed on the rotating body, the reversing ratchet wrench having a ratchet wheel disposed thereon Between the two rods, the ratchet has an outer circumference and an inner hole, and the outer circumference ring is provided with a plurality of ratchets, and the inner hole is fixed to the outer surface of the outer tube of the rotating body. The vehicle piston presser of claim 9, wherein the reversing ratchet wrench has a reversing pawl pivoted between the two rods for engaging the ratchet; the two rods are fixed between There is an operating handle extending opposite to the ratchet setting direction; a handle is provided at the end of the handle.