TWM570368U - Fluid pressure cylinder with self-locking mechanism - Google Patents

Abstract

The fluid pressure cylinder having a self-locking mechanism comprises a cylinder body, a piston, a socket, a locking block, a cylinder head, a brake block and a group joint; the piston is accommodated in the chamber of the cylinder; the central hole of the socket has the first The ring block is connected to the chamber; the locking block has a tubular body disposed on the socket after the brake block is disposed, the pipe body is provided with a plurality of perforations, and the plurality of steel balls are disposed on the plurality of perforations; the cylinder cover is disposed at the Locking the block and fixing the cylinder; the brake block has a second ring stop on the outside, and is in contact with the first ring stop, so that a plurality of steel balls protrude into the pipe body; the set of joints are connected to the piston And the access to the center hole of the socket, which has a card slot can be protruded by the plurality of protruding steel balls.

Description

Fluid pressure cylinder with self-locking mechanism

This creation is related to a fluid pressure cylinder, and in particular to a fluid pressure cylinder having a self-locking mechanism.

According to the conventional fluid pressure cylinder, in order to keep the piston in the stop position when the operation is stopped or completed, it is usually through continuous supply of load (gas or liquid) and locking the cylinder, or additionally adding a locking device. To achieve; however, continuous supply of load into the pressure cylinder, it is easy to leak due to wear of the leakage ring, coupled with the piston's own weight, will inevitably affect the positioning of the piston, therefore, the piston remains in the position where the action stops, indeed There is a problem that it is difficult to maintain, and in addition to the length of the cylinder, it is necessary to increase the length of the cylinder, and it is necessary to consider whether there is sufficient space for the locking device to be installed, and the conventional fluid cylinder has a place to be improved.

The main purpose of the present invention is to provide a fluid pressure cylinder having a self-locking mechanism, which can avoid the leakage of fluid caused by the wear of the leakage preventing ring, and does not increase the length of the pressure cylinder, and does not have to worry about whether the space is sufficient for the locking device to be installed. When the problem is reached, it is possible to ensure that the piston is kept in the position where the action is stopped, and the self-locking function is provided.

In order to achieve the above object, a fluid pressure cylinder having a self-locking mechanism provided by the present invention comprises: a cylinder having a chamber, the cylinder forming an opening and a through hole respectively at the upper and lower sides of the chamber; a piston is disposed in the chamber, the piston is connected to a cylinder, the cylinder passes through the through hole and protrudes outside the cavity; a socket is disposed on the cylinder and covers the opening, the connection The seat has a central hole communicating with the central hole, the central hole communicating with a first ring stop, the central hole being divided into a first hole segment and a second hole segment, the socket having a a first flow path and a second flow path, the first flow path communicating with the first hole section of the central hole, the second flow path communicating with the second hole section of the central hole; a locking block disposed at the socket and covering a first hole section of the center hole, the locking block protrudes downwardly from a pipe body, the pipe body has a pipe wall, the pipe body has a plurality of perforations; a cylinder head is fixed to the locking block; and a plurality of steel balls Each of the perforations of the locking block is movably disposed, and each of the steel balls has a diameter larger than that of the tube body a thickness of the wall; a brake block in the socket and displaceable in the first hole section of the central hole, the brake block having a second ring stop on the outer circumference side, and the first portion of the socket The ring block abuts, the center of the brake block has a circular hole, and the brake block is movably sleeved on the pipe body through the circular hole, and the brake block forms a concave portion at the edge of the circular hole, protruding from the pipe body Each of the outer steel balls protrudes into the concave step; a set of joints is connected to the piston, and the set of joints can enter and exit the pipe body, the set of joints has a latching groove for protruding from the pipe wall of the pipe body The steel ball extends into the cassette groove.

A further technical feature of the present invention is that the cylinder head is provided with an inner groove at the center of the bottom surface for receiving and restraining the locking block.

A further technical feature of the present invention is that the set of joints is provided with a beveling portion formed by gradually reducing the outer diameter of the end of the set of joints toward the direction of the latching groove.

A further technical feature of the present invention is that the piston is further provided with a connecting post, and the set of joints is provided with a set of connecting holes, and the connecting post is inserted into the set of connecting holes.

A further technical feature of the present invention is that: the set of joints is provided with a ring groove on the outer peripheral side, and a protective sleeve has a core hole which can be sleeved on the outer side of the set of joints, the core hole wall has a convex ring, and the convex ring can be Embedded in the ring groove of the set of joints.

A further technical feature of the present invention is that the plurality of perforations of the locking block are arranged around the circumference of the tubular body and the circumference of the same circular diameter.

In order to explain in detail the technical features of the present invention, the following preferred embodiments are described with reference to the following:

As shown in FIG. 1 to FIG. 7, a fluid pressure cylinder 100 having a self-locking mechanism includes: a cylinder 10, a piston 20, a socket 30, a locking block 40, a plurality of steel balls 50, and a Brake block 60, a set of joints 70, and a cylinder head 80.

The cylinder block 10 has a chamber 11 which defines an opening 12 and a through hole 13 respectively above and below the chamber 11.

The piston 20 is disposed in the chamber 11. In the embodiment of the present specification, the piston 20 is connected to a column 21 at one end, and a connecting post 22 is protruded from the other end. The column 21 extends through the through hole 13 and extends. Outside the chamber 11, the connecting post 22 is used to connect the set of joints 70.

The socket 30 is disposed in the cylinder block 10 and covers the opening 12. The socket 30 has a central hole 31 extending therethrough. The center hole 31 communicates with the cavity 11. The hole of the center hole 31 protrudes from the first ring gear. The first ring portion 32 divides the central hole 31 into a first hole segment 311 and a second hole segment 312. The socket 30 is provided with a first flow channel 33 and a second flow channel at the outer periphery. 34. The first flow channel 33 communicates with the first hole segment 311 of the central hole 31, and the second flow channel 34 communicates with the second hole segment 312 of the central hole 31 (please refer to FIGS. 2 and 7). The first flow channel 33 and the second flow channel 34 allow a load (liquid or gas) to enter the socket 30 and the chamber 11 in a timely manner, and the relevant actuators are detailed later.

The locking block 40 is disposed on the socket 30 and covers the first hole segment 311 of the central hole 31. The locking block 40 protrudes downward from the center of the bottom surface thereof. The pipe body 41 has a pipe wall. The tube wall is provided with a plurality of perforations 42 which are arranged around the circumference of the tube wall and at the circumference of the same circular diameter.

The plurality of steel balls 50 are movably disposed in each of the through holes 42 of the locking block 40. The diameter of each of the steel balls 50 is larger than the thickness of the tube wall of the tube body 41, so that each of the steel balls 50 can go to the inside of the tube body 41. Or external exposure.

The brake block 60 is disposed in the socket 30 and is displaceable in the first hole segment 311 of the central hole 31. The brake block 60 has a second ring stop portion 61 on the outer peripheral side, and the second ring stop portion 61 The first ring stop portion 32 of the socket 30 can be abutted against the first ring stop portion 32. The brake block 60 has a circular hole 62 in the center thereof. The brake block 60 is movably sleeved on the tubular body 41 of the locking block 40 through the circular hole 62. The brake block 60 defines a concave portion 63 at the edge of the circular hole 62. The steel ball 50 protruding from the outside of the tubular body 41 can extend into the concave portion 63 (as shown in FIGS. 2 and 3). Show).

The set of joints 70 are connected to the piston 20, and the set of joints 70 can enter and exit the tubular body 41. The set of joints 70 has a latching groove 71, and each of the steel balls 50 protruding from the inside of the tubular body 41 can extend into the card. In the embodiment of the present specification, the set of joints 70 is recessed with a plurality of holes 72 at the bottom, and the piston 20 is inserted into the set of holes 72 by the connecting post 22 (refer to FIG. 1). The set of joints 70 can be moved along with the piston 20; the set of joints 70 is provided with a beveling portion 73 which is formed by gradually reducing the outer diameter of the end of the set of joints 70 toward the direction of the latching groove 71. When the set of joints 70 enters the tubular body 41, the plurality of steel balls 50 are pushed outward by the oblique pushing portion 73, and the set of joints 70 can smoothly enter the tubular body 41.

In addition, the set of joints 70 is recessed on the outer peripheral side with a ring groove 74. A protective sleeve 75 has a core hole 76 which can be sleeved on the outer side of the set of joints 70. The hole of the core hole 76 has a convex ring 77, and the convex ring 77 The ring groove 74 of the set of joints 70 can be embedded, and the protective sleeve 75 can prevent the set of joints 70 and the connecting post 22 from being worn during operation, thereby prolonging the service life of the set of joints 70 and the piston 20, and If the protective cover 75 is worn, it can be updated at the right time, and the update action is also simple and easy.

The cylinder head 80 is fixed to the locking block 40. In the embodiment of the present specification, an inner groove 81 is provided on the bottom surface of the cylinder head 80 for receiving and restraining the locking block 40. The top surface of the cover 80 is provided with a plurality of mounting holes 82 (please refer to FIG. 7), and the assembly unit (not shown) can pass through the plurality of mounting holes 82 to assemble the cylinder head 80 and the socket 30. And the cylinder block 10, of course, this embodiment of the present invention, in actual use, does not limit the number of mounting holes 82 and the position of the installation, and which combination of components are matched to achieve the assembly.

It is further noted that in the embodiment of the present specification, the locking block 40 is provided with a first concave ring groove 43 on the outer periphery thereof, and the brake block 60 is provided with a second concave ring groove 64 on the outer periphery thereof. The block 60 is provided with a third concave ring groove 65 in the hole wall of the circular hole 62, and the socket 30 is provided with a fourth concave ring groove 35 on the outer periphery thereof, the first concave ring groove 43, the second concave The annular groove 64, the third concave ring groove 65 and the fourth concave ring groove 35 are respectively provided with a leakage preventing ring 90 to provide leakage prevention and airtightness, and the arrangement of the leakage preventing ring 90 is conventionally known. It is an essential component of a general fluid pressure cylinder, and is not a main feature of the present invention, and does not limit the shape of the leakage preventing ring 90, the concave ring grooves 43, 64, 65, 35, and the portions to be provided.

With the above configuration, in the actual operation, please refer to FIG. 1 , FIG. 2 and FIG. 3 , the fluid cylinder 100 having the self-locking mechanism is stopped when the operation is stopped. Above the cylinder block 10, at this time, the first hole of the center hole 31 of the socket 30 is provided by the fluid provided by the valve body 36 (generally an inflation valve) provided at the first flow path 33 of the socket 30. The segment 311 enters (please refer to FIGS. 2 and 7) and pushes the brake block 60 downward until the second ring portion 61 is resisted by the first ring portion 32 of the socket 30. When the brake block 60 is moved to the positioning, and the plurality of steel balls 50 are pushed by the hole wall of the circular hole 62 to protrude the inside of the pipe wall of the pipe body 41, the plurality of steel balls 50 can be erected. The latching groove 71 of the set of joints 70 (as shown in Fig. 3) provides the function of enhancing the positioning of the piston 20, so that the piston 20 can be surely locked, so that the piston 20 is held in a position where the action is stopped. Even if the leakage preventing ring 90 is worn or the pressure in the chamber 11 leaks, the fluid pressure cylinder 100 having the self-locking mechanism is also Can remain locked.

Referring to FIG. 4, FIG. 5 and FIG. 6, when the unlocking operation is performed, a load (liquid or gas) is supplied from the second flow path 34 of the socket 30 into the socket 30. The brake block 60 is pushed upwardly to move the concave step 63 against the plurality of steel balls 50, and the piston 20 moves the set of joints 70 downward due to the force generated by the weight of the piston 20, and the set of joints 70 pushes Extending the plurality of steel balls 50 outward, the plurality of steel balls 50 protrude outside the tube wall of the tube body 41, and the plurality of steel balls 50 protrude into the concave step portion 63 to release the top of the card groove 71 (such as the fifth As shown, the set of joints 70 can be disengaged from the brake block 60, after which the piston 20 can reciprocate within the chamber 11 (as shown in Figure 6), i.e., unlocking is accomplished.

The steps and principles of reciprocating the piston 20 in the chamber 11 are well known and are not described in detail herein.

The fluid cylinder 100 has a self-locking mechanism. The plurality of steel balls 50 are disposed on the locking block 40. The plurality of steel balls 50 can cooperate with the brake block 60 to provide a resistance to the set of joints 70. Positioning the piston 20, the fluid pressure cylinder 100 having a self-locking mechanism can avoid the disadvantage that the piston 20 cannot be positioned due to leakage of the leakage preventing ring, and the creation has a self-locking mechanism. The fluid pressure cylinder 100 does not need to increase the length of the cylinder, and it is not necessary to worry whether the space is sufficient for the additional locking device. This creation can indeed achieve the self-locking function of keeping the piston 20 in the position where the operation is stopped.

100‧‧‧Liquid pressure cylinder

10‧‧‧Cylinder

11‧‧‧ chamber

12‧‧‧ openings

13‧‧‧through hole

20‧‧‧Piston

21‧‧‧Cylinder

22‧‧‧Connecting column

30‧‧‧ Seating

31‧‧‧ center hole

311‧‧‧ first hole section

312‧‧‧second hole section

32‧‧‧First ring stop

33‧‧‧First runner

34‧‧‧Second runner

35‧‧‧fourth concave ring groove

36‧‧‧ valve body

40‧‧‧Lock block

41‧‧‧ tube body

42‧‧‧Perforation

43‧‧‧First concave ring groove

50‧‧‧ steel balls

60‧‧‧ brake pads

61‧‧‧Second ring block

62‧‧‧ round holes

63‧‧‧ concave section

64‧‧‧Second concave ring groove

65‧‧‧3rd concave ring groove

70‧‧‧ joint

71‧‧‧ card slot

72‧‧‧ groups of holes

73‧‧‧ oblique push

74‧‧‧Circle

75‧‧‧ protective cover

76‧‧‧heart hole

79‧‧‧ convex ring

80‧‧‧Cylinder head

81‧‧‧ Inside groove

82‧‧‧Installation holes

90‧‧‧ leakproof ring

1 is a schematic cross-sectional view showing a self-locking state in a preferred embodiment of the present invention. Fig. 2 is a partially enlarged schematic view showing the socket, the lock block, the brake block and the group joint in Fig. 1. Figure 3 is an enlarged schematic view of the steel ball in the second figure against the click groove. Fig. 4 is a schematic view of the operation when the self-locking state is released. Fig. 5 is an enlarged schematic view showing the steel ball projecting into the concave portion in Fig. 4. Figure 6 is a schematic cross-sectional view of the set of joints off the brake block. Figure 7 is a perspective view of Figure 2.

Claims (9)

A fluid pressure cylinder having a self-locking mechanism, comprising: a cylinder body having a chamber, wherein the cylinder body forms an opening and a through hole respectively in the upper and lower portions of the chamber; a piston is accommodated in the chamber The piston is connected to a cylinder, and the cylinder extends through the through hole and protrudes outside the cavity; a socket is disposed on the cylinder and covers the opening, the socket has a central hole penetrating through the center The hole communicates with the chamber, the central hole wall protrudes into a first ring stop, and the center hole is divided into a first hole segment and a second hole segment, the socket has a first flow channel and a second flow channel. The first flow channel communicates with the first hole segment of the central hole, the second flow channel communicates with the second hole segment of the central hole; a locking block is disposed at the socket and covers the first hole segment of the central hole, The locking block protrudes downwardly from a tube body, the tube body has a tube wall, the tube body has a plurality of perforations; a cylinder head is fixed to the locking block; and a plurality of steel balls are respectively movably disposed on the locking block Each of the perforations, the diameter of each of the steel balls is greater than the thickness of the tube wall of the tube; a brake block at the socket And being displaceable in the first hole section of the central hole, the brake block has a second ring stop on the outer peripheral side, and can be abutted against the first ring stop of the socket, the center of the brake block has a circle a hole through which the brake block is movably sleeved, the brake block forming a concave portion at an edge of the circular hole, and each of the steel balls protruding outside the tubular body can extend into the concave portion And a set of joints connected to the piston, the set of joints can enter and exit the pipe body, the set of joints has a latching groove, and the steel balls protruding from the pipe wall of the pipe body extend into the latching groove. A fluid pressure cylinder having a self-locking mechanism according to claim 1, wherein the cylinder head is provided with an inner groove on the bottom surface for receiving and restraining the locking block. A fluid pressure cylinder having a self-locking mechanism according to claim 1, wherein: the set of joints is provided with a diagonal pushing portion which is gradually reduced from the end of the set of joints to the direction of the latching groove. The outer diameter is formed. A fluid pressure cylinder having a self-locking mechanism according to claim 1, wherein the piston is further provided with a connecting post, and the set of joints is provided with a set of connecting holes, and the connecting post is inserted into the set of connecting holes. A fluid pressure cylinder having a self-locking mechanism according to claim 4, wherein: the set of joints is provided with a ring groove on the outer peripheral side, and a protective sleeve has a core hole which can be sleeved on the outer side of the set of joints, the core hole wall There is a convex ring that can be embedded in the annular groove. A fluid pressure cylinder having a self-locking mechanism according to claim 1, wherein the plurality of perforations of the locking block are arranged around a circumference of the tubular body and a circumference of the same circular diameter. A fluid pressure cylinder having a self-locking mechanism according to claim 1, wherein the locking block is provided with a first concave ring groove on an outer circumference thereof for a leakage preventing ring. A fluid pressure cylinder having a self-locking mechanism according to claim 1, wherein the brake block is provided with a second concave ring groove on the outer periphery thereof, and the brake block is provided with a third concave wall in the hole of the circular hole. The ring groove is provided for a leakproof ring. A fluid pressure cylinder having a self-locking mechanism according to claim 1, wherein the socket is provided with a fourth concave ring groove on the outer periphery thereof for a leakproof ring.