Power cylinder with built-in solenoid valve

Abstract

To provide a power cylinder with a built-in solenoid valve.SOLUTION: A power cylinder with a built-in solenoid valve includes a cylinder body 10, a piston assembly 20, a cylinder top cover 30, a cylinder bottom cover 40, and a solenoid valve 50. At the cylinder top cover, an inlet 31, two discharge ports 32, a movable bore 33, and a second passage 34 are installed. The inlet and the two discharge ports communicate with the movable bore and the inlet allows fluid to flow into the chamber 13. A third passage 41 is installed at the cylinder bottom cover, and the third passage communicates with the first passage and the chamber. The solenoid valve is installed at the cylinder top cover. A valve stem 52 of the solenoid valve is movably installed in the movable bore, reciprocating between a first position and a second position. When the valve stem is in the first position, the fluid pushes the piston assembly toward the cylinder top cover. When the valve stem is in the second position, the fluid pushes the piston assembly away from the cylinder top cover.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a power cylinder structure, and more particularly to a power cylinder with a built-in solenoid valve, and more particularly to a power cylinder with a built-in solenoid valve that can effectively maintain the overall volume during use. [Background technology]

[0002] A conventional fluid power cylinder includes a cylinder, a piston movably received within the cylinder, and a piston rod connected to the piston. In actual use, a conventional hydraulic power cylinder utilizes the operation of an electromagnetic valve to switch between supplying and discharging pressurized fluid to and from a cylinder chamber of the cylinder. Thus, the pressurized fluid controls the reciprocating movement of the piston and piston rod.

[0003] However, since the base of the solenoid valve needs to be attached to the surface (side) of the cylinder, and since the solenoid valve and other components are attached to the surface of the cylinder, the volume of the fluid pressure cylinder when actually in use is significantly larger than the volume when not in use. Therefore, it is difficult for a user to know the mounting space required for the fluid pressure cylinder and the positional relationship with other devices when actually using the fluid pressure cylinder, which causes trouble when actually using the cylinder.

[0004] Furthermore, since the solenoid valve and the hydraulic power cylinder are two independent components, it requires a certain time to use, or the solenoid valve needs to be separately installed on the hydraulic cylinder, which causes inconvenience during use. Summary of the Invention [Problem to be solved by the invention]

[0005] The above-mentioned prior art has the disadvantage that it is difficult for a user to know the installation space required for the hydraulic cylinder and the positional relationship with other devices when actually using the hydraulic cylinder, which causes trouble when actually using the hydraulic cylinder. Furthermore, since the solenoid valve and the hydraulic power cylinder are two independent components, if a certain amount of time is not spent in use, the solenoid valve needs to be separately installed on the hydraulic cylinder, which causes inconvenience when using the hydraulic cylinder. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a power cylinder with a built-in solenoid valve, which effectively maintains the overall volume during use by combining the solenoid valve with the cylinder top cover, thereby allowing the user to effectively arrange the installation space and increasing convenience during use.

[0007] The power cylinder with an integrated electromagnetic valve according to the present invention comprises a cylinder body, a piston assembly, a cylinder top cover, a cylinder bottom cover, and an electromagnetic valve. The cylinder body has oppositely disposed first and second ends, a chamber defined therein, and a piston assembly is movably disposed in the chamber of the cylinder body. The cylinder top cover is installed at a first end of the cylinder body, and has an inlet, two exhaust ports, a movable port, a first passage and a second passage on the cylinder top cover. The inlet and the two exhaust ports are respectively connected to the movable port, and the inlet allows fluid to flow into the chamber. A plurality of action grooves are arranged annularly at intervals on the inner diameter periphery of the movable port, and each action groove corresponds to and communicates with the inlet, the two exhaust ports, the first passage and the second passage. The cylinder bottom cover is disposed at the second end of the cylinder body, and a third passage is disposed in the cylinder bottom cover, the third passage communicating between the first passage and the chamber. The solenoid valve is installed on the cylinder top cover, and the solenoid valve has an electronic control unit and a valve rod. The valve rod is movably installed on the movable port. The electronic control unit controls the valve rod to reciprocate between a first position and a second position. When the electronic control unit controls the valve rod in the first position, the inlet communicates with the two inner working grooves, the first passage, the third passage and the chamber, and the fluid pushes the piston assembly toward the cylinder top cover. The electronic control unit controls the valve rod to move to a second position, where the inlet communicates with the other two working grooves, the second passage and the chamber, and one of the outlets communicates with the other working groove, the first passage, the third passage and the chamber, so that the fluid pushes the piston assembly away from the cylinder top cover, and the fluid originally in the chamber is discharged from the outlet through the third passage and the first passage.

[0008] As described above, by combining the electromagnetic valve of the present invention with the cylinder top cover, in actual use, there is no need to install the electromagnetic valve separately, the volume of the power cylinder does not increase, and the user can effectively arrange the installation space, thereby improving convenience during use.

[0009] Furthermore, the structure of the power cylinder according to the present invention is simple, and there is no need to take the time to install an electromagnetic valve during actual use, thus reducing the inconvenience during use and increasing convenience during use. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a schematic three-dimensional external view of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along the line 2-2 in FIG. 1 of the present invention. [Diagram 3] FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention taken along line 3-3 of FIG. 1, showing the valve rod in a first position. [Figure 4] FIG. 4 is a schematic cross-sectional view of an embodiment of the present invention taken along line 4-4 of FIG. 1, showing the valve rod in a first position. [Diagram 5] FIG. 5 is a schematic cross-sectional view of an embodiment of the present invention taken along line 5-5 of FIG. 1, showing the valve rod in a first position. [Figure 6] FIG. 1 is a schematic diagram (1) of an embodiment of the present invention, showing the valve stem in a second position. [Figure 7] FIG. 2 is a schematic diagram (II) of an embodiment of the present invention, showing the valve rod in a second position; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] In order to clearly explain the central idea of ​​the above-mentioned invention, the present invention will be described below with reference to specific embodiments, in which various objects are depicted according to the ratio, size, deformation amount or movement amount of the description, and are not depicted according to the ratio of actual parts. The directional terms used in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely directions shown in the drawings, and the directional terms used are intended to explain and understand the present invention, and are not intended to limit the present invention.

[0012] As shown in FIGS. 1 to 7, the power cylinder with an incorporated electromagnetic valve according to the present invention includes a cylinder body 10, a piston assembly 20, a cylinder top cover 30, a cylinder bottom cover 40, and an electromagnetic valve 50. The cylinder body 10 has a first end 11 and a second end 12 disposed opposite each other, and defines a chamber 13 therein. The housing installation section 14 is provided in a protruding manner on one outer surface of the cylinder body 10, and a flow passage 141 is provided so as to pass through the housing installation section 14 (see Figs. 1 and 3).

[0013] The piston assembly 20 is movably mounted in the chamber 13 of the cylinder body 10 , and includes a piston 21 and a rod body 22 . The rod body 22 has a first connecting end 221 and a second connecting end 222 arranged opposite to each other, and the piston 21 is adjacent to the first end 11 of the cylinder body 10 . One side of the piston 21 is connected to a first connecting end 221 of the rod body 22 , and a second connecting end 222 of the rod body 22 extends to the second end 12 of the cylinder body 10 .

[0014] The cylinder top cover 30 is installed on the first end 11 of the cylinder body 10, and the cylinder top cover 30 is provided with an inlet 31, two exhaust ports 32, a movable port 33, a first passage 34 and a second passage 35. The inlet 31 and the two outlets 32 each communicate with a movable port 33 , and the inlet 31 allows the fluid F to flow into the chamber 13 . In an embodiment of the present invention, the fluid F is a gas. The inlet 31 and the two exhaust ports 32 are provided at a distance from each other on the apex of the cylinder top cover 30 so as to protrude therefrom, and the inlet 31 is provided between the two exhaust ports 32 . The movable port 33 , the first passage 34 and the second passage 35 are disposed between the top and bottom of the cylinder top cover 30 . The flow passage 141 communicates with the first passage 34 , which does not communicate directly with the chamber 13 . A through hole 351 is provided in the second passage 35 so as to extend therethrough, and the through hole 351 communicates with the chamber 13 (see FIGS. 2, 5 and 7).

[0015] A plurality of action grooves are provided annularly at intervals on the inner periphery of the movable port 33. Each action groove corresponds to and communicates with an inlet 31, two exhaust ports 32, a first passage 34, and a second passage 35, respectively. The inlet 31 and the two exhaust ports 32 are arranged in the axial direction of the cylinder body 10 , and the arrangement direction of the inlet 31 and the two exhaust ports 32 is the same as the operating direction of the rod body 22 . The action grooves are an inlet groove 331, a first exhaust groove 332, a second exhaust groove 333, a first through groove 334, and a second through groove 335, respectively. The inlet groove 331 communicates with the inlet 31 , the first exhaust groove 332 and the second exhaust groove 333 communicate with the two exhaust ports 32 , respectively, the first communication groove 334 communicates with the first passage 34 , and the second communication groove 335 communicates with the second passage 35 . The inlet groove 331 is disposed between the first through groove 334 and the second through groove 335, the first through groove 334 is disposed between the inlet groove 331 and the first exhaust groove 332, and the second through groove 335 is disposed between the inlet groove 331 and the second exhaust groove 333 (see FIG. 3).

[0016] Furthermore, one end of each of the two exhaust ports 32 communicates with a silencer 36, and the two silencers 36 provide a sound-absorbing effect when the fluid F is discharged (see FIG. 1).

[0017] The cylinder bottom cover 40 is disposed on the second end 12 of the cylinder body 10, and a third passage 41 is disposed in the cylinder bottom cover 40. The flow passage 141 communicates with the first passage 34 and the third passage 41 , and the third passage 41 communicates between the flow passage 141 and the chamber 13 . A cylinder hole 42 is provided through the cylinder bottom cover 40, the cylinder hole 42 communicates with the chamber 13, and the second connecting end 222 of the rod body 22 extends from the cylinder hole 42 of the cylinder bottom cover 40 (see Figures 5 and 7).

[0018] The electromagnetic valve 50 is installed on the cylinder top cover 30 , and includes an electronic control unit 51 and a valve rod 52 . The electronic control unit 51 is connected to the outer periphery of the cylinder top cover 30 , and the valve rod 52 is movably installed in the movable port 33 . An electronic control unit 51 controls a valve stem 52 to reciprocate between a first position and a second position. In the embodiment of the present invention, the solenoid valve 50 is an air guide solenoid valve.

[0019] A plurality of recesses 521 and a plurality of passage grooves 522 are arranged in an annular shape at intervals on the outer periphery of the valve rod 52 . On both sides of each of the passage tanks 522, recessed tanks 521 are provided at intervals, and a seal ring 523 is fitted in each of the recessed tanks 521. In this embodiment of the present invention, there are five recessed grooves 521 and three common grooves 522, which are spaced apart from one another at the middle position of the valve rod 52, and the depth of each common groove 522 is deeper than the depth of each recessed groove 521 (see Figures 3 and 6).

[0020] As shown in Figures 3 to 5, the electronic control unit 51 controls the valve rod 52. When the valve rod 52 is in the first position, the inlet 31 communicates with one of the communicating tanks 522, the inlet groove 331, the first communicating groove 334, the first passage 34, the third passage 41 and the chamber 13, and the fluid F enters the inlet groove 331 in the movable port 33 through the inlet 31. Since one side of the inlet groove 331 is blocked by a seal ring 523 fitted onto the valve rod 52 , the fluid F does not flow into the second exhaust groove 333 but flows from the first communication groove 334 to the first passage 34 . The fluid F passes through the first passage 34 to the third passage 41 and flows into the chamber 13 , and the fluid F pushes the piston assembly 20 toward the cylinder top cover 30 .

[0021] As shown in Figures 6 and 7, when the electronic control unit 51 controls the valve rod 52 to move it to the second position, the inlet 31 communicates with the two inner tanks 522, the inlet groove 331, the second groove 335, the second passage 35, and the chamber 13, and the fluid F enters the inlet groove 331 in the movable port 33 through the inlet 31. The other side of the inlet groove 331 is blocked by the seal ring 523 fitted to the valve rod 52, so that the fluid F flows from the second inlet groove 335 to the second passage 35. The fluid F flows into the chamber 13 through the through hole 351 of the second passage 35, and the fluid F pushes the piston assembly 20 away from the cylinder top cover 30. The fluid F originally in the chamber 13 flows through the third passage 41 and the first passage 34 into the first exhaust groove 332, and the fluid F is exhausted from the exhaust port 32.

[0022] In summary, the present invention can achieve the following effects: 1. In the present invention, the solenoid valve 50 is coupled to the cylinder top cover 30. Therefore, in actual use, there is no need to install the solenoid valve 50 separately. The volume of the power cylinder does not increase. This allows the user to effectively arrange the installation space, and increases convenience during use. 2. The power cylinder according to the present invention has a simple structure, and there is no need to take the time to install the electromagnetic valve 50 during actual use, which reduces the hassle of using it and increases the convenience of using it.

[0023] The above is merely an embodiment of the present invention, and does not limit the scope of the present invention. All equivalent modifications and alterations based on the claims of the present invention are included in the scope of protection of the present invention. [Explanation of symbols]

[0024] 10 Cylinder body 11 First end 12 Second end 13. Chamber 14. Storage and installation section 141 Ryudo 20 Piston Assembly 21 Piston 22 Rod 221 First series connection end 222 Second connecting end 30 Cylinder top cover 31 Entrance 32 Outlet 33 Movable mouth 331 Grooving 332 First ditch 333 Second ditch 334 First ditch 335 Second groove 34 First aisle 35 Second aisle 351 Through hole 36 Silencer 40 Cylinder bottom cover 41 Third aisle 42 Cylinder hole 50 Solenoid valve 51 Electronic Control Unit 52 Valve stem 521 Concave tank 522 Tank passing 523 Seal Ring F fluid

Claims

1. A power cylinder with a built-in solenoid valve, The cylinder includes a cylinder body, a piston assembly, a cylinder top cover, a cylinder bottom cover, and an electromagnetic valve. The cylinder body has a first end and a second end disposed opposite to each other, A chamber is provided inside the cylinder body, the piston assembly is movably mounted in a chamber of the cylinder body; The piston assembly includes a piston and a rod. the piston is proximate the first end and is connected to one end of the rod, the opposite end of the rod extending into the second end; The cylinder top cover is disposed on a first end of the cylinder body; The cylinder top cover is provided with an inlet, two outlets, a movable port, a first passage, and a second passage; The inlet and the two outlets are disposed in the axial direction of the cylinder body; The installation direction of the inlet and the two outlets is the same as the operating direction of the rod body; the inlet and the two outlets are each connected to the movable port; the inlet allows fluid to enter the chamber; A plurality of action grooves are provided annularly at intervals on the inner diameter periphery of the movable port, The action grooves correspond to and communicate with the inlet, the two exhaust ports, the first passage, and the second passage, respectively; The second passage and the chamber are in communication with each other, The cylinder bottom cover is disposed on the second end of the cylinder body; A third passage is provided in the cylinder bottom cover, the third passage communicates the first passage with the chamber; The electromagnetic valve is installed on the cylinder top cover, The solenoid valve includes an electronic control unit and a valve stem. The valve rod is movably mounted on the cylinder top cover, the electronic control unit controls the valve stem to reciprocate between a first position and a second position; said electronic control unit controls said valve rod, and when said valve rod is in a first position, said inlet communicates with said two working grooves, said first passage, said third passage and said chamber, and said fluid pushes said piston of said piston assembly to move said rod body toward said cylinder top cover; When the electronic control unit controls the valve rod to move to the second position, the inlet communicates with the other two working grooves, the second passage, and the chamber, and one exhaust port communicates with the other working groove, the first passage, the third passage, and the chamber, and the fluid pushes the piston of the piston assembly to move the rod away from the cylinder top cover, and the fluid originally in the chamber passes through the third passage and the first passage and is discharged from the exhaust port. Power cylinder with built-in solenoid valve.

2. The action grooves are respectively an inlet groove, a first exhaust groove, a second exhaust groove, a first through groove, and a second through groove; the inlet groove communicates with the inlet, the first exhaust groove and the second exhaust groove communicate with the two exhaust ports, respectively, the first communication groove communicates with the first passage, and the second communication groove communicates with the second passage.

2. The power cylinder with a built-in electromagnetic valve according to claim 1.

3. The inlet groove is provided between the first through groove and the second through groove, the first through groove is provided between the inlet groove and the first exhaust groove, and the second through groove is provided between the inlet groove and the second exhaust groove.

3. The power cylinder with a built-in electromagnetic valve according to claim 2.

4. The electronic control unit controls the valve rod to communicate with the inlet, the inlet groove, the first passage, the third passage and the chamber when the valve rod is in a first position.

4. The power cylinder with a built-in electromagnetic valve according to claim 3.

5. The electronic control unit controls the valve rod to communicate with the inlet, the inlet groove, the second inlet groove, the second passage and the chamber when the valve rod is in the second position, and communicate with an outlet, the first outlet groove, the first passage, the third passage and the chamber.

5. The power cylinder with a built-in electromagnetic valve according to claim 4.

6. A housing installation part is protrudingly installed on one side outer surface of the cylinder body, and a flow passage is installed in the housing installation part so as to penetrate the housing installation part, and the flow passage is connected to the first passage and the third passage.

2. The power cylinder with a built-in electromagnetic valve according to claim 1.

7. A plurality of recesses are provided at intervals on the outer periphery of the valve rod in an annular shape; A seal ring is fitted in each of the recesses.

2. The power cylinder with a built-in electromagnetic valve according to claim 1.

8. A plurality of through-holes are arranged in an annular manner at intervals on the outer periphery of the valve rod, and the recessed holes are arranged at intervals on both sides of each through-hole.

8. The power cylinder with a built-in electromagnetic valve according to claim 7.

9. One end of each of the two exhaust ports is connected to a silencer.

2. The power cylinder with a built-in electromagnetic valve according to claim 1.

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