An automatic hydraulic cylinder

Abstract

The present invention discloses an automatic hydraulic cylinder, which comprises: a main body, an inner cavity is provided, a water inlet and an upper push rod are provided above the inner cavity, and a through hole is provided below the inner cavity; a piston, a sliding seal is provided in the inner cavity, the piston moves between a starting position and an end position, and a pressure relief hole is provided; a sealing member is movably provided in the piston, and the sealing member moves between an open position and a closed position; a lower push rod is provided below the inner cavity and directly faces the sealing member; an actuating rod is fixedly provided on the piston and extends downward through the through hole; a reset member provides a reset force for the piston; in the starting state, the push rod pushes the sealing member to close the pressure relief hole, and in the end position, the lower push rod pushes the sealing member to open the pressure relief hole. The present invention can realize the automatic reciprocating motion of the piston, so that its characteristics can be used to trigger the automatic drainage function of the toilet drain valve, and the structure is simple, the number of parts is small, and the cost is low.

Description

Technical Field

[0001] The invention relates to a hydraulic cylinder, in particular to an automatic hydraulic cylinder. Background Art

[0002] The existing piston hydraulic cylinder generally fixes the outer shell of the hydraulic cylinder on the base object, and the piston of the hydraulic cylinder moves and drives the working mechanism to move by inputting or discharging the medium oil. In the existing technology, the reciprocating motion of the hydraulic cylinder piston is generally achieved by using a reversing valve to control the input and output of the hydraulic cylinder. It has many parts, complex structure and high cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is aimed at the above-mentioned deficiencies of the prior art. An automatic hydraulic cylinder is provided, which has a simple structure, few parts and low cost.

[0004] To achieve the above object, the technical solution adopted by the present invention is: an automatic hydraulic cylinder, characterized in that it includes:

[0005] The main body is provided with an inner cavity, a water inlet and an upper push rod are provided on the upper part of the inner cavity, and a through hole is provided on the lower part;

[0006] A piston, a sliding seal is arranged in the inner cavity, moves between a starting position and an end position, and an active cavity is arranged, the active cavity is aligned with the push rod, a side hole is arranged on the side of the active cavity, and a pressure relief hole is arranged at the bottom;

[0007] A sealing ring, fixedly disposed on the piston and sealingly matched with the inner wall of the inner cavity;

[0008] A sealing member, movably disposed in the movable cavity, and movable between an open position and a closed position;

[0009] A lower push rod, arranged below the inner cavity and facing the sealing member;

[0010] an actuating rod, fixedly disposed on the piston and extending downward through the through hole;

[0011] A reset member, pre-tightened and arranged on the piston, with the pre-tightening direction being the direction in which the piston returns to the starting position;

[0012] In the initial state, the push rod pushes the sealing member to close the pressure relief hole, and in the end position, the lower push rod pushes the sealing member to open the pressure relief hole.

[0013] Optionally, the height of the push rod is adjustable, thereby adjusting the end position of the piston.

[0014] Optionally, the lower push rod is a screw rod, which is fixedly engaged with the body through threads.

[0015] Optionally, the length of the actuator rod extending downward is adjustable, thereby adjusting the positions of the start and end points of the lower end of the actuator rod.

[0016] Optionally, the actuating rod is a screw rod, which is fixedly engaged with the piston via a thread.

[0017] Optionally, the reset member is a spring, the upper end surface of the spring is pre-tightened with the piston, and the lower end is matched with the bottom surface of the inner cavity.

[0018] Optionally, the main body includes an upper shell and a lower shell, the upper shell and the lower shell constitute the inner cavity, the water inlet and the upper push rod are arranged on the upper shell, and the lower push rod is arranged on the lower shell.

[0019] Optionally, the movable chamber is cylindrical, the diameter of the pressure relief hole is smaller than the diameter of the movable chamber, and the sealing member is cylindrical, and its side wall is slidably matched with the inner wall of the movable chamber.

[0020] Optionally, a rubber pad is provided at the end of the actuating rod.

[0021] Optionally, the sealing ring is a V-ring.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention realizes the automatic reciprocating motion of the piston by passing water into the body, without adding other control components, and has a simple structure;

[0024] 2. The present invention can realize the stroke of the piston by adjusting the lower push rod, has a simple structure, and improves its adaptability to various working conditions;

[0025] 3. The actuating rod of the present invention can be adjusted freely, which improves its adaptability to various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 A three-dimensional diagram of an automatic hydraulic cylinder according to a preferred embodiment of the present invention;

[0028] Figure 2 A three-dimensional exploded view of an automatic hydraulic cylinder according to a preferred embodiment of the present invention;

[0029] Figure 3 A state diagram of the initial position of an automatic hydraulic cylinder according to a preferred embodiment of the present invention;

[0030] Figure 4 The figure is a state diagram of the terminal position of an automatic hydraulic cylinder according to a preferred embodiment of the present invention.

[0031] In the figure:

[0032] 10-body; 11-upper shell; 111-water inlet; 112-upper push rod; 12-lower shell; 121-fixing hole; 122-through hole

[0033] 20-piston; 21-support ring; 22-sealing groove; 23-active chamber; 231-side hole; 232-pressure relief hole; 24-installation hole

[0034] 30-Push rod

[0035] 40-actuating rod; 41-end

[0036] 50-Spring

[0037] 60-Seal ring

[0038] 70-Seal. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. The embodiments in the basic present invention, all other embodiments obtained by ordinary technicians in this field without creative work, belong to the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The following is a specific description with reference to embodiments.

[0045] like Figures 1 to 4 As shown, an automatic hydraulic cylinder of the present invention is characterized by comprising:

[0046] The body 10 is provided with an inner cavity, a water inlet 111 and an upper push rod 112 are provided on the upper part of the inner cavity, and a through hole 122 is provided on the lower part;

[0047] The piston 20 is provided with a sliding seal in the inner cavity and moves between a starting position and an end position. The piston is a cylindrical rotating body with an opening upward. A sealing groove 22 and a support ring 21 are provided on the outer ring surface of the upper end from top to bottom. An active cavity and a mounting hole 24 are provided on the bottom surface. The active cavity 23 is a tubular structure extending upward. The mounting hole 24 is a countersunk hole convexly provided upward. The active cavity 23 is aligned with the push rod. A side hole 231 is provided on the side of the active cavity 23, and a pressure relief hole 232 is provided on the bottom.

[0048] A sealing ring 60 is fixedly disposed in the sealing groove 22 and seals against the inner wall of the inner cavity;

[0049] A sealing member 70, movably disposed in the movable chamber 23, and movable between an open position and a closed position;

[0050] A lower push rod 30 is disposed below the inner cavity and directly faces the sealing member 70;

[0051] The actuating rod 40 is fixedly disposed on the mounting hole 24 and extends downward through the through hole 122;

[0052] A reset member, pre-tightened and arranged on the piston 20, with the pre-tightening direction being the direction in which the piston 20 returns to the starting position;

[0053] In the initial state, the push rod pushes the sealing member 70 to close the pressure relief hole 232 (such as Figure 3 As shown), water is passed through at this time, and the piston 20 moves downward under the action of water pressure; when the piston 20 moves to the end position, the lower push rod 30 pushes the sealing member 70 to open the pressure relief hole 232 (as shown in FIG. Figure 4 As shown), the piston 20 loses the water pressure and moves upward under the action of the spring 50 until it is reset.

[0054] In this embodiment, the height of the lower push rod 30 is adjustable, so as to adjust the end position of the piston 20 .

[0055] In this embodiment, the lower push rod 30 is a screw rod, which is fixedly matched with the body 10 through threads.

[0056] In this embodiment, the length of the actuating rod 40 extending downward is adjustable, so as to adjust the starting and ending positions of the lower end portion 41 of the actuating rod 40 .

[0057] In this embodiment, the actuating rod 40 is a screw rod, which is fixedly matched with the piston 20 through threads.

[0058] In this embodiment, the reset member is a spring 50, the upper end surface of the spring 50 is pre-tightly matched with the lower bottom surface of the support ring, and the lower end is matched with the bottom surface of the inner cavity.

[0059] In this embodiment, the main body 10 includes an upper shell 11 and a lower shell 12, the upper shell 11 and the lower shell 12 constitute the inner cavity, the water inlet 111 and the upper push rod 112 are arranged on the upper shell 11, the bottom surface of the lower shell 12 is provided with a fixing hole 121, and the lower push rod 30 is arranged on the fixing hole 121 through a threaded structure.

[0060] In this embodiment, the movable chamber 23 is cylindrical, the diameter of the pressure relief hole 232 is smaller than the diameter of the movable chamber 23 , and the sealing member 70 is cylindrical, and its side wall is slidably matched with the inner wall of the movable chamber 23 .

[0061] In this embodiment, a rubber pad is provided at the end 41 of the actuating rod 40 .

[0062] In this embodiment, the sealing ring 60 is a V-shaped ring.

[0063] The present invention can be used in the field of bathrooms. For example, the drain valves in existing toilets are mostly mechanical drain valves. The automatic hydraulic cylinder of the present invention can be set on the trigger button of the mechanical drain valve, and then combined with the solenoid valve to realize the induction control of the drain valve. The control mode is upgraded from manual to automatic, and only the automatic hydraulic cylinder of the present invention needs to be added, which can save development costs and development cycles.

[0064] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. An automatic hydraulic cylinder, characterized in that include: The main body is provided with an inner cavity, a water inlet and an upper push rod are provided on the upper part of the inner cavity, and a through hole is provided on the lower part; A piston, a sliding seal is arranged in the inner cavity, moves between a starting position and an end position, and an active cavity is arranged, the active cavity is aligned with the upper push rod, a side hole is arranged on the side of the active cavity, and a pressure relief hole is arranged at the bottom; A sealing ring, fixedly disposed on the piston and sealingly matched with the inner wall of the inner cavity; A sealing member, movably disposed in the movable cavity, and movable between an open position and a closed position; A lower push rod, arranged below the inner cavity and facing the sealing member; an actuating rod, fixedly disposed on the piston and extending downward through the through hole; A reset member, pre-tightened and arranged on the piston, with the pre-tightening direction being the direction in which the piston returns to the starting position; In the initial state, the upper push rod pushes the sealing member to close the pressure relief hole, and in the end position, the lower push rod pushes the sealing member to open the pressure relief hole.

2. An automatic hydraulic cylinder according to claim 1, characterized in that: The height of the lower push rod is adjustable, thereby adjusting the end position of the piston.

3. An automatic hydraulic cylinder according to claim 2, characterized in that: The lower push rod is a screw rod, which is fixedly matched with the body through threads.

4. An automatic hydraulic cylinder according to any one of claims 1, 2 and 3, characterized in that: The length of the actuator rod extending downward is adjustable, thereby adjusting the positions of the start and end points of the lower end of the actuator rod.

5. An automatic hydraulic cylinder according to any one of claims 1, 2 and 3, characterized in that: The actuating rod is a screw rod, which is fixedly matched with the piston through threads.

6. An automatic hydraulic cylinder according to any one of claims 1, 2 and 3, characterized in that: The reset member is a spring, the upper end surface of the spring is pre-tightly matched with the piston, and the lower end of the spring is matched with the bottom surface of the inner cavity.

7. An automatic hydraulic cylinder according to any one of claims 1, 2 and 3, characterized in that: The main body comprises an upper shell and a lower shell, wherein the upper shell and the lower shell constitute the inner cavity, the water inlet and the upper push rod are arranged on the upper shell, and the lower push rod is arranged on the lower shell.

8. An automatic hydraulic cylinder according to any one of claims 1, 2 and 3, characterized in that: The movable chamber is cylindrical, the diameter of the pressure relief hole is smaller than the diameter of the movable chamber, and the sealing member is cylindrical, and the side wall thereof is slidably matched with the inner wall of the movable chamber.

9. An automatic hydraulic cylinder according to any one of claims 1, 2 and 3, characterized in that: A rubber pad is arranged at the lower end of the actuating rod.

10. An automatic hydraulic cylinder according to any one of claims 1, 2 and 3, characterized in that: The sealing ring is a V-shaped ring.

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