Nitrogen spring

Abstract

The utility model relates to the technical field of springs, and discloses a nitrogen spring which comprises an air cylinder barrel body, a piston rod movably penetrates through one end of the air cylinder barrel body, a guiding piece is installed on one side of the piston rod and used for guiding movement of the piston rod in the air cylinder barrel body, and a first connecting piece is fixedly installed on a wall. The second connecting piece is installed on the door plate, in the door plate closing process, the guide piece is used for guiding when the piston rod moves, bending or eccentric wear of the piston rod due to lateral force (such as load eccentricity) is prevented, the piston rod moves towards the interior of the air cylinder barrel body, air in the air cylinder barrel body is compressed, extra buffering force is provided, and the buffering effect is improved; when the door plate is closed, the elastic reset assembly on the piston rod is pressed and buffered in advance, impact on the guide part is reduced, the service life of the gas spring is prolonged, and the problems that in the prior art, the guide part is easily damaged, and the service life of products is shortened are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to spring technical field especially relates to a nitrogen spring. BACKGROUND

[0002] Traditional door plate support device (such as mechanical spring, hydraulic rod or gravity balance structure) is widely used in industrial equipment, automobile, cabinet and other fields, but there are following technical limitations: for example: big, and occupies more space, and long-term use is easy to cause elastic attenuation due to metal fatigue, and needs to be frequently replaced;Unable to accurately adjust the support force, difficult to match different door plate weight or opening angle requirement;Depend on liquid medium, there is the risk of leakage, pollute the environment and high maintenance cost;The viscosity of liquid changes significantly under low temperature environment, resulting in unstable support force;Depend on counterweight or pulley system, complex structure and installation space is limited;Lack of buffering function, door plate opening and closing is easy to produce impact noise, reduce service life.

[0003] In the prior art, the traditional door plate support only passes through the hydraulic rod assembly, in the process that the door plate is closed, the piston rod is compressed to the inside of the cylinder barrel, the guide piece (such as guide sleeve, wear ring) is used to ensure that the piston rod is aligned with the cylinder axis when reciprocating, to prevent the piston rod from bending or eccentric wear due to lateral force (such as load eccentricity), reduce the wear of sealing element, reduce the friction between piston rod and cylinder body, prolong the service life, but if the door is frequently opened and closed, the guide piece is easy to be damaged, and the product life is reduced. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problems in the prior art and provides a nitrogen spring.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A nitrogen spring, comprising a cylinder barrel body, a piston rod movably penetrating one end of the cylinder barrel body, a guide piece installed on one side of the piston rod for guiding the movement of the piston rod in the cylinder barrel body, a first connecting piece fixedly installed at the other end of the cylinder barrel body, a second connecting piece connected to one end of the piston rod, an elastic reset assembly installed on one side of the second connecting piece, and the other end of the elastic reset assembly fixedly connected with the outer periphery of the piston rod.

[0007] Preferably, the elastic reset assembly is a spring.

[0008] Preferably, one side of the guide piece is provided with a sealing assembly for preventing the gas in the cylinder barrel body from flowing out when the piston cylinder moves.

[0009] Preferably, the sealing assembly comprises a sealing element arranged on the guide piece and a sealing ring arranged on one side of the sealing element.

[0010] Preferably, the piston rod, the guide, the sealing element and the sealing ring are sequentially combined and movably installed in the inner cavity of the cylinder barrel body.

[0011] Preferably, the cylinder barrel body and the piston rod are connected with the first connecting element and the second connecting element respectively through mounting assemblies, and the mounting assemblies are bolts.

[0012] Preferably, the first connecting element and the second connecting element each include a mounting block, and a first connecting rod and a second connecting rod mounted on the outer periphery of the mounting block, wherein one side of the first connecting rod is provided with a threaded hole matched with a screw thread.

[0013] Preferably, the mounting block is spherical, one end of the spring is tangent to the mounting block and concentric with the piston rod.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses a nitrogen gas spring, which comprises a cylinder barrel body, a piston rod movably installed in the cylinder barrel body, a guide movably installed on the piston rod, a sealing element movably installed on the piston rod, a sealing ring movably installed on the sealing element, a first connecting element movably installed on the wall body, a second connecting element movably installed on the door plate, and an elastic reset assembly movably installed on the piston rod. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall schematic view of the nitrogen gas spring.

[0017] In the figure: 1, cylinder barrel body;2, piston rod;3, guide;4, first connecting element;5, second connecting element;6, elastic reset assembly;7, sealing element;8, sealing ring;9, mounting assembly;10, mounting block;11, first connecting rod;12, second connecting rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0019] REFERENCE Figure 1The utility model provides a nitrogen spring, including the cylinder body 1 of gas, the one end of cylinder body 1 is moved and passes through the piston rod 2, the one side of piston rod 2 is equipped with the guide 3 for the movement of piston rod 2 in cylinder body 1 is guided, the other end of cylinder body 1 is fixedly installed with first connecting piece 4, and the one end of piston rod 2 is provided with second connecting piece 5, and second connecting piece 5 is connected with piston rod 2 through elastic reset component 6.

[0020] The utility model discloses in use, through the first connecting piece 4 fixed installation on the wall, through the second connecting piece 5 installation to the door board, in the process that the door board is closed, through the guide 3 is guided when the piston rod 2 moves, prevent the piston rod 2 from bending or eccentric wear due to lateral force (such as load), the piston rod 2 moves to the inside of cylinder body 1, compresses the gas in cylinder body 1, provides additional buffer force, increases the buffering effect, when the door board is closed, the elastic reset component 6 on the piston rod 2 is pressed in advance and pre-buffer, reduces the impact on the guide 3, improves the service life of gas spring, solves the problem that the prior art is easy to damage the guide 3 and reduces the product life.

[0021] Further, the elastic reset component 6 is a spring, by setting the elastic reset component 6 as a spring, by spring pre-pressing and pre-buffering, reducing the impact on the guide 3, improving the service life of the gas spring, after the door plate resets, the spring can be reset.

[0022] Further, the guide 3 is provided with a sealing assembly on one side for preventing gas in the cylinder body 1 from flowing out when the piston moves, the sealing assembly includes a sealing element 7 provided on one side of the guide 3 and a sealing ring 8 provided on the other side of the sealing element 7, the sealing element 7 and the sealing ring 8 can prevent the gas in the cylinder body 1 from flowing out, and the good sealing property can maintain stable pressure in the system and improve energy transmission efficiency.

[0023] Further, the piston rod 2, the guide 3, the sealing element 7 and the sealing ring 8 are sequentially combined and fixed, and movably installed in the inner cavity of the cylinder body 1.

[0024] Further, the cylinder body 1 and the piston rod 2 are connected with the first connecting piece 4 and the second connecting piece 5 respectively through the mounting assembly 9, the mounting assembly 9 is a bolt, the first connecting piece 4 and the second connecting piece 5 each include a mounting block 10, a first connecting rod 11 and a second connecting rod 12 mounted on the outer periphery of the mounting block 10, wherein a threaded hole is formed on one side of the first connecting rod 11, the threaded hole is adapted to the bolt, and the first connecting rod 11 can be mounted on the bottom of the corresponding cylinder body 1 and the top of the piston rod 2 through the bolt.

[0025] Further, the mounting block 10 is spherical, one end of the spring is tangent to the mounting block 10 on the second connecting piece 5 and concentric with the piston rod 2, the mounting block 10 on the second connecting piece 5 is screwed with the corresponding bolt through the spring, by tangency of one end of the spring to the mounting block 10 and concentricity with the piston rod 2, it is ensured that the spring force is always transmitted along the axis direction of the piston rod 2, lateral component force caused by installation error or movement deviation is avoided, eccentric wear of the piston rod 2 and the guide 3 is reduced, and the service life of the guide 3 is prolonged.

[0026] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A nitrogen spring comprising a cylinder barrel body, a piston rod movably penetrating one end of the cylinder barrel body, a guide member being mounted on one side of the piston rod for guiding movement of the piston rod in the cylinder barrel body, characterized in that: One end of the piston rod is connected with a second connecting piece, one side of the second connecting piece is provided with an elastic reset assembly, and the other end of the elastic reset assembly is connected with the outer periphery of the piston rod.

2. A nitrogen gas spring as claimed in claim 1, wherein: The elastic reset assembly is a spring.

3. A nitrogen gas spring as defined in claim 2, wherein: One side of the guide piece is provided with a sealing assembly for preventing gas in the cylinder barrel body from flowing out when the piston cylinder moves.

4. A nitrogen gas spring as defined in claim 3, wherein: The sealing assembly comprises a sealing piece arranged on one side of the guide piece.

5. A nitrogen gas spring as defined in claim 4, wherein: The other side of the sealing piece is provided with a sealing ring.

6. A nitrogen gas spring as defined in claim 5, wherein: The piston rod, the guide piece, the sealing piece and the sealing ring are sequentially combined and movably installed in the inner cavity of the cylinder barrel body.

7. A nitrogen gas spring as defined in claim 6, wherein: The cylinder barrel body and the piston rod are connected with the first connecting piece and the second connecting piece respectively through mounting assemblies, and the mounting assemblies are bolts.

8. A nitrogen gas spring as defined in claim 7, wherein: The first connecting piece and the second connecting piece each comprise a mounting block, a first connecting rod and a second connecting rod mounted on the outer periphery of the mounting block, wherein one side of the first connecting rod is provided with a threaded hole matched with the bolt.

9. A nitrogen gas spring as defined in claim 8, wherein: The mounting block is spherical.

10. A nitrogen gas spring as defined in claim 9, wherein: One end of the spring is tangent to the mounting block and concentric with the piston rod.

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