Gas spring piston mechanism

Abstract

The utility model discloses an air spring piston mechanism, which belongs to the technical field of air springs and comprises a cylinder barrel, a piston rod is slidably connected to the upper side of the cylinder barrel, a piston is fixed at the lower end of the piston rod, an air supply component is arranged on the lower side of one end of the cylinder barrel, and a support component is fixed at the upper end of the cylinder barrel. The supporting assembly is arranged, the piston rod is sleeved with the supporting barrel, after the lower end of the supporting barrel makes contact with the upper end of the cylinder barrel, the fixing bolt in the mounting plate is screwed into the fixing hole to limit and fix the mounting plate and the supporting barrel, and the side edge of the piston rod is tightly attached to the inner walls of the balls and the rubber ring; the rolling grooves are formed in the piston rod, the balls roll in the rolling grooves and can support and limit the piston rod, meanwhile, the rubber ring has a sealing effect on the piston rod, the supporting assembly can support and limit the piston rod, and the situation that when the piston rod and the cylinder barrel are not coaxial, the piston rod abrades the cylinder barrel, and consequently air leakage occurs between the piston rod and the cylinder barrel is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of gas spring technology, and specifically relates to a gas spring piston mechanism. Background Technology

[0002] The specific functions of the gas spring piston mechanism are mainly reflected in its energy storage, support, buffering, adjustment, and motion control functions, combined with different application scenarios.

[0003] The existing technology has the following problems: the existing gas spring piston mechanism cannot guide, support, limit and seal the piston rod. When the piston rod and the cylinder are not coaxial, the piston rod will wear the cylinder, resulting in air leakage due to wear between the piston rod and the cylinder. At the same time, the existing gas spring piston mechanism is not convenient for replenishing air into the cylinder, and the gas in the cylinder is prone to leakage when replenishing air. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a gas spring piston mechanism, which has the characteristics of guiding, supporting, limiting, and sealing the piston rod.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gas spring piston mechanism, including a cylinder, a piston rod slidably connected to the upper side of the cylinder, a piston fixed at the lower end of the piston rod, an air supply component provided at the lower side of one end of the cylinder, and a support component fixed at the upper end of the cylinder;

[0006] The support assembly includes a support cylinder, mounting plate, fixing bolts, fixing holes, rubber rings, slots, balls, and grooves. The support cylinder is located at the upper end of the cylinder corresponding to the piston rod. Mounting plates are fixed to the lower sides of both ends of the support cylinder. The mounting plates are connected to the cylinder by fixing bolts. The upper end of the cylinder has fixing holes corresponding to the fixing bolts. A rubber ring is snapped into the lower side of the inside of the support cylinder. A slot corresponding to the rubber ring is formed in the support cylinder. Several balls are located on the upper side of the inside of the support cylinder. Grooves corresponding to the balls are formed in the support cylinder.

[0007] Preferably, after the support cylinder is installed, the side of the piston rod is tangent to the inner wall of the rubber ring and the side of the ball, and the adjacent balls form a 60-degree angle.

[0008] Preferably, the mounting plate has through holes corresponding to the fixing bolts, the lower end of the mounting plate is flush with the lower end of the support cylinder, and the mounting plate and the support cylinder are a welded integral structure.

[0009] Preferably, the air replenishment assembly includes a round seat, a cover, a transverse cavity, a fixed cylinder, a right-angle cavity, a sliding plate, a spring, a sliding column, and a sealing seat. The round seat is fixed to the lower side of one end of the cylinder, and the cover is threaded to the other end of the round seat. A right-angle cavity is opened on one side of the round seat, and a transverse cavity is opened at one end of the right-angle cavity. A sealing seat is provided on one side of the transverse cavity. A fixed cylinder is fixed at the upper end of the round seat at a position corresponding to the sealing seat. A sliding plate is slidably connected in the fixed cylinder. A spring is provided at the upper end of the sliding plate. The sliding plate and the sealing seat are connected by a sliding column.

[0010] Preferably, the height of the sealing seat is the same as the height of the transverse cavity, the side of the sealing seat is in close contact with the inner wall of the right-angle cavity, and the upper end of the round seat is provided with a sliding hole corresponding to the sliding column.

[0011] Preferably, the fixed cylinder and the round seat, as well as the sealing seat and the sliding column, are spot welded together, and the side of the sliding plate is in close contact with the inner wall of the fixed cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, by setting a support assembly, inserts a rubber ring into the groove of the support cylinder, and then sleeves the support cylinder onto the piston rod. After the lower end of the support cylinder contacts the upper end of the cylinder, the fixing bolts in the mounting plate are screwed into the fixing holes to limit and fix the mounting plate and the support cylinder. The side of the piston rod is in close contact with several balls and the inner wall of the rubber ring. When the piston rod extends or retracts, several balls roll in the groove, which can support and limit the piston rod. At the same time, the rubber ring plays a sealing role for the piston rod. By setting a support assembly, the piston rod can be supported and limited, avoiding the piston rod from wearing the cylinder when the piston rod and the cylinder are not coaxial, which would cause air leakage due to wear between the piston rod and the cylinder.

[0014] 2. This utility model, by setting up an air replenishment component, allows for easy replenishment of air into the cylinder by unscrewing the cover at one end of the round seat, fixing the air replenishment pipe to one end of the round seat, and injecting air. The gas enters the right-angle cavity and compresses the sealing seat to slide upward. The sealing seat pushes the slide plate at the upper end of the sliding column to slide in the fixed cylinder, compressing the spring. The gas enters the cylinder through the transverse cavity. After the air replenishment is completed, the spring extends and pushes the slide plate back to its original position. At the same time, the sealing seat at the lower end of the sliding column seals one end of the transverse cavity. Then, the cover is screwed on. By setting up the air replenishment component, it is easy to replenish air into the cylinder and avoids easy leakage of gas in the cylinder when replenishing air into the cylinder. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the cylinder of this utility model;

[0017] Figure 3 This is a cross-sectional perspective view of the support cylinder of this utility model;

[0018] Figure 4 This is a sectional perspective view of the circular base and the fixing cylinder of this utility model;

[0019] In the diagram: 1. Cylinder; 2. Support assembly; 21. Support cylinder; 22. Mounting plate; 23. Fixing bolt; 24. Fixing hole; 25. Rubber ring; 26. Slot; 27. Ball bearing; 28. Groove; 3. Air supply assembly; 31. Round seat; 32. Cover; 33. Horizontal cavity; 34. Fixing cylinder; 35. Right-angle cavity; 36. Slide plate; 37. Spring; 38. Sliding column; 39. Sealing seat; 4. Piston rod; 5. Piston. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] Please see Figure 1-4 The present invention provides the following technical solution: a gas spring piston mechanism, including a cylinder 1, a piston rod 4 slidably connected to the upper side of the cylinder 1, a piston 5 fixed at the lower end of the piston rod 4, an air supply component 3 provided at the lower side of one end of the cylinder 1, and a support component 2 fixed at the upper end of the cylinder 1.

[0022] The support assembly 2 includes a support cylinder 21, a mounting plate 22, fixing bolts 23, fixing holes 24, rubber rings 25, slots 26, balls 27, and grooves 28. The support cylinder 21 is provided at the upper end of the cylinder 1 corresponding to the piston rod 4. The mounting plate 22 is fixed to the lower sides of both ends of the support cylinder 21. The mounting plate 22 is connected to the cylinder 1 by fixing bolts 23. The upper end of the cylinder 1 has fixing holes 24 corresponding to the fixing bolts 23. The lower side of the inside of the support cylinder 21 is fitted with rubber rings 25. The support cylinder 21 has slots 26 corresponding to the rubber rings 25. The upper side of the inside of the support cylinder 21 is provided with a number of balls 27. The support cylinder 21 has grooves 28 corresponding to the balls 27.

[0023] Specifically, after the support cylinder 21 is installed, the side of the piston rod 4 is tangent to the inner wall of the rubber ring 25 and the side of the ball 27, and the adjacent balls 27 form a 60-degree angle.

[0024] By adopting the above technical solution, after the support cylinder 21 is installed, the side of the piston rod 4 fits more closely with the rubber ring 25 and the ball bearings 27, and the ball bearings 27 can be evenly distributed.

[0025] Specifically, the mounting plate 22 has through holes corresponding to the fixing bolts 23, the lower end of the mounting plate 22 is flush with the lower end of the support cylinder 21, and the mounting plate 22 and the support cylinder 21 are welded as a whole.

[0026] By adopting the above technical solution, the fixing bolt 23 can pass through the mounting plate 22 and be screwed into the fixing hole 24. The lower end of the mounting plate 22 is flush with the lower end of the support cylinder 21, making the mounting plate 22 more stable in supporting and fixing the support cylinder 21.

[0027] In this embodiment, when using the gas spring piston mechanism, the device is installed in a suitable position, and nitrogen or other gas is injected into the cylinder 1. When the piston rod 4 is subjected to pressure, the piston rod 4 pushes the piston 5 to compress the gas in the cylinder 1, thereby performing buffering and protection. By setting the support assembly 2, the rubber ring 25 is inserted into the groove 26 of the support cylinder 21, and the support cylinder 21 is sleeved onto the piston rod 4. After the lower end of the support cylinder 21 contacts the upper end of the cylinder 1, the fixing bolts 23 in the mounting plate 22 are screwed into the fixing holes 24 to secure the mounting plate 22 and the support cylinder 21. With the piston rod 4 fixed in place, the side of the piston rod 4 is in close contact with the inner wall of several balls 27 and rubber ring 25. When the piston rod 4 extends or retracts, several balls 27 roll in the groove 28. Several balls 27 can support and limit the piston rod 4. At the same time, the rubber ring 25 plays a sealing role for the piston rod 4, thereby improving the sealing between the piston rod 4 and the cylinder 1. By setting the support component 2, the piston rod 4 can be supported and limited, avoiding the piston rod 4 from wearing the cylinder 1 when the piston rod 4 and the cylinder 1 are not coaxial, which would cause air leakage due to wear between the piston rod 4 and the cylinder 1. Example

[0028] The difference between this embodiment and embodiment 1 is that the air supply component 3 includes a round seat 31, a cover 32, a transverse cavity 33, a fixed cylinder 34, a right-angle cavity 35, a sliding plate 36, a spring 37, a sliding column 38, and a sealing seat 39. The round seat 31 is fixed to the lower side of one end of the cylinder 1, and the cover 32 is threaded to the other end of the round seat 31. A right-angle cavity 35 is opened on one side of the round seat 31, and a transverse cavity 33 is opened at one end of the right-angle cavity 35. A sealing seat 39 is provided on one side of the transverse cavity 33. A fixed cylinder 34 is fixed at the upper end of the round seat 31 at the position corresponding to the sealing seat 39. A sliding plate 36 is slidably connected in the fixed cylinder 34. A spring 37 is provided at the upper end of the sliding plate 36. The sliding plate 36 and the sealing seat 39 are connected by a sliding column 38.

[0029] By adopting the above technical solution, when it is necessary to replenish air into cylinder 1, the cover 32 at one end of the round seat 31 is unscrewed, and the air replenishment pipe is fixedly connected to one end of the round seat 31 and air is injected. The gas enters the right-angle cavity 35 and squeezes the sealing seat 39 to slide upward. The sealing seat 39 pushes the slide plate 36 at the upper end of the sliding column 38 to slide in the fixed cylinder 34. The spring 37 is compressed, and the gas enters cylinder 1 through the transverse cavity 33. After the air injection is completed, the spring 37 extends and pushes the slide plate 36 to return to its original position. At the same time, the sealing seat 39 at the lower end of the sliding column 38 seals one end of the transverse cavity 33. Then the cover 32 is screwed on. By setting the air replenishment component 3, it is convenient to replenish air into cylinder 1 and avoid the gas in cylinder 1 from easily leaking when replenishing air into cylinder 1.

[0030] Specifically, the height of the sealing seat 39 is the same as that of the transverse cavity 33, the side of the sealing seat 39 is in close contact with the inner wall of the right-angle cavity 35, and the upper end of the round seat 31 is provided with a sliding hole corresponding to the sliding column 38.

[0031] By adopting the above technical solution, the sealing seat 39 has a better sealing effect on one end of the transverse cavity 33, and the sliding column 38 can slide on the upper side of the round seat 31.

[0032] Specifically, the fixed cylinder 34 and the round seat 31, as well as the sealing seat 39 and the sliding column 38, are all spot welded together, and the side of the sliding plate 36 is in close contact with the inner wall of the fixed cylinder 34.

[0033] By adopting the above technical solution, spot welding makes the connection between the fixed cylinder 34 and the round seat 31, as well as between the sealing seat 39 and the sliding column 38, more secure, and the sliding plate 36 slides more stably in the fixed cylinder 34.

[0034] In this embodiment, by setting the air replenishment component 3, when it is necessary to replenish air into the cylinder 1, the cover 32 at one end of the round seat 31 is unscrewed, and the air replenishment pipe is fixedly connected to one end of the round seat 31 and air is injected. The gas enters the right-angle cavity 35 and squeezes the sealing seat 39 to slide upward. The sealing seat 39 pushes the slide plate 36 at the upper end of the sliding column 38 to slide in the fixed cylinder 34. The spring 37 is compressed, and the gas enters the cylinder 1 through the transverse cavity 33. After the air injection is completed, the spring 37 extends and pushes the slide plate 36 to return to its original position. At the same time, the sealing seat 39 at the lower end of the sliding column 38 seals one end of the transverse cavity 33. Then the cover 32 is screwed on. By setting the air replenishment component 3, it is convenient to replenish air into the cylinder 1 and avoid the gas in the cylinder 1 from easily leaking when replenishing air into the cylinder 1.

[0035] The working principle and usage process of this utility model: When using the gas spring piston mechanism, the device is installed in a suitable position, and nitrogen or other gas is injected into the cylinder 1. When the piston rod 4 is subjected to pressure, the piston rod 4 pushes the piston 5 to compress the gas in the cylinder 1, thereby performing buffering and protection. By setting the support assembly 2, the rubber ring 25 is inserted into the groove 26 of the support cylinder 21, and the support cylinder 21 is sleeved onto the piston rod 4. After the lower end of the support cylinder 21 contacts the upper end of the cylinder 1, the fixing bolts 23 in the mounting plate 22 are screwed into the fixing holes 24 to limit and fix the mounting plate 22 and the support cylinder 21. The side of the piston rod 4 is in close contact with several balls 27 and the inner wall of the rubber ring 25. When the piston rod 4 extends and retracts, several balls 27 roll in the rolling groove 28. Several balls 27 can support and limit the piston rod 4, while the rubber ring 25 plays a sealing role for the piston rod 4, thereby improving the sealing between the piston rod 4 and the cylinder 1. The piston rod 4 can be supported and limited by the support component 2, which prevents the piston rod 4 from wearing the cylinder 1 when the piston rod 4 and the cylinder 1 are not coaxial, thus avoiding air leakage caused by wear between the piston rod 4 and the cylinder 1. By setting the air replenishment component 3, when air needs to be replenished into the cylinder 1, the cover 32 at one end of the round seat 31 is unscrewed, and the air replenishment pipe is fixedly connected to one end of the round seat 31 and air is injected. The gas enters the right-angle cavity 35 and squeezes the sealing seat 39 to slide upward. The sealing seat 39 pushes the slide plate 36 at the upper end of the slide column 38 to slide in the fixed cylinder 34. The spring 37 is compressed, and the gas enters the cylinder 1 through the transverse cavity 33. After the air is injected, the spring 37 extends and pushes the slide plate 36 to return to its original position. At the same time, the sealing seat 39 at the lower end of the slide column 38 seals one end of the transverse cavity 33. Then the cover 32 is screwed on. By setting the air replenishment component 3, it is easy to replenish air into the cylinder 1 and avoid the gas in the cylinder 1 from easily leaking when replenishing air into the cylinder 1.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas spring piston mechanism, comprising a cylinder (1), wherein a piston rod (4) is slidably connected to the upper side of the cylinder (1), and a piston (5) is fixed to the lower end of the piston rod (4), characterized in that: A gas injection assembly (3) is provided on the lower side of one end of the cylinder (1), and a support assembly (2) is fixed on the upper end of the cylinder (1). The support assembly (2) includes a support cylinder (21), a mounting plate (22), a fixing bolt (23), a fixing hole (24), a rubber ring (25), a slot (26), a ball (27), and a groove (28). The support cylinder (21) is provided at the upper end of the cylinder (1) corresponding to the piston rod (4). The mounting plate (22) is fixed on the lower side of both ends of the support cylinder (21). The mounting plate (22) is connected to the cylinder (1) by the fixing bolt (23). The upper end of the cylinder (1) is provided with a fixing hole (24) corresponding to the fixing bolt (23). The lower side of the inside of the support cylinder (21) is fitted with a rubber ring (25). The support cylinder (21) is provided with a slot (26) corresponding to the rubber ring (25). The upper side of the inside of the support cylinder (21) is provided with a number of balls (27). The support cylinder (21) is provided with a groove (28) corresponding to the balls (27).

2. The gas spring piston mechanism according to claim 1, characterized in that: After the support cylinder (21) is installed, the side of the piston rod (4) is tangent to the inner wall of the rubber ring (25) and the side of the ball (27), and the adjacent balls (27) are at a 60-degree angle.

3. The gas spring piston mechanism according to claim 1, characterized in that: The mounting plate (22) has through holes corresponding to the fixing bolts (23). The lower end of the mounting plate (22) is flush with the lower end of the support cylinder (21). The mounting plate (22) and the support cylinder (21) are a welded integral structure.

4. The gas spring piston mechanism according to claim 1, characterized in that: The air supply component (3) includes a round seat (31), a cover (32), a transverse cavity (33), a fixed cylinder (34), a right-angle cavity (35), a sliding plate (36), a spring (37), a sliding column (38), and a sealing seat (39). The cylinder (1) has a round seat (31) fixed on the lower side of one end, and a cover (32) threaded to the other end of the round seat (31). A right-angle cavity (35) is opened on one side inside the round seat (31), and a transverse cavity (33) is opened at one end of the right-angle cavity (35). A sealing seat (39) is provided on one side of the transverse cavity (33). A fixed cylinder (34) is fixed at the upper end of the round seat (31) at the position corresponding to the sealing seat (39). A sliding plate (36) is slidably connected in the fixed cylinder (34). A spring (37) is provided at the upper end of the sliding plate (36). The sliding plate (36) and the sealing seat (39) are connected by a sliding column (38).

5. A gas spring piston mechanism according to claim 4, characterized in that: The height of the sealing seat (39) is the same as that of the horizontal cavity (33). The side of the sealing seat (39) is in close contact with the inner wall of the right-angle cavity (35). The upper end of the round seat (31) is provided with a sliding hole corresponding to the sliding column (38).

6. A gas spring piston mechanism according to claim 4, characterized in that: The fixed cylinder (34) and the round seat (31) and the sealing seat (39) and the sliding column (38) are all spot welded together, and the side of the sliding plate (36) is in close contact with the inner wall of the fixed cylinder (34).

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