Deviation-preventing nitrogen spring
By combining the built-in compression cylinder with plunger structure and arm force guide rod, the problem of increasing the size of the existing nitrogen spring structure is solved, stable anti-bias load and elastic buffering are achieved, flexible adaptation and elastic performance are improved, and dust pollution is prevented.
Patent Information
- Application Number
- CN202421119457.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing external arm force guide components of anti-biased nitrogen-loading springs lead to an increase in the structural size and insufficient flexible adaptation performance, which limits its application location and flexibility.
Using a built-in compression cylinder and plunger structure, combining compression spring and arm force guide rod components, the vertical telescopic guidance of the plunger is realized by combining support guide rod and arm force guide rod, and the threaded connection and inflation plug components are improved. Elastic cushioning and flexibility.
The plunger is stable, anti-biased and elastic buffering is achieved, which avoids additional space occupation, improves the flexible adaptability and elastic expansion performance of the nitrogen spring, and also closes the inflation port to prevent dust pollution.
Smart Images
Figure CN222208753U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nitrogen springs, in particular to an anti-bias type nitrogen spring. Background Art
[0002] Nitrogen spring is a new type of elastic component with high-pressure nitrogen as the working medium. It has the characteristics of small size, large elastic force, long stroke, stable operation, precise manufacturing and long service life. It is gradually replacing elastic elements such as springs, rubber and air cushions. There are many types of nitrogen springs. With the increasing application of nitrogen springs, its anti-eccentric load performance has gradually been paid more and more attention. For example, an anti-eccentric nitrogen spring disclosed by China Patent Network (public announcement number CN218094006U) adopts a clamping part and a guide sleeve when in use, which can guide the piston rod. The guide rod in the clamping part can slide up and down inside the guide sleeve. The two arc-shaped sleeves clamp the piston rod to realize the movement of the piston rod in the vertical direction and achieve the purpose of anti-eccentric load.
[0003] However, there are still some shortcomings in the above-mentioned patents and the anti-biased nitrogen springs adopted in the existing market: the existing method of using an external arm force guide component to guide the piston rod to prevent biased loads can play a good role in guiding anti-biased loads, but its external form can easily increase the overall structure size of the nitrogen spring, resulting in limited application places and insufficient flexible use performance. To this end, those skilled in the art provide an anti-biased nitrogen spring to solve the problems raised in the above background technology. Utility Model Content
[0004] The main purpose of the utility model is to provide an anti-biased nitrogen spring, which can effectively solve the problem of insufficient flexible adaptability of existing nitrogen springs in the background technology.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an anti-bias nitrogen spring, including a compression cylinder and a plunger inserted and installed on the top of the compression cylinder body;
[0006] A compression spring is arranged at the bottom of the chamber of the compression cylinder, and an arm force guide rod component extending to the inside of the plunger rod is arranged at the upper end of the spring seat of the compression spring;
[0007] The arm force guide rod component comprises a compression seat mounted on the top of the compression spring spring seat, a support arm rod is arranged in the middle of the support of the compression seat, and a support guide rod guided by the plunger is arranged at the top of the support arm rod;
[0008] The bottom end of the cylinder body of the compression cylinder is connected to a gas-filled plug component;
[0009] The bottom of the cylinder body of the compression cylinder is screwed with a connecting base, and the top of the column rod of the plunger is screwed with a connecting top seat.
[0010] As a further solution of the utility model: the outer diameter of the support of the compression seat is matched with the inner diameter of the cylinder body of the compression cylinder, and the compression seat is elastically guided by the compression spring and the compression cylinder.
[0011] As a further solution of the utility model: the core of the plunger rod is provided with a conducting cavity adapted to the supporting guide rod, and the supporting guide rod and the conducting cavity are slidably connected to each other.
[0012] As a further solution of the utility model: the support guide rod and the support arm rod are both hollow rod structures, and the support edge of the compression seat is provided with multiple groups of conducting holes arranged along its circumference.
[0013] As a further solution of the utility model: the inflation plug component includes an inflation port opened at the bottom end of the compression cylinder body and an inflation pipeline connected to the inflation port and extending to the inside of the compression cylinder body, the mating ends of the inflation port and the inflation pipeline are filled with an opening and closing ball core, and the upper end of the ball of the opening and closing ball core is provided with a return spring that presses against the compression cylinder.
[0014] As a further solution of the utility model: the bottom of the cylinder body of the compression cylinder is provided with a first threaded sleeve adapted to the connection base, and the top of the column rod of the plunger is provided with a second threaded sleeve adapted to the connection top seat.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. The nitrogen spring of the utility model uses a compression cylinder and a plunger as the main telescopic structure, and utilizes a combination of a compression spring and an arm force guide rod component as a built-in anti-biased load structure. On the one hand, it plays a built-in arm force guide for the expansion and contraction of the plunger, improves the stability of the plunger's vertical expansion and contraction braking, and realizes the anti-biased load function without occupying additional space, and has better flexible adaptability. On the other hand, it plays an elastic buffering role for the expansion and contraction of the plunger, and improves the elastic expansion and contraction performance of the nitrogen spring.
[0017] 2. When the nitrogen spring of the utility model is in use, the connecting top seat and the connecting base are connected in the form of a screwed assembly, which makes the integrated assembly more flexible. At the same time, the connecting base can be used to seal the inflation plug component of the nitrogen spring to prevent external dust from adhering to its inflation port and affecting the subsequent normal inflation performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of an anti-bias nitrogen spring of the utility model;
[0019] Figure 2 It is a schematic diagram of the unfolding structure of an anti-bias nitrogen spring of the utility model;
[0020] Figure 3 It is a partial cross-sectional view of an anti-bias nitrogen spring of the utility model;
[0021] Figure 4 It is a plan view of an anti-bias nitrogen spring of the utility model.
[0022] In the figure: 1. compression cylinder; 2. plunger; 3. connecting top seat; 4. connecting base; 5. first threaded sleeve; 6. second threaded sleeve; 7. inflation port; 8. compression spring; 9. arm force guide rod component; 91. compression seat; 92. support arm rod; 93. support guide rod; 10. inflation pipeline; 11. opening and closing ball core; 12. reset spring. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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.
[0026] Please refer to Figure 1-4As shown, an anti-bias nitrogen spring comprises a compression cylinder 1 and a plunger 2 which is inserted and installed on the top end of the cylinder body of the compression cylinder 1. A compression spring 8 is arranged at the bottom of the chamber of the compression cylinder 1, and an arm force guide rod component 9 extending to the inside of the rod of the plunger 2 is arranged at the upper end of the spring seat of the compression spring 8. The arm force guide rod component 9 comprises a compression seat 91 which is top-mounted on the top end of the spring seat of the compression spring 8, a support arm rod 92 is arranged in the middle of the support of the compression seat 91, and a support guide rod 93 which guides the plunger 2 is arranged at the top end of the arm of the support arm rod 92. The support guide rod 93 and the support arm rod 92 are both hollow rod structures, and a plurality of groups of conducting holes are arranged along the circumferential direction of the support edge of the compression seat 91. By setting the overall structure of the arm force guide rod component 9 as a conducting structure, the conducting and filling state of nitrogen in the compression cylinder 1 can be ensured, so as to provide a stable air pressure support effect on the plunger 2.
[0027] The outer diameter of the support of the compression seat 91 is matched with the inner diameter of the cylinder body of the compression cylinder 1, and the compression seat 91 is elastically guided with the compression cylinder 1 through the compression spring 8. The column core of the plunger 2 is provided with a conducting cavity matched with the support guide rod 93, and the support guide rod 93 is slidably connected with the conducting cavity. By utilizing the integrated combination of the compression seat 91, the support arm rod 92, and the support guide rod 93, when the plunger 2 is telescopically braked, the support guide rod 93 can be used to guide the arm force of the plunger 2 in the vertical direction, thereby improving its telescopic braking anti-eccentric load performance, and when the telescopic braking amplitude of the plunger 2 is too large and collides with the support guide rod 93, the elastic force combination of the arm force guide rod component 9 and the compression spring 8 can play an elastic supporting and buffering role, so as to reduce the impact force of the telescopic braking of the plunger 2 and improve the elastic telescopic performance of the nitrogen spring.
[0028] An inflation plug component is installed at the bottom end of the cylinder body of the compression cylinder 1, and the inflation plug component includes an inflation port 7 opened at the bottom end of the cylinder body of the compression cylinder 1 and an inflation pipeline 10 that is in communication with the inflation port 7 and extends to the inside of the cylinder body of the compression cylinder 1. The mating ends of the inflation port 7 and the inflation pipeline 10 are filled with an opening and closing ball core 11, and the upper end of the ball body of the opening and closing ball core 11 is provided with a return spring 12 that is pressed against the compression cylinder 1. When the nitrogen spring is inflated, the inflation head is inserted into the inflation port 7, and the opening and closing ball core 11 is pushed open, and the high-pressure nitrogen is pressed into the compression cylinder 1 through the inflation pipeline 10. After the subsequent nitrogen filling is completed, when the inflation head is pulled out, the opening and closing ball core 11 is elastically reset under the elastic support of the return spring 12, the inflation port 7 is sealed, and the nitrogen is trapped in the compression cylinder 1 as a pneumatic support medium.
[0029] A connecting base 4 is screwed on the bottom of the cylinder body of the compression cylinder 1, and a connecting top seat 3 is screwed on the top of the column rod of the plunger 2. A first threaded sleeve 5 matched with the connecting base 4 is provided at the bottom of the cylinder body of the compression cylinder 1, and a second threaded sleeve 6 matched with the connecting top seat 3 is provided at the top of the column rod of the plunger 2. By utilizing the threaded adaptation of the first threaded sleeve 5 and the connecting base 4, and the threaded adaptation of the connecting top seat 3 and the second threaded sleeve 6, the flexible installation of the nitrogen spring can be improved, and the installation can be flexibly selected according to the on-site assembly environment. In addition, by utilizing the threaded connection of the connecting base 4, the inflation port 7 can be covered in a closed manner to avoid dust adhering to the inflation port 7 during daily use, causing inconvenience in cleaning, and it is very easy to enter the interior of the nitrogen spring with the next nitrogen filling, affecting its normal operation.
[0030] The working principle of the utility model is: when the nitrogen spring is installed and used, the top seat 3 and the base 4 can be flexibly selected and screwed together according to the on-site environment to match the on-site environment;
[0031] Later, during the installation and use of the nitrogen spring, when the plunger 2 is telescopically braked, the integral combination of the compression seat 91, the support arm 92, and the support guide rod 93 can be used to guide the plunger 2 in the vertical direction, and its telescopic braking pressure is evenly dispersed and transmitted to the entire cylinder structure, thereby improving its telescopic braking anti-biased load performance. When the plunger 2 telescopic braking amplitude is too large and hits the support guide rod 93, the elastic force combination of the arm force guide rod component 9 and the compression spring 8 can play an elastic supporting and buffering role, so as to reduce the impact force of the telescopic braking of the plunger 2, play a dual role of elastic telescopic braking, and improve the elastic telescopic performance of the nitrogen spring.
[0032] When it is necessary to replenish air and inflate the gas subsequently, unscrew the connecting base 4, and then insert the inflation head into the inflation port 7, and push open the opening and closing ball core 11, and pressurize the high-pressure nitrogen into the compression cylinder 1 through the inflation pipeline 10. After the nitrogen filling is completed, when the inflation head is pulled out, the opening and closing ball core 11 is elastically reset under the elastic force of the reset spring 12, and the inflation port 7 is sealed, and the nitrogen is trapped in the compression cylinder 1, completing the inflation and replenishment work. At this time, the connecting base 4 is screwed and reset again, and the inflation port 7 is closed and covered to isolate it from the interference of external environmental factors and prevent external dust from adhering to its inflation port and affecting the subsequent normal inflation performance.
[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An anti-bias nitrogen spring, characterized in that: It comprises a compression cylinder (1) and a plunger (2) which is inserted and installed on the top end of the cylinder body of the compression cylinder (1); A compression spring (8) is arranged at the bottom of the chamber of the compression cylinder (1), and an arm force guide rod component (9) extending to the inside of the column rod of the plunger (2) is arranged at the upper end of the spring seat of the compression spring (8); The arm force guide rod component (9) comprises a compression seat (91) mounted on the top of a spring seat of a compression spring (8), a support arm (92) is arranged in the middle of the support of the compression seat (91), and a support guide rod (93) guiding the plunger (2) is arranged at the top of the arm of the support arm (92); The bottom end of the cylinder body of the compression cylinder (1) is connected to a gas-filled plug component; The bottom of the cylinder body of the compression cylinder (1) is screwed with a connecting base (4), and the top of the rod of the plunger (2) is screwed with a connecting top seat (3).
2. The anti-bias nitrogen gas spring according to claim 1, characterized in that: The support outer diameter of the compression seat (91) is matched to the cylinder body inner diameter of the compression cylinder (1), and the compression seat (91) is elastically guided by the compression cylinder (1) via the compression spring (8).
3. The anti-bias nitrogen gas spring according to claim 1, characterized in that: The column core of the plunger (2) is provided with a conducting cavity adapted to the supporting guide rod (93), and the supporting guide rod (93) and the conducting cavity are slidably connected to each other.
4. The anti-bias nitrogen gas spring according to claim 1, characterized in that: The support guide rod (93) and the support arm rod (92) are both hollow rod structures, and the support edge of the compression seat (91) is provided with a plurality of groups of conducting holes arranged along its circumference.
5. The anti-bias nitrogen gas spring according to claim 1, characterized in that: The inflation plug component comprises an inflation port (7) opened at the bottom end of the cylinder body of the compression cylinder (1) and an inflation pipeline (10) connected to the inflation port (7) and extending to the inside of the cylinder body of the compression cylinder (1); the mating ends of the inflation port (7) and the inflation pipeline (10) are filled with an opening and closing ball core (11), and the upper end of the ball of the opening and closing ball core (11) is provided with a return spring (12) for pressing against the compression cylinder (1).
6. The anti-bias nitrogen gas spring according to claim 1, characterized in that: A first threaded sleeve (5) adapted to the connection base (4) is provided at the bottom of the cylinder body of the compression cylinder (1), and a second threaded sleeve (6) adapted to the connection top seat (3) is provided at the top of the column rod of the plunger (2).