Inflation device
By designing an inflation device suitable for various shock absorbers, and utilizing the combination of airbag assembly and clamping fixture, the inflation process is simplified, solving the problems of cumbersome and narrow applicability of existing inflation methods, and improving production efficiency.
Patent Information
- Application Number
- CN202520018860.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Existing air-filling methods for shock absorbers are cumbersome and have limited applicability, making them unsuitable for various types of shock absorbers.
An inflation device was designed, including an airbag assembly, a first clamping fixture, and a second clamping fixture. By wrapping the oil seal with the airbag assembly, the pressure inside the airbag forces gas through the oil seal into the shock absorber, thereby enabling inflation of various types of shock absorbers.
It simplifies the inflation process, is applicable to various types of shock absorbers, reduces production costs, and improves factory efficiency.
Smart Images
Figure CN223622097U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shock absorber inflation technology, and in particular to an inflation device. Background Technology
[0002] Shock absorbers need to be inflated before leaving the factory. Currently, the most common inflation methods in the industry include bottom cover inflation. Bottom cover inflation requires drilling a small hole in the bottom cover. During shock absorber assembly, the hole is plugged with a rubber stopper. Before welding, the rubber stopper is removed and gas is injected. Welding is then performed after the shock absorber reaches a certain pressure. This inflation process is relatively cumbersome, and bottom cover inflation is only suitable for shock absorbers where the bottom needs to be welded. Other common inflation methods are also limited to certain types of shock absorbers, and their applicability is relatively narrow. Utility Model Content
[0003] Therefore, the main objective of this utility model is to provide an inflation device that is widely applicable and can inflate various types of shock absorbers.
[0004] To achieve the above objectives, this utility model provides an inflation device for inflating a shock absorber. The shock absorber includes a main body, a piston rod partially inserted into the main body, and an oil seal sleeved on the piston rod. The oil seal is used to achieve a seal between the piston rod and the main body. The inflation device comprises:
[0005] The airbag assembly is sealed outside the shock absorber and covers the oil seal; the airbag assembly has an air nozzle.
[0006] The first clamping device is fitted onto the piston rod and abuts against one end of the airbag assembly;
[0007] The second clamping fixture is fitted onto the main body and abuts against the other end of the airbag assembly.
[0008] Optionally, the airbag assembly includes a pressure cap, an inflatable airbag, and a plug connected in sequence. The air nozzle is disposed on the plug. The pressure cap has a first opening, and the plug has a second opening. The airbag assembly is sleeved on the outside of the shock absorber through the first opening and the second opening. The pressure cap is sleeved on the piston rod, the plug is sleeved on the main body, and the inflatable airbag wraps around the oil seal.
[0009] The first clamping fixture abuts against the end of the pressure cap away from the airbag, and the second clamping fixture abuts against the end of the plug away from the airbag, so as to limit the airbag assembly in the direction of the piston rod axis.
[0010] Optionally, a first sealing ring is provided at the first opening of the cap to achieve a seal between the cap and the piston rod, and a second sealing ring is provided at the second opening of the plug to achieve a seal between the plug and the body.
[0011] Optionally, the airbag is made of an elastic material, the cap is made of a rigid material, and the plug is made of a rigid material.
[0012] Optionally, the airbag assembly further includes a first pressure ring and a second pressure ring. The first pressure ring is sleeved on one end of the airbag connected to the pressure cap, and the first pressure ring is used to tightly press one end of the airbag against the outer wall of the pressure cap. The second pressure ring is sleeved on one end of the airbag connected to the plug, and the second pressure ring is used to tightly press the other end of the airbag against the outer wall of the plug.
[0013] Optionally, the inner sidewalls at opposite ends of the inflatable bladder are respectively provided with first meshing teeth, and the outer sidewalls of the pressure cap and the outer sidewalls of the plug are respectively provided with second meshing teeth that are adapted to the first meshing teeth.
[0014] Optionally, the inflation device further includes a first positioning structure and a second positioning structure, wherein the first positioning structure is used to position the first clamping fixture, and the second positioning structure is used to position the second clamping fixture.
[0015] Optionally, the second pressure ring includes a first half-ring and a second half-ring, which can close together to hug the main body.
[0016] Optionally, the inflation device further includes an air supply component for communicating with the air nozzle to inflate the airbag assembly through the air nozzle.
[0017] Optionally, the inflation device further includes a quick-connect fitting for the air hose, one end of which is connected to the air nozzle, and the other end of which is connected to the air supply component.
[0018] Advantages of this utility model: When it is necessary to inflate the shock absorber, the airbag assembly is fitted onto the outside of the shock absorber and wraps around the oil seal. Then, the first clamping fixture is fitted onto the piston rod and abuts against one end of the airbag assembly, and the second clamping fixture is fitted onto the main body and abuts against the other end of the airbag assembly, thereby positioning the airbag assembly. Then, air is inflated into the airbag assembly. As the pressure inside the airbag assembly gradually increases, under the action of pressure, the gas inside the airbag assembly enters the interior of the shock absorber through the oil seal, thereby inflating the shock absorber. The inflation device of this application is applicable to various types of shock absorbers, and the inflation method is consistent. Simply wrap the airbag assembly around the oil seal and then inflate it. Under the action of air pressure, the gas is injected into the interior of the shock absorber through the oil seal. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the devices shown in these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of an inflation device and a shock absorber in one embodiment.
[0021] Figure 2 for Figure 1 A sectional view;
[0022] Figure 3 This is a schematic diagram of the structure of an inflation device according to one embodiment;
[0023] Figure 4 This is a schematic diagram of the structure of an inflation device according to one embodiment;
[0024] Among them, 100 is the airbag assembly; 110 is the pressure cap; 120 is the inflatable airbag; 121 is the first meshing tooth; 130 is the plug; 131 is the air nozzle; 132 is the second meshing tooth; 140 is the first pressure ring; 150 is the second pressure ring; 200 is the first clamping fixture; 300 is the second clamping fixture; 400 is the first sealing ring; 500 is the second sealing ring; 600 is the air supply component; and 700 is the quick-connect fitting for the air hose.
[0025] 1. Shock absorber; 11. Main body; 12. Piston rod; 13. Oil seal.
[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0027] 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.
[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, "and / or" throughout the text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0029] like Figure 1 and Figure 2 As shown, an inflation device is used to inflate a shock absorber 1. The shock absorber 1 includes a main body 11, a piston rod 12 partially inserted into the main body 11, and an oil seal 13 sleeved on the piston rod 12. The oil seal 13 is used to achieve a seal between the piston rod 12 and the main body 11. The inflation device includes an airbag assembly 100, a first clamping fixture 200, and a second clamping fixture 300. The airbag assembly 100 is sealed and sleeved outside the shock absorber 1 and covers the oil seal 13. The airbag assembly 100 has an air nozzle 131. The first clamping fixture 200 is sleeved on the piston rod 12 and abuts against one end of the airbag assembly 100. The second clamping fixture 300 is sleeved on the main body 11 and abuts against the other end of the airbag assembly 100.
[0030] When it is necessary to inflate the shock absorber 1, the airbag assembly 100 is fitted onto the outside of the shock absorber 1 and the airbag assembly 100 covers the oil seal 13. Then, the first clamping fixture 200 is fitted onto the piston rod 12 and abuts against one end of the airbag assembly 100, and the second clamping fixture 300 is fitted onto the main body 11 and abuts against the other end of the airbag assembly 100, thereby positioning the airbag assembly 100. Then, air is inflated into the airbag assembly 100. As the pressure inside the airbag assembly 100 gradually increases, under the action of pressure, the gas inside the airbag assembly 100 enters the interior of the shock absorber 1 through the oil seal 13, thereby inflating the shock absorber 1. The inflation device of this application is applicable to various types of shock absorbers 1, and the inflation method is the same. It is only necessary to wrap the airbag assembly 100 around the oil seal 13 and then inflate it, so that the gas can be filled into the interior of the shock absorber 1 through the oil seal 13 under the action of air pressure.
[0031] Furthermore, in the existing technology, factories need to produce various types of shock absorbers 1, and in order to produce various types of shock absorbers 1, they need to produce various types of inflatable structures, which leads to the need for various different molds and factories, thereby increasing the cost of the factory and reducing the efficiency of the factory.
[0032] In this embodiment, the inflation device also includes an air needle, which is used to pry open the oil seal 13 and insert between the oil seal 13 and the piston rod 12. This allows the gas in the airbag assembly 100 to quickly enter the shock absorber 1 through the gap between the oil seal 13 and the piston rod 12 during inflation, thereby achieving rapid inflation of the shock absorber 1. After the shock absorber 1 is fully inflated, the pressure inside the shock absorber 1 will push the air needle out.
[0033] refer to Figure 2 and Figure 3 The airbag assembly 100 includes a pressure cap 110, an airbag 120, and a plug 130 connected in sequence. An air nozzle 131 is disposed on the plug 130. The pressure cap 110 has a first opening, and the plug 130 has a second opening. The airbag assembly 100 is sleeved on the outside of the shock absorber 1 through the first and second openings. The pressure cap 110 is sleeved on the piston rod 12, and the plug 130 is sleeved on the main body 11. The airbag 120 covers the oil seal 13. A first clamping fixture 200 abuts against the end of the pressure cap 110 away from the airbag 120, and a second clamping fixture 300 abuts against the end of the plug 130 away from the airbag 120, so as to limit the airbag assembly 100 in the axial direction of the piston rod 12. Specifically, the movement of the airbag assembly 100 is restricted by the cooperation of the first clamping fixture 200 and the second clamping fixture 300, so as to avoid the position of the airbag assembly 100 shifting due to the gradual increase of gas in the airbag assembly 100 during the inflation process.
[0034] refer to Figure 2 and Figure 4A first sealing ring 400 is provided at the first opening of the pressure cap 110 to achieve a seal between the pressure cap 110 and the piston rod 12, and a second sealing ring 500 is provided at the second opening of the plug 130 to achieve a seal between the plug 130 and the main body 11. Specifically, the provision of the first sealing ring 400 and the second sealing ring 500 ensures a seal between the airbag assembly 100 and the shock absorber 1, preventing gas from escaping from the airbag assembly 100 during inflation, thus affecting the inflation effect of the shock absorber 1. In this embodiment, both the first sealing ring 400 and the second sealing ring 500 are O-rings.
[0035] Furthermore, the inner wall of the first opening of the pressure cap 110 is provided with a first groove for accommodating the first sealing ring 400, and the inner wall of the second opening of the plug 130 is provided with a second groove for accommodating the second sealing ring 500.
[0036] Specifically, the number of first sealing rings 400 and / or second sealing rings 500 can be two or more, and two or more first sealing rings 400 and / or second sealing rings 500 can achieve a better sealing effect. In addition, the number of first grooves corresponds to the number of first sealing rings 400, and the number of second grooves corresponds to the number of second sealing rings 500.
[0037] Optionally, the airbag 120 is made of an elastic material. Specifically, the airbag 120 is made of an elastic material so that it can be stretched, thereby adapting to shock absorbers 1 of different lengths or types. In this embodiment, the airbag 120 is made of rubber. It is understood that in other embodiments, the airbag 120 may also be made of an elastic material other than rubber.
[0038] In this embodiment, the two ends of the airbag 120 are curved to make the airbag 120 more load-bearing and reduce the risk of damage to the airbag 120 during inflation.
[0039] Optionally, the cap 110 and the plug 130 are both made of a rigid material. Specifically, the cap 110 and the plug 130 act as a skeleton, facilitating the first clamping fixture 200 and the second clamping fixture 300 to hold and limit the airbag assembly 100. In this embodiment, the cap 110 is made of metal, and the plug 130 is made of plastic. The plug 130 is larger, and using plastic is less costly. It is understood that in other embodiments, the cap 110 is made of a rigid material such as plastic, and the plug 130 is made of a rigid material such as metal.
[0040] refer to Figure 2-4The airbag assembly 100 also includes a first pressure ring 140 and a second pressure ring 150. The first pressure ring 140 is sleeved on one end of the airbag 120 connected to the pressure cap 110, and is used to tightly press one end of the airbag 120 against the outer wall of the pressure cap 110. The second pressure ring 150 is sleeved on one end of the airbag 120 connected to the plug 130, and is used to tightly press the other end of the airbag 120 against the outer wall of the plug 130. Specifically, the arrangement of the first pressure ring 140 and the second pressure ring 150 makes the connection or engagement between the airbag 120 and the pressure cap 110 and the plug 130 more reliable, reducing the risk of the airbag 120 breaking or being damaged during inflation. In this embodiment, the first pressure ring 140 and the second pressure ring 150 are made of metal.
[0041] refer to Figure 4 The inner walls of the inflatable bladder 120 at opposite ends are respectively provided with first engaging teeth 121, and the outer walls of the cap 110 and the plug 130 are respectively provided with second engaging teeth 132 that are adapted to the first engaging teeth 121. Specifically, the arrangement of the first engaging teeth 121 and the second engaging teeth 132 makes the connection or engagement between the inflatable bladder 120 and the cap 110 and the plug 130 more reliable, further reducing the risk of the inflatable bladder 120 breaking or being damaged during inflation when it is connected or engaged with the cap 110 and the plug 130.
[0042] The inflation device also includes a first positioning structure (not shown) and a second positioning structure (not shown). The first positioning structure is used to position the first clamping fixture 200, and the second positioning structure is used to position the second clamping fixture 300. Specifically, the first positioning structure and the second positioning structure can be internal structures of the inflation device or external structures, as long as they can achieve the positioning of the first pressure ring 140 and the second pressure ring 150.
[0043] The second pressure ring 150 includes a first half-ring and a second half-ring, which can close together to hug the main body 11. Specifically, the first half-ring and the second half-ring have an "annular arch" structure; the second positioning structure abuts against the first half-ring and the second half-ring respectively, so that the first half-ring and the second half-ring close together to hug the main body 11.
[0044] The inflation device also includes an air supply component 600, which communicates with an air nozzle 131 to inflate the airbag assembly 100 via the air nozzle 131. Specifically, the air supply component 600 can be an internal or external structure of the inflation device, as long as it can inflate the airbag assembly 100. In one embodiment, the air supply component 600 provides compressed gas or high-pressure gas. The air supply component 600 can be, but is not limited to, an air canister.
[0045] refer to Figure 2The inflation device also includes a quick-connect fitting 700 for the air hose. One end of the quick-connect fitting 700 is connected to the air nozzle 131, and the other end is connected to the air supply unit 600. The air hose quick-connect fitting...
[0046] refer to Figure 2 The inflation device also includes a quick-connect fitting 700 for the air hose. One end of the quick-connect fitting 700 is connected to the air nozzle 131, and the other end is used to connect to the air supply unit 600. The quick-connect fitting 700 allows for quick connection between the air nozzle 131 and the air supply unit 600.
[0047] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent device transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. An inflation device for inflating a shock absorber, the shock absorber comprising a main body, a piston rod partially inserted into the main body, and an oil seal sleeved on the piston rod, the oil seal being used to achieve a seal between the piston rod and the main body, characterized in that, The inflation device includes: The airbag assembly is sealed outside the shock absorber and covers the oil seal; the airbag assembly has an air nozzle. The first clamping device is fitted onto the piston rod and abuts against one end of the airbag assembly; The second clamping fixture is fitted onto the main body and abuts against the other end of the airbag assembly.
2. The inflation device as described in claim 1, characterized in that, The airbag assembly includes a pressure cap, an airbag, and a plug connected in sequence. The air nozzle is disposed on the plug. The pressure cap has a first opening, and the plug has a second opening. The airbag assembly is sleeved on the outside of the shock absorber through the first opening and the second opening. The pressure cap is sleeved on the piston rod, and the plug is sleeved on the main body. The airbag wraps around the oil seal. The first clamping fixture abuts against the end of the pressure cap away from the airbag, and the second clamping fixture abuts against the end of the plug away from the airbag, so as to limit the airbag assembly in the direction of the piston rod axis.
3. The inflation device as described in claim 2, characterized in that, A first sealing ring is provided at the first opening of the pressure cap to achieve a seal between the pressure cap and the piston rod, and a second sealing ring is provided at the second opening of the plug to achieve a seal between the plug and the main body.
4. The inflation device as described in claim 2, characterized in that, The air bladder is made of an elastic material, the pressure cap is made of a rigid material, and the plug is made of a rigid material.
5. The inflation device as described in claim 2, characterized in that, The airbag assembly further includes a first pressure ring and a second pressure ring. The first pressure ring is sleeved on one end of the airbag connected to the pressure cap and is used to tightly press one end of the airbag against the outer wall of the pressure cap. The second pressure ring is sleeved on one end of the airbag connected to the plug and is used to tightly press the other end of the airbag against the outer wall of the plug.
6. The inflation device as described in claim 5, characterized in that, The inner walls of the two opposite ends of the inflatable bladder are respectively provided with first meshing teeth, and the outer walls of the pressure cap and the outer walls of the plug are respectively provided with second meshing teeth that are adapted to the first meshing teeth.
7. The inflation device as described in claim 1, characterized in that, The inflation device further includes a first positioning structure and a second positioning structure, wherein the first positioning structure is used to position the first clamping fixture, and the second positioning structure is used to position the second clamping fixture.
8. The inflation device as described in claim 1, characterized in that, The second pressure ring includes a first half-ring and a second half-ring, which can close together to hug the main body.
9. The inflation device as described in claim 1, characterized in that, The inflation device further includes an air supply component, which is used to communicate with the air nozzle to inflate the airbag assembly through the air nozzle.
10. The inflation device as described in claim 9, characterized in that, The inflation device also includes a quick-connect fitting for the air hose, one end of which is connected to the air nozzle, and the other end of which is connected to the air supply component.