Pipeline connecting structure and damper

Abstract

The utility model discloses a pipeline connecting structure which comprises a connector, an anti-pulling buckle and a first sealing ring, one end of the connector can be installed on a damper body, a channel penetrating through the two ends is arranged in the connector, one end of the channel is communicated with the damper body, and a first conical surface is arranged at the end, close to the damper body, of the channel along the inner circumference. The flaring end of the first conical face faces the damper body, a first limiting face is arranged on the side, close to the damper body, of the first conical face, the anti-pulling buckle is arranged between the first conical face and the first limiting face, a notch is formed in one side of the anti-pulling buckle and is of a C-shaped structure, and a step capable of being inserted into a pipeline and preventing the pipeline from being pulled out is arranged on the inner circumference of the anti-pulling buckle. The first sealing ring is installed in the channel and located on the side, away from the damper body, of the first conical surface. The utility model further provides the damper with the connecting structure, the pipeline is installed in a direct insertion mode, the installation efficiency is improved, the end of the pipeline can rotate, the torque of the connector is reduced, and the connector is prevented from loosening.

Description

Technical Field

[0001] This utility model relates to the field of damper technology, and in particular to a pipeline connection structure and a damper. Background Technology

[0002] As shown in patent application number CN201520816330.8, the damper for external pipelines on the market includes a damper assembly, an air pipe, and a connector through-hole screw. One end of the air pipe is fixed to one end of the damper assembly via the connector through-hole screw. Gas in the damper assembly enters and exits the damper assembly through the connector through-hole screw. The existing air pipe connection structure has the following defects: First, when installing the air pipe, the end of the air pipe needs to be installed on the connector through-hole screw first, and then the connector through-hole screw is tightened on the damper assembly, which is inefficient. Second, after the air pipe is installed, the end of the air pipe cannot rotate around the connector through-hole screw. When the air pipe is subjected to external force, it is easy to transmit torque to the connector through-hole screw, causing the connector through-hole screw to loosen, which in turn leads to air leakage of the damper. Utility Model Content

[0003] To address the aforementioned shortcomings of existing dampers, this invention proposes a pipe connection structure and damper. The pipe is installed via direct insertion, improving installation efficiency. The pipe end is rotatable, reducing joint torque and preventing joint loosening.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A pipe connection structure includes a connector, an anti-pull buckle, and a first sealing ring. One end of the connector can be installed on the damper body. The connector has a channel that runs through both ends. One end of the channel is connected to the damper body. The end of the channel near the damper body has a first conical surface along its inner circumference. The flared end of the first conical surface faces the damper body. A first limiting surface is provided on the side of the first conical surface near the damper body. The anti-pull buckle is located between the first conical surface and the first limiting surface. A notch is provided on one side of the anti-pull buckle, forming a C-shaped structure. The anti-pull buckle has a step along its inner circumference that allows the pipe to be inserted and prevents the pipe from being pulled out. The inner diameter of the step is smaller than the outer diameter of the pipe. The first sealing ring is installed in the channel and is located on the side of the first conical surface away from the damper body.

[0006] With the above settings, firstly, the pipe end can be directly inserted into the connector, making installation more convenient; secondly, the pipe end can be rotated, reducing the connector torque, thereby preventing the connector from loosening and improving the stability of the pipe connection.

[0007] Furthermore, the outer side of the anti-pull buckle is provided with a machined surface to reduce the thickness of the anti-pull buckle at the machined surface.

[0008] With the above settings, the anti-pull buckle is more easily deformed, making it easier for pipelines to pass through it.

[0009] Furthermore, the anti-pull buckle has a chamfer parallel to the first conical surface along its outer periphery on the side closest to the first conical surface.

[0010] The above settings reduce wear between the first conical surface and the anti-pull buckle.

[0011] Furthermore, the outer side of the connector is not circular.

[0012] The above settings facilitate the rotation of the joint.

[0013] Furthermore, the damper body is provided with a first mounting hole for installing a connector, and the inner side of the first mounting hole is raised to form the aforementioned first limiting surface.

[0014] Furthermore, a first sealing groove is provided circumferentially at the outer end of the first mounting hole, and a second conical surface is provided along the first sealing groove. A second limiting surface facing the damper body is provided on the outer periphery of the connector. The connection structure also includes a second sealing ring. The second sealing ring is fitted on the connector and abuts against the second limiting surface. When the connector is installed in the first mounting hole, the second sealing ring is embedded in the first sealing groove, and the second conical surface squeezes the second sealing ring.

[0015] The above settings improve the sealing between the first mounting hole and the connector.

[0016] Furthermore, the connection structure also includes an adapter pipe, one end of which can be installed in the first mounting hole, and the other end of which is provided with a second mounting hole for installing a connector. The inner side of the adapter pipe is raised to form the aforementioned first limiting surface.

[0017] With the above setup, the end of the corrugated pipe can be fitted onto the adapter pipe and connector to prevent the end of the corrugated pipe from falling off the connector.

[0018] Furthermore, a second sealing groove is provided circumferentially at the outer end of the first mounting hole, and a third conical surface is provided along the second sealing groove. When the connector is installed in the second mounting hole, the second sealing ring is embedded in the second sealing groove, and the third conical surface squeezes the second sealing ring.

[0019] The above settings increase the sealing between the connector and the second mounting hole.

[0020] Furthermore, the included angle between the joint and the damper body is α, 15°. <a<75°。

[0021] With the above configuration, the pipeline connected to the damper body can easily extend to the side of the damper body, and the end of the pipeline close to the damper body is less likely to bend and become blocked.

[0022] A damper includes the aforementioned damper body and connecting structure. The damper body includes a connecting seat, a cylinder, a piston, a piston rod, and a plug. The connecting seat is installed at the lower end of the cylinder. The piston is slidably connected in the cylinder. A chamber is formed between the piston, the cylinder, and the connecting seat. The connecting structure is installed on the connecting seat. A pipeline communicates with the chamber through the connecting structure. The plug is installed at the upper end of the cylinder. The piston rod passes through the plug and is slidably connected to the plug. The lower end of the piston rod is fixedly connected to the piston. An air outlet is provided on the plug. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the damper in an embodiment.

[0024] Figure 2 This is a cross-sectional view of the damper in an embodiment.

[0025] Figure 3 for Figure 2 Enlarged view of point A.

[0026] Figure 4 for Figure 2 Enlarged view of point B.

[0027] Figure 5 for Figure 2 Enlarged view of point C.

[0028] Figure 6 This is a schematic diagram of the connector being directly mounted on the damper body as an example.

[0029] Figure 7 This is a schematic diagram of the connector and anti-pull buckle as an example.

[0030] Figure 8 This is a schematic diagram of the pipeline connected to the damper body via a connection structure, as shown in the embodiment. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0032] For example Figures 1 to 8As shown, a pipe connection structure includes a connector 2, an anti-pull buckle 3, and a first sealing ring 4. One end of the connector 2 can be installed on the damper body 5. A channel penetrating both ends is provided inside the connector 2. One end of the channel is connected to the damper body 5. A first conical surface 6 is provided along the inner circumference of the end of the channel near the damper body 5. The flared end of the first conical surface 6 faces the damper body 5. A first limiting surface 7 is provided on the side of the first conical surface 6 near the damper body 5. The anti-pull buckle 3 is located between the first conical surface 6 and the first limiting surface 7. A notch 8 is provided on one side of the anti-pull buckle 3, forming a C-shaped structure. A step 9 is provided along the inner circumference of the anti-pull buckle 3, which can be inserted into the pipe and prevent the pipe from being pulled out. The inner diameter of the step 9 is smaller than the outer diameter of the pipe. The first sealing ring 4 is installed in the channel, located on the side of the first conical surface 6 away from the damper body 5.

[0033] With the above settings, firstly, the pipe end can be directly inserted into the connector 2, making installation more convenient; secondly, the pipe end can be rotated, reducing the torque of the connector 2, thereby preventing the connector 2 from loosening and improving the stability of the pipe connection.

[0034] The damper body 5 of this application is the telescopic part of a gas damper or a freely stop damper. The damper body 5 can be used in vehicles, machinery, or other fields. The damper body 5 of this application is mainly used in the tailgate of a vehicle. The lower end of the damper body 5 is hinged to the vehicle, and the upper end of the damper body 5 is hinged to the tailgate. The damper body 5 extends and retracts with the opening and closing of the tailgate. The pipeline of this application is a hose pre-installed on the vehicle for the flow of oil, gas, or liquid. Taking a gas usage environment as an example, one end of the pipeline is connected to the air pump on the vehicle. The connector 2 is pre-installed on the damper body 5 before leaving the factory by welding, threading, or snap-fitting. The connector 2 has a channel for gas flow inside. One or more annular grooves are provided at the end of the channel away from the damper body 5. In this application, two annular grooves are specifically provided, each annular... Each groove is equipped with a first sealing ring 4 to improve sealing. The anti-pull buckle 3 is made of metal or plastic elastic material, allowing it to expand and contract appropriately. The anti-pull buckle 3 is made of copper to prevent rust. The step 9 is integrally formed inside the anti-pull buckle 3. The side of the step 9 away from the damper body 5 has a slope. The inner diameter of the step 9 is smaller than the outer diameter of the pipe. When the end of the pipe away from the air pump is installed, it is directly inserted into the connector 2 through the first sealing ring 4. When the end of the pipe contacts the slope of the step 9 of the anti-pull buckle 3, it will push the anti-pull buckle 3 towards the damper body 5. When the anti-pull buckle 3 contacts the first limiting surface 7, it cannot continue to move forward. If it continues to be inserted into the pipe, the end of the pipe will squeeze the slope, and the slope will apply an outward force to the anti-pull buckle 3. The anti-pull buckle 3 will expand outward elastically, allowing the end of the pipe to pass through the anti-pull buckle 3. Figure 8As shown, at this time, the anti-pull buckle 3 is elastically fastened to the pipe 19. The cross-section of the step 9 is a right-angled triangle, and the inner side of the step 9 forms a sharp angle. When the pipe is pulled outward, the anti-pull buckle 3 moves outward synchronously with the pipe. When the anti-pull buckle 3 contacts the first conical surface 6, the anti-pull buckle 3 retracts inward and locks the pipe, preventing the pipe from continuing to move outward, thus achieving the anti-pull function. The first sealing ring 4 ensures the sealing between the connector 2 and the pipe, preventing air leakage from the connector 2. At this point, the pipe installation is complete, and the vehicle's air pump can be connected. Air is blown into the damper body 5 through the pipeline to control the extension and retraction of the damper body 5, thereby controlling the tailgate opening and closing; a bellows 20 is then fitted onto the pipeline to cover it and improve its appearance. The end of the bellows is tightly fitted onto the connector 2 and moves with the connector 2; the first sealing ring 4 and the step 9 of this application are both arranged along the circumference of the pipeline, and the end of the pipeline can rotate relative to the axis of the connector 2 with relatively small resistance. That is, in use, when the end of the pipeline rotates, the torque on the connector 2 is smaller, and the connector 2 is not easy to loosen.

[0035] As one implementation method, the outer side of the anti-pull buckle 3 is provided with a machined surface 10 to reduce the thickness of the anti-pull buckle 3 at the machined surface 10.

[0036] With the above settings, the anti-pull buckle 3 is more easily deformed, making it easier for pipelines to pass through the anti-pull buckle 3.

[0037] The machining surface 10 of this application is specifically a plane, which can be obtained by milling on the outside of the anti-pull buckle 3. The side of the anti-pull buckle 3 away from the notch 8 is thinned. When the pipeline is inserted into the connector 2, the anti-pull buckle 3 can be easily pushed open to complete the pipeline connection.

[0038] As one implementation method, the anti-pull buckle 3 has a chamfer 11 parallel to the first conical surface 6 along its outer periphery on the side near the first conical surface 6.

[0039] The above settings reduce wear between the first conical surface 6 and the anti-pull buckle 3.

[0040] When the anti-pull buckle 3 of this application is pulled outward by the pipeline, the chamfer 11 on the outer side of the anti-pull buckle 3 fits against the first conical surface 6. The chamfer 11 increases the contact area between the anti-pull buckle 3 and the connector 2, and the force between the anti-pull buckle 3 and the connector 2 is more balanced, thereby reducing the wear between the anti-pull buckle 3 and the connector 2.

[0041] As one implementation method, the outer side of connector 2 is non-circular.

[0042] The above settings facilitate the rotation of joint 2.

[0043] The outer side of the connector 2 in this application is set as a polygon, which makes it convenient to use a wrench to rotate the connector 2 to screw the connector 2 onto the damper body 5.

[0044] As one implementation method, the damper body 5 is provided with a first mounting hole 12 for mounting the connector 2. The inner side of the first mounting hole 12 is raised to form the aforementioned first limiting surface 7.

[0045] like Figure 6 As shown, an internal thread is provided in the first mounting hole 12 to facilitate the threaded installation of the connector 2 on the damper body 5.

[0046] As one implementation, a first sealing groove is provided circumferentially at the outer end of the first mounting hole 12, and a second conical surface 13 is provided along the first sealing groove. A second limiting surface 14 facing the damper body 5 is provided on the outer periphery of the connector 2. The connection structure also includes a second sealing ring 18. The second sealing ring is fitted on the connector 2 and abuts against the second limiting surface 14. When the connector 2 is installed in the first mounting hole 12, the second sealing ring is embedded in the first sealing groove, and the second conical surface 13 squeezes the second sealing ring.

[0047] The above settings improve the sealing between the first mounting hole 12 and the connector 2.

[0048] like Figure 6 As shown, when the connector 2 is tightened onto the damper body 5, the second sealing ring is pressed between the second conical surface 13 and the second limiting surface 14 to prevent air leakage from the first mounting hole 12.

[0049] In another embodiment, such as Figure 4 The connection structure also includes a connector 15, one end of which can be installed in the first mounting hole 12, and the other end of which is provided with a second mounting hole 16 for installing the connector 2. The inner side of the connector 15 is raised to form the aforementioned first limiting surface 7.

[0050] With the above arrangement, the end of the corrugated pipe can be fitted onto the adapter pipe 15 and the connector 2 to prevent the end of the corrugated pipe from falling off the connector 2.

[0051] In this application, connector 2 is connected to damper body 5 via adapter pipe 15. One end of adapter pipe 15 is threaded into the first mounting hole 12, and the end of connector 2 is threaded into the second mounting hole 16 at the other end of adapter pipe 15. The outer diameter of adapter pipe 15 is substantially the same as the outer diameter of the outer end of connector 2. Figure 8 As shown, the end of the corrugated pipe can be fitted onto the adapter pipe 15 and the connector 2, increasing the contact area between the end of the corrugated pipe and the connecting structure, making the end of the corrugated pipe fit more securely, and preventing the end of the corrugated pipe from falling off the connector 2.

[0052] As one implementation, a second sealing groove is provided circumferentially at the outer end of the first mounting hole 12, and a third conical surface 17 is provided along the second sealing groove. When the connector 2 is installed in the second mounting hole 16, the second sealing ring is embedded in the second sealing groove, and the third conical surface 17 squeezes the second sealing ring.

[0053] The above settings increase the sealing between connector 2 and the second mounting hole 16.

[0054] like Figure 8 As shown, when the connector 2 is tightened into the second mounting hole 16, the second sealing ring on the connector 2 is pressed between the second limiting surface 14 and the third conical surface 17 to prevent air leakage between the connector 2 and the second mounting hole 16.

[0055] As one implementation method, the included angle between the connector 2 and the damper body 5 is α, 15°. <a<75°。

[0056] With the above configuration, the pipeline connected to the damper body 5 can extend to one side of the damper body 5, and the end of the pipeline close to the damper body 5 is less likely to bend and become blocked.

[0057] Since the damper body 5 of this application is used in the tailgate of a vehicle, the pipeline is specifically connected to the lower end of the damper body 5. The space at the lower end of the damper body 5 is narrow. When the pipeline extends to the lower part of the damper body 5, it needs to bend upward to connect to the lower end of the damper body 5. There is an angle α between the connector 2 and the damper body 5 of this application. α is basically 45°, which reduces the bend of the pipeline and prevents the pipeline from being bent and causing blockage.

[0058] A damper includes the aforementioned damper body 5 and a connecting structure. The damper body 5 includes a connecting seat 51, a cylinder 52, a piston 53, a piston rod 54, and a plug 55. The connecting seat 51 is installed at the lower end of the cylinder 52. The piston 53 is slidably connected in the cylinder 52, and a chamber is formed between the piston 53, the cylinder 52, and the connecting seat 51. The connecting structure is installed on the connecting seat 51, and a pipeline communicates with the chamber through the connecting structure. The plug 55 is installed at the upper end of the cylinder 52. The piston rod 54 passes through the plug 55 and is slidably connected to the plug 55. The lower end of the piston rod 54 is fixedly connected to the piston 53. An air outlet 551 is provided on the plug 55.

[0059] The damper body 5 of this application is as follows: Figure 2As shown, the upper end of the piston rod at the top of the damper body is hinged to the tailgate, and the lower end is hinged to the vehicle via a connecting seat. The upper end of the cylinder 52 is connected to the outside through an air outlet to maintain a constant pressure. The chamber at the lower end of the cylinder 52 is connected to the vehicle's air pump through a pipeline. The air pump can control the air pressure in the chamber by pumping air. When the air pressure in the chamber increases, the chamber volume increases, the piston 53 and piston rod 54 move upward, the damper body 5 becomes longer, and the tailgate opens. When the air pressure in the chamber decreases, the chamber volume decreases, and the piston 53... As the piston rod 54 moves downward, the damper body 5 shortens, and the tailgate closes. As one implementation, a sliding sleeve is installed between the plug 55 and the piston rod 54 to reduce the resistance to the piston rod 54's movement and to reduce wear between the piston rod 54 and the plug 55. A buffer pad is installed on the lower side of the plug 55 to reduce the impact of the piston 53 on the plug 55. Additionally, a sound-absorbing plate can be installed in the vent to reduce noise from gas entering and exiting the upper part of the cylinder 52. A dustproof mechanism can be installed on the vent to prevent external dust from entering the cylinder 52.

[0060] As a specific implementation, the damper belongs to the category of arbitrarily stopping dampers, such as... Figures 2 to 5As shown, it also includes a slider 56, a fixing block 57, a first one-way valve 58, and a second one-way valve 59. The fixing block 57 and the slider 56 are arranged vertically in the chamber, dividing the chamber into a first space, a second space, and a third space from top to bottom. The first space and the second space are filled with oil, and the third space is filled with air. The fixing block 57 is fixed in the chamber, and a first oil passage 571 and a second oil passage 572 are arranged vertically through the fixing block 57. The first one-way valve 58 is located in the first oil passage 571, allowing the oil in the first space to flow downwards into the second space only through the first oil passage 571 and the first one-way valve 58. The second one-way valve 59 is located in the second oil passage 572. In channel 572, the oil in the second space can only flow upward into the first space through the second oil channel 572 and the second check valve 59. The first check valve 58 and the second check valve 59 can be purchased commercially and can be a valve plate check valve, a ball valve, or other types of check valves. Initially, the first check valve 58 and the second check valve 59 are in the closed state. Only after the pressure difference between the two sides of the first check valve 58 and the second check valve 59 exceeds a certain value will the first check valve 58 and the second check valve 59 open, allowing the oil to pass through them. The slider 56 is sealed and slidably installed in the chamber, and the air pump supplies air to the third space. When air is pumped in, the air pressure in the third space increases. When the air pressure below slider 56 is greater than the oil pressure in the upper second space, slider 56 moves upward. The oil in the second space enters the first space through the second one-way valve 59 and the second oil passage 572, and piston 53 and piston rod 54 move upward. When the air pump draws gas from the third space, the air pressure in the third space is less than the oil pressure in the second space. The oil in the first space enters the second space through the first oil passage 571 and the first one-way valve 58, slider 56 moves downward, and piston 53 and piston rod 54 move downward. When the air pressure in the third space is balanced with the oil pressure in the second space, damper body 5... When the damper body 5 reaches the self-locking state, its length is fixed. When the tailgate is manually turned, such as when the tailgate is closed downwards, the piston 53 squeezes the oil in the first space downwards, increasing the oil pressure in the first space and increasing the pressure difference between the upper and lower sides of the first one-way valve 58. When the pressure difference exceeds a certain value, the first one-way valve 58 opens, and the oil in the first space enters the second space through the first oil passage 571 and the first one-way valve 58. The oil in the second space then pushes the slider 56 downwards. When the hand is released, the oil pressure in the first space decreases and returns to normal. When the pressure difference between the upper and lower sides of the first one-way valve 58 is small, the first one-way valve 58 closes, and the damper body 5 self-locks, achieving the effect of stopping at will.

[0061] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A pipe connection structure characterized by comprising: The device includes a connector, an anti-pull-out buckle, and a first sealing ring. One end of the connector can be installed on the damper body. The connector has a channel that runs through both ends. One end of the channel is connected to the damper body. The end of the channel near the damper body has a first conical surface along its inner circumference. The flared end of the first conical surface faces the damper body. A first limiting surface is provided on the side of the first conical surface near the damper body. The anti-pull-out buckle is located between the first conical surface and the first limiting surface. The anti-pull-out buckle has a notch on one side, forming a C-shaped structure. The anti-pull-out buckle has a step along its inner circumference that allows the insertion of a pipe and prevents the pipe from being pulled out. The inner diameter of the step is smaller than the outer diameter of the pipe. The first sealing ring is installed in the channel, located on the side of the first conical surface away from the damper body.

2. A pipe connection structure according to claim 1, wherein The outer side of the anti-pull buckle has a machined surface to reduce the thickness of the anti-pull buckle at the machined surface.

3. The pipeline connection structure according to claim 1, characterized in that, The anti-pull buckle has a chamfer along its outer periphery on the side closest to the first conical surface, which is parallel to the first conical surface.

4. The pipe connection structure according to claim 1, wherein The damper body is provided with a first mounting hole for installing a connector, and the inner side of the first mounting hole is raised to form the aforementioned first limiting surface.

5. A pipe connection structure according to claim 4, wherein The outer end of the first mounting hole is provided with a first sealing groove along the circumference, and a second conical surface is provided along the first sealing groove. The outer periphery of the connector is provided with a second limiting surface facing the damper body. The connection structure also includes a second sealing ring. The second sealing ring is fitted on the connector and abuts against the second limiting surface. When the connector is installed in the first mounting hole, the second sealing ring is embedded in the first sealing groove, and the second conical surface squeezes the second sealing ring.

6. A pipe connection structure according to claim 4, wherein The connection structure also includes an adapter pipe, one end of which can be installed in a first mounting hole, and the other end of which is provided with a second mounting hole for installing a connector. The inner side of the adapter pipe is raised to form the aforementioned first limiting surface.

7. A pipeline connection structure according to claim 6, characterized in that, A second sealing groove is provided circumferentially at the outer end of the first mounting hole, and a third conical surface is provided along the second sealing groove. When the connector is installed in the second mounting hole, the second sealing ring is embedded in the second sealing groove, and the third conical surface squeezes the second sealing ring.

8. A pipe connection structure according to claim 1, wherein The angle between the joint and the damper body is α, 15°. <a<75°。 9. A damper characterized by, The damper includes the damper body and connecting structure as described in claim 1. The damper body includes a connecting seat, a cylinder, a piston, a piston rod, and a plug. The connecting seat is installed at the lower end of the cylinder. The piston is slidably connected in the cylinder. A chamber is formed between the piston, the cylinder, and the connecting seat. The connecting structure is installed on the connecting seat. A pipeline communicates with the chamber through the connecting structure. The plug is installed at the upper end of the cylinder. The piston rod passes through the plug and is slidably connected to the plug. The lower end of the piston rod is fixedly connected to the piston. An air outlet is provided on the plug.

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