A connection bracket with buffer self-resetting

Abstract

The present invention discloses a buffer self-resetting connection bracket, which relates to the technical field of vehicle accessories. The connection bracket includes an inner rod, which includes a sleeved section and a first connection section, and the first connection section is used to connect to the lower structure; a buffer sleeve, which includes a second connection section for connecting to the upper structure, a receiving section with a receiving cavity inside, and a valve body connected between the second connection section and the receiving section and communicating with the receiving cavity. The receiving section is sleeved outside the sleeved section of the inner rod, and the valve body is used to slowly discharge the gas in the receiving cavity when the inner rod slides in the outer rod, providing damping for the movement of the inner rod. By providing an inner rod and a buffer sleeve that are sleeved inside and outside, and setting a valve body on the buffer sleeve, when the inner rod slides upward in the direction of the upper structure under the action of an external force, the gas in the receiving cavity can be slowly discharged from the valve body, providing buffering for the movement of the inner rod, thereby avoiding the force load of the inner rod being transmitted to the upper structure and protecting the connection bracket and the upper structure from damage.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle accessories, and particularly to a connecting bracket with buffer self - reset function. Background Art

[0002] The vehicle underbody guard is a guard plate installed at the bottom of the engine. Its main function is to prevent the bottom of the engine from being damaged by being knocked when the vehicle is driving on a bumpy road.

[0003] Currently, when installing the underbody guard, most of them use bolts to connect the underbody guard to the chassis. However, the problem is that when the underbody guard is impacted, the rigid connection of the bolts will transmit the load generated by the impact to the vehicle chassis, causing damage to the chassis, and also causing damage to both the underbody guard and the connecting bolts. Summary of the Invention

[0004] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a connecting bracket with buffer self - reset function to solve the problem that when the underbody guard is impacted in the prior art, the rigid connection of the bolts will directly transmit the load generated by the impact to the vehicle chassis, causing damage to the chassis.

[0005] To achieve the above - mentioned purpose, the technical solution adopted by the present invention is as follows:

[0006] The present application provides a connecting bracket with buffer self - reset function, including:

[0007] An inner rod, which includes a sleeved section and a first connecting section, and the first connecting section is used to connect the lower structure;

[0008] A buffer sleeve, which includes a second connecting section for connecting the upper structure, a receiving section with a receiving cavity inside, and a valve body connected between the second connecting section and the receiving section and communicating with the receiving cavity. The receiving section is sleeved outside the sleeved section of the inner rod, and the valve body is used to slowly discharge the gas in the receiving cavity when the inner rod slides in the buffer sleeve, providing damping for the movement of the inner rod.

[0009] In some optional embodiments, the valve body includes a shell, the shell is hollow inside and one end communicates with the receiving cavity, and through - holes for discharging the gas in the receiving cavity are opened on the side wall of the shell.

[0010] In some optional embodiments, the valve body further includes a film, and the film is partially connected to the shell and is used to partially open the through - holes when the inner rod moves towards the upper - structure direction.

[0011] In some alternative embodiments, the housing is a frustum of a cone with a hollow interior. The large-diameter end of the frustum of the cone communicates with the receiving cavity, the small-diameter end of the frustum of the cone is connected to the second connecting section, and a trapezoidal through hole is formed in each side wall of the frustum of the cone.

[0012] In some alternative embodiments, a receiving groove adapted to the size of the film is formed in each side wall of the frustum of the cone, and the through hole is formed in the bottom wall of the receiving groove for the film to be located in the receiving groove when the film closes the through hole.

[0013] In some alternative embodiments, at least one of the films is provided with a ventilation hole communicating with the receiving cavity, so that when the inner rod moves away from the buffer sleeve and the film closes the through hole, external gas can slowly enter the receiving cavity to provide damping for the movement of the inner rod.

[0014] In some alternative embodiments, the receiving cavity is in the shape of a stepped hole, including a first large-diameter end and a first small-diameter end that communicate with each other. The sleeved section of the inner rod includes a second large-diameter end and a second small-diameter end. The second large-diameter end is sleeved inside the first large-diameter end, and the second small-diameter end is sleeved inside the first small-diameter end.

[0015] In some alternative embodiments, a sealing ring is provided circumferentially on the second large-diameter end and abuts against the inner wall of the first large-diameter end.

[0016] In some alternative embodiments, an annular limiting groove for clamping the sealing ring is provided at the connection between the first large-diameter end and the second large-diameter end.

[0017] In some alternative embodiments, a clamping groove for placing the sealing ring is formed circumferentially on the side wall of the large-diameter end.

[0018] Compared with the prior art, the advantages of the present invention are as follows: By providing an inner rod and a buffer sleeve sleeved inside and outside, and a valve body is provided on the buffer sleeve, so that when the inner rod slides under the action of an external force in the direction of the upper structure, the gas in the receiving cavity can slowly discharge from the valve body to provide buffering for the movement of the inner rod, thereby preventing the force load of the inner rod from being transmitted to the upper structure and protecting the connection bracket and the upper structure from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1Schematic structural diagram of a buffer self-resetting connection bracket of the present invention;

[0021] Figure 2 is Figure 1 perspective schematic diagram of;

[0022] Figure 3 is Figure 1 cross-sectional schematic diagram of;

[0023] Figure 4 is Figure 1 explosion schematic diagram of.

[0024] In the figure: 1, inner rod; 11, sleeved section; 12, first connection section; 13, sealing ring; 14, card slot; 2, buffer sleeve; 21, second connection section; 22, receiving section; 23, valve body; 231, housing; 232, through hole; 233, film; 234, receiving groove; 235, ventilation hole; 24, annular limiting groove. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0026] The following further elaborates on the embodiments of the present invention with reference to the accompanying drawings.

[0027] As Figure 1 shown, the present application provides a connection bracket with buffer self-resetting, including an inner rod 1 and a buffer sleeve 2 respectively used for connecting the lower structure and the upper structure. The buffer sleeve 2 is sleeved outside the inner rod 1 to form a telescopic structure, and the inner rod 1 has damping when moving in the buffer sleeve 2, so as to buffer the impact received by the lower structure and protect the upper structure.

[0028] Specifically, the inner rod 1 includes a sleeved section 11 and a first connection section 12, and the first connection section 12 is used to connect the lower structure; the buffer sleeve 2 includes a second connection section 21 for connecting the upper structure, a receiving section 22 with a receiving cavity inside, and a valve body 23 connected between the second connection section 21 and the receiving section 22 and communicating with the receiving cavity. The receiving section 22 is sleeved outside the sleeved section 11 of the inner rod 1, and the valve body 23 is used to slowly discharge the gas in the receiving cavity when the inner rod 1 slides in the buffer sleeve 2, providing damping for the movement of the inner rod 1.

[0029] Taking the underbody guard and chassis of a vehicle as an example, the second connection section 21 of the buffer sleeve 2 is connected to the chassis, and the first connection section 12 of the inner rod 1 is connected to the underbody guard. When the vehicle travels on a bumpy road section, the underbody guard is hit and pushed upwards. At this time, the inner rod 1 slides in the receiving section 22 of the buffer sleeve 2, and the gas in the receiving chamber is slowly discharged from the valve body 23, thereby buffering the external force on the underbody guard and protecting the chassis.

[0030] Of course, the length of the receiving section 22 and the exhaust rate of the valve body 23 can be determined according to the different design requirements of the vehicle. Since the receiving section 22 is needed to provide a buffer for the inner rod 1, when the above-mentioned connecting bracket is installed between the chassis and the bottom guard plate, compared with the traditional rigid connection by bolts, the height of the bottom guard plate from the ground will inevitably be reduced. However, it should be noted that in some optional embodiments, a position sensing device can be installed on the connecting bracket to remind the driver that there is an obstacle on the road when the inner rod 1 moves upward to the set position of the receiving section 22. In this way, during the driving process of the vehicle, the driver can be given a reaction time to avoid obstacles, and prevent the inner rod 1 from being completely located in the receiving cavity to form a rigid connection, and the obstacles from causing damage to the chassis. It can be seen that the use of the above-mentioned connecting bracket to install the bottom guard plate on the chassis can reduce the damage to the chassis caused by obstacles raised on the road surface.

[0031] In some optional embodiments, the valve body 23 is a membrane body with elastic restoring force arranged on the receiving section 22, and a vent hole connected to the receiving chamber is opened on the membrane body. When the inner rod 1 moves upward in the receiving chamber, the gas in the receiving chamber is squeezed, so that the membrane body is stretched open, and the vent hole is opened, so that the gas in the receiving chamber is discharged from the vent hole. It should be noted that the diameter of the vent hole after it is opened due to the membrane body being stretched open should be smaller than the diameter of the receiving chamber, so that the gas in the receiving chamber can be discharged slowly.

[0032] In some optional embodiments, the valve body 23 includes a shell 231 , which is hollow inside and communicates with the receiving cavity at one end, and a through hole 232 is formed on the side wall of the shell 231 for discharging gas in the receiving cavity.

[0033] In this embodiment, if the shell is made of non-elastic material, the diameter of the through hole 232 should be set to be smaller than the diameter of the accommodating cavity, so that when the gas in the accommodating cavity is squeezed out by the inner rod 1, a negative pressure can be generated to provide a downward buffering force for the inner rod 1.

[0034] In some optional embodiments, the valve body 23 further includes a film 233, which is partially connected to the shell 231, and is used for partially opening the through hole 232 when the inner rod 1 moves toward the upper structure.

[0035] It can be understood that to prevent the through hole 232 from being too large and resulting in no downward buffering force on the inner rod 1 when the gas in the accommodating cavity is discharged, a film 233 is provided on the housing 231 to cover the through hole 232. When the gas in the accommodating cavity is squeezed by the inner rod and discharged from the through hole 232, the film 233 needs to be lifted to connect the through hole 232 with the outside. Therefore, the film 233 also provides resistance to the discharge of the gas in the accommodating cavity, thereby providing a downward damping force for the inner rod 1.

[0036] Optionally, the film 233 is hinged to the housing 231 and connected to the housing 231 through a torsion spring, so that the film 233 approaches and fits against the housing 231 to close the through hole 232. When the gas in the accommodating cavity is discharged from the through hole 232, the gas pushes open the film 233 and discharges outward. At this time, the film 233 generates an elastic restoring force to approach the housing 231 due to the torsion spring. When the inner rod 1 no longer moves upward, the gas discharge in the accommodating cavity stops, and the film 233 returns to its initial state under the action of the elastic restoring force of the torsion spring to close the through hole 232.

[0037] In this example, the film 233 is a component made of a material with elastic restoring force. Part of the film 233 is connected to the housing 231. When the gas in the accommodating cavity is discharged from the through hole 232, the film 233 bends and deforms due to air pressure, causing the through hole 232 to open partially. The degree of bending deformation of the film 233 changes according to the air pressure generated by the discharged gas in the accommodating cavity. When the upward impulse received by the inner rod 1 is large, the gas pressure in the accommodating cavity increases accordingly, causing a large degree of bending deformation of the film 233 when it is lifted; when the upward impulse received by the inner rod 1 is small, the change in the gas pressure in the accommodating cavity is small, and the degree of bending deformation of the film 233 when it is lifted is small. Thus, it can be seen that the film 233 can provide a stable and uniform damping force for the inner rod 1.

[0038] In some alternative embodiments, as Figure 2 and Figure 3 shown, the above-mentioned housing 231 is a hollow frustum of a cone, the large-diameter end of the frustum of the cone is communicated with the above-mentioned accommodating cavity, the small-diameter end of the frustum of the cone is connected to the second connecting section 21, and each side wall of the frustum of the cone is provided with the above-mentioned trapezoidal through hole 232.

[0039] It can be understood that in this example, the housing 231 is set as a frustum of a cone, and the large-diameter end of the frustum of the cone is communicated with the accommodating cavity, so that when the film 233 is attached to the side wall of the frustum of the cone, the included angle with the axis of the accommodating section 22 can be kept acute. The purpose of such a setting is that when the film 233 generates bending deformation and no longer undergoes external force extrusion and deformation to return to its initial state, the film 233 can better return to its initial state under the action of gravity and can better close the through hole 232.

[0040] Preferably, the bottom wall of the frustum connected to the receiving section 22 forms a 90° angle with the side wall of the frustum. Compared with setting the bottom wall of the frustum connected to the receiving section 22 to form an acute angle with the side wall of the frustum, it is possible to avoid the frictional force generated when the inner rod 1 slides up and down in the receiving cavity, resulting in stress concentration at the connection between the frustum and the receiving section 22.

[0041] In this example, the end of the film 233 close to the second connecting section 21 is connected to the housing 231 to better assist in increasing the elastic restoring force through the action of gravity.

[0042] In some alternative embodiments, a receiving groove 234 adapted to the size of the film 233 is provided on each side wall of the frustum, and the through hole is provided on the bottom wall of the receiving groove 234 for the film 233 to be located in the receiving groove 234 when the film 233 closes the through hole 232.

[0043] In order to enable the film 233 to better fit on the side wall of the housing 231 when the inner rod 1 does not have relative displacement with the buffer sleeve 2, a receiving groove 234 is provided on the side wall of the housing 231. The end of the film 233 close to the second connecting section 21 is connected to the bottom wall of the receiving groove 234. When the film 233 closes the through hole 232, the film 233 is located in the receiving groove 234 and abuts against the bottom wall of the receiving groove 234; when the film 233 is pushed open, the end close to the large diameter end of the frustum is separated from the bottom wall of the receiving groove 234, so that the through hole 232 communicates with the outside.

[0044] In some alternative embodiments, at least one of the films 233 is provided with a vent hole 235 communicating with the receiving cavity for allowing external gas to slowly enter the receiving cavity when the inner rod 1 moves away from the buffer sleeve 2 and the film closes the through hole 232, providing damping for the movement of the inner rod 1.

[0045] When the external force of the lower structure is withdrawn and the inner rod 1 no longer moves upward, in order to enable the connecting bracket to be reused and prepare for the next collision, it is necessary to move the inner rod 1 downward to return to its initial position when not under force. In this embodiment, a vent hole 235 is provided in the film 233, and due to the self-weight of the lower structure and the inner rod 1, the inner rod 1 can move downward relative to the buffer sleeve 2 after the external force is withdrawn, and the external gas re-enters the receiving cavity through the vent hole 235.

[0046] It can be understood that when the inner rod 1 no longer moves upward relative to the buffer sleeve 2, the pressure inside and outside the receiving cavity is balanced at this time, and the film 233 returns to its initial state and closes the through hole 232. Therefore, a vent hole 235 is provided in the film 233, and by using the self-weight of the lower structure and the inner rod 1, the inner rod 1 automatically moves downward to return to its initial position.

[0047] It should be noted that in this example, the above connecting bracket is used to be installed between the underbody panel and the chassis of a vehicle. Therefore, the lower structure is the underbody panel, and it must be located below the chassis. Thus, the gravity of the underbody panel can drive the inner rod 1 to move downward to automatically return to the initial position, without the need for other external forces to make the inner rod 1 return to the initial position. In other usage environments, the above connecting bracket can also be used between two structures that need to move slowly away from or close to each other. Those skilled in the art can install and use the connecting bracket according to the usage environment, not limited to the structural connection of the up-and-down position relationship, or only relying on gravity to make the inner rod 1 return to the initial position. For example, it can be installed between a sliding door frame and a door panel to achieve a damping effect when opening and closing the door.

[0048] In order to enable the inner rod 1 to fall slowly and avoid the impact caused by the impulse generated by the rapid fall on the upper structure, it is necessary to control the size of the ventilation hole 235. In this example, the ventilation hole 235 is much smaller than the size of the through hole 232. In other embodiments, those skilled in the art can control the size of the ventilation hole 235 according to the rate at which the inner rod 1 needs to fall, which will not be elaborated here.

[0049] In some alternative embodiments, the above receiving cavity is in the shape of a stepped hole, including a first large-diameter end and a first small-diameter end that are interconnected. The sleeved section 11 of the above inner rod 1 includes a second large-diameter end and a second small-diameter end. The second large-diameter end is sleeved inside the first large-diameter end, and the second small-diameter end is sleeved inside the first small-diameter end.

[0050] It can be understood that by setting the receiving cavity in the shape of a stepped hole, the inner rod 1 can be hung on the buffer sleeve 2. Since the first connecting section 12 of the inner rod 1 is used to connect the lower structure, it is necessary to ensure the stability of the connection between the inner rod 1 and the buffer sleeve 2 when there is no external force on the lower structure and the upper structure. In this example, a sliding hole for the second small-diameter end of the inner rod 1 to slide is provided near the bottom of the receiving section 22 close to the lower structure. The inner diameter of the sliding hole is smaller than the inner diameter of the receiving section 22 for the second large-diameter end of the inner rod 1 to slide, so that the receiving cavity is in the shape of a stepped hole, enabling the second large-diameter end of the inner rod 1 to be hung at the bending part where the first large-diameter end and the first small-diameter end transition, preventing the inner rod 1 from slipping out of the receiving cavity.

[0051] In some alternative embodiments, a sealing ring 13 that abuts against the inner wall of the first large-diameter end is provided circumferentially on the second large-diameter end.

[0052] In order to increase the friction force when the inner rod 1 moves in the receiving cavity and also enable the gas in the receiving cavity to be completely discharged from the valve body 23, a sealing ring 13 is provided at the second large-diameter end of the inner rod 1.

[0053] Optionally, the sealing ring 13 is made of an elastic material such as silica gel to increase the frictional force and sealing performance, and further increase the damping when the inner rod 1 moves in the receiving cavity.

[0054] In some alternative embodiments, an annular limiting groove 24 for clamping the sealing ring 13 is provided at the connection between the first large-diameter end and the second large-diameter end.

[0055] When the connecting bracket is used to connect between the vehicle underbody panel and the chassis, due to the change in the center of gravity of the vehicle during driving, the underbody panel will push the inner rod 1 to slide up and down in the receiving cavity under the action of inertia, resulting in abnormal noise or affecting the buffering and protection of the underbody panel on the chassis when encountering road obstacles. Therefore, in this example, an annular limiting groove 24 is provided on the inner wall of the receiving cavity for the sealing ring 13 on the inner rod 1 to be clamped in the annular limiting groove 24, thereby limiting the relative position between the inner rod 1 and the buffer sleeve 2 and preventing the inner rod 1 from driving the underbody panel to shake up and down during vehicle driving.

[0056] Of course, it should be noted that the sealing ring 13 here needs to be made of a flexible and resilient material, such as silica gel. Thus, when the inner rod 1 is subjected to a sufficiently large upward external force, the sealing ring 13 undergoes elastic deformation and moves out of the annular limiting groove 24, and the inner rod 1 can move in the receiving cavity. After the external force is withdrawn, the inner rod 1 moves downward under the self-weight of the underbody panel until the sealing ring 13 moves into the annular limiting groove 24 and returns to its initial state.

[0057] In other embodiments, when the connecting bracket is not used to connect between the underbody panel and the chassis, the clamping of the annular limiting groove 24 and the sealing ring 13 can be used to control the movement range of the inner rod 1 relative to the buffer sleeve 2.

[0058] Thus, it can be seen that the force threshold when the inner rod 1 undergoes relative displacement relative to the buffer sleeve 2 can be controlled by adjusting the groove depth of the annular limiting groove 24 along the radial direction of the receiving cavity.

[0059] In some alternative embodiments, a card slot 14 for placing the sealing ring 13 is circumferentially provided on the side wall of the large-diameter end.

[0060] To stably fix the sealing ring 13 on the inner rod 1 and prevent the sealing ring 13 from displacing relative to the inner rod 1 due to large frictional force when the inner rod 1 moves in the receiving cavity, a card slot 14 for placing the sealing ring 13 is circumferentially provided on the side wall of the large-diameter end of the inner rod 1. Preferably, the radial cross-section of the sealing ring 13 is circular, and the card slot 14 is semi-circular. Thus, when the sealing ring 13 is clamped in the card slot 14, it can partially protrude from the card slot 14 and abut against the inner wall of the receiving cavity.

[0061] In other embodiments, the sealing ring 13 can also be fixed by bonding. In this example, the clamping groove 14 is used for clamping and cooperating with the sealing ring 13, which is convenient for replacing the sealing ring 13 when it ages and fails.

[0062] In some alternative embodiments, a threaded hole is provided at the end of the first connecting section 12 away from the sleeved section 11 for connecting to the lower structure through a bolt; a threaded hole is provided at the end of the second connecting section 21 away from the receiving section 22 for connecting to the upper structure through a bolt.

[0063] In some alternative embodiments, for the convenience of installing the inner rod 1 and the buffer sleeve 2, the sleeved section 11 and the first connecting section 12 of the inner rod 1 are clamped, and the second connecting section 21 of the buffer sleeve 2 is integrally formed with the valve body 23 and is clamped with the receiving section 22.

[0064] Specifically, as Figure 4 shown, when installing the above-mentioned connection bracket with buffer self-resetting, first bond the four films 233 to the bottom wall of the receiving groove 234 near the end of the second connecting section 21. After the sealing ring 13 is clamped in the clamping groove 14, put the sleeved section 11 into the receiving cavity from the opening where the receiving section 22 is clamped with the valve body 23, and connect it to the first connecting section 12 through the sliding hole of the receiving section 22, and then connect the large-diameter end of the valve body 23 to the opening end of the receiving section 22.

[0065] The working principle of the embodiment of the present application is as follows: Connect the first connecting section 12 to the lower structure, and connect the second connecting section 21 of the buffer sleeve 2 to the upper structure. When an upward external force acts on the lower structure, the inner rod 1 is pushed to move in the receiving cavity. At this time, the air pressure in the receiving cavity is greater than the air pressure outside the receiving cavity, and the film 233 generates a bending deformation due to the air pressure difference, so that the through hole 232 is partially opened, and the gas slowly discharges from the through hole 232, thereby providing a downward damping force for the lower structure; when the external force acting on the lower structure is withdrawn, at this time, under the action of the gravity of the lower structure, the inner rod 1 moves downward, the air pressure in the receiving cavity is less than the air pressure outside the receiving cavity, the film 233 returns to the initial state and adheres to the bottom wall of the receiving groove 234. At this time, through the air holes 235 on the film 233, the external gas slowly enters the receiving cavity, and the inner rod 1 slowly moves down until the sealing ring 13 is clamped in the annular limiting groove 24 to prepare for the next movement of the inner rod 1.

[0066] A buffer self-resetting connection bracket of the present invention provides damping for the movement of the inner rod by slowly discharging the gas in the receiving cavity through the setting of the valve body, thereby buffering the external force received by the bottom guard plate and protecting the chassis; by setting the film, when the inner rod moves upward, it needs to overcome the elastic deformation force of the film to partially open the through hole, and the gas in the receiving cavity can be slowly discharged, so as to provide stable and uniform damping for the inner rod; by setting the housing as a frustum of a cone, when the film generates a bending deformation and no longer undergoes external force extrusion deformation to return to the initial state, the film can better return to the initial state under the action of gravity and better close the through hole; by setting a receiving groove adapted to the size of the film and used for placing the film, the film can better fit on the side wall of the housing; by setting a vent hole, when the film closes the through hole, the external gas slowly enters the receiving cavity to provide damping for the downward movement of the inner rod to achieve the self-resetting of the inner rod relative to the buffer sleeve; by setting the receiving cavity as a stepped hole, the inner rod can be hung on the buffer sleeve to prevent the inner rod from disengaging from the buffer sleeve and improve the connection stability between the upper structure and the lower structure; by setting a sealing ring, the damping between the inner rod and the buffer sleeve is improved; the sealing ring on the inner rod can be clamped in the annular limiting groove to limit the relative position between the inner rod and the buffer sleeve and prevent the inner rod from driving the bottom guard plate to shake up and down during vehicle driving.

[0067] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0068] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0069] The above are only specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to these embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A connecting bracket with buffer self-resetting, characterized in that, Comprising: An inner rod (1), which includes a sleeved section (11) and a first connection section (12), and the first connection section (12) is used to connect to the lower structure; A buffer sleeve (2), which includes a second connection section (21) for connecting to the upper structure, a receiving section (22) with a receiving cavity inside, and a valve body (23) connected between the second connection section (21) and the receiving section (22) and communicating with the receiving cavity. The receiving section (22) is sleeved outside the sleeved section (11) of the inner rod (1), and the valve body (23) is used to slowly discharge the gas in the receiving cavity when the inner rod (1) slides in the buffer sleeve (2), so as to provide damping for the movement of the inner rod (1); The valve body (23) includes a housing (231), the housing (231) is hollow inside and one end communicates with the receiving cavity, and a through hole (232) for discharging the gas in the receiving cavity is opened on the side wall of the housing (231); The valve body (23) further includes a film (233), and the film (233) is partially connected to the housing (231), and is used to partially open the through hole (232) when the inner rod (1) moves towards the upper structure; At least one of the films (233) is provided with a ventilation hole (235) communicating with the receiving cavity, and is used to slowly introduce external gas into the receiving cavity when the inner rod (1) moves away from the buffer sleeve (2) and the film closes the through hole (232), so as to provide damping for the movement of the inner rod (1); When an upward external force acts on the lower structure, the inner rod (1) is pushed to move in the receiving cavity. The air pressure in the receiving cavity is greater than the air pressure outside the receiving cavity. The film (233) bends and deforms due to the air pressure difference, so that the through hole (232) is partially opened, and the gas slowly discharges from the through hole (232) to provide downward damping for the lower structure. When the external force acting on the lower structure is withdrawn, under the action of the gravity of the lower structure, the inner rod (1) moves downward. The air pressure in the receiving cavity is less than the air pressure outside the receiving cavity, and the film (233) returns to its initial state. Through the ventilation hole (235) on the film (233), the external gas slowly enters the receiving cavity.

2. The connecting bracket with buffer self-resetting according to claim 1, characterized in that The housing (231) is a hollow frustum of a cone inside, the large diameter end of the frustum of the cone communicates with the receiving cavity, the small diameter end of the frustum of the cone is connected to the second connection section (21), and a trapezoidal through hole (232) is opened on each side wall of the frustum of the cone.

3. The connecting bracket with buffer self-resetting according to claim 2, characterized in that A receiving groove (234) adapted to the size of the film (233) is opened on each side wall of the frustum of the cone, and the through hole is opened on the bottom wall of the receiving groove (234), and is used for the film (233) to be located in the receiving groove (234) when the film (233) closes the through hole (232).

4. The connection bracket with buffer self-resetting according to claim 1, characterized in that, The receiving cavity is in the shape of a stepped hole, including a first large-diameter end and a first small-diameter end that are interconnected. The sleeved section (11) of the inner rod (1) includes a second large-diameter end and a second small-diameter end. The second large-diameter end is sleeved inside the first large-diameter end, and the second small-diameter end is sleeved inside the first small-diameter end.

5. The connecting bracket with buffer self-resetting according to claim 4, characterized in that, A sealing ring (13) that abuts against the inner wall of the first large-diameter end is provided circumferentially on the second large-diameter end.

6. The connecting bracket with buffer self-resetting as described in claim 5, characterized in that, An annular limiting groove (24) that is snap-connected to the sealing ring (13) is provided at the connection between the first large-diameter end and the second large-diameter end.

7. The connecting bracket with buffer self-resetting according to claim 5, characterized in that, A clamping groove (14) for placing the sealing ring (13) is circumferentially formed on the side wall of the large-diameter end.

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