Transmission structure of damping buffer device

Abstract

The transmission structure of the damping buffer device comprises a sleeve, a transmission shaft, a compression spring and a damper, a movable cavity is formed in the sleeve in the axial direction, the movable cavity is matched with the transmission shaft, the transmission shaft is movably arranged in the movable cavity in the axial direction, the two ends of the transmission shaft abut against the compression spring and the damper respectively, and the damper is arranged in the movable cavity. The compression spring and the damper act on the two ends of the transmission shaft respectively, a transverse pin is arranged on the transmission shaft in a penetrating mode in the radial direction, a rotating sleeve is rotationally arranged on the outer wall face of the sleeve and connected with the transverse pin, and the rotating sleeve rotates to drive the transverse pin and the transmission shaft to move in the axial direction. When the rotating sleeve rotates, the compression spring and the damper act on the two ends of the transmission shaft respectively, so that the automatic return and damping buffering functions are achieved, compared with a transmission structure of a traditional shaft core, the production difficulty is low, transmission force conversion from spiral motion to linear motion is more direct, and the damping buffering device is smoother in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of buffers, in particular to a transmission structure of a damping buffer device. Background Art

[0002] Damping buffers are used to consume impact energy. The most common type is hydraulic damping buffers. Its working principle is: when the hydraulic damping buffer is subjected to impact force, the piston in the buffer is pushed to move, and at the same time, the oil in the buffer cavity is squeezed out from the throttle port and enters another cavity. At this time, the friction between the throttle port and the oil and the internal friction between the oil molecules form a damping force on the impact load. This process consumes a lot of kinetic energy and plays a buffering role. However, when the hydraulic damping buffer is subjected to an impact load, due to the built-in oil circuit to achieve a buffering effect, a large oil pressure will be formed locally in the buffer cavity. The structure of the door for adjusting the tightness of the opening and closing is relatively complex and requires good sealing. Not only is the processing technology complicated and the production cost high, but also due to structural limitations, the service life is short, making it difficult to repair and replace important parts.

[0003] On September 19, 2022, the applicant applied for a multi-scenario damping and buffering device structure with announcement number CN218294298U. The damper is installed on the inside of the spring. When the spring energy storage is released instantly, the shaft core is pressed to slide, and the shaft core drives the movable shaft of the damper to move. At this time, the damper offsets part of the spring energy storage, causing the shaft core to slide slowly to realize the buffering function; but the shaft core needs to be processed with limit teeth and tooth grooves inside the tube to realize axial movement, which makes the processing difficult and leads to low production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a transmission structure of a damping and buffering device, which has solved the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission structure of a damping and buffering device, comprising a sleeve, a transmission shaft, a compression spring and a damper, an movable cavity is axially arranged in the sleeve, the movable cavity is adapted to the transmission shaft, the transmission shaft is axially movably arranged in the movable cavity, and the two ends of the transmission shaft are respectively abutted against the compression spring and the damper, so that the compression spring and the damper respectively act on the two ends of the transmission shaft, a cross pin is radially penetrated on the transmission shaft, a rotating sleeve is rotatably arranged on the outer wall surface of the sleeve, the rotating sleeve is connected to the cross pin, and the rotating sleeve drives the cross pin and the transmission shaft to move axially when rotating.

[0006] Furthermore, a rotating part for rotating the rotating sleeve is provided on the sleeve, the rotating part is provided with the movable cavity along the axial direction, the wall surface of the rotating part is provided with a spiral groove, the spiral groove penetrates the movable cavity along the radial direction, the wall surface of the rotating sleeve is provided with a long groove along the axial direction, the cross pin is slidably matched with the spiral groove and the long groove, and the end of the cross pin is slidably matched with the long groove, so that the transmission shaft is driven to move axially when the rotating sleeve rotates.

[0007] Furthermore, the sleeve includes a first sleeve and a second sleeve, the rotating part is provided on one end of the first sleeve, and one end of the rotating part away from the first sleeve is connected to the second sleeve.

[0008] Furthermore, a limit shaft is inserted into the compression spring, and a stop portion is provided at the end of the limit shaft, one end surface of the stop portion abuts against the compression spring, and the other end abuts against the transmission shaft.

[0009] Furthermore, the compression spring is arranged in the second sleeve, one end of the compression spring acts on one end of the transmission shaft, and the other end of the compression spring abuts against the door closing speed adjusting member, and the door closing speed adjusting member is screwed in the second sleeve.

[0010] Furthermore, one end of the damper abuts against one end of the transmission shaft away from the compression spring, and the other end abuts against the damping adjustment member, and the damping adjustment member is threaded in the first sleeve.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: an active cavity is provided in the sleeve, a transmission shaft is axially movably provided in the active cavity, a transmission shaft is adopted to replace the traditional shaft core, and the two ends are respectively abutted against the compression spring and the damper, and only a cross pin needs to be inserted into the transmission shaft, and the rotating sleeve on the outer wall of the sleeve drives the cross pin to move axially when it rotates, and drives the transmission shaft to move axially forward and backward at the same time, and when the rotating sleeve rotates, the compression spring and the damper respectively act on the two ends of the transmission shaft, thereby realizing automatic return and damping and buffering functions. Compared with the transmission structure of the traditional shaft core, not only is the production difficulty low, but the transmission force conversion from spiral to linear motion is more direct, so that the damping and buffering device is smoother during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural diagram of the damping buffer device in the utility model.

[0013] Figure 2 It is a cross-sectional schematic diagram of the damping buffer device in the utility model.

[0014] Figure 3 It is a schematic diagram of the explosion of the damping buffer device in the utility model.

[0015] In the figure: sleeve 10, first sleeve 10a, second sleeve 10b, movable chamber 101, rotating part 102, spiral groove 103, transmission shaft 20, compression spring 30, damper 40, cross pin 50, rotating sleeve 60, long groove 601, limit shaft 70, stop part 701, door closing speed adjustment member 80, damping adjustment member 90. DETAILED DESCRIPTION

[0016] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0017] It should be understood that the various steps described in the method implementation of the present utility model can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present utility model is not limited in this respect.

[0018] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0019] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0020] like Figures 1 to 3The transmission structure of a damping and buffering device shown in the figure comprises a sleeve 10, a transmission shaft 20, a compression spring 30 and a damper 40. An active cavity 101 is axially arranged in the sleeve 10, and the active cavity 101 is adapted to the transmission shaft 20. The transmission shaft 20 is axially arranged in the active cavity 101, and the two ends of the transmission shaft 20 are respectively in contact with the compression spring 30 and the damper 40, so that the compression spring 30 and the damper 40 act on the two ends of the transmission shaft 20 respectively. A transverse pin 50 is radially penetrated on the transmission shaft 20, and a rotating sleeve 60 is rotatably arranged on the outer wall surface of the sleeve 10, and the rotating sleeve 60 is connected to the transverse pin 50. The rotating sleeve 60 drives the cross pin 50 and the transmission shaft 20 to move axially when it rotates. It should be understood that the transmission shaft 20 is used instead of the traditional shaft core, and the two ends are respectively abutted against the compression spring 30 and the damper 40. It is only necessary to insert a cross pin 50 on the transmission shaft 20. The rotating sleeve 60 on the outer wall of the sleeve 10 drives the cross pin 50 to move axially when it rotates, and drives the transmission shaft 20 to move axially back and forth, thereby realizing automatic return and damping and buffering functions. Compared with the transmission structure of the traditional shaft core, it is not only less difficult to produce, but also the conversion of transmission force from spiral to linear motion is more direct, making the damping and buffering device smoother during use.

[0021] The sleeve 10 is provided with a rotating part 102 for rotating the rotating sleeve 60. The rotating part 102 is provided with an active cavity 101 along the axial direction. The wall surface of the rotating part 102 is provided with a spiral groove 103. The spiral groove 103 penetrates the active cavity 101 in the radial direction. The wall surface of the rotating sleeve 60 is provided with a long groove 601 along the axial direction. The cross pin 50 is slidably matched with the spiral groove 103 and the long groove 601. The end of the cross pin 50 is slidably matched with the long groove 601, so that the transmission shaft 20 is driven to move axially when the rotating sleeve 60 rotates.

[0022] The sleeve 10 includes a first sleeve 10a and a second sleeve 10b. A rotating portion 102 is disposed on one end of the first sleeve 10a. An end of the rotating portion 102 away from the first sleeve 10a is connected to the second sleeve 10b.

[0023] A limit shaft 70 is inserted into the compression spring 30 , and a stopper 701 is provided at the end of the limit shaft 70 . One end face of the stopper 701 abuts against the compression spring 30 , and the other end abuts against the transmission shaft 20 , so that force transmission is directly achieved between the compression spring 30 and the transmission shaft 20 .

[0024] The compression spring 30 is arranged in the second sleeve 10b, and one end of the compression spring 30 acts on one end of the transmission shaft 20, and the other end of the compression spring 30 abuts against the closing speed adjusting member 80, and the closing speed adjusting member 80 is screwed in the second sleeve 10b; when the damping buffer device is opened, the rotating sleeve 60 rotates and drives the transmission shaft 20 to move axially forward. When the rotating sleeve 60 reaches the maximum rotation angle, the cross pin 50 cooperates with the limiting part of the rotating part 102, so that the compression spring 30 is always in a compressed energy storage state. When the external force rotates the spiral sleeve, the cross pin 50 is disengaged from the limiting part of the rotating part 102, and the compression spring 30 releases the stored energy and pushes the transmission shaft 20 to move axially backward to achieve automatic return.

[0025] As mentioned above, when the external force rotates the spiral sleeve, it drives the transmission shaft 20 and pushes the transmission shaft 20 to move axially backward. The transmission shaft 20 pushes the piston rod of the damping cylinder to retract inward, so that the rotation speed of the rotating sleeve 60 is limited by the axial movement speed of the transmission shaft 20, thereby achieving the effect of slowly closing the door; in addition, one end of the damper 40 abuts against the end of the transmission shaft 20 away from the compression spring 30, and the other end abuts against the damping adjusting member 90. The damping adjusting member 90 is threadedly connected to the first sleeve 10a. The damping adjusting member 90 is rotated by an Allen wrench to adjust its front and rear position, thereby adjusting the damping buffering force of the damping cylinder, thereby adjusting the damping force of the damping mechanism when it moves relative to the transmission shaft 20.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transmission structure of a damping buffer device, characterized in that: The invention comprises a sleeve (10), a transmission shaft (20), a compression spring (30) and a damper (40); an active cavity (101) is axially arranged in the sleeve (10); the active cavity (101) is adapted to the transmission shaft (20); the transmission shaft (20) is axially arranged in the active cavity (101); two ends of the transmission shaft (20) are respectively in contact with the compression spring (30) and the damper (40), so that the compression spring (30) and the damper (40) respectively exert forces on the two ends of the transmission shaft (20); a transverse pin (50) is radially penetrated on the transmission shaft (20); a rotating sleeve (60) is rotatably arranged on the outer wall surface of the sleeve (10); the rotating sleeve (60) is connected to the transverse pin (50); the rotating sleeve (60) drives the transverse pin (50) and the transmission shaft (20) to move axially when rotating.

2. The transmission structure of a damping and buffering device according to claim 1, characterized in that: The sleeve (10) is provided with a rotating part (102) for rotating the rotating sleeve (60), the rotating part (102) is provided with the movable cavity (101) along the axial direction, the wall surface of the rotating part (102) is provided with a spiral groove (103), the spiral groove (103) penetrates the movable cavity (101) along the radial direction, the wall surface of the rotating sleeve (60) is provided with a long groove (601) along the axial direction, the cross pin (50) is slidably matched with the spiral groove (103) and the long groove (601), and the end of the cross pin (50) is slidably matched with the long groove (601), so that when the rotating sleeve (60) rotates, the transmission shaft (20) is driven to move axially.

3. The transmission structure of the damping and buffering device according to claim 2, characterized in that: The sleeve (10) comprises a first sleeve (10a) and a second sleeve (10b); the rotating portion (102) is provided on one end of the first sleeve (10a); and the end of the rotating portion (102) away from the first sleeve (10a) is connected to the second sleeve (10b).

4. The transmission structure of the damping and buffering device according to claim 1, characterized in that: A limit shaft (70) is inserted into the compression spring (30), and a stopper (701) is provided at the end of the limit shaft (70). One end surface of the stopper (701) abuts against the compression spring (30), and the other end abuts against the transmission shaft (20).

5. The transmission structure of the damping and buffering device according to claim 3, characterized in that: The compression spring (30) is arranged in the second sleeve (10b), one end of the compression spring (30) acts on one end of the transmission shaft (20), the other end of the compression spring (30) abuts against the door closing speed adjusting member (80), and the door closing speed adjusting member (80) is screwed into the second sleeve (10b).

6. The transmission structure of the damping and buffering device according to claim 5, characterized in that: One end of the damper (40) abuts against one end of the transmission shaft (20) away from the compression spring (30), and the other end abuts against a damping adjustment member (90), and the damping adjustment member (90) is threadedly connected in the first sleeve (10a).

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