DE202022100392U1 - Damping buffer structure with linear motion transitioning to rotary motion - Google Patents

Abstract

A linear motion converted to rotary motion damping buffer structure, characterized by comprising a shaft core (3), a first rotary shaft sleeve (4) and a second rotary shaft sleeve (5), the outer wall surface of the shaft core (3) being provided with a spiral groove (31). , wherein the wall surface of the first rotary shaft sleeve (4) is provided with a round hole (41), a steel ball (42) being arranged in the round hole (41), the steel ball (42) being slidably fitted with the spiral groove (31) to driving the shaft core (3) to move up and down as the first rotary shaft sleeve (4) rotates, the second rotary shaft sleeve (5) being movably fitted on the wall surface of the first rotary shaft sleeve (4) outside the round hole (41), the internal toothing on the inside wall of the second rotary shaft sleeve (5) being connected in a matching manner with the external toothing on the end of the shaft core (3).

Description

technical field

The utility model relates to the technical field of buffers, in particular to a damping buffer structure with a linear movement that changes into a rotary movement.

background technique

Dampening buffers are used to dissipate impact energy. The most common are hydraulic damping buffers. Its principle of operation is: when the hydraulic damping buffer is hit, it pushes the piston in the buffer in motion, pushing the oil in the buffer cavity out of the opening and into another cavity. At this time, the friction between the orifice 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 acts as a buffer. However, when the hydraulic damping buffer is subjected to an impact load, a large oil pressure is locally formed in the buffer cavity due to the built-in oil passage to achieve the damping effect. The structure of adjusting the degree of tightness, opening and closing the door is complex, so it needs to be sealed. It not only has complex processing technology and high production costs, but also has a short service life due to structural limitations, making it difficult to repair and replace important parts.

Content of the utility model

The utility model aims to provide a rotary-to-linear motion damping buffer structure, thereby solving the problems proposed in the above background art.

In order to achieve the above purpose, the utility model provides the following technical solution: a rotary-linear motion damping buffer structure comprising a shaft core, a first rotary shaft sleeve and a second rotary shaft sleeve, the outer wall surface of the shaft core being provided with a spiral groove, wherein the wall surface of the first rotary shaft sleeve is provided with a round hole, wherein a steel ball is arranged in the round hole, wherein the steel ball is slidably matched with the spiral groove to drive the shaft core to move up and down when the first rotary shaft sleeve rotates, wherein the second rotary shaft sleeve is fitted movably on the wall surface of the first rotary shaft sleeve outside the round hole, the internal teeth on the inner wall of the second rotary shaft sleeve being matingly connected with the external teeth on the end of the shaft core.

Preferably, it further includes a first sleeve, a second sleeve, a shaft core, a first rotary shaft sleeve, a second rotary shaft sleeve, a compression spring and a damper, the inner walls of the first sleeve and the second sleeve being provided with internal serrations, with one end of the shaft core in the first rotary shaft sleeve is inserted, the outer wall surface of the first rotary shaft sleeve being provided with external teeth mating with the first sleeve, the outer wall surface of the second rotary shaft sleeve being provided with external teeth mating with the second sleeve, the compression spring and the damper can be used to provide a damping effect when the shaft core moves up and down.

Preferably, the compression spring is disposed in the second sleeve, with one end of the compression spring being in contact with the shaft core, the other end of the compression spring being in contact with a first adjustment mechanism for adjusting the rotational force of the first rotating shaft sleeve, the damper on one of the Compression spring remote end of the shaft core is installed, with the protruding end of the damper being in contact with the shaft core, with the other end of the damper being in contact with a second adjusting mechanism for adjusting the damping force of the damper.

A sliding bearing is preferably arranged between the first sleeve and the second sleeve, the sliding bearing being placed on the first rotary shaft sleeve.

Preferably, the first adjustment mechanism comprises a first nut and a first adjustment screw, the first nut being installed at the end of the second sleeve remote from the first sleeve, the first adjusting screw being screwed via threads in the second sleeve, the first adjusting screw having a end of the compression spring is in contact.

Preferably, the second adjustment mechanism comprises a second nut and a second adjustment screw, the second nut being installed at the end of the first sleeve remote from the second sleeve, the second adjustment screw being screwed via threads in the second nut, the second adjustment screw having a end of the damper is in contact.

The utility model has the following advantageous effects over the prior art: The steel ball is installed in the round hole on the outer wall of the shaft sleeve and is slidably matched with the spiral groove on the shaft core. When the shaft sleeve is rotated, the steel ball slides on the spiral groove to drive the shaft core to move up and down to realize the conversion from linear motion to rotary motion. The second rotary shaft sleeve is used to press the steel ball, which can also serve as the guide of the shaft core to extend the life of the buffer. The key structure is adopted between the first sleeve, the second sleeve, the shaft core, the first rotary shaft sleeve and the second rotary shaft sleeve, which makes the connection structure between the shaft sleeve and the sleeve more stable, and has the following advantages: convenient assembly, disassembly and maintenance, and simple processing.

character list

• 1 Fig. 13 is a three-dimensional schematic diagram of the present utility model.
• 2 Fig. 12 is a plan view of the present utility model.
• 3 is a schematic cross-sectional view of AA in 2 .
• 4 is the exploded diagram of the present utility model.

Specific embodiment

The technical solution in the embodiment of the present utility model will be described clearly and fully below in combination with the attached figures in the embodiment of the utility model. Obviously, the embodiment described is only a part of the embodiments of the present utility model, not all of the embodiments. Starting from the embodiment of the present utility model, all other embodiments obtained by ordinary technicians in the field without creative work belong to the scope of the present utility model.

As in 1 until 4 1, a rotary motion-to-linear motion damping buffer structure comprises a shaft core 3, a first rotary shaft sleeve 4, and a second rotary shaft sleeve 5, the outer wall surface of the shaft core 3 being provided with a spiral groove 31, and the wall surface of the first rotary shaft sleeve 4 being provided with a round hole 41 with a steel ball 42 placed in the round hole 41, the steel ball 42 being slidably matched with the spiral groove 31 to drive the shaft core 3 to move up and down as the first rotary shaft sleeve 4 rotates, the second rotary shaft sleeve 5 movably fitted on the wall surface of the first rotating shaft sleeve 4 outside the round hole 41, and the internal teeth on the inner wall of the second rotating shaft sleeve 5 are matingly connected to the external teeth on the end of the shaft core 3.

In this embodiment, it further comprises a first sleeve 1, a second sleeve 2, a shaft core 3, a first rotary shaft sleeve 4, a second rotary shaft sleeve 5, a compression spring 6 and a damper 7, wherein the inner walls of the first sleeve 1 and the second sleeve 2 are provided with internal splines, one end of the shaft core 3 is inserted into the first rotary shaft sleeve 4, the outer wall surface of the first rotary shaft sleeve 4 is provided with external splines which are adapted to the first sleeve 1, the outer wall surface of the second rotary shaft sleeve 5 with is provided with external teeth fitted to the second sleeve 2, using the compression spring 6 and the damper 7 to provide a damping effect when the shaft core 3 moves up and down.

In this embodiment, the compression spring 6 is disposed in the second sleeve 2, with one end of the compression spring 6 being in contact with the shaft core 3, and the other end of the compression spring 6 being in contact with a first adjustment mechanism for adjusting the rotational force of the first rotary shaft sleeve 4 , wherein the damper 7 is installed at an end of the shaft core 3 remote from the compression spring 6, the protruding end of the damper 7 is in contact with the shaft core 3, the other end of the damper 7 is in contact with a second adjusting mechanism for adjusting the Damping force of the damper 7 is. When the first rotary shaft sleeve 4 is rotated, the steel ball 42 slides on the spiral groove 31 to drive the shaft core 3 to move up and down to realize the conversion from linear motion to rotary motion. The compression spring 6 acts as a compression energy accumulator, with one end of the compression spring 6 being in contact with the shaft core 3 and the other end of the compression spring 6 being in contact with the first adjustment mechanism. During the opening and closing process, the shaft core 3 can be pushed back and the damping effect for the slow retraction of the shaft core 3 can be generated with the damper 7 .

In this embodiment, a sliding bearing 10 is arranged between the first sleeve 1 and the second sleeve 2 , the sliding bearing 10 being placed on the first rotary shaft sleeve 4 .

In this embodiment, the first adjusting mechanism comprises a first nut 81 and a first adjusting screw 82, the first nut 81 being installed at the end of the second sleeve 2 remote from the first sleeve 1, the first adjusting screw 82 being threaded in the second sleeve 2 is screwed, the first adjusting screw 82 being in contact with one end of the compression spring 6 . By turning the first adjusting screw 82, the force when rotating the shaft core 3 can be adjusted.

In this embodiment, the second adjustment mechanism comprises a second nut 91 and a second adjustment screw 92, the second nut 91 being installed at the end of the first sleeve 1 remote from the second sleeve 2, the second adjustment screw 92 being threaded in the second nut 91 is screwed with the second adjusting screw 92 being in contact with one end of the damper 7 . Not only can one section or two sections of the damping force of the damper 7 be adjusted by turning the second adjusting screw 92, but also the second nut 91 can be unscrewed to take out the damper 7, which is convenient to replace the damper 7, and is conducive to subsequent disassembly and maintenance.

The working principle and application process of the present utility model: By installing the steel ball 42 into the round hole 41 on the outer wall of the shaft sleeve, it slides and mates with the spiral groove 31 on the shaft core 3. When the shaft sleeve is rotated, the steel ball 42 slides on the spiral groove 31 to drive the shaft core 3 to move up and down to realize the conversion from linear motion to rotary motion. The second rotary shaft sleeve 5 is for pressing the steel ball 42, which can also serve as a guide for the shaft core 3 to extend the life of the buffer. The spline structure is adopted between the first sleeve 1, the second sleeve 2, the shaft core 3, the first rotary shaft sleeve 4 and the second rotary shaft sleeve 5, which makes the connection structure between the shaft sleeve and the sleeve more stable, and has the following advantages: convenient assembly, disassembly and Maintenance and easy processing.

During use, when the first sleeve 1 and the second sleeve 2 rotate relative to each other, the compression spring 6 can be twisted to store the elastic potential energy until the steel ball 42 mates with the limiting part at the upper end of the spiral groove 31 and in is clamped to the limiting part to fix the angle of the buffer. The force of the compression spring 6 is not sufficient to pull back the ball 42 so that the buffer stops at the specified opening angle. When the buffer rotates under external force, the steel ball 42 retreats to the normal trajectory of the spiral groove 31. The first sleeve 1 and the second sleeve 2 are closed under the action of the compression spring 6, and the buffer is slowly closed by the damping action of the damper 7.

Although the embodiment of the present utility model has been shown and described, it should be understood by those skilled in the art that this embodiment can be changed, modified, replaced, and rearranged without departing from the spirit and spirit of the present utility model. The scope of the utility model is limited by the appended claims and their equivalents.

Reference List

1

first sleeve

2

second sleeve

3

wave core

31

spiral groove

4

first rotary shaft sleeve

41

round hole

42

steel ball

5

second rotary shaft sleeve

6

compression spring

7

mute

81

first mother

82

first adjustment screw

91

second mother

92

second adjustment screw

10

bearings

Claims (6)

A linear motion converted to rotary motion damping buffer structure, characterized in that it comprises a shaft core (3), a first rotary shaft sleeve (4) and a second rotary shaft sleeve (5), the outer wall surface of the shaft core (3) being provided with a spiral groove (31). , wherein the wall surface of the first rotary shaft sleeve (4) is provided with a round hole (41), a steel ball (42) being arranged in the round hole (41), the steel ball (42) being slidably fitted with the spiral groove (31) to drive the shaft core (3) to move up and down when the first rotating shaft sleeve (4) rotates, the second rotary shaft sleeve (5) being movably fitted onto the wall surface of the first rotary shaft sleeve (4) outside the round hole (41), the internal teeth on the inner wall of the second rotary shaft sleeve (5) matching with the external teeth on the end of the shaft core (3 ) connected is. Damping buffer structure with a linear movement merging into a rotary movement claim 1 , characterized in that it further comprises a first sleeve (1), a second sleeve (2), a shaft core (3), a first rotary shaft sleeve (4), a second rotary shaft sleeve (5), a compression spring (6) and a damper ( 7) wherein the inner walls of the first sleeve (1) and the second sleeve (2) are provided with internal serrations, one end of the shaft core (3) is inserted into the first rotary shaft sleeve (4), the outer wall surface of the first rotary shaft sleeve ( 4) is provided with external teeth fitted to the first sleeve (1), the outer wall surface of the second rotating shaft sleeve (5) being provided with external teeth fitted to the second sleeve (2), the compression spring (6 ) and the damper (7) are used to provide a damping effect when the shaft core (3) moves up and down. Damping buffer structure with a linear movement merging into a rotary movement claim 2 , characterized in that the compression spring (6) is arranged in the second sleeve (2), one end of the compression spring (6) being in contact with the shaft core (3), the other end of the compression spring (6) being in contact with a first adjusting mechanism for adjusting the rotational force of the first rotating shaft sleeve (4), the damper (7) being installed at an end of the shaft core (3) remote from the compression spring (6), the protruding end of the damper (7) being connected to the Shaft core (3) is in contact with the other end of the damper (7) in contact with a second adjustment mechanism for adjusting the damping force of the damper (7). Damping buffer structure with a linear movement merging into a rotary movement claim 2 , characterized in that between the first sleeve (1) and the second sleeve (2) a plain bearing (10) is arranged, wherein the plain bearing (10) is placed on the first rotary shaft sleeve (4). Damping buffer structure with a linear movement merging into a rotary movement claim 3 , characterized in that the first adjusting mechanism comprises a first nut (81) and a first adjusting screw (82), the first nut (81) being installed at the end of the second sleeve (2) remote from the first sleeve (1), the first adjustment screw (82) being screwed into the second sleeve (2) via threads, the first adjustment screw (82) being in contact with an end of the compression spring (6). Damping buffer structure with a linear movement merging into a rotary movement claim 3 , characterized in that the second adjusting mechanism comprises a second nut (91) and a second adjusting screw (92), the second nut (91) being installed at the end of the first sleeve (1) remote from the second sleeve (2), the second adjusting screw (92) being screwed into the second nut (91) via threads, the second adjusting screw (92) being in contact with an end of the damper (7).

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