Combined damping rotating shaft structure

Abstract

The utility model discloses a combined damping rotating shaft structure, which is used for rotationally connecting an upper cover and a lower cover and preventing the upper cover from quickly rotating and falling, and comprises first damping rotating shaft assemblies which are oppositely arranged, and each first damping rotating shaft assembly comprises a first rotating shaft, a first shell rotating relative to the first rotating shaft and a first damping assembly; the second damping rotating shaft assembly comprises a second rotating shaft, a second shell rotating relative to the second rotating shaft and a second damping assembly. According to the utility model, various damping rotating shafts are combined for use, so that the limitation of a single damping rotating shaft is overcome, the stability and the reliability of equipment are improved, the upper cover can be covered more stably, slow and approximately constant-speed falling is realized, and the free falling time without external force is 5-10 seconds.

Description

Technical Field

[0001] The utility model belongs to the technical field of damping connection structures, and particularly relates to a combined damping rotating shaft structure. Background Art

[0002] The damping shaft is a shaft with a damping function, which is widely used in various machines, equipment and tools to connect two moving parts of the product. It is often used to rotate and connect the upper cover and the lower cover. When the upper cover falls due to inertia, a damping force is generated to slow down the falling speed of the upper cover, avoiding the upper cover and the lower cover from violently colliding and causing damage to the machine or even pinching people.

[0003] The existing damping shaft structure is relatively simple, and most of them use one damping shaft to achieve the damping buffering function. Different damping shafts may have different characteristics and performances, and there are certain limitations, and they cannot be adjusted and optimized according to specific needs. Utility Model Content

[0004] The utility model provides a combined damping shaft structure, which combines multiple damping shafts together to improve the stability and reliability of the equipment. The specific scheme is as follows:

[0005] A combined damping shaft structure, used for rotationally connecting an upper cover and a lower cover and preventing the upper cover from rotating and falling rapidly, comprises a first damping shaft assembly and a second damping shaft assembly arranged opposite to each other, wherein the first damping shaft assembly comprises a first shaft, a first shell rotating relative to the first shaft, and a first damping assembly, wherein the first shaft comprises a first connecting end and a second connecting end, wherein the first connecting end is fixedly connected to the lower cover; the first shell is sleeved on the second connecting end and fixedly connected to the upper cover; and the first damping assembly is limitedly arranged between the second connecting end and the first shell;

[0006] The second damping shaft assembly includes a second shaft, a second housing that rotates relative to the second shaft, and a second damping assembly, the second shaft includes a third connecting end and a fourth connecting end, the third connecting end is fixedly connected to the lower cover; the second housing is sleeved on the fourth connecting end and fixedly connected to the upper cover; the second damping assembly is limitedly disposed between the fourth connecting end and the second housing;

[0007] Thus, the upper cover can be opened or closed relative to the lower cover with the first rotating shaft and the second rotating shaft as the rotating shaft, and the first damping component and the second damping component play a damping and buffering role to prevent the upper cover from rotating and falling rapidly.

[0008] Furthermore, the first damping assembly includes a friction plate component, which includes a plurality of first friction plates and second friction plates overlapping each other, the first friction plate is limitedly disposed on the outer wall of the second connecting end, and the second friction plate is limitedly disposed on the inner wall of the first shell.

[0009] Furthermore, the friction plate component is compressed and fixed to the first connecting end of the first rotating shaft by screws and disc springs.

[0010] Furthermore, the first damping assembly also includes a plurality of first torsion spring components, the first torsion spring components include a third friction plate, a first torsion spring and a fourth friction plate, the third friction plate is limited on the outer wall of the second connecting end, the fourth friction plate is limited on the inner wall of the first shell, and the two ends of the first torsion spring are respectively fixed on the third friction plate and the fourth friction plate.

[0011] Further, the second damping assembly includes a plurality of second torsion spring components, the second torsion spring components include a fifth friction plate, a second torsion spring and a sixth friction plate, the fifth friction plate is limited on the outer wall of the fourth connecting end, the sixth friction plate is limited on the inner wall of the second shell, and the two ends of the second torsion spring are respectively fixed on the fifth friction plate and the sixth friction plate.

[0012] Furthermore, the damping shaft structure also includes a liquid damper, which includes a third shaft, a third shell that rotates relative to the third shaft, and a damping liquid sealed in the third shell. The third shaft includes a fifth connecting end and a sixth connecting end. The fifth connecting end is fixedly connected to the fourth connecting end of the second shaft through a connector, and the sixth connecting end is inserted into the third shell.

[0013] Furthermore, the inner wall of the third shell is a hollow cylinder with one end open; the sixth connecting end is cylindrical, the end of which abuts against the bottom wall of the third shell, and a circular ring is protruded from its outer wall, and the outer diameter of the circular ring is equal to the inner diameter of the third shell, so that the circular ring can cover the opening of the third shell.

[0014] Furthermore, two first ribs are relatively protruding from the inner wall of the shell, and the end faces of the two first ribs are tangent to the outer wall of the sixth connecting end, thereby dividing the inner cavity of the third shell into a first chamber and a second chamber; two second ribs are relatively protruding from the outer wall of the sixth connecting end, and the end faces of the two second ribs are tangent to the inner wall of the third shell, and can rotate in the first chamber and the second chamber respectively; a plurality of through holes are penetrated through the side faces of the two second ribs, and spring sheets are staggered on the side faces, and a hole is opened on the spring sheet, so that the third shell generates damping resistance when it rotates counterclockwise, and does not generate damping resistance when it rotates clockwise.

[0015] Furthermore, the damping shaft structure also includes a sealing ring and a cover for sealing the opening of the third shell.

[0016] Furthermore, the bottom wall of the third shell is fixedly connected to the upper cover through a fixing block.

[0017] The beneficial effect of the utility model is that the utility model combines multiple damping shafts to overcome the limitations of a single damping shaft, improve the stability and reliability of the equipment, make the closing of the upper cover more stable, achieve a slow and nearly uniform fall, and the free fall time without external force is 5 to 10 seconds. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the assembly structure of a combined damping shaft structure of the utility model;

[0019] Figure 2 , 3 It is a structural schematic diagram of a first damping rotating shaft component of a combined damping rotating shaft structure of the utility model;

[0020] Figure 4 It is an exploded view of a first damping rotating shaft component of a combined damping rotating shaft structure of the utility model;

[0021] Figure 5 , 6 It is a schematic diagram of the assembly structure of the second damping shaft component and the liquid damper of a combined damping shaft structure of the utility model;

[0022] Figure 7 It is an exploded view of a second damping shaft assembly and a liquid damper of a combined damping shaft structure of the utility model;

[0023] Figure 8 This is a structural schematic diagram of a liquid damper with a combined damping shaft structure of the utility model.

[0024] Numbers in the figure: 1, first damping shaft assembly; 11, first shaft; 111, first connection end; 112, second connection end; 12, first housing; 13, first damping assembly; 131, friction plate member; 1311, first friction plate; 1312, second friction plate; 132, first torsion spring member; 1321, third friction plate; 1322, first torsion spring; 1323, fourth friction plate; 2, second damping shaft assembly; 21, second shaft; 211, third connection end; 212, Fourth connecting end; 22, second shell; 23, second damping assembly; 231, second torsion spring member; 2311, fifth friction plate; 2312, second torsion spring; 2313, sixth friction plate; 3, liquid damper; 31, third rotating shaft; 311, fifth connecting end; 312, sixth connecting end; 3121, circular ring; 3122, second convex rib; 32, third shell; 321, first convex rib; 4, screw; 5, disc spring; 6, connector; 7, spring piece; 8, sealing ring; 9, cover. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] The machine cover can be used for different types of equipment, such as automobiles, computers, home appliances, etc., including a lower cover and an upper cover that rotates relative to the lower cover. The upper cover is generally heavy. When rotating around the axis to cover, it will fall rapidly due to inertia and collide violently with the lower cover, which can easily cause damage to the equipment or even pinch people. The utility model provides a combined damping shaft structure, which is used to rotate and connect the upper cover and the lower cover, and can make the upper cover fall slowly and at a nearly uniform speed, and the free fall time without external force is 5 to 10 seconds.

[0028] Figure 1The schematic diagram of the structure in the open state of the machine cover is schematically given, including a lower cover in the horizontal direction and an upper cover in the vertical direction, and the joint of the upper cover and the lower cover is connected by a damping shaft structure. Specifically, the damping shaft structure is provided with two groups, which are relatively arranged at the two ends of the machine cover, including a shaft, a shell that rotates relative to the shaft, and a damping component that is limitedly arranged between the shaft and the shell and plays a damping and buffering role. The two ends of the lower cover are provided with fixed blocks for fixing the shaft, and the two ends of the upper cover are provided with fixed grooves for fixing the shell. Therefore, when the upper cover is closed relative to the lower cover, the shell rotates relative to the shaft. During the rotation process, the damping component generates a damping force to slow down the movement speed of the upper cover relative to the lower cover.

[0029] Furthermore, in order to improve the performance of the cover connection, the utility model provides a combined damping shaft structure, including a first damping shaft assembly 1 and a second damping shaft assembly 2, the first damping shaft assembly 1 including a first shaft 11, a first shell 12 rotating relative to the first shaft 11, and a first damping assembly 13 limitedly arranged between the first shaft 11 and the first shell 12, the first shaft 11 including a first connecting end 111 and a second connecting end 112, the first connecting end 111 is fixedly connected to the lower cover; the first shell 12 is sleeved on the second connecting end and The upper cover is fixedly connected; the first damping assembly 13 is limitedly arranged between the second connection end 112 and the first shell 12; the second damping shaft assembly 2 includes a second shaft 21, a second shell 22 rotating relative to the second shaft 21, and a second damping assembly 23; the second shaft 21 includes a third connection end 211 and a fourth connection end 212, and the third connection end 211 is fixedly connected to the lower cover; the second shell 22 is sleeved on the fourth connection end 212 and fixedly connected to the upper cover; the second damping assembly 23 is limitedly arranged between the fourth connection end 212 and the second shell 22. Thus, the upper cover can be opened or closed relative to the lower cover with the first shaft 11 and the second shaft 21 as the rotation axis, and the first damping assembly 13 arranged between the first shaft 11 and the first shell 12 and the second damping assembly 23 arranged between the second shaft 21 and the second shell 22 play a damping and buffering role to prevent the upper cover from rotating and falling quickly.

[0030] In this embodiment, the structure of the first damping shaft assembly 1 is shown in FIG. Figure 2-3. The first connecting end 111 and the second connecting end 112 of the first rotating shaft 11 are both cylindrical, and the outer diameter of the first connecting end 111 is larger than the outer diameter of the second connecting end 112. The outer wall of the end of the first connecting end 111 is relatively milled into a flat position so that the first connecting end 111 can be plugged into and fixed to the fixing blocks at both ends of the lower cover, and the outer wall of the second connecting end 112 is relatively milled into a flat position so that the first friction plate 1311 and the third friction plate 1321 of the first damping assembly 13 to be described below can be fixed to the outer wall of the second connecting end 112 through the flat position and keep synchronous movement with the second connecting end 112 of the first rotating shaft 11. The inner wall of the first shell 12 is a hollow cylinder, and four keyway structures are spaced apart in the circumferential direction thereof, which are arranged correspondingly to the four spline structures on the outer rings of the second friction plate 1312 and the fourth friction plate 1323 of the first damping assembly 13 to be described below, so that the second friction plate 1312 and the fourth friction plate 1323 can be fixedly arranged on the inner wall of the first shell 12 and keep synchronous movement with the first shell 12. In addition, the cross-section of the outer wall of the first shell 12 is square, and the first shell 12 is limitedly assembled into the fixing groove of the upper cover, so that the first shell 12 keeps synchronous movement with the upper cover. Such an arrangement makes the damping shaft structure of the present application simple in structure and more stable. Please refer to the structure of the second damping shaft assembly 2. Figure 4 -7, including a second rotating shaft 21, a second shell 22 rotating relative to the second rotating shaft 21 and a second damping assembly 23. The configuration of the second rotating shaft 21, the second shell 22 and the second damping assembly 23 is similar to that of the first damping rotating shaft assembly 1, and will not be described in detail here.

[0031] Preferably, the first damping assembly 13 is a combination of a friction plate component 131 and a first torsion spring component 132, wherein the first friction plate component 131 is compressed and fixed to the first connecting end 111 of the first rotating shaft 11 by means of screws 4 and disc springs 5, and the first torsion spring component 132 is arranged at the extended end of the second connecting end 112. Specifically, the friction plate component 131 includes a plurality of first friction plates 1311 and second friction plates 1312 overlapping each other, the first friction plate 1311 is limitedly arranged on the outer wall of the second connecting end 112 by means of a flat position, and the second friction plate 1312 is limitedly arranged in four keyways of the inner wall of the first housing 12 by means of four splines, the screws 4 lock and compress the disc springs 5, and the pressure of the disc springs 5 ​​compresses the first friction plate 1311 and the second friction plate 112. When the upper cover is opened or closed relative to the lower cover, the first shell 12 rotates relative to the first rotating shaft 11, and the second friction plate 1312 limited on the inner wall of the first shell 12 rotates relative to the first friction plate 1311 limited on the outer wall of the second connecting end 112. When the second friction plate 1312 rotates relative to the first friction plate 1311, friction resistance is generated, which can effectively slow down the rotation speed of the upper cover relative to the lower cover, and the torque generated by the friction resistance remains constant at any angle, so the upper cover can be suspended at any angle.

[0032] Further, the first torsion spring component 132 includes a third friction plate 1321, a first torsion spring 1322 and a fourth friction plate 1323. The third friction plate 1321 is limitedly disposed on the outer wall of the second connecting end 112 through a flat position, and the fourth friction plate 1323 is limitedly disposed in four keyways on the inner wall of the first housing 12 through four splines, and the two ends of the first torsion spring 1322 are respectively fixedly disposed between the third friction plate 1321 and the fourth friction plate 1322. When the upper cover is opened or closed relative to the lower cover, the first housing 12 rotates relative to the first rotating shaft 11, and the fourth friction plate 1323 limitedly disposed on the first housing 12 rotates relative to the third friction plate 1321 limitedly disposed on the first rotating shaft 11, and at the same time drives the first torsion spring 1322 to rotate, and the torque increases with the increase of the rotation angle of the first torsion spring 1322.

[0033] Furthermore, the second damping assembly 23 includes a plurality of second torsion spring components 231, the second torsion spring component 231 includes a fifth friction plate 2311, a second torsion spring 2312 and a sixth friction plate 2313, the fifth friction plate 2311 is limited on the outer wall of the fourth connecting end 212 by a flat position, the sixth friction plate 2313 is limited in four key grooves on the inner wall of the second shell 22 by four splines, and the two ends of the second torsion spring 2312 are respectively fixed on the fifth friction plate 2311 and the sixth friction plate 2313.

[0034] Furthermore, a liquid damper 3 is also provided at the end of the fourth connection end 212, please refer to Figure 4-8, the liquid damper 3 includes a third rotating shaft 31, a third shell 32 rotating relative to the third rotating shaft 31, and a damping liquid sealed in the third shell 32, the third rotating shaft 31 includes a fifth connecting end 311 and a sixth connecting end 312, the fifth connecting end 311 and the sixth connecting end 312 are both cylindrical, and the outer diameter of the fifth connecting end 311 is larger than the outer diameter of the sixth connecting end 312, the end outer wall of the fifth connecting end 311 is relatively milled into a flat position, so that the fifth connecting end 311 and the fourth connecting end 212 of the second rotating shaft 21 can be fixedly connected through the connector 6; the inner wall of the third shell 32 is a hollow cylinder with one end open, the sixth connecting end 312 of the third rotating shaft 31 is covered at the opening of the third shell 32 and abuts against the bottom wall of the third shell 32. Specifically, a ring 3121 is protruded at the joint between the sixth connection end 312 and the fifth connection end 311, and the outer diameter of the ring 3121 is equal to the inner diameter of the third shell 32, so that the ring 3121 can cover the opening of the third shell 32, and the opening of the third shell 32 is sealed by the sealing ring 8 and the cover 9; further, two first ribs 321 are protruded on the inner wall of the third shell 32, and when the sixth connection end 312 of the third rotating shaft 31 is inserted into the third shell 32, the first ribs 321 are protruded. The end face of the rib 321 is tangent to the outer wall of the sixth connection end 312, thereby dividing the inner cavity of the shell 32 into a first chamber and a second chamber; two second ribs 3122 are relatively protruded on the outer wall of the sixth connection end 312, and the end faces of the two second ribs 3122 are tangent to the inner wall of the third shell 32, and can rotate in the first chamber and the second chamber respectively; a plurality of through holes are opened through the side faces of the two second ribs 3122, and spring sheets 7 are staggeredly arranged on the side faces, and a hole is opened on the spring sheets 7. During the rotation process, the two first ribs 321 on the inner wall of the third shell 32 divide the inner cavity of the third shell 32 into a first chamber and a second chamber, and the two second ribs 3122 on the outer wall of the sixth connection end 312 can rotate in the first chamber and the second chamber respectively. When the third shell 32 rotates counterclockwise, the spring sheet is attached to the second rib 3122, and the liquid can only flow through a hole not covered by the spring sheet, so there will be a reaction torque. The faster the speed, the greater the damping torque, and vice versa. When the third shell 32 rotates clockwise, since the spring sheet is elastic, it will be flushed away from the second rib 3122, and the liquid can flow through many holes, with basically no damping force. In this way, the liquid damper can be realized. When the upper cover falls, there is only one hole for the liquid to pass through, thereby generating damping. The faster it falls, the greater the damping force; when the lid is opened, the liquid can flow from multiple holes, so almost no damping force is generated, and the lid can be easily opened.

[0035] In summary, the utility model makes the performance of the cover more stable and improves the user experience by combining the setting of the damping shaft structure, so that the upper cover can fall slowly and at a nearly uniform speed. Among them, the setting of the torsion spring component in the first damping shaft assembly 1 and the second damping shaft assembly 2 is to quickly balance the falling torque generated by the gravity of the upper cover. In order to ensure that the upper cover can automatically fall and completely close when falling, the total torque of the torsion spring component must be less than the torque generated by gravity at any angle, which will cause the upper cover to still fall relatively quickly and fail to achieve a basic uniform falling experience. At this time, the liquid damper 3 is introduced. Since the interior is fluid, the faster the falling speed, the greater the reverse damping force, thereby slowing down the falling speed and achieving the demand for a slow and uniform falling speed. In addition, due to the batch weight differences of the upper cover, the production torque fluctuations of the torsion spring component and the batch fluctuations of the liquid damper, in order to fine-tune the torque and compensate for these differences, a friction plate component 131 is introduced. The friction plate component 131 can generate a constant torque so that the forward torque and the reverse torque can reach an approximate balance, and the upper cover can achieve an approximate falling speed and time.

[0036] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A combined damping shaft structure, used to rotatably connect an upper cover and a lower cover and prevent the upper cover from rotating and falling rapidly, characterized in that: It comprises a first damping shaft assembly (1) and a second damping shaft assembly (2) which are arranged opposite to each other. The first damping shaft assembly (1) comprises a first shaft (11), a first shell (12) rotating relative to the first shaft (11), and a first damping assembly (13); the first shaft (11) comprises a first connecting end (111) and a second connecting end (112); the first connecting end (111) is fixedly connected to the lower cover; the first shell (12) is sleeved on the second connecting end and fixedly connected to the upper cover; the first damping assembly (13) is limitedly arranged between the second connecting end (112) and the first shell (12); The second damping shaft assembly (2) comprises a second shaft (21), a second housing (22) rotating relative to the second shaft (21), and a second damping assembly (23); the second shaft (21) comprises a third connecting end (211) and a fourth connecting end (212); the third connecting end (211) is fixedly connected to the lower cover; the second housing (22) is sleeved on the fourth connecting end (212) and fixedly connected to the upper cover; the second damping assembly (23) is limitedly arranged between the fourth connecting end (212) and the second housing (22); Thus, the upper cover can be opened or closed relative to the lower cover with the first rotating shaft (11) and the second rotating shaft (21) as the rotating shaft, and the first damping component (13) and the second damping component (23) play a damping and buffering role to prevent the upper cover from rotating rapidly and falling.

2. The combined damping shaft structure according to claim 1, characterized in that: The first damping assembly (13) comprises a friction plate component (131), wherein the friction plate component (131) comprises a plurality of first friction plates (1311) and second friction plates (1312) overlapping each other, wherein the first friction plate (1311) is limitedly arranged on the outer wall of the second connecting end (112), and the second friction plate (1312) is limitedly arranged on the inner wall of the first shell (12).

3. The combined damping shaft structure according to claim 2, characterized in that: The friction plate component (131) is fixed to the first connecting end (111) of the first rotating shaft (11) by means of screws (4) and disc springs (5).

4. The combined damping shaft structure according to claim 2, characterized in that: The first damping assembly (13) further comprises a plurality of first torsion spring components (132), wherein the first torsion spring components (132) comprise a third friction plate (1321), a first torsion spring (1322) and a fourth friction plate (1323), wherein the third friction plate (1321) is limitedly arranged on the outer wall of the second connecting end (112), and the fourth friction plate (1323) is limitedly arranged on the inner wall of the first shell (12), and the two ends of the first torsion spring (1322) are respectively fixedly arranged on the third friction plate (1321) and the fourth friction plate (1323).

5. The combined damping shaft structure according to claim 1, characterized in that: The second damping assembly (23) includes a plurality of second torsion spring components (231), the second torsion spring components (231) include a fifth friction plate (2311), a second torsion spring (2312) and a sixth friction plate (2313), the fifth friction plate (2311) being limitedly arranged on the outer wall of the fourth connecting end (212), the sixth friction plate (2313) being limitedly arranged on the inner wall of the second shell (22), and the two ends of the second torsion spring (2312) being fixedly arranged on the fifth friction plate (2311) and the sixth friction plate (2313), respectively.

6. The combined damping shaft structure according to claim 5, characterized in that: The invention also comprises a liquid damper (3), the liquid damper (3) comprising a third rotating shaft (31), a third shell (32) rotating relative to the third rotating shaft (31), and a damping liquid sealed in the third shell (32), the third rotating shaft (31) comprising a fifth connecting end (311) and a sixth connecting end (312), the fifth connecting end (311) being fixedly connected to the fourth connecting end (212) of the second rotating shaft (21) via a connector (6), and the sixth connecting end (312) being inserted into the third shell (32).

7. The combined damping shaft structure according to claim 6, characterized in that: The inner wall of the third shell (32) is a hollow cylinder with one end open; the sixth connecting end (312) is a cylinder, the end of which abuts against the bottom wall of the third shell (32), and a circular ring (3121) is protruded from its outer wall, and the outer diameter of the circular ring (3121) is equal to the inner diameter of the third shell (32), so that the circular ring (3121) can cover the opening of the third shell (32).

8. The combined damping shaft structure according to claim 7, characterized in that: The inner wall of the shell (32) is provided with two first convex ribs (321) protruding from each other, and the end faces of the two first convex ribs (321) are tangent to the outer wall of the sixth connecting end (312), thereby dividing the inner cavity of the third shell (32) into a first chamber and a second chamber; the outer wall of the sixth connecting end (312) is provided with two second convex ribs (3122) protruding from each other, and the end faces of the two second convex ribs (3122) are tangent to the inner wall of the third shell (32), and can rotate in the first chamber and the second chamber respectively; the side surfaces of the two second convex ribs (3122) are penetrated by a plurality of through holes, and the side surfaces are staggeredly provided with spring sheets (7), and a hole is provided on the spring sheets (7), so that the third shell (32) generates damping resistance when rotating counterclockwise, and generates no damping resistance when rotating clockwise.

9. The combined damping shaft structure according to claim 7, characterized in that: It also includes a sealing ring (8) and a cover (9) for sealing the opening of the third shell (32).

10. The combined damping shaft structure according to claim 7, characterized in that: The bottom wall of the third shell (32) is fixedly connected to the upper cover via a fixing block.

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