A damped rotating structure

Abstract

The utility model discloses a kind of damping rotation structure, including shaft, first damping sleeve, second damping sleeve, shaft sleeve, first swing arm and second swing arm, first swing arm is equipped with first swivel seat and second swivel seat, first swivel seat is equipped with first jack, second swivel seat is equipped with second jack, second swing arm is equipped with third swivel seat, third swivel seat is equipped with third jack;The one end of shaft is equipped with first thread group and is worn in first jack, the other end of shaft is equipped with clamping stop, clamping stop is equipped with second thread group and is worn in second jack, shaft sleeve is equipped with third thread group and is worn in third jack, first damping sleeve and second damping sleeve are all set in the outside of shaft, shaft sleeve is set in the outside of first damping sleeve and second damping sleeve, first damping sleeve is equipped with first elastic convex strip, second damping sleeve is equipped with second elastic convex strip.The utility model can disperse damping force to different damping sleeve, damping slows down effect continues reliable, adjustment feedback is reliable, and adjustment degree of freedom is high.

Description

Technical Field

[0001] This utility model relates to the field of damping components, and in particular to a damping rotation structure. Background Technology

[0002] Damping is an important concept in physics and engineering, referring to the phenomenon of energy gradually dissipation during the vibration or motion of a system, manifested as a gradual decrease in amplitude or a gradual slowing of motion. The function of damping is to consume the kinetic energy of the system, eventually causing it to tend towards a static or stable state, and damping structures are structures that achieve this function.

[0003] In terms of the rotational motion control of equipment, the damping rotation structure has a decisive influence on the smoothness of motion, positioning accuracy and operating feel. In the existing technology, the damping rotation structure mostly adopts a structure of spring, shaft and bushing. The spring is used to connect the shaft and bushing, thereby forming an axial compressive force on the shaft, thus forming a damping rotation positioning effect. The positioning effect of this damping rotation structure is unstable and difficult to adjust. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a damped rotation structure, which provides stable and reliable damped rotation positioning, high stability with stepless adjustment, and convenient adjustment.

[0005] A damping rotation structure according to an embodiment of the present utility model includes a shaft, a first damping sleeve, a second damping sleeve, a shaft assembly, a first swing arm and a second swing arm. The first swing arm is provided with a first rotating seat and a second rotating seat spaced apart. The first rotating seat is provided with a first insertion hole, and the second rotating seat is provided with a second insertion hole. The second swing arm is provided with a third rotating seat located between the first rotating seat and the second rotating seat. The third rotating seat is provided with a third insertion hole. One end of the shaft is provided with a first set of teeth and passes through a first insertion hole, the first set of teeth abutting against the inner wall of the first insertion hole. The other end of the shaft is provided with a locking block, the locking block is provided with a second set of teeth and passes through a second insertion hole, the second set of teeth abutting against the inner wall of the second insertion hole. The shaft sleeve is provided with a third set of teeth and passes through a third insertion hole, the third set of teeth abutting against the inner wall of the third insertion hole. A first damping sleeve and a second damping sleeve are both sleeved on the outside of the shaft. The shaft sleeve is sleeved on the outside of the first damping sleeve and the second damping sleeve. The first damping sleeve is provided with a first elastic protrusion, the second damping sleeve is provided with a second elastic protrusion, the first elastic protrusion and the second elastic protrusion abutting against the inner wall of the shaft sleeve.

[0006] In this embodiment, there are several first elastic protrusions and several second elastic protrusions, and both the first elastic protrusions and the second elastic protrusions extend along the circumferential direction of the shaft.

[0007] In this embodiment, the length of the first damping sleeve is greater than the length of the second damping sleeve, the distance between any two adjacent first elastic protrusions is D, and the distance between any two adjacent second elastic protrusions is d, where D>d.

[0008] In this embodiment, the first damping sleeve and all the first elastic protrusions are integrally formed elastic material structures, and the second damping sleeve and all the second elastic protrusions are integrally formed elastic material structures.

[0009] In this embodiment, the first damping sleeve is provided with a first elastic relief groove, and the second damping sleeve is provided with a second elastic relief groove. Both the first elastic relief groove and the second elastic relief groove are parallel to the shaft.

[0010] In this embodiment, the extension directions of the first tooth pattern group, the second tooth pattern group, and the third tooth pattern group are all parallel to the shaft.

[0011] In this embodiment, the third rotating base is cylindrical, and the length of the third rotating base is greater than the length of the shaft assembly. Both ends of the third rotating base are provided with clearance grooves, and the two clearance grooves are respectively connected to the two ends of the third insertion hole.

[0012] In this embodiment, the third rotary seat is provided with an adjustment clearance groove connected to the side of the third insertion hole.

[0013] In this embodiment, one end of the shaft assembly is provided with a guide recess.

[0014] The embodiments of this utility model have at least the following beneficial effects: By separately fitting the first and second damping sleeves onto different areas of the shaft, the damping force can be distributed to different damping sleeves, effectively improving the stability of the damping positioning effect. The two cooperating damping sleeves can effectively cope with the special situation of failure of a single damping sleeve, avoiding the sudden disappearance of damping force and effectively ensuring the continuous effectiveness of the damping force. The damping reduction effect is continuous and reliable, the stepless rotation positioning effect is stable and reliable, the adjustment feedback is reliable, and the adjustment accuracy is high. Through the deformation compensation of the elastic protrusion, the tightness of the contact between the corresponding damping sleeve and the shaft and shaft assembly can be improved, the positioning effect is stable, and the assembly difficulty can be reduced. The inner wall of the damping sleeve is fully attached to the shaft, the positioning connection structure is stable, and the elastic protrusion contacts the shaft assembly in a way that reduces the contact area, which can effectively reduce the risk of jamming, thereby improving the smoothness of adjustment, the stepless adjustment effect is good, and the adjustment operation is simple. Through the coupling structure of three sets of locking teeth, part of the rotation positioning force can be effectively distributed, which not only reduces the workload of the damping sleeve and improves the service life of the overall structure, but also improves the stepless continuous adjustment performance and the degree of adjustment freedom. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional structural diagram of the damping rotation structure according to an embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of the damping rotation structure of an embodiment of the present utility model from another perspective. Figure 3 This is a schematic diagram of the main structure of the damping rotation structure according to an embodiment of the present invention; Figure 4 For along Figure 3 A schematic diagram of the cross-sectional structure of line A-A'; Figure 5 This is an exploded structural diagram of the damping rotation structure according to an embodiment of the present invention; Figure 6 This is an exploded view of the damping rotation structure of an embodiment of the present invention.

[0016] Figure label: Shaft 100, first toothed group 110, locking block 120, second toothed group 130; First damping sleeve 200, first elastic protrusion 210, first elastic relief groove 220; Second damping sleeve 300, second elastic protrusion 310, second elastic relief groove 320; Shaft assembly 400, third toothed group 410, guide flange 420; First swing arm 500, first rotating base 510, first socket 511, second rotating base 520, second socket 521; Second swing arm 600, third rotating seat 610, third insertion hole 611, clearance groove 612, adjustment clearance groove 613. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, if the wire sleeve or bracket is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Damping refers to the phenomenon of energy gradually dissipation during the vibration or motion of a system, manifested as a gradual decrease in amplitude or a gradual slowing of motion. The function of damping is to dissipate the kinetic energy of the system, eventually bringing it to a state of rest or stability. Damping structures are structures that achieve this function. In the rotational motion control of equipment, damped rotational structures have a decisive influence on motion smoothness, positioning accuracy, and operational feel.

[0022] In existing technologies, damping rotation structures often employ a combination of springs, a rotating shaft, and a bushing. Springs, such as disc springs, connect the rotating shaft to the bushing, creating axial compressive force on the shaft to achieve a damped rotational positioning effect. However, this type of damping rotation structure suffers from unstable positioning, is prone to loosening, has poor free-adjustment and pause positioning, and is difficult to adjust. Furthermore, the wearable auxiliary shooting bracket of this invention considers that a single spring or friction plate is prone to wear after long-term use, leading to a decrease in damping force. This can easily cause damping imbalance during rotational adjustment, affecting the stability of the positioning effect.

[0023] The following is for reference only. Figure 1 To be continued Figure 6 This invention describes a damped rotation structure in an embodiment of the present invention. The damped rotation positioning effect is stable and reliable, and the stepless adjustment provides high stability and is convenient.

[0024] Reference Figures 1 to 6A damping rotation structure according to an embodiment of the present invention includes a shaft 100, a first damping sleeve 200, a second damping sleeve 300, a shaft assembly 400, a first swing arm 500, and a second swing arm 600. One end of the first swing arm 500 is provided with a first rotating seat 510 and a second rotating seat 520 spaced apart. The first rotating seat 510 is provided with a first insertion hole 511, and the second rotating seat 520 is provided with a second insertion hole 521. One end of the second swing arm 600 is provided with a third rotating seat 610 located between the first rotating seat 510 and the second rotating seat 520. The third rotating seat 610 is provided with a third insertion hole 611. The central axes of the first insertion hole 511, the second insertion hole 521, and the third insertion hole 611 are collinear. The first insertion hole 511, the third insertion hole 611, and the second insertion hole 521 are arranged sequentially along the extension direction of the shaft 100. One end of the shaft 100 has a first toothed thread set 110, and one end of the shaft 100 passes through a first insertion hole 511. The first insertion hole 511 is a round hole, and the shaft 100 is a cylindrical rod. The first toothed thread set 110 abuts against the inner wall of the first insertion hole 511. The other end of the shaft 100 has a locking block 120. The shaft 100 and the locking block 120 are integrally formed. The surface of the locking block 120 has a second toothed thread set 130, and the locking block 120 passes through a second insertion hole 521. The second toothed thread set 130 abuts against the inner wall of the second insertion hole 521. The surface of the shaft assembly 400 is provided with a third toothed group 410. The shaft assembly 400 passes through the third insertion hole 611, and the third toothed group 410 abuts against the inner wall of the third insertion hole 611. The locking block 120 is cylindrical, and the outer contour of the shaft assembly 400 is cylindrical. Both the second insertion hole 521 and the third insertion hole 611 are round holes. The first damping sleeve 200 and the second damping sleeve 300 are both sleeved on the shaft 100, and the shaft assembly 400 is sleeved on the first damping sleeve 200 and the second damping sleeve 300. The center of the shaft assembly 400 is set for the first damping sleeve 200 to pass through. The circular channels of the first damping sleeve 200 and the second damping sleeve 300 enable regional damping connection between the shaft 100 and the shaft assembly 400. The two damping sleeves operate independently, effectively improving the fault tolerance of the damping effect by dispersing the damping action area. This prevents abrupt changes in the damping force between the shaft 100 and the shaft assembly 400, thereby effectively improving the damping effect between them. The damping effect is continuous and stable, and the adjustment effect is stable and reliable. The surface of the first damping sleeve 200 is provided with a first elastic protrusion 2. 10. The surface of the second damping sleeve 300 is provided with a second elastic protrusion 310. The first elastic protrusion 210 and the second elastic protrusion 310 both abut against the inner wall of the shaft assembly 400. The first elastic protrusion 210 and the second elastic protrusion 310 can not only reduce the assembly difficulty, but also improve the damping positioning effect of the two damping sleeves on the shaft 100 and the shaft assembly 400. The adjustment effect is reliable and can effectively avoid jamming caused by excessive contact area. At the same time, it can avoid the loss of adjustment control caused by sudden change in damping force. The adjustment difficulty is low and the adjustment operation is simple.

[0025] In this design, the diameter of the shaft 100 is equal to the diameter of the first insertion hole 511, the diameter of the locking block 120 is equal to the diameter of the second insertion hole 521, and the diameter of the shaft assembly 400 is equal to the diameter of the third insertion hole 611. The diameters of the locking block 120 and the shaft assembly 400 are both larger than the diameter of the shaft 100. One end of the shaft 100 is connected to the first rotating seat 510 through the first toothed thread group 110 with an interference fit. The locking block 120 is connected to the second rotating seat 520 through the second toothed thread group 130 with an interference fit. The shaft assembly 400 is connected to the third rotating seat 610 through the third toothed thread group 410 with an interference fit. The interference fit connection facilitates assembly and improves the stability of the assembly structure.

[0026] By separately fitting the first damping sleeve 200 and the second damping sleeve 300 around different areas of the shaft 100, the damping force, i.e., the frictional force, can be distributed to different damping sleeves, effectively improving the stability of the damping positioning effect. The two cooperating damping sleeves can effectively handle the special situation of a single damping sleeve failure. When one damping sleeve fails, the other damping sleeve can provide a damping and motion-reducing adjustment effect, preventing the damping force from abruptly disappearing and effectively ensuring the continuous effectiveness of the damping force. The damping and motion-reducing effect is continuous and reliable, the stepless rotation positioning effect is stable and reliable, the adjustment feedback is reliable, the adjustment feel is good, the user experience is good, and the adjustment precision is high. Through the deformation compensation of the elastic convex strip, the tightness of the contact between the corresponding damping sleeves and the shaft assembly 400 can be improved, resulting in stable positioning and reducing assembly difficulty. The inner wall is fully attached to the shaft 100, and the positioning and connection structure is stable. The elastic protrusion contacts the shaft assembly 400 by reducing the contact area, which can effectively reduce the risk of jamming and thus improve the smoothness of adjustment. The stepless adjustment effect is good, and the adjustment operation is simple and convenient. Through the coupling structure of three sets of locking teeth, part of the rotational positioning force can be effectively distributed, which can not only reduce the workload of the damping sleeve and improve the service life of the overall structure, but also improve the stepless continuous adjustment performance and the degree of adjustment freedom. The assembly of each component is realized by the single-sided sleeve connection, which can simplify the assembly operation, reduce the assembly difficulty, and improve the assembly efficiency. The shaft 100 is connected to the first rotating seat 510 and the second rotating seat 520 through the end with different diameters and the locking block 120 respectively. The connection with different diameters can improve the positioning effect and improve the stability of the structure.

[0027] It is understandable that the first elastic protrusion 210 on the first damping sleeve 200 has several protrusions, and the second elastic protrusion 310 on the second damping sleeve 300 has several protrusions. Both the first elastic protrusion 210 and the second elastic protrusion 310 extend along the circumferential direction of the shaft 100. By setting two sets of elastic protrusions that extend along the circumferential direction of the shaft 100, the resistance formed during adjustment can be effectively reduced, and the smoothness of the adjustment action can be effectively improved. Moreover, since each set has multiple elastic protrusions, the damping positioning effect formed by the corresponding damping sleeve can be ensured, and the adjustment result is stable and reliable.

[0028] It is understandable that the length of the first damping sleeve 200 is greater than the length of the second damping sleeve 300. The distance between each pair of adjacent first elastic protrusions 210 is D, and the distance between each pair of adjacent second elastic protrusions 310 is d, where D>d. By setting the lengths of the two damping sleeves to be different and the distances between the two sets of elastic protrusions to be different, different damping positioning effects can be formed.

[0029] The two sets of damping sleeves and their corresponding elastic protrusions can form two different damping forces. Even if one of the damping forces is exceeded, the other damping force is still used for positioning, which can further prevent the damping from disappearing abruptly. The damping adjustment and positioning effect is stable and reliable, and can effectively cope with complex usage scenarios.

[0030] It is understandable that the first damping sleeve 200 and all the first elastic protrusions 210 thereon are integrally formed elastic material structures, such as silicone tube structures. The integrally formed structure can effectively improve the reliability of the damping positioning effect formed by the first damping sleeve 200 and the first elastic protrusions 210 thereon; the second damping sleeve 300 and all the second elastic protrusions 310 thereon are also integrally formed elastic material structures, such as silicone tube structures. The integrally formed structure can effectively improve the reliability of the damping positioning effect formed by the second damping sleeve 300 and the second elastic protrusions 310 thereon, and the adjustment effect is stable and reliable.

[0031] Understandably, the first damping sleeve 200 is provided with a first elastic relief groove 220, and the second damping sleeve 300 is provided with a second elastic relief groove 320. Both the first elastic relief groove 220 and the second elastic relief groove 320 are parallel to the central axis of the shaft 100. The diameters of the first damping sleeve 200 and the second damping sleeve 300 are smaller than the diameter of the shaft 100, which can effectively improve the tight fit of the first damping sleeve 200 and the second damping sleeve 300 when installed on the shaft 100. In addition, the first elastic relief groove 220 and the second elastic relief groove 320 can effectively reduce the difficulty of installing the first damping sleeve 200 and the second damping sleeve 300 on the shaft 100, and can also effectively extend the service life of the first damping sleeve 200 and the second damping sleeve 300, preventing them from being overstretched and losing their elasticity, thus ensuring a continuous and reliable damping positioning effect.

[0032] It is understood that the first tooth pattern group 110 includes a plurality of first convex teeth evenly distributed around the circumference of the shaft 100, the second tooth pattern group 130 includes a plurality of second convex teeth evenly distributed around the circumference of the shaft 100, and the third tooth pattern group 410 includes a plurality of third convex teeth evenly distributed around the circumference of the shaft 100. The extension directions of the first tooth pattern group 110, the second tooth pattern group 130, and the third tooth pattern group 410 are all parallel to the shaft 100, that is, the extension directions of the first convex teeth, the second convex teeth, and the third convex teeth are all parallel to the shaft 100.

[0033] The circular interlocking structure, combined with the toothed pattern distributed along the circumference and extending axially, can absorb some of the adjustment force or vibration force, reduce the adjustment and positioning burden of the damping sleeve and its elastic protrusions, and effectively extend the service life of the overall structure.

[0034] It is understood that the third rotary seat 610 is cylindrical, and the shaft assembly 400 is a circular bushing. The length of the third rotary seat 610 is greater than the length of the shaft assembly 400. Both ends of the third rotary seat 610 are provided with relief grooves 612. The two relief grooves 612 are respectively connected to the opposite ends of the third insertion hole 611 so that the relief grooves 612 are located at the opposite ends of the shaft assembly 400. With the length of the third rotary seat 610 being greater than the length of the shaft assembly 400, it can effectively prevent the shaft assembly 400 from contacting the first rotary seat 510 or the second rotary seat 520, effectively avoid unnecessary interference, and effectively improve the reliability and smoothness of the damping adjustment action.

[0035] Understandably, the third rotary base 610 is provided with an adjustment relief groove 613 connected to the side of the third insertion hole 611. By adjusting the relief groove 613, it can provide a locking space for the interference fit connection between the third toothed group 410 and the third rotary base 610, which can improve the stability of the assembly structure and reduce the assembly difficulty.

[0036] It is understandable that one end of the shaft assembly 400 is provided with a guide flange 420, which also penetrates the end of the third toothed group 410. The guide flange 420 facilitates the alignment and assembly connection between the shaft assembly 400 and the third rotary seat 610, thereby reducing assembly difficulty and increasing assembly efficiency.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A damped rotational structure, characterized in that, The device includes a shaft (100), a first damping sleeve (200), a second damping sleeve (300), a shaft assembly (400), a first swing arm (500), and a second swing arm (600). The first swing arm (500) has a first rotating seat (510) and a second rotating seat (520) spaced apart. The first rotating seat (510) has a first insertion hole (511), and the second rotating seat (520) has a second insertion hole (521). The second swing arm (600) has a third rotating seat (610) located between the first rotating seat (510) and the second rotating seat (520). The third rotating seat (610) has a third insertion hole (611). One end of the shaft (100) is provided with a first toothed thread set (110) and passes through the first insertion hole (511). The first toothed thread set (110) abuts against the inner wall of the first insertion hole (511). The other end of the shaft (100) is provided with a locking block (120). The locking block (120) is provided with a second toothed thread set (130) and passes through the second insertion hole (521). The second toothed thread set (130) abuts against the inner wall of the second insertion hole (521). The shaft assembly (400) is provided with a third toothed thread set (410) and passes through the third insertion hole (611). The third toothed group (410) abuts against the inner wall of the third insertion hole (611). The first damping sleeve (200) and the second damping sleeve (300) are both sleeved on the outside of the shaft (100). The shaft assembly (400) is sleeved on the outside of the first damping sleeve (200) and the second damping sleeve (300). The first damping sleeve (200) is provided with a first elastic protrusion (210), and the second damping sleeve (300) is provided with a second elastic protrusion (310). The first elastic protrusion (210) and the second elastic protrusion (310) abut against the inner wall of the shaft assembly (400).

2. The damped rotation structure according to claim 1, characterized in that, The first elastic protrusion (210) has several sections, and the second elastic protrusion (310) has several sections. Both the first elastic protrusion (210) and the second elastic protrusion (310) extend along the circumferential direction of the shaft (100).

3. The damped rotation structure according to claim 2, characterized in that, The length of the first damping sleeve (200) is greater than the length of the second damping sleeve (300). The distance between each two adjacent first elastic protrusions (210) is D, and the distance between each two adjacent second elastic protrusions (310) is d, where D>d.

4. The damped rotation structure according to claim 3, characterized in that, The first damping sleeve (200) and all the first elastic protrusions (210) are integrally formed elastic material structures, and the second damping sleeve (300) and all the second elastic protrusions (310) are integrally formed elastic material structures.

5. A damped rotational structure according to claim 4, characterized in that, The first damping sleeve (200) is provided with a first elastic relief groove (220), and the second damping sleeve (300) is provided with a second elastic relief groove (320). Both the first elastic relief groove (220) and the second elastic relief groove (320) are parallel to the shaft (100).

6. The damped rotation structure according to claim 1, characterized in that, The first toothed group (110), the second toothed group (130) and the third toothed group (410) all extend in directions parallel to the shaft (100).

7. The damped rotation structure according to claim 1, characterized in that, The third rotating base (610) is cylindrical and its length is greater than that of the shaft assembly (400). Both ends of the third rotating base (610) are provided with clearance grooves (612), and the two clearance grooves (612) are respectively connected to the opposite ends of the third insertion hole (611).

8. The damped rotation structure according to claim 1, characterized in that, The third rotary table (610) is provided with an adjustment relief groove (613) connected to the side of the third insertion hole (611).

9. A damped rotational structure according to claim 1, characterized in that, One end of the shaft assembly (400) is provided with a guide flange (420).

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