Rotating device and door body assembly

Abstract

The utility model provides a rotating device and a door body assembly. The rotating device comprises a fixed part, a rotating part, a damping part and an adjusting part. The rotating part comprises a shaft body, and the rotating part is rotationally connected to the fixed part and can rotate around a rotating axis relative to the fixed part. The damping part is arranged on the outer side of the shaft body in a sleeving mode and makes contact with the shaft body, and the rotating part is configured to be capable of rotating around the rotating axis relative to the damping part so that the damping part can apply damping to the rotating part. The adjusting part is configured to move relative to the damping part in the direction parallel to the rotating axis and extrude the damping part so as to adjust the damping. According to the rotating device, the rotating damping of the rotating part can be conveniently adjusted, and the damping is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating devices, in particular to a rotating device and a door body component. Background Art

[0002] In mechanical design, the door cover of a machine or cabinet is the most commonly used design element. A door cover that not only meets the design requirements of the entire machine but also needs to be reasonable, stable, safe and reliable usually requires a variety of design structures and components to achieve; for example, automatic opening and closing door covers, automatic positioning door covers, etc.; and in the design of door covers with complex angles and complex working methods, according to diverse user needs, the door cover needs to be able to adjust the rotation damping effect in a simple and effective manner, so that the rotation feel of the door cover is easy to adjust, or the door cover can be hovered at any time, etc. Utility Model Content

[0003] The main purpose of the utility model is to provide a rotating device and a door body assembly, which can facilitate the adjustment of the damping of the rotating part and the damping is stable.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] The rotating device is used for the door body, and the rotating device includes:

[0006] Fixed part;

[0007] The rotating portion includes a shaft body, the rotating portion is rotatably connected to the fixed portion, and is configured to be rotatable relative to the fixed portion around a rotation axis;

[0008] The damping portion is sleeved on the outer side of the shaft body and contacts the shaft body, and the rotating portion is configured to be able to rotate around the rotation axis relative to the damping portion so that the damping portion applies damping to the rotating portion;

[0009] The adjusting portion is configured to be movable relative to the damping portion in a direction parallel to the rotation axis and to press the damping portion to adjust the magnitude of the damping.

[0010] In some embodiments, the adjusting part includes a nut and an elastic gasket, the shaft body is provided with an external thread, the nut is provided with an internal thread matching the external thread, the elastic gasket is sleeved on the outside of the shaft body, and along a direction parallel to the rotation axis, the elastic gasket is located between the nut and the damping part.

[0011] In some embodiments, the elastic gasket includes a first disc spring and a second disc spring, the end of the first disc spring with a smaller cross-sectional area is arranged opposite to the end of the second disc spring with a smaller cross-sectional area, the end of the first disc spring with a larger cross-sectional area faces the nut, and the end of the second disc spring with a larger cross-sectional area faces the damping part.

[0012] In some embodiments, the rotating device also includes a sleeve, and the sleeve and the adjustment part are both sleeved on the outside of the shaft body. The shaft body is configured to be able to rotate around the rotation axis relative to the sleeve. Along the direction parallel to the rotation axis, one side of the damping part abuts the adjustment part and the other side abuts the sleeve.

[0013] In some embodiments, the damping part includes a first damping plate and a second damping plate, the shaft body includes a first connecting member, and the sleeve body can be movably mounted on the outside of the shaft body. Along the direction parallel to the rotation axis, the first damping plate is located between the adjusting part and one side of the sleeve body, and the second damping plate is located between the first connecting member and the other side of the sleeve body. A groove body is provided on the side of the first damping plate facing the sleeve body and the side of the second damping plate facing the sleeve body.

[0014] In some embodiments, the shaft body is provided with a mating section, the damping portion is provided with a first through-hole, the mating section is provided in the first through-hole, the first direction and the second direction are both along directions perpendicular to the rotation axis, and the first direction is perpendicular to the second direction, the size of the mating section along the second direction is greater than the size of the mating section along the first direction, and the size of the hole edge of the first through-hole along the second direction is greater than the size of the hole edge of the first through-hole along the first direction.

[0015] In some embodiments, the rotating device further comprises a sleeve having a second through-hole, the sleeve and the adjusting portion being sleeved on an outer side of the shaft, the shaft being configured to rotate relative to the sleeve about a rotation axis, and the damping portion having one side abutting against the adjusting portion and the other side abutting against the sleeve in a direction parallel to the rotation axis;

[0016] The matching section is further arranged through the second through hole, and the size of the edge of the hole of the second through hole along the first direction is larger than the size of the matching section along the first direction.

[0017] In some embodiments, the rotating part has a first rotation limit position and a second rotation limit position, the fixed part includes a first limit member, and the rotating part also includes a second limit member connected to the shaft body. The shaft body is configured to be able to rotate along the rotation direction relative to the fixed part so that one side of the second limit member abuts against one side of the first limit member, and to be able to rotate in the opposite direction along the rotation direction relative to the fixed part so that the other side of the second limit member abuts against the other side of the first limit member.

[0018] In some embodiments, the rotating part also includes a first connecting member and a second connecting member, the first connecting member and the second connecting member are both connected to the shaft body, the first connecting member has a third through-hole, the second connecting member has a fourth through-hole, the axis of the third through-hole coincides with the axis of the fourth through-hole, the first connecting member can abut one side of the door body, and the second connecting member can abut the other side of the door body.

[0019] An embodiment of the second aspect of the present invention further provides a door body assembly, comprising a rotating device and a door body according to any one of the above embodiments.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The rotating device of the present invention includes a fixed part, a rotating part, a damping part and an adjusting part. The rotating part is rotatably connected to the fixed part and is configured to be able to rotate relative to the fixed part around the rotation axis, so that the rotating part can be suitable for connecting to the door body to drive the door body to rotate together. The damping part is sleeved on the outside of the shaft body and contacts the shaft body. The damping part is configured to be able to rotate relative to the rotating part around the rotation axis to apply damping to the shaft body. The adjusting part is configured to be able to move relative to the damping part in a direction parallel to the rotation axis and squeeze the damping part to adjust the magnitude of the damping. Compared with the damping adjustment method of directly adjusting the squeezing force in the related art, the solution of the present invention indirectly adjusts the damping applied by the damping part to the shaft body by adjusting the squeezing force of the adjusting part on the damping part, which can avoid the adjustment effect of the adjusting part making the damping part easy to loosen or be damaged. Therefore, the rotating device of the present invention can facilitate the adjustment of the damping of the rotation of the rotating part, and the damping is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a three-dimensional schematic diagram of a door assembly provided in one embodiment of the present utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the assembly of the rotating device and the door body;

[0025] Figure 3 This is a first side perspective diagram of a rotating device provided in one embodiment of the present utility model;

[0026] Figure 4 This is a three-dimensional schematic diagram of a fixing portion provided in one embodiment of the present utility model;

[0027] Figure 5 This is a cross-sectional schematic diagram of a rotating device provided in an embodiment of the present invention, wherein the fixing portion is removed;

[0028] Figure 6 This is a second side perspective diagram of a rotating device provided in an embodiment of the present invention, wherein the fixing portion is removed;

[0029] Figure 7This is an exploded schematic diagram of the second side of the rotating device provided in one embodiment of the present utility model, wherein the fixing portion is removed;

[0030] Figure 8 for Figure 7 A local enlarged schematic diagram of point A in the middle.

[0031] Description of Figure Numbers:

[0032] 100-rotating device;

[0033] 110-fixing portion; 111-first limiting member;

[0034] 120 - rotating part; 121 - shaft; 1211 - mating section; 122 - second stopper; 123 - first connecting member; 1231 - third through-hole; 124 - second connecting member; 1241 - fourth through-hole;

[0035] 130 - damping part; 131 - first damping plate; 132 - second damping plate; 133 - slot; 134 - first through hole;

[0036] 140 - adjustment part; 141 - nut; 142 - elastic washer; 143 - first butterfly spring; 144 - second butterfly spring;

[0037] 150-housing; 151-second perforation;

[0038] 200-door body;

[0039] L-rotation axis;

[0040] X-first direction;

[0041] Y-second direction.

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or", "and / or" or "and / or" appear in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] In mechanical design, the door cover of a machine or cabinet is the most commonly used design element. A door cover that not only meets the design requirements of the entire machine but also needs to be reasonable, stable, safe and reliable usually requires a variety of design structures and components to achieve; for example, automatic opening and closing door covers, automatic positioning door covers, etc.; and in the design of door covers with complex angles and complex working methods, according to diverse user needs, the door cover needs to be able to adjust the rotation damping effect in a simple and effective manner, so that the rotation feel of the door cover is easy to adjust, or the door cover can be hovered at any time, etc.

[0047] The applicant initially discovered that the rotational damping can be adjusted by squeezing the rotating shaft. However, this adjustment method is affected by the frequent rotation of the rotating shaft, so that the side of the damping member squeezing the rotating shaft needs to squeeze the rotating shaft on the one hand, and is also subject to the tangential force of the rotating shaft on the other hand, which makes the damping member easy to loosen or be damaged.

[0048] In view of this, see Figures 1-8 In an embodiment of the present invention, a rotating device 100 is provided for use with a door body 200. Specifically, the door body 200 can be any door body 200 that has opening and closing requirements and can be applied to various devices. The rotating device 100 can be used in pairs, that is, two rotating devices 100 can be provided and connected to the two ends of the door body 200 respectively. The rotating device 100 includes a fixing portion 110, a rotating portion 120, a damping portion 130, and an adjusting portion 140.

[0049] For details, see Figures 1-4 The fixing portion 110 can be used to securely connect to a structure surrounding the door body 200 installation location, such as a door frame, and further to securely install the rotating device 100. The fixing portion 110 can be configured to be detachably connected to a structure surrounding the door body 200 installation location, specifically, a bolt connection or a screw connection. Thus, the structural shape of the fixing portion 110 can be determined based on the desired installation location and the corresponding installation structure, and is not limited here.

[0050] See also Figure 5 or Figure 6 The rotating portion 120 includes a shaft 121, and the rotating portion 120 is rotatably connected to the fixed portion 110, and is configured to be able to rotate around the rotation axis L relative to the fixed portion 110. It can be understood that, based on the above-mentioned rotation setting, the rotating portion 120 can be suitable for connecting to the door body 200 to drive the door body 200 to rotate together. The rotating portion 120 can be configured to be suitable for detachable connection to the door body 200, specifically, it can be a bolt connection or a screw connection. In addition, according to requirements, the rotation axis L can be an axis extending in any direction, for example, the rotation axis L can be parallel to the direction of gravity, or can be parallel to the horizontal direction (that is, the direction perpendicular to the direction of gravity), or can extend in an oblique direction, and there is no limitation here.

[0051] See also Figure 5-Figure 6 The damping portion 130 is sleeved on the outer side of the shaft body 121 and contacts the shaft body 121. The rotating portion 120 is configured to rotate relative to the damping portion 130 about the rotation axis L, so that the damping portion 130 applies damping to the rotating portion 120. It is understood that the damping portion 130 sleeved on the inner side of the shaft body 121 can contact the outer side of the shaft body 121 and generate friction during the process of rotating relative to the shaft body 121, thereby applying rotational damping to the shaft body 121.

[0052] See also Figure 3 The adjustment portion 140 is configured to move relative to the damping portion 130 in a direction parallel to the rotation axis L, squeezing the damping portion 130 to adjust the magnitude of the damping. It is understood that the movement of the adjustment portion 140 in a direction parallel to the rotation axis L can, on the one hand, adjust the tightness with which the damping portion 130 is fitted around the shaft 121; the tighter the adjustment, the less likely the damping portion 130 will rotate with the shaft 121, resulting in greater damping. Alternatively, the adjustment can adjust the shape or tightness of the damping portion 130 itself. Thus, the above arrangement can indirectly adjust the damping applied by the damping portion 130 to the shaft 121 by adjusting the squeezing force of the adjustment portion 140 on the damping portion 130.

[0053] It can be seen that the rotating device 100 of the present invention includes a fixed portion 110, a rotating portion 120, a damping portion 130 and an adjusting portion 140. The rotating portion 120 is rotatably connected to the fixed portion 110 and is configured to be able to rotate around the rotation axis L relative to the fixed portion 110, so that the rotating portion 120 can be suitable for connecting to the door body 200 to drive the door body 200 to rotate together. The damping portion 130 is sleeved on the outside of the shaft body 121 and contacts the shaft body 121. The damping portion 130 is configured to be able to rotate around the rotation axis L relative to the rotating portion 120 to apply damping to the shaft body 121. The adjusting portion 140 is configured to be able to move relative to the damping portion 130 in a direction parallel to the rotation axis L and squeeze the damping portion 130 to adjust the magnitude of the damping. Compared to the damping adjustment method of the related art that directly adjusts the extrusion force, the solution of the present invention indirectly adjusts the damping applied by the damping unit 130 to the shaft 121 by adjusting the extrusion force exerted by the adjustment unit 140 on the damping unit 130. This prevents the adjustment of the adjustment unit 140 from causing the damping unit 130 to become loose or damaged. Therefore, the rotation device 100 of the present invention can easily adjust the damping of the rotation of the rotating unit 120, and the damping is stable.

[0054] For the adjustment form of the adjustment portion 140, see Figure 3 、 Figure 5 ,and Figure 6 In some embodiments, the adjustment portion 140 is threadedly connected to the shaft 121 so as to move relative to the damping portion 130 in a direction parallel to the rotation axis L (hereinafter referred to as the axial direction) and compress the damping portion 130. Specifically, in some embodiments, the adjustment portion 140 includes a nut 141 and an elastic washer 142. The shaft 121 has an external thread, and the nut 141 has an internal thread that mates with the external thread. The elastic washer 142 is sleeved on the outside of the shaft 121 and axially located between the nut 141 and the damping portion 130. The elastic washer 142 can be any type of elastic structure, such as a sheet structure or a spring structure. It will be understood that the threaded engagement between the nut 141 and the shaft 121 facilitates axial adjustment of the position of the nut 141 and the elastic washer 142 to abut the damping portion 130. By placing the elastic washer 142 between the nut 141 and the damping portion 130, the contact force on the damping portion 130 can be adjusted and stabilized. Furthermore, at least two nuts 141 may be provided, one for tightening and loosening the elastic washer 142, and the other on the side of the nut away from the elastic washer 142 to prevent it from retreating and to provide a positional position.

[0055] For further information, see Figure 3 、 Figure 5 ,and Figure 6In some embodiments, the elastic gasket 142 includes a first disc spring and a second disc spring, and the end of the first disc spring with a smaller cross-sectional area is arranged opposite to the end of the second disc spring with a smaller cross-sectional area, the end of the first disc spring with a larger cross-sectional area faces the nut 141, and the end of the second disc spring with a larger cross-sectional area faces the damping part 130. It can be understood that both the first disc spring and the second disc spring can withstand large loads with small deformations, and can generate large elastic forces with small deformations, which is particularly suitable for occasions with small axial space requirements. The arrangement of the first disc spring and the second disc spring with their smaller end faces facing each other can increase the overall load capacity of the two, enhance the overall stiffness, and improve the buffering and vibration absorption effects and the elastic support effects. In addition, see Figure 5-Figure 7 , more disc springs can be provided, with the side of each disc spring with a smaller cross-sectional area on one side and the side of each disc spring with a smaller cross-sectional area on the other side being arranged in pairs.

[0056] To facilitate the rotation of the damping portion 130 relative to the rotating portion 120 around the rotation axis L, see Figure 5-Figure 7 In some embodiments, the rotating device 100 further includes a sleeve 150. The sleeve 150 and the adjustment portion 140 are both sleeved on the outside of the shaft 121. The shaft 121 is configured to rotate relative to the sleeve 150 about the rotation axis L. Along the axial direction, one side of the damping portion 130 abuts the adjustment portion 140, and the other side abuts the sleeve 150. It is understood that by arranging the adjustment portion 140 and the sleeve 150 on both sides of the damping portion 130, the adjustment portion 140 and the sleeve 150 can jointly clamp the damping portion 130. After the damping portion 130 is clamped, when the rotating portion 120 rotates, the damping portion 130 remains stationary relative to the rotating portion 120 (or the damping portion 130 can be slightly moved), thereby applying damping to the rotating portion 120.

[0057] The sleeve 150 provided in the above embodiment is designed to enhance the damping effect. Figure 5-Figure 7In some embodiments, the damping portion 130 includes a first damping plate 131 and a second damping plate 132, the shaft 121 includes a first connecting member 123, and the sleeve 150 is movably mounted on the outside of the shaft 121. Axially, the first damping plate 131 is located between the adjustment portion 140 and one side of the sleeve 150, and the second damping plate 132 is located between the first connecting member 123 and the other side of the sleeve 150. It is understood that damping plates may be provided at both ends of the sleeve 150, each of which is clamped and can achieve a damping effect by rotating relative to the rotating portion 120. This arrangement enables the damping portion 130 to provide greater damping and a more stable damping effect. Furthermore, in some embodiments, a groove 133 is provided on both the side of the first damping plate 131 facing the sleeve 150 and the side of the second damping plate 132 facing the sleeve 150. The groove 133 can be used to increase the friction between the first damping plate 131 and the second damping plate 132 and the sleeve 150 , thereby making it easier to generate and adjust the damping.

[0058] In order to make the damping part 130 more convenient to apply damping to the rotating part 120, see Figure 5-Figure 8 In some embodiments, the shaft 121 is provided with a mating section 1211, and the damping portion 130 is provided with a first through-hole 134, and the mating section 1211 is inserted into the first through-hole 134. It is understood that the mating end is the portion where the shaft 121 and the damping portion 130 mate with each other, that is, the damping portion 130 is sleeved on the outside of the mating section 1211. For ease of description, the following defines the first direction X and the second direction Y as both being perpendicular to the rotation axis L, and the first direction X is perpendicular to the second direction Y. In some embodiments, the dimension of the mating section 1211 along the second direction Y is greater than the dimension of the mating section 1211 along the first direction X, and the dimension of the opening edge of the first through-hole 134 along the second direction Y is greater than the dimension of the opening edge of the first through-hole 134 along the first direction X. It is understandable that, due to the irregular cross-sectional dimensions of the mating section 1211 and the first through hole 134 (the dimension along the second direction Y is larger than the dimension along the first direction X), the mating section 1211 and the first through hole 134 can, when fitted together, enable the damping portion 130 to provide reliable damping for the rotation of the rotating portion 120. For example, see Figure 5-Figure 7 In some embodiments, the cross-sectional shape of the mating segment 1211 and the cross-sectional shape of the edge of the first through-hole 134 can both be oblate, i.e., a shape obtained by cutting a portion of a circle along a straight line, with both sides of the circle cut away. Furthermore, in other embodiments, the cross-sectional shape of the mating segment 1211 and the cross-sectional shape of the edge of the first through-hole 134 can both be rectangular, elliptical, or any other suitable shape.

[0059] Further, based on the cross-sectional size setting and the setting of the sleeve 150 in the above embodiment, see Figure 7 In some embodiments, the sleeve 150 is provided with a second through-hole 151. Accordingly, the mating segment 1211 is also disposed through the second through-hole 151. The size of the opening edge of the second through-hole 151 along the first direction X is larger than the size of the mating segment 1211 along the first direction X. It is understood that because the size of the opening edge of the second through-hole 151 is larger than the size of the mating segment 1211, the sleeve 150 is less likely to obstruct the rotation of the rotating portion 120, thereby facilitating the rotation of the rotating portion 120 relative to the sleeve 150.

[0060] See also Figure 3-Figure 4 In some embodiments, the rotating portion 120 has a first rotation limit position and a second rotation limit position. The fixed portion 110 includes a first limiting member 111. The rotating portion 120 also includes a second limiting member 122 connected to the shaft 121. The shaft 121 is configured to rotate relative to the fixed portion 110 along the rotational direction so that one side of the second limiting member 122 abuts one side of the first limiting member 111, and to rotate relative to the fixed portion 110 in the opposite rotational direction so that the other side of the second limiting member 122 abuts the other side of the first limiting member 111. It is understood that the abutment between the first limiting member 111 and the second limiting member 122 in two directions can serve to limit the rotation angle. Specifically, in some embodiments, the first limiting member 111 can be a protruding structure, such as a limiting pin, and the second limiting member 122 can have a groove adapted to the limiting pin. There can be two grooves, one of which is located on one side of the second limiting member 122 along the rotational direction, and the other is located on the opposite side of the second limiting member 122 along the rotational direction.

[0061] In order to facilitate the connection of the door body 200, the rotating part 120 drives the door body 200 to rotate. Figure 5-Figure 7In some embodiments, the rotating portion 120 further includes a first connecting member 123 and a second connecting member 124. Both the first connecting member 123 and the second connecting member 124 are connected to the shaft 121. The first connecting member 123 has a third through-hole 1231, and the second connecting member 124 has a fourth through-hole 1241. The axis of the third through-hole 1231 coincides with the axis of the fourth through-hole 1241, so that a screw can be inserted through the third through-hole 1231 and the fourth through-hole 1241. The first connecting member 123 can abut one side of the door body 200, and the second connecting member 124 can abut the other side of the door body 200. It is understood that screws (or other mounting structures) can be inserted through the third through-hole 1231 and the fourth through-hole 1241, and the first connecting member 123 and the second connecting member 124 can abut the other side of the door body 200, respectively, to fix the relative position of the door body 200 and the rotating portion 120. Specifically, the fixing can be performed by bolting. Furthermore, in some embodiments, the side of the first connector 123 facing the door body 200 can be used to clamp the door body 200 , while the other side of the first connector 123 facing away from the door body 200 can be used to abut and clamp the second damping plate 132 .

[0062] It should be noted that any one of the second limiting member 122 , the first connecting member 123 and the second connecting member 124 in the above embodiments may be detachably connected to the shaft body 121 or may be non-detachably connected to the shaft body 121 .

[0063] The second embodiment of the present invention further provides a door assembly, which includes the rotating device 100 of any of the above embodiments and the door 200. The door assembly can be used for any device with opening and closing requirements, for example, the door assembly can be assembled on a probe station for detecting chips.

[0064] Thanks to the improvements made to the rotating device 100 in the above embodiments, the door assembly of the second embodiment of the present invention has the same technical effects as the rotating device 100 in the above embodiments, which will not be described in detail here.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, within the application concept of the present invention, are included in the patent protection scope of the present invention.

Claims

1. Rotating device for door body, characterized in that: The rotating device comprises: Fixed part; a rotating portion including a shaft, the rotating portion being rotatably connected to the fixed portion and configured to be rotatable relative to the fixed portion around a rotation axis; a damping portion, sleeved on the outer side of the shaft and contacting the shaft, wherein the rotating portion is configured to be rotatable around the rotation axis relative to the damping portion so that the damping portion applies damping to the rotating portion; The adjusting portion is configured to be movable relative to the damping portion in a direction parallel to the rotation axis and to press the damping portion to adjust the magnitude of the damping.

2. The rotating device according to claim 1, characterized in that The adjusting part includes a nut and an elastic gasket. The shaft body is provided with an external thread, and the nut is provided with an internal thread matching the external thread. The elastic gasket is sleeved on the outside of the shaft body and is located between the nut and the damping part along a direction parallel to the rotation axis.

3. The rotating device according to claim 2, characterized in that The elastic gasket includes a first disc spring and a second disc spring, the end of the first disc spring with a smaller cross-sectional area is arranged opposite to the end of the second disc spring with a smaller cross-sectional area, the end of the first disc spring with a larger cross-sectional area faces the nut, and the end of the second disc spring with a larger cross-sectional area faces the damping part.

4. The rotating device according to claim 1, characterized in that The rotating device also includes a sleeve, and the sleeve and the adjusting part are both sleeved on the outside of the shaft body. The shaft body is configured to be able to rotate around the rotation axis relative to the sleeve. Along a direction parallel to the rotation axis, one side of the damping part abuts the adjusting part and the other side abuts the sleeve.

5. The rotating device according to claim 4, characterized in that The damping part includes a first damping plate and a second damping plate, the shaft body includes a first connecting member, and the sleeve body can be movably sleeved on the outside of the shaft body. Along the direction parallel to the rotation axis, the first damping plate is located between the adjusting part and one side of the sleeve body, and the second damping plate is located between the first connecting member and the other side of the sleeve body. A groove body is provided on the side of the first damping plate facing the sleeve body and the side of the second damping plate facing the sleeve body.

6. The rotating device according to claim 1, characterized in that The shaft body is provided with a mating section, and the damping part is provided with a first through-hole. The mating section is provided in the first through-hole. The first direction and the second direction are both along directions perpendicular to the rotation axis, and the first direction is perpendicular to the second direction. The size of the mating section along the second direction is larger than the size of the mating section along the first direction, and the size of the hole edge of the first through-hole along the second direction is larger than the size of the hole edge of the first through-hole along the first direction.

7. The rotating device according to claim 6, characterized in that The rotating device further includes a sleeve having a second through-hole, the sleeve and the adjusting portion being sleeved on an outer side of the shaft, the shaft being configured to be rotatable relative to the sleeve about the rotation axis, with one side of the damping portion abutting against the adjusting portion and the other side abutting against the sleeve in a direction parallel to the rotation axis; The matching section is further provided in the second through hole, and a size of an opening edge of the second through hole along the first direction is larger than a size of the matching section along the first direction.

8. The rotating device according to claim 1, characterized in that The rotating part has a first rotation limit position and a second rotation limit position, the fixed part includes a first limit member, and the rotating part also includes a second limit member connected to the shaft body, and the shaft body is configured to be able to rotate relative to the fixed part along the rotation circumference so that one side of the second limit member abuts against one side of the first limit member, and to be able to rotate relative to the fixed part in the opposite direction of the rotation circumference so that the other side of the second limit member abuts against the other side of the first limit member.

9. The rotating device according to claim 1, characterized in that The rotating part also includes a first connecting member and a second connecting member, the first connecting member and the second connecting member are both connected to the shaft body, the first connecting member has a third through-hole, the second connecting member has a fourth through-hole, the axis of the third through-hole coincides with the axis of the fourth through-hole, the first connecting member can abut against one side of the door body, and the second connecting member can abut against the other side of the door body.

10. Door assembly, characterized in that, include: The rotating device according to any one of claims 1 to 9; as well as, The door body.

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