Buffer Assembly

Abstract

To provide a buffer assembly having a buffer function in assembling and capable of being quickly disassembled.SOLUTION: A buffer assembly 100 includes a screw rod 140, a base 110, a rotary member 120 and a clamp ring 130. The rotary member 120 is rotatably disposed on the base 110 along a rotation shaft. Since the clamp ring 130 is detachably connected to the rotary member 120 along a connection axis, the clamp ring 130 is suitably used for switching to a connection state or an open state. The clamp ring 130 has a position regulation space, and the rotation shaft is orthogonal to the connection axis. When the clamp ring 130 is in the connection state, the position regulation space and a through hole are positioned on the rotation shaft, and the screw rod 140 presses and rotates the clamp ring 130, so that the screw rod 140 passes through the position regulation space and the through hole 122. When the clamp ring 130 is in the open state, the position regulation space is deviated from the rotation shaft.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an assembly, and more particularly to a buffer assembly. [Background technology]

[0002] In the existing technology, a buffer assembly for buffering is disposed on the chassis and the member during assembly. The buffer assembly is, for example, a damping gear. The damping gear needs to be added with damping oil to increase friction and obtain a buffering effect. However, the damping characteristics of the damping oil change due to factors such as temperature and humidity, and the buffering effect of the damping gear is weakened or lost. When the member is to be removed from the chassis, the member interferes with the damping gear and cannot be removed immediately. Summary of the Invention [Problem to be solved by the invention]

[0003] When removing a part from a chassis, the part often interferes with the damping gear and cannot be removed immediately. The present invention provides a buffer assembly that has a buffer function during assembly and can be quickly disassembled. [Means for solving the problem]

[0004] The buffer assembly of the present invention includes a screw rod, a base, a rotating member, and a clamp ring. The rotating member is rotatably disposed on the base along a rotation axis. The rotating member includes a through hole. The clamp ring is detachably connected to the rotating member along a connection axis, so that the clamp ring is suitable for switching to a connected state or an open state. The clamp ring has a position restriction space, and the rotation axis is perpendicular to the connection axis. When the clamp ring is in the connected state, the position restriction space and the through hole are located on the rotation axis, and the screw rod pushes the clamp ring to rotate, so that the screw rod passes through the position restriction space and the through hole. When the clamp ring is in the open state, the position restriction space is misaligned with the rotation axis, and the screw rod passes through the through hole.

[0005] In one embodiment of the present invention, the clamp ring includes a clamp ring body and two position restriction protrusions. The two position restriction protrusions protrude from the clamp ring body toward the connection axis. The position restriction space is located at the center of the clamp ring body.

[0006] In one embodiment of the present invention, the position restriction space gradually expands from the positions corresponding to the two position restriction protrusions toward both ends along the connection axis.

[0007] In one embodiment of the present invention, the rotation member includes an engagement protrusion, and the width of the engagement protrusion in a direction perpendicular to the connection axis is greater than the center distance of the position restriction space in a direction perpendicular to the connection axis.

[0008] In one embodiment of the present invention, the outer diameter of the screw rod is greater than the center distance of the position control space in a direction perpendicular to the connection axis, and the outer diameter is smaller than the diameter of the through hole of the rotating member. When the clamping ring is in a connection state, the clamping ring is suitable for being pushed and rotated by the screw rod, and the clamping ring drives the rotating member to rotate.

[0009] In one embodiment of the present invention, the rotating member includes a first portion, an engagement protrusion, and a second portion. The engagement protrusion is connected between the first portion and the second portion, and the clamp ring is located between the first portion and the second portion. The clamp ring is adapted to engage with the engagement protrusion such that the position restriction space is displaced relative to the rotation axis.

[0010] In one embodiment of the present invention, the screw rod includes a flat portion and a helical portion. The flat portion is connected to the helical portion. The flat portion and the helical portion extend along a rotation axis. When the flat portion passes through the position restriction space, the flat portion is at least partially located on the connection axis.

[0011] In one embodiment of the present invention, the clamp ring further includes a clamp ring body and an operating portion connected to the clamp ring body. The operating portion extends along the axis of rotation. The second portion of the rotating member includes an inclined surface. The inclined surface faces the operating portion.

[0012] In one embodiment of the present invention, the base includes an accommodation space, and the clamp ring and the rotating member are movably disposed within the accommodation space. When the clamp ring is in the open state, the clamp ring is at least partially separated from the accommodation space.

[0013] In one embodiment of the invention, the axis of rotation is parallel to the direction of gravity. Effect of the Invention

[0014] Based on the above, the rotating member and the clamp ring of the buffer assembly disclosed in the present invention can be used to cooperate with the screw rod to realize the buffer function during assembly. And the clamp ring can move relative to the rotating member to switch between a connected state and an open state, so that when the clamp ring is in the open state, the screw rod is misaligned with the position control space, and the screw rod passes through the rotating member without contacting the clamp ring. Therefore, the purpose of quick removal can be achieved.

[0015] In order to make the above mentioned features and advantages of the present invention clearer and easier to understand, embodiments are shown and described in detail below with reference to the accompanying drawings. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a schematic diagram of a buffer assembly according to one embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded view of the buffer assembly and housing of FIG. 1. [Diagram 3] 2A to 2C are cross-sectional views showing a process of connecting the clamp ring and the rotating member in FIG. 1. [Figure 4A] 2A to 2C are cross-sectional views showing a process of connecting the clamp ring and the rotating member in FIG. 1. [Figure 4B] 13 is a schematic diagram of the clamp ring and the rotating member after they are connected to each other. FIG. [Diagram 5] 2 is a schematic diagram of the clamp ring of FIG. 1 in a connected state. FIG. [Figure 6] FIG. 2 is a schematic diagram of the clamp ring of FIG. 1 in an open state. [Figure 7] 2A to 2C are cross-sectional views showing a movement process of the screw rod of the buffer assembly of FIG. 1. [Figure 8] 2A to 2C are cross-sectional views showing a movement process of the screw rod of the buffer assembly of FIG. 1. [Figure 9] 2A to 2C are cross-sectional views showing a movement process of the screw rod of the buffer assembly of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] FIG 1 is a schematic diagram of a buffer assembly according to an embodiment of the present invention. FIG 2 is an exploded view of the buffer assembly and housing of FIG 1. FIG 3 and FIG 4A are cross-sectional views showing the process of connecting the clamp ring and the rotating member of FIG 1. FIG 4B is a schematic diagram after the clamp ring and the rotating member are connected. Cartesian coordinates XYZ are incorporated in the specification to facilitate understanding of the description of the members.

[0018] Please refer to Figs. 1 to 4B. Fig. 1 shows a chassis 200, a housing 300 disposed in the chassis 200, and a buffer assembly 100. The buffer assembly 100 includes a base 110, a rotating member 120, a clamp ring 130, and a screw rod 140. The base 110 is fixed to the chassis 200, and the screw rod 140 is fixed to a side surface of the housing 300. The base 110 and the screw rod 140 are fixed to the chassis 200 and the housing 300, respectively, by, for example, screws, but are not limited thereto. The housing 300 of this embodiment is, for example, a housing of a fan assembly, and the buffer assembly 100 is disposed on both sides of the chassis 200 and the housing 300, respectively, but are not limited thereto.

[0019] The base 110 includes an accommodation space S. The rotating member 120 is rotatably disposed in the accommodation space S of the base 110 along a rotation axis R. The rotating member 120 includes a through hole 122, and the central axis of the through hole 122 is the rotation axis R. The clamp ring 130 is detachably connected to the rotating member 120 along a connection axis L. The clamp ring 130 includes a clamp ring body 134, and the connection axis L is perpendicular to the central axis of the clamp ring body 134 and perpendicular to the rotation axis R. When the rotating member 120 is connected to the clamp ring 130, the central axis of the through hole 122 can be coincident with the central axis of the clamp ring body 134. The clamp ring 130 can rotate together with the rotating member 120. The rotation axis R in this embodiment is parallel to the Z axis and the gravity direction G, but is not limited thereto. The screw rod 140 can pass through the rotating member 120, the clamp ring 130, and the base 110 along the rotation axis R.

[0020] As shown in FIG. 2 and FIG. 3, the clamp ring 130 includes a position restriction space 132, two fasteners 136, and two position restriction protrusions 138. The clamp ring body 134 has an opening 135, and the shape of the clamp ring body 134 is, for example, C-shaped. The position restriction space 132 is located at the center of the clamp ring body 134 and connected to the opening 135, and the position restriction space 132 and the opening 135 are both located on the connection axis L. In other words, the connection axis L is an extending axis connecting the center of the opening 135 and the center of the position restriction space 132. The two position restriction protrusions 138 protrude from both sides of the clamp ring body 134 toward the connection axis L (i.e., the center of the clamp ring body 134). Each of the position restriction protrusions 138 is, for example, arc-shaped. The position restriction space 132 gradually expands from the positions corresponding to the two position restriction protrusions 138 toward both ends along the connection axis L. Each of the two fasteners 136 protrudes from the clamp ring body 134 toward the connection axis L and extends into the opening 135. Specifically, the two fasteners 136 are disposed at two free ends of the C-shaped clamp ring body 134, respectively, which correspond to the opening 135.

[0021] The rotating member 120 includes a first portion 124, engaging protrusions 128a and 128b, and a second portion 126. The second portion 126 is located above the first portion 124 in the gravity direction G. The rotating member 120 in this embodiment has a two-layer structure, but is not limited to this. The through-hole 122 penetrates the first portion 124 and the second portion 126. The number of engaging protrusions 128a, 128b is two, but is not limited to this. The engaging protrusions 128a, 128b are connected between the first portion 124 and the second portion 126.

[0022] 3 and 4A, clamp ring 130 is adapted to move toward rotating member 120 along connection axis L and to be connected to rotating member 120. The width of opening 135 of clamp ring body 134 in a direction perpendicular to connection axis L is smaller than width D5 of engagement protrusion 128a in a direction perpendicular to connection axis L.

[0023] When the clamp ring 130 and the rotating member 120 are assembled, the fastener 136 of the clamp ring 130 may abut against the engaging protrusion 128a. At this time, the engaging protrusions 128a, 128b are located on the connection axis L. The clamp ring 130 can receive a pressing force such that the engaging protrusion 128a opens the fastener 136. Next, the clamp ring 130 is slightly deformed, and the width of the deformed opening 135 becomes larger than the width D5 of the engaging protrusion 128a, so that the clamp ring 130 can move to the position shown in FIG. 3.

[0024] As the clamp ring 130 continues to receive the pressing force, the fastener 136 moves away from the engaging protrusion 128a, and the engaging protrusion 128a enters the position restriction space 132. The engaging protrusion 128a can press the two position restriction protrusions 138 to open the clamp ring 130. The clamp ring 130 deforms slightly and continues to move along the connection axis L until the engaging protrusion 128a is located at one end away from the fastener 136 (FIG. 4A).

[0025] As shown in FIG. 3, the width D5 of the engaging protrusion 128a is larger than the center distance D3 of the position regulation space 132 perpendicular to the connection axis L (Y-axis direction), so that the engaging protrusion 128a cannot be removed from the clamp ring 130 without applying force. Therefore, the clamp ring 130 and the rotating member 120 can be firmly connected. This allows the clamp ring 130 and the rotating member 120 to be completely assembled. As shown in FIG. 4B, the clamp ring 130 is located between the first part 124 and the second part 126. When the clamp ring 130 rotates, the clamp ring 130 can drive the rotating member 120 to rotate together.

[0026] As shown in FIG. 4B, the clamp ring 130 further includes an operating portion 137. The operating portion 137 is connected to the clamp ring body 134 and extends along the rotation axis R. The operating portion 137 and the fastener 136 (see FIG. 4A) are located at both ends of the clamp ring body 134. The second portion 126 of the rotating member 120 includes an inclined surface 127 facing the operating portion 137. When the clamp ring 130 is placed on or removed from the rotating member 120, the operating portion 137 can be pulled by a user to operate and move the clamp ring 130. The inclined surface 127 is arranged to make it easier for a user to pull the operating portion 137 with their fingers.

[0027] The structures of the clamp ring 130 and the rotating member 120 are not limited to this embodiment. For example, in another embodiment, the rotating member 120 may include only the first portion 124 and the engagement protrusions 128a, 128b, so that the rotating member 120 may have a single-layer structure. The position restriction protrusions 138 of the clamp ring 130 may be triangular in addition to being arc-shaped.

[0028] After the clamp ring 130 and the rotating member 120 are completely connected, the clamp ring 130 and the rotating member 120 may be placed on the base 110. As shown in FIG. 2, the base 110 has a mounting hole 116, which is connected to the receiving space S.

[0029] When the clamp ring 130 and the rotating member 120 are assembled to the base 110, the clamp ring 130 and the rotating member 120 can pass through the mounting hole 116 of the base 110 and move into the receiving space S. The base 110 further includes a hook 114. The hook 114 is located on one side of the mounting hole 116. The rotating member 120 can abut against the hook 114 and push the hook 114 away to enter the base 110. After the clamp ring 130, the rotating member 120 and the base 110 are fully assembled, the hook 114 is reset to prevent the clamp ring 130 and the rotating member 120 from coming off the base 110 in a situation where no force is applied. At this point, the clamp ring 130, the rotating member 120 and the base 110 are fully assembled.

[0030] The method of assembling the clamp ring 130, the rotating member 120, and the base 110 is not limited thereto. In other embodiments, the rotating member 120 can be placed in the base 110 first, and then the clamp ring 130 can be connected to the rotating member 120.

[0031] FIG. 5 is a schematic diagram of the clamp ring in FIG. 1 in a connected state. FIG. 6 is a schematic diagram of the clamp ring in FIG. 1 in an open state. The screw rod 140, the base 110, and the rotating member 120 in FIG. 5 and FIG. 6 are shown in perspective views, with some configurations omitted. Please refer to FIG. 2, FIG. 5, and FIG. 6. The screw rod 140 includes a head 142, a flat portion 144, and a helical portion 146. The flat portion 144 is connected between the helical portion 146 and the head 142, and the head 142 is fixed to the housing 300. The flat portion 144 and the helical portion 146 extend along the rotation axis R. The clamp ring 130 can move relatively to the base 110 and the rotating member 120, and the clamp ring 130 can be switched between a connected state P1 and an open state P2.

[0032] 5 and 6 are schematic views of a cross section C1 taken along a direction perpendicular to the rotation axis R of the flat portion 144 and a cross section C2 taken along a direction perpendicular to the rotation axis R of the end 147 of the spiral portion 146. As shown in FIGS. 5 and 6, the base 110 includes an opening 112. A diameter D1 of the opening 112 is larger than a diameter D2 of the through hole 122 of the rotating member 120. The diameter D2 of the through hole 122 is larger than a center distance D3 of the position restriction space 132. An outer diameter D4 of the spiral portion 146 is larger than the center distance D3 and smaller than the diameter D2 of the through hole 122.

[0033] FIG. 4B and FIG. 51, when the clamp ring 130 is in the connected state P1, the clamp ring 130 is completely pressed into the rotating member 120, and the engagement protrusions 128a, 128b of the rotating member 120 are located within the position restriction space 132 of the clamp ring 130. The position restriction space 132 and the through hole 122 are located on the rotation axis R. The cross section C2 of the helical portion 146 partially overlaps with the position restriction protrusion 138 and can structurally interfere with the clamp ring 130. Specifically, the helical portion 146 can press the clamp ring 130 (the position restriction protrusion 138), thereby allowing the clamp ring 130 and the rotating member 120 to rotate.

[0034] 3 and 6, when the clamp ring 130 moves along the connection axis L in a direction away from the base 110 and is in the open state P2, the fastener 136 can engage with the engagement protrusion 128a, and the position restriction space 132 is misaligned with respect to the through hole 122 and the rotation axis R. The clamp ring 130 is at least partially separated from the accommodation space S of the base 110, and the screw rod 140 can pass through the rotating member 120 and the base 110 without structurally interfering with the clamp ring 130.

[0035] Because the fasteners 136 of the clamp ring 130 engage with the engagement protrusions 128a, the clamp ring 130 remains connected to the rotating member 120 even when no external force is applied. This prevents a user from losing the clamp ring 130 and damaging the buffer assembly 100. In other embodiments, the clamp ring 130 may be completely separated from the rotating member 120 to completely separate the clamp ring 130 from the accommodation space S.

[0036] 7 to 9 are cross-sectional views showing the movement process of the screw rod of the buffer assembly of FIG. 1. The base 110 is omitted, and part of the structure of the clamp ring 130 is shown in broken lines. Please refer to FIGS. 7 to 9. When the housing 300 is assembled to the chassis 200, the screw rod 140 fixed to the housing 300 is aligned with the clamp ring 130 and the rotating member 120 along the rotation axis R. Since the rotation axis R is parallel to the gravity direction G, the housing 300 and the screw rod 140 can freely fall along the gravity direction G.

[0037] As shown in FIG. 7, the end 147 of the helical portion 146 of the screw rod 140 passes through the through hole 122 of the rotating member 120 until the end 147 abuts against the position restricting protrusion 138 .

[0038] The screw rod 140 continues to move downward from the position shown in FIG. 7. Then, the end 147 of the screw rod 140 presses the two position restriction protrusions 138. This causes the clamp ring 130 to rotate relative to the screw rod 140. The rotation of the clamp ring 130 rotates the rotating member 120. The clamp ring 130 and the rotating member 120 continue to rotate until the end 147 is misaligned with the position restriction protrusions 138, the end 147 no longer presses the position restriction protrusions 138, and the end 147 enters the position restriction space 132. At this time, the screw rod 140 moves from the position shown in FIG. 7 to the position shown in FIG. 8. The screw rod 140 passes through the position restriction space 132 and the through hole 122.

[0039] Next, the screw rod 140 continues to move downward, and the helical portion 146 continues to press the position restricting protrusion 138 of the clamp ring 130. This rotates the clamp ring 130 and the rotating member 120 until the housing 300 and the screw rod 140 move from the position shown in FIG. 8 to the position shown in FIG. 9 relative to the clamp ring 130 and the rotating member 120. As shown in FIG. 9, the flat portion 144 of the screw rod 140 passes through the clamp ring 130 and the rotating member 120, and the base 110 abuts against the head 142 of the screw rod 140 (see the enlarged view of FIG. 1). At this point, the assembly of the housing 300 and the chassis 200 is completed.

[0040] 5, the cross section C1 of the flat portion 144 extends in the X-axis direction. When the flat portion 144 passes through the clamp ring 130 and the rotating member 120, the flat portion 144 is at least partially located on the connection axis L. The flat portion 144 can restrict the rotation of the clamp ring 130 and the rotating member 120, and the flat portion 144 does not come into contact with the position restricting protrusion 138.

[0041] During the assembly process of the housing 300 and the chassis 200, the screw rod 140 needs to push the clamp ring 130 to move downward, so that the moving speed of the screw rod 140 (housing 300) can be slowed down to achieve the buffering effect. In addition, since the rotation axis R is parallel to the gravity direction G, the screw rod 140 is aligned with the base 110, the clamp ring 130 and the rotating member 120. This allows the screw rod 140 to fall freely by its own weight without applying external force, thereby improving the convenience of using the buffer assembly 100. The clamp ring 130 in this embodiment may be made of, but is not limited to, plastic so as to prevent the clamp ring 130 from generating debris due to collision during contact or rotation with the screw rod 140.

[0042] When housing 300 is removed from chassis 200, clamp ring 130 can move in a direction away from rotating member 120, and as a result, clamp ring 130 is in an open state P2. As shown in Figures 5 and 9, cross section C1 of flat portion 144 extends along the X-axis direction, and mounting hole 116 is also located on the X-axis, so that when flat portion 144 passes through position restriction space 132, operating portion 137 of clamp ring 130 corresponds to mounting hole 116 of base 110. Pulling operating portion 137 allows clamp ring 130 to move, and clamp ring 130 at least partially passes through mounting hole 116 and is in an open state P2 as shown in Figure 6.

[0043] The position restriction space 132 of the clamp ring 130 in the open state P2 is misaligned with respect to the screw rod 140 and the rotation axis R. Since there is no structural interference between the position restriction space 132 and the screw rod 140, and the outer diameter D4 (see FIG. 6) of the screw rod 140 is smaller than the diameter D2 of the through hole 122, the screw rod 140 can be separated from the base 110 and the rotating member 120 without interference. In this manner, the user can quickly remove the housing 300 from the chassis 200.

[0044] As can be seen, when the screw rod 140 is assembled to the base 110, the rotating member 120, and the clamp ring 130, the clamp ring 130 may be in a connected state P1 so that the buffer assembly 100 has a buffering function. When the screw rod 140 is separated from the base 110, the rotating member 120, and the clamp ring 130, the clamp ring 130 may be in an open state P2 so that the buffer assembly 100 does not have a buffering function. The screw rod 140 can be quickly removed from the base 110, the rotating member 120, and the clamp ring 130 to improve the efficiency of removing the buffer assembly 100.

[0045] In summary, the rotating member and the clamp ring of the buffer assembly of the present invention cooperate with the screw rod to achieve the buffer function during assembly. And the clamp ring can move relative to the rotating member to switch between a connected state and an open state, so that when the clamp ring is in the open state, the screw rod is out of alignment with the position control space, and the screw rod passes through the rotating member without contacting the clamp ring. Therefore, the purpose of quick removal can be achieved.

[0046] Although the present invention has been disclosed by the above embodiments, the present invention is not limited thereto. A person having ordinary knowledge in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope protected by the present invention is defined by the appended claims. [Industrial Applicability]

[0047] The assembly of the present invention can be applied to a buffer assembly to improve the buffering function during assembly. [Explanation of symbols]

[0048] C1, C2: Cross section D1, D2: Diameter D3: Center distance D4: Outer diameter D5: Width G: Gravity direction L: Connection axis P1: Connection status P2: Open state R: Rotation axis S: Containment space XYZ: Cartesian coordinates 100: Buffer assembly 110: Foundation 112: Opening 114: Hook 116: Mounting hole 120: Rotating member 122: Through hole 124: First Part 126: Second Part 127: Slope 128a, 128b: Engagement protrusion 130: Clamp ring 132: Location-Controlled Space 134: Clamp ring body 135: Opening 136: Fasteners 137: Operation section 138: Position control protrusion 140: Screw rod 142: Head 144: Flat area 146: Spiral part 147: Termination 200: Chassis 300: Case

Claims

1. A screw rod; The base and a rotating member rotatably disposed on the base along a rotation axis and including a through hole; a clamp ring that is detachably connected to the rotating member along a connection axis and is suitable for switching between a connected state with the rotating member and a released state from the rotating member, the clamp ring including a position restriction space and the rotation axis perpendicular to the connection axis; Equipped with When the clamp ring is in the connected state with the rotating member, the clamp ring is disposed on at least a portion of the rotating member, the position restriction space and the through hole are located on the rotation axis, and the screw rod is adapted to push and rotate the clamp ring, and the screw rod is adapted to pass through the position restriction space and the through hole; when the clamp ring is in the released state from the rotating member, at least a portion of the clamp ring is disposed outside the rotating member, the position restriction space is misaligned with the rotation axis, and the screw rod passes through the through hole. Buffer assembly.

2. The clamp ring includes a clamp ring body and two position restriction protrusions, the two position restriction protrusions protruding from the clamp ring body toward the connection axis, and the position restriction space is located at the center of the clamp ring body. The buffer assembly of claim 1 .

3. The position restriction space gradually expands from positions corresponding to the two position restriction protrusions toward both ends along the connection axis. The buffer assembly of claim 2 .

4. the rotation member includes an engagement protrusion, and a width of the engagement protrusion in a direction perpendicular to the connection axis is greater than a center distance of the position restriction space in a direction perpendicular to the connection axis; The buffer assembly of claim 1 .

5. an outer diameter of the screw rod is larger than a center distance of the position control space in a direction perpendicular to the connection axis, and the outer diameter is smaller than a diameter of the through hole of the rotating member; when the clamp ring is in the connected state, the clamp ring is suitable for being pushed and rotated by the screw rod, and the clamp ring drives and rotates the rotating member; The buffer assembly of claim 1 .

6. the rotating member includes a first portion, an engagement protrusion, and a second portion, the engagement protrusion is connected between the first portion and the second portion, the clamp ring is located between the first portion and the second portion, and the clamp ring is adapted to engage with the engagement protrusion such that the position restriction space is displaced relative to the rotation axis; The buffer assembly of claim 1 .

7. The screw rod includes a flat portion and a helical portion, the flat portion is connected to the helical portion, the flat portion and the helical portion extend along the rotation axis, and when the flat portion passes through the position restriction space, the flat portion is at least partially located on the connection axis.

7. The buffer assembly of claim 6.

8. The clamp ring further includes a clamp ring body and an operating portion connected to the clamp ring body, the operating portion extending along the rotation axis, the second portion of the rotating member including an inclined surface, the inclined surface facing the operating portion.

7. The buffer assembly of claim 6.

9. the base includes an accommodation space, the clamp ring and the rotating member are movably disposed within the accommodation space, and when the clamp ring is in the open state, the clamp ring is at least partially separated from the accommodation space. The buffer assembly of claim 1 .

10. The rotation axis is parallel to the direction of gravity. The buffer assembly of claim 1 .

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