Rotary article support

Abstract

The utility model discloses a rotating type article support which comprises a supporting part, a rotating part capable of being arranged on the supporting part in a rotating mode, a locking part used for allowing and limiting rotation of the rotating part, and a product connecting part which integrally rotates with the rotating part and is used for fixing articles. The locking part comprises a first meshing part arranged on the supporting part, a second meshing part arranged on the rotating part and an elastic part; when the elastic part is in a natural state, the first meshing part and the second meshing part are meshed to limit rotation of the rotating part and the product connecting part; when pressure is applied to the rotating part to enable the elastic part to be compressed, the first meshing part and the second meshing part are separated, and the rotating part and the product connecting part can rotate freely. When the pressing force of the rotating part is relieved, the first meshing part and the second meshing part are meshed again.

Description

Technical Field

[0001] This utility model relates to a rotating item holder, which is suitable for supporting various products. Background Technology

[0002] In industry, daily life, and various other fields, many items need to be fixed in specific positions as required during use. For example, to achieve lighting in a specific location or area, the position of the light source must be firmly held in place. However, some items also need to be rotated after installation to change their position or orientation.

[0003] Existing Korean Patent No. 10-1933018 discloses a movable lighting bracket, highlighting the bracket's inherent mobility. However, no prior art document proposes a solution allowing the supported object to rotate. The ability to rotate some supported objects would better meet practical needs; for example, a rotating lighting device could direct light to different locations. To address the flexibility of using the supported object, this invention proposes a rotating object bracket.

[0004] Patent Document 1: Korean Patent Registration No. 10-1933018 Summary of the Invention Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rotating item support that can realize the rotation of the supported item.

[0007] To achieve the purpose of this utility model, the following technical solution is adopted:

[0008] This utility model provides a rotating item holder, including a support part, a rotating part that can rotate on the support part, a locking part for allowing and restricting the rotation of the rotating part, and a product connecting part that rotates integrally with the rotating part and is used to fix the item; the locking part includes a first engagement part disposed on the support part, a second engagement part disposed on the rotating part, and an elastic part that allows the rotating part to move relative to the support part; in its natural state, the first and second engagement parts are engaged, restricting the rotation of the rotating part and the product connecting part; when pressure is applied to the rotating part to compress the elastic part, the first and second engagement parts separate, and the rotating part and the product connecting part can rotate freely; when the pressure on the rotating part is released, the first and second engagement parts re-engage.

[0009] A design, wherein the support part includes a support main body, and a "convex"-shaped through hole penetrating the support main body vertically is provided inside the support main body. The "convex"-shaped through hole is formed by coaxially connecting two cylindrical first and second through holes with different diameters. A first engaging part is provided on the stepped surface inside the "convex"-shaped through hole, and the first engaging part is an annular sawtooth structure protruding downward along the stepped surface of the "convex"-shaped through hole;

[0010] The rotating part is a "convex"-shaped cylindrical structure, which is composed of a cylindrical rotating main body and a bearing sleeve located at the lower part of the rotating main body and protruding along the circumferential surface of the rotating main body. A second engaging part is provided on the upper end surface of the bearing sleeve, and the second engaging part is an annular sawtooth structure protruding upward along the upper end surface of the bearing sleeve; An annular slot coaxial with both of them is further provided between the bearing sleeve and the rotating main body;

[0011] The locking part further includes a support cover fixed at the bottom of the support main body. The rotating part is inserted into the "convex"-shaped through hole of the support main body, wherein the upper part of the rotating main body extends out of the support main body, and the product connecting part is fixed at the end; There is a certain distance between the lower end of the rotating part and the support cover; Part of the elastic part is accommodated in the annular slot of the rotating part and the lower end is combined with the support cover. The rotating part can move up and down along the "convex"-shaped through hole inside the support main body, so that the first and second engaging parts are combined or separated, restricting or allowing the rotation of the rotating part and the product connecting part.

[0012] Another design, the support part is composed of a support main body and a "mountain"-shaped connecting part horizontally arranged on the support main body; The "mountain"-shaped connecting part includes a cylindrical rotating shaft cover with one end open and a rotating shaft accommodating part extending along the axis direction of the rotating shaft cover; The rotating shaft accommodating part is a cylindrical part with one end open, and a "convex"-shaped accommodating space extending from the port to the inside and smaller outside and larger inside is provided inside its open end. The "convex"-shaped accommodating space is formed by coaxially connecting two cylindrical third and fourth through holes with different diameters. The diameter of the third through hole is smaller than that of the fourth through hole, and a first engaging part is provided inside;

[0013] The rotating part is a "mountain"-shaped cylindrical structure, which is composed of a cylindrical rotating main body with one end open and a rotating shaft extending along the axis direction of the rotating main body; The open end of the rotating main body is inserted into the open end of the rotating shaft cover, and one end of the rotating shaft has a second engaging part, and the second engaging part can be inserted into the third or fourth through hole of the rotating shaft accommodating part. The second engaging part is a straight-tooth cylindrical gear structure, and the first engaging part can be sleeved around it and meshed with each other;

[0014] The elastic part is sleeved around the rotating shaft and is limited between the open ends of the rotating main body and the rotating shaft accommodating part; The rotating shaft can move horizontally along the "convex"-shaped accommodating space, so that the first and second engaging parts are combined or separated, restricting or allowing the rotation of the rotating part and the product connecting part.

[0015] The advantages of this utility model are as follows:

[0016] The rotating item holder provided by this utility model can ensure the rotation of items, thereby improving the usability of the items.

[0017] In addition, the item can be rotated with a simple one-button press via a rotating part, making the product more convenient to use.

[0018] Meanwhile, the locking part of this utility model restricts the rotation of the article by the toothed engagement of the first and second teeth, thereby preventing the article from rotating undesirably; and the toothed engagement of the locking part can be released simply by releasing the pressing pressure applied to the rotating part. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the rotating item holder according to the first embodiment of this utility model;

[0020] Figure 2 yes Figure 1 Exploded view;

[0021] Figure 3 yes Figure 1 The front view;

[0022] Figure 4 yes Figure 3 Cross-sectional view along the 4-4' direction;

[0023] Figure 5 yes Figure 4 Exploded view of the engagement relationship between the locking gears;

[0024] Figure 6 yes Figure 4 A schematic diagram of the locked gear in the disengaged state;

[0025] Figure 7 yes Figure 1 A schematic diagram of the rotating state of the connecting part of the product;

[0026] Figure 8 This is a schematic diagram of the rotating item holder according to the second embodiment of the present invention;

[0027] Figure 9 yes Figure 8 Exploded view;

[0028] Figure 10 yes Figure 8 The front view;

[0029] Figure 11 yes Figure 10 The cross-sectional view along the 11-11' direction shown;

[0030] Figure 12 yes Figure 11 The cross-sectional view along the 12-12' direction is shown;

[0031] Figure 13 yes Figure 11 A schematic diagram of the locked gear in the disengaged state;

[0032] Figure 14 yes Figure 10 A schematic diagram of the rotating state of the connecting part of the product;

[0033] Figure label:

[0034] 1000 utility model rotating item holders

[0035] 100: Support section

[0036] 110: Supporting Body

[0037] 111: Rotating Shaft Cover

[0038] 112: Rotary shaft housing

[0039] 120: First through hole; 130: Second through hole

[0040] 120': Third through hole; 130': Fourth through hole

[0041] 131: First tooth profile forming surface

[0042] 200: Rotating part

[0043] 210: Rotating Main Body

[0044] 211: Support shaft

[0045] 212: Insert axis

[0046] 220: Bearing sleeve

[0047] 221: Second tooth profile forming surface

[0048] 300: Locking section

[0049] 310: First meshing part; 320: Second meshing part

[0050] 330: Elastic part

[0051] 340: Support cover

[0052] 400: Product Connection Department

[0053] 410: Connecting Main Body

[0054] 420: Product fixing port. Detailed Implementation

[0055] Before providing a detailed description of the implementation of this utility model, the specific details required for its implementation are included in the embodiments and figures described below. Furthermore, the same reference numerals used in this specification refer to the same components. To facilitate the explanation of the product's structure and the indication of the relative positions of components, the specification uses terms indicating orientation, such as "up," "down," "left," "right," "inner," and "outer." These directional terms are limited to indicating the relative positions of components and do not limit the product's structure or its orientation.

[0056] First Embodiment

[0057] Figure 1 This is a schematic diagram of the rotating item holder according to the first embodiment of this utility model; Figure 2 yes Figure 1 Exploded view; Figure 3 yes Figure 1 The front view; Figure 4 yes Figure 3 The cross-sectional view along the 4-4' direction is shown. Figures 1 to 4 As shown, in the first embodiment of this utility model, the rotating item holder 1000 includes a support part 100, a rotating part 200, a locking part 300, and a product connecting part 400.

[0058] The product connection part 400 can rotate when it is engaged with the support part 100 via the rotating part 200. Thus, an item (not shown) fixed to the product connection part 400 can be freely rotated to a suitable position via the product connection part 400 according to its intended use. Here, the item (not shown) can be a lighting device or other various items.

[0059] The support 100 can be installed at the location where the item (not shown) is used.

[0060] The support portion 100 includes a support body 110. The support body 110 has an internal "U"-shaped through hole penetrating vertically through it. This "U"-shaped through hole is formed by two cylindrical through holes 120 and 130 of different diameters, coaxially arranged and connected vertically. The diameter of the second through hole 130 is larger than that of the first through hole 120. The stepped surface inside the "U"-shaped through hole is a first tooth-shaped forming surface 131.

[0061] A stepped surface is formed between the first through hole 120 and the second through hole 130. That is, the first tooth-shaped forming surface 131 is located at the junction of the inner walls of the first and second through holes 120 and 130. The support body 110 can be installed and removed from the position where the article (not shown) is used.

[0062] The rotating part 200 is a "convex"-shaped cylindrical structure, which is composed of a cylindrical rotating main body 210 and a bearing sleeve 220 located at the lower part of the rotating main body and protruding outward along the circumference of the rotating main body 210. The upper end surface of the bearing sleeve is the second tooth-shaped forming surface 221. The bearing sleeve is flush with the lower end of the rotating main body, and an annular slot with an open lower end is provided between them.

[0063] Part of the rotating main body 210 is located inside the first and second through holes 120 and 130. The upper part of the rotating main body 210 protrudes from the upper end surface of the support part 100. The outer diameter of the rotating main body 210 matches the inner diameter of the first through hole 120. Here, the rotating main body 210 and the first and second through holes 120 and 130 are coaxially arranged.

[0064] The outer diameter of the bearing sleeve 220 matches the inner diameter of the second through hole 130.

[0065] See Figures 5 to 7 , where Figure 5 is Figure 4 the exploded view of the engagement relationship between the locking gear parts in Figure 6 is Figure 4 the schematic diagram of the disengaged state of the locking gear parts in Figure 7 is Figure 1 the schematic diagram of the rotating state of the product connection part in

[0066] As Figures 5 to 7 shown, the locking part 300 includes a first engaging part 310, a second engaging part (320), an elastic part 330 and a support cover 340. The support cover 340 is fixed to the bottom of the support main body 110.

[0067] The first engaging part 310 has a plurality of tooth-shaped structures protruding along the first tooth-shaped forming surface 131. At the same time, each tooth shape on the first engaging part 310 is arranged parallel to the axis of the first through hole 120. That is, each tooth shape on the first engaging part 310 protrudes downward from the bottom of the first through hole 120. The structure of the first engaging part 310 is an annular sawtooth structure protruding downward along the stepped surface of the "convex"-shaped through hole.

[0068] The second engaging part 320 has a plurality of tooth-shaped structures protruding along the upper end surface of the bearing sleeve, that is, the second tooth-shaped forming surface 221. Each tooth shape on the second engaging part 320 is arranged to be able to mesh with the tooth shape on the first engaging part 310. The structure of the second engaging part 320 is an annular sawtooth structure protruding upward along the upper end surface of the bearing sleeve.

[0069] When the first and second engaging parts 310 and 320 are engaged, the rotation of the second engaging part 320 and its integral rotating part 200 will be restricted. When the first and second engaging parts 310 and 320 are separated and disengaged, the rotation of the rotating part 200 will be allowed.

[0070] An annular slot, coaxial with both the bearing sleeve and the rotating body, is provided between them. The elastic part 330 is partially accommodated in the annular slot, and its lower end is connected to a support cover 340 located below the rotating part 200 and spaced at a certain distance. The elastic part 330 can be compressed and released as the rotating body 210 rises and falls. Here, the elastic part 330 can be a compression spring structure.

[0071] Furthermore, ideally, the elastic part 330 can be installed in a compressed state. Therefore, the elastic restoring force of the elastic part 330 will cause the second meshing part 320 to engage with the first meshing part 310, thereby preventing the rotating part 200 from rotating undesirably.

[0072] The product connection part 400 includes a connection body 410 and a product fixing port 420.

[0073] The connecting body 410 surrounds and is fixed to the upper end of the rotating body 210. The lower part of the rotating body 210 is located inside the supporting body 110. There is a certain distance between the connecting body 410 and the supporting body 110 to allow the rotating part to move up and down.

[0074] In addition, a product fixing port 420 is provided on the connecting body 410 for fixing items not shown in the figure.

[0075] At this time, the axis of the product fixing port 420 is perpendicular to the axis of the rotating body 210. Alternatively, the axis of the product fixing port 420 and the axis of the rotating body 210 can intersect at an angle of less than 90 degrees. Furthermore, the axis of the product fixing port 420 and the axis of the rotating part 200 can be coaxial or parallel.

[0076] refer to Figure 4 When no external force is applied to the product connecting part 400, the first and second meshing parts 310 and 320 will remain engaged. At this time, the product connecting part 400 and the rotating part 200 cannot rotate.

[0077] like Figure 4 and Figure 6 As shown, when the product connecting part 400 applies pressure to the support body 110, the rotating part 200 will descend towards the compression elastic part 330. At the same time, the second meshing part 320 separates from the first meshing part 310, the locking part 300 releases the rotation restriction on the rotating part 200, and the rotating part 200 and the product connecting part 400 can rotate freely.

[0078] like Figure 6 and Figure 4As shown, when the pressure applied to the product connection part 400 and the rotating part 200 is released, the elastic restoring force of the elastic part 330 will cause the second meshing part 320 to engage with the first meshing part 310. Therefore, the rotation of the rotating part 200 and the product connection part 400 will be restricted again.

[0079] The user can press the product connector 400 toward the support 100 and then rotate the product connector 400 to the target position. When the pressure applied to the product connector 400 is released, the product connector 400 will maintain its rotated target position.

[0080] Furthermore, the minimum rotation distance of the rotating part 200 and the product connecting part 400 can be set according to the tooth shape and size specifications of the first and second meshing parts 310 and 320.

[0081] Second Embodiment

[0082] See the second embodiment. Figures 8 to 14 .in, Figure 8 This is a schematic diagram of a rotating item holder according to the second embodiment of this utility model. Figure 9 yes Figure 8 The exploded diagram. Figure 10 yes Figure 8 The front view. Figure 11 yes Figure 10 The cross-sectional view along the 11-11' direction is shown.

[0083] like Figures 8 to 11 As shown, the rotating item holder of the second embodiment of the present invention includes a support part 100, a rotating part 200, a locking part 300 and a product connecting part 400.

[0084] The support 100 consists of a support body 110 and a "mountain" shaped connecting part horizontally arranged on the support body; the "mountain" shaped connecting part includes a cylindrical rotating shaft cover 111 with one end open and a rotating shaft receiving part 112 extending along the axis of the rotating shaft cover.

[0085] The rotating shaft receiving part 112 is a cylindrical part with one open end. The inside of the open end has a "convex" shaped receiving space that extends from the port to the inside and is smaller on the outside and larger on the inside. The "convex" shaped receiving space is formed by two cylindrical third and fourth through holes 120' and 130' with different diameters connected horizontally on the same axis. The diameter of the third through hole 120' is smaller than that of the fourth through hole 130'. The inside of the third through hole 120' has a first meshing part 310.

[0086] The support body 110 is designed to be detachable from the location where the item (not shown) is used. The rotating shaft cover 111 is arranged to intersect the axis of the support body 110.

[0087] The rotating part 200 has a "mountain"-shaped cylindrical structure, consisting of a cylindrical rotating body 210 open at one end and a rotating shaft extending along the axis of the rotating body. The rotating body 210 is a cylindrical component open at one end, and the open end of the rotating body 210 is inserted into the open end of the rotating shaft cover 111. A rotating shaft is also provided in the center of the interior of the rotating body 210. One end of the rotating shaft has a second meshing part 320, which can be inserted into the third or fourth through hole inside the rotating shaft receiving part 112. The second meshing part 320 is a spur gear structure, and the first meshing part 310 can be fitted around it and mesh with it. The second meshing part 320 can move horizontally along the "convex"-shaped receiving space, and the second meshing part 320 on the rotating shaft and the first meshing part 310 in the "convex"-shaped receiving space can be engaged or disengaged.

[0088] Preferably, the open end of the rotating body 210 is inserted into the rotating shaft cover 111, and the outer diameter of the rotating body 210 matches the inner diameter of the rotating shaft cover 111.

[0089] The rotating shaft receiving portion 112 extends outward from the open end of the rotating shaft cover, or the rotating shaft extends outward from the open end of the rotating body.

[0090] The rotating shaft consists of a support shaft 211 and an insertion shaft 212. The support shaft 211 is a structure protruding from the interior of the rotating body 210 and is coaxially arranged with the rotating body 210. The insertion shaft 212 extends coaxially from the end of the support shaft 211. The outer diameter of the insertion shaft 212 can be smaller than the outer diameter of the support shaft 211. The outer diameter of the insertion shaft 212 matches the inner diameter of the third through hole 120'.

[0091] Furthermore, at least part of the end of the insertion shaft 212 can be accommodated inside the third and fourth through holes (120', 130'). The insertion shaft 212 can move horizontally along the third and fourth through holes 120', 130'.

[0092] In addition, a separate fixing component 213 can be provided, which can be coaxially arranged with the rotating shaft cover 111, the rotating shaft receiving part 112 and the rotating part 200. The fixing component 213 can pass through the rotating shaft cover 111 and the rotating shaft receiving part 112 and extend into the rotating shaft of the rotating part 200.

[0093] refer to Figures 12 to 14 ,in Figure 12 yes Figure 11 The cross-sectional view shown in the 12-12' direction. Figure 13 yes Figure 11 A schematic diagram of the locked gear in the disengaged state. Figure 14 yes Figure 10 A schematic diagram of the rotating state of the connecting part of the product.

[0094] like Figures 12 to 14 As shown, the locking part 300 includes a first engagement part 310, a second engagement part 320, and an elastic part 330.

[0095] The first engagement portion 310 is formed circumferentially along the inner wall surface of the third through hole 120', and each tooth of the first engagement portion 310 protrudes along the diameter direction of the third through hole 120'.

[0096] The second engagement portion 320 is formed along the outer peripheral surface of the insertion shaft 212. Furthermore, the second engagement portion 320 is engaged with the first engagement portion 310. At this time, when the first and second engagement portions 310 and 320 are engaged with each other, the rotation of the second engagement portion 320 and its integral rotating portion 200 will be restricted.

[0097] The elastic part 330 covers the periphery of the rotating shaft and is limited between the open end of the rotating body and the rotating shaft receiving part, that is, the two ends of the elastic part 330 are in contact with the end faces of the rotating body 210 and the rotating shaft receiving part 112, respectively.

[0098] The product connection part 400 includes a connection body 410 and a product fixing port 420. The connection body 410 is connected to the rotating part 200, and the axes of the connection body 410 and the rotating part 200 may intersect. Furthermore, the product fixing port 420 is formed through the connection body and opens at the end of the connection body 410. Additionally, the product fixing port 420 can fix items not shown.

[0099] refer to Figure 11 When the first and second meshing parts 310 and 320 are engaged, the rotation of the rotating part 200 and the product connecting part 400 will be restricted.

[0100] On the other hand, such as Figure 11 and Figure 13 As shown, when the product connecting part 400 and the rotating part 200 move towards the rotating shaft cover 111, the engagement of the first and second meshing parts 310 and 320 will be released. Therefore, the rotational interference caused by the tooth meshing will be eliminated, and the rotating part 200 and the product connecting part 400 will be able to rotate freely. At the same time, the movement of the product connecting part 400 and the rotating part 200 will compress the elastic part 330. At this time, the second meshing part 320 will be accommodated in the fourth through hole 130', and the product connecting part 400 can rotate to a predetermined position.

[0101] Then, as Figure 13 and Figure 11As shown, when the pressure applied to the product connecting part 400 and the rotating part 200 is released, the elastic restoring force of the elastic part 330 will cause the first and second meshing parts 310 and 320 to re-engage, thereby restricting the rotation of the rotating part 200 and the product connecting part 400. In this way, the product connecting part 400 will maintain its rotated state.

[0102] In both the first and second embodiments of this utility model, the compression and elastic recovery of the elastic component are used to allow and restrict the rotation of the rotating part and the product connection part.

[0103] As described above, the main technical concept of this utility model is to provide a rotating item holder. Furthermore, the embodiments disclosed in this utility model are only partial embodiments. Those skilled in the art can make various substitutions of the same or equivalent technical means for the technical concept of this utility model. The scope of protection of this utility model should be determined according to the claims. The scope of protection of this utility model also applies to possible derived equivalent embodiments. All technical solutions obtained by using the same or equivalent technical means are within the scope of protection of the claims of this utility model.

Claims

1. A rotating item holder, characterized in that, It includes a support part, a rotating part that can rotate on the support part, a locking part for allowing and restricting the rotation of the rotating part, and a product connecting part that rotates integrally with the rotating part and is used for fixing an item; the locking part includes a first engaging part provided on the support part, a second engaging part provided on the rotating part, and an elastic part for enabling the rotating part to move relative to the support part; in the natural state of the elastic part, the first and second engaging parts are engaged to restrict the rotation of the rotating part and the product connecting part; when a pressure is applied to the rotating part to compress the elastic part, the first and second engaging parts are separated, and the rotating part and the product connecting part can rotate freely; when the pressure applied to the rotating part is released, the first and second engaging parts are engaged again.

2. The rotating item holder according to claim 1, characterized in that, The support part includes a support main body, and a "convex"-shaped through hole penetrating the support main body vertically is provided inside the support main body. The "convex"-shaped through hole is composed of two coaxial cylindrical first and second through holes with different diameters. An annular sawtooth structure protruding downward along the stepped surface of the "convex"-shaped through hole is provided on the stepped surface inside the "convex"-shaped through hole, and the first engaging part is such an annular sawtooth structure. The rotating part is a "convex"-shaped cylindrical structure, which is composed of a cylindrical rotating main body and a bearing sleeve located at the lower part of the rotating main body and protruding along the circumferential surface of the rotating main body. A second engaging part is provided on the upper end surface of the bearing sleeve, and the second engaging part is an annular sawtooth structure protruding upward along the upper end surface of the bearing sleeve; an annular slot coaxial with both of them is further provided between the bearing sleeve and the rotating main body. The locking part further includes a support cover fixed to the bottom of the support main body. The rotating part is inserted into the "convex"-shaped through hole of the support main body, wherein the upper part of the rotating main body extends out of the support main body, and a product connecting part is fixed to the end; there is a certain distance between the lower end of the rotating part and the support cover; a part of the elastic part is accommodated in the annular slot of the rotating part and is combined with the support cover at the lower end. The rotating part can move up and down along the "convex"-shaped through hole inside the support main body to combine or separate the first and second engaging parts, thereby restricting or allowing the rotation of the rotating part and the product connecting part.

3. The rotating item holder according to claim 1, characterized in that, The support part is composed of a support main body and a "mountain"-shaped connecting part horizontally provided on the support main body; the "mountain"-shaped connecting part includes a cylindrical rotating shaft cover with one end open and a rotating shaft accommodating part extending along the axis direction of the rotating shaft cover; the rotating shaft accommodating part is a cylindrical part with one end open, and a "convex"-shaped accommodating space extending from the port to the inside and smaller outside and larger inside is provided inside the open end. The "convex"-shaped accommodating space is composed of two coaxial cylindrical third and fourth through holes with different diameters. The diameter of the third through hole is smaller than that of the fourth through hole, and a first engaging part is provided inside. The rotating part is a "mountain"-shaped cylindrical structure, which is composed of a cylindrical rotating main body with one end open and a rotating shaft extending along the axis direction of the rotating main body; the open end of the rotating main body is inserted into the open end of the rotating shaft cover, and a second engaging part is provided at one end of the rotating shaft. The second engaging part can be inserted into the third or fourth through hole of the rotating shaft accommodating part. The second engaging part is a straight-tooth cylindrical gear structure, and the first engaging part can be sleeved around it and engaged with each other. The elastic part is sleeved around the rotating shaft and is limited between the open end of the rotating body and the rotating shaft receiving part; the rotating shaft can move horizontally along the "convex" shaped receiving space, so that the first and second meshing parts can engage or disengage, restricting or allowing the rotation of the rotating part and the product connection part.

Images