Anti-rotation mechanism of telescopic assembly and seat

Abstract

The utility model discloses an anti-rotation mechanism and a seat of a telescopic component, the anti-rotation mechanism of the telescopic component and the telescopic component comprise a shell and an ejector rod, one end of the ejector rod is located in the shell, the ejector rod axially moves along the shell, the anti-rotation mechanism comprises a buckle component, the buckle component is clamped on the shell and the ejector rod, and the buckle component is connected with the shell and the ejector rod. The fixing device is used for radially fixing the shell and the ejector rod. According to the utility model, the buckle assembly is matched with the telescopic assembly, so that when rotation needs to be prevented, the buckle assembly is clamped on the telescopic assembly.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, specifically to an anti-rotation mechanism for a telescopic component and a seat. Background Technology

[0002] Many chairs have height-adjustable height functions, typically achieved through telescopic components such as gas springs or hydraulic rods. These components allow for both height adjustment and lateral rotation. When a user reclines, the uneven distribution of weight on the chair can cause it to rotate, which is particularly noticeable when lying down to rest.

[0003] Existing solutions to the rotation problem, such as Chinese patent application number 201720047213.9, are achieved through a positioning sleeve and positioning device with a certain radial positioning; Chinese utility model patent application number 201820634470.7 is achieved through a positioning pin and a track groove.

[0004] Both of the above examples are achieved by modifying the telescopic component itself. This method completely eliminates the telescopic component's ability to rotate. In everyday scenarios where rotation is required, such as in the office, the rotation of the chair can bring a lot of convenience. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-rotation mechanism for a telescopic component and a seat, which cooperates with the telescopic component through a buckle component. When it is necessary to prevent rotation, the buckle component can be snapped onto the telescopic component.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An anti-rotation mechanism for a telescopic assembly, the telescopic assembly including a housing and a top rod, one end of the top rod being located inside the housing, the top rod moving axially along the housing, the anti-rotation mechanism including a snap-fit ​​assembly, the snap-fit ​​assembly being snapped onto the housing and the top rod, for radially fixing the housing and the top rod.

[0008] Preferably, the buckle assembly includes a first buckle and a second buckle, the first buckle being snapped onto the housing, and the second buckle being snapped onto the top rod. The first buckle and the second buckle are fixedly connected, integrally formed, or detachably fixedly connected.

[0009] Preferably, the first buckle includes a first retaining ring and first connecting blocks disposed on both sides of the first retaining ring. The first retaining ring is fastened to the outside of the housing, and the two first connecting blocks are fixed together by a first screw. The second buckle includes a second retaining ring and second connecting blocks disposed on both sides of the second retaining ring. The second retaining ring is fastened to the outside of the top rod, and the two second connecting blocks are fixed together by a second screw. The first retaining ring and the second retaining ring are fixedly connected or integrally formed, or the buckle assembly further includes a connecting plate, the two ends of which are respectively inserted into the first screw between the two first connecting blocks and the second screw between the two second connecting blocks.

[0010] Preferably, the first latch includes a first left latch and a first right latch, one side of the first left latch and the first right latch are hinged together, and the other side of the first left latch and the first right latch are fixed by a first screw. A first retaining ring is formed between the first left latch and the first right latch to cooperate with the outer side of the housing. The second latch includes a second left latch and a second right latch, one side of the second left latch and the second right latch are hinged together, and the other side of the second left latch and the second right latch are fixed by a second screw. A second retaining ring is formed between the second left latch and the second right latch to cooperate with the outer side of the top rod. The first left latch and the second left latch are fixedly connected or integrally formed, and the first right latch and the second right latch are fixedly connected or integrally formed. Alternatively, the latch assembly further includes a connecting plate, the two ends of which are respectively inserted into the first screw and the second screw.

[0011] Preferably, the first and / or second buckles are provided with positioning elements, the positioning elements including positioning posts and positioning grooves, the positioning posts being disposed on the first left buckle and / or the second left buckle, and the positioning grooves adapted to the positioning posts being disposed on the corresponding first right buckle and / or the second right buckle.

[0012] Preferably, a rubber sleeve is provided between the first retaining ring and the housing, or / and between the second retaining ring and the top rod.

[0013] Preferably, one end of the first screw is threadedly connected to the first nut, and the other end of the first screw is hinged to a first handle; or / and, one end of the second screw is threadedly connected to the second nut, and the other end of the second screw is hinged to a second handle.

[0014] Preferably, a washer is also fitted onto the first screw and / or the second screw.

[0015] Preferably, the telescopic component is a pneumatic rod or a hydraulic rod.

[0016] Seat, including the anti-rotation mechanism of the aforementioned telescopic component.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In this invention, the snap-fit ​​assembly is attached to the housing and the top rod, thereby locking the housing and the top rod radially and preventing the top rod from rotating relative to the housing. The lifting function of the top rod is basically unaffected (only a slight external force is needed to overcome the friction between the snap-fit ​​and the top rod). It is suitable for anti-rotation scenarios such as lying down to rest. When the rotation function is needed, simply open the snap-fit ​​assembly, which is simple and convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the decomposed structure;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the middle snap fastener assembly;

[0022] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0023] Figure 5 for Figure 4 A schematic diagram of the decomposed structure;

[0024] Figure 6 for Figure 4 A schematic diagram of the structure of the left-center buckle;

[0025] Figure 7 for Figure 4 A schematic diagram of the right-side latch structure.

[0026] Wherein: 11. Housing; 12. Top rod; 21. Second buckle; 211. Second handle; 212. Pin; 213. Second screw; 214. Washer base; 215. Washer body; 216. Second buckle body; 217. Second nut; 22. First buckle; 23. Connecting plate; 30. Buckle assembly; 31. Left buckle; 311. First left retaining ring; 312. Second left retaining ring; 313. First mounting block; 3131. First mounting hole; 314. First rotating column. 3141, First rotating hole; 315, Second rotating column; 3151, Second rotating hole; 316, Positioning column; 32, Right snap fastener; 321, First right retaining ring; 322, Second right retaining ring; 323, Second mounting block; 3231, Second mounting hole; 324, Third rotating column; 3241, Third rotating hole; 325, Positioning groove; 33, Pin; 34, Screw; 35, Nut; 36, First rubber sleeve; 37, Second rubber sleeve; 38, Third rubber sleeve; 39, Fourth rubber sleeve. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Example 1

[0031] The telescopic assembly includes a housing and a push rod. One end of the push rod is located inside the housing, and the other end extends outside the housing. Taking a cylindrical housing as an example (other shapes are similar), the push rod can move axially along the housing and can also rotate around the housing. The telescopic assembly can be a pneumatic or hydraulic rod, or a device that provides support, buffering, or damping through a certain medium, or it can be a conventional telescopic rod assembly. In a preferred embodiment of this invention, a pneumatic rod commonly used in seat lifting functions is used as an example to specifically explain and describe its anti-rotation mechanism.

[0032] Please refer to Figure 1-3As shown, this utility model provides an anti-rotation mechanism for a telescopic component. The anti-rotation mechanism mainly consists of a snap-fit ​​assembly. One part of the snap-fit ​​assembly is snapped onto the outside of the housing 11 to fix the snap-fit ​​assembly to the housing 11. The other part of the snap-fit ​​assembly is snapped onto the outside of the top rod 12 to fix the snap-fit ​​assembly to the top rod 12. This achieves radial fixation of the housing 11 and the top rod 12, preventing the top rod 12 from rotating around the housing 11 and preventing lateral swaying caused by the top rod 12 extending too far out of the housing 11. The axial movement of the top rod 12 is basically unaffected, and only a slight increase in external force is needed to overcome the friction between the top rod 12 and the snap-fit ​​assembly.

[0033] In Embodiment 1, the buckle assembly includes a separate first buckle 22 and a second buckle 21. The structures of the first buckle 22 and the second buckle 21 are basically the same. Taking the second buckle 21 as an example, it may include a second buckle body 216 and an installation component for fixing to the top rod 12. The second buckle body 216 forms a second retaining ring with an opening. A second connecting block is integrally formed on the second retaining ring at the opening. The installation component includes a second screw 213 and a second nut 217 that cooperates with the second screw 213. During installation, the second retaining ring is put on the top rod 12, and one end of the second screw 213 passes through the through hole on the second connecting block and is locked by the second nut 217.

[0034] The first latch 22 and the second latch 21 are detachably fixed together by a connecting plate 23. One end of the connecting plate 23 passes through a first screw between two first connecting blocks on the first latch 22, and the other end of the connecting plate 23 passes through a second screw 213 between two second connecting blocks. Of course, in other embodiments, the first latch 22 and the second latch 21 can also be fixedly connected, for example, by welding both ends of the connecting plate to the first latch body and the second latch body 216, respectively.

[0035] Understandably, in order to save costs and improve the anti-rotation effect, the first buckle 22 is preferably installed on the upper side of the housing 11 near its upper end face, and the second buckle 21 is preferably installed on the top rod 12 near the upper end face of the housing 11.

[0036] In other embodiments, the structure of the first buckle 22 and the second buckle 21 can also be similar to that in Embodiment 2, that is, both of them use the left buckle and the right buckle to be hinged together to achieve the connection on one side, while the other side is still fixed by the mounting components.

[0037] To facilitate the release of the buckle assembly, a first handle and a second handle 211 can be hinged to the other end of the first screw and the second screw 213. Taking the structure of the second handle 211 as an example, a rotating hole is provided at the end of the second screw 213 away from the second nut 217. The near end of the second handle 211 is installed in the rotating hole through the pin 212 to achieve the hinge connection between the second handle 211 and the second screw 213.

[0038] When the distal end of the second handle 211 approaches the second latch 21, the second latch 21 is in a locked state; when the distal end of the second handle 211 moves away from the second latch 21, the second latch 21 is in a released state. A washer assembly is installed on the second screw 213 between the second handle 211 and the second connecting block. The washer assembly includes a washer base 214 and a washer body 215, with the washer body 215 located within the washer base 214. The rotation of the second handle 211 is achieved by compressing the washer assembly.

[0039] In other embodiments, in order to reduce the gap between the snap-fit ​​assembly and the corresponding housing 11 or push rod 12, a rubber sleeve may be provided between the first snap-fit ​​22 and the housing 11, and between the second snap-fit ​​21 and the push rod 12.

[0040] Example 2

[0041] Please refer to Figure 4-7 As shown, this is another anti-rotation mechanism for a telescopic component of the present invention. The latching component 30 includes an integrally formed first latch and a second latch, which can be divided into a left latch 31 and a right latch 32. The left latch 31 and the right latch 32 are hinged on one side, and locked on the other side by the cooperation of a screw 34 and a nut 35. The left latch 31 includes a first left retaining ring 311 and a second left retaining ring 312, which are connected. The right latch 32 includes a first right retaining ring 321 and a second right retaining ring 322, which are connected. The first left retaining ring 311 and the first right retaining ring 321 cooperate to form a first retaining ring, which is used to latch onto the housing 11. The second left retaining ring 312 and the second right retaining ring 322 cooperate to form a second retaining ring, which is used to latch onto the top rod 12.

[0042] The left and right retaining rings are rotatably connected by a pin 33 on one side. For example, a first rotating post 314 and a second rotating post 315 can be set at the upper and lower ends of the left retaining ring, and a third rotating post 324 can be set on the right retaining ring. During installation, the third rotating post 324 is located between the first rotating post 314 and the second rotating post 315. The first rotating post 314, the second rotating post 315 and the third rotating post 324 are respectively provided with a first rotating hole 3141, a second rotating hole 3151 and a third rotating hole 3241. The pin 33 passes through the first rotating hole 3141, the third rotating hole 3241 and the second rotating hole 3151 in sequence.

[0043] The left and right retaining rings are locked on the other side by screws 34 and nuts 35. For example, a first mounting block 313 (corresponding to the connecting block in Embodiment 1) can be provided on the other side of the left retaining ring, and a second mounting block 323 can be provided on the other side of the right retaining ring. A first mounting hole 3131 and a second mounting hole 3231 are provided at corresponding positions of the first and second connecting blocks. The screw 34 passes through the first mounting hole 3131 and the second mounting hole 3231 in sequence and then engages with the nut 35 threadedly. The number of screws 34 and nuts 35 can be set as needed. For example, a screw assembly can be installed at the middle of the corresponding position of the first retaining ring and at the middle of the corresponding position of the second retaining ring, or only one screw assembly can be installed at the middle of the first and second connecting blocks.

[0044] To facilitate the installation of the screw, the left and right latches can be aligned using positioning components. Specifically, a positioning post 316 is provided on the left latch, and a positioning groove 325 that mates with the positioning post 316 is provided on the right latch. Alternatively, a positioning groove and a positioning post can be provided on the left and right latches respectively.

[0045] In other embodiments, the one-piece molded first and second buckles can also adopt the structure of Embodiment 1, that is, the first and second buckles are molded as one piece, and the first and second buckles themselves are also one piece.

[0046] Similar to Embodiment 1, to save costs and improve the anti-rotation effect, the first retaining ring is preferably installed on the upper side of the housing 11 near its upper end face, and the second retaining ring is preferably installed on the top rod 12 near the upper end face of the housing 11. To reduce the gap between the buckling assembly 30 and the corresponding housing 11 or top rod 12, a first rubber sleeve 36, a second rubber sleeve 37, a third rubber sleeve 38, and a fourth rubber sleeve 39 can be respectively provided between the first left retaining ring 311 and the housing 11, between the second left retaining ring 312 and the top rod 12, between the first right retaining ring 321 and the housing 11, and between the second right retaining ring 322 and the top rod 12; or an integrally formed first rubber sleeve and a second rubber sleeve can be used, respectively provided between the first retaining ring and the housing 11 and between the second retaining ring and the top rod 12; or an integrally formed rubber sleeve can be used, provided between the buckling assembly 30, the housing 11, and the top rod 12.

[0047] The seat of this utility model includes the anti-rotation mechanism of the telescopic component mentioned above. The other structures of the seat are the same as those in the prior art and will not be described in detail here.

[0048] Finally, it should be noted that the above embodiments are only optional embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An anti-rotation mechanism for a telescoping assembly, the telescoping assembly comprising a housing and a plunger, an end of the plunger being located within the housing, the plunger being axially movable along the housing, characterized by, The anti-rotation mechanism includes a snap-fit ​​assembly, which snaps onto the housing and the top rod to radially fix the housing and the top rod. The buckle assembly includes a first buckle and a second buckle. The first buckle is snapped onto the housing, and the second buckle is snapped onto the top rod. The first buckle and the second buckle are fixedly connected, integrally formed, or detachably fixedly connected.

2. The anti-rotation mechanism of the telescopic assembly as described in claim 1, characterized in that, The first buckle includes a first retaining ring and first connecting blocks disposed on both sides of the first retaining ring. The first retaining ring is fastened to the outside of the housing, and the two first connecting blocks are fixed together by a first screw. The second buckle includes a second retaining ring and second connecting blocks disposed on both sides of the second retaining ring. The second retaining ring is fastened to the outside of the top rod, and the two second connecting blocks are fixed together by a second screw. The first retaining ring and the second retaining ring are fixedly connected or integrally formed, or the buckle assembly further includes a connecting plate, the two ends of which are respectively inserted into the first screw between the two first connecting blocks and the second screw between the two second connecting blocks.

3. The anti-rotation mechanism of the telescopic assembly as described in claim 1, characterized in that, The first latch includes a first left latch and a first right latch, with one side of the first left latch and the first right latch hinged together, and the other side of the first left latch and the first right latch fixed by a first screw. A first retaining ring is formed between the first left latch and the first right latch to cooperate with the outer side of the housing. The second latch includes a second left latch and a second right latch, with one side of the second left latch and the second right latch hinged together, and the other side of the second left latch and the second right latch fixed by a second screw. A second retaining ring is formed between the second left latch and the second right latch to cooperate with the outer side of the top rod. The first left latch and the second left latch are fixedly connected or integrally formed, and the first right latch and the second right latch are fixedly connected or integrally formed. Alternatively, the latch assembly may further include a connecting plate, with both ends of the connecting plate inserted into the first screw and the second screw, respectively.

4. The anti-rotation mechanism of the telescopic assembly as described in claim 3, characterized in that, The first and / or second buckle is provided with a positioning element, which includes a positioning post and a positioning groove. The positioning post is disposed on the first left buckle and / or the second left buckle, and the positioning groove adapted to the positioning post is disposed on the corresponding first right buckle and / or the second right buckle.

5. The anti-rotation mechanism of the telescopic assembly as described in claim 2, characterized in that, A rubber sleeve is provided between the first retaining ring and the housing, or / and between the second retaining ring and the top rod.

6. The anti-rotation mechanism of the telescopic assembly as described in claim 2, characterized in that, One end of the first screw is threadedly connected to the first nut, and the other end of the first screw is hinged to a first handle; or / and, one end of the second screw is threadedly connected to the second nut, and the other end of the second screw is hinged to a second handle.

7. The anti-rotation mechanism of the telescopic assembly as described in claim 6, characterized in that, A washer is also fitted onto the first screw and / or the second screw.

8. The anti-rotation mechanism of the telescopic assembly as described in claim 1, characterized in that, The telescopic component is a pneumatic rod or a hydraulic rod.

9. A seat, characterized in that, The anti-rotation mechanism includes the telescopic assembly as described in any one of claims 1-8.

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