Locking mechanism for rotation position of seat lifter

Abstract

The utility model discloses a seat lifter rotation position locking mechanism which comprises a seat leg and a seat, a lifter for controlling the height of the seat is arranged on the seat leg, the locking mechanism comprises a supporting bottom piece, a sleeve piece, an adjusting bottom piece and a locking piece, the supporting bottom piece is fixed on the outer side of the lifter, the supporting bottom piece is matched with the sleeve piece through a directional structure, and the adjusting bottom piece is fixed on the supporting bottom piece. The adjusting bottom piece is fixed at the bottom of the chair seat, the top of the sleeve piece is arranged in the adjusting bottom piece, the locking piece is arranged on the adjusting bottom piece, and the locking piece and the top of the sleeve piece form locking of a horizontal plane rotating position; compared with the existing seat which can only realize one function of lifting or horizontal rotation position locking, the lifting and horizontal rotation position locking device ingeniously integrates the lifting and horizontal rotation position locking functions, solves the problem of single function of the existing seat, greatly improves the convenience and flexibility of the use of the seat, and brings more comfortable and personalized use experience for users.

Description

Technical Field

[0001] This utility model belongs to the field of seat technology, and in particular relates to a seat lift rotation position locking mechanism. Background Technology

[0002] In modern office and living settings, the comfort and functionality of chairs are receiving increasing attention. As people's pursuit of user experience continues to improve, the adjustability of chairs has become a key feature.

[0003] Traditional chairs have significant limitations in their functional design. On the one hand, many height-adjustable chairs, when implementing the height adjustment function, have a structural design that makes it difficult to lock the chair in a horizontal position. After the user adjusts the chair height, it is often impossible to fix the chair in a horizontal position. This causes great inconvenience to users in scenarios that require precise positioning of the chair, such as meetings or operating specific equipment. For example, in some office areas, employees need to frequently turn around to communicate with colleagues. When the chair height is appropriate but the horizontal rotation position cannot be locked, the chair will rotate with each turn, causing employees to constantly adjust their posture and distracting their work attention.

[0004] On the other hand, although some chairs have a horizontal position locking function, they encounter serious interference when adjusting the height. The locking structure of these chairs is not designed to fully consider the coordination between the lifting and horizontal rotation functions. Once the horizontal position is locked, the operation of the lifting mechanism will be hindered, and the height adjustment cannot be achieved smoothly. For example, some professional drawing chairs may require designers to adjust the chair height according to different drawing angles and personal habits during the drawing process. However, due to the interference of the horizontal locking structure on the lifting, designers have to first release the horizontal lock, adjust the height, and then relock the horizontal position, which is cumbersome and affects work efficiency.

[0005] Therefore, developing a seat lift rotation position locking mechanism that can achieve convenient height adjustment and precise locking at any horizontal rotation position, while ensuring that the two functions do not interfere with each other, has become an urgent task to solve the current functional defects of seats and meet the diverse needs of users. Utility Model Content

[0006] The purpose of this invention is to provide a seat lift rotation position locking mechanism to solve the problem that existing seats are difficult to lock in the horizontal rotation position when they are adjustable, or that the height adjustment is interfered with when they have a horizontal position locking function.

[0007] The present invention achieves the above objectives through the following technical solution: a seat lift rotation position locking mechanism, comprising a chair leg and a seat, wherein a lifter for controlling the height of the seat is provided on the chair leg, and the locking mechanism comprises a support base, a kit, an adjusting base and a locking component;

[0008] The supporting base is fixed to the outside of the lifting device;

[0009] The supporting base and the kit are engaged by an oriented structure to achieve vertical displacement;

[0010] The adjusting base is fixed to the bottom of the chair seat, and the top of the kit is placed inside it;

[0011] The locking element is disposed on the adjusting base, and the locking element and the top of the kit form a horizontal rotational locking position.

[0012] Furthermore, the support base is provided with several sets of guide protrusions, and the kit is provided with guide grooves corresponding to the positions of the guide protrusions.

[0013] Furthermore, the bottom of the support base is provided with a locking device, the size of which is adapted to the chair leg to form a fixed position.

[0014] Furthermore, a connecting plate is provided at the bottom of the supporting base, and the connecting plate has several threaded holes. The connecting plate is fixed to the chair leg by bolts passing through the threaded holes.

[0015] Furthermore, the inner diameter of the support base is adapted to the outer diameter of the elevator, and the support base is fixed to the elevator by being sleeved.

[0016] Furthermore, the top of the kit is provided with an annular toothed disc, and the locking component includes a drive rod rotatably mounted on the side wall of the adjusting base. One end of the drive rod extends into the adjusting base and is provided with a first locking protrusion. The locking protrusion abuts against the tooth groove of the annular toothed disc, and the other end of the drive rod is provided with a rotating handle.

[0017] Furthermore, the top of the kit is provided with the annular toothed disc, and the locking member includes two sets of guide plates disposed opposite to each other within the adjusting base. A pull plate is provided between the two sets of guide plates, and a return spring is provided between the pull plate and the inner wall of the adjusting base. A second locking protrusion is provided on the pull plate, and the second locking protrusion abuts against the tooth groove of the annular toothed disc. A pull rod is provided through the adjusting base on the pull plate, and a pull handle is provided at the end of the pull rod.

[0018] Beneficial effects: This utility model has a reasonable design, simple and stable structure, and strong practicality, and has the following beneficial effects:

[0019] 1. Functional Integration and Convenience: This utility model perfectly integrates the lifting function of the seat with the horizontal rotation position locking function. Users can easily adjust the seat height through the lifting device to adapt to different usage scenarios, such as office, study or leisure. At the same time, the locking device can be used to securely lock the seat at any horizontal rotation position, which solves the limitations of traditional seats in terms of functional implementation, greatly improves the convenience of seat use, and meets the diverse needs of users. For example, in a meeting scenario, participants can flexibly adjust the seat height and lock the horizontal position to maintain focus and avoid interference caused by seat movement.

[0020] 2. Structural stability and smoothness: The support base and the kit cooperate through a directional structure to ensure that the kit can slide smoothly up and down along the support base, realizing the raising and lowering of the seat, reducing shaking and offset, and providing users with a more comfortable and stable user experience. At the same time, it can also ensure that the horizontal rotation position lock will not rotate further from this part.

[0021] 3. Installation Flexibility and Versatility: Multiple fixing methods are provided between the support base and the chair legs. By setting clips that are compatible with the specifications of the chair legs, the support base and the chair legs can be quickly and easily fixed together. Alternatively, by using the connecting plate and the threaded holes on it, bolts can be passed through the threaded holes to fix it to the chair legs. This method is suitable for chair legs of different types and structures. The support base can also be fixed to the lifting device by fitting it in place. This method has low construction cost and the diversified fixing methods increase the flexibility of the mechanism during installation. The most suitable fixing scheme can be selected according to actual production needs and different seat designs, which improves the versatility and adaptability of the product.

[0022] 4. Diverse Operations and User-Friendliness: The design of the locking mechanism offers multiple operation methods, catering to different user habits and preferences. Whether you prefer rotating or pulling operation, you can easily get started, further enhancing the product's user-friendliness and market competitiveness. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the mating structure at the adjusting base of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0026] Figure 4 This is a structural schematic diagram of Embodiment 3 of the present invention;

[0027] Figure 5This is a structural schematic diagram of Embodiment 4 of the present utility model.

[0028] In the diagram: 1-chair leg, 2-seat, 3-lifting mechanism, 4-support base, 5-setup, 6-adjustable base, 7-locking mechanism;

[0029] 401-Guide protrusion, 402-Clip, 403-Connecting plate, 404-Threaded hole, 501-Guide groove, 502-Annular gear, 701-Drive rod, 702-First locking protrusion, 703-Rotating handle, 704-Guide plate, 705-Pull-out plate, 706-Reset spring, 707-Second locking protrusion, 708-Pull-out rod, 709-Pull handle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Example 1:

[0032] Combination Figure 1-2The illustrated seat height adjustment mechanism includes a chair leg 1 and a seat 2. The chair leg 1 serves as the support base, on which a height adjuster 3 is mounted for precise control of the seat 2's height. This height adjuster 3 can easily adjust the seat 2's height vertically according to the user's different needs, whether raising it to fit a higher desktop or lowering it for a relaxed sitting posture, all adjustments can be made stably and smoothly. The preferred design for the height adjuster 3 is a gas spring, which offers advantages such as rapid adjustment response and precise adjustment position. A locking mechanism is provided between the seat 2 and the height adjuster 3. The locking mechanism includes a support base 4, a kit 5, an adjustment base 6, and a locking element 7. The support base 4 is fixed to the outside of the height adjuster 3. The material of the support base 4 is selected... Using high-strength, wear-resistant metal materials, its function is to provide a stable path for subsequent components. The support base 4 and the kit 5 cooperate through an oriented structure to form vertical displacement. There are two different placement methods for the kit 5 and the support base 4 to meet diverse design requirements and application scenarios. The cooperation design of the kit 5 and the support base 4 is ingenious, allowing the kit 5 to be placed on either the outside or the inside of the support base 4, while ensuring vertical displacement function in both cases. When the kit 5 is placed on the outside of the support base 4, the support base 4 plays a key guiding role. Its outer surface is carefully set with several sets of guide protrusions 401 along the vertical direction. These guide protrusions 401 are regularly arranged and have precise size and shape design to ensure uniform spacing and height. To ensure consistent height, correspondingly, the inner surface of the kit 5 has a guide groove 501 machined at a position precisely corresponding to the guide protrusion 401. The width, depth, and length of the guide groove 501 are precisely matched to the guide protrusion 401. During seat height adjustment, the kit 5, thanks to the tight cooperation between the guide groove 501 and the guide protrusion 401 on the support base 4, can smoothly achieve relative vertical displacement, providing stable and reliable guiding support for seat height adjustment. When the kit 5 needs to be placed inside the support base 4, only the positions of the guide protrusion 401 and the guide groove 501 need to be adjusted accordingly. At this time, the inner surface of the support base 4 becomes the part where the guide structure is set, and the guide protrusion 401, which was originally on the outer surface, is set inside the guide groove 501. Furthermore, maintaining a regular arrangement and precise dimensions, correspondingly, the outer surface of the kit 5 has a guide groove 501 at the position corresponding to the guide protrusion 401 on the inner side of the support base 4. This interchangeable position design allows the kit 5 to still achieve relative vertical displacement through the cooperation of the guide groove 501 and the guide protrusion 401 when it is inside the support base 4. This meets the usage requirements of the seat lift rotation position locking mechanism in different design scenarios, assisting the lift 3 in completing the height adjustment of the seat 2, and also providing the necessary conditions for the seat 2 to avoid spinning during the rotation locking process on the horizontal plane. The adjusting base 6 is fixed to the bottom of the seat 2, and the interior of the adjusting base 6 is provided with a cavity. The top of the kit 5 is placed inside it, and the locking member 7 is set on the adjusting base 6.The locking element 7 and the top of the kit 5 form a horizontal rotational lock. When the user needs to fix the orientation of the seat 2, simply operate the locking element 7 to make it engage tightly with the top of the kit 5, thus stably fixing the seat 2 in the current horizontal rotational position. This prevents the seat 2 from rotating freely due to accidental contact or body movements, providing the user with stable and reliable posture support.

[0033] In this embodiment, a locking piece 402 is provided at the bottom of the support base 4. The locking piece 402 is precisely designed and measured in terms of size and specifications, and is highly compatible with the corresponding part of the chair leg 1. Through the ingenious snap-fit ​​structure design, it can be quickly and firmly engaged with the chair leg 1. During installation, simply align the locking piece 402 with the preset slot or matching part on the chair leg 1, and gently press or push it. The locking piece 402 can then be firmly locked onto the chair leg 1 by virtue of its unique elasticity and shape advantages, thereby achieving a stable and reliable fixed connection between the support base 4 and the chair leg 1, providing a solid foundation for the stable operation of the entire seat lift rotation position locking mechanism.

[0034] In this embodiment, an annular toothed disc 502 is provided on the top of the kit 5. The teeth of the annular toothed disc 502 are evenly distributed and precisely sized, providing a reliable guarantee for subsequent cooperation with the locking component 7. The locking component 7, as a key component for locking the horizontal rotation position of the chair seat, includes a drive rod 701 rotatably mounted on the side wall of the adjusting base 6. The side wall of the adjusting base 6 has precisely reserved mounting holes to ensure that the drive rod 701 can rotate smoothly and flexibly on the side wall of the adjusting base 6 and remain stable during rotation without shaking or deviation. One end of the drive rod 701 cleverly extends into the interior of the adjusting base 6, and a first locking protrusion 702 is firmly provided at this end. The shape of the first locking protrusion 702 precisely matches the teeth of the annular toothed disc 502. When the drive rod 701 rotates, the first locking... The protrusion 702 can accurately engage with the tooth groove of the annular toothed disc 502, effectively preventing the adjustment base on the kit 5 and the connected seat 2 from rotating, thus achieving stable locking of the seat 2 at a specific rotation position on the horizontal plane. At the other end of the drive rod 701, a rotating handle 703 is installed for easy operation by the user. Its shape conforms to the human hand grip habit, and the surface is treated with anti-slip treatment, such as adding texture or covering with anti-slip rubber material, so that the user can easily apply force and is not prone to slipping when operating. The user only needs to turn the rotating handle 703 to drive the first locking protrusion 702 to accurately separate or engage with the tooth groove of the annular toothed disc 502 through the drive rod 701, conveniently realizing the unlocking and locking functions of the seat 2 rotation position, bringing the user an efficient and convenient user experience.

[0035] Example 2: The fixed installation method of the support base 4 in Example 2 is an improvement on the above examples. The technical content disclosed in the above examples will not be described again. The content of the above-disclosed examples also belongs to the content disclosed in Example 2.

[0036] One embodiment of the present invention, in conjunction with Figure 3 As shown, a connecting plate 403 is provided at the bottom of the supporting base 4. The connecting plate 403 has a smooth and flat surface, ensuring good fit with the chair leg 1. Several threaded holes 404 are evenly opened on the connecting plate 403. During installation, the connecting plate 403 is tightly fixed to the chair leg 1 by bolts of a specific specification passing through these threaded holes 404. This fixing installation method is suitable for chair legs 1 of different types and structures.

[0037] Example 3: The fixed installation method of the support base 4 in Example 3 is an improvement on the above examples. The technical content disclosed in the above examples will not be described again. The content of the above-disclosed examples also belongs to the content disclosed in Example 3.

[0038] One embodiment of the present invention, in conjunction with Figure 4 The inner wall of the support base 4 shown is precisely set to perfectly match the outer wall diameter of the lifter 3. During installation, the support base 4 is precisely fitted onto the outside of the lifter 3. Due to the high compatibility of their diameters, the support base 4 can tightly surround the lifter 3 and maintain a relatively stable positional relationship in a natural state. To further enhance the fixing effect between the two, this fixing installation method results in low cost of the support base 4.

[0039] Example 4: The structure of the locking member 7 in Example 4 is an improvement on the above examples. The technical content disclosed in the above examples will not be described again. The content of the above-disclosed examples also belongs to the content disclosed in Example 4.

[0040] One embodiment of the present invention, in conjunction with Figure 5The locking mechanism shown mainly comprises two sets of guide plates 704 disposed opposite to each other inside the adjusting base 6. During manufacturing, the adjusting base 6 is specially designed with space reserved for precise installation of the guide plates 704. The two sets of guide plates 704 are arranged parallel to each other and spaced apart. A pull-out plate 705 is flexibly disposed between the two sets of guide plates 704. The pull-out plate 705 moves freely within the track defined by the guide plates 704. A return spring 706 is disposed between the pull-out plate 705 and the inner wall of the adjusting base 6. In its natural state, the return spring 706 provides a continuous and stable return force to the pull-out plate 705, ensuring that the pull-out plate 705 automatically returns to its initial position when no external force is applied. A second locking protrusion 707 is provided on the pull-out plate 705. The second locking protrusion 707 can be accurately embedded in the tooth groove of the annular toothed disc 502. To facilitate user operation, a pull rod 708 is provided through the adjustment base 6 on the pull plate 705, and the other end extends to the outside of the adjustment base 6 and is equipped with a handle 709. The design of the handle 709 fully considers the ergonomic principle, and its shape conforms to the human hand grip habit. In this embodiment, the user only needs to gently pull the handle 709 to drive the pull plate 705 to slide between the guide plates 704 through the pull rod 708, so as to conveniently realize the separation or engagement of the second locking protrusion 707 and the tooth groove of the annular toothed disc 502, thereby efficiently realizing the unlocking and locking functions of the seat 2 rotation position, bringing users a convenient and reliable user experience.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A seat lift rotation position locking mechanism, comprising a chair leg (1) and a seat (2), wherein a lifter (3) for controlling the height of the seat (2) is provided on the chair leg (1), characterized in that: A locking mechanism is provided between the seat (2) and the lifter (3). The locking mechanism includes a support base (4), a kit (5), an adjusting base (6), and a locking element (7). The supporting base (4) is fixed to the outside of the lifting device (3); The supporting base (4) and the kit (5) are engaged by an oriented structure to form a vertical displacement; The adjusting base (6) is fixed to the bottom of the seat (2), and the top of the kit (5) is placed inside it; The locking member (7) is disposed on the adjusting base (6), and the locking member (7) and the top of the kit (5) form a horizontal rotation position lock.

2. The seat lift rotation position locking mechanism according to claim 1, characterized in that: The support base (4) is provided with a number of guide protrusions (401), and the kit (5) is provided with guide grooves (501) corresponding to the positions of the guide protrusions (401).

3. The seat lift rotation position locking mechanism according to claim 1, characterized in that: The bottom of the support base (4) is provided with a clip (402), the size of which is adapted to the chair leg (1) to form a fixed position.

4. The seat lift rotation position locking mechanism according to claim 1, characterized in that: The bottom of the support base (4) is provided with a connecting plate (403), and the connecting plate (403) is provided with a plurality of threaded holes (404). The connecting plate (403) is fixed to the chair leg (1) by bolts passing through the threaded holes (404).

5. The seat lift rotation position locking mechanism according to claim 1, characterized in that: The inner diameter of the support base (4) is adapted to the outer diameter of the elevator (3), and the support base (4) is fixed to the elevator (3) by being sleeved.

6. The seat lift rotation position locking mechanism according to claim 3, characterized in that: The kit (5) is provided with an annular toothed disc (502) on the top. The locking member (7) includes a drive rod (701) rotatably disposed on the side wall of the adjusting base (6). One end of the drive rod (701) extends into the adjusting base (6) and is provided with a first locking protrusion (702). The first locking protrusion (702) abuts against the tooth groove of the annular toothed disc (502). The other end of the drive rod (701) is provided with a rotating handle (703).

7. A seat lift rotation position locking mechanism according to claim 3, characterized in that: The kit (5) is provided with an annular toothed disc (502) on the top. The locking member (7) includes two sets of guide plates (704) disposed opposite to each other in the adjusting base (6). A pull plate (705) is provided between the two sets of guide plates (704). A return spring (706) is provided between the pull plate (705) and the inner wall of the adjusting base (6). A second locking protrusion (707) is provided on the pull plate (705). The second locking protrusion (707) abuts against the tooth groove of the annular toothed disc (502). A pull rod (708) is provided through the adjusting base (6) on the pull plate (705). A pull handle (709) is provided at the end of the pull rod (708).

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