Anti-shaking structure and lifting handrail

Abstract

The utility model discloses an anti-shake structure and a lifting handrail wherein the anti-shake structure comprises: a fixed block comprising a matching part; the sliding sleeve is arranged on the matching part in a sliding and sleeving manner; and the abutting assembly is installed on the outer wall of the matching part and comprises a compression spring and a deformation block, one end of the compression spring abuts against the matching part, and the other end of the compression spring abuts against the deformation block so that the deformation block can be driven to partially stretch out of the outer wall of the matching part and be in abutting fit with the inner wall of the sliding sleeve. The problem of shaking in the lifting process of the armrest is directly solved by utilizing the sliding fit of the matching part and the sliding sleeve and combining with the elastic pressure action of the pressing assembly, the deformation block can be tightly attached to the inner wall of the sliding sleeve, gaps and looseness are reduced, tiny vibration in the movement process is effectively absorbed, and the stability of the armrest is improved. The whole lifting action becomes smoother and quiet, and the performance of the lifting handrail and the user experience are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to an anti-sway structure and a lifting armrest with the anti-sway structure. Background Art

[0002] In the field of modern furniture design and manufacturing, especially in seating products that focus on ergonomics and comfort, adjustable armrests have become one of the important features to improve user satisfaction. However, as the market demand for lifting armrest functions increases, related technical challenges are becoming increasingly prominent. Traditional lifting armrest designs usually rely on simple slides or screw mechanisms to achieve height adjustment, but these designs often cannot avoid shaking, instability, and even noise problems during use, which directly affect the product's user experience and durability.

[0003] Specifically, the assembly gap between the lifting seat and the fixed seat of the armrest is a key factor leading to instability. Due to manufacturing tolerances, thermal expansion and contraction of materials, or wear and tear after long-term use, a large gap is easily formed between the two parts, which not only causes a noticeable shaking feeling during the lifting operation, but also produces a harsh friction sound due to direct metal contact. In addition, this structural design deficiency may also cause the armrest to be locked loosely at different heights, further reducing the safety and comfort of use.

[0004] In the related technologies, more precise processing technology is used to reduce the gap between the lifting seat and the fixed seat, or buffer materials are added to the lifting mechanism, but these solutions are either expensive, limiting their wide application, or have limited improvement effects and cannot fundamentally solve the shaking and noise problems. Therefore, developing a new technical solution that is both economical and efficient and can significantly improve the stability and smoothness of the lifting armrest has become a technical problem that the industry urgently needs to solve. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an anti-sway structure, which can not only effectively reduce the shaking during lifting and improve the smoothness of operation, but also reduce the direct friction between the components, reduce the operating noise, extend the service life, improve the stability of the entire lifting system, ensure that the handrail can be firmly positioned at any height position without shaking back and forth or left and right, and greatly improve the user's comfort and the durability of the product.

[0006] The utility model also provides a lifting handrail with the anti-shaking structure.

[0007] The anti-sway structure according to the utility model comprises:

[0008] A fixing block, the fixing block comprising a matching portion;

[0009] A sliding sleeve, which is arranged on the matching portion;

[0010] A pressing assembly is installed on the outer wall of the matching part, and the pressing assembly includes a compression spring and a deformation block. One end of the compression spring presses against the matching part, and the other end presses against the deformation block to drive the deformation block to partially extend out of the outer wall of the matching part and press and fit with the inner wall of the sliding sleeve.

[0011] The anti-sway structure described in the utility model has at least the following beneficial effects: the sliding cooperation between the matching part and the sliding sleeve, combined with the elastic pressure of the pressing component, directly solves the shaking problem existing in the lifting and lowering process of the armrest; and the continuous elastic driving of the deformation block by the compression spring ensures that the deformation block can fit tightly against the inner wall of the sliding sleeve. This dynamic adaptive pressing not only reduces the gap and looseness, but also effectively absorbs the tiny vibrations during the movement, making the entire lifting action smoother and quieter. This design simplifies the complexity of the traditional structure, and at the same time significantly improves the performance and user experience of the lifting armrest without increasing too much cost.

[0012] According to the anti-shake structure described in some embodiments of the utility model, the matching portion is in the shape of a flat plate, and there are two pressing assemblies, which are respectively installed on opposite side walls of the matching portion to press against opposite inner walls of the sliding sleeve.

[0013] According to the anti-shake structure described in some embodiments of the present invention, there are multiple pressing assemblies, and the multiple pressing assemblies are arranged at intervals along the length direction of the matching portion to press different areas of the sliding sleeve.

[0014] According to the anti-shake structure described in some embodiments of the utility model, a accommodating cavity is provided in the middle of the sliding sleeve, and a limit strip group is provided on the cavity wall protrusion of the accommodating cavity. The limit strip group abuts against the outer wall of the matching part to guide the sliding of the sliding sleeve.

[0015] According to the anti-shake structure described in some embodiments of the present invention, the matching portion is in the shape of a flat plate, and the limiting strip group includes three limiting strips, and the three limiting strips are in corresponding abutment with three successively adjacent wall surfaces of the matching portion.

[0016] According to the anti-shake structure described in some embodiments of the utility model, there are two limit strip groups, and the two limit strip groups are respectively slidably matched with the two ends of the matching part along the width direction.

[0017] According to the anti-shake structure described in some embodiments of the present invention, the deformation block is made of soft rubber.

[0018] According to the anti-shake structure described in some embodiments of the present invention, the thickness of the deformation block is greater than the thickness of the matching portion.

[0019] According to the anti-shake structure described in some embodiments of the utility model, the deformation block is provided with a sleeve groove and an installation groove which are interconnected, the sleeve groove is snap-fitted with the matching part, and part of the compression spring is installed in the installation groove.

[0020] According to the lifting armrest of the utility model, including the anti-sway structure of the utility model, the fixing block is provided with a mounting portion, the mounting portion is used to connect with the seat body, and the matching portion is provided with a plurality of gear slots arranged at intervals along the sliding direction of the sliding sleeve;

[0021] An operating block, wherein a plug-in portion is provided at the tail of the operating block, the plug-in portion matches the shape of the gear slot and is plugged with the gear slot, and the operating block is slidably mounted on the sliding sleeve to drive the plug-in portion to move inward and disengage from the gear slot;

[0022] A return spring, one end of which is pressed against one of the matching portion and the sliding sleeve, and the other end of which is pressed against the end of the operating block, so as to drive the plug-in portion to move outward and embed into one of the gear slots.

[0023] The lifting armrest according to the utility model has at least the following beneficial effects: by setting the connection between the mounting portion and the seat body, the plug-in cooperation between the gear slot and the operating block, and the action of the return spring, a simple and quick lifting operation and precise adjustment of the height are achieved, which not only simplifies the user's operating process, but also ensures that the armrest can be firmly positioned after each adjustment through precise gear control, greatly improving the convenience and satisfaction of use.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic cross-sectional view of the anti-shake structure of an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the anti-shake structure of an embodiment of the utility model;

[0028] Figure 3 It is an exploded view of the anti-shake structure of an embodiment of the utility model.

[0029] Description of Figure Numbers:

[0030] Fixed block 100; matching portion 110; shift slot 1101; mounting portion 120;

[0031] Sliding sleeve 200; accommodating cavity 201; limiting strip 210;

[0032] Pressing assembly 300; deformation block 310; sleeve groove 3101; installation groove 3102; compression spring 320;

[0033] Operation block 400; plug-in portion 410;

[0034] Return spring 500. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] In the field of modern furniture design and manufacturing, especially in seating products that focus on ergonomics and comfort, adjustable armrests have become one of the important features to improve user satisfaction. However, as the market demand for lifting armrest functions increases, related technical challenges are becoming increasingly prominent. Traditional lifting armrest designs usually rely on simple slides or screw mechanisms to achieve height adjustment, but these designs often cannot avoid shaking, instability, and even noise problems during use, which directly affect the product's user experience and durability.

[0041] Specifically, the assembly gap between the lifting seat and the fixed seat of the armrest is a key factor leading to instability. Due to manufacturing tolerances, thermal expansion and contraction of materials, or wear and tear after long-term use, a large gap is easily formed between the two parts, which not only causes a noticeable shaking feeling during the lifting operation, but also produces a harsh friction sound due to direct metal contact. In addition, this structural design deficiency may also cause the armrest to be locked loosely at different heights, further reducing the safety and comfort of use.

[0042] In the related technologies, more precise processing technology is used to reduce the gap between the lifting seat and the fixed seat, or buffer materials are added to the lifting mechanism, but these solutions are either expensive, limiting their wide application, or have limited improvement effects and cannot fundamentally solve the shaking and noise problems. Therefore, developing a new technical solution that is both economical and efficient and can significantly improve the stability and smoothness of the lifting armrest has become a technical problem that the industry urgently needs to solve.

[0043] For this reason, Figures 1 to 3As shown, the anti-sway structure proposed by the utility model includes a fixed block 100, a sliding sleeve 200 that is slidably matched with the fixed block 100, and a pressing assembly 300 for reducing the matching clearance between the fixed block 100 and the sliding sleeve 200, wherein the fixed block 100 includes a mounting portion 120 and a matching portion 110, wherein the mounting portion 120 is used to connect with the seat body, and the sliding sleeve 200 is arranged on the matching portion 110. Specifically, the pressing assembly 300 is installed on the outer wall of the matching portion 110, and the pressing assembly 300 includes a compression spring 320 and a deformation block 310, one end of the compression spring 320 presses against the matching portion 110, and the other end presses against the deformation block 310, so as to drive the deformation block 310 to partially extend out of the outer wall of the matching portion 110 and press against the inner wall of the sliding sleeve 200. It should be noted that the sliding cooperation between the matching part 110 and the sliding sleeve 200, combined with the elastic pressure of the pressing component 300, directly solves the shaking problem existing in the lifting and lowering process of the armrest. In addition, the continuous elastic drive of the compression spring 320 on the deformation block 310 ensures that the deformation block 310 can fit tightly against the inner wall of the sliding sleeve 200. This dynamic adaptive pressing not only reduces the gap and looseness, but also effectively absorbs the tiny vibrations during the movement, making the entire lifting action smoother and quieter. This design simplifies the complexity of the traditional structure, and at the same time significantly improves the performance and user experience of the lifting armrest without increasing too much cost.

[0044] In some embodiments, the mating portion is columnar, such as a cylindrical or square column. The sliding sleeve is a sleeve that matches the shape of the mating portion (not shown in the figure). In this regard, there may be one, three, four, five, etc., pressing components. For example, three pressing components are evenly arranged along the circumference of the mating portion, and the distance between two adjacent pressing components is 120°. For another example, five pressing components are evenly arranged along the circumference of the mating portion, and the distance between two adjacent pressing components is 72° (not shown in the figure). Refer to Figures 1 to 3 , the matching part 110 is in the shape of a flat plate, and there are two pressing assemblies 300, which are respectively installed on the opposite side walls of the matching part 110 to press against the opposite inner wall of the sliding sleeve 200. In addition, a balanced pressing against the inner wall of the sliding sleeve 200 is achieved, which not only enhances the lateral stability of the handrail during the lifting process, but also effectively reduces the deflection or local wear that may be caused by single-point support, further improves the balance and durability of the lifting operation, and makes the entire lifting process more uniform and smooth. Among them, the sliding sleeve 200 is slidably arranged along the length direction of the matching part 110. Optionally, the two pressing assemblies are respectively installed at the two ends of the thickness direction of the matching part (not shown in the figure), or, in some embodiments of the utility model, the two pressing assemblies 300 are respectively installed at the two ends of the width direction of the matching part 110.

[0045] Furthermore, in addition to providing multiple horizontal surfaces of the mating portion 110 to enhance lateral stability, Figure 3 There are multiple pressing assemblies 300, which are arranged at intervals along the length direction of the matching portion 110 to press different areas of the sliding sleeve 200. More refined support and buffering can be implemented for different areas of the sliding sleeve 200, so that the slight shaking that may occur at different heights can be more accurately controlled and reduced, and the vertical stability can be enhanced, so that extremely high lifting smoothness and stability can be maintained in various usage conditions, which significantly optimizes the user experience.

[0046] In addition, it should be noted that the above-mentioned lateral direction does not specifically refer to a direction that coincides with the horizontal plane, and similarly, the vertical direction does not specifically refer to a direction that coincides with the vertical plane. In some embodiments, the matching portion 110 is arranged obliquely with respect to the horizontal plane, and the sliding sleeve 200 and the matching portion 110 slide as an oblique motion relative to the horizontal plane. At this time, the length direction of the matching portion 110 forms an angle with the horizontal plane, and the lateral direction can be understood as a direction perpendicular to the length of the matching portion 110, and the vertical direction can be understood as a direction perpendicular to the lateral direction.

[0047] Refer to Figures 1 to 3 In some embodiments of the utility model, a receiving cavity 201 is provided in the middle of the sliding sleeve 200, and a limit strip group is provided on the cavity wall protrusion of the receiving cavity 201, and the limit strip group abuts against the outer wall of the matching part 110 to guide the sliding of the sliding sleeve 200. The receiving cavity 201 provided in the middle of the sliding sleeve 200 and the limit strip group on the cavity wall provide a precise guiding function for the sliding sleeve 200, prevent possible deviation during the lifting process, and ensure the accuracy of the lifting trajectory of the handrail. This design effectively improves the guiding accuracy and stability of the system, reduces unnecessary friction and noise, and increases the reliability of the handrail positioning. Specifically, since the mating portion 110 is in the shape of a flat plate, in some embodiments, the limit bar group includes three limit bars 210, and the three limit bars 210 are correspondingly abutted against three adjacent walls of the mating portion 110, forming a stable triangular support structure, further strengthening the guiding and positioning capabilities of the sliding sleeve 200, so that the stability of the entire lifting system in three-dimensional space is greatly improved, and even under fast or frequent lifting operations, it can maintain excellent stability, thereby improving the overall mechanical strength and service life. Furthermore, there are two limit bar groups, and the two limit bar groups are respectively slidably matched with the two ends of the mating portion 110 along the width direction, achieving more comprehensive lateral constraints, effectively preventing the sliding sleeve 200 from swinging in the width direction, and improving the stability and control accuracy in wide-range movement.

[0048] Optionally, the deformation block 310 is a soft rubber part, which can not only provide a good elastic pressure effect and reduce the noise generated by direct friction between metals, but also has a certain shock absorption property, which can absorb the tiny impact that may be generated during the lifting process, thereby further reducing the noise and improving the quiet performance of the armrest operation and the user's comfort. In some embodiments, the deformation block 310 is a silicone or rubber part, which has good elasticity and durability.

[0049] Refer to Figures 1 to 3 In some embodiments of the present invention, the thickness of the deformation block 310 is greater than the thickness of the matching portion 110, further avoiding direct contact between the matching portion 110 and the sliding sleeve 200. It is easy to understand that the end of the deformation block 310 extends out of the outer wall of the matching portion 110 to abut against the sliding sleeve 200, and because the thickness of the deformation block 310 is greater than the thickness of the matching portion 110, the two sides of the deformation block 310 can also extend out of the outer end wall of the matching portion 110 to abut against the sliding sleeve 200, so that the three adjacent walls of the matching portion 110 will not have rigid friction with the sliding sleeve 200, further reducing the generation of noise. In addition, corresponding to the limit strip group, the three adjacent walls of the deformation block 310 are respectively abutted and matched with the three limit strips 210.

[0050] Furthermore, the deformation block 310 is provided with a sleeve groove 3101 and a mounting groove 3102 which are interconnected. The sleeve groove 3101 is engaged with the matching portion 110, so that the matching portion 110 can be partially embedded in the sleeve groove 3101, and the connection between the deformation block 310 and the matching portion 110 is more secure. For example, the tail of the deformation block 310 extends toward the center of the matching portion 110 with a mounting ear, and there are two mounting ears, and a sleeve groove 3101 is formed between the two mounting ears. After installation, the relative groove walls of the mounting ears are respectively abutted against the relative end faces of the matching portion 110 in the thickness direction, so that the deformation block 310 is not easy to fall off along the thickness direction of the matching portion 110. In addition, part of the compression spring 320 is installed in the mounting groove 3102, which not only prevents the compression spring 320 from falling off, but also optimizes the force state and working efficiency of the spring, and ensures that the force applied by the spring to the deformation block 310 is more uniform and lasting, thereby ensuring the stability and reliability of the pressing effect of the deformation block 310.

[0051] According to the embodiment of the utility model, the lifting armrest includes the anti-sway structure according to the embodiment of the utility model, wherein the fixing block 100 is provided with a mounting portion 120, the mounting portion 120 is used to connect with the seat body, and the matching portion 110 is provided with a plurality of gear slots 1101 arranged at intervals along the sliding direction of the sliding sleeve 200. Further, the lifting armrest also includes an operating block 400 and a reset spring 500. Specifically, the tail of the operating block 400 is provided with a plug-in portion 410, the plug-in portion 410 matches the shape of the gear slot 1101 and is plugged and matched with the gear slot 1101. In use, the operating block 400 is slidably mounted on the sliding sleeve 200 to drive the plug-in portion 410 to move inward and disengage from the gear slot 1101. In addition, one end of the reset spring 500 presses against one of the matching portion 110 and the sliding sleeve 200, and the other end presses against the end of the operating block 400 to drive the plug-in portion 410 to move outward and embed into one of the gear slots 1101. In application, after the user presses the operating block 400 inward, the sliding sleeve 200 can be lifted or lowered. It is easy to understand that the armrest body is installed on the top of the sliding sleeve 200, so that the height of the armrest body is adjusted with the lifting and lowering movement of the sliding sleeve 200. After adjusting to the appropriate use position, the user releases the operating block 400, and the reset spring 500 drives the operating block 400 to automatically reset, so that the plug-in block is inserted into the gear slot 1101, and the sliding sleeve 200 can be constantly maintained at the current adjusted height.

[0052] According to the lifting armrest of the embodiment of the utility model, by setting the connection between the mounting portion 120 and the seat body, the plug-in cooperation between the gear slot 1101 and the operating block 400, and the action of the return spring 500, a simple and fast lifting operation and precise height adjustment are achieved, which not only simplifies the user's operating process; but also through precise gear control and the anti-shake structure of the embodiment of the utility model, it is ensured that the armrest can be firmly positioned after each adjustment, which greatly improves the convenience and satisfaction of use.

[0053] Other structures and operations of the lifting armrest according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0054] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Anti-sway structure, characterized in that: include: A fixing block, the fixing block comprising a matching portion; A sliding sleeve, which is arranged on the matching portion; A pressing assembly is installed on the outer wall of the matching part, and the pressing assembly includes a compression spring and a deformation block. One end of the compression spring presses against the matching part, and the other end presses against the deformation block to drive the deformation block to partially extend out of the outer wall of the matching part and press and fit with the inner wall of the sliding sleeve.

2. The anti-sway structure according to claim 1, characterized in that: The matching portion is in the shape of a flat plate. There are two pressing assemblies, which are respectively installed on opposite side walls of the matching portion to press against opposite inner walls of the sliding sleeve.

3. The anti-sway structure according to claim 1, characterized in that: There are a plurality of pressing assemblies, and the plurality of pressing assemblies are arranged at intervals along the length direction of the matching portion to press different areas of the sliding sleeve.

4. The anti-sway structure according to any one of claims 1 to 3, characterized in that: The middle part of the sliding sleeve is provided with an accommodating cavity, the cavity wall of the accommodating cavity is protruded with a limit strip group, and the limit strip group abuts against the outer side wall of the matching part to guide the sliding of the sliding sleeve.

5. The anti-sway structure according to claim 4, characterized in that: The matching portion is in the shape of a flat plate, and the limiting strip group includes three limiting strips, and the three limiting strips are correspondingly abutted against three sequentially adjacent wall surfaces of the matching portion.

6. The anti-sway structure according to claim 5, characterized in that: There are two limit strip groups, and the two limit strip groups are respectively slidably matched with two ends of the matching portion along the width direction.

7. The anti-sway structure according to claim 1, characterized in that: The deformation block is made of soft rubber.

8. The anti-sway structure according to claim 2, 5, 6 or 7, characterized in that: The thickness of the deformation block is greater than the thickness of the matching portion.

9. The anti-sway structure according to claim 2 or 5 or 6 or 7, characterized in that: The deformation block is provided with a sleeve groove and an installation groove which are interconnected, the sleeve groove is engaged with the matching portion, and part of the compression spring is installed in the installation groove.

10. Lifting armrest, characterized by: The anti-sway structure comprises the anti-sway structure according to any one of claims 1 to 9, wherein the fixing block is provided with a mounting portion, the mounting portion is used to connect with the seat body, and the matching portion is provided with a plurality of gear slots arranged at intervals along the sliding direction of the sliding sleeve; An operating block, wherein a plug-in portion is provided at the rear of the operating block, the plug-in portion matches the shape of the gear slot and is plugged with the gear slot, and the operating block is slidably mounted on the sliding sleeve to drive the plug-in portion to move inward and disengage from the gear slot; A return spring, one end of which is pressed against one of the matching portion and the sliding sleeve, and the other end of which is pressed against the end of the operating block, so as to drive the plug-in portion to move outward and embed into one of the gear slots.

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