One-way locking circulating lifting structure and handrail

Abstract

The utility model discloses a one-way locking circulation lifting structure and a handrail, the one-way locking circulation lifting structure comprises a fixed pipe, a plurality of gear grooves arranged at intervals along the length direction of the fixed pipe are arranged on the side wall of the fixed pipe; the lifting pipe is slidably arranged on the fixed pipe; the telescopic assembly is installed on the lifting pipe, the lifting pipe is connected with the telescopic assembly and drives the telescopic assembly to move in the length direction of the fixing pipe, and the telescopic assembly is matched with the gear grooves so as to drive the telescopic assembly to do transverse telescopic motion and be sequentially matched with the gear grooves in an inserted connection mode; wherein the fixed pipe is provided with a path groove, the lifting pipe is provided with a limiting groove, the telescopic assembly comprises a limiting shaft, and the limiting shaft is arranged in the path groove in a sliding mode and circularly moves in the path groove; a first guide face is arranged at the upper end of the path groove, and a second guide face is arranged at the lower end of the path groove to lock and reset the telescopic assembly. The height of the armrest can be adjusted in a switch-free and multi-gear mode, operation convenience and user experience are remarkably improved, and stability and durability of the structure are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture accessories, in particular to a one-way locking circulation lifting structure and an armrest with the one-way locking circulation lifting structure. Background Art

[0002] In modern furniture design, in order to improve the comfort and adaptability of products, more and more furniture is equipped with adjustable parts, such as armrests and backrests of seats. Especially in the field of office furniture, as people pay more and more attention to healthy sitting posture and comfortable working environment, armrests that can flexibly adjust height have become one of the key factors to improve work efficiency and reduce physical fatigue. However, the traditional armrest lifting and adjustment mechanism has certain limitations, which are mainly reflected in the following aspects:

[0003] 1. Operational complexity: Most armrests use button-type or wrench-type adjustment methods. Users need to find and operate specific control devices before adjusting the height, which not only increases the difficulty of use, but also affects the continuity and smoothness of operation.

[0004] 2. Poor user experience: Frequently searching for and operating control devices, especially when users need to quickly adjust the armrest height to adapt to different work scenarios, this operation method is likely to cause user dissatisfaction and fatigue.

[0005] 3. Reliability and durability issues: Control devices such as buttons or wrenches may malfunction after long-term use, such as jamming and failure, which will affect the normal adjustment function of the armrests and reduce the overall service life of the furniture.

[0006] 4. Cost and maintenance: Complex control mechanisms often mean higher manufacturing costs and subsequent maintenance requirements, which is a disadvantage for consumers who pursue cost-effectiveness and low maintenance costs.

[0007] In view of the above problems, the market urgently needs a new armrest lifting adjustment mechanism that provides a simpler, more intuitive and reliable operation method while ensuring the stability and service life of the structure. Therefore, developing an armrest lifting structure that can achieve smooth and multi-level adjustment without pressing a switch is of great significance to improving the competitiveness of furniture products and user satisfaction. Utility Model Content

[0008] 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 a one-way locking cycle lifting structure, which realizes switch-free, multi-gear adjustment of the armrest height, significantly improves the convenience of operation and user experience, while ensuring the stability and durability of the structure, and provides an efficient and reliable solution for the furniture industry.

[0009] The utility model also provides an armrest with the one-way locking cyclic lifting structure.

[0010] According to the utility model, a one-way locking cyclic lifting structure comprises:

[0011] A fixed tube, wherein a plurality of gear slots are formed on a side wall of the fixed tube, and the plurality of gear slots are arranged at intervals along the length direction of the fixed tube;

[0012] A lifting tube, slidably disposed on the fixed tube;

[0013] A telescopic assembly is installed on the lifting tube, the lifting tube is connected to and drives the telescopic assembly to move along the length direction of the fixed tube, and the telescopic assembly cooperates with the gear slot to drive the telescopic assembly to move horizontally and be plugged and matched with the plurality of gear slots in sequence;

[0014] The fixed tube is provided with a path groove, the lifting tube is provided with a limit groove, the telescopic assembly includes a limit shaft, the limit shaft is slidably provided in the path groove and circulates in the path groove;

[0015] The upper end of the path groove is provided with a first guide surface extending obliquely in a direction away from the gear groove, and the limit shaft is suitable for cooperating with the first guide surface to enter the limit groove and drive the telescopic assembly to remain in a compressed state away from the gear groove;

[0016] The lower end of the path groove is provided with a second guide surface extending obliquely toward the gear groove, and the limit shaft is suitable for cooperating with the second guide surface to disengage from the limit groove and drive the telescopic assembly to resume the cooperative connection with the gear groove.

[0017] According to the one-way locking cyclic lifting structure described in the utility model, at least the following beneficial effects are achieved: during application, the user pulls the lifting tube upwards, and the lifting tube can be locked at multiple gear heights respectively through the cooperation of the telescopic component and the gear slot. Then, when it is pulled to the uppermost gear slot, it continues to be pulled. The limit shaft enters the limit slot under the guidance of the first guide surface, and locks the telescopic component. Then, the lifting tube moves downward to the lowest height, and the limit shaft disengages from the limit slot under the guidance of the second guide surface, and the telescopic component is plugged and cooperated with the lowermost gear slot again. Then, the lifting tube can gradually adjust the height upwards, and after adjusting to the highest, it is pressed down to the lowest, and the operation is performed in a one-way cycle, thereby achieving a smoother and more convenient height adjustment experience.

[0018] According to a one-way locking cyclic lifting structure described in some embodiments of the utility model, the lifting tube is provided with an installation groove, the telescopic assembly includes a plug-in block and a return spring, the plug-in block is slidably arranged in the installation groove along the horizontal direction, one end of the return spring abuts against the groove wall of the installation groove, and the other end presses and drives the plug-in block to be plugged into the gear groove.

[0019] According to a one-way locking cyclic lifting structure described in some embodiments of the utility model, the plug-in block is provided with a vertical groove, the lifting tube is provided with a transverse groove, the limit groove is located at one end of the transverse groove away from the gear groove, one end of the limit groove is connected to the transverse groove, and the other end extends in the vertical direction, and the limit shaft is slidably provided in the vertical groove and the transverse groove to drive the plug-in block to move laterally.

[0020] According to a one-way locking cyclic lifting structure described in some embodiments of the utility model, there are two return springs, and the two return springs are respectively located on the upper and lower sides of the limiting shaft.

[0021] According to a one-way locking cyclic lifting structure described in some embodiments of the utility model, a mounting hole is provided on the side of the plug-in block away from the gear slot, and part of the return spring is placed in the mounting hole.

[0022] According to a one-way locking cyclic lifting structure described in some embodiments of the utility model, the end of the plug-in block and the gear slot are matched with each other in an inclined transmission manner.

[0023] According to a one-way locking cyclic lifting structure described in some embodiments of the utility model, a plug-in portion is provided at the end of the plug-in block, and the plug-in portion is plug-matched with the gear slot. The upper wall of the plug-in portion is provided with a guiding inclined surface to drive the plug-in portion to move inward and disengage from the gear slot.

[0024] According to a one-way locking cyclic lifting structure described in some embodiments of the utility model, there are multiple plug-in parts, and the multiple plug-in parts are arranged at intervals along the length direction of the fixed tube. The distance between adjacent plug-in parts is equal to the distance between adjacent gear slots, and the plug-in parts correspond to the gear slots one by one.

[0025] According to a one-way locking cyclic lifting structure described in some embodiments of the utility model, the distance between adjacent gear slots is A, which satisfies: 8mm≤A≤20mm.

[0026] The armrest according to the utility model comprises a one-way locking cyclic lifting structure according to the utility model.

[0027] The armrest according to the utility model has at least the following beneficial effects: the above-mentioned technology is integrated into the armrest design, the height of the armrest can be gradually adjusted upwards, and after being adjusted to the highest, it can be pressed down to the lowest, and the operation is performed in a unidirectional cycle, achieving a smoother and more convenient height adjustment experience, and significantly improving the practicality of the armrest and user experience.

[0028] 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

[0029] 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:

[0030] Figure 1 This is an exploded schematic diagram of a one-way locking cyclic lifting structure according to an embodiment of the utility model;

[0031] Figure 2 This is an overall schematic diagram of a one-way locking cyclic lifting structure according to an embodiment of the utility model;

[0032] Figure 3 It is a structural schematic diagram of a telescopic component of a one-way locking cyclic lifting structure according to an embodiment of the utility model.

[0033] Description of Figure Numbers:

[0034] Fixed tube 100; gear slot 101; path slot 102; first guide surface 1021; second guide surface 1022;

[0035] Lifting tube 200; mounting groove 201; limiting groove 202; transverse groove 203;

[0036] Telescopic assembly 300 ; plug-in block 310 ; vertical slot 3101 ; mounting hole 3102 ; plug-in portion 311 ; guide slope 3111 ; limit shaft 320 ; return spring 330 . DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] In modern furniture design, in order to improve the comfort and adaptability of products, more and more furniture is equipped with adjustable parts, such as armrests and backrests of seats. Especially in the field of office furniture, as people pay more and more attention to healthy sitting posture and comfortable working environment, armrests that can flexibly adjust height have become one of the key factors to improve work efficiency and reduce physical fatigue. However, the traditional armrest lifting and adjustment mechanism has certain limitations, which are mainly reflected in the following aspects:

[0043] 1. Operational complexity: Most armrests use button-type or wrench-type adjustment methods. Users need to find and operate specific control devices before adjusting the height, which not only increases the difficulty of use, but also affects the continuity and smoothness of operation.

[0044] 2. Poor user experience: Frequently searching for and operating control devices, especially when users need to quickly adjust the armrest height to adapt to different work scenarios, this operation method is likely to cause user dissatisfaction and fatigue.

[0045] 3. Reliability and durability issues: Control devices such as buttons or wrenches may malfunction after long-term use, such as jamming and failure, which will affect the normal adjustment function of the armrests and reduce the overall service life of the furniture.

[0046] 4. Cost and maintenance: Complex control mechanisms often mean higher manufacturing costs and subsequent maintenance requirements, which is a disadvantage for consumers who pursue cost-effectiveness and low maintenance costs.

[0047] In view of the above problems, the market urgently needs a new armrest lifting adjustment mechanism that provides a simpler, more intuitive and reliable operation method while ensuring the stability and service life of the structure. Therefore, developing an armrest lifting structure that can achieve smooth and multi-level adjustment without pressing a switch is of great significance to improving the competitiveness of furniture products and user satisfaction.

[0048] For this reason, Figure 1 and Figure 2As shown, a one-way locking cycle lifting structure proposed by the utility model includes a fixed tube 100, a lifting tube 200 slidably set on the fixed tube 100, and a telescopic component 300 installed on the lifting tube 200, wherein the telescopic component 300 is used to lock the height of the lifting tube 200, wherein the side wall of the fixed tube 100 is provided with a plurality of gear slots 101 arranged at intervals along the length direction of the fixed tube 100, the lifting tube 200 is connected to and drives the telescopic component 300 to move along the length direction of the fixed tube 100, and the telescopic component 300 cooperates with the gear slot 101 to drive the telescopic component 300 to telescope horizontally and to be plugged and matched with the plurality of gear slots 101 in sequence. In addition, the fixed tube 100 is provided with a path groove 102, the lifting tube 200 is provided with a limiting groove 202, and the telescopic assembly 300 includes a limiting shaft 320, which is slidably arranged in the path groove 102 and circulates in the path groove 102. Specifically, the upper end of the path groove 102 is provided with a first guide surface 1021 extending obliquely in a direction away from the gear groove 101, and the limiting shaft 320 is suitable for cooperating with the first guide surface 1021 to enter the limiting groove 202 and drive the telescopic assembly 300 to remain in a compressed state out of the gear groove 101; the lower end of the path groove 102 is provided with a second guide surface 1022 extending obliquely in a direction toward the gear groove 101, and the limiting shaft 320 is suitable for cooperating with the second guide surface 1022 to disengage from the limiting groove 202 and drive the telescopic assembly 300 to resume the mating connection with the gear groove 101. In application, the user pulls the lifting tube 200 upwards, and the lifting tube 200 can be locked at multiple gear heights through the cooperation of the telescopic assembly 300 and the gear slot 101. Then, when it is pulled to the uppermost gear slot 101, it continues to be pulled. The limit shaft 320 enters the limit slot 202 under the guidance of the first guide surface 1021, and the telescopic assembly 300 is locked. Then, the lifting tube 200 moves downward to the lowest height, and the limit shaft 320 is disengaged from the limit slot 202 under the guidance of the second guide surface 1022. The telescopic assembly 300 is again plugged and matched with the lowest gear slot 101. In addition, the lifting tube 200 can gradually adjust the height upwards, and after adjusting to the highest, it can be pressed down to the lowest, and the operation is performed in a one-way cycle, achieving a smoother and more convenient height adjustment experience.

[0049] Refer to Figure 1, the lifting tube 200 is provided with a mounting groove 201, and the telescopic assembly 300 includes a plug-in block 310 and a return spring 330. The plug-in block 310 is slidably arranged in the mounting groove 201 in the horizontal direction, and one end of the return spring 330 abuts against the groove wall of the mounting groove 201, and the other end presses and drives the plug-in block 310 to be plugged into the gear groove 101. Under the action of the return spring 330, the plug-in block 310 can accurately cooperate with the gear groove 101 on the fixed tube 100, ensuring that the lifting tube 200 can be firmly locked at each height gear, greatly improving the stability and safety of the structure, and avoiding the risk of accidental movement. In some embodiments, the end of the plug-in block 310 and the gear groove 101 are matched with the inclined transmission, simplifying the unlocking process between the plug-in block 310 and the gear groove 101, reducing the force required by the user during the adjustment process, reducing the operating resistance, so that the user can feel a lighter feel when adjusting the height of the armrest, and improving the overall use experience. Optionally, a plug-in portion 311 is provided at the end of the plug-in block 310, and the plug-in portion 311 is plugged and matched with the gear slot 101, and a guide slope 3111 is provided on the upper wall of the plug-in portion 311 to drive the plug-in portion 311 to move inward and disengage from the gear slot 101. In addition, the plug-in block 310 is provided with a vertical slot 3101, and the lifting tube 200 is provided with a transverse slot 203. The limiting slot 202 is located at one end of the transverse slot 203 away from the gear slot 101, one end of the limiting slot 202 is connected to the transverse slot 203, and the other end extends in the vertical direction. The limiting shaft 320 is slidably provided in the vertical slot 3101 and the transverse slot 203 to drive the plug-in block 310 to move laterally. It is easy to understand that when the lifting tube 200 moves upward, the limit shaft 320 moves horizontally in the horizontal groove 203 and abuts against the upper wall of the vertical groove 3101 for transmission, driving the plug-in block 310 to move upward. At the same time, the guide slope 3111 abuts and slides against the edge of the gear groove 101, so that the plug-in block 310 moves inward and disengages from the gear groove 101. Then, under the action of the return spring 330, the plug-in block 310 is plugged and fixed to the previous gear groove 101.

[0050] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, there are two return springs 330, and the two return springs 330 are respectively located on the upper and lower sides of the limit shaft 320. By arranging a return spring 330 on the upper and lower sides of the limit shaft 320, the force is evenly distributed, and the return spring 330 has a more uniform thrust on the plug-in block 310, ensuring the effective cooperation between the plug-in block 310 and the gear slot 101, greatly enhancing the redundancy and reliability of the system, and extending the service life of the overall structure. Further, referring to Figure 3A mounting hole 3102 is provided on the side of the plug-in block 310 facing away from the gear slot 101, and part of the return spring 330 is placed in the mounting hole 3102, which not only simplifies the assembly process of the return spring 330 and reduces the possibility of assembly errors, but also effectively avoids the return spring 330 from interfering with the lateral movement of the plug-in block 310, ensuring the smoothness and stability of the system operation and improving the user experience.

[0051] Further, refer to Figure 2 In some embodiments of the present invention, there are multiple plug-in parts 311, and the multiple plug-in parts 311 are arranged at intervals along the length direction of the fixed tube 100. The distance between adjacent plug-in parts 311 is equal to the distance between adjacent gear slots 101, and the plug-in parts 311 correspond to the gear slots 101 one by one. Optionally, there are two plug-in parts 311, and the two are respectively plugged and matched with adjacent gear slots 101 at the same time, which effectively improves the stability of the lifting tube 200 locked at each height gear. Optionally, the distance between adjacent gear slots 101 is A, which satisfies: 8mm≤A≤20mm. While realizing multi-gear adjustment, the compactness of the structure is maintained, avoiding the complexity of the structure and the increase in cost caused by excessive increase in the number of gears, and realizing the dual optimization of product performance and economic benefits. For example, A=10mm; or, A=12mm; or, A=15mm.

[0052] The armrest according to the embodiment of the utility model includes a one-way locking cycle lifting structure according to the embodiment of the utility model. In some applications, the armrest body is installed on the upper part of the lifting tube 200. By integrating the above technology into the armrest design, the height of the armrest can be gradually adjusted upwards, and after being adjusted to the highest, it can be pressed down to the lowest, and the operation is performed in a one-way cycle, achieving a smoother and more convenient height adjustment experience, and significantly improving the practicality and user experience of the armrest.

[0053] Other structures and operations of the 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. A one-way locking cyclic lifting structure, characterized in that: include: A fixed tube, wherein a plurality of gear slots are formed on a side wall of the fixed tube, and the plurality of gear slots are arranged at intervals along a length direction of the fixed tube; A lifting tube, slidably disposed on the fixed tube; A telescopic assembly is installed on the lifting tube, the lifting tube is connected to and drives the telescopic assembly to move along the length direction of the fixed tube, and the telescopic assembly cooperates with the gear slot to drive the telescopic assembly to move horizontally and be plugged and matched with the plurality of gear slots in sequence; The fixed tube is provided with a path groove, the lifting tube is provided with a limit groove, the telescopic assembly includes a limit shaft, the limit shaft is slidably provided in the path groove and circulates in the path groove; The upper end of the path groove is provided with a first guide surface extending obliquely in a direction away from the gear groove, and the limit shaft is suitable for cooperating with the first guide surface to enter the limit groove and drive the telescopic assembly to remain in a compressed state away from the gear groove; The lower end of the path groove is provided with a second guide surface extending obliquely toward the gear groove, and the limit shaft is suitable for cooperating with the second guide surface to disengage from the limit groove and drive the telescopic assembly to resume the cooperative connection with the gear groove.

2. A one-way locking cyclic lifting structure according to claim 1, characterized in that: The lifting tube is provided with an installation groove, and the telescopic assembly includes a plug-in block and a return spring. The plug-in block is slidably arranged in the installation groove along the horizontal direction, one end of the return spring abuts against the groove wall of the installation groove, and the other end presses and drives the plug-in block to be plugged into the gear groove.

3. A one-way locking cyclic lifting structure according to claim 2, characterized in that: The plug-in block is provided with a vertical groove, the lifting tube is provided with a transverse groove, the limit groove is located at one end of the transverse groove away from the gear groove, one end of the limit groove is connected to the transverse groove, and the other end extends in the vertical direction, and the limit shaft is slidably provided in the vertical groove and the transverse groove to drive the plug-in block to move laterally.

4. The one-way locking cyclic lifting structure according to claim 2, characterized in that: There are two return springs, and the two return springs are respectively located on the upper and lower sides of the limit shaft.

5. A one-way locking cyclic lifting structure according to claim 2 or 4, characterized in that: A mounting hole is arranged on one side of the plug-in block away from the gear slot, and part of the return spring is placed in the mounting hole.

6. A one-way locking cyclic lifting structure according to any one of claims 2 to 4, characterized in that: The end of the plug-in block and the gear slot are matched with each other in an inclined transmission manner.

7. The one-way locking cyclic lifting structure according to claim 6, characterized in that: The end of the plug-in block is provided with a plug-in portion, the plug-in portion is plug-fitted with the gear slot, and the upper wall of the plug-in portion is provided with a guiding inclined surface to drive the plug-in portion to move inward and disengage from the gear slot.

8. The one-way locking cyclic lifting structure according to claim 7, characterized in that: There are multiple plug-in parts, which are arranged at intervals along the length direction of the fixed tube, and the distance between adjacent plug-in parts is equal to the distance between adjacent gear slots. The plug-in parts correspond to the gear slots one by one.

9. A one-way locking cyclic lifting structure according to claim 1 or 8, characterized in that: The distance between adjacent gear slots is A, which satisfies: 8mm≤A≤20mm.

10. Armrest, characterized in that: It comprises a one-way locking cyclic lifting structure as described in any one of claims 1 to 9.

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