Handrail lifting mechanism

Abstract

The utility model discloses a handrail lifting mechanism which comprises a driving piece, a lifting piece, a lifting piece, a lifting piece, a lifting piece, a lifting piece and a lifting piece, and is characterized in that the driving piece comprises a fixed part and a movable part, the fixed part is fixed with a sofa or an iron stand; the rail piece is provided with a sliding groove formed in the vertical direction, and the rail piece is used for being fixed to a sofa or an iron stand; the sliding part and the movable part move synchronously, and the sliding part reciprocates in the direction of the sliding groove so as to drive the handrail to ascend and descend. The sliding piece is driven by the driving piece to do reciprocating motion in the sliding groove of the rail piece, lifting of the handrail is achieved, compared with manual rotating or stretching and other modes, operation is easier, more convenient and faster, and the operation time and energy of a user can be reduced. And meanwhile, by adopting a matching structure of the driving part and the rail part, more accurate adjustment and more stable operation can be realized, the adjustment precision and stability are improved, and the device has the advantages of compact structure, small occupied space and reduction of shaking caused by mechanical wear.

Description

TECHNICAL FIELD

[0001] The utility model relates to related technical field of sofa especially, a handrail lifting mechanism. BACKGROUND

[0002] In modern home life, as the important furniture of the living room space, the comfort and functionality of the sofa are increasingly concerned by consumers. As an important part of the sofa, the armrest not only provides arm support for the user, but also affects the overall appearance and use experience of the sofa to some extent.

[0003] At present, the common sofa armrests on the market are mostly fixed design, that is, the height and angle of the armrest are determined after the sofa is manufactured, and cannot be flexibly adjusted according to the individual needs of the user and the use scene. This fixed armrest design has many limitations. For example, for users of different heights and use habits, the fixed height armrest may not provide the most comfortable arm support, causing the user to feel arm fatigue when using the sofa for a long time. In addition, when watching TV, reading books or engaging in other leisure activities, users may need to adjust the armrest height according to different postures to obtain better support effect, but the fixed armrest obviously cannot meet this demand.

[0004] In order to improve the above problems, some sofa armrests with simple adjustment function appear on the market, such as changing the angle or height of the armrest by manual rotation or stretching. However, these adjustment methods are usually cumbersome to operate, and the user needs to spend a certain amount of time and effort to adjust, and the adjustment accuracy and stability are also difficult to guarantee. Especially in the case of frequent adjustment of the armrest height, the manual adjustment method is obviously not convenient and efficient. And some electric lifting armrests rely on multi-stage connecting rod or gear transmission system, although they can realize height adjustment, but the structure is complex, occupies large space, and long-term use is easy to appear the shaking problem caused by mechanical wear, which affects the support stability. UTILITY MODEL CONTENTS

[0005] In order to overcome at least one of the defects of the prior art described above, the utility model provides a handrail lifting mechanism. The problem of armrest adjustment can be solved, and the structure is compact, the operation is stable and the control is convenient.

[0006] The technical scheme adopted by the utility model to solve the problem is:

[0007] The application discloses a handrail lifting mechanism which comprises a driving piece, a track piece and a sliding piece.

[0008] By driving the sliding piece to reciprocate in the sliding groove of the track piece through the driving piece, the handrail is lifted, and compared with manual rotation or stretching, the operation is more convenient and fast, and the operation time and energy of a user can be reduced.

[0009] Further, the track piece is provided with at least one.

[0010] By adopting the above scheme, the sliding piece is supported in multiple directions, the stress distribution is more uniform, the risk of tilting or jamming is significantly reduced, the multi-track design can disperse the lateral force, and deformation or wear caused by stress concentration of a single track is avoided.

[0011] Further, the sliding piece comprises a first assembly piece and a second assembly piece.

[0012] By adopting the above scheme, the sliding piece forms a relatively stable structure and can be adapted to multiple sliding grooves, so that the running function of the sliding piece is stable.

[0013] Further, the other end of the second assembly piece is connected with a first assembly plate, and the first assembly plate is used for assembly with the handrail.

[0014] By adopting the above scheme, the first assembly plate can increase the contact area, thereby dispersing the vibration and impact force through large-area contact, reducing the shaking in the handrail lifting process, and providing a more stable use experience.

[0015] Further, a second assembly plate is arranged between the fixed part and the sofa or the iron frame, the second assembly plate is fixedly connected with the sofa or the iron frame, and the second assembly plate is rotationally connected with the fixed part.

[0016] By adopting the above scheme, the rotational connection can reduce the rigid force between the fixed part and the sofa or the iron frame, avoid wear and direct collision, and thus improve the service life.

[0017] Further, an integrated assembly is arranged between the slider, the first assembly and the second assembly, and is used to fix the three.

[0018] By adopting the above scheme, the integrated assembly can pre-assemble the slider and the assembly on the production line to form a standardized module, and only needs to be connected with the track and the driving mechanism on site, thereby significantly shortening the assembly time; if the slider is worn or the assembly is deformed, the integrated assembly module can be replaced as a whole, without the need to disassemble adjacent components, thereby reducing the maintenance difficulty and downtime.

[0019] Further, the integrated assembly comprises a first assembly hole, a second assembly hole and a slider assembly hole, and the number of the first assembly hole, the second assembly hole and the slider assembly hole is two or more.

[0020] By adopting the above scheme, the slider, the first assembly and the second assembly can be fixed on the integrated assembly by means of bolts passing through the first assembly hole and the second assembly, bolts passing through the second assembly hole and the first assembly, and bolts passing through the slider assembly hole and the slider, thereby reducing the complexity of separate assembly.

[0021] Further, the slider corresponds to the cross-sectional structure of the sliding groove.

[0022] By adopting the above scheme, when the slider moves in the sliding groove, the slider and the sliding groove form bidirectional constraint, thereby effectively preventing the lateral overturning of the slider due to eccentric load or impact.

[0023] Further, the armrest lifting mechanism further comprises a shell, the shell comprises a wrapping shell assembled with a sofa or an iron frame and a cover connected with the armrest, the wrapping shell has a containing cavity, the track is fixed in the containing cavity, the fixed part of the driving part is fixed in the containing cavity, and the sliding part is fixed with the cover, so that the cover can be lifted relative to the wrapping shell.

[0024] By adopting the above scheme, the track and the driving part can be accommodated and supported, and mechanical protection and electromagnetic shielding can be provided, and a control panel or control keys can be embedded according to actual needs.

[0025] Further, the lifting height range of the armrest is 30-400mm.

[0026] By adopting the above scheme, most of the daily needs can be met.

[0027] In summary, the armrest lifting mechanism has the following technical effects:

[0028] 1. Through the driving piece, automation control is realized, a user only needs to touch a button or a touch screen control to complete armrest height adjustment, without manual rotation or stretching, so that operation time is greatly shortened;

[0029] 2. The driving piece, the track piece and the sliding piece adopt a modular design, through adjustment of the armrest height, a user can find the most suitable arm support angle for himself / herself, and arm fatigue caused by long-time use is reduced;

[0030] 3. The sliding groove adopts an embedded design, is seamlessly combined with a sofa frame, appearance is simple and beautiful, and the problems of traditional exposed tracks, such as dust accumulation and damage, are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a shell structure schematic view of an embodiment of the utility model;

[0032] Figure 2 It is a partial explosion structure schematic view with a shell of an embodiment of the utility model;

[0033] Figure 3 It is a sliding groove and sliding block exploded structure schematic view of an embodiment of the utility model;

[0034] Figure 4 It is an explosion structure schematic view of an embodiment of the utility model;

[0035] Figure 5 It is a three-dimensional structure schematic view of an integrated assembly of an embodiment of the utility model.

[0036] Among them, the meaning of the reference signs is as follows: 1, driving piece; 11, fixed part; 12, movable part; 2, track piece; 21, sliding groove; 3, sliding piece; 31, first assembly part; 32, second assembly part; 33, sliding block; 34, first assembly plate; 35, second assembly plate; 4, integrated assembly; 41, first assembly hole; 42, second assembly hole; 43, sliding block assembly hole; 5, shell; 51, wrapping shell; 511, containing cavity; 52, cover body. DETAILED DESCRIPTION

[0037] In order to better understand and implement, the technical solutions in the embodiments of the utility model will be clearly and completely described and discussed below in combination with the drawings of the utility model. Obviously, only some examples of the utility model are described here, not all examples. Based on the embodiments in the utility model, all other examples obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0038] For the convenience of understanding the embodiments of the present application, the following will be further explained and described with specific embodiments as examples combined with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present application.

[0039] In the description of the present application, it should be pointed out that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0041] The present application is embodiment 1 Figures 1-5 As shown in the drawing, a kind of handrails lifting mechanism is disclosed, including driving piece 1, track piece 2 and sliding piece 3, the driving piece 1 includes fixed part 11 and movable part 12, the fixed part 11 is used to be fixed with sofa or iron stand, the track piece 2 has the sliding groove 21 being arranged along vertical direction, the track piece 2 is used to be fixed with sofa or iron stand, the sliding piece 3 moves synchronously with the movable part 12, the sliding piece 3 reciprocating motion along the direction of the sliding groove 21 to be used to drive handrails to lift, sliding piece 3 reciprocating motion in the sliding groove 21 of track piece 2 by driving piece 1, realize handrails to lift, compared with manual rotation or stretching and the like mode, operation is more simple and quick, can reduce the operation time and energy of user.Meanwhile, the matching structure of driving piece 1 and track piece 2 can realize more accurate adjustment and more stable operation, improve adjustment precision and stability, with compact structure, small space occupation and the advantages of reducing mechanical wear and tear caused by shaking.

[0042] In some embodiments, the driving member 1 adopts a push rod motor or a screw motor. In the push rod motor, the movable part 12 is an extendable telescopic rod body, and the fixed part 11 is a sleeve and a motor part for accommodating the telescopic rod body. In the screw motor, the movable part 12 is a screw sliding part 3 that slides along the direction of the screw, and the fixed part 11 is a screw body and a motor part. In this embodiment 1, the driving member 1 adopts a push rod motor, and the sliding part 3 includes a first assembly part 31, a second assembly part 32, and a sliding block 33. The first assembly part 31 is fixedly connected with the movable part 12. One end of the second assembly part 32 is fixed with the first assembly part 31. The number of the second assembly part 32 is consistent with the number of the track member 2. Each second assembly part 32 is provided with a sliding block 33 that slides in the sliding groove 21. Preferably, the track member 2 is provided with at least one, preferably two, so that the sliding part 3 is supported in multiple directions, the stress distribution is more uniform, the risk of tilting or jamming is significantly reduced, the multi-track design can disperse the lateral force, avoid deformation or wear caused by stress concentration of a single track, form a relatively stable structure of the sliding part 3, and adapt to multiple sliding grooves 21, thereby ensuring stable operation function.

[0043] Optionally, a first assembly plate 34 can be connected to the other end of the second assembly part 32, and the first assembly plate 34 is used for assembly with the handrail. The first assembly plate 34 is connected with the end of the second assembly part 32 in a perpendicular manner, and the connection mode includes but is not limited to clamping, bolt, or iron stand fixed connection. The second assembly plate 35 is rotatably connected with the fixed part 11, which can reduce the rigid force between the fixed part 11 and the sofa or iron stand, avoid wear and direct collision, and thereby improve the service life. At the same time, the rotatable second assembly plate 35 can change the installation angle, that is, even if assembled with a non-horizontal sofa or iron stand, the driving force of the driving member 1 in the vertical direction can still be maintained.

[0044] In order to improve the convenience and stability of connection, an integrated assembly 4 is arranged between the sliding block 33, the first assembly 31 and the second assembly 32, and is used to fix the three assemblies. The integrated assembly 4 can pre-assemble the sliding block 33 and the assembly on the production line to form a standardized module, and only needs to be connected with the track member 2 and the driving mechanism on site, which significantly shortens the assembly time. If the sliding block 33 is worn or the assembly is deformed, the integrated assembly 4 module can be replaced as a whole, without the need to disassemble adjacent components, thereby reducing the difficulty of maintenance and downtime. Preferably, the integrated assembly 4 is an L-shaped sheet metal member, which includes a first surface and a second surface. The upper half of the first surface is provided with a first assembly hole 41 for fixing the second assembly 32 through bolts, and the lower half of the first surface is provided with a second assembly hole 42 for fixing the first assembly 31 through bolts. The second surface is provided with a sliding block assembly hole 43 for fixing the sliding block 33 through bolts. The sliding block 33, the first assembly 31 and the second assembly 32 can be fixed on the integrated assembly 4, thereby reducing the complexity of separate assembly. Preferably, the number of the first assembly hole 41, the second assembly hole 42 and the sliding block assembly hole 43 is two or more. In this embodiment 1, the number of the first assembly hole 41, the second assembly hole 42 and the sliding block assembly hole 43 is two. The first assembly 31 is a horizontal rod arranged transversely, and the second assembly 32 is arranged with two and vertically connected to the upper side of the two ends of the first assembly 31, for assembly with the handrail. The arrangement direction of the first assembly hole 41, the second assembly hole 42 and the sliding block assembly hole 43 is vertical, so as to ensure the overall stability of the sliding member 3.

[0045] In this embodiment 1, the sliding block 33 corresponds to the cross-sectional structure of the sliding groove 21, and is preferably T-shaped. When the sliding block 33 moves in the sliding groove 21, the flange of the T-shaped sliding block 33 is in contact with the side wall of the sliding groove 21, forming a bidirectional constraint, which effectively prevents the sliding block 33 from being turned laterally due to unbalanced load or impact. Preferably, the sliding groove 21 is arranged with two and arranged oppositely, so as to cope with the structure of the sliding block 33 located on the side away from each other of the two second assemblies 32.

[0046] In the above embodiment, the shell 5 can also be added to wrap the driving member 1, the track member 2 and the sliding member 3. Specifically, the shell 5 includes a wrapping shell 51 assembled with a sofa or a frame and a cover 52 connected with an armrest. Optionally, in some embodiments, the shell 5 can also serve as an armrest. In other embodiments, the wrapping shell 51 can also serve as a part of the frame and the cover 52 serves as an armrest. In the present embodiment 1, the wrapping shell 51 has a receiving cavity 511, two track members 2 are fixed to two opposite side walls in the receiving cavity 511 and arranged vertically, the fixed part 11 of the driving member 1 is fixed to the bottom wall in the receiving cavity 511 and the driving direction of the driving member 1 is consistent with the sliding groove 21 direction of the track member 2, and the sliding member 3 is fixed with the cover 52 so that the cover 52 can be lifted relative to the wrapping shell 51. When the first assembly plate 34 exists, the first assembly plate 34 is fixedly assembled with the inner side of the cover 52 to support and drive the cover 52 to be lifted. The wrapping shell 51 and the cover 52 are generally rectangular, forming an armrest of a sofa, and can cover the driving member 1, the track member 2 and the sliding member 3, improving safety and aesthetics, and providing accommodation and bearing for the track member 2 and the driving member 1, providing mechanical protection and electromagnetic shielding, and embedded control panels or control buttons can be selected according to actual needs. In the present embodiment 1, the lifting height range of the armrest is 30mm-400mm, which can meet most daily needs.

[0047] Preferably, the wrapping shell 51 is made of ABS material, the cover 52 is integrated with a touch panel on the surface, and the controller of the driving member 1 communicates with the touch panel through a CAN bus. The lifting height can be set through the touch screen, the system feedbacks position information in real time, and the accuracy is ±1mm. The joint of the shell 5 is provided with a silica gel sealing strip, and the dustproof level reaches IP54.

[0048] In work, the user inputs a target height or an ascending and descending gear through the touch panel, the controller calculates the required stroke of the driving member 1, the movable part 12 pushes the sliding member 3 to move, the sliding block 33 slides along the track member 2 to the specified position, the Hall sensor detects the position signal, and the driving member 1 stops and self-locks. The whole process takes less than 8 seconds, and the noise is lower than 45dB. After 5000 times of continuous lifting and lowering of the mechanism, the wear of the track member 2 is less than 0.1mm, and the gap between the sliding block 33 and the sliding groove 21 remains within the design value of 0.5mm. Compared with the traditional manual adjustment mode, the operation efficiency is improved by times, and the long-term use stability is improved by more than 60%.

[0049] In summary, the armrest lifting mechanism has the following technical effects:

[0050] 1. The automation control is realized through the driving member 1, the user only needs to touch the button or the touch screen to complete the height adjustment of the armrest, without manual rotation or stretching, which greatly shortens the operation time;

[0051] 2. The driving member 1, the track member 2 and the sliding member 3 adopt a modular design, and users can find the most suitable arm support angle by adjusting the height of the handrail, thereby reducing arm fatigue caused by long-time use.

[0052] 3. The sliding groove 21 adopts an embedded design and is seamlessly combined with the sofa frame, so that the appearance is simple and beautiful, and the problems of easy dust accumulation and easy damage of the traditional exposed track are avoided.

[0053] The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above-mentioned embodiments, and also include technical schemes composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled persons in the technical field, under the premise of not departing from the principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the protection scope of the utility model.

Claims

1. A handrail lift mechanism characterized by, The utility model relates to a sofa armrest lifting device, which comprises the following parts: a driving part (1) comprising a fixed part (11) and a movable part (12), the fixed part (11) being used for being fixed with a sofa or an iron frame; a track part (2) having a sliding groove (21) arranged along the vertical direction, the track part (2) being used for being fixed with a sofa or an iron frame; a sliding part (3) moving synchronously with the movable part (12), the sliding part (3) reciprocating along the direction of the sliding groove (21) to drive the armrest to lift.

2. A handrail lift mechanism according to claim 1, wherein The track part (2) is provided with at least one.

3. A handrail lift according to claim 2, wherein The sliding part (3) comprises: a first assembly part (31) fixedly connected with the movable part (12); a second assembly part (32) having one end fixedly connected with the first assembly part (31), the number of the second assembly part (32) being consistent with the number of the track part (2), each second assembly part (32) being provided with a sliding block (33) slidingly arranged in the sliding groove (21).

4. A handrail lift mechanism according to claim 3, wherein The other end of the second assembly part (32) is connected with a first assembly plate (34) used for being assembled with an armrest.

5. A handrail lift mechanism according to claim 1, wherein A second assembly plate (35) is arranged between the fixed part (11) and the sofa or the iron frame, the second assembly plate (35) being fixedly connected with the sofa or the iron frame, and the second assembly plate (35) being rotatably connected with the fixed part (11).

6. A handrail lift mechanism according to claim 3, wherein An integrated assembly part (4) is arranged between the sliding block (33), the first assembly part (31) and the second assembly part (32), the integrated assembly part (4) being used for fixing the sliding block (33), the first assembly part (31) and the second assembly part (32).

7. A handrail lift according to claim 6, wherein The integrated assembly part (4) comprises a first assembly hole (41), a second assembly hole (42) and a sliding block assembly hole (43), the number of the first assembly hole (41), the second assembly hole (42) and the sliding block assembly hole (43) being more than two.

8. A handrail lift mechanism according to claim 3, wherein The sliding block (33) corresponds to the sectional structure of the sliding groove (21).

9. A handrail lift according to any one of claims 1-8, characterized in that The utility model further comprises a shell (5) comprising a wrapping shell (51) assembled with a sofa or an iron frame and a cover (52) connected with an armrest, the wrapping shell (51) having an accommodating cavity (511), the track part (2) being fixed in the accommodating cavity (511), the fixed part (11) of the driving part (1) being fixed in the accommodating cavity (511), and the sliding part (3) being fixed with the cover (52) so that the cover (52) can lift relative to the wrapping shell (51).

10. A handrail lift according to any one of claims 1-8, characterized in that The lifting height range of the armrest is 30mm-400mm.

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