A by-wire infinitely variable adjustment device for adjusting the height or inclination angle of furniture

Abstract

The present application relates to the technical field of furniture fittings, in particular to a device capable of adjusting the height or inclination angle of furniture, and more particularly to a linear control stepless adjusting device capable of adjusting the height or inclination angle of furniture. The structure comprises a support seat, a support arm is hingedly connected to the front end of the support seat, a slide is arranged on the side surface of the support arm, a threaded screw rod is arranged in the slide, a support rod is hingedly connected to the middle part of the support seat, a stepless adjusting mechanism is fixedly connected to the other end of the support rod, the other end of the stepless adjusting mechanism is clamped on the threaded screw rod, and the other end of the stepless adjusting mechanism can be separated from the clamping part of the threaded screw rod and then clamped again by pulling the pull rope.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture fittings, in particular to a device capable of adjusting the height or angle of furniture, and more particularly to a linear control stepless adjusting device capable of adjusting the height or inclination angle of a table or chair. BACKGROUND

[0002] Under the prior art, the height adjustment of tables and chairs mainly has the following technical solutions:

[0003] I. Mechanical types such as U-shaped slot angle adjuster, one-word pull rod adjuster, and herringbone support angle adjuster, etc. These angle adjusters have the following disadvantages:

[0004] 1. All are provided with a card point, the number of card points is different, the card point is fixed, the adjustable angle is also fixed, and it is impossible to realize stepless adjustment. Multiple angle adjusters cannot be used in series to realize height adjustment and angle adjustment.

[0005] 2. Height or angle adjustment needs to go through the entire card point process, i.e. all card points need to be passed through, and then the posture locking state can be released, and the required height or angle can be found in the next cycle.

[0006] 3. The gap between the devices is relatively large, and there is a shaking and metal abnormal sound phenomenon during operation.

[0007] 4. When multiple angle adjusters are used in parallel, they cannot effectively coordinate and operate at the same frequency. When the non-coordinated state is stuck, it is difficult to handle.

[0008] II. Pneumatic or hydraulic control devices. This device can realize random angle or height adjustment through a pull wire. This equipment is greatly affected by the temperature of the use environment, has a risk of running safety, and there are occasional bursts nationwide, which endanger personal safety. This equipment is almost impossible to enter a school.

[0009] III. Joint type angle adjusting devices have the following disadvantages:

[0010] 1. Most of them need to be operated by both hands or even two people at the same time to realize height or angle adjustment.

[0011] 2. The joints that can be operated by one hand have a complex design structure, large size, high cost, and limited application range.

[0012] 3. When the joint size is small, the force arm is short, the torque that can be withstood is small, and the application range is limited.

[0013] 4. The number of card points is limited, and each time the card points are aligned and engaged, it needs to be adjusted up and down, and the adjustment experience is poor. SUMMARY

[0014] In order to solve the problems of the prior art, the application provides a wire control stepless adjusting device capable of adjusting the height or inclination angle of furniture, which is simple in structure, safe and stable, low in manufacturing cost, convenient in wire control angle or height adjusting operation and can be widely applied to angle or height adjusting functions of various furniture, mechanical equipment and the like.

[0015] The technical scheme adopted by the application is as follows:

[0016] The wire control stepless adjusting device capable of adjusting the height or inclination angle of furniture comprises a support seat, a support arm hinged at the front end of the support seat, a sliding channel arranged on the side surface of the support arm, a threaded screw rod arranged in the sliding channel, a support rod hinged at the middle part of the support seat, a stepless adjusting mechanism fixedly connected to the other end of the support rod, and the other end of the stepless adjusting mechanism is clamped on the threaded screw rod, and the other end of the stepless adjusting mechanism can be separated from the clamping part of the threaded screw rod and clamped again after moving through the pulling of a pulling rope.

[0017] Preferably, the stepless adjusting mechanism comprises an outer tube hinged at the rear end of the support rod, an inner rod telescopically arranged in the front end of the outer tube, a pulling rope connected to the rear end of the inner rod, the pulling rope extending out of the rear end of the outer tube through the inner tube, a clamping piece connected to the front end of the inner rod, the front part of the clamping piece is semicircularly recessed, a thread tooth part engaged with the threaded screw rod is arranged on the inner wall of the front part of the clamping piece, a spring is arranged on the inner rod, and the spring is located between the rear wall of the clamping piece and the front end of the outer tube.

[0018] Preferably, a clamping groove is arranged at the rear end of the inner rod, a clamping block is arranged at the front end of the pulling rope, and the clamping block is clamped in the clamping groove to realize the connection between the pulling rope and the inner rod.

[0019] Preferably, the pulling rope is connected with an external control handle.

[0020] The technical scheme provided by the application has the following beneficial effects:

[0021] 1. The combination of the threaded screw rod and the clamping piece in the form of half nut can realize infinite clamping points, the clamping points are many, the force bearing surface is large, the gap is small, and the structure is safe and stable.

[0022] 2. The position clamping point and the support point are arranged at two different positions, the force bearing points are many, the support point is the inclined surface of the sliding channel of the support arm, the pressure bearing capacity is strong, and a higher torque can be borne.

[0023] 3. When multiple devices are combined for use, synchronous and collaborative work can be realized, and the probability of equipment jamming caused by non-collaborative mechanical parts is low.

[0024] 4. The device has simple structure, low manufacturing cost, convenient angle or height adjustment operation, and can be widely applied in angle or height adjustment function of various furniture and mechanical equipment. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0026] Figure 1 Fig. 1 is a structural schematic diagram of a wire control stepless adjustment device for adjusting height or inclination angle of furniture according to the present application;

[0027] Figure 2 Fig. 2 is an internal structural schematic diagram of the wire control stepless adjustment device for adjusting height or inclination angle of furniture according to the present application;

[0028] Figure 3 Fig. 3 is a structural schematic diagram of a stepless adjustment mechanism of the wire control stepless adjustment device for adjusting height or inclination angle of furniture according to the present application;

[0029] Figure 4 Fig. 4 is a parallel combination structural schematic diagram of the wire control stepless adjustment device for adjusting height or inclination angle of furniture according to the present application;

[0030] Figure 5 Fig. 5 is a use state diagram of the wire control stepless adjustment device for adjusting height or inclination angle of furniture according to the present application (for adjusting height of a chair);

[0031] Figure 6 Fig. 6 is a use state diagram of the wire control stepless adjustment device for adjusting height or inclination angle of furniture according to the present application (for adjusting height and table surface angle of a table). DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail with reference to the drawings.

[0033] Embodiment 1

[0034] As shown in the accompanying drawings, Figures 1-3As shown in the drawings, the embodiment provides a linear control stepless adjusting device capable of adjusting the height or the tilting angle of furniture, which comprises a support base 1, a support arm 2 hingedly connected to the front end of the support base 1, a slide 3 arranged on the side of the support arm 2, a threaded screw rod 4 arranged in the slide 3, a support rod 10 hingedly connected to the middle of the support base 1, one end of a stepless adjusting mechanism fixedly connected to the other end of the support rod 10, and the other end of the stepless adjusting mechanism clamped on the threaded screw rod 4 and capable of being separated from the clamped position of the threaded screw rod 4 and then clamped again by pulling the pull rope 5.

[0035] As shown in the drawings, Figures 2-3 The stepless adjusting mechanism in the embodiment comprises an outer tube 6 hingedly connected to the support rod 10 at the rear end, an inner rod 7 telescopically arranged in the front end of the outer tube 6, the pull rope 5 connected to the rear end of the inner rod 7, the pull rope 5 capable of being connected to a control handle after extending out of the outer tube 6 at the rear end, a clamping piece 8 connected to the front end of the inner rod 7, the front part of the clamping piece 8 in the embodiment being semicircular and concave, a thread tooth part arranged on the inner wall of the front part and engaged with the threaded screw rod 4, and a spring 9 arranged on the inner rod 7 and located between the rear wall of the clamping piece 8 and the front end of the outer tube 6.

[0036] Under the pulling of the pull rope 5, the inner rod 7 is retracted to the inner side of the outer tube 6, at this time, the whole clamping piece 8 is separated from the threaded screw rod 4 and can freely move in the slide 3, so as to realize the adjustment of the folding structure of the whole support base 1 and support arm 2, after the adjustment is completed, the pull rope 5 is loosened, the clamping piece 8 is clamped on the threaded screw rod 4 again under the action of the spring 9, and the position is locked.

[0037] The pull rope 5, the inner rod 7 and the clamping piece 8 are pulled and moved backward, the spring 9 on the inner rod 7 is compressed, the clamping piece 8 is separated from the threaded screw rod 4, the positioning function is released, the inner rod 7 drives the clamping piece 8 to freely slide up and down in the slide 3 on the side of the support arm 2 and adjust the posture, and it is ensured that the clamping piece 8 and the threaded screw rod 4 are always in the vertical state at any position, the pull rope 5 is loosened, the inner rod 7 and the clamping piece 8 are reset under the elastic force of the spring 9, the clamping piece 8 is completely attached to the threaded screw rod 4, and the positioning function is realized.

[0038] The rear end of the inner rod 7 in the embodiment is provided with a clamping groove 71, the front end of the pull rope 5 is provided with a clamping block 51, the clamping block 51 is clamped in the clamping groove 71, the pull rope 5 is connected to the inner rod 7, and the inner rod is provided with a gasket 61 between the spring 9 and the front end of the outer tube 6.

[0039] Embodiment two

[0040] As shown in the drawings, Figure 4As shown, this embodiment provides a wired stepless adjustment device in parallel configuration. Two sets of wired stepless adjustment devices 11 are connected in parallel via a connecting rod 16 and can be applied under the furniture tabletop to jointly adjust the tabletop angle.

[0041] Example 3

[0042] As attached Figure 5 As shown, this embodiment provides a structure in which two sets of wire-controlled stepless adjustment devices in parallel are applied to the chair legs. In this embodiment, the wire-controlled stepless adjustment device 11, after being connected in parallel, is connected to the chair base 12 and the chair seat 13 respectively. By adjusting the wire-controlled stepless adjustment device 11, the height or angle of the chair seat 13 can be adjusted.

[0043] Place both feet on the two bases 12 of the chair, pull the ropes with both hands at the same time to lift the chair seat upwards, adjust the seat height to below your knee joint, and then release the ropes to adjust the seat seat to the desired height.

[0044] Pull the ropes with both hands at the same time to press down the seat 13. The seat will then fold down and fit against the base 12. Then fold the backrest and cushion to the seat.

[0045] Example 4

[0046] As attached Figure 6 As shown, this embodiment provides a wired stepless adjustment device in series and parallel configurations applied to a structure under a desktop. In this embodiment, the wired stepless adjustment device 11 is first connected in parallel and then in series, and is connected to the base 14 of the table and the desktop 15 of the table respectively. By adjusting the wired stepless adjustment device 11, the height and angle of the desktop 15 can be adjusted.

[0047] Step on the table base 14 with your feet, and pull the pull rope and the top edge of the first layer with both hands to lift the table up. Adjust the height of the first layer to 5 cm above your knees. Then, grasp the pull ropes and support base on both sides of the second layer with both hands and lift the table up. Adjust the height of the second layer to a position where your elbows are naturally flat. Finally, extend your right hand to the right edge of the table and gently grasp the table and pull rope to adjust the table to the angle you need.

[0048] Gently grasp the right edge of the tabletop with your right hand and pull the pull rope to fold the tabletop up. Simultaneously pull up the second layer pull rope and support base with both hands to fold up the second layer. Simultaneously pull up the top pull rope and top edge of the first layer with both hands to fold up the first layer. The first layer edge fits snugly against the base 14.

[0049] The pull ropes in the above embodiments can all be stretched and controlled by a control handle externally mounted on the table and chair body. The control handle is not limited to the existing handle, rotary handle, or other structural methods.

[0050] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A by-wire infinitely variable adjustment device capable of adjusting the height or the inclination angle of furniture, comprising a support base, the front end of which is hingedly connected to a support arm, characterized in that, The support arm is provided with a slide on the side, a screw rod is arranged in the slide, a support rod is hingedly connected in the middle of the support seat, a stepless adjusting mechanism is fixedly connected to the other end of the support rod, the other end of the stepless adjusting mechanism is clamped on the screw rod, and the stepless adjusting mechanism can be separated from the clamping position of the screw rod and re-clamped after moving by pulling of the pull rope. The stepless adjusting mechanism comprises an outer tube hingedly connected to the rear end of the support rod, an inner rod is sleeved in the front end of the outer tube, the rear end of the inner rod is connected to the pull rope, the pull rope extends out of the rear end of the outer tube through the inside of the outer tube, the front end of the inner rod is connected to a clamping piece, the front part of the clamping piece is semicircularly recessed, a thread tooth part engaged with the screw rod is arranged on the inner wall of the front part of the clamping piece, a spring is arranged on the inner rod, and the spring is located between the rear wall of the clamping piece and the front end of the outer tube. The rear end of the inner rod is provided with a clamping groove, the front end of the pull rope is provided with a clamping block, and the clamping block is clamped in the clamping groove to realize the connection of the pull rope and the inner rod. A gasket is arranged between the spring and the front end of the outer tube.

2. A by-wire infinitely variable adjustment device capable of adjusting the height or the inclination angle of furniture according to claim 1, characterized in that, Two groups of the wire-controlled stepless adjusting devices are connected by a connecting rod and used together.

3. The linear control infinitely adjustable device for adjusting the height or the inclination angle of furniture according to claim 1, characterized in that, The pull rope is connected to an external control handle.

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