CN216135499U

CN216135499U - Automatic lifting device for backrest

Info

Publication number: CN216135499U
Application number: CN202121127701.3U
Authority: CN
Inventors: 范亚萍; 宋家乐; 王唯任
Original assignee: Weifang University of Science and Technology
Current assignee: Weifang University of Science and Technology
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2022-03-29
Anticipated expiration: 2031-05-25

Abstract

The utility model is suitable for various back lifting devices technical field, provides a back automatic lifting device, comprising: a backrest frame; the base support, its bottom with back skeleton bottom swing joint, the base support bottom is equipped with a shock attenuation frame, a swing joint extensible member on the shock attenuation frame, extensible member top swing joint in on the back skeleton. Therefore, the proper damping adjusting structure is additionally arranged on the base of the lifting adjusting mechanism, so that the joint of the lifting adjusting mechanism is protected, the damping effect is improved, the service life of the device is prolonged, and the comfort level of a user is also improved.

Description

Automatic lifting device for backrest

Technical Field

The utility model relates to the technical field of various backrest lifting equipment, in particular to an automatic backrest lifting device.

Background

Along with the improvement of living standard of people, various seats, health care massage seats and other equipment containing an automatic adjusting backrest come into play, the traditional seat backrest has the function of adjusting height and angle in the aspect of adjustment, however, after the hydraulic lifting device or other lifting mechanisms are used for adjustment during adjustment, when a user sits down suddenly, the impact force on the lifting adjusting mechanism of the seat backrest is large, after the seat backrest is used for a long time, large gaps are easily caused at the movable connection parts of the lifting adjusting mechanism, even the connection parts are damaged, the service life of the seat is influenced, and therefore the damping structure is designed, and the damping structure is particularly important for the impact on the lifting mechanism during sitting down.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks, an object of the present invention is to provide an automatic backrest lifting device, which can protect the connection point of the lifting adjusting mechanism, increase the damping effect, and increase the service life of the device by adding a proper damping adjusting structure on the base of the lifting adjusting mechanism.

In order to achieve the above object, the present invention provides an automatic backrest lifting device, comprising: a backrest frame; the base support, its bottom with back skeleton bottom swing joint, the base support bottom is equipped with a shock attenuation frame, a swing joint extensible member on the shock attenuation frame, extensible member top swing joint in on the back skeleton.

According to the automatic backrest lifting device, the damping frame comprises two cross beams, a supporting rod and a damping spring, wherein the supporting rod and the damping spring are arranged in the middle of the cross beams.

According to the automatic backrest lifting device, the bottom of the telescopic piece is movably connected to the supporting rod.

According to the automatic backrest lifting device, the two ends of the supporting rod are provided with the cylindrical protrusions, and the tops of the cylindrical protrusions are provided with the limiting plates.

According to the automatic backrest lifting device, the top of the cross beam is provided with the boss matching hole and the limiting plate matching hole which are arranged corresponding to the cylindrical boss and the limiting plate.

According to the automatic backrest lifting device, the damping spring is sleeved on the cylindrical protrusion, the top of the damping spring is in contact with the bottom of the limiting plate, and the bottom of the damping spring is in contact with the inner wall of the protrusion matching hole.

The telescopic piece of the automatic backrest lifting device is an electric hydraulic lifting mechanism.

The utility model provides an automatic lifting device for a backrest, which comprises: the backrest framework is used for supporting other auxiliary pieces of the whole backrest; base support, its bottom with back skeleton bottom swing joint, swing joint adopts be hinge structure, realizes that the back skeleton can be along the hinge position rotates, does the basis for the angle modulation of subsequent back, base support bottom is equipped with a shock attenuation frame, a swing joint extensible member on the shock attenuation frame, extensible member top swing joint in on the back skeleton, set up like this, when the extensible member stretches out and draws back, can drive the back skeleton along base support rotate, realize angle modulation, set up the extensible member on the shock attenuation frame simultaneously, when the user used the back, the shock attenuation frame can realize carrying out certain cushioning effect to the extensible member, prevent that violent impact from appearing and lead to the tie point of extensible member to damage, influence the life of extensible member.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the shock mount of the present invention;

FIG. 3 is a schematic view of the support rod of the present invention;

FIG. 4 is an enlarged cross-sectional view of the joint between the cross member and the support rod according to the present invention;

in the figure, 1-support rod, 101-support rod body, 102-damping spring, 103-cylindrical protrusion, 104-limiting plate, 105-pin seat mounting hole, 2-cross beam, 201-limiting plate matching hole, 202-cross beam body, 203-protrusion matching hole, 3-base support, 4-backrest framework, 5-pin seat, 6-inner lifting rod, 7-outer lifting rod, 8-motor and 9-pin hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

Referring to fig. 1, the utility model provides an automatic backrest lifting device, which comprises a support rod 1, a cross beam 2, a base support 3, a backrest framework 4, a pin base 5, an inner lifting rod 6, an outer lifting rod 7, a motor 8 and a pin hole 9, wherein the backrest framework 4 is used for supporting other auxiliary parts of the whole backrest, the pin base 5 connected with the inner lifting rod 6 is arranged, the bottom of the base support 3 is movably connected with the bottom of the backrest framework 4, the movable connection adopts a hinge structure, the backrest framework 4 can rotate along the hinge position, a foundation is made for subsequent angle adjustment of the backrest, the bottom of the base support 3 is provided with a shock absorption frame, the shock absorption frame is movably connected with an expansion piece, the top of the expansion piece is movably connected with the backrest framework 4, and the arrangement is that when the expansion piece expands and contracts, can drive back skeleton 4 along base support 3 rotate, realize angle modulation, set up the extensible member simultaneously on the shock attenuation frame, when the user used the back, the shock attenuation frame can realize carrying out certain cushioning effect to the extensible member, prevents that violent impact from appearing and leads to the tie point damage of extensible member, influences the life of device.

Referring to fig. 2 and 3, preferably, the shock absorption frame of the present invention includes a support rod 1 and two cross beams 2, the support rod 1 includes a support rod main body 101, a shock absorption spring 102, a cylindrical protrusion 103, a limiting plate 104 and a pin seat mounting hole 105, the support rod 1 is disposed on the top of the two cross beams 2 and spans the two cross beams 2, the cylindrical protrusions 103 disposed on both ends of the support rod 1 and the limiting plate 104 disposed on the top of the cylindrical protrusion 103 are disposed in a step shape, and the shock absorption spring 102 can be well mounted and sleeved on the cylindrical protrusion 103 by the step shape. A pin boss mounting hole 105 is formed in the middle of the support rod main body 101 to ensure the fixing effect of the pin boss 5 on the support rod 1.

Referring to fig. 2 and 4, in addition, the two cross beams 2 of the utility model include a limiting plate matching hole 201, a cross beam main body 202 and a protrusion matching hole 203, the protrusion matching hole 203 is matched with the cylindrical protrusion 103 on the support rod 1, the cylindrical protrusion 103 can slide along the protrusion matching hole 203, the limiting plate 104 is arranged inside the limiting plate matching hole 201, meanwhile, the top of the damping spring 102 is in matching contact with the bottom of the limiting plate 104, the bottom of the damping spring 102 is in contact with the inner wall of the protrusion matching hole 203, and it is ensured that when the support rod 1 moves down, the damping spring 102 can be supported against the bottom of the limiting plate 104 and the top of the protrusion matching hole 203, so as to reduce the impact.

Referring to fig. 1, the telescopic part of the present invention is an electro-hydraulic lifting mechanism, and includes an inner lifting rod 6, an outer lifting rod 7, a motor 8 and a pin hole 9, wherein a pin seat 5 is disposed in the middle of the back frame 4, the top of the inner lifting rod 6 is provided with the pin hole 9 matched with the pin seat 5, so as to ensure that the inner lifting rod 6 can rotate around the pin hole 9 on the pin seat 5, and the bottom of the outer lifting rod 7 is provided with the same pin hole 9 matched with the pin seat 5 disposed in the middle of the support rod 1, so as to realize that the telescopic part can rotate around the pin hole 9 in the bottom of the outer lifting rod 7, when the telescopic part is telescopic, the back frame 4 can rotate on the hinge by a certain angle, the motor 8 is disposed on the side of the outer lifting rod 7, and the telescopic part is controlled to be telescopic by controlling the motor 8, i.e., the relative positions of the inner lifting rod 6 and the outer lifting rod 7.

In this example, when the user uses the backrest, the backrest frame 4 is forced to move downwards, the telescopic member is forced to press the support rod 1 to move downwards, the damping spring 102 moves downwards and the supporting force of the damping spring 102 acts, and the downward movement force of the backrest frame 4 is partially buffered by the damping spring 102, so that the impact force on the joint of the telescopic member is reduced, and the service life is prolonged.

In summary, the present invention provides an automatic backrest lifting device, which includes: the backrest framework is used for supporting other auxiliary pieces for mounting the backrest; base support, its bottom with back skeleton bottom swing joint, swing joint adopts be hinge structure, realizes that the back skeleton can be along the hinge position rotates, does the basis for the angle modulation of subsequent back, base support bottom is equipped with a shock attenuation frame, a swing joint extensible member on the shock attenuation frame, extensible member top swing joint in on the back skeleton, set up like this, when the extensible member stretches out and draws back, can drive the back skeleton along base support rotate, realize angle modulation, set up the extensible member on the shock attenuation frame simultaneously, when the user used the back, the shock attenuation frame can realize carrying out certain cushioning effect to the extensible member, prevent that violent impact from appearing and lead to the tie point of extensible member to damage, influence the life of extensible member.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Claims

1. An automatic backrest lifting device, comprising:

a backrest frame;

the base support, its bottom with back skeleton bottom swing joint, the base support bottom is equipped with a shock attenuation frame, a swing joint extensible member on the shock attenuation frame, extensible member top swing joint in on the back skeleton.

2. The automatic backrest lifting device according to claim 1, wherein the shock-absorbing frame comprises two cross beams, a support rod and a shock-absorbing spring arranged in the middle of the cross beams.

3. The automatic backrest lifting device according to claim 2, wherein the bottom of the telescopic member is movably connected to the support rod.

4. The automatic backrest lifting device as claimed in claim 2, wherein the two ends of the support rod are provided with cylindrical protrusions, and the tops of the cylindrical protrusions are provided with limiting plates.

5. The automatic backrest lifting device according to claim 4, wherein the top of the cross beam is provided with a protrusion fitting hole and a limiting plate fitting hole which are arranged corresponding to the cylindrical protrusion and the limiting plate.

6. The automatic backrest lifting device according to claim 5, wherein the damping spring is sleeved on the cylindrical protrusion, the top of the damping spring is in contact with the bottom of the limiting plate, and the bottom of the damping spring is in contact with the inner wall of the protrusion fitting hole.

7. The automatic backrest lifting device according to claim 1, wherein the telescopic member is an electro-hydraulic lifting mechanism.