CN218773629U - Movement mechanism for lifting backrest - Google Patents
Movement mechanism for lifting backrest Download PDFInfo
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- CN218773629U CN218773629U CN202222601180.1U CN202222601180U CN218773629U CN 218773629 U CN218773629 U CN 218773629U CN 202222601180 U CN202222601180 U CN 202222601180U CN 218773629 U CN218773629 U CN 218773629U
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Abstract
The utility model discloses a movement mechanism for lifting a backrest, which comprises a base, an actuator and mechanical extension units arranged at two sides of the base in a mirror image manner; the mechanical extension unit comprises a backrest rotating rod, the actuator is connected to the base and acts on the backrest rotating rod, and the backrest rotating rod is rotatably connected to the base and rotates relative to the base under the driving of the actuator; the movement mechanism comprises a normal sitting state and an auxiliary rising state, and in the normal sitting state, the backrest rotating rod is approximately horizontal and leans against the base; in the auxiliary rising state, the backrest rotating rod is driven by the actuator, the rear end of the backrest rotating rod is lifted up in an emptying way, and the backrest of the sofa is configured to push the back of a human body forwards and upwards along with the rotation of the backrest rotating rod; the backrest rotating rod has the effects of driving the sofa backrest to move forwards and upwards to push the back of a human body, so that the effect of assisting the human body to get up is better, the support for the upper half of the human body is provided, and the safety is better.
Description
Technical Field
The utility model relates to the field of furniture, in particular to motion of lifting back.
Background
In life, people can often see that some old people get up from the seat with great effort, sitting is a simpler action for people with inconvenient actions, but getting up is more difficult, and the old people have more sitting requirements as normal people, and getting up becomes more difficult after sitting for a long time, so that the problem of getting up from the seat always troubles them.
Some manufacturers have developed various seats called geriatric chairs, wherein one of the functions is to assist the user to get up and enable the user to get up and stand on the seats more easily; old man's chair is after evolution development, its inside mechanical stretching device becomes more succinct, improve to only the lifting seat face from whole lifting, nevertheless to the thing to sit on of only lifting seat face, when supplementary rising up, the thing to sit on can only support human buttock, and can't support human back, in the inconvenient crowd of action, except that the legs and feet are inconvenient and the difficulty of rising up, also difficult the rising up because of the difficult power of waist, so this kind of crowd of the latter, when supplementary rising up, not only need obtain the support of buttock and lift, still need obtain the support of back, the thing to sit on needs still supports the first body of human promptly, otherwise when supplementary rising up, has the potential safety hazard of falling backward.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a motion of lifting back, including base, actuator and the mechanical extension unit in the base both sides, mechanical extension unit includes the back dwang, and the back dwang rotates for the base under the drive of actuator to under supplementary state of rising up, back dwang rear end is chosen empty and is lifted up, so that the sofa back can promote human back to the upper front, in order to help rising up, and the effect of visual supplementary rising up is better, and the support to the upper half of human body has been provided moreover, and is safer.
The technical scheme of the utility model is realized like this:
a movement mechanism for lifting a backrest comprises a base, an actuator and mechanical extension units arranged on two sides of the base in a mirror image mode; the mechanical extension unit comprises a backrest rotating rod, the actuator is connected to the base and acts on the backrest rotating rod, and the backrest rotating rod is rotatably connected to the base and rotates relative to the base under the driving of the actuator; the movement mechanism comprises a normal sitting state and an auxiliary rising state, and in the normal sitting state, the backrest rotating rod is approximately horizontal and leans against the base; in the auxiliary rising state, the backrest rotating rod is driven by the actuator, the rear end of the backrest rotating rod is lifted by being emptied, and the sofa backrest is configured to push the back of the human body forwards and upwards along with the rotation of the backrest rotating rod.
The backrest rotating rod in the scheme is a brand-new structure in a mechanical stretching device, does not exist in other products, and never exists in the concept that the sofa backrest independently moves forwards and upwards.
Preferably, a transmission link is arranged between the actuator and the backrest rotating rod, the transmission link is rotatably arranged relative to the base, the actuator is connected with the transmission link, the transmission link is connected with the backrest rotating rod through a backrest rotating rod, when the actuator drives the transmission link to rotate forwards and upwards, the transmission link drives the backrest rotating rod to move, and the backrest rotating rod is further driven to rotate forwards and upwards by the backrest rotating rod.
Preferably, the backrest rotating rod is rotatably connected with a backrest connecting piece, and the backrest connecting piece is connected with the backrest transmission rod through a backrest connecting rod.
Preferably, the backrest transmission rod is substantially a triangular plate, and three ends of the backrest transmission rod are respectively connected with the transmission connecting rod, the backrest transmission rod and a backrest connecting rod in a rotating manner. When the normal sitting state is switched to the lying state, the backrest transmission rod is driven by the transmission connecting rod and drives the backrest connecting rod to move, so that the backrest connecting piece rotates backwards relative to the backrest rotating rod, and the back of a user can lie on the backrest reliably after toppling.
Preferably, the transmission link is located above the backrest rotating lever, and the rotation point of the transmission link is also located above the rotation point of the backrest rotating lever. The transmission connecting rod and the backrest rotating rod are distributed up and down and do not interfere with each other when rotating around respective rotating points.
Preferably, the base is provided with a side plate, the lower end part of the side plate protrudes downwards from the base, and the front end part of the backrest rotating rod is rotatably connected with the lower end part of the side plate. With this solution the pivot connection point of the backrest pivot lever is lowered.
Preferably, the backrest rotating levers of the two mechanical extension units are connected by two connecting pipes arranged in the left-right direction, and form a rectangular frame structure. After the two backrest rotating rods and the two connecting pipes form the square frame, the whole structure is more stable.
Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:
the backrest rotating rod in the scheme is a brand-new structure in a mechanical stretching device, does not exist in other products, and never exists in the concept that the sofa backrest independently moves forwards and upwards.
Drawings
Fig. 1 is a schematic perspective view of the mechanical stretching device in an auxiliary standing-up state according to an embodiment of the present invention;
fig. 2 is a first side view of the mechanical stretching device in the auxiliary rising state according to the embodiment of the present invention;
fig. 3 is a second side view of the mechanical stretching device in the auxiliary standing state according to the embodiment of the present invention;
fig. 4 is a schematic perspective view of the mechanical stretching device in the normal sitting state according to the embodiment of the present invention;
fig. 5 is a first side view of the mechanical stretching device in the normal sitting state according to the embodiment of the present invention;
fig. 6 is a second side view of the mechanical stretching device in the normal sitting state according to the embodiment of the present invention;
fig. 7 is a schematic perspective view of the mechanical stretching device in the lying state according to the embodiment of the present invention;
fig. 8 is a first side view of the mechanical stretching apparatus in the lying state according to the present invention;
fig. 9 is a second side view of the mechanical stretching apparatus in the lying state according to the embodiment of the present invention;
fig. 10 is a schematic view of a seat lifting four-bar linkage of an embodiment of the present invention, wherein the mechanical stretching device is switched from a normal sitting state to an assisted rising state;
fig. 11 is a schematic view of a back lifting four-bar linkage for switching the mechanical stretching apparatus from a normal sitting state to an assisted rising state according to an embodiment of the present invention;
fig. 12 is a first schematic view of a four-bar linkage for switching the mechanical stretching device from a normal sitting state to a lying state according to an embodiment of the present invention;
fig. 13 is a second schematic view of the four-bar linkage of the mechanical stretching device of the present invention, which is switched from the normal sitting state to the lying state.
The figures are numbered: a base 1; a mechanical stretching unit 2; an actuator 3; a transmission connecting rod 4; a backrest attachment 5; a seat attachment 6; a backrest turning rod 7; a seat transmission rod 8; a backrest transmission rod 9; a front fixing tube 10; a rear fixing tube 11; a fixed plate 12; a footrest connector 13; a footrest link assembly 14; a seat rail 15; a first seat link 16; second seat link 17; a back link 18; a butt strap 19; a side plate 20; a short link portion 21; a long link portion 22; a drive tube 23; a connecting pipe 24; a stopper post 25; a stopper plate 26; the limiting wheel 27.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The specific implementation manner of the utility model is as follows:
as shown in fig. 1, the present invention provides a movement mechanism for lifting a backrest, which is a part of a mechanical stretching device, and specifically comprises the following components:
the mechanical stretching device comprises a base 1, mechanical stretching units 2 arranged on two sides of the base 1 in a mirror image mode and an actuator 3 for driving the mechanical stretching units 2 to act, wherein each mechanical stretching unit 2 comprises a transmission connecting rod 4, a backrest connecting part 5, a seat part connecting part 6 and a backrest rotating rod 7, the backrest connecting part 5 is arranged on the backrest rotating rod 7, one end of the actuator 3 is rotatably connected with the base 1, the other end of the actuator 3 acts on the transmission connecting rod 4 of the mechanical stretching unit 2, the transmission connecting rod 4, the seat part connecting part 6 and the backrest rotating rod 7 are rotatably arranged relative to the base 1, the transmission connecting rod 4 is connected with the seat part connecting part 6 through a seat part transmission rod 8, and the transmission connecting rod 4 is connected with the backrest rotating rod 7 through a backrest transmission rod 9; the mechanical stretching device has a normal sitting state and an auxiliary standing-up state, when the normal sitting state is switched to the auxiliary standing-up state, the actuator 3 drives the transmission connecting rod 4 to rotate upwards relative to the base 1, the transmission connecting rod 4, the base 1, the seat connecting piece 6 and the seat transmission rod 8 form a seat lifting four-bar mechanism, the transmission connecting rod 4, the base 1, the backrest rotating rod 7 and the backrest transmission rod 9 form a backrest lifting four-bar mechanism, the transmission connecting rod 4 drives the backrest rotating rod 7 through the seat lifting four-bar mechanism, the seat connecting piece 6 rotates together relative to the base 1, the rear ends of the backrest rotating rod 7 and the seat connecting piece 6 are lifted upwards and lifted to be empty, and the backrest connecting piece 5 is lifted together with the backrest rotating rod 7.
Structurally, the mechanical stretching device enables the transmission connecting rod 4 to simultaneously drive the backrest and the seat to lift through the seat lifting four-bar linkage mechanism consisting of the transmission connecting rod 4, the base 1, the seat connecting piece 6 and the seat transmission rod 8 and the backrest lifting four-bar linkage mechanism consisting of the transmission connecting rod 4, the base 1, the backrest rotating rod 7 and the backrest transmission rod 9 so as to realize the function of assisting in rising.
From the function and effect of the mechanical stretching device, the energy consumed by the integral lifting of the mechanical stretching device is large and the actuator 3 with higher requirements is required to drive, and the backrest rotating rod 7 enables the backrest connecting piece 5 to be lifted as well as the seat connecting piece 6, so that the backrest connecting piece 5 and the seat connecting piece 6 in the mechanical stretching device are partially lifted, the energy is saved, the requirement on the actuator 3 is lower, and meanwhile, the mechanical stretching device is simple in structure, small in size, more convenient to carry and move and lower in cost; moreover, compared with an integrally lifted mechanical stretching device, the simple lifting seat and the backrest have pertinence, a user is not simply lifted, but the experience is better based on the assistance that the user lifts up forwards and upwards to get up and is separated from the seat; compared with a mechanical stretching device which only can lift the seat, the backrest can not only push the left and right, but also prevent the upper half body from falling backwards to cause danger, so that the effect of assisting in rising is better and safer.
Specifically, as shown in fig. 1, 4 and 7, the base 1 is substantially a rectangular frame, and includes a front fixing tube 10, a rear fixing tube 11, and two fixing plates 12 located at left and right sides, a rear end of the actuator 3 is rotatably connected to the rear fixing tube 11, the mechanical extension units 2 at two sides are respectively connected to the fixing plates 12 at two sides, the mechanical extension units 2 further include a footrest connector 13, a footrest link assembly 14, a seat cross bar 15, a first seat link 16, a second seat link 17, and a backrest link 18, the footrest connector 13 is configured to connect to a footrest of the sofa and to be folded and extended by the footrest link assembly 14; the backrest connecting piece 5 is arranged on the backrest rotating rod 7 in a single-point rotating mode, one end of the backrest connecting rod 18 is connected to the backrest driving rod 9 in a rotating mode, the other end of the backrest connecting rod is connected with the front end portion of the backrest connecting piece 5 in a rotating mode, and the backrest connecting piece 5 can be driven to rotate relative to the backrest rotating rod 7; the seat part cross rod 15 is connected to the fixing plate 12 of the base 1 through a first seat part connecting rod 16 and a second seat part connecting rod 17, the lower end parts of the first seat part connecting rod 16 and the second seat part connecting rod 17 are rotatably connected with the fixing plate 12, the upper end parts of the first seat part connecting rod 16 and the second seat part connecting rod 17 are rotatably connected with the seat part cross rod 15, the second seat part connecting rod 17 is positioned behind the first seat part connecting rod 16, the upper end part of the second seat part connecting rod 17 is rotatably connected with the rear end part of the seat part cross rod 15, and the upper end part of the first seat part connecting rod 16 is rotatably connected with the middle part of the seat part cross rod 15; in a normal sitting state, the seat part connecting piece 6 is leaned on the seat part cross rod 15, and in an auxiliary rising state, the rear end part of the seat part connecting piece 6 is separated from the seat part cross rod 15 and is lifted upwards; the rear part of the seat part connecting piece 6 extends outwards to form an access board 19, the access board 19 is formed by bending, and the access board 19 can be leaned on the seat part cross rod 15; in addition, a side plate 20 is fixedly arranged at the front end of each of the two fixing plates 12, the upper and lower ends of the side plate 20 protrude out of the fixing plates 12, and the two ends of the front fixing tube 10 are fixedly connected with the middle parts of the two side plates 20.
As shown in fig. 7-9, the footrest link assembly 13 is connected to the footrest link assembly 14, and the footrest link assembly 14 is pivotally connected to the upper end of the side plate 20 and the front portion of the seat cross bar 15, and both the footrest link assembly 13 and the footrest link assembly 14 are folded in the normal sitting and assisted-rising states, and since the seat cross bar 15 and the side plate 20 are kept stationary during this process (the seat cross bar 15 is kept stationary during this process as will be explained later), the footrest link assembly 13 and the footrest link assembly 14 do not move a little, and the structure is more mature and the mechanism movement is simpler than in the previous mechanical stretching device; the mechanical stretching device also comprises a lying state, when the normal sitting state is switched to the lying state, the actuator 3 drives the transmission connecting rod 4 and drives the seat cross rod 15 to move backwards and upwards, the first seat connecting rod 16 and the second seat connecting rod 17 both rotate backwards, meanwhile, the footrest connecting rod assembly 14 stretches, the transmission connecting rod 4 also drives the backrest transmission rod 9 to rotate backwards, and the backrest connecting rod 18 moves along with the transmission connecting rod and drives the backrest connecting rod 5 to rotate backwards relative to the backrest rotating rod 7; the footrest connector 13 and the footrest link assembly 14 are associated with a lying position in which they are extended for the user to rest their feet, but the specific movement and connection of the two is similar to that of the previous patent of the applicant and is not the focus of the present invention.
Further, as shown in fig. 2-5, the seat cross bar 15 is substantially L-shaped, and includes a substantially vertical short link portion 21 and a substantially horizontal long link portion 22, the front end of the seat link 6 is rotatably connected to the upper end of the short link portion 21, and the front end of the transmission link 4 is rotatably connected to the lower end of the short link portion 21; the seat part cross rod 15 has a larger function in the utility model, and does not provide the support for the seat part connecting piece 6, the transmission connecting rod 4 can also directly pull the seat part connecting piece to move, other connecting rod transmission is not needed, and the transmission connecting rod 4 can also rotate relative to the seat part cross rod 15, so that the whole movement is simpler; the preceding tip of back dwang 7 rotates to be connected the lower tip of curb plate 20, seat connecting piece 6 is in transmission connecting rod 4 top, and back dwang 7 is in transmission connecting rod 4 below, and three's pivot point also distributes from top to bottom in proper order, consequently normally just sits the in-process that the state switches to supplementary state of standing up, and transmission connecting rod 4, seat connecting piece 6 and back dwang 7 all can upwards rotate forward, and the three position staggers each other, mutually noninterfere.
The backrest transmission rod 9 is a substantially triangular plate-shaped body, three ends of the backrest transmission rod 9 are respectively and rotatably connected with the transmission link 4, the backrest transmission rod 7 and the backrest link 18, the upper end of the backrest transmission rod 9 is rotatably connected with the rear end of the transmission link 4, the front end of the backrest transmission rod 9 is rotatably connected with the front end of the backrest link 18, and the rear end of the backrest transmission rod 9 is rotatably connected with the backrest transmission rod 7; the seat transmission rod 8 is a straight rod, two ends of the straight rod are respectively connected with the seat connecting piece 6 and the transmission connecting rod 4 in a rotating mode, and when the transmission connecting rod 4 rotates upwards relative to the base 1, the seat transmission rod 8 moves upwards and drives the seat connecting piece 6 to rotate upwards relative to the base 1; in the process of switching from the normal sitting state to the assisted rising state, the backrest transmission rod 9 is driven by the transmission link 4 and drives the backrest transmission rod 7 to rotate, and when the normal sitting state is switched to the lying state, the backrest transmission rod 9 is driven by the transmission link 4 and drives the backrest link 18 to move, so that the backrest connection member 5 rotates backward relative to the backrest transmission rod 7, and the back of the user can lie on the backrest reliably after toppling.
The front end of the actuator 3 is rotatably connected with a driving pipe 23, and the driving pipe 23 is fixedly connected with the transmission connecting rods 4 of the two mechanical stretching units 2.
The backrest rotating rods 7 on both sides are connected through two connecting pipes 24 and jointly form a frame structure, and in a normal sitting and lying state, the backrest rotating rods 7 and the connecting pipes 24 are leaned on the rear fixing pipe 11.
Still further, as shown in fig. 3 and 9, the mechanical stretching device has a normal sitting state, an auxiliary rising state and a lying state, so that a definite movement is required to realize the state switching: a limiting post 25 arranged along the left-right direction is fixedly arranged at the upper end part of the side plate 20 close to the first seat connecting rod 16, the limiting post 25 is positioned in front of the first seat connecting rod 16 and configured to abut against the first seat connecting rod 16 to prevent the first seat connecting rod 16 from continuously rotating forwards and downwards, namely when the normal sitting state is switched to the auxiliary standing state, the limiting post 25 limits the first seat connecting rod 16 to continuously rotate forwards and downwards, so that the seat cross rod 15 is kept still in the process, and the transmission connecting rod 4 drives the seat connecting piece 6 and the backrest rotating rod 7 to rotate; a limiting plate 26 is arranged on the backrest rotating piece, the limiting plate 26 is bent and extends outwards, and a limiting wheel 27 protruding out of the second seat connecting rod 17 is arranged on the second seat connecting rod 17; in a normal sitting state, the backrest rotating part is abutted against the base 1, and the limit plate 26 is positioned behind the limit wheel 27; in the lying state, the second seat link 17 rotates backward and makes the limit wheel 27 abut on the limit plate 26, and when the lying state is switched to the normal sitting state, the limit wheel 27 prevents the limit plate 26 and the backrest rotating rod 7 from being lifted; in the mechanical stretching device, the limiting function is generally used to regulate the motion of the link, so that the link can move along with the designed motion track to realize the function of the mechanical stretching device, and the limiting wheel 27 and the limiting plate 26 also have the functions of limiting the motion from the normal sitting state to the lying state after the two are contacted, and preventing the backrest rotating rod 7 from being lifted (only one section of the motion is stopped) when the lying state is switched to the normal sitting state, so that the whole motion can be performed according to the designed track.
As shown in fig. 4-6, in the normal sitting state, the ottoman link 13 and the ottoman link assembly 14 are folded in the front portion of the mechanical extension unit 2, the first seat link 16 and the second seat link 17 are both tilted forward, the first seat link 16 rests on the stopper post 25, the seat crossbar 15 is kept substantially horizontal, the seat link 6 rests on the seat crossbar 15 and is kept substantially horizontal with the seat crossbar 15, the transmission link 4 is also kept substantially horizontal, the backrest rotation lever 7 is kept substantially horizontal, the front end of the backrest link 18 is tilted downward, and the backrest link 5 is tilted slightly backward.
As shown in fig. 7 to 9, in the lying state, the ottoman link 13 and the ottoman link assembly 14 are both extended forward, the first seat link 16 and the second seat link 17 are substantially vertical, the limit wheel 27 of the second seat link 17 abuts against the limit plate 26 of the backrest rotating rod 7, the seat link 6 still abuts against the seat cross rod 15 and is higher and positioned backward than in the normal sitting state, the state is similar because the transmission link 4 is connected to the seat cross rod 15, and the backrest rotating rod 9 rotates upward and backward, the backrest link 18 is lifted, the backrest link 5 is further tilted backward than in the normal sitting state, and the backrest rotating rod 7 is still kept substantially horizontal.
As shown in fig. 1 to 3, in the assisted rising state, the ottoman link 13 and the ottoman link assembly 14 are folded in the front portion of the mechanical extension unit 2, the first seat link 16 and the second seat link 17 are both tilted forward, the first seat link 16 rests on the stopper post 25, the seat crossbar 15 is kept substantially horizontal, the seat link 6, the transmission link 4, and the backrest rotation rod 7 are all tilted rearward, and the backrest link 5 is closer to the backrest rotation rod 7 than in the normal sitting state.
As shown in fig. 12 and 13, when the normal sitting state is switched to the lying state, the actuator 3 is shortened and drives the transmission link 4 to move backward, the transmission link 4 drives the seat cross bar 15, the seat transmission rod 8 and the backrest transmission rod 9 to move and keep approximately horizontal under the action of the seat cross bar 15 and the backrest transmission rod 9, the seat cross bar 15 drives the first seat link 16 and the second seat link 17 to rotate upward and backward, and the seat cross bar 15, the seat link 6 and the transmission link 4 are all lifted and moved backward; the backrest transmission rod 9 rotates backwards relative to the backrest rotation rod 7, the front end part of the backrest transmission rod rotates upwards to drive the backrest connecting rod 18 to move, and the backrest connecting rod 18 moves backwards; the seat cross rod 15 moves and simultaneously drives the footrest connecting rod assembly 14 to extend; until the limiting wheel 27 is abutted against the limiting plate 26; the actuator 3 can be switched back from the lying state to the normal sitting state by re-extending.
As shown in fig. 10 and 11, when the normal sitting state is switched to the auxiliary standing state, the actuator 3 extends and drives the rotating link to move forward, and the first seat link 16 cannot move forward because the limiting post 25 abuts against the first seat link 16, so the seat cross bar 15 can only be kept still, and the transmission link 4 can only rotate relative to the seat cross bar 15, that is, the rear end of the transmission link 4 rotates forward and upward; the transmission connecting rod 4 drives the seat part transmission rod 8 and the backrest transmission rod 9 to move, the seat part transmission rod 8 drives the seat part connecting piece 6 to rotate relative to the seat part cross rod 15, and the rear end part of the seat part connecting piece rotates forwards and upwards; the backrest transmission rod 9 pulls the backrest transmission rod 7 to rotate relative to the fixed plate 12, and the rear end part of the backrest transmission rod rotates forwards and upwards until the actuator 3 cannot extend any further; the actuator 3 is again shortened to switch from the assisted-rise state back to the normal-sitting state.
Claims (7)
1. A motion mechanism for lifting a backrest, comprising: comprises a base, an actuator and mechanical extension units arranged on two sides of the base in a mirror image manner; the mechanical extension unit comprises a backrest rotating rod, the actuator is connected to the base and acts on the backrest rotating rod, and the backrest rotating rod is rotatably connected to the base and rotates relative to the base under the driving of the actuator; the movement mechanism comprises a normal sitting state and an auxiliary rising state, and in the normal sitting state, the backrest rotating rod is approximately horizontal and is leaned on the base; in the assisted rising state, the backrest rotating rod is driven by the actuator and the rear end is raised to be empty, and is configured to cause the sofa backrest to push the back of the human body forward and upward along with the rotation of the backrest rotating rod.
2. The exercise mechanism for raising a back of claim 1, wherein: the backrest device comprises a base, a backrest rotating rod, a transmission connecting rod, a backrest driving rod, a transmission connecting rod, a backrest rotating rod, a transmission connecting rod, a backrest driving rod and a backrest driving rod.
3. The exercise mechanism for raising a back of claim 2, wherein: the backrest rotating rod is rotatably connected with a backrest connecting piece, and the backrest connecting piece is connected with a backrest transmission rod through a backrest connecting rod.
4. A mechanism for moving a lift back according to claim 3 wherein: the backrest transmission rod is a triangular plate-shaped body, and three end parts of the backrest transmission rod are respectively and rotatably connected with the transmission connecting rod, the backrest transmission rod and the backrest connecting rod.
5. A kinematic mechanism for lifting a backrest according to claim 2, characterized in that: the transmission connecting rod is positioned above the backrest rotating rod, and the rotating point of the transmission connecting rod is also positioned above the rotating point of the backrest rotating rod.
6. The exercise mechanism for raising a back of claim 1, wherein: the base is provided with a side plate, the lower end part of the side plate protrudes downwards out of the base, and the front end part of the backrest rotating rod is rotatably connected with the lower end part of the side plate.
7. A kinematic mechanism for lifting a backrest according to claim 1, characterized in that: the backrest rotating rods in the two mechanical extension units are connected through two connecting pipes arranged along the left-right direction, and a square frame structure is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222601180.1U CN218773629U (en) | 2022-09-26 | 2022-09-26 | Movement mechanism for lifting backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222601180.1U CN218773629U (en) | 2022-09-26 | 2022-09-26 | Movement mechanism for lifting backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218773629U true CN218773629U (en) | 2023-03-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222601180.1U Active CN218773629U (en) | 2022-09-26 | 2022-09-26 | Movement mechanism for lifting backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218773629U (en) |
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2022
- 2022-09-26 CN CN202222601180.1U patent/CN218773629U/en active Active
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Assignee: ANJI YONGYI SHANGPIN FURNITURE CO.,LTD. Assignor: UE FURNITURE Co.,Ltd. Contract record no.: X2023980041550 Denomination of utility model: A motion mechanism for raising the backrest Granted publication date: 20230331 License type: Common License Record date: 20230912 |