CN216494393U - Single-motor extension mechanism for old people chair - Google Patents
Single-motor extension mechanism for old people chair Download PDFInfo
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- CN216494393U CN216494393U CN202123202916.XU CN202123202916U CN216494393U CN 216494393 U CN216494393 U CN 216494393U CN 202123202916 U CN202123202916 U CN 202123202916U CN 216494393 U CN216494393 U CN 216494393U
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Abstract
The utility model relates to a single-motor extension mechanism for an old people chair, which comprises a base component, an inclined bracket, an extension component, an insert mounting component, a first support component, a second support component, a driving front fixing rod, a conversion component, a reset component, a seat frame mounting plate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, an insert support component and a motor. The utility model adopts a motor to simultaneously control the extension of the extension component, the inclination of the inserting piece mounting piece and the lifting of the seat frame mounting plate, can ensure that the backrest is not linked with the foot plate through the action of the conversion piece and the reset piece, and can ensure that the backrest and the handrail are kept still when the foot plate is extended, thereby better meeting the use requirements of old people.
Description
Technical Field
The utility model relates to a single-motor extension mechanism for an old people chair.
Background
Single motor old man chair extension mechanism on the existing market generally adopts back and sole to carry out the interlock when extending and realizes, and the back also can follow the slope when the sole extends promptly, causes old man's clothes to be upwards pulled up like this to lead to the people to adjust down the position voluntarily, in order to prevent that the clothes from pulling up. When the single motor is linked, the foot plate is extended to the right position, the backrest is also inclined to the right position, and thus, one posture is omitted, namely the foot plate is in the right position, and the backrest is not moved (namely a TV posture). The old people chair with a single motor structure can achieve the purposes that the foot plate is in place, the backrest is not moved (the posture of a TV), but the backrest can move backwards along with the seat during the operation of the old people chair, and the old people chair needs to have enough space from the wall surface of the sofa, so that the defects in the prior art are overcome, and the purposes that the backrest is not linked with the foot plate, and the foot plate extends, the backrest is not moved, and the armrest is not moved are achieved.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides a single-motor extension mechanism of an old people chair, which is used for ensuring that a backrest and a foot plate are not linked and the backrest and armrests are not moved when the foot plate is extended in the use process.
The technical scheme adopted by the utility model for solving the technical problem is as follows: the utility model provides a single motor old man chair extends mechanism, has base subassembly, slope support, extends subassembly, inserted sheet installed part, first support piece, second support piece, dead lever before the drive, converting part, the piece that resets, seat frame mounting panel, head rod, second connecting rod, third connecting rod, fourth connecting rod, fifth connecting rod, sixth connecting rod, inserted sheet support piece and motor.
The connection relationship of the components is as follows: the inclined bracket is hinged on the base component, the rear end of the stretching component is hinged with the front end of the seat frame mounting plate, the rear end of the motor is hinged with the rear end of the base component, the front end of the motor is hinged with the driving front fixing rod, and the lower part of the driving front fixing rod is hinged with the inclined bracket; the lower end of the first support piece is hinged with the inclined bracket at a fourth hinge point, the upper end of the first support piece is hinged with the bottom of the sixth connecting rod at a first hinge point, the middle part of the second support piece is hinged with the rear end of the inclined bracket at a fifth hinge point, the front lower part of the second support piece is hinged with the seat frame mounting plate, the front upper part of the second support piece is hinged with the rear end of the fifth connecting rod at a third hinge point, the front end of the fifth connecting rod is hinged with the middle part of the sixth connecting rod at a second hinge point, and the upper part of the sixth connecting rod is hinged with the seat frame mounting plate; one end of the reset piece is hinged on the inclined bracket, the other end of the reset piece is hinged with the middle part of the fourth connecting rod, the front end of the fourth connecting rod is hinged with the seat frame mounting plate, the tail part of the fourth connecting rod is hinged with one end of the third connecting rod, and the other end of the third connecting rod is hinged with the extension component; two ends of the conversion piece are respectively hinged with the first connecting rod and the second connecting rod, and the front end of the second connecting rod is hinged with the extension assembly.
In order to ensure smooth movement of the seat, the second hinge point is respectively arranged above a connecting line between the first hinge point and the third hinge point and between the first hinge point and the fifth hinge point, and the third hinge point is arranged below a connecting line between the fourth hinge point and the fifth hinge point.
In order to keep the movement stability in the process of opening or resetting the backrest, a reset spring is connected between the middle of the rear end of the second supporting piece and the middle of the seat frame mounting plate, and a limiting column used for limiting the rotating position of the second supporting piece is arranged at the lower end of the seat frame mounting plate.
In order to ensure that the seat frame mounting plate retracts and then retracts the extension assembly, the reset piece is provided with a kidney-shaped hole, the upper end of the reset piece is provided with a hook, the seat frame mounting plate is provided with a reset pin, and the reset pin is clamped in the hook of the reset piece after the extension assembly is completely extended; the upper end hole of the reset piece is concentric with the upper end hole of the fourth connecting rod, so that the reset piece rotates along with the fourth connecting rod when the fourth connecting rod rotates.
The utility model has the beneficial effects that: the utility model adopts a motor to simultaneously control the foot plate to extend, the backrest to incline and the seat to lift, can ensure that the backrest and the foot plate are not linked through the action of the conversion part and the reset part, and can ensure that the backrest and the armrests keep still when the foot plate extends, thereby better meeting the use requirements of old people.
Drawings
The utility model is further described with reference to the following figures and embodiments.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the hinge point in the present invention.
Fig. 3 is a state diagram of the reset member of the present invention disengaged from the reset pin.
Fig. 4 is a state diagram of the reset member of the present invention locked with the reset pin.
In the figure: 1. the automatic lifting device comprises a base assembly, a 2-inclined bracket, a 3-extending assembly, a 4-first supporting piece, a 5-second supporting piece, a 6-driving front fixing rod, a 7-conversion piece, a 8-reset piece, a 9-seat frame mounting plate, a 10-first connecting rod, a 11-second connecting rod, a 12-third connecting rod, a 13-fourth connecting rod, a 14-fifth connecting rod, a 15-sixth connecting rod, a 16-insert supporting piece, a 17-insert mounting piece, a 18-motor, a 19-reset spring, a 20-limiting column and a 21-reset pin, wherein the base assembly is fixedly connected with the base assembly;
A. first pin joint, B.second pin joint, C.third pin joint point, D.fourth pin joint, E.fifth pin joint.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1 and 2, the extension mechanism for the single-motor geriatric chair comprises a base assembly 1, an inclined bracket 2, an extension assembly 3, a first support 4, a second support 5, a driving front fixing rod 6, a conversion part 7, a reset part 8, a seat frame mounting plate 9, a first connecting rod 10, a second connecting rod 11, a third connecting rod 12, a fourth connecting rod 13, a fifth connecting rod 14, a sixth connecting rod 15, a plug sheet support 16, a plug sheet mounting part 17, a motor 18, a reset spring 19, a limit column 20 and a reset pin 21.
The rear end of the stretching component 3 is hinged with the front end of the seat frame mounting plate 9, the rear end of the motor 18 is hinged with the rear end of the base component 1, the front end of the motor 18 is hinged with the driving front fixing rod 6, and the lower part of the driving front fixing rod 6 is hinged with the inclined bracket 2; the rear end of the seat frame mounting plate 9 is hinged with the upper end of the inserting piece mounting piece 17, the upper end of the inserting piece supporting piece 16 is hinged with the inserting piece mounting piece 17, and the lower end of the inserting piece supporting piece is hinged with the second connecting rod 11.
The inclined bracket 2 is hinged on the base assembly 1, the lower end of the first support piece 4 is hinged with the inclined bracket 2 at a fourth hinge point D, the upper end of the first support piece is hinged with the bottom of the sixth connecting rod 15 at the first hinge point A, the middle part of the second support piece 5 is hinged with the rear end of the inclined bracket 2 at a fifth hinge point E, the front lower part of the second support piece is hinged with the seat frame mounting plate 9, the front upper part of the second support piece is hinged with the rear end of the fifth connecting rod 14 at a third hinge point C, the front end of the fifth connecting rod 14 is hinged with the middle part of the sixth connecting rod 15 at a second hinge point B, and the upper part of the sixth connecting rod 15 is hinged with the seat frame mounting plate 9, so that a combined four-bar mechanism consisting of the seat frame mounting plate 9, the sixth connecting rod 15, the first support piece 4, the inclined bracket 2, the fifth connecting rod 14 and the second support piece 5 is formed.
Preferably, the second hinge point B is above a line connecting the first hinge point a and the third hinge point C, and the first hinge point a and the fifth hinge point E, respectively, and the third hinge point C is below a line connecting the fourth hinge point D and the fifth hinge point E.
One end of the reset piece 8 is hinged on the inclined bracket 2, the other end of the reset piece is hinged with the middle part of a fourth connecting rod 13, the front end of the fourth connecting rod 13 is hinged with the seat frame mounting plate 9, the tail part of the fourth connecting rod is hinged with one end of a third connecting rod 12, and the other end of the third connecting rod 12 is hinged with the extension component 3; two ends of the conversion piece 7 are respectively hinged with the first connecting rod 10 and the second connecting rod 11, and the front end of the second connecting rod 11 is hinged with the extension component 3.
A return spring 19 is connected between the middle of the rear end of the second support member 5 and the middle of the seat frame mounting plate 9, and a limiting column 20 for limiting the rotation position of the second support member 5 is arranged at the lower end of the seat frame mounting plate 9.
The reset piece 8 is provided with a kidney-shaped hole, the upper end of the reset piece 8 is provided with a hook, the seat frame mounting plate 9 is provided with a reset pin 21, and the reset pin 21 is clamped in the hook of the reset piece 8 after the stretching assembly 3 is completely stretched; the upper end hole of the reset piece 8 is concentric with the upper end hole of the fourth connecting rod 13, so that the reset piece 8 rotates along with the fourth connecting rod 13 when the fourth connecting rod 13 rotates.
The using process is briefly described as follows: the motor 18 drives the front fixing rod 6 to rotate anticlockwise when contracting, the first connecting rod 10 drives the conversion part 7 to rotate clockwise, the conversion part 7 rotates clockwise to drive the second connecting rod 11 to move forwards to drive the extension component 3 to extend, the extension force of the extension component 3 is smaller than the pulling force of the reset spring 19, and the seat frame mounting plate 9 does not change in displacement at the moment.
When the extension assembly 3 is completely unfolded, the motor 18 continuously moves backwards, the extension force provided by the motor is larger than the pulling force of the return spring 19, the seat frame mounting plate 9 is pushed to move forwards, when the seat frame mounting plate 9 moves forwards, the sixth connecting rod 15 drives the first supporting piece 4 to rotate clockwise to drive the fifth connecting rod 14 to move forwards, and the fifth connecting rod 14 drives the second supporting piece 5 to rotate anticlockwise, so that the seat frame mounting plate 9 moves upwards; on the contrary, when the seat frame mounting plate 9 moves backwards, the sixth connecting rod 15 drives the first supporting piece 4 to rotate anticlockwise, the fifth connecting rod 14 drives the second supporting piece 5 to rotate clockwise, and when the front end of the second supporting piece 5 contacts the limiting column 20, the seat frame mounting plate 9 stops moving; the seat frame mounting plate 9 moves forward to enable the second supporting piece 5 to rotate anticlockwise to drive the inserting piece supporting piece 16 to move downwards, then the inserting piece mounting piece 17 is driven to rotate anticlockwise, namely the backrest is opened, otherwise, the backrest resets, and the return spring 19 plays an auxiliary role in the process.
When the stretching assembly 3 is opened, the fourth connecting rod 13 is driven to rotate by the third connecting rod 12, the reset piece 8 is driven to rotate by the fourth connecting rod 13, at the moment, the hook on the reset piece 8 does not reach the upper part of the reset pin 21 (the posture shown in fig. 3), and the reset piece 8 and the reset pin 21 are in a disengaged state; when the seat frame mounting plate 9 moves forward, the reset member 8 moves up to the position above the reset pin 21 (shown in fig. 4) in a rotating manner, and after the stretching assembly 3 is completely stretched, the reset pin 21 is caught in the hook of the reset member 8, and the reset member 8 and the reset pin 21 are in a locked state.
The function of this piece 8 that resets is when seat frame mounting panel 9 is expected to withdraw after antedisplacement, needs seat frame mounting panel 9 to withdraw earlier afterwards extension subassembly 3 and withdraws, and the crotch that resets on the piece 8 can prevent extension subassembly 3 and withdraws earlier, and when extension subassembly 3 withdraws earlier, the crotch that resets on the piece 8 can pull reset pin 21 for seat frame mounting panel 9 moves to the back below, thereby makes when extension subassembly 3 withdraws, withdraws extension subassembly 3 after seat frame mounting panel 9 resets earlier.
The utility model adopts a motor 18 to simultaneously control the extension of the foot plate, the inclination of the backrest and the lifting of the seat, and can ensure that the backrest is not linked with the foot plate and the backrest and the armrests are kept still when the foot plate is extended through the action of the conversion part 7 and the reset part 8.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The utility model provides a single motor old man chair extends mechanism, has base subassembly, slope support, extends subassembly, inserted sheet installed part, first support piece, second support piece, dead lever before the drive, converting part, the piece that resets, seat frame mounting panel, head rod, second connecting rod, third connecting rod, fourth connecting rod, fifth connecting rod, sixth connecting rod, inserted sheet support piece and motor, characterized by:
the inclined bracket is hinged on the base component, the rear end of the stretching component is hinged with the front end of the seat frame mounting plate, the rear end of the motor is hinged with the rear end of the base component, the front end of the motor is hinged with the driving front fixing rod, and the lower part of the driving front fixing rod is hinged with the inclined bracket;
the lower end of the first support piece is hinged with the inclined bracket at a fourth hinge point, the upper end of the first support piece is hinged with the bottom of the sixth connecting rod at a first hinge point, the middle part of the second support piece is hinged with the rear end of the inclined bracket at a fifth hinge point, the front lower part of the second support piece is hinged with the seat frame mounting plate, the front upper part of the second support piece is hinged with the rear end of the fifth connecting rod at a third hinge point, the front end of the fifth connecting rod is hinged with the middle part of the sixth connecting rod at a second hinge point, and the upper part of the sixth connecting rod is hinged with the seat frame mounting plate;
one end of the reset piece is hinged on the inclined bracket, the other end of the reset piece is hinged with the middle part of the fourth connecting rod, the front end of the fourth connecting rod is hinged with the seat frame mounting plate, the tail part of the fourth connecting rod is hinged with one end of the third connecting rod, and the other end of the third connecting rod is hinged with the extension component;
two ends of the conversion piece are respectively hinged with the first connecting rod and the second connecting rod, and the front end of the second connecting rod is hinged with the extension assembly.
2. The single motor geriatric chair extension mechanism of claim 1, wherein: the second hinge point is respectively arranged above a connecting line between the first hinge point and the third hinge point and between the first hinge point and the fifth hinge point, and the third hinge point is arranged below a connecting line between the fourth hinge point and the fifth hinge point.
3. The single motor geriatric chair extension mechanism of claim 1, wherein: and a return spring is connected between the middle of the rear end of the second support piece and the middle of the seat frame mounting plate, and a limiting column used for limiting the rotation position of the second support piece is arranged at the lower end of the seat frame mounting plate.
4. The single motor geriatric chair extension mechanism of claim 1, wherein: reset and seted up waist type hole on the piece, reset and have the crotch on the piece, reset and concentric with the upper end hole of fourth connecting rod in the upper end hole of the piece, the seat frame mounting panel on install the round pin that resets, reset the round pin and stretch out the back card in the crotch that resets completely at the extension subassembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123202916.XU CN216494393U (en) | 2021-12-17 | 2021-12-17 | Single-motor extension mechanism for old people chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123202916.XU CN216494393U (en) | 2021-12-17 | 2021-12-17 | Single-motor extension mechanism for old people chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216494393U true CN216494393U (en) | 2022-05-13 |
Family
ID=81499822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123202916.XU Active CN216494393U (en) | 2021-12-17 | 2021-12-17 | Single-motor extension mechanism for old people chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216494393U (en) |
-
2021
- 2021-12-17 CN CN202123202916.XU patent/CN216494393U/en active Active
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