CN211684786U - Electric folding device for chair - Google Patents

Abstract

An electric folding device for a seat comprises a seat unit, at least one first elastic member, at least one second elastic member, a driving unit, a first linkage unit and a second linkage unit. The seat unit comprises a positioning frame, a pair of second rotating shafts, a seat frame, a pair of first rotating shafts and a seat back frame, the elastic force of the first elastic piece can provide the seat back frame to be folded relative to the seat frame, the elastic force of the second elastic piece can provide the seat frame to be folded relative to the positioning frame, the first main linkage piece of the first linkage unit is driven by the driving unit to drive the seat back frame to be folded relative to the seat frame, the second main linkage piece of the second linkage unit is driven by the first linkage unit to be converted from a buckling state to a disengaging state, and the purpose of completing the folding action by one key can be achieved.

Description

Electric folding device for chair

Technical Field

The present invention relates to a seat folding device, and more particularly to an electric seat folding device for a vehicle.

Background

Generally, the car with the third row of seats is designed such that the third row of seats can be folded for facilitating the passengers riding in the third row to get on and off the car and the rear trunk can be expanded at any time according to the use requirements.

Most of the seats in the market at present have a forward-folding function, and the seats are manually operated in many types, and have less functions of automatically folding the seats.

In addition, in the existing vehicle seat (taiwan certificate No. I568611), a user can independently operate a first top sliding mechanism according to his needs to move a first seat relative to a first seat body, and then drive a second connecting rod to pivot relative to a first connecting rod and a third connecting rod, and gradually pivot a first backrest frame, or can start a first bottom sliding mechanism to move a first seat body relative to a first support frame, and start a sliding swing link mechanism to gradually pivot a first headrest frame, during which the first connecting rod, the second connecting rod, and the third connecting rod are also driven to pivot, and finally the first seat body and the first backrest frame are made to be a straight line and parallel to the bottom surface of the vehicle, so as to achieve a flat state, so as to place goods, or can be used as a bed.

The vehicle seat can only be flatly laid, even if the vehicle seat is flatly laid, the vehicle seat still occupies a considerable volume, the planning of the internal space of the carriage is not facilitated, and the flatting operation of the vehicle seat is mechanical and time-consuming in operation.

Disclosure of Invention

An object of the utility model is to provide an electronic folding device of seat that a key just can accomplish to turn over an action and operate fast.

The utility model relates to an electric folding device for a seat, which is suitable for a vehicle body, the vehicle body is provided with at least one fixed rod, the electric folding device for the seat comprises a seat unit, at least one first elastic element, at least one second elastic element, a driving unit, a first linkage unit and a second linkage unit, the seat unit comprises a pair of positioning frame which is positioned at one side of the fixed rod and connected with the vehicle body, a pair of second rotating shaft which is arranged on the positioning frame, a pair of first rotating shaft which is arranged on the second rotating shaft and can pivot relative to the positioning frame, a pair of first rotating shaft which is arranged on the seat frame, and a back frame which is connected with the first rotating shaft and can pivot relative to the seat frame, the seat frame is provided with a movable end which is arranged on the first rotating shaft, and a pin joint end which is arranged on the second rotating shaft corresponding to the movable end, the first elastic element is arranged between the chair seat frame and the chair back frame, the elasticity of the first elastic element can provide the folding of the chair back frame relative to the chair seat frame, the second elastic element is arranged between the positioning frame and the chair seat frame, the elasticity of the second elastic element can provide the folding of the chair seat frame relative to the positioning frame, the driving unit is arranged on one of the chair seat frame and the chair back frame, the first linkage unit comprises a first main linkage element connected with one of the first rotating shafts, the first main linkage element can drive the folding of the chair back frame relative to the chair seat frame by the driving of the driving unit, the second linkage unit comprises at least one second main linkage element arranged on the chair seat frame, and the second main linkage element can be converted into a separation state separated from the fixed rod by the connection state of the first linkage element embedded and buckled on the fixed rod, when the second main linkage piece is in the buckling state, the movable end of the chair seat frame is positioned relative to the fixed rod, and when the second main linkage piece is in the disengaging state, the elastic force of the second elastic piece enables the movable end of the chair seat frame to be far away from the fixed rod.

The electric folding device for the chair of the utility model comprises a motor arranged on the chair back frame and a rolling wheel driven by the motor, and a control member which can be furled or released by the winding wheel, the control member is connected with the first main linkage member, the first linkage unit also comprises a first auxiliary linkage piece connected with the other first rotating shaft and a first traction piece connected between the first main linkage piece and the first auxiliary linkage piece, the motor is started to roll up the control piece through the winding wheel to link the first main linkage piece, the first main linkage part pulls the first pulling part, the first pulling part pulls the first auxiliary linkage part, the first main linkage part and the first auxiliary linkage part synchronously rotate the first rotating shaft, so that the first rotating shaft drives the chair back frame to be folded relative to the chair seat frame.

The utility model discloses an electronic folding device of seat, the main interlock spare quantity of second interlock unit has two, second interlock unit still includes that the axle locates one of them interlock board, connection of first pivot in the second of interlock board is drawn the piece, and a pair of receiving the second draws the piece interlock and connect in the board of drawing of the main interlock spare of second, the back of the chair frame for when the seat frame is packed up, the interlock board receives back of the chair frame drive produces the rotating, can stimulate second drawing piece and interlock the board of drawing reaches the main interlock spare of second, the main interlock spare of second can by the lock state converts the off-state.

The utility model discloses an electronic folding device of seat, the first main interlock spare of first linkage unit has one of them relatively first pivot pivoted first end and second end, first pair interlock spare has another relatively first pivot pivoted end of pulling, the control connect in first end, the both ends of first pulling connect respectively in the second end with the end of pulling.

The utility model discloses an electronic folding device of seat, drive unit's control has and is located the first pipe of back of the chair frame, and wear to locate the inside first cable of first pipe, first cable can by the winding up of reel or release, first cable connect in first end, the first drive of first linkage unit has and is located the second pipe of back of the chair frame, and wear to locate the inside second cable of second pipe, the both ends of second cable connect respectively in the second end of first main interlock with the end of being pulled of first pair interlock.

The utility model discloses an electronic folding device of seat, second linkage unit still include a pair of connect in the arm-tie of dragging board, and a pair of connect respectively in the arm-tie with reply spring between the main linkage of second, the linkage has respectively and can receive first convex part that the back of the chair frame was stirred, with the second convex part that first convex part interval set up, the second traction has and is located the third pipe of chair seat frame, a pair of positioning in chair seat frame and communicate in the fourth pipe of third pipe, wear to locate the inside third cable of third pipe, and a pair of with the third cable is connected and is worn to locate respectively the inside fourth cable of fourth pipe, the end of fourth cable connect respectively in dragging board.

The utility model discloses an electronic folding device of seat, first elastic component adopts the scroll spring, and the cover is located one of them first pivot outside to have for the expansion end produces the first location end of location, and is located the first release end of back of the chair frame.

The utility model discloses an electronic folding device of seat, the second elastic component adopts torsion spring, and the cover is located the second pivot is outside to have respectively for the locating rack produces the second location end of location, and a locating position the second release end of seat frame.

The beneficial effects of the utility model reside in that: by using the integral assembly, when the driving unit is started, the first main linkage piece can drive the chair back frame to fold relative to the chair seat frame, and then the second main linkage piece of the second linkage unit can be linked to be converted from the buckling state to the disengaging state, so that the movable end of the chair seat frame is operated from the state of being positioned relative to the fixed rod to the overturning state far away from the fixed rod, and the electric seat is operated by using the keys of the central control panel and an electric system, so that the one-key overturning function can be completed when a user drives the seat, and the folding speed is high and the operation is easy.

Drawings

Fig. 1 is a perspective view of an embodiment of the electric folding device for a seat of the present invention;

fig. 2 is a partial perspective view of the embodiment, illustrating a first main linking member of a first linking unit;

fig. 3 is another partial perspective view of the embodiment, illustrating a first secondary linkage of the first linkage unit;

FIG. 4 is a plan assembly view of the embodiment, illustrating a first resilient member mounted to a seating unit;

fig. 5 is another schematic plan assembly view of the embodiment, illustrating a second main interlocking member and a detent plate of a second interlocking unit;

FIG. 6 is an operational diagram of the embodiment, illustrating that the first main linking part of the first linking unit is driven by a control part to rotate;

FIG. 7 is another operation diagram of the embodiment, illustrating that the first sub-linkage of the first linkage unit is driven by a first driving member to rotate;

FIG. 8 is another schematic operation diagram of the embodiment, illustrating a backrest frame folded relative to a seat frame and linking a linking plate and a second linking member;

fig. 9 is another operation diagram of the embodiment, illustrating the second main linking member and the braking plate of the second linking unit; and

fig. 10 is a schematic view of the folding completion of the embodiment.

Detailed Description

Referring to fig. 1 to 4, an embodiment of the electric folding device for a seat of the present invention is applicable to a vehicle body 1, the vehicle body 1 has two fixing rods 101, and the electric folding device for a seat of the present invention includes a seat unit 10, a first elastic member 20, two second elastic members 30, a driving unit 40, a first linking unit 50 and a second linking unit 60.

The seat unit 10 includes a pair of positioning frames 11 disposed on one side of the fixing rod 101 and connected to the vehicle body 1, a pair of second rotating shafts 12 pivotally disposed on the positioning frames 11, a seat frame 13 pivotally disposed on the second rotating shafts 12 and capable of pivoting with respect to the positioning frames 11, a pair of first rotating shafts 14 pivotally disposed on the seat frame 13, and a seat back frame 15 connected to the first rotating shafts 14 and capable of pivoting with respect to the seat frame 13. The seat frame 13 has a movable end 131 pivotally disposed on the first shaft 14, a pivoting end 132 corresponding to the movable end 131 and pivotally disposed on the second shaft 12, and a limiting plate 133 disposed on the movable end 131, wherein the limiting plate 133 has a rear blocking portion 134 and a front blocking portion 135. The backrest frame 15 has a pair of levers 151 approaching to the first rotation axis 14, and the levers 151 can rotate between the rear stop 134 and the front stop 135.

The first elastic element 20 is installed between the seat frame 13 and the back frame 15, and its elastic force can provide the folding of the back frame 15 relative to the seat frame 13, and the first elastic element 20 of the embodiment adopts a spiral spring, and is sleeved outside one of the first rotating shafts 14, and has a first positioning end 21 for positioning relative to the movable end 131, and a first releasing end 22 for positioning the shift lever 151 of the back frame 15.

The second elastic element 30 is installed between the positioning frame 11 and the seat frame 13, and its elastic force can provide the seat frame 13 to fold relative to the positioning frame 11. The second elastic members 30 are torsion springs, are respectively sleeved outside the second rotating shaft 12, and each have a second positioning end 31 clamped to the positioning frame 11 and a second releasing end 32 positioned on the seat frame 13.

The driving unit 40 is mounted to the seatback frame 15. The drive unit 40 includes a motor 41, a reel 42 driven by the motor, and a control member 43. The control member 43 has a first guiding tube 431 positioned in the backrest frame 15, and a first cable 432 passing through the first guiding tube 431, wherein the first cable 432 can be wound or released by the winding wheel 42.

Referring to fig. 2 and fig. 3, the first linkage unit 50 includes a first main linkage 51 connected to one of the first rotating shafts 14, a first auxiliary linkage 52 connected to the other first rotating shaft 14, and a first pulling member 53 connected between the first main linkage 51 and the first auxiliary linkage 52. The first main linking member 51 has a first end 511 and a second end 512 opposite to one of the first rotating shafts 14, and the first cable 432 of the control member 43 is connected to the first end 511. The first auxiliary link 52 has a locked end 521 that rotates relative to the other first rotating shaft 14. The first pulling member 53 has a second guiding tube 531 positioned on the backrest frame 15, and a second pulling cable 532 passing through the second guiding tube 531, wherein two ends of the second pulling cable 532 are respectively connected to the second end 512 of the first main linking member 51 and the pulled end 521 of the first auxiliary linking member 52. The second end 512 is located at the rear side of the corresponding first rotating shaft 14, and the clamped end 521 is located at the front side of the corresponding first rotating shaft 14.

Referring to fig. 5, the second linking unit 60 includes a linking plate 61 axially disposed on one of the first rotating shafts 14, a second linking member 62 connected to the linking plate 61, a pair of pulling plates 63 respectively mounted on two sides of the bottom of the seat frame 13 and linked by the second linking member 62, a pair of pulling plates 64 connected to the pulling plates 63, a pair of second main linking members 65 axially disposed on the bottom of the seat frame 13 and located on one side of the pulling plates 64, and a pair of return springs 66 respectively connected between the pulling plates 64 and the second main linking members 65. The linking plate 61 has a first protrusion 611 corresponding to the lever 151, and a second protrusion 612 spaced apart from the first protrusion 611. The second pulling member 62 has a third guiding tube 621 positioned on the seat frame 13, a pair of fourth guiding tubes 622 positioned on the seat frame 13 and connected to the third guiding tube 621, a third pulling cable 623 penetrating inside the third guiding tube 621, and a pair of fourth pulling cables 624 connected to the third pulling cable 622 and respectively penetrating inside the fourth guiding tubes 622, wherein the ends of the fourth pulling cables 624 are respectively connected to the latch plate 63. The second main linking member 65 has a U-shaped hook 651.

For a further understanding of the nature and operation of the various elements of the invention, as well as the intended function and advantages thereof, reference should be made to the following detailed description and to the accompanying drawings, which are included to provide a further understanding of the invention.

As shown in fig. 1 and fig. 4, when the whole assembly of the present invention is completed and the backrest frame 15 is in the unfolded state relative to the backrest frame 13, the shift lever 151 is far away from the first protrusion 611 of the linkage plate 61 and approaches to the rear stop 134 (see fig. 4), the hooks 651 of the second main linkage 65 are respectively embedded and fastened to the fixing rod 101, and the second main linkage 65 is in the fastened state, so that the movable end 131 of the backrest frame 13 is also positioned relative to the fixing rod 101, that is, the backrest frame 13 is in the seating state, and the backrest frame 15 is in the back-leaning state.

When the user wants to fold, the user controls an activation key (not shown) located on the center console of the vehicle and activates the motor 41, the motor 41 drives the winding wheel 42 to rotate, so as to wind the first pulling cable 432, the first pulling cable 432 drives the first end 511 of the first main coupling component 51 to tilt upwards, and the second end 512 is rotated downwards, one end of the second pulling cable 532 pulling the first pulling member 53 by the second end 512 is pulled downwards (see fig. 6), and, at the same time, see fig. 7, the other end of the second cable 532 pulls the caught end 521 of the first secondary linkage 52 upward, that is, the first main linking component 51 and the first auxiliary linking component 52 rotate the first rotating shaft 14 synchronously, and the first rotating shaft 14 drives the back frame 15 to fold forward relative to the seat frame 13 by the elastic releasing action of the first elastic unit 20 (see fig. 8).

As shown in fig. 8 and 9, when the driving lever 151 presses the first protrusion 611 of the linking plate 61 during the process of folding the back frame 15 relative to the seat frame 13, the linking plate 61 rotates relative to the first rotating shaft 14 until the driving lever 151 abuts against the front stop 135 of the position-limiting plate 133, the third cable 623 is pulled by the rotation of the second protrusion 612, the third cable 623 pulls the fourth cable 624, the pulling plate 63 is pulled by the fourth cable 624, the pulling plate 64 is pulled to rotate, the pulling plate 64 pulls the second main linking member 65 to rotate by the return spring 66, and the hook 651 is disengaged from the fixing rod 101, so that the second main linking member 65 can be converted from the locked state to the disengaged state.

At this time, as shown in fig. 10, the back frame 15 and the seat frame 13 are folded forward relative to the positioning frame 11 by the elastic force of the second elastic member 30, and the movable end 131 of the seat frame 13 is far away from the fixing rod 101.

That is, the second main linking member 65 is linked by the first linking unit 50 to be transformed from the engaging state of being embedded in the fixing rod 101 to the disengaging state of being disengaged from the fixing rod 101, when the second main linking member 65 is in the engaging state, the movable end 131 of the seat frame 13 is positioned relative to the fixing rod 101, and when the second main linking member 65 is in the disengaging state, the elastic force of the second elastic member 30 can make the movable end 131 of the seat frame 13 away from the fixing rod 101.

As shown in fig. 10, after the back frame 15 of the seat unit 10 is folded forward relative to the seat frame 13, the whole of the back frame 15 and the seat frame 13 is folded relative to the positioning frame 11, and the folded whole of the back frame 15 and the seat frame 13 occupies a smaller volume, so as to place goods and facilitate the planning of the interior space of the carriage.

On the contrary, when the seat is to be unfolded for use, the operator only needs to press the movable end 131 of the seat frame 13 downward, then the hook 651 at the bottom of the seat frame 13 is engaged with the fixing rod 101, and then the backrest frame 15 is unfolded with respect to the seat frame 13, so as to return to the state shown in fig. 1.

Just the utility model discloses utilize the button and an electrical system (not shown) of a well control panel (not shown) to control electric seat, drive and just can accomplish a key upset function on the seat, and can accomplish this back of the chair frame 15 automatically and turn over for this seat frame 13 production is rolled over forward, this back of the chair frame 15 and this seat frame 13 whole again for locating rack 11 produces all actions of closing, and comparatively save time during the operation.

To sum up, the electric folding device for the seat of the utility model has simple integral structure and easy operation, and can really achieve the purpose of the utility model.

Claims (8)

1. The utility model provides an electronic folding device of seat, is applicable to the automobile body, the automobile body has at least a dead lever, electronic folding device of seat contains seat unit, at least one first elastic component, at least one second elastic component, drive unit, first interlock unit and second interlock unit, its characterized in that:

the seat unit comprises a pair of positioning frames, a pair of second rotating shafts, a seat frame, a pair of first rotating shafts and a back frame, wherein the positioning frames are positioned on one side of the fixing rod and connected to the vehicle body;

the first elastic piece is arranged between the chair seat frame and the chair back frame, and the elasticity of the first elastic piece can provide the folding of the chair back frame relative to the chair seat frame;

the second elastic piece is arranged between the positioning frame and the chair seat frame, and the elasticity of the second elastic piece can provide the folding of the chair seat frame relative to the positioning frame;

the driving unit is arranged on one of the chair seat frame and the chair back frame;

the first linkage unit comprises a first main linkage part connected with one of the first rotating shafts, and the first main linkage part is driven by the driving unit to drive the chair back frame to fold relative to the chair seat frame;

the second linkage unit comprises at least one second main linkage piece arranged on the chair seat frame, the second main linkage piece can be transformed from a buckling state of being embedded and buckled in the fixed rod into a breaking state of breaking away from the fixed rod by the linkage of the first linkage unit, when the second main linkage piece is positioned in the buckling state, the movable end of the chair seat frame is positioned relative to the fixed rod, and when the second main linkage piece is positioned in the breaking state, the elastic force of the second elastic piece can enable the movable end of the chair seat frame to be far away from the fixed rod.

2. The motorized seat folding device according to claim 1, characterized in that: the driving unit comprises a motor, a winding wheel and a control piece, wherein the motor is installed on the chair back frame, the winding wheel is driven by the motor, the control piece can be wound or released by the winding wheel, the control piece is connected with the first main linkage piece, the first linkage unit further comprises a first auxiliary linkage piece and a first traction piece, the first auxiliary linkage piece is connected with the other first rotating shaft, the first traction piece is connected between the first main linkage piece and the first auxiliary linkage piece, the winding motor is started to be capable of linking the first main linkage piece through the winding wheel, the first main linkage piece drives the first traction piece, the first traction piece drives the first auxiliary linkage piece, the first main linkage piece and the first auxiliary linkage piece synchronously rotate the first rotating shaft, and the first rotating shaft drives the chair back frame to be folded relative to the chair seat frame.

3. The motorized seat folding device according to claim 2, characterized in that: the second linkage unit comprises a first rotating shaft, a second linkage plate and a pair of brake plates, wherein the number of the second main linkage parts of the second linkage unit is two, the second linkage unit further comprises a linkage plate, a second traction part and a pair of brake plates, the linkage plate is axially arranged on one of the first rotating shaft, the second traction part is connected to the linkage plate, the pair of brake plates are linked by the second traction part and connected to the second main linkage part, when the backrest frame is folded relative to the backrest frame, the linkage plate is driven by the backrest frame to rotate, the second traction part can be pulled and the brake plates and the second main linkage part can be linked, and the second main linkage part can be converted into the disengagement state from the buckling state.

4. The motorized seat folding device according to claim 3, characterized in that: the first main linkage piece of the first linkage unit is provided with a first end and a second end which rotate relative to one of the first rotating shafts, the first auxiliary linkage piece is provided with a clamped end which rotates relative to the other first rotating shaft, the control piece is connected to the first end, and two ends of the first traction piece are respectively connected to the second end and the clamped end.

5. The motorized seat folding device according to claim 4, characterized in that: the control part of the driving unit is provided with a first guide pipe positioned on the chair back frame and a first inhaul cable penetrating through the first guide pipe, the first inhaul cable can be wound or released by the winding wheel, the first inhaul cable is connected to the first end, the first driving part of the first driving unit is provided with a second guide pipe positioned on the chair back frame and a second inhaul cable penetrating through the second guide pipe, and two ends of the second inhaul cable are respectively connected to the second end of the first main linkage part and the pulled end of the first auxiliary linkage part.

6. The motorized seat folding device according to claim 3, characterized in that: the second linkage unit further comprises a pair of pulling plates connected to the dragging plate and a pair of return springs respectively connected between the pulling plates and the second main linkage part, the linkage plates are respectively provided with a first convex part which can be dragged by the chair back frame and a second convex part which is arranged at an interval with the first convex part, the second traction part is provided with a third guide pipe positioned on the chair seat frame, a pair of fourth guide pipes positioned on the chair seat frame and communicated with the third guide pipe, a third inhaul cable penetrating through the third guide pipe and a pair of fourth inhaul cables connected with the third inhaul cable and respectively penetrating through the fourth guide pipe, and the tail ends of the fourth inhaul cables are respectively connected to the dragging plate.

7. The motorized seat folding device according to claim 1, characterized in that: the first elastic element is a volute spring, is sleeved outside one of the first rotating shafts, and is provided with a first positioning end and a first releasing end, wherein the first positioning end is positioned relative to the movable end, and the first releasing end is positioned on the chair back frame.

8. The motorized seat folding device according to claim 1, characterized in that: the second elastic element is a torsion spring, is sleeved outside the second rotating shaft and is provided with a second positioning end and a second releasing end, the second positioning end is positioned relative to the positioning frame, and the second releasing end is positioned on the chair seat frame.

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