CN210520521U

CN210520521U - Intelligent folding chair capable of being automatically folded

Info

Publication number: CN210520521U
Application number: CN201921729063.5U
Authority: CN
Inventors: 康新慧; 张望超; 张银余
Original assignee: Shanghai Huihan Industry Co Ltd
Current assignee: Shanghai Huihan Industry Co Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-05-15
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses an intelligent folding chair capable of automatically folding, which relates to the technical field of folding chairs and has the technical scheme that the intelligent folding chair comprises a lead screw, a first supporting block rotationally connected with the end part of the lead screw, a second supporting block rotationally connected with the lead screw, a sliding block in threaded connection with the lead screw, a first connecting rod hinged with the second supporting block and a second connecting rod hinged with the sliding block; one end of the second connecting rod, which is far away from the sliding block, is hinged with one end of the first connecting rod, which is far away from the second supporting block; a chair seat is fixed on one side of the second connecting rod; a first supporting rod is fixed at the top of the second supporting block; a supporting device is arranged between the chair seat and the first supporting rod; the screw rod is fixedly connected with the output end of the motor; one side of the chair seat is provided with a fixing mechanism; one side of the first supporting rod, which is close to the chair seat, is hinged with a chair back; a driving mechanism for driving the chair back to rotate is arranged between the first connecting rod and the chair back. The utility model provides a not enough problem of stability when folding chair expandes the state, reached the effect that improves folding chair expansion state's stability.

Description

Intelligent folding chair capable of being automatically folded

Technical Field

The utility model relates to a folding chair technical field, more specifically the saying so, it relates to an intelligence folding chair that can fold automatically.

Background

At present, chairs sold in the market generally have a folding function in order to be convenient for carrying.

In the prior art, reference may be made to a chinese utility model patent with an authorization publication number of CN207341494U, which discloses an automatic folding seat, comprising a first leg and a second leg hinged at both sides of a seat, wherein the top end of the second leg extends above a seat plate, the top end of the second leg is hinged with a seat back, and the top end of the first leg is hinged with the top end of the second leg; one end part of the chair seat is hinged on the vertical wall through a hinge, and the other end part is fixed with a limiting block.

However, the automatic folding chair needs to be supported by hinging the chair seat with the vertical wall, and the self-locking structure is lacked, so that the stability of the folding chair in the unfolding state is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a can automatic folding intelligent folding chair, it expandes through lead screw and slider drive folding chair, has reached the effect that improves folding chair expansion state's stability.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an intelligent folding chair capable of being automatically folded comprises a lead screw, a first supporting block rotationally connected with the end part of the lead screw, a second supporting block rotationally connected with one end, far away from the first supporting block, of the lead screw, a sliding block in threaded connection with the lead screw, a first connecting rod hinged with the first supporting rod and a second connecting rod hinged with the sliding block;

one end of the second connecting rod, which is far away from the sliding block, is hinged with one end of the first connecting rod, which is far away from the second supporting block; a seat is fixed on one side of the second connecting rod; a first supporting rod is fixed at the top of the second supporting block; a supporting device for supporting the chair seat is arranged between the chair seat and the first supporting rod; one end of the screw rod, which is close to the second supporting block, is fixedly connected with the output end of the motor;

a fixing mechanism for supporting the chair seat is arranged on one side of the chair seat, which is far away from the first connecting rod; one side of the first supporting rod, which is close to the chair seat, is hinged with a chair back; and a driving mechanism for driving the chair back to rotate is arranged between the first connecting rod and the chair back.

Through adopting above-mentioned technical scheme, the motor drives the lead screw and rotates behind the starter motor, the slider is to being close to second supporting shoe one side removal under the limiting displacement of first connecting rod and second connecting rod, because the distance between slider and the second supporting shoe is dwindled, the contained angle between first connecting rod and the second connecting rod diminishes, the seat support that is fixed in first connecting rod and second connecting rod junction rises, the seat support rises and supports the seat support through strutting arrangement when contacting with first supporting shoe, through the auto-lock structure between lead screw and the slider, first connecting rod and second connecting rod emergence pivoted possibility when reducing the seat support and strutting.

The utility model discloses further set up to: actuating mechanism keeps away from the circular arch of seat support one side and keeps away from first bracing piece one side articulated third connecting rod with the back of the chair including being fixed in first connecting rod, the third connecting rod be close to first supporting block one end with circular arch is articulated.

By adopting the technical scheme, when the sliding block moves towards the second supporting block, the first connecting rod rotates towards one side close to the chair back and drives the third connecting rod to ascend, the third connecting rod pushes the chair back to rotate from a horizontal state to a vertical state, the chair back is convenient to unfold in the rising process of the chair seat, and the automatic unfolding of the folding chair is realized.

The utility model discloses further set up to: the fixing mechanism comprises a bar-shaped through hole arranged on the chair seat, a supporting shaft connected with the bar-shaped through hole in a sliding mode along the axial direction of the lead screw, a bottom plate fixed at the bottom of the supporting shaft and a supporting piece arranged between the chair seat and the supporting shaft and used for supporting the chair seat.

Through adopting above-mentioned technical scheme, first connecting rod rotates the in-process to being close to back of the chair one side, and the seat support removes to being close to back of the chair one side along first connecting rod to make the back shaft carry out the slip of horizontal direction along strip through-hole, the seat support stops to support the seat support through support piece after rising, and the back shaft provides the guide effect to strip through-hole, reduces the seat support and takes place skew possibility at the rising in-process.

The utility model discloses further set up to: the support piece is a nut arranged at the bottom of the chair seat, and the nut is in threaded connection with the supporting shaft.

Through adopting above-mentioned technical scheme, the back of the chair stops rising the back, will set up in the nut and the back shaft threaded connection of seat support bottom, provides the supporting role through the nut to the seat support, is convenient for improve the stability of seat support under the expansion state.

The utility model discloses further set up to: the supporting device comprises a sinking groove arranged at the bottom of the chair seat, a second supporting rod fixed at the top of the bottom plate and a cross rod fixed at one side of the second supporting rod close to the first supporting rod; one end of the cross bar, which is far away from the second supporting rod, is fixedly connected with one side of the first supporting rod, which is close to the second supporting rod; an inserting mechanism for connecting the chair seat and the cross rod is arranged between the sinking groove and the cross rod.

Through adopting above-mentioned technical scheme, the seat support rebound to when contacting with the horizontal pole, the last bottom surface in heavy groove and the top and the left side laminating with the horizontal pole of left side wall difference one-to-one, the horizontal pole provides the support for the seat support, is convenient for improve the stability of seat support when the expansion state.

The utility model discloses further set up to: the inserting mechanism comprises a square through hole arranged on one side of the cross rod close to the chair seat, an inserting block arranged in the square through hole in a sliding mode along the axial direction of the lead screw, an inserting groove arranged on one side of the sinking groove close to the square through hole, a spring fixed to the top of the inserting groove and a pressing piece fixed to the bottom end of the spring and used for fixing the inserting block; a pressing component used for pushing the pressing piece to move upwards is arranged between the inserting block and the pressing piece; and a guide assembly for driving the pressing piece to move vertically is arranged between the pressing piece and the slot.

By adopting the technical scheme, after the insertion block is inserted into the slot, the pressing part is pressed against the top of the slot through the pressing component, the pressing part is subjected to the elastic force exerted by the spring in the compressed state, and the insertion block is pressed against the bottom of the slot, so that the insertion block is fixed in the slot, the possibility of separation of the seat after the seat is contacted with the cross rod is reduced, and the stability of the seat in the unfolded state is improved.

The utility model discloses further set up to: the pressing component comprises two inclined planes which are respectively arranged on the opposite inner sides of the pressing part and the inserting block.

By adopting the technical scheme, after the insertion block is inserted into the slot, the pressing part is pressed against the top of the slot through the pressing component, the pressing part is subjected to the elastic force exerted by the spring in a compressed state, and presses the insertion block against the bottom of the slot, so that the insertion block is fixed in the slot, the insertion block is conveniently inserted into the slot, and the seat is fixed through the insertion block.

The utility model discloses further set up to: the guide assembly comprises a guide shaft fixed to the top of the pressing piece and a circular through hole formed in the top of the slot, and the guide shaft is arranged in the circular through hole in a sliding mode along the vertical direction.

Through adopting above-mentioned technical scheme, circular through-hole provides the guide effect for the guiding axle, reduces the offset possibility of taking place in the removal process of holding-down piece to the slot top.

To sum up, the utility model discloses compare and have following beneficial effect in prior art:

1. the sliding block is driven by the motor to move, the sliding block drives the first connecting rod and the second connecting rod to bend, and drives the chair seat to rise, so that the folding chair can be unfolded automatically;

2. the chair back is driven to rotate upwards through the rotation of the first connecting rod, so that the automatic unfolding of the chair back is realized;

3. through the self-locking structure between the screw rod and the sliding block, the possibility of rotation of the first connecting rod and the second connecting rod when the seat is unfolded is reduced.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a schematic view showing the structure of the chair back according to the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a schematic structural view of the middle prominent supporting device of the present invention;

fig. 5 is an enlarged schematic view of B in fig. 4.

In the figure: 1. a lead screw; 11. a first support block; 12. a second support block; 13. a slider; 14. a first support bar; 15. a base; 2. a first link; 21. a second link; 3. a chair seat; 4. a motor; 5. a support device; 51. sinking a groove; 52. a second support bar; 53. a cross bar; 54. a plug-in mechanism; 541. a square through hole; 542. inserting a block; 543. a slot; 544. a spring; 545. a pressing member; 546. a pressing component; 5461. a bevel; 547. a guide assembly; 5471. a guide shaft; 5472. a circular through hole; 6. a fixing mechanism; 61. a strip-shaped through hole; 62. a support shaft; 63. a base plate; 64. a pull ring; 65. a connecting strip; 7. a chair back; 71. a drive mechanism; 72. a circular protrusion; 73. and a third link.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b): an intelligent folding chair capable of being automatically folded is shown in fig. 1 and 2 and comprises a screw rod 1, a first supporting block 11 rotatably connected with the end part of the screw rod 1, a second supporting block 12 rotatably connected with one end, far away from the first supporting block 11, of the screw rod 1, a sliding block 13 in threaded connection with the screw rod 1, a first supporting rod 14 fixed at the top of the second supporting block 12, a first connecting rod 2 hinged with the first supporting rod 14 and a second connecting rod 21 hinged with the sliding block 13; one end of the second connecting rod 21 far away from the sliding block 13 is hinged with one end of the first connecting rod 2 far away from the second supporting block 12. The seat 3 is fixed to a side surface of the second link 21. The first support block 11 and the second support block 12 are both fixed on the base 15.

As shown in fig. 1 and 2, one end of the screw rod 1 close to the second supporting block 12 is fixedly connected with the output end of the motor 4; the motor 4 is mounted on the side of the second support block 12 remote from the slide 13. A support device 5 for supporting the seat 3 is arranged between the seat 3 and the first support bar 14. One side of the seat 3, which is far away from the first connecting rod 2, is provided with a fixing mechanism 6 for supporting the seat 3. The side surface of the first supporting rod 14 is hinged with a chair back 7; a driving mechanism 71 for driving the seat back 7 to rotate is arranged between the first connecting rod 2 and the seat back 7. Motor 4 drives lead screw 1 and rotates behind the starter motor 4, slider 13 is to being close to second supporting shoe 12 one side removal under the limiting displacement of first connecting rod 2 and second connecting rod 21, because the distance between slider 13 and the second supporting shoe 12 reduces, the contained angle between first connecting rod 2 and the second connecting rod 21 diminishes, the seat support 3 that is fixed in first connecting rod 2 and the junction of second connecting rod 21 rises, seat support 3 rises to and supports seat support 3 through strutting arrangement 5 when 14 contacts with first supporting rod.

As shown in fig. 2, the driving mechanism 71 includes a circular protrusion 72 fixed on a side of the first link 2 away from the seat 3 and a third link 73 hinged to a side of the backrest 7 away from the first support rod 14, and one end of the third link 73 close to the first support block 11 is hinged to the circular protrusion 72. When the slider 13 moves towards the second supporting block 12, the first link 2 rotates towards the side close to the chair back 7, so as to drive the third link 73 to ascend, and the third link 73 pushes the chair back 7 to rotate from the horizontal state to the vertical state.

As shown in fig. 2 and 3, the fixing mechanism 6 includes a bar-shaped through hole 61 formed in the top surface of the seat 3, a supporting shaft 62 connected to the bar-shaped through hole 61 in a sliding manner along the axial direction of the screw rod 1, and a bottom plate 63 fixed to the bottom of the supporting shaft 62; the bottom of the seat 3 is provided with a nut for supporting the seat 3, and the nut is in threaded connection with the supporting shaft 62. A connecting strip 65 is fixed on one side of the bottom plate 63 close to the second supporting block 12, and one end of the connecting strip 65 far away from the bottom plate 63 is fixedly connected with the second supporting block 12. Because first connecting rod 2 rotates to being close to back of the chair 7 one side, consequently seat support 3 rises the in-process and can carry out the removal of horizontal direction to being close to back of the chair 7 one side along with first connecting rod 2, and back of the chair 7 stops to rise the back, will set up in the nut and the back shaft 62 threaded connection of seat support 3 bottom to fix seat support 3.

As shown in fig. 4 and 5, the supporting device 5 includes a sinking groove 51 formed at the bottom of the seat 3, a second supporting rod 52 fixed at the top of the bottom plate 63, and a cross bar 53 fixed at one side of the second supporting rod 52 close to the first supporting rod 14; one end of the cross bar 53, which is far away from the second support bar 52, is fixedly connected with one side of the first support bar 14, which is close to the second support bar 52. When the seat 3 moves upwards to contact with the cross bar 53, the upper bottom surface and the left side wall of the sink groove 51 are respectively attached to the top and the left side of the cross bar 53 in a one-to-one correspondence manner. An inserting mechanism 54 for connecting the seat 3 and the cross bar 53 is arranged between the sinking groove 51 and the cross bar 53. The cross bar 53 provides support for the seat 3 after the sinker 51 contacts the cross bar 53.

As shown in fig. 5, the plugging mechanism 54 includes a square through hole 541 formed in a side surface of the cross bar 53, an insertion block 542 slidably disposed in the square through hole 541 along an axial direction of the screw rod 1, a slot 543 formed in one side of the sinking groove 51 close to the square through hole 541, a spring 544 fixed to a top of the slot 543, and a pressing member 545 fixed to a bottom end of the spring 544 and used for fixing the insertion block 542. A pressing component 546 for pushing the pressing piece 545 to move upwards is arranged between the inserting block 542 and the pressing piece 545; a guide component 547 for driving the pressing member 545 to move vertically is disposed between the pressing member 545 and the insertion groove 543. After the insertion block 542 is inserted into the slot 543, the pressing member 545 is pressed against the top of the slot 543 by the pressing member 546, and the pressing member 545 is pressed against the insertion block 542 against the bottom of the slot 543 by the elastic force of the compressed spring 544, so that the insertion block 542 is fixed in the slot 543.

As shown in fig. 5, the pressing member 546 includes two inclined surfaces 5461 respectively opened at opposite inner sides of the pressing member 545 and the inserting block 542. When the inserting block 542 contacts the pressing member 545, the pressing member 545 is pressed against the top of the slot 543 through the inclined surface 5461, and the pressing member 545 moves towards the top of the slot 543.

As shown in fig. 5, the guiding assembly 547 includes a guiding shaft 5471 fixed on the top of the pressing member 545 and a circular through hole 5472 opened on the top of the slot 543, and the guiding shaft 5471 is slidably disposed in the circular through hole 5472 along the vertical direction. The circular through hole 5472 provides a guiding function for the guiding shaft 5471, and reduces the possibility of deviation of the pressing member 545 during moving to the top of the slot 543. One end of the guide shaft 5471 remote from the pressing member 545 is fixed to the pull ring 64 for driving the pressing member 545 to move to the side remote from the insert block 542.

The working principle of the embodiment is as follows:

motor 4 drives lead screw 1 and rotates behind the starter motor 4, slider 13 is to being close to second supporting shoe 12 one side removal under the limiting displacement of first connecting rod 2 and second connecting rod 21, because the distance between slider 13 and the second supporting shoe 12 reduces, the contained angle between first connecting rod 2 and the second connecting rod 21 diminishes, the seat support 3 that is fixed in first connecting rod 2 and the junction of second connecting rod 21 rises, seat support 3 rises to and supports seat support 3 through strutting arrangement 5 when 14 contacts with first supporting rod. When the first link 2 rotates to the side close to the chair back 7, the third link 73 is driven to ascend, and the third link 73 pushes the chair back 7 to rotate from the horizontal state to the vertical state.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a can automatic folding intelligent folding chair which characterized in that: the device comprises a screw rod (1), a first supporting block (11) rotatably connected with the end part of the screw rod (1), a second supporting block (12) rotatably connected with one end, far away from the first supporting block (11), of the screw rod (1), a sliding block (13) in threaded connection with the screw rod (1), a first supporting rod (14) fixed at the top of the second supporting block (12), a first connecting rod (2) hinged with the first supporting rod (14) and a second connecting rod (21) hinged with the sliding block (13);

one end of the second connecting rod (21) far away from the sliding block (13) is hinged with one end of the first connecting rod (2) far away from the second supporting block (12); a seat (3) is fixed on one side of the second connecting rod (21); a first supporting rod (14) is fixed at the top of the second supporting block (12); a supporting device (5) for supporting the seat (3) is arranged between the seat (3) and the first supporting rod (14); one end of the screw rod (1) close to the second supporting block (12) is fixedly connected with the output end of the motor (4);

a fixing mechanism (6) for supporting the seat (3) is arranged on one side of the seat (3) far away from the first connecting rod (2); one side of the first supporting rod (14) close to the seat (3) is hinged with a chair back (7); and a driving mechanism (71) for driving the chair back (7) to rotate is arranged between the first connecting rod (2) and the chair back (7).

2. The intelligent folding chair capable of automatically folding as claimed in claim 1, wherein: actuating mechanism (71) are including being fixed in first connecting rod (2) and keeping away from circular arch (72) of seat support (3) one side and keeping away from first bracing piece (14) one side articulated third connecting rod (73) with back of the chair (7), third connecting rod (73) be close to first supporting block (11) one end with circular arch (72) are articulated.

3. The intelligent folding chair capable of automatically folding as claimed in claim 1, wherein: fixing mechanism (6) including set up bar through-hole (61) on seat support (3), with bar through-hole (61) along support shaft (62) that lead screw (1) axial slip is connected, be fixed in bottom plate (63) of support shaft (62) bottom and set up the support piece that is used for supporting seat support (3) between seat support (3) and support shaft (62).

4. The intelligent folding chair capable of automatically folding as claimed in claim 3, wherein: the supporting piece is a nut arranged at the bottom of the chair seat (3), and the nut is in threaded connection with the supporting shaft (62).

5. The intelligent folding chair capable of automatically folding as claimed in claim 1, wherein: the supporting device (5) comprises a sinking groove (51) arranged at the bottom of the chair seat (3), a second supporting rod (52) fixed at the top of the bottom plate (63) and a cross rod (53) fixed at one side of the second supporting rod (52) close to the first supporting rod (14); one end of the cross bar (53) far away from the second support bar (52) is fixedly connected with one side of the first support bar (14) close to the second support bar (52); an inserting mechanism (54) for connecting the chair seat (3) and the cross bar (53) is arranged between the sinking groove (51) and the cross bar (53).

6. The intelligent folding chair capable of automatically folding as claimed in claim 5, wherein: the inserting mechanism (54) comprises a square through hole (541) formed in one side, close to the seat (3), of the cross rod (53), an inserting block (542) arranged in the square through hole (541) in a sliding mode along the axial direction of the screw rod (1), an inserting groove (543) formed in one side, close to the square through hole (541), of the sinking groove (51), a spring (544) fixed to the top of the inserting groove (543) and a pressing piece (545) fixed to the bottom end of the spring (544) and used for fixing the inserting block (542); a pressing component (546) for pushing the pressing piece (545) to move towards the top of the slot (543) is arranged between the inserting block (542) and the pressing piece (545); a guide assembly (547) for driving the pressing piece (545) to move vertically is arranged between the pressing piece (545) and the inserting groove (543).

7. The intelligent folding chair capable of being automatically folded according to claim 6, wherein: the pressing component (546) comprises two inclined surfaces (5461) which are respectively arranged on the opposite inner sides of the pressing component (545) and the inserting block (542).

8. The intelligent folding chair capable of being automatically folded according to claim 6, wherein: the guide assembly (547) comprises a guide shaft (5471) fixed to the top of the pressing piece (545) and a circular through hole (5472) formed in the top of the insertion groove (543), and the guide shaft (5471) is vertically arranged in the circular through hole (5472) in a sliding mode.