CN117860059A - Turnover folding seat - Google Patents

Abstract

The invention relates to and discloses a turnover folding seat. Relates to the technical field of seats. The chair comprises support legs arranged on two sides, two armrests respectively arranged on the tops of the two support legs, a connecting column for connecting the two support legs, a backrest fixedly arranged on the rear side of the connecting column, and a seat rotatably connected with the connecting column; the connecting column is provided with a limit groove, and the chair seat is provided with a turnover adjusting device which can be matched with or separated from the limit groove. According to the invention, the turnover adjusting device is matched with or separated from the limit groove, so that the conversion between the horizontal fixing state and the vertical fixing state of the seat can be realized, and the seat can be turned to the vertical fixing state when the seat is not used, so that the transportation or carrying cost of the seat can be reduced when the seat is transported or carried, the occupation of the seat to the space can be reduced in a use scene (such as a meeting place), and the use experience of the seat is improved.

Description

Turnover folding seat

Technical Field

The invention relates to the technical field of seats, in particular to a turnover folding seat.

Background

The seat is a household furniture which is frequently used in our daily life and office scenes and is mainly used for people to sit down and rest. Existing seats generally include a back rest, armrests, and a seat and legs upon which a person can sit and then rest against the back rest with both hands resting upon the armrests. The traditional seat adopts a whole-mounting process structure, so that the space occupied by the seat is large, inconvenience exists in the transportation and carrying processes, and the seat is placed in a scene (such as a meeting place) where more people participate, so that more space can be occupied, the space utilization rate of the scene is reduced, and the cleaning and sweeping work of the scene is inconvenient. In order to reduce occupation of the seat to the space, the split type seat can be adopted, but the disassembly and assembly of the split type seat are time-consuming and labor-consuming, the use experience of a user is affected, and the split type seat is not applicable to scenes of participation of multiple persons and repeated use.

Chinese patent CN218999892U, publication No. 2023-05-12 disclose a new type seat, which comprises a seat cushion, support legs and connecting buckles, the connecting buckles are fixed on the support legs on the left and right sides. The connecting buckle comprises a buckle body and a bending hook which is bent upwards and vertically outwards from the buckle body; the front end of the bending hook is a hollow bending structure which is vertically bent upwards, and the tail end of the bending hook is connected with the buckle body. The connecting buckle can be used for conveniently connecting seats side by side, so that a meeting place is tidier and orderly; the seats can be prevented from toppling over during stacking, transportation and placement. But the seat occupies a larger space, is inconvenient to transport and carry, occupies more space when being placed in a meeting place, reduces the space utilization rate of the meeting place, and is inconvenient for cleaning the meeting place.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides the turnover folding seat, so that the transportation or carrying cost of the seat can be reduced during transportation or carrying, and the occupation of the seat to the space can be reduced in a use scene (such as a meeting place), thereby improving the use experience of the seat.

The utility model provides a turnover folding seat which comprises supporting legs arranged on two sides, two armrests respectively arranged on the tops of the two supporting legs, a connecting column connected with the two supporting legs, a backrest fixedly arranged on the rear side of the connecting column, and a seat rotatably connected with the connecting column; the seat is characterized in that a limiting groove is formed in the connecting column, a turnover adjusting device which can be matched with or separated from the limiting groove is arranged on the seat, the turnover adjusting device is matched with the limiting groove and can limit the seat to rotate on the connecting column, and the turnover adjusting device is separated from the limiting groove and can enable the seat to rotate on the connecting column.

Further, the overturning adjusting device comprises a movable rod which is arranged at the bottom of the chair seat and can move towards or away from the direction of the connecting column, and a driving assembly which is arranged at the bottom of the chair seat and is used for driving the movable rod to move, wherein the movable rod is matched with the limit groove in the process of moving towards the direction of the connecting column, and the movable rod is separated from the limit groove in the process of moving towards the direction of the connecting column.

Further, the driving assembly comprises a fixed plate fixedly installed at the bottom of the chair seat and a sliding block in sliding connection with the fixed plate, a wedge block is arranged at the bottom of the sliding block, and a first roller in rolling connection with the wedge block is arranged at the top of the movable rod.

Further, the driving assembly further comprises a guide plate fixedly installed at the bottom of the chair seat, and a first spring, one end of the first spring is connected with the guide plate, the other end of the first spring is connected with the movable rod, a guide hole for the movable rod to penetrate through is formed in the guide plate, the guide plate is arranged between the fixed plate and the connecting column, and the first spring is arranged between the guide plate and the fixed plate.

Further, the driving assembly further comprises a first sliding groove arranged at the bottom of the seat, an operating spanner which is in sliding connection with the first sliding groove, a pull rope with one end connected with the operating spanner and the other end connected with the sliding block, and a second spring with one end connected with the sliding block and the other end connected with the fixed plate, wherein the pull rope and the second spring are respectively connected with two opposite side ends of the sliding block.

Further, be equipped with in the fixed plate and be used for holding the cavity of slider, the cavity top is equipped with second spout, bottom are equipped with the bar hole, the slider top be equipped with second spout complex bellying, the wedge runs through the bar hole, the length in bar hole is greater than the length of wedge, be equipped with on the fixed plate with the cavity is with the through-hole of external intercommunication, stay cord one end runs through behind the through-hole, with the slider is connected.

Further, the bottom of the chair seat is provided with a rotating sleeve sleeved on the connecting column, a first fan-shaped groove is formed in the inner side of the rotating sleeve, a first fan-shaped protrusion matched with the first fan-shaped groove is arranged on the connecting column, and the arc length of the first fan-shaped groove is larger than that of the first fan-shaped protrusion.

Further, the limiting groove comprises a flat groove arranged at the top of the connecting column, a furling groove arranged at the front side of the connecting column, and a guide groove for connecting the flat groove and the furling groove; when the movable rod is out of engagement with the flat-laying groove, the movable rod can move to the folding groove along the guide groove, and when the movable rod is out of engagement with the folding groove, the movable rod can move to the flat-laying groove along the guide groove.

Further, the junction of guide way with keep flat the groove is equipped with down turns over the portion, the guide way with draw in the junction of groove is equipped with and turns over the portion, movable rod bottom is equipped with the second gyro wheel, turn over down the portion and be used for making the second gyro wheel follow keep flat the groove top transition extremely the guide way, turn over the portion and be used for making the second gyro wheel follow draw in the groove bottom transition extremely the guide way.

Further, the landing leg is including locating inboard fixed stabilizer blade to and locate the rotation stabilizer blade in the outside, fixed stabilizer blade with spliced pole one end fixed connection, the rotation stabilizer blade can rotate certain angle on the fixed stabilizer blade, the handrail rotate connect in the top of rotation stabilizer blade.

Further, the inner side of the rotary support leg is provided with a second fan-shaped groove, the outer side of the fixed support leg is provided with a second fan-shaped protrusion matched with the second fan-shaped groove, and the arc length of the second fan-shaped groove is larger than that of the second fan-shaped protrusion.

Further, the top of the rotary support leg is provided with a rotary groove, two opposite side walls of the rotary groove are provided with rotary holes, and two sides of the handrail are provided with rotary shafts respectively connected with the two rotary holes in a rotary mode.

Further, a mounting plate for mounting the backrest and a reinforcing rib plate for connecting the mounting plate with the connecting column are arranged on the rear side of the connecting column.

The turnover folding seat has the following gain effects:

(1) The seat is matched with or separated from the limit groove through the overturning and adjusting device, so that the conversion between the horizontal fixing state and the vertical fixing state of the seat can be realized, and the seat can be overturned to be in the vertical fixing state when the seat is not used, thereby not only reducing the transportation or carrying cost of the seat, but also reducing the occupation of the seat to the space in a use scene (such as a meeting place) and improving the use experience of the seat;

(2) The turnover adjusting device of the seat comprises a movable rod and a driving assembly, wherein the movable rod and the driving assembly are arranged at the bottom of the seat, and the movable rod can move towards the direction close to or far from the connecting column at the bottom of the seat by operating the driving assembly by a user;

(3) The inner ring of the rotating sleeve of the seat is provided with the first fan-shaped groove, and the outer wall of the connecting column is provided with the first fan-shaped bulge, so that the first fan-shaped bulge is limited through the first fan-shaped groove, the rotating angle of the seat is guided, and the structural stability of the seat in a horizontal fixing state or a vertical fixing state is enhanced;

(4) The arc-shaped downward turning part is arranged at the joint of the guide groove and the horizontal groove of the seat, the second roller is arranged at the bottom of the movable rod, and after the bottom of the movable rod is pulled out from the horizontal groove, the second roller can more smoothly transition from the top of the horizontal groove to the guide groove through the transition of the downward turning part, and the user does not need to apply pressure to the seat, so that the seat is simpler and more convenient to use, and the use experience of the user is improved;

(5) The radius of the guide groove of the seat is gradually reduced from the flat-placed groove to the folding groove, namely, when the guide groove extends from the flat-placed groove to the folding groove, the included angle between the tangent line and the horizontal direction is gradually increased, and when the second rolling is rolled downwards along the guide groove, the gradient is gradually increased, so that the seat is smoothly turned to be in a vertical state under the action of self gravity;

(6) The sectional area of the front side of the central axis of the connecting column is smaller than the sectional area of the rear side of the central axis of the connecting column, namely the supporting position of the connecting column to the seat is positioned in front, so that when a user sits on the front side of the seat, the pressure caused by the cooperation of the movable rod and the inserting groove and the cooperation of the first fan-shaped bulge and the first fan-shaped groove is reduced, the structural stability of the seat is improved, and the service life of the seat is prolonged;

(7) The arc-shaped upturning part is arranged at the joint of the guide groove and the folding groove of the seat, and the joint of the guide groove and the folding groove is transited through the upturning part, so that the second roller can move into the guide groove through the upturning part without the operation of pulling an operation spanner by a user, and the upward overturning of the seat can be realized, thereby the use of the seat is simpler and more convenient, and the use experience of the user is further improved;

(8) The rotating support leg of the seat can rotate on the fixed support leg by a certain angle, so that the support leg of the seat can be folded or unfolded, and therefore, when the seat is not needed to be used, the support leg can be folded by rotating the rotating support leg by a certain angle on the fixed support leg, and the occupation of the seat to the space is further reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to identify like elements.

FIG. 1 is a schematic view of a flip seat according to an embodiment of the present invention;

FIG. 2 is a schematic view of a structure of a turnover adjusting device of a turnover folding seat at a bottom of a seat according to an embodiment of the present invention;

FIG. 3 is a schematic view showing a structure of a movable bar of a flip seat according to an embodiment of the present invention;

FIG. 4 is a schematic view of a connecting column of a folding seat according to an embodiment of the present invention;

FIG. 5 is a schematic view of a sliding connection between a slider and a fixed plate of a folding seat according to an embodiment of the present invention;

FIG. 6 is a schematic view of a slider of a flip seat according to an embodiment of the present invention in a structure inside a fixed plate;

FIG. 7 is a schematic cross-sectional view of a connecting post of a flip seat at a limit slot according to an embodiment of the present invention;

FIG. 8 is a schematic view of a structure of a flip seat armrest to leg connection according to an embodiment of the present invention;

FIG. 9 is a schematic view showing the structure of a fixing leg of a roll-over folding seat according to an embodiment of the present invention;

Fig. 10 is an exploded view of a connection of an armrest and a rotating leg of a roll-over folding seat according to an embodiment of the present invention.

In the figure: 1. a support leg; 11. fixing the support legs; 111. a second fan-shaped protrusion; 12. a rotating support leg; 121. a second fan-shaped groove; 122. a rotating groove; 1221. a rotation hole; 2. an armrest; 21. a rotating shaft; 3. a connecting column; 31. a limit groove; 311. a horizontal groove; 312. a gathering groove; 313. a guide groove; 314. a turndown portion; 315. an upturning part; 32. a first fan-shaped protrusion; 33. a mounting plate; 34. reinforcing rib plates; 4. a backrest; 5. a seat; 51. a first chute; 52. rotating the sleeve; 521. a first fan-shaped groove; 6. a turnover adjusting device; 61. a movable rod; 611. a first roller; 612. a second roller; 62. a fixing plate; 621. a cavity; 622. a second chute; 623. a bar-shaped hole; 624. a through hole; 63. a slide block; 631. wedge blocks; 632. a boss; 64. a guide plate; 65. a first spring; 66. operating a wrench; 67. a pull rope; 68. and a second spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and all other embodiments obtained by those skilled in the art without making any creative effort based on the embodiments of the present invention are included in the protection scope of the present invention.

The embodiment of the invention provides a turnover folding seat, which comprises support legs 1 arranged on two sides, two armrests 2 respectively arranged on the tops of the two support legs 1, a connecting column 3 connected with the two support legs 1, a backrest 4 fixedly arranged on the rear side of the connecting column 3, and a seat support 5 rotatably connected with the connecting column 3; the connecting column 3 is provided with a limit groove 31, the seat 5 is provided with a turnover adjusting device 6 which can be matched with or separated from the limit groove 31, the turnover adjusting device 6 is matched with the limit groove 31, the rotation of the seat 5 on the connecting column 3 can be limited, the turnover adjusting device 6 is separated from the limit groove 31, and the seat 5 can rotate on the connecting column 3, and referring to fig. 1.

When a user sits on the seat, the direction in which the user faces is forward and the direction in which the user faces away is rearward, and all occurrences of "front" and "rear" are referenced herein. In the application, the seat comprises two support legs 1, two armrests 2, a connecting column 3, a backrest 4 and a seat 5, wherein the two support legs 1 are respectively arranged at two sides and used for supporting the seat; the two armrests 2 are respectively arranged at the tops of the two supporting legs 1 and are used for supporting the hands of a user; the connecting column 3 connects the two legs 1, and the backrest 4 is fixedly installed at the rear side of the connecting column 3 for supporting the back of the user.

The seat 5 is used for supporting buttocks of a user, the seat 5 is rotationally connected with the connecting column 3, the overturning adjusting device 6 is arranged on the seat 5, and the limiting groove 31 is arranged on the connecting column 3. When the turnover adjusting device 6 is disengaged from the limiting groove 31, the seat 5 can rotate on the connecting column 3, so that the seat 5 can be turned downwards from a horizontal state to a vertical state or turned upwards from the vertical state to the horizontal state; when the turnover adjusting device 6 is matched with the limit groove 31, the rotation of the seat 5 on the connecting column 3 can be limited, so that the seat 5 is fixed in a horizontal state or in a vertical state.

When the seat needs to be used, the seat 5 can be turned from a vertical fixing state to a horizontal fixing state, and the specific operation steps are as follows: firstly, the overturning and adjusting device 6 is separated from the connecting column 3, then the chair seat 5 is overturned from a vertical state to a horizontal state on the connecting column 3, and then the overturning and adjusting device 6 is matched with the limit groove 31 on the connecting column 3, so that the chair seat 5 is fixed in the horizontal state, and a user can sit on the chair seat 5; when the seat is not needed to be used, the seat 5 can be turned from a horizontal fixing state to a vertical fixing state, and the specific operation steps are as follows: firstly, the overturning and adjusting device 6 is separated from the limiting groove 31 on the connecting column 3, then the chair seat 5 is overturned from a horizontal state to a vertical state on the connecting column 3, and then the overturning and adjusting device 6 is matched with the limiting groove 31 on the connecting column 3, so that the chair seat 5 is fixed in the vertical state.

Because the seat support 5 is in the vertical fixed state, occupation space is less, so that transportation or carrying cost of the seat can be reduced during transportation or carrying, occupation of the seat to space can be reduced in a use scene (such as a meeting place), cleaning of the use scene by a user and passing through the middle of two adjacent rows of seats are facilitated, and space utilization rate of the use scene and use experience of the seat are improved.

In this embodiment, the turnover adjusting device 6 includes a movable rod 61 disposed at the bottom of the seat 5 and capable of moving toward or away from the connecting post 3, and a driving component disposed at the bottom of the seat 5 and used for driving the movable rod 61 to move, wherein the movable rod 61 cooperates with the limiting groove 31 during moving toward the connecting post 3, and the movable rod 61 is disengaged from the limiting groove 31 during moving away from the connecting post 3, as shown in fig. 2. In this application, the turnover adjusting device 6 includes a movable rod 61 and a driving assembly, and the movable rod 61 and the driving assembly are both disposed at the bottom of the seat 5, and the movable rod 61 can be moved in a direction approaching or separating from the connecting column 3 at the bottom of the seat 5 by operating the driving assembly by a user.

When the movable rod 61 moves towards the direction approaching the connecting column 3, the movable rod 61 can be inserted into the limit groove 31, so that the seat 5 is fixed by the cooperation of the movable rod 61 and the limit groove 31; when the movable rod 61 moves away from the connecting post 3, the movable rod 61 can be pulled out of the limiting groove 31, so that the seat 5 can rotate on the connecting post 3 through the separation of the movable rod 61 from the limiting groove 31.

In this embodiment, the driving assembly includes a fixed plate 62 fixedly installed at the bottom of the seat 5, and a sliding block 63 slidably connected to the fixed plate 62, a wedge 631 is disposed at the bottom of the sliding block 63, and a first roller 611 rollingly connected to the wedge 631 is disposed at the top of the movable rod 61, as shown in fig. 2, 3 and 6. In this application, the driving assembly includes a fixing plate 62 and a slider 63, the fixing plate 62 is fixedly installed at the bottom of the seat 5, and the slider 63 is slidably connected with the fixing plate 62. A wedge 631 is provided at the bottom of the slider 63, and a first roller 611 is provided at the top of the movable lever 61, and the first roller 611 is in rolling connection with the wedge 631.

In this application, the "top" and "bottom" of all the components in the seat are referenced to the state of the component when the seat 5 is in a horizontally secured state. Since the sliding block 63 is slidably connected with the fixed plate 62, the first roller 611 at the top of the movable rod 61 is in rolling connection with the wedge-shaped block 631 at the bottom of the sliding block 63, so that the connection position of the first roller 611 and the wedge-shaped block 631 can be adjusted by sliding the sliding block 63 on the fixed plate 62, thereby driving the movable rod 61 to move in a direction approaching or separating from the connecting column 3.

In this embodiment, the driving assembly further includes a guide plate 64 fixedly installed at the bottom of the seat 5, and a first spring 65 having one end connected to the guide plate 64 and the other end connected to the movable rod 61, wherein a guide hole for the movable rod 61 to pass through is provided on the guide plate 64, the guide plate 64 is disposed between the fixed plate 62 and the connecting post 3, and the first spring 65 is disposed between the guide plate 64 and the fixed plate 62, as shown in fig. 2. In this application, the driving assembly includes a guide plate 64 and a first spring 65, the guide plate 64 is fixedly installed at the bottom of the seat 5, and the guide plate 64 is located between the fixing plate 62 and the connection post 3, and the first spring 65 is disposed between the fixing plate 62 and the guide plate 64.

The guide plate 64 is provided with a guide hole, the movable rod 61 penetrates the guide hole, the top of the movable rod 61 extends between the fixed plate 62 and the guide plate 64, the first roller 611 is in rolling connection with the wedge-shaped block 631 at the bottom of the sliding block 63, the bottom of the movable rod 61 extends between the guide plate 64 and the connecting column 3, the bottom of the movable rod 61 can be spliced with the limit groove 31 on the connecting column 3 or pulled out of the limit groove 31, the movable rod 61 is limited through the guide hole, the movable rod 61 can only move along the central axis direction of the guide hole, and the movable rod 61 is prevented from deflecting all around.

The first spring 65 is disposed between the fixed plate 62 and the guide plate 64, and one end of the first spring 65 is connected to a portion of the movable rod 61 located between the guide plate 64 and the fixed plate 62, and the other end is connected to the guide plate 64. When the turnover adjusting device 6 is required to be matched with the limit groove 31, the sliding block 63 moves on the fixed plate 62, the first roller 611 rolls on the inclined surface of the wedge-shaped block 631, and the movable rod 61 is pushed to move towards the direction close to the connecting column 3 under the abutting action of the wedge-shaped block 631, and meanwhile the first spring 65 is compressed until the bottom of the movable rod 61 is inserted into the limit groove 31.

When the turnover adjusting device 6 is required to be disengaged from the limit groove 31, the sliding block 63 moves reversely on the fixed plate 62, and the movable rod 61 is pushed to move away from the connecting column 3 under the elastic action of the self deformation of the first spring 65, and meanwhile, the first roller 611 rolls reversely on the inclined surface of the wedge-shaped block 631 until the bottom of the movable rod 61 is pulled out from the limit groove 31.

In the present application, taking the seat 5 in a horizontal fixed state as an example, the inclined surface of the wedge-shaped block 631 is inclined obliquely upward from front to back, that is, when the slide block 63 moves backward, the inclined surface of the wedge-shaped block 631 abuts against the first roller 611, so as to push the movable rod 61 to move toward the connecting post 3 and compress the first spring 65; when the slider 63 moves forward, the inclined surface of the wedge 631 can avoid the moving path of the first roller 611, so that the elastic force of the first spring 65 can push the movable rod 61 to move in a direction away from the connection post 3.

In this embodiment, the driving assembly further includes a first sliding groove 51 disposed at the bottom of the seat 5, an operating wrench 66 slidably connected to the first sliding groove 51, a pull rope 67 having one end connected to the operating wrench 66 and the other end connected to the sliding block 63, and a second spring 68 having one end connected to the sliding block 63 and the other end connected to the fixing plate 62, and the pull rope 67 and the second spring 68 are respectively connected to opposite side ends of the sliding block 63, as shown in fig. 2 and 6. In this application, the driving assembly further includes a first sliding groove 51, an operating wrench 66, a pull rope 67 and a second spring 68, the first sliding groove 51 is disposed at the bottom of the seat 5, the operating wrench 66 is slidably connected with the first sliding groove 51, the pull rope 67 connects the operating wrench 66 with one side end of the sliding block 63, and the second spring 68 connects the other opposite side end of the sliding block 63 with the fixing plate 62.

When the turnover adjusting device 6 is required to be disengaged from the limiting groove 31, a user can move along the first sliding groove 51 by pulling the operating wrench 66, pull the sliding block 63 to move on the fixed plate 62 by the pull rope 67, stretch the second spring 68 by the sliding block 63, and then push the movable rod 61 to move in a direction away from the connecting column 3 by restoring the elastic force of the deformation of the first spring 65 until the bottom of the movable rod 61 is pulled out from the limiting groove 31; when the turnover adjusting device 6 is required to be matched with the limit groove 31, a user releases the operation wrench 66, and pulls the operation wrench 66 to move reversely on the fixed plate 62 under the elastic action of the self deformation of the second spring 68, and pulls the operation wrench 66 to move reversely along the first sliding groove 51 by the pull rope 67, and simultaneously pushes the movable rod 61 to move towards the direction close to the connecting column 3 under the abutting action of the wedge-shaped block 631, and compresses the first spring 65 until the bottom of the movable rod 61 is spliced in the limit groove 31.

In the present embodiment, the operation wrench 66 is provided on the front side of the fixing plate 62 in the seat 5, the operation wrench 66 is connected to the front side end of the slider 63 by the pull cord 67, and the rear side end of the slider 63 is connected to the fixing plate 62 by the second spring 68. When a user pulls the operation wrench 66, the pull rope 67 drives the sliding block 63 to move forwards and stretches the second spring 68, the inclined surface of the wedge-shaped block 631 avoids the moving route of the first roller 611, so that the elastic force of the first spring 65 can push the movable rod 61 to move in a direction away from the connecting column 3; when the user releases the operating spanner 66, the elastic force of the second spring 68 pulls the slider 63 to move backward, the inclined surface of the wedge 631 abuts against the first roller 611, and the first spring 65 is compressed, thereby pushing the movable rod 61 to move in a direction approaching the connection post 3.

In this embodiment, a cavity 621 for accommodating the slider 63 is disposed in the fixing plate 62, a second chute 622 is disposed at the top of the cavity 621, a bar-shaped hole 623 is disposed at the bottom of the cavity 621, a protrusion 632 matched with the second chute 622 is disposed at the top of the slider 63, a wedge-shaped block 631 penetrates through the bar-shaped hole 623, the length of the bar-shaped hole 623 is greater than that of the wedge-shaped block 631, a through hole 624 for communicating the cavity 621 with the outside is disposed on the fixing plate 62, and one end of a pull rope 67 penetrates through the through hole 624 and then is connected with the slider 63, see fig. 2, 5 and 6. In this application, a cavity 621 is provided in the fixing plate 62, and the slider 63 is provided in the cavity 621. A second sliding groove 622 is formed in the top of the cavity 621, a protruding portion 632 is formed in the top of the sliding block 63, and the sliding block 63 can move along the second sliding groove 622 in the cavity 621 through the protruding portion 632 being matched with the second sliding groove 622.

A bar hole 623 is provided at the bottom of the cavity 621, and a wedge 631 at the bottom of the slider 63 extends out of the cavity 621 through the bar hole 623, so that the first roller 611 between the fixing plate 62 and the guide plate 64 is in rolling engagement with the inclined surface of the wedge 631. Since the length of the bar hole 623 is greater than the length of the wedge 631, the bar hole 623 does not hinder the movement of the wedge 631 when the slider 63 moves along the second chute 622 in the cavity 621. The fixing plate 62 is further provided with a through hole 624, and the through hole 624 communicates the cavity 621 with the outside, so that the pull rope 67 can be connected with one side end of the sliding block 63 after penetrating through the through hole 624, and the sliding block 63 can be pulled by the pull rope 67 to move along the second sliding groove 622 in the cavity 621. It is envisioned that: the second spring 68 is also positioned in the cavity 621, and one end of the second spring 68 is connected to the slider 63, and the other end is connected to the inner wall of the cavity 621, so that the slider 63 can be pulled to move reversely along the second chute 622 in the cavity 621 by the elastic force of the second spring 68.

In this embodiment, the bottom of the seat 5 is provided with a rotating sleeve 52 sleeved on the connecting post 3, a first fan-shaped groove 521 is provided on the inner side of the rotating sleeve 52, a first fan-shaped protrusion 32 matched with the first fan-shaped groove 521 is provided on the connecting post 3, and the arc length of the first fan-shaped groove 521 is greater than that of the first fan-shaped protrusion 32, see fig. 2 and 4. In this application, the bottom of seat support 5 still is equipped with rotation sleeve 52, establishes with spliced pole 3 through rotation sleeve 52 cover, realizes the rotation of seat support 5 and spliced pole 3 and is connected. It is envisioned that: in practical implementation, the bottom of the seat 5 can be provided with a plurality of rotating sleeves 52, and the connecting columns 3 are sleeved with the rotating sleeves 52 at the same time, so that the seat 5 is more stable in connection with the connecting columns 3, and the seat is more stable in structure and stronger in bearing capacity. The particular number of rotatable sleeves 52 provided may depend on the actual production situation.

The inner ring of the rotating sleeve 52 is provided with a first fan-shaped groove 521, the outer wall of the connecting column 3 is provided with a first fan-shaped protrusion 32, and the seat 5 can be fixed at the axial position of the connecting column 3 by the cooperation of the first fan-shaped protrusion 32 and the first fan-shaped groove 521, so that the seat 5 cannot move transversely. Since the length of the first fan-shaped groove 521 is longer than the length of the first fan-shaped protrusion 32, the seat 5 can be rotated on the connection post 3 by a certain angle.

When the seat 5 is turned down from the horizontal state to the vertical state, the first fan-shaped protrusion 32 abuts against the rear side wall of the first fan-shaped groove 521; when the seat 5 is turned upwards from the vertical state to the horizontal state, the first fan-shaped protrusion 32 is abutted against the front side wall of the first fan-shaped groove 521, so that the first fan-shaped protrusion 32 is limited through the first fan-shaped groove 521, the rotation angle of the seat 5 is guided, and the structural stability of the seat 5 in the horizontal fixing state or the vertical fixing state is enhanced.

In this embodiment, the limiting groove 31 includes a flat groove 311 formed on the top of the connecting post 3, a folding groove 312 formed on the front side of the connecting post 3, and a guiding groove 313 connecting the flat groove 311 and the folding groove 312; when the movable rod 61 is disengaged from the flat groove 311, the movable rod can move to the folding groove 312 along the guide groove 313, and when the movable rod 61 is disengaged from the folding groove 312, the movable rod can move to the flat groove 311 along the guide groove 313, see fig. 7. In this application, the limiting groove 31 includes a flat groove 311, a folding groove 312 and a guiding groove 313, the flat groove 311 is arranged at the top of the connecting column 3, the folding groove 312 is arranged at the front side of the connecting column 3, and the guiding groove 313 connects the flat groove 311 with the folding groove 312.

When the seat is not needed to be used, a user pulls the operating wrench 66 to move forwards along the first sliding groove 51, the pull rope 67 pulls the sliding block 63 to move forwards on the fixed plate 62, the inclined surface of the wedge-shaped block 631 avoids the ascending route of the first roller 611, meanwhile, the sliding block 63 stretches the second spring 68, the movable rod 61 is pushed to ascend through the elastic force of the deformation of the first spring 65 until the bottom of the movable rod 61 is pulled out of the flat groove 311, then the operating wrench 66 is released, the bottom of the movable rod 61 moves to the folding groove 312 along the guide groove 313, meanwhile, the first fan-shaped protrusion 32 is abutted with the rear side wall of the first fan-shaped groove 521, and at the moment, the seat 5 is turned from a horizontal state to a vertical state.

And then the sliding block 63 is pulled to move upwards on the fixed plate 62 under the elastic action of the second spring 68, so that the inclined surface of the wedge-shaped block 631 extrudes the first roller 611, the movable rod 61 is pushed to move backwards, and meanwhile, the first spring 65 is compressed until the bottom of the movable rod 61 is inserted into the furling groove 312, so that the fixing of the seat 5 in the vertical state is realized, the occupation of the space by the seat is reduced, and the cleaning of a use scene by a user and the passing of the user from the middle of two adjacent rows of seats are facilitated.

When the seat needs to be used, a user pulls the operating wrench 66 to move downwards along the first sliding groove 51, the pull rope 67 pulls the sliding block 63 to move downwards on the fixed plate 62, the inclined surface of the wedge-shaped block 631 avoids the forward moving route of the first roller 611, meanwhile, the sliding block 63 stretches the second spring 68, the movable rod 61 is pushed to move forwards by the elastic force of the deformation of the first spring 65 until the bottom of the movable rod 61 is pulled out of the folding groove 312, then the operating wrench 66 is released, the bottom of the movable rod 61 moves to the flat groove 311 along the guide groove 313, meanwhile, the first fan-shaped protrusion 32 abuts against the front side wall of the first fan-shaped groove 521, and at the moment, the seat 5 is turned from a vertical state to a horizontal state.

The sliding block 63 is pulled to move backwards on the fixed plate 62 under the elastic action of the second spring 68, so that the inclined surface of the wedge-shaped block 631 presses the first roller 611 to push the movable rod 61 to move downwards, and meanwhile, the first spring 65 is compressed until the bottom of the movable rod 61 is inserted into the flat groove 311, and therefore the fixing of the seat 5 in the horizontal state is achieved, and a user can sit on the seat 5.

It is envisioned that: according to the above-mentioned steps of using the seat, when the seat is not needed, the user pulls the operation wrench 66 to draw the bottom of the movable rod 61 out of the flat groove 311, and then releases the operation wrench 66, and the bottom of the movable rod 61 abuts against the bottom of the guide groove 313 under the action of the elastic force of the second spring 68, which may cause the seat 5 to be locked in a position between the horizontal state and the vertical state, and not to be turned smoothly. In order to smoothly move the bottom of the movable rod 61 along the guide groove 313 to the folding groove 312, a user is required to apply pressure to the seat 5 to smoothly turn the seat 5 to a vertical state, which makes the use of the seat more troublesome and reduces the use experience of the user.

Therefore, in the present embodiment, the connection between the guide slot 313 and the flat slot 311 is provided with an arc-shaped turndown portion 314, the bottom of the movable rod 61 is provided with the second roller 612, and after the bottom of the movable rod 61 is pulled out from the flat slot 311, the second roller 612 can more smoothly transition from the top of the flat slot 311 to the guide slot 313 through the transition of the turndown portion 314, as shown in fig. 3 and 7. After the operation wrench 66 is released, the second roller 612 abuts against the bottom of the guide groove 313, so that sliding friction between the bottom of the movable rod 61 and the bottom of the guide groove 313 can be converted into rolling friction, and the bottom of the movable rod 61 can smoothly move to the folding groove 312 along the guide groove 313 under the action of gravity of the seat 5, so that a user does not need to apply pressure to the seat 5, the use of the seat is simpler and more convenient, and the use experience of the user is improved.

Further, the radius of the guiding groove 313 gradually decreases from the flat groove 311 to the folding groove 312, i.e. the angle between the tangent line of the guiding groove 313 and the horizontal direction gradually increases when the guiding groove 313 extends from the flat groove 311 to the folding groove 312, see fig. 7. When the second rolling is rolled down along the guide groove 313, the gradient gradually increases, so that the seat 5 is smoothly turned to be in a vertical state under the action of self gravity.

Because in this application, when seat support 5 is in the horizontal fixed state, support through spliced pole 3, consequently regard the axis of spliced pole 3 as the boundary, if seat support 5 is located the cross-sectional area of spliced pole 3 axis front side, be greater than the cross-sectional area that is located spliced pole 3 axis rear side, namely spliced pole 3 is back to the supporting position of seat, and the position that the user sat generally is close to the front side of seat support 5, when seat support 5 bears the great gravity of user this moment, can cause great pressure to the cooperation of movable rod 61 and jack-in groove, and the cooperation of first fan-shaped arch 32 and first fan-shaped recess 521, probably can cause the damage of above-mentioned part, thereby influence the life of seat.

Therefore, in this embodiment, the sectional area of the seat 5 located at the front side of the central axis of the connecting post 3 is smaller than the sectional area located at the rear side of the central axis of the connecting post 3, that is, the supporting position of the connecting post 3 on the seat is located at the front, so that when the user sits on the front side of the seat 5, the pressure caused by the cooperation of the movable rod 61 and the plugging slot and the cooperation of the first fan-shaped protrusion 32 and the first fan-shaped groove 521 is reduced, thereby improving the structural stability of the seat and prolonging the service life of the seat.

However, in the foregoing embodiment, when the seat 5 is turned from the horizontal state to the vertical state, the gravity of the portion of the seat 5 located at the front side of the central axis of the connecting post 3 is required to enable the seat 5 to be turned smoothly to the vertical state without external force. The sectional area of the seat 5 at the front side of the central axis of the connecting column 3 is smaller than the sectional area at the rear side of the central axis of the connecting column 3, so that the effect cannot be achieved. Therefore, in the application, the balancing weight can be arranged at the front side part of the central axis of the connecting column 3 of the seat 5, so that the supporting position of the connecting column 3 to the seat can be kept forward, and the gravity of the front side part of the central axis of the connecting column 3 of the seat 5 is larger than the gravity of the rear side part of the central axis of the connecting column 3 of the seat 5.

Also envisioned are: according to the above-mentioned use steps of seat, when the seat needs to be used, the user still needs to pull the operation wrench 66, draw out the bottom of the movable rod 61 from the horizontal groove 311, then loosen the operation wrench, and apply the acting force of lifting to the seat 5, so that the bottom of the movable rod 61 moves to the horizontal groove 311 along the guide groove 313, and because the operation wrench 66 is located at the lower side of the seat 5, the operation of pulling the wrench by the user is difficult, which also makes the use of the seat more troublesome, and reduces the use experience of the user.

In this embodiment, therefore, the connection between the guide slot 313 and the folding slot 312 is provided with an arc-shaped upturned portion 315, see fig. 7. Based on the above embodiments: the radius of the guide groove 313 gradually decreases from the flat groove 311 to the folding groove 312, so that the height difference between the bottom of the guide groove 313 and the bottom of the folding groove 312 is much smaller than the height difference between the bottom of the guide groove 313 and the bottom of the flat groove 311. When the second roller 612 at the bottom of the movable rod 61 is located in the folding groove 312, the second roller 612 cannot easily roll out due to the limit of the folding groove 312, so as to keep the seat 5 in a vertical fixed state.

However, when the user applies a lifting force to the seat, the height difference between the bottom of the guide groove 313 and the bottom of the folding groove 312 is small, and the connection part of the guide groove 313 and the folding groove 312 is transited through the upturning part 315, so that the second roller 612 can move into the guide groove 313 through the upturning part 315, and the user does not need to pull the operation wrench 66, so that the seat can be turned upwards, the use of the seat is simpler and more convenient, and the use experience of the user is further improved. It is envisioned that: a buffer spring is provided between the second roller 612 and the bottom of the movable rod 61, and the second roller 612 can be moved in a small range without moving the movable rod 61, so that the operation of the second roller 612 to move into the guide groove 313 directly through the upturned portion 315 is more easily achieved.

In this embodiment, the supporting leg 1 includes a fixing leg 11 disposed on the inner side and a rotating leg 12 disposed on the outer side, wherein the fixing leg 11 is fixedly connected with one end of the connecting post 3, the rotating leg 12 can rotate on the fixing leg 11 by a certain angle, and the armrest 2 is rotatably connected to the top of the rotating leg 12, see fig. 8. In this application, landing leg 1 includes fixed stabilizer blade 11 and rotates stabilizer blade 12, and fixed stabilizer blade 11 sets up inboard, rotates stabilizer blade 12 setting in the outside, through fixed stabilizer blade 11 and spliced pole 3 one end fixed connection, realizes the fixed connection of stabilizer blade and spliced pole 3.

The rotating leg 12 can be rotated on the fixed leg 11 by a certain angle so that the legs of the seat can be folded or unfolded. When the seat needs to be used, the rotary support legs 12 rotate on the fixed support legs 11 by a certain angle to open the support legs, so that the seat is supported by the support legs abutting against the ground; when the seat is not needed to be used, the rotary support legs 12 are reversely rotated on the fixed support legs 11 by a certain angle, so that the support legs are folded, and the occupation of the seat to the space is further reduced.

Specifically, a second fan-shaped groove 121 may be disposed on the inner side of the rotating leg 12, a second fan-shaped protrusion 111 is disposed on the outer side of the fixed leg 11, and the arc length of the second fan-shaped groove 121 is greater than that of the second fan-shaped protrusion 111, as shown in fig. 9 and 10, so that the rotating leg 12 rotates forward or backward on the fixed leg 11 by a certain angle through the cooperation of the second fan-shaped protrusion 111 and the second fan-shaped groove 121. Because the seat is when using, fixed stabilizer blade 11 and rotation stabilizer blade 12 all with ground butt, when the user sits on the seat, rotation stabilizer blade 12 can not carry out reverse rotation on fixed stabilizer blade 11 to prevent that the seat from when using, rotation stabilizer blade 12 carries out reverse rotation on fixed stabilizer blade 11, leads to the stabilizer blade to draw in, influences the stability of seat. In practical implementation, universal wheels can be arranged at the bottoms of the rotary support legs 12 and the fixed support legs 11, and the movement of the seat can be realized through the universal wheels, so that the seat is more convenient to use and carry.

In the application, the armrest 2 is arranged at the top of the rotary support leg 12, and the armrest 2 is rotationally connected with the rotary support leg 12, so when the seat needs to be used, the rotary support leg 12 can be rotated on the fixed support leg 11 for a certain angle, the support leg is opened, and then the armrest 2 is turned over on the rotary support leg 12 to be in a horizontal state, so that the armrest 2 supports both hands of a user; when the seat needs to be used, the rotary support legs 12 can be reversely rotated on the fixed support legs 11 for a certain angle, so that the support legs are folded, and then the armrest 2 is turned over to be in a vertical state on the rotary support legs 12, so that the occupation of the seat to the space is further reduced.

Specifically, a rotating groove 122 may be formed at the top of the rotating leg 12, and rotating holes 1221 are formed on two opposite sidewalls of the rotating groove 122, and rotating shafts 21 are formed on two sides of the handrail 2, as shown in fig. 10. The rotating shafts 21 on the two sides of the handrail 2 are respectively connected with the rotating holes 1221 on the two opposite side walls of the rotating groove 122 in a rotating way, so that the handrail 2 can be overturned at the top of the rotating support leg 12. It is envisioned that: when the armrest 2 is turned to the horizontal state, the bottom of the rotating groove 122 is abutted against the bottom of the armrest 2, so that the armrest 2 is kept in the horizontal state, and the hands of a user are supported conveniently; when the armrest 2 is turned to the vertical state, the side wall of the rotation groove 122 abuts against the top of the armrest 2, so that the armrest 2 is kept in the vertical state, and the occupation of the space by the seat is further reduced.

In the present embodiment, the rear side of the connection post 3 is provided with a mounting plate 33 for mounting the backrest 4, and a reinforcing plate 34 for connecting the mounting plate 33 and the connection post 3, see fig. 4. In this application, the rear side of spliced pole 3 is equipped with mounting panel 33, through with back 4 fixed mounting at mounting panel 33, can realize that back 4 is fixed at spliced pole 3 rear side to make the user sit on seat 5 when, back 4 can support user's back. Since a large force is applied to the backrest 4 when the back of the user leans against the backrest 4, in this application, the reinforcing rib 34 is further provided on the rear side of the connecting post 3, and the mounting plate 33 is connected to the connecting post 3 via the reinforcing rib 34, thereby reinforcing the structural strength of the seat. It is envisioned that: the mounting plate 33 extends on the rear side of the connection post 3, and the backrest 4 is not on the path of the seat 5 turning over when fixedly mounted on the mounting plate 33, thereby preventing the backrest 4 from obstructing the turning over of the seat 5 on the connection post 3.

The above description may be implemented alone or in various combinations and these modifications are within the scope of the present invention.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (13)

1. A flip fold seat, characterized in that: the chair comprises supporting legs (1) arranged on two sides, two armrests (2) respectively arranged on the tops of the two supporting legs (1), a connecting column (3) connected with the two supporting legs (1), a backrest (4) fixedly arranged on the rear side of the connecting column (3), and a seat (5) rotationally connected with the connecting column (3); be equipped with spacing groove (31) on spliced pole (3), be equipped with on chair seat (5) can with spacing groove (31) cooperation or break away from cooperation upset adjusting device (6), upset adjusting device (6) with spacing groove (31) cooperation can restrict chair seat (5) are in rotation on spliced pole (3), upset adjusting device (6) with spacing groove (31) break away from the cooperation, can make chair seat (5) are in rotate on spliced pole (3).

2. A roll-over seat as set forth in claim 1, wherein: the overturning adjusting device (6) comprises a movable rod (61) arranged at the bottom of the chair seat (5) and capable of moving towards the direction close to or away from the connecting column (3), and a driving assembly arranged at the bottom of the chair seat (5) and used for driving the movable rod (61) to move, wherein the movable rod (61) is matched with the limiting groove (31) in the process of moving towards the direction close to the connecting column (3), and the movable rod (61) is separated from the limiting groove (31) in the process of moving towards the direction away from the connecting column (3).

3. A roll-over seat as set forth in claim 2, wherein: the driving assembly comprises a fixed plate (62) fixedly arranged at the bottom of the seat (5), and a sliding block (63) slidably connected with the fixed plate (62), a wedge block (631) is arranged at the bottom of the sliding block (63), and a first roller (611) in rolling connection with the wedge block (631) is arranged at the top of the movable rod (61).

4. A roll-over folding seat as recited in claim 3, wherein: the driving assembly further comprises a guide plate (64) fixedly mounted at the bottom of the seat (5), a first spring (65) with one end connected with the guide plate (64) and the other end connected with the movable rod (61), a guide hole for the movable rod (61) to penetrate through is formed in the guide plate (64), the guide plate (64) is arranged between the fixed plate (62) and the connecting column (3), and the first spring (65) is arranged between the guide plate (64) and the fixed plate (62).

5. A roll-over folding seat as recited in claim 3, wherein: the driving assembly further comprises a first sliding groove (51) arranged at the bottom of the seat (5), an operating spanner (66) slidably connected with the first sliding groove (51), a pull rope (67) with one end connected with the operating spanner (66) and the other end connected with the sliding block (63), and a second spring (68) with one end connected with the sliding block (63) and the other end connected with the fixed plate (62), wherein the pull rope (67) and the second spring (68) are respectively connected with two opposite side ends of the sliding block (63).

6. A roll-over seat as set forth in claim 5, wherein: be equipped with in fixed plate (62) and be used for holding cavity (621) of slider (63), cavity (621) top is equipped with second spout (622), bottom are equipped with bar hole (623), slider (63) top be equipped with second spout (622) complex bellying (632), wedge (631) run through bar hole (623), the length of bar hole (623) is greater than the length of wedge (631), be equipped with on fixed plate (62) will cavity (621) and external intercommunication through-hole (624), stay cord (67) one end run through behind through-hole (624) with slider (63) are connected.

7. A roll-over seat as set forth in claim 1, wherein: the novel chair comprises a seat (5), and is characterized in that a rotating sleeve (52) sleeved on a connecting column (3) is arranged at the bottom of the seat (5), a first fan-shaped groove (521) is formed in the inner side of the rotating sleeve (52), a first fan-shaped protrusion (32) matched with the first fan-shaped groove (521) is arranged on the connecting column (3), and the arc length of the first fan-shaped groove (521) is larger than that of the first fan-shaped protrusion (32).

8. A roll-over seat as set forth in claim 2, wherein: the limiting groove (31) comprises a flat groove (311) arranged at the top of the connecting column (3), a furling groove (312) arranged at the front side of the connecting column (3), and a guide groove (313) for connecting the flat groove (311) and the furling groove (312); when the movable rod (61) is out of engagement with the flat-laying groove (311), the movable rod can move to the folding groove (312) along the guide groove (313), and when the movable rod (61) is out of engagement with the folding groove (312), the movable rod can move to the flat-laying groove (311) along the guide groove (313).

9. A roll-over seat as set forth in claim 8, wherein: the guide slot (313) with the junction of keeping flat groove (311) is equipped with down turn over portion (314), guide slot (313) with the junction of drawing in groove (312) is equipped with turns over portion (315), movable rod (61) bottom is equipped with second gyro wheel (612), turn over portion (314) down is used for making second gyro wheel (612) follow keep flat groove (311) top transition extremely guide slot (313), turn over portion (315) up is used for making second gyro wheel (612) follow draw in groove (312) bottom transition extremely guide slot (313).

10. A roll-over seat as set forth in claim 1, wherein: the landing leg (1) is including locating inboard fixed stabilizer blade (11) to and locate rotation stabilizer blade (12) in the outside, fixed stabilizer blade (11) with spliced pole (3) one end fixed connection, rotation stabilizer blade (12) can be in rotate certain angle on fixed stabilizer blade (11), handrail (2) rotate connect in the top of rotation stabilizer blade (12).

11. A roll-over seat as set forth in claim 10, wherein: the inner side of the rotary support leg (12) is provided with a second fan-shaped groove (121), the outer side of the fixed support leg (11) is provided with a second fan-shaped protrusion (111) matched with the second fan-shaped groove (121), and the arc length of the second fan-shaped groove (121) is larger than that of the second fan-shaped protrusion (111).

12. A roll-over seat as set forth in claim 10, wherein: the top of the rotating support leg (12) is provided with a rotating groove (122), two opposite side walls of the rotating groove (122) are provided with rotating holes (1221), and two sides of the handrail (2) are provided with rotating shafts (21) which are respectively connected with the two rotating holes (1221) in a rotating mode.

13. A roll-over seat as set forth in claim 1, wherein: the rear side of the connecting column (3) is provided with a mounting plate (33) for mounting the backrest (4), and a reinforcing rib plate (34) for connecting the mounting plate (33) with the connecting column (3).