CN115316814A - Folding dining chair - Google Patents

Abstract

The invention discloses a folding dining chair, which comprises a folding bracket and a folding seat, wherein the folding seat comprises a seat board, a backrest and armrests, and the seat board is provided with a rear rotating joint and a front rotating joint, and is characterized in that: an arc-shaped rod is arranged between the backrest and the handrail in a sliding mode, a locking bar is arranged in the front rotating joint in a sliding mode, the locking bar is in an initial state and is in a state of locking the front rotating joint, a push rod is arranged on the side wall of the seat plate in a sliding mode, the front end of the push rod forms an inclined plane for pushing the locking bar to unlock in a sliding mode, and an arc-shaped portion for pushing the push rod to slide is formed on the outer side wall of the backrest rotating piece. The invention provides a folding dining chair which not only can adjust the angle of a backrest, but also can realize linkage folding between the backrest and armrests, realizes folding with smaller volume and further reduces the occupied space of the folding dining chair.

Description

Folding dining chair

Technical Field

The invention relates to a folding dining chair.

Background

Child dining chairs are designed to provide a seating position for an infant, toddler, or child. Typically, a child dining chair includes a tray or similar device that can be removably coupled to the child dining chair and can be used as a place for the child to place food and/or beverages.

While child dinning chairs provide significant benefits when in use, they can take up a significant amount of space. As such, parents and caregivers may often wish to remove from the kitchen or other area where the child's dining chair is used. It is possible to simply store the child's dining chair in the unfolded in-use configuration, but this would result in a large storage area. A child dining chair that is foldable such that it takes up less space than when the chair is in the unfolded in-use configuration will allow a user to use less space and/or have more space to store the child dining chair.

For example, the present chinese utility model with publication number CN211380487U discloses a "dining chair", which includes a bracket and a seat assembly slidably disposed on the bracket, the seat assembly includes a seat plate and a backrest rotatably connected to the seat plate, and is characterized in that the seat assembly is provided with an angle adjusting mechanism for adjusting an angle between the backrest and the seat plate, a height adjusting mechanism for adjusting a relative distance between the seat assembly and the bracket, and an operating mechanism for operating the height adjusting mechanism and the angle adjusting mechanism, the dining chair includes a height adjusting state and an angle adjusting state, and when the dining chair is in the height adjusting state, the operating mechanism drives the height adjusting mechanism to move; when the dining chair is in the angle adjusting state, the operating mechanism drives the angle adjusting mechanism to move.

For another example, the chinese utility model with publication number CN201542160U discloses a folding dining chair for children with unfolding position and folding position, which comprises a dining chair frame, a seat mechanism installed on the dining chair frame, a dining chair locking mechanism for locking the folding dining chair for children at unfolding position, and is characterized in that: the dining chair frame comprises a front bracket (1); the upper part of the front bracket (1) is rotationally connected with the upper part of the rear bracket (2); the seat mechanism comprises a sliding support (9), the sliding support (9) is arranged on the front support (1) in a sliding manner along the length direction of the front support (1), and a height adjusting and locking mechanism is arranged between the sliding support (9) and the front support (1); the lower part of the backrest frame (3) is rotationally connected with the sliding bracket (9); the back part of the armrest frame (4) and the backrest frame (3) rotate and slide along the front-back direction of the armrest frame (4); the upper end part of the front support (7) is rotationally connected with the front part of the armrest frame (4), the lower end part of the front support (7) is rotationally connected with the sliding bracket (9), and the rotational connection part of the front support (7) and the sliding bracket (9) is positioned below the rotational connection part of the backrest frame (3) and the sliding bracket (9); the seat frame (5) is arranged below the armrest frame (4), the rear end part of the seat frame (5) is rotationally connected with the backrest frame (3), and the front part of the seat frame (5) is rotationally connected with the front support (7).

However, existing folding dining chair back and arm rests are fixed to the chair; or the backrest and the armrests are arranged on the seat in a relatively independent rotating mode, however, the backrest and the armrests are not in linkage relation, after the folding is finished, the backrest and the armrests are mutually overlapped, and the volume of the folded dining chair is relatively large.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art, and provides a folding dining chair which not only can adjust the angle of a backrest, but also can realize linkage folding between the backrest and armrests, realizes folding with smaller volume, and further reduces the occupied space of the folding dining chair.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a folding dining chair, includes folding support and folding seat chair, and folding seat chair includes bedplate, back and handrail, is provided with back rotation joint at the bedplate rear side, is provided with preceding rotation joint in the front side of bedplate, and back and folding support set up on back rotation joint, and the handrail sets up on preceding rotation joint, and back rotation joint internal rotation is provided with the back rotation piece of being connected with the back, is provided with restriction back pivoted locking piece on the back, its characterized in that: be provided with the arc pole between back and the handrail, the one end of arc pole articulates on the back, the other end of arc pole slides and sets up in the handrail, be provided with in the back and be used for carrying out the tapered end that locks each other handrail and arc pole, be provided with at the back and be used for carrying out the unblock spanner of unblock to tapered end and locking piece simultaneously, it is provided with the locking bar to slide in the front revolute joint, locking bar initial state is in the state that locks to preceding revolute joint, it is provided with the push rod to slide at the lateral wall of bedplate, the front end of push rod forms the inclined plane that promotes the sliding unblock of locking bar, it promotes the gliding arc portion of push rod to be formed with on the back rotates the lateral wall.

As the improvement, the back rotates the joint and includes the first bedplate portion of being connected with the bedplate, with folding leg joint's support portion, the back rotates the piece and rotates and set up between first bedplate portion and support portion, is provided with the lock sleeve that is used for locking first bedplate portion and support portion in the back rotates the piece, is formed with on the lock sleeve and promotes the inclined plane, and the back rotates the piece and rotates the in-process and act on promoting the inclined plane and make the lock sleeve axial slip unblock.

The improved structure is characterized in that the front rotary joint comprises a second seat plate part connected with the seat plate and a cover part sleeved outside the second seat plate part, the lock bar is arranged in the second seat plate part in a sliding mode, a branch pipe is arranged on the cover part, the upper end of the branch pipe is rotatably arranged in the handrail, the lower end of the branch pipe is rotatably arranged on the cover part, a reset rod is arranged in the branch pipe, the lower end of the reset rod acts on the lock bar, and a reset spring is arranged at the upper end of the reset rod.

And the foldable support comprises a front support and a rear support, the top of the rear support is rotatably arranged at the top of the front support, a support part is arranged at the top of the front support, a U-shaped rod is arranged between the front support and the rear support, two outer ends of the U-shaped rod are respectively hinged on the corresponding front supports, a sliding block is arranged at the rear part of the U-shaped rod, the sliding block is slidably arranged on the side wall of the rear support, a lock pin is arranged in the sliding block, an upper lock hole and a lower lock hole are arranged on the rear support, and an unlocking wrench for controlling unlocking of the lock pin is arranged at the rear end of the U-shaped rod.

The improved foldable seat is characterized in that the height position of the foldable seat on the front support is adjustable, a shifting rod is arranged in the support part in a rotating mode, a locking block is arranged in the support part at the lower end of the shifting rod in a sliding mode, a plurality of locking grooves used for inserting the locking block are formed in the side wall of the front support at intervals, a rear twisting handle is arranged at the bottom of the seat plate and is in transmission connection with a linkage rod, and the outer end of the linkage rod acts on the upper end of the shifting rod.

And the improved structure is characterized in that a dinner plate is arranged on the armrest, and the front and back positions of the armrest on the dinner plate are adjustable.

And the outer side wall of the first base plate part is provided with a plurality of gear grooves, and the locking block and the gear grooves are oppositely arranged.

In the improvement, the front part of the seat board is provided with a pedal.

And the improvement is that a yielding groove is formed on the inner side wall of the arc-shaped rod, and a yielding gap exists between the rear side groove wall of the yielding groove and the end surface of the handrail.

Compared with the prior art, the invention has the advantages that: when the backrest angle needs to be folded and adjusted, the unlocking wrench is pressed, the locking block and the lock head are simultaneously unlocked by the unlocking wrench, after unlocking, the backrest can rotate around the rear rotating joint, meanwhile, the backrest can also push the arc-shaped rod to slide in the handrail, at the moment, if the backrest angle needs to be adjusted, the backrest is rotated outwards, after the backrest inclines to a specific gear, the unlocking wrench is loosened, and the locking block and the lock head are simultaneously locked; in addition, when the dining chair is folded, in the process of inwards rotating the backrest, after the backrest rotates to a certain degree, the arc-shaped part on the backrest rotating part acts on the push rod, the inclined plane on the push rod pushes the locking strip, the locking strip moves, the front rotating joint is unlocked, so that the armrest can rotate around the front rotating joint, and thus, the front rotating joint and the rear rotating joint synchronously rotate to realize linkage folding between the backrest and the armrest, so that folding with smaller volume can be realized, and the occupied space of the folded dining chair is further reduced.

Drawings

FIG. 1 is a schematic view of a folding dining chair according to an embodiment of the present invention;

FIG. 2 is a schematic view of the backrest adjustment of FIG. 1;

FIG. 3 is a schematic view of the folded dining chair of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 in another orientation;

figure 5 shows a cross-sectional view of the folding dining chair of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

figure 7 shows an exploded view of the folding dining chair according to the embodiment of the present invention;

fig. 8 is a partial enlarged view at B in fig. 7;

fig. 9 is a schematic view of the structure of fig. 7 in another direction.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 9, the folding dining chair of the present embodiment includes a folding bracket and a folding seat.

The foldable seat comprises a seat board 2, a backrest 3 and handrails 4, a rear rotating joint 7 is arranged on the rear side of the seat board 2, a front rotating joint 5 is arranged on the front side of the seat board 2, the backrest 3 and a foldable support are arranged on the rear rotating joint 7, the handrails 4 are arranged on the front rotating joint 5, a backrest rotating part 71 connected with the backrest 3 is rotationally arranged in the rear rotating joint 7, a locking block 32 for limiting rotation of the backrest 3 is arranged on the backrest 3, an arc-shaped rod 6 is arranged between the backrest 3 and the handrail 4, one end of the arc-shaped rod 6 is hinged to the backrest 3, the other end of the arc-shaped rod 6 is slidably arranged in the handrail 4, a locking head 31 for locking the armrest 4 and the arc-shaped rod 6 mutually is arranged in the backrest 3, an unlocking wrench 33 for unlocking the locking head rotating part 31 and the locking block 32 simultaneously is arranged on the back of the backrest 3, a locking bar 53 is slidably arranged in the front rotating joint 5, the initial state of the locking bar 53 is in the state of locking the front rotating joint 5, a push rod 8 is slidably arranged on the side wall of the seat board 2, and a push slope 711 is formed on the sliding part of the front rotating part of the backrest. Meanwhile, a yielding groove is formed in the inner side wall of the arc-shaped rod 6, and a yielding gap exists between the rear side groove wall of the yielding groove and the end surface of the handrail 4.

Further, in the embodiment of the present invention, the rear rotary joint 7 includes a first seat plate portion 74 connected to the seat plate 2, and a bracket portion 72 connected to the folding bracket, the backrest rotary member 71 is rotatably disposed between the first seat plate portion 74 and the bracket portion 73, a lock sleeve 73 for locking the first seat plate portion 74 and the bracket portion 72 is disposed in the backrest rotary member 71, a pushing inclined surface is formed on the lock sleeve 73, and the backrest rotary member 71 acts on the pushing inclined surface during rotation to axially slide and unlock the lock sleeve. During the rotation of the rear rotary joint 7, the backrest rotating member 71 can push the lock sleeve 73 to move, so that the seat plate 2 and the folding bracket can rotate relatively. Meanwhile, a plurality of gear grooves 741 are formed in the outer side wall of the first seat plate 74, the locking piece 32 and the gear grooves 741 are arranged oppositely, and by providing the plurality of gear grooves 741, the locking piece 32 is located in different gear grooves 741, and the backrest 3 can be adjusted to different angles.

The front rotary joint 5 comprises a second seat plate part 51 connected with the seat plate 2 and a cover part 52 sleeved outside the second seat plate part 51, a locking bar 53 is arranged in the second seat plate part 51 in a sliding mode, a branch pipe 54 is arranged on the cover part 52, the upper end of the branch pipe 54 is arranged in the armrest 4 in a rotating mode, the lower end of the branch pipe 54 is arranged on the cover part 52 in a rotating mode, a reset rod 541 is arranged in the branch pipe 54, the lower end of the reset rod 541 acts on the locking bar 53, and the upper end of the reset rod 541 is provided with a reset spring. When the dining chair is in an open state, the reset rod 54 acts on the lock bar 53 under the action of the reset spring 541, the lock bar 53 is just clamped between the second seat plate part 51 and the cover part 52, so that the front rotary joint 5 cannot rotate, only when the push rod 8 pushes forwards, the lock bar 53 moves under the action of the inclined plane at the front end of the push rod 8, the lock bar 53 is completely hidden in the second seat plate part 51 and does not act on the cover part 52, and at this time, the front rotary joint 5 can unlock and rotate.

In addition, the folding bracket comprises a front bracket 11 and a rear bracket 12, the top of the rear bracket 12 is rotatably arranged at the top of the front bracket 11, a bracket part 72 is arranged at the top of the front bracket 11, a U-shaped rod 13 is arranged between the front bracket 11 and the rear bracket 12, two outer ends of the U-shaped rod 13 are respectively hinged on the corresponding front brackets 11, a sliding block 131 is arranged at the rear part of the U-shaped rod 13, the sliding block 131 is arranged on the side wall of the rear bracket 12 in a sliding manner, a lock pin is arranged in the sliding block 131, an upper lock hole 121 and a lower lock hole 122 are arranged on the rear bracket 12, and an unlocking screw 132 for controlling the unlocking of the lock pin is arranged at the rear end of the U-shaped rod 13. When the dining chair is in an open state, the lock pin in the sliding block 131 is clamped into the lower lock hole 122, and the U-shaped rod 13 is supported between the front support 11 and the rear support 12 and is used for stabilizing the folding support; when the folding bracket needs to be folded, the unlocking handle 132 is pressed, the lock pin is pulled out of the lower lock hole 122, at this time, the slider 131 at the rear part of the U-shaped rod 13 slides upwards along the rear bracket 12, the front part of the U-shaped rod 13 rotates around the bottom of the front bracket 11, meanwhile, the rear bracket 12 is folded towards the front bracket 11, and when the slider 131 at the rear part of the U-shaped rod 13 moves to the upper lock hole 121, the lock pin is clamped into the upper lock hole 121.

In addition, the height position of the folding seat on the front support 11 is adjustable, the shifting rod 91 is rotationally arranged in the support part 72, the lower end of the shifting rod 91 in the support part 72 is provided with the locking block 9 in a sliding manner, a plurality of locking grooves 111 used for inserting the locking block 9 are arranged on the side wall of the front support 11 at intervals, the bottom of the seat plate 2 is provided with a rear screwing hand, the rear screwing hand is in transmission connection with a linkage rod, and the outer end of the linkage rod acts on the upper end of the shifting rod 91. When the height of the seat plate 2 needs to be adjusted, a back handle is screwed backwards at the bottom of the seat plate 2, the linkage rod pushes the upper end of the shifting rod 91 to rotate outwards, the shifting rod 91 pulls the locking block 9 outwards, the locking block 9 leaves the locking groove 111 of the front support 11, the seat plate 2 can move up and down on the front support 11, after the back position is determined, the back handle is loosened, the locking block 9 is clamped into the locking groove 111 of the front support 11 again, and locking between the seat plate 2 and the front support 11 is achieved.

Finally, in the embodiment of the present invention, the dinner plate 41 is disposed on the armrest 4, and the front and back positions of the armrest 4 on the dinner plate 41 are adjustable. Meanwhile, a pedal 21 is provided at the front of the seat plate 2.

In conclusion, when the angle of the backrest 3 needs to be folded and adjusted, the unlocking wrench 33 is pressed, the unlocking wrench 33 simultaneously unlocks the locking block 32 and the locking head 31, after unlocking, the backrest 3 can rotate around the rear rotating joint 7, meanwhile, the backrest 3 can also push the arc-shaped rod 6 to slide in the armrest 4, at this time, if the angle of the backrest 3 needs to be adjusted, the backrest 3 is rotated outwards, after the backrest 3 tilts to a specific gear, the unlocking wrench 33 is loosened, and the locking block 32 and the locking head 31 are simultaneously locked; in addition, when the dining chair is folded, in the process of inward rotating the backrest 3, after the backrest 3 rotates to a certain degree, the arc part 711 on the backrest rotating part 71 acts on the push rod 8, the inclined plane on the push rod 8 pushes the locking bar 53, the locking bar 53 moves, the front rotating joint 5 is unlocked, so that the armrest 4 can rotate around the front rotating joint 5, thus, the front rotating joint 5 and the rear rotating joint 7 synchronously rotate, the linkage folding between the backrest 3 and the armrest 4 is realized, the folding with smaller volume can be realized, and the occupied space of the folded dining chair is further reduced.

Claims (9)

1. The utility model provides a folding dining chair, including folding support and folding seat chair, folding seat chair includes bedplate (2), back (3) and handrail (4), it rotates joint (7) to be provided with back at bedplate (2) rear side, the front side at bedplate (2) is provided with preceding rotation joint (5), back (3) and folding support set up on back rotation joint (7), handrail (4) set up on preceding rotation joint (5), back rotation joint (7) internal rotation is provided with the back rotation piece (71) of being connected with back (3), be provided with on back (3) and restrict back (3) pivoted locking piece (32), its characterized in that: be provided with arc pole (6) between back (3) and handrail (4), the one end of arc pole (6) articulates on back (3), the other end of arc pole (6) slides and sets up in handrail (4), be provided with in back (3) and be used for carrying out locking tapered end (31) each other with arc pole (6) to handrail (4), be provided with in back (3) and be used for carrying out unblock spanner (33) of unblock to tapered end (31) and locking piece (32) simultaneously, it is provided with locking strip (53) to slide in preceding revolute joint (5), locking strip (53) initial state is in the state of locking preceding revolute joint (5), the lateral wall of seat (2) slides and is provided with push rod (8), the front end of push rod (8) forms the inclined plane that promotes locking strip (53) slip unblock, be formed with on back revolute piece (71) lateral wall and promote the gliding arc portion (711) of push rod (8).

2. A folding dining chair according to claim 1, wherein: the rear rotating joint (7) comprises a first seat plate portion (74) connected with the seat plate (2) and a support portion (72) connected with a folding support, a backrest rotating member (71) is rotatably arranged between the first seat plate portion (74) and the support portion (72), a lock sleeve (73) used for locking the first seat plate portion (74) and the support portion (72) is arranged in the backrest rotating member (71), a pushing inclined plane is formed on the lock sleeve (73), and the backrest rotating member (71) acts on the pushing inclined plane in the rotating process to axially slide and unlock the lock sleeve (73).

3. A folding dining chair according to claim 1, wherein: the front rotary joint (5) comprises a second seat plate part (51) connected with the seat plate (2) and a cover part (52) sleeved outside the second seat plate part (51), a locking bar (53) is arranged in the second seat plate part (51) in a sliding mode, a branch pipe (54) is arranged on the cover part (52), the upper end of the branch pipe (54) is arranged in the handrail (4) in a rotating mode, the lower end of the branch pipe (54) is arranged on the cover part (52) in a rotating mode, a reset rod (541) is arranged in the branch pipe (54), the lower end of the reset rod (541) acts on the locking bar (53), and a reset spring is arranged at the upper end of the reset rod (541).

4. A folding dining chair according to claim 2, wherein: the foldable support comprises a front support (11) and a rear support (12), the top of the rear support (12) is rotatably arranged at the top of the front support (11), a support part (72) is arranged at the top of the front support (11), a U-shaped rod (13) is arranged between the front support (11) and the rear support (12), two outer ends of the U-shaped rod (13) are respectively hinged to the corresponding front support (11), a sliding block (131) is arranged at the rear part of the U-shaped rod (13), the sliding block (131) is slidably arranged on the side wall of the rear support (12), a lock pin is arranged in the sliding block (131), an upper lock hole (121) and a lower lock hole (122) are arranged on the rear support (12), and an unlocking twisting hand (132) for controlling the lock pin to be unlocked is arranged at the rear end of the U-shaped rod (13).

5. A folding dining chair according to claim 4, wherein: the height position of the folding seat on the front support (11) is adjustable, a shifting rod (91) is arranged in the support part (72) in a rotating mode, a locking block (9) is arranged at the lower end, located on the shifting rod (91), in the support part (72) in a sliding mode, a plurality of locking grooves (111) used for inserting the locking block (9) are formed in the side wall of the front support (11) at intervals, a rear twisting handle is arranged at the bottom of the seat plate (2) and is in transmission connection with a linkage rod, and the outer end of the linkage rod acts on the upper end of the shifting rod (91).

6. A folding dining chair according to claim 1, wherein: a dinner plate (41) is arranged on the armrest (4), and the front and back positions of the dinner plate (41) on the armrest can be adjusted.

7. A folding dining chair according to claim 2, wherein: a plurality of gear grooves (741) are formed in the outer side wall of the first seat plate portion (74), and the locking piece (32) and the gear grooves (741) are arranged oppositely.

8. A folding dining chair according to claim 1, wherein: the front part of the seat board (2) is provided with a pedal (21).

9. A folding dining chair according to claim 1, wherein: be formed with the groove of stepping down on the inside wall of arc pole (6), there is the clearance of stepping down between the rear side cell wall in the groove of stepping down and handrail (4) terminal surface.

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