CN219289096U

CN219289096U - Locking mechanism of folding chair

Info

Publication number: CN219289096U
Application number: CN202223388565.0U
Authority: CN
Inventors: 张磊; 黄勇; 曹中成; 沈斌
Original assignee: Anhui Coolbaby Science & Technology Development Corp
Current assignee: Anhui Coolbaby Science & Technology Development Corp
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-07-04
Anticipated expiration: 2032-12-13

Abstract

The utility model discloses a locking mechanism of a folding chair, which relates to the technical field of folding chairs and comprises a first mounting plate and a second mounting plate, wherein the first mounting plate and the second mounting plate are rotationally connected with a connecting rod; according to the utility model, the locking wheel is driven by the fixing spring to be gradually clamped with the plurality of inclined clamping blocks along the plurality of inclined grooves, the locking wheel is clamped with the plurality of inclined clamping blocks, meanwhile, the clamping gear is clamped into the gear groove under the action of the fixing spring, and meanwhile, the other side of the clamping gear is clamped and fixed with the rotating groove, so that the connecting rod is fixed with the first swing arm, and meanwhile, the second swing arm is fixed with the connecting rod.

Description

Locking mechanism of folding chair

Technical Field

The utility model relates to the technical field of folding chairs, in particular to a locking mechanism of a folding chair.

Background

An existing folding chair is disclosed as a baby chair with lifting folding function in patent grant number CN217243474U, and the arm joint gear and the foot gear are pushed inwards to move through an upper joint cover and a lower joint cover, so that the rotation restriction of the arm joint gear and the foot gear on an upper folding group and a lower folding group is released respectively, the baby chair can complete folding operation, and occupied space is reduced; namely, the movement restriction at the joint is released by rotation;

in the above application document, in a daily state, the chair needs to be clamped and fixed, so that the chair is prevented from shrinking, and if the clamping piece of the chair joint is touched by mistake, the chair is easy to fold, so that the situation that the chair is contained is caused; meanwhile, in the process of accommodating the chair, all joints of the folding chair are required to be adjusted, so that the folding chair is low in accommodating efficiency, and the folding chair is inconvenient to rapidly accommodate and use. To this end we provide a locking mechanism for a folding chair.

Disclosure of Invention

The utility model aims to provide a locking mechanism of a folding chair.

The technical problems solved by the utility model are as follows: in a daily state, the chair needs to be clamped and fixed, so that the chair is prevented from shrinking, and if the clamping piece of the chair joint is touched by mistake, the chair is easy to fold, so that the situation that the chair is contained is caused; meanwhile, in the process of accommodating the chair, all joints of the folding chair are required to be adjusted, so that the folding chair is low in accommodating efficiency, and the problem of inconvenient rapid accommodating and use of the folding chair is solved.

The utility model can be realized by the following technical scheme: the locking mechanism of the folding chair comprises a first mounting plate and a second mounting plate, wherein the first mounting plate and the second mounting plate are rotationally connected with a connecting rod, one end, close to the second mounting plate, of the connecting rod is rotationally connected with a first swing arm, the first swing arm is connected with the second mounting plate, one end, far away from the first swing arm, of the connecting rod is rotationally connected with a second swing arm, a bottom supporting frame is arranged on the second swing arm, and locking mechanisms are arranged on the first swing arm and the second swing arm;

the locking mechanism comprises a locking wheel, gear grooves are formed in two ends of the connecting rod, a plurality of oblique clamping blocks are arranged in the gear grooves along the axes of the gear grooves, a plurality of oblique grooves matched with the oblique clamping blocks are formed in the locking wheel, clamping gears are arranged in the gear grooves, and rotating grooves corresponding to the gear grooves are formed in the first swing arm and the second swing arm.

The utility model further technically improves that: the locking mechanism further comprises a fixing rod, the fixing rod is arranged on the rotating groove and axially arranged along the rotating groove, movable holes are formed in the locking wheel and the clamping gear, the fixing rod is sleeved in the movable holes, a fixing spring is sleeved outside the fixing rod, and the fixing spring is located between the clamping gear and the rotating groove.

The utility model further technically improves that: the outside of each locking wheel all is connected with the connecting block, all is connected with the connecting rope on each connecting block, is equipped with the wiring groove with connecting rope adaptation on the connecting rod.

The utility model further technically improves that: the clamping plate is slidably mounted on the first mounting plate, the two sliding blocks are slidably mounted on the first mounting plate, the sliding directions of the two sliding blocks are perpendicular to the sliding directions of the clamping plate, the clamping conical grooves are formed in the first mounting plate, the two sliding blocks are located in the clamping conical grooves, the two sliding blocks are connected with the two connecting ropes respectively, and the clamping plate is provided with a handle.

The utility model further technically improves that: the clamping plate is provided with a driving spring for driving the sliding block to move towards the direction close to the connecting rope.

The utility model further technically improves that: the first mounting plate is provided with a locking mechanism for fixing the clamping plate.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The mechanism drives the locking wheel to be gradually clamped with the plurality of oblique clamping blocks along the plurality of oblique grooves through the fixing spring, the locking wheel is clamped with the plurality of oblique clamping blocks, meanwhile, the clamping gear is clamped into the gear groove under the action of the fixing spring, and meanwhile, the other side of the clamping gear is clamped and fixed with the rotating groove, so that the connecting rod and the first swing arm are fixed, and meanwhile, the second swing arm and the connecting rod are fixed, so that the whole folding chair is in an extension state in a daily state, and can be unfolded and fixed without clamping;

(2) When the connecting rod and the first swing arm are required to be released to be fixed, and the second swing arm and the connecting rod are also fixed, the locking wheel is enabled to gradually slide out of the plurality of oblique clamping blocks along the plurality of oblique grooves through reversing the locking wheel, so that the locking wheel and the oblique grooves are released from clamping, meanwhile, the locking wheel drives the clamping gear to move in the direction away from the gear groove, so that the clamping gear is released from clamping with the gear groove, and the clamping gear is only positioned in the rotating groove, so that the first swing arm and the second swing arm can be freely folded, the whole folding chair is conveniently folded, and the folding storage of the whole folding chair is convenient;

(3) The clamping plate is driven to slide through the handle, and drives the two sliding blocks to slide vertically through the clamping conical groove, so that the connecting rope is driven to pull the two connecting blocks and the two locking wheels to rotate reversely, the locking is released, the folding storage of the whole folding chair is facilitated, and the folding efficiency of the folding chair is improved.

Drawings

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

FIG. 1 is a schematic perspective view of a folded state of the present utility model;

FIG. 2 is a perspective view of the utility model in an extended state;

FIG. 3 is an exploded view of the structure of the present utility model;

FIG. 4 is a diagram of another perspective explosion configuration of the present utility model;

FIG. 5 is a diagram of another perspective explosion configuration of the present utility model;

FIG. 6 is a perspective view of the locking wheel of the present utility model;

FIG. 7 is a perspective view of the diagonal latch of the present utility model;

fig. 8 is a block diagram of the sliding block of the present utility model in the clamping tapered groove.

In the figure: 1. a first mounting plate; 2. a second mounting plate; 3. a connecting rod; 4. a first swing arm; 5. a second swing arm; 6. a locking wheel; 7. a gear groove; 8. an oblique clamping block; 9. an inclined groove; 10. the gear is clamped; 11. a fixed rod; 12. a movable hole; 13. a fixed spring; 14. a rotating groove; 15. a connecting rope; 16. wiring grooves; 17. a clamping plate; 18. a sliding block; 19. a handle; 20. a drive spring; 21. clamping the conical groove; 22. and a bottom supporting frame.

Detailed Description

In order to further describe the technical means and effects adopted by the utility model for achieving the preset aim, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the utility model with reference to the attached drawings and the preferred embodiment.

Referring to fig. 1-8, the present utility model provides a locking mechanism of a folding chair, which comprises a first mounting plate 1 and a second mounting plate 2, wherein the first mounting plate 1 and the second mounting plate 2 are rotatably connected with a connecting rod 3, one end of the connecting rod 3, which is close to the second mounting plate 2, is rotatably connected with a first swing arm 4, the first swing arm 4 is connected with the second mounting plate 2, one end of the connecting rod 3, which is far away from the first swing arm 4, is rotatably connected with a second swing arm 5, a bottom support frame 22 is arranged on the second swing arm 5, and locking mechanisms are arranged on the first swing arm 4 and the second swing arm 5; when the first mounting plate 1, the second mounting plate 2 and the bottom supporting frame 22 are stretched, the connecting rod 3 and the first swing arm 4 are fixed through the locking mechanism, and the second swing arm 5 and the connecting rod 3 are also fixed, so that the whole folding chair is locked, and the folding chair is kept in a stretched state;

the locking mechanism comprises a locking wheel 6, gear grooves 7 are formed in the two ends of the connecting rod 3, a plurality of oblique clamping blocks 8 are arranged in the gear grooves 7 along the axes of the gear grooves 7, a plurality of oblique grooves 9 which are matched with the oblique clamping blocks 8 are formed in the locking wheel 6, clamping gears 10 are arranged in the gear grooves 7, rotating grooves 14 corresponding to the gear grooves 7 are formed in the first swing arms 4 and the second swing arms 5, fixed rods 11 are arranged in the rotating grooves 14 along the rotating axes of the rotating grooves, movable holes 12 are formed in the locking wheel 6 and the clamping gears 10, the fixed rods 11 are sleeved in the movable holes 12, fixing springs 13 are sleeved outside the fixed rods 11, and the fixing springs 13 are located between the clamping gears 10 and the rotating grooves 14. By rotating the locking wheel 6, the locking wheel 6 is gradually clamped with the plurality of inclined clamping blocks 8 along the plurality of inclined grooves 9, the locking wheel 6 is clamped with the plurality of inclined clamping blocks 8, the clamping gear 10 is clamped into the gear groove 7 under the action of the fixing spring 13, and meanwhile, the other side of the clamping gear 10 is clamped and fixed with the rotating groove 14, so that the connecting rod 3 and the first swing arm 4 are fixed, and meanwhile, the second swing arm 5 and the connecting rod 3 are also fixed; simultaneously, when need be relieved and make fixed between connecting rod 3 and the first swing arm 4, also fix between second swing arm 5 and the connecting rod 3 simultaneously, through reversing locking wheel 6, make locking wheel 6 slide out a plurality of oblique fixture blocks 8 gradually along a plurality of sloping slot 9, thereby with locking wheel 6 and sloping slot 9 release the joint, locking wheel 6 drives joint gear 10 simultaneously and removes to the direction of keeping away from gear groove 7, thereby with joint gear 10 release with the joint of gear groove 7, joint gear 10 is located rotation inslot 14 only, thereby make first swing arm 4 and second swing arm 5 can freely fold.

The outside of each locking wheel 6 all is connected with the connecting block, all is connected with connecting rope 15 on each connecting block, is equipped with the wiring groove 16 with connecting rope 15 adaptation on the connecting rod 3. The connecting rope 15 is pulled to drive the connecting block and the locking wheel 6 to rotate, so that the locking wheel 6 is reversed, the locking wheel 6 gradually slides out of the plurality of inclined clamping blocks 8 along the plurality of inclined grooves 9, and the locking wheel 6 is unlocked from the inclined grooves 9.

The first mounting plate 1 is provided with a clamping plate 17 in a sliding manner, the first mounting plate 1 is provided with two sliding blocks 18 in a sliding manner, the sliding directions of the two sliding blocks 18 are perpendicular to the sliding directions of the clamping plate 17, the first mounting plate 1 is provided with a clamping conical groove 21, the two sliding blocks 18 are positioned in the clamping conical groove 21, the two sliding blocks 18 are respectively connected with the two connecting ropes 15, and the clamping plate 17 is provided with a handle 19. The clamping plate 17 is driven to slide by pulling the handle 19, and the clamping plate 17 drives the two sliding blocks 18 to slide vertically by the clamping conical groove 21, so that the connecting rope 15 is driven to pull the connecting block and the locking wheel 6 to rotate reversely, the locking is released, and the folding and storage of the whole folding chair are facilitated.

The engagement plate 17 is provided with a drive spring 20 for driving the slider 18 to move in a direction approaching the connection cord 15. When the handle 19 is not pulled to drive the clamping plate 17 to slide, the driving spring 20 drives the sliding block 18 to slide towards the direction of the connecting rope 15, so that the connecting rope 15 is loosened, and the locking wheel 6 can conveniently rotate positively.

The first mounting plate 1 is provided with a locking mechanism for fixing the clamping plate 17. The clamping plate 17 is clamped and fixed through the locking mechanism, so that the clamping plate 17 is clamped and fixed, and the phenomenon that the folding chair is loosened due to the fact that the clamping plate 17 slides when the folding chair is unfolded is avoided.

When the folding chair is used, the clamping plate 17 is driven to slide by pulling the handle 19, and the clamping plate 17 drives the two sliding blocks 18 to slide vertically by the clamping conical groove 21, so that the connecting rope 15 is driven to pull the connecting block and the locking wheel 6 to rotate reversely, the locking is released, and the folding and storage of the whole folding chair are facilitated; the connecting rope 15 is pulled to drive the connecting block and the locking wheel 6 to rotate, so that the locking wheel 6 is reversed, the locking wheel 6 gradually slides out of the plurality of inclined clamping blocks 8 along the plurality of inclined grooves 9, and the locking wheel 6 is unlocked from the inclined grooves 9; the locking wheel 6 gradually slides out of the plurality of oblique clamping blocks 8 along the plurality of oblique grooves 9, so that the locking wheel 6 is released from being clamped with the oblique grooves 9, meanwhile, the locking wheel 6 drives the clamping gear 10 to move in a direction away from the gear groove 7, so that the clamping gear 10 is released from being clamped with the gear groove 7, and the clamping gear 10 is only positioned in the rotating groove 14, so that the first swing arm 4 and the second swing arm 5 can be freely folded; the locking wheel 6 is driven to be gradually clamped with the inclined clamping blocks 8 along the inclined grooves 9 through the fixing springs 13, the locking wheel 6 is clamped with the inclined clamping blocks 8, the clamping gear 10 is clamped into the gear groove 7 under the action of the fixing springs 13, and meanwhile, the other side of the clamping gear 10 is fixedly clamped with the rotating groove 14, so that the connecting rod 3 and the first swing arm 4 are fixed, and meanwhile, the second swing arm 5 and the connecting rod 3 are also fixed.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present utility model.

Claims

1. The utility model provides a locking mechanical system of folding chair, includes first mounting panel (1) and second mounting panel (2), rotate on first mounting panel (1) and be connected with connecting rod (3), the one end that is close to second mounting panel (2) on connecting rod (3) rotates and is connected with first swing arm (4), first swing arm (4) are connected with second mounting panel (2), the one end that keeps away from first swing arm (4) on connecting rod (3) rotates and is connected with second swing arm (5), be equipped with bottom support frame (22) on second swing arm (5), its characterized in that, all be equipped with locking mechanical system on first swing arm (4) and the second swing arm (5);

the locking mechanism comprises a locking wheel (6), gear grooves (7) are formed in the two ends of the connecting rod (3), a plurality of oblique clamping blocks (8) are arranged in the gear grooves (7) along the axes of the gear grooves, a plurality of oblique grooves (9) matched with the oblique clamping blocks (8) are formed in the locking wheel (6), clamping gears (10) are arranged in the gear grooves (7), and rotating grooves (14) corresponding to the gear grooves (7) are formed in the first swing arms (4) and the second swing arms (5).

2. The locking mechanism of a folding chair according to claim 1, further comprising a fixing rod (11), wherein the fixing rod (11) is arranged on the rotating groove (14) and is axially arranged along the rotating groove, the locking wheel (6) and the clamping gear (10) are respectively provided with a movable hole (12), the fixing rod (11) is sleeved in the movable hole (12), the fixing spring (13) is sleeved outside the fixing rod (11), and the fixing spring (13) is positioned between the clamping gear (10) and the rotating groove (14).

3. Locking mechanism of a folding chair according to claim 1, characterized in that the outer side of each locking wheel (6) is connected with a connecting block, each connecting block is connected with a connecting rope (15), and the connecting rod (3) is provided with a wiring groove (16) adapted to the connecting rope (15).

4. A locking mechanism of a folding chair according to claim 3, characterized in that the first mounting plate (1) is slidably provided with a clamping plate (17), the first mounting plate (1) is slidably provided with two sliding blocks (18), the sliding directions of the two sliding blocks (18) are perpendicular to the sliding directions of the clamping plate (17), the first mounting plate (1) is provided with a clamping conical groove (21), the two sliding blocks (18) are both positioned in the clamping conical groove (21), the two sliding blocks (18) are respectively connected with two connecting ropes (15), and the clamping plate (17) is provided with a handle (19).

5. Locking mechanism for a folding chair according to claim 4, characterized in that the clamping plate (17) is provided with a driving spring (20) for driving the sliding block (18) to move towards the direction approaching the connecting rope (15).

6. Locking mechanism for a folding chair according to claim 5, characterized in that the first mounting plate (1) is provided with a locking mechanism for the fastening of the clamping plate (17).