CN211883109U - Seat lifting and locking structure of child dining chair - Google Patents

Abstract

The utility model discloses a chair lifting locking structure of a child dining chair, which comprises a bracket and a lifting frame, wherein a locking device for locking the lifting frame is arranged in the lifting frame, a plurality of locking grooves are arranged on the bracket, the locking device comprises a positioning lock and a handle, the positioning lock is rotationally arranged in the lifting frame, a guide inclined plane is arranged on the positioning lock, a stopper matched with the locking grooves in a locking way is also arranged on the positioning lock, a first elastic part is arranged between the positioning lock and the lifting frame in a supporting way, and the first elastic part always tends to push the stopper to the locking grooves; the handle is arranged in the lifting frame in a sliding mode, one end of the handle is arranged corresponding to the guide inclined plane, a second elastic piece is arranged between the handle and the lifting frame in a propping mode, and the second elastic piece always tends to enable the handle to be far away from the guide inclined plane; when the handle is slid, the handle is abutted to the guide inclined plane, so that the positioning lock is driven to rotate, and the limiting block is far away from the locking groove. The utility model discloses possess simple structure, convenient operation and connect inseparable advantage when locking state.

Description

Seat lifting and locking structure of child dining chair

Technical Field

The utility model relates to a children's dining chair technical field, in particular to children's dining chair's seat lift locking structure.

Background

The child dining chair is a common tool for children to play, study and eat and conveniently feed for the children. Present children's dining chair includes seat support and support, the seat support is fixed on the support usually, can not adjust according to actual conditions such as children's height, bring inconvenience for the user, in order to adjust the height of seat support, at present mainly through at the shelf location extension leg, this kind of structure is simple, but comparatively loaded down with trivial details during installation or dismantlement, also partial children's dining chair can be with the mobilizable setting of seat support on the support, and lock through bolt etc. and lock, though can realize the regulation to seat support height like this, however, the elevation structure and the locking structure of current this kind of children's dining chair are comparatively complicated usually, processing assembly and operation are comparatively inconvenient, also break down easily, and this kind of locking structure connects too loosely when locking state, lead to easy gliding or the tenesmus of seat support, there is certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a children dining chair's seat lift locking structure to prior art's defect and not enough, possess simple structure, convenient operation and connect closely and reliable advantage when the lock-out state.

The technical scheme adopted by the utility model for solving the technical problems is that the chair lifting locking structure of the child dining chair comprises a support, a lifting frame which is arranged on the support and can slide up and down, a locking device which locks the lifting frame is arranged in the lifting frame, a plurality of locking grooves are arranged on the support, the locking device comprises a positioning lock and a handle, the positioning lock is rotationally arranged in the lifting frame, a guide inclined plane is arranged on the positioning lock, a limiting block which is matched with the locking grooves in a locking way is also arranged on the positioning lock, a first elastic part is arranged between the positioning lock and the lifting frame in a supporting way, and the first elastic part always tends to push the limiting block to the locking grooves; the handle is arranged in the lifting frame in a sliding mode, one end of the handle is arranged corresponding to the guide inclined plane, a second elastic piece is arranged between the handle and the lifting frame in a propping mode, and the second elastic piece always tends to enable the handle to be far away from the guide inclined plane; when sliding when the hand (hold), the hand (hold) support to the direction inclined plane to the drive the location lock rotates, and makes the stopper keep away from the locking groove.

Furthermore, a mounting seat is arranged in the lifting frame, and the middle part of the positioning lock is rotatably connected to the mounting seat through a pin shaft.

Furthermore, a limiting hole is formed in the upper end of the positioning lock, and the guide inclined plane is arranged on the inner side wall of the limiting hole.

Furthermore, the limiting block is arranged at the lower end of the positioning lock.

Furthermore, the upper end of the handle is exposed outside the lifting frame, the lower end of the handle is provided with a driving shaft, and the driving shaft penetrates through the limiting hole and is arranged corresponding to the guide inclined plane.

Furthermore, a sliding groove for the handle to slide is arranged in the lifting frame, and the sliding groove is longitudinally distributed.

Furthermore, the sliding groove is convexly provided with a limiting shaft, and the handle is provided with a waist-shaped hole in sliding fit with the limiting shaft.

The utility model has the advantages that: firstly, a plurality of locking grooves are formed in the support, limiting blocks matched with the locking grooves in a locking mode are arranged on the positioning locks, first elastic pieces are arranged between the positioning locks and the lifting frames in a propping mode, the first elastic pieces always have the tendency of pushing the limiting blocks to the locking grooves, the lifting frames are connected firmly and stably in a locking state, and the problem that the lifting frames easily slide or fall in the prior art is solved;

a guide inclined plane is arranged on the positioning lock, one end of the handle is arranged corresponding to the guide inclined plane, a second elastic piece is arranged between the handle and the lifting frame in a propping manner, the second elastic piece always has a tendency of keeping the handle away from the guide inclined plane, and when the handle is slid, the handle props against the guide inclined plane, so that the positioning lock is driven to rotate, the limiting block is kept away from the locking groove, the reaction is fast during unlocking, and the operation is convenient; generally, the utility model discloses simple structure, convenient operation and connection firm advantage have been possessed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic sectional view at C in fig. 1.

Fig. 3 is a schematic structural diagram of the middle positioning lock of the present invention.

Fig. 4 is a schematic structural view of the handle of the present invention.

Fig. 5 is a schematic structural view of the present invention applied to a child seat.

Shown in the figure: 1-a scaffold; 11-locking groove; 2, a lifting frame; 2A-left shell; 2B-right shell; 21-a mounting seat; 22-a chute; 221-a limit shaft; 23-a sliding sleeve; 24-a first mounting hole; 25-step; 3-positioning the lock; 31-a guide ramp; 32-a limiting block; 321-connecting column; 33-a limiting hole; 4-handle; 41-a drive shaft; 42-kidney shaped hole; 43-a second mounting hole; 5-a first elastic member; 6-a second elastic member; 7-pin shaft.

Detailed Description

For a more intuitive and complete understanding of the technical solution of the present invention, the following non-limiting characteristic description is now performed by combining the drawings of the present invention:

as shown in fig. 1 to 5, a seat lifting and locking structure of a child dining chair comprises a support 1, a lifting frame 2 which is arranged on the support 1 and can slide up and down, a locking device which locks the lifting frame 2 is arranged in the lifting frame 2, a plurality of locking grooves 11 are arranged on the support 1, the locking device comprises a positioning lock 3 and a handle 4, the positioning lock 3 is rotatably arranged in the lifting frame 2, a guide inclined plane 31 is arranged on the positioning lock 3, a limiting block 32 which is matched with the locking grooves 11 in a locking manner is also arranged on the positioning lock 3, a first elastic element 5 is arranged between the positioning lock 3 and the lifting frame 2 in a supporting manner, and the first elastic element 5 always tends to push the limiting block 32 to the locking; the handle 4 is arranged in the lifting frame 2 in a sliding mode, one end of the handle 4 is arranged corresponding to the guide inclined plane 31, the second elastic piece 6 is arranged between the handle 4 and the lifting frame 2 in a propping mode, and the second elastic piece 6 always tends to enable the handle 4 to be far away from the guide inclined plane 31; when the handle 4 is slid, the handle 4 abuts against the guiding inclined surface 31, so that the positioning lock 3 is driven to rotate, and the stopper 32 is far away from the locking groove 11.

Preferably, the lifting frame 2 is integrally provided with a sliding sleeve 23 for the support 1 to slide, the support 1 is sleeved in the sliding sleeve 23, the side wall of the lifting frame 2 is provided with a through hole communicated with the sliding sleeve 23, the through hole is arranged corresponding to the locking groove 11, and the limiting block 32 penetrates through the through hole to be locked and matched with the locking groove 11, so that the support 1 and the lifting frame 2 can be conveniently connected, and the connection is more compact and firm; the crane 2 is provided with a first mounting hole 24, the limiting block 32 is provided with a connecting column 321, the first elastic part 5 is mounted in the first mounting hole 24, one end of the first elastic part 5 is sleeved on the connecting column 321, the other end of the first elastic part 5 is abutted to the inner side wall of the crane 2, and the first elastic part 5 is convenient to mount.

The lifting frame 2 is internally provided with an installation seat 21, and the middle part of the positioning lock 3 is rotationally connected to the installation seat 21 through a pin shaft 7; the upper end of the positioning lock 3 is provided with a limiting hole 33, and the guide inclined plane 31 is arranged on the inner side wall of the limiting hole 33; the limiting block 32 is arranged at the lower end of the positioning lock 3.

The upper end of the handle 4 is exposed out of the lifting frame 2, the lower end of the handle 4 is provided with a driving shaft 41, and the driving shaft 41 penetrates through the limiting hole 33 and is arranged corresponding to the guide inclined plane 31.

A sliding chute 22 for the handle 4 to slide is arranged in the lifting frame 2, and the sliding chute 22 is longitudinally distributed; the sliding groove 22 is convexly provided with a limit shaft 221, and the handle 4 is provided with a waist-shaped hole 42 which is in sliding fit with the limit shaft 221.

Preferably, the handle 4 is provided with a second mounting hole 43, the inner side wall of the lifting frame 2 is integrally provided with a step 25, one end of the second elastic member 6 abuts against the bottom surface of the second mounting hole 43, and the other end of the second elastic member 6 abuts against the bottom surface of the step 25, so that the second elastic member 6 is convenient to mount.

Specifically, the lifting frame 2 comprises a left shell 2A and a right shell 2B, the left shell 2A and the right shell 2B are mutually covered and connected, and a cavity for installing a locking device is formed inside the lifting frame; in being applied to children's dining chair (refer to fig. 5), crane 2 and support 1 are equipped with two respectively, connect through the horizontal pole between two cranes 2, also connect through the horizontal pole between two supports 1, all are equipped with locking device in two cranes 2.

Preferably, the first elastic member 5 and the second elastic member 6 each employ a compression spring.

The utility model discloses a concrete theory of operation as follows: under normal conditions, under the elastic force of the first elastic piece 5, the limiting block 32 penetrates through the through hole to be matched with the locking groove 11 in a locking mode, the support 1 and the lifting frame 2 are in a locking state, and meanwhile, under the elastic force of the second elastic piece 6, the driving shaft 41 on the handle 4 is far away from the guide inclined plane 31; when the height of crane 2 relative support 1 is adjusted to needs, pulling hand (hold) 4, make hand (hold) 4 overcome the elasticity of second elastic component 6, hand (hold) 4 upwards slides along spout 22, drive shaft 41 supports to leading inclined plane 31, and drive location lock 3 rotates round mount pad 21, and overcome the elasticity of first elastic component 5, make stopper 32 keep away from locking groove 11, be in the unblock state this moment, slide crane 2 from top to bottom simultaneously and adjust to suitable height, lock the cooperation with locking groove 11 once more until stopper 32, accomplish the locking, avoid gliding or tenesmus.

Above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made according to the structure, characteristics and principle of the claims of the present invention are included in the claims of the present invention.

Claims (7)

1. The utility model provides a children dining chair's seat lift locking structure, including support (1), gliding setting up from top to bottom in crane (2) on support (1), be equipped with in crane (2) with the locking device of crane (2) locking, its characterized in that: a plurality of locking grooves (11) are arranged on the bracket (1), the locking device comprises a positioning lock (3) and a handle (4),

the positioning lock (3) is rotatably arranged in the lifting frame (2), a guide inclined plane (31) is arranged on the positioning lock (3), a limiting block (32) matched with the locking groove (11) in a locking mode is further arranged on the positioning lock (3), a first elastic piece (5) is arranged between the positioning lock (3) and the lifting frame (2) in a supporting mode, and the first elastic piece (5) always tends to push the limiting block (32) to the locking groove (11);

the handle (4) is arranged in the lifting frame (2) in a sliding mode, one end of the handle (4) is arranged corresponding to the guide inclined plane (31), a second elastic piece (6) is arranged between the handle (4) and the lifting frame (2) in a propping mode, and the second elastic piece (6) always tends to enable the handle (4) to be far away from the guide inclined plane (31); when sliding hand (4), hand (4) support to direction inclined plane (31), thereby drive location lock (3) rotate, and make stopper (32) keep away from locking groove (11).

2. The seat lifting and locking structure for children's dining chair as claimed in claim 1, wherein: the lifting frame (2) is internally provided with a mounting seat (21), and the middle part of the positioning lock (3) is rotationally connected onto the mounting seat (21) through a pin shaft (7).

3. The seat lifting and locking structure for children's dining chair as claimed in claim 2, wherein: spacing hole (33) have been seted up to the upper end of location lock (3), direction inclined plane (31) set up in on the inside wall of spacing hole (33).

4. The seat lifting and locking structure for a child dining chair according to claim 3, wherein: the limiting block (32) is arranged at the lower end of the positioning lock (3).

5. The seat lifting and locking structure for a child dining chair according to claim 3, wherein: the upper end of hand (4) expose in crane (2) outside, the lower extreme of hand (4) is equipped with drive shaft (41), drive shaft (41) pass spacing hole (33) and with direction inclined plane (31) correspond the setting.

6. The seat lifting and locking structure for children's dining chair according to claim 5, wherein: a sliding groove (22) for the handle (4) to slide is arranged in the lifting frame (2), and the sliding groove (22) is longitudinally distributed.

7. The seat lifting and locking structure for children's dining chair according to claim 6, wherein: the sliding groove (22) is convexly provided with a limiting shaft (221), and the handle (4) is provided with a waist-shaped hole (42) which is in sliding fit with the limiting shaft (221).

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