Rotary connecting mechanism of supporting legs and child dining chair

Abstract

The utility model discloses a rotary connecting mechanism of a supporting leg and a child dining chair, a rotary middle body is further arranged between a first rotary body and a second rotary body, a first positioning through hole and a second positioning through hole are crossed and communicated to form a middle through hole, a rotary locking block can rotate in the middle through hole, an auxiliary locking block is further arranged on the outer side of the rotary locking block, and the auxiliary locking block can rotate in the middle through hole. In the rotating state, the rotating locking block is extruded to drive the auxiliary locking block to move downwards together to enter the shell of the second rotating body, the rotating locking block is still located in the middle through hole and does not hinder the rotating middle body from rotating, the auxiliary locking block moves out of the first positioning through hole or the second positioning through hole, and the auxiliary locking block moves out of the first positioning through hole or the second positioning through hole. The foldable dining chair has the advantages that whether the dining chair is folded or not is judged, folding of the supporting legs of the dining chair is not affected, and folding of the dining chair is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of children's dining chairs, in particular to a rotary connection mechanism for supporting feet and a children's dining chair. Background Art

[0002] Existing children's dining chairs are either wooden high chairs or lower chair bodies. The former is for formal occasions where children and adults sit at the dining table together, and the latter is commonly used at home for children to eat or play by themselves. The utility model refers to the latter type of dining chair. A children's dining chair generally includes a seat board, support feet, a backrest, and a dining board. The support feet are arranged below the seat board, the backrest is arranged behind the seat board, and the dining board is arranged in the front of the seat board. The dining board and the backrest wrap around the child from the front and back, providing a certain degree of protection for the child.

[0003] The Chinese patent with the patent number 201721747661.6 discloses a utility model patent for a rotary connection mechanism for supporting feet and a children's dining chair. The rotary connection mechanism of the support feet includes a first rotating body and a second rotating body. The first rotating body is provided with a first positioning groove and a second positioning groove that intersect and penetrate each other. The second rotating body is provided with a third positioning groove. A movable rotary lock block is arranged between the first rotating body and the second rotating body. In the first locked state, the rotary lock block is located in a first cavity formed by the first positioning groove and the third positioning groove. In the second locked state, the rotary lock block is located in a second cavity formed by the second positioning groove and the third positioning groove. The rotary lock block includes a first part and a second part. In the first locked state, the first positioning groove and the third positioning groove are relatively arranged to jointly form the first cavity. The first part and the second part of the rotary lock block are respectively received in the first positioning groove and the third positioning groove, and the first rotating body and the second rotating body are locked. During the process of changing from the first locked state to the second locked state, the rotary lock block is stressed to completely move the first part out of the first positioning groove and into the third positioning groove, unlocking the first rotating body and the second rotating body. Rotate the first rotating body or the second rotating body to align the second positioning groove with the third positioning groove to jointly form the second cavity. The rotary lock block is released and the first part enters the second positioning groove, reaching the second locked state, and the first rotating body and the second rotating body are locked again. A rotary intermediate body is also arranged between the first rotating body and the second rotating body. The rotary intermediate body is provided with a first positioning through hole and a second positioning through hole that intersect and penetrate each other. The rotary intermediate body is provided with a jacking component for fixing the dining board. When the dining board is opened, the third positioning groove and the first positioning through hole are relatively arranged. The first part and the second part of the rotary lock block are respectively received in the first positioning through hole and the third positioning groove, and the dining board is locked. When folding the dining board, the rotary lock block is stressed to completely move the first part out of the first positioning through hole and into the third positioning groove, unlocking the dining board. Rotate the rotary intermediate body to align the second positioning through hole with the third positioning groove. The rotary lock block is released and the first part enters the second positioning through hole, and the dining board is locked again.

[0004] The disadvantages of the prior art are as follows: The rotating intermediate is used to fix the dining board. When folding the dining chair, it is necessary to synchronously fold the dining board to drive the rotating intermediate to rotate in order to fold the first rotating body and the second rotating body. Otherwise, the first positioning hole and the second positioning hole of the rotating intermediate will block the rotation of the rotating lock block, making the operation inconvenient. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a children's dining chair that does not need to be synchronously folded during the folding process, making the folding of the dining chair more convenient.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: A rotating connection mechanism for a support leg, including a first rotating body and a second rotating body that rotate relative to each other. The first rotating body is provided with a first positioning groove and a second positioning groove that intersect and penetrate each other. The second rotating body is provided with a third positioning groove. A movable rotating lock block is provided between the first rotating body and the second rotating body. In the first locked state, the rotating lock block is located in a first cavity formed by the first positioning groove and the third positioning groove. In the second locked state, the rotating lock block is located in a second cavity formed by the second positioning groove and the third positioning groove; in the first locked state, the first positioning groove and the third positioning groove are oppositely arranged to jointly form the first cavity; in the second locked state, the second positioning groove and the third positioning groove are oppositely arranged to jointly form the first cavity. A rotating intermediate is further provided between the first rotating body and the second rotating body. The rotating intermediate is provided with a first positioning through hole and a second positioning through hole that intersect and penetrate each other. It is characterized in that the first positioning through hole and the second positioning through hole intersect and penetrate to form an intermediate through hole. The rotating lock block can rotate in the intermediate through hole. An auxiliary lock block is further provided on the outer side of the rotating lock block. The third positioning groove is provided in the auxiliary lock block. A limiting component is provided between the auxiliary lock block and the rotating lock block. When the rotating lock block moves down into the third positioning groove, it drives the auxiliary lock block to move down into the shell of the second rotating body; in the two locked states, the rotating lock block is inserted into the intermediate through hole, the rotating lock block is simultaneously inserted into the first positioning groove or the second positioning groove, the auxiliary lock block is inserted into the first positioning through hole or the second positioning through hole, and the rotating intermediate is locked by the first positioning through hole or the second positioning through hole; in the rotating state, the rotating lock block is driven by extrusion to drive the auxiliary lock block to move down into the shell of the second rotating body together. The rotating lock block is still in the intermediate through hole, and the rotating lock block does not hinder the rotation of the rotating intermediate. The auxiliary lock block moves out of the first positioning through hole or the second positioning through hole, and the first positioning through hole or the second positioning through hole does not affect the rotation of the rotating intermediate.

[0007] A further preferred solution of the present invention is: A cavity for accommodating and fixing the rotating lock block and the auxiliary lock block is provided inside the second rotating body. The rotation of the second rotating body will drive the rotation of the rotating lock block and the auxiliary lock block.

[0008] A further pre-selected scheme of the utility model is: the auxiliary locking block is arranged at the periphery of the cavity and is locked by the limiting block in the cavity, the rotating locking piece is arranged in the middle position of the cavity, a secondary cavity is arranged in the middle of the auxiliary locking block, the rotating locking block is arranged in the secondary cavity, and the auxiliary locking block surrounds and limits the rotating locking block.

[0009] A further pre-selected scheme of the utility model is: a limiting protrusion is provided on the inner wall of the auxiliary cavity of the auxiliary locking block, a limiting groove is provided below the rotating locking block, the limiting protrusion is inserted into the limiting groove, so that when the rotating locking block moves downward, the auxiliary locking block is pushed downward, and the rotating locking block can be separated from the auxiliary locking block and move upward independently.

[0010] A further preselected solution of the utility model is: a first return spring is arranged below the rotating lock block, and the first return spring pushes the rotating lock block to move toward the first positioning groove or the second positioning groove.

[0011] A further preselected solution of the utility model is: protrusions are arranged on both sides of the auxiliary locking block, a second return spring is arranged below the protrusion, and the second return spring pushes the auxiliary locking block to move upward.

[0012] A further pre-selected scheme of the utility model is: a button through hole is provided on the first rotating body, the control button passes through the button through hole and abuts against the rotating lock block, and after the control button presses down the rotating lock block, it drives the auxiliary locking block to move out of the first positioning through hole and the second positioning through hole. During rotation, the auxiliary locking block is brought into the rotating space below the rotating intermediate body and rotates, and the pressure on the control button stops, and the rotating lock block is reset to reset the control knob.

[0013] A further preselected solution of the utility model is: the rotating intermediate body is provided with an insertion hole and a locking hole, the insertion hole is used to insert the fixed insert of the dining board, and the locking hole is used to insert the locking hook of the dining board.

[0014] A children's dining chair comprises a dining chair body and a dining board, wherein the dining chair body comprises a plurality of supporting legs, and is characterized in that a rotating connection mechanism for the supporting legs as described in any one of claims 1 to 9 is provided between the dining board and the dining chair body, and the supporting legs are connected to a first rotating body or a second rotating body.

[0015] Compared with the prior art, in the rotating intermediate body of the present utility model, the first positioning through hole and the second positioning through hole form an intermediate through hole. The rotating lock block can freely rotate within the intermediate through hole, and the rotating intermediate body will not hinder the relative rotation of the rotating lock block. While the auxiliary lock block will be fixed by the rotating intermediate body in the locked state and will be received below the rotating intermediate body in the rotating state, no longer hindering the rotation of the rotating intermediate body. And the dining board is installed on the rotating intermediate body, so it can be realized that during the rotation process, regardless of whether the dining chair is folded or not, it will not affect the relative movement of the rotating lock block, that is, it will not affect the relative rotation of the first rotating body and the second rotating body. That is, whether the dining chair is folded or not will not affect the folding of the supporting feet of the dining chair, making the folding of the dining chair more convenient. Description of the Drawings

[0016] Figure 1 Is a three-dimensional view of the dining chair in the present utility model;

[0017] Figure 2 Is a connection diagram of the present rotating connection mechanism and the dining board;

[0018] Figure 3 Is a three-dimensional view of the rotating connection mechanism in the present utility model;

[0019] Figure 4 Is the explosion of the rotating connection mechanism in the present utility model Figure 1 ;

[0020] Figure 5 Is the explosion of the rotating connection mechanism in the present utility model Figure 2 ;

[0021] Figure 6 Is a diagram of the cooperation relationship between the rotating intermediate body, the rotating lock block and the auxiliary lock block in the second rotating body;

[0022] Figure 7 Is a three-dimensional view of the rotating lock block and the auxiliary lock block both protruding in the locked state in the second rotating body;

[0023] Figure 8 Is a three-dimensional view of the rotating lock block and the auxiliary lock block both moving down in the rotating state in the second rotating body;

[0024] Figure 9 Is a three-dimensional view of the rotating lock block and the auxiliary lock block. Detailed Embodiment

[0025] The present utility model will be further described in detail below in conjunction with the embodiments of the drawings.

[0026] Such as Figures 1-9As shown in the figure, a rotary connection mechanism for a support leg includes a first rotating body 1 and a second rotating body 2 that rotate relative to each other. The first rotating body 1 and the second rotating body 2 are installed on support legs that can be folded with each other. The mutual folding of the first rotating body 1 and the second rotating body 2 can achieve the folding of the children's dining chair.

[0027] The first rotating body 1 is provided with a first positioning groove 3 and a second positioning groove 4 that intersect and penetrate each other. The second rotating body 2 is provided with a third positioning groove 5. There is a movable rotary lock block 6 between the first rotating body 1 and the second rotating body 2. In the first locked state, the rotary lock block 6 is located in a first cavity formed by the first positioning groove 3 and the third positioning groove 5. In the second locked state, the rotary lock block 6 is located in a second cavity formed by the second positioning groove 4 and the third positioning groove 5. In the first locked state, the first positioning groove 3 and the third positioning groove 5 are oppositely arranged to jointly form the first cavity. In the second locked state, the second positioning groove 4 and the third positioning groove 5 are oppositely arranged to jointly form the second cavity. The first locked state and the second locked state are the fully unfolded state and the fully folded state of the dining chair. At this time, the rotary lock block 6 is fixed by the first positioning groove 3, the second positioning groove 4, and the third positioning groove 5 and cannot rotate. The rotating state is an intermediate change state between the first locked state and the second locked state.

[0028] A rotary intermediate body 7 is also provided between the first rotating body 1 and the second rotating body 2. The rotary intermediate body 7 is used to fix the dining chair. The rotary intermediate body 7 is provided with a first positioning through hole 8 and a second positioning through hole 9 that intersect and penetrate each other. The first positioning through hole 8 and the second positioning through hole 9 intersect and penetrate to form an intermediate through hole 10. The rotary lock block 6 can rotate in the intermediate through hole 10. An auxiliary lock block 11 is also provided on the outer side of the rotary lock block 6. The third positioning groove 5 is arranged in the auxiliary lock block 11. A limiting component is arranged between the auxiliary lock block 11 and the rotary lock block 6. When the rotary lock block 6 moves downward into the third positioning groove 5, it drives the auxiliary lock block 11 to move downward into the housing of the second rotating body 2. In the two locked states, the rotary lock block 6 is inserted into the intermediate through hole 10, the rotary lock block 6 is simultaneously inserted into the first positioning groove 3 or the second positioning groove 4, and the auxiliary lock block 11 is inserted into the first positioning through hole 8 or the second positioning through hole 9. The rotary intermediate body 7 is locked by the first positioning through hole 8 or the second positioning through hole 9, that is, the dining chair is locked by the first positioning through hole 8 or the second positioning through hole 9.

[0029] In the rotating state, the rotary lock block 6 is driven by extrusion to drive the auxiliary lock block 11 to move downward into the housing of the second rotating body 2 together. The rotary lock block 6 is still in the intermediate through hole 10. The rotary lock block 6 does not hinder the rotation of the rotary intermediate body 7. The auxiliary lock block 11 moves out of the first positioning through hole 8 or the second positioning through hole 9, and the first positioning through hole 8 or the second positioning through hole 9 does not affect the rotation of the rotary intermediate body 7. Therefore, during the rotation of the dining chair, whether the dining board rotates does not affect the folding of the dining chair.

[0030] like Figure 5 As shown, a cavity 12 for accommodating and fixing the rotating lock block 6 and the auxiliary lock block 11 is provided on the inner side of the second rotating body 2. The second rotating body 2, the rotating lock block 6 and the auxiliary lock block 11 rotate synchronously. The rotation of the second rotating body 2 will drive the rotating lock block 6 and the auxiliary lock block 11 to rotate.

[0031] The auxiliary lock block 11 is arranged at the periphery of the cavity 12 and is locked by the limit block 13 in the cavity 12. The rotary lock is arranged in the middle of the cavity 12. A secondary cavity 13 is arranged in the middle of the auxiliary lock block 11. The rotary lock block 6 is arranged in the secondary cavity 13. The auxiliary lock block 11 surrounds and limits the rotary lock block 6. The rotary lock block 6 and the auxiliary lock block 11 cannot rotate relative to each other. A limit protrusion 14 is arranged on the inner wall of the secondary cavity 13 of the auxiliary lock block 11. A limit groove 15 is arranged below the rotary lock block 6. The limit protrusion 14 is inserted into the limit groove 15, so that when the rotary lock block 6 moves downward, it pushes the auxiliary lock block 11 to move downward. The rotary lock block 6 can be separated from the auxiliary lock block 11 and move upward alone. The rotary lock block 6 can move up and down relative to the auxiliary lock block 11.

[0032] A first return spring 16 is provided below the rotating lock block 6, and the first return spring 16 pushes the rotating lock block 6 to move toward the first positioning groove 3 or the second positioning groove 4. When the rotating lock block 6 is not subjected to force, it is in a state of pushing out the auxiliary cavity 13 of the auxiliary lock block 11 under the action of the first return spring 16, and the control knob 17 is in a pop-up state. Both sides of the auxiliary lock block 11 are provided with protrusions 18, and a second return spring 19 is provided below the protrusion 18, and the second return spring 19 pushes the auxiliary lock block 11 to move upward. When the auxiliary lock block 11 is not subjected to force, it is in a state of pushing out the limit block under the action of the second return spring 19, that is, inserted into the first positioning through hole 8 and the second positioning through hole 9 of the rotating intermediate body 7. The first rotating body 1 is provided with a button through hole 20, through which the control button passes and abuts against the rotating lock block 6. After the control button presses the rotating lock block 6, the auxiliary lock block 11 is driven to move out of the first positioning through hole 8 and the second positioning through hole 9. When rotating, the auxiliary lock block 11 is brought into the rotating space below the rotating intermediate body 7 to rotate, and the pressure on the control button is stopped. The rotating lock block 6 is reset to reset the control knob 17, so that the control knob 17 will automatically pop out and reset when it is not subjected to force. The rotating intermediate body 7 is provided with a plug hole 21 and a lock hole 22. The plug hole 21 is used to insert the fixed insert 23 of the dining board, and the lock hole 22 is used to insert the lock hook 24 of the dining board.

[0033] The children's dining chair comprises a dining chair body 32 and a dining board 31. The dining chair body 32 comprises a plurality of supporting legs 30. A rotating connection mechanism of the supporting legs is provided between the dining board 31 and the dining chair body. The supporting legs are connected to the first rotating body 1 or the second rotating body 2.

[0034] The above has introduced in detail a rotary connection mechanism of a support leg and a children's dining chair provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A rotary connection mechanism for a support leg, comprising a first rotating body and a second rotating body that rotate relative to each other. The first rotating body is provided with a first positioning groove and a second positioning groove that intersect and penetrate each other. The second rotating body is provided with a third positioning groove. A movable rotary locking block is provided between the first rotating body and the second rotating body; In the first locked state, the rotary locking block is located in a first cavity formed by the first positioning groove and the third positioning groove. In the second locked state, the rotary locking block is located in a second cavity formed by the second positioning groove and the third positioning groove; In the first locked state, the first positioning groove and the third positioning groove are oppositely arranged to jointly form the first cavity; In the second locked state, the second positioning groove and the third positioning groove are oppositely arranged to jointly form the second cavity; A rotary intermediate body is further provided between the first rotating body and the second rotating body. The rotary intermediate body is provided with a first positioning through hole and a second positioning through hole that intersect and penetrate each other; Characterized in that The first positioning through hole and the second positioning through hole intersect and penetrate to form an intermediate through hole. The rotary locking block can rotate in the intermediate through hole. An auxiliary locking block is further provided on the outer side of the rotary locking block. The third positioning groove is provided in the auxiliary locking block. A limiting component is provided between the auxiliary locking block and the rotary locking block. When the rotary locking block moves down into the third positioning groove, it drives the auxiliary locking block to move down into the shell of the second rotating body; In the two locked states, the rotary locking block is inserted into the intermediate through hole, the rotary locking block is simultaneously inserted into the first positioning groove or the second positioning groove, the auxiliary locking block is inserted into the first positioning through hole or the second positioning through hole, and the rotary intermediate body is locked by the first positioning through hole or the second positioning through hole; In the rotating state, the rotary locking block is pressed to drive the auxiliary locking block to move down into the shell of the second rotating body together. The rotary locking block is still in the intermediate through hole, and the rotary locking block does not hinder the rotation of the rotary intermediate body. The auxiliary locking block moves out of the first positioning through hole or the second positioning through hole, and the first positioning through hole or the second positioning through hole does not affect the rotation of the rotary intermediate body.

2. The rotational connection mechanism of a support leg according to claim 1, characterized in that A cavity for accommodating and fixing the rotary locking block and the auxiliary locking block is provided inside the second rotating body. The rotation of the second rotating body drives the rotary locking block and the auxiliary locking block to rotate.

3. The rotational connection mechanism of a support leg according to claim 2, characterized in that The auxiliary locking block is arranged on the periphery of the cavity and is locked by a limiting block in the cavity. The rotary locking part is arranged in the middle of the cavity. A secondary cavity is provided in the middle of the auxiliary locking block. The rotary locking block is arranged in the secondary cavity. The auxiliary locking block surrounds and limits the rotary locking block.

4. The rotational connection mechanism of a support leg according to claim 3, characterized in that The auxiliary locking block is provided with a limiting protrusion on the inner wall of the secondary cavity. A limiting groove is provided below the rotary locking block. The limiting protrusion is inserted into the limiting groove, so that when the rotary locking block moves down, it pushes the auxiliary locking block to move down, and the rotary locking block can move up separately from the auxiliary locking block.

5. The rotational connection mechanism of a support leg according to claim 1, wherein A first return spring is provided below the rotary locking block. The first return spring pushes the rotary locking block to move towards the first positioning groove or the second positioning groove.

6. The rotational connection mechanism of a support leg according to claim 1, characterized in that The inner diameter of the intermediate through hole is larger than the outer diameter of the rotary locking block.

7. The rotational connection mechanism of a support leg according to claim 1, characterized in that Convex blocks are provided on both sides of the auxiliary locking block. A second return spring is provided below the convex blocks. The second return spring pushes the auxiliary locking block to move upward.

8. The rotational connection mechanism of a support leg according to claim 1, characterized in that A button through-hole is provided on the first rotating body, and a control button passes through the button through-hole and abuts against a rotating lock block. After the control button presses down the rotating lock block, an auxiliary lock block is driven to move out of the first positioning through-hole and the second positioning through-hole. During rotation, the auxiliary lock block is brought into the rotating space below the rotating intermediate body to rotate. When the pressure on the control button is stopped, the rotating lock block resets to reset the control knob.

9. The rotational connection mechanism of a support leg according to claim 1, characterized in that A jack and a lock hole are provided on the rotating intermediate body. The jack is used for inserting a fixing insert piece of the dining board, and the lock hole is used for inserting a lock hook of the dining board.

10. Children's dining chair, including a dining chair main body and a dining board, the dining chair main body includes a plurality of supporting feet, characterized in that A rotating connection mechanism of a supporting leg as described in any one of claims 1-9 is provided between the dining board and the main body of the dining chair, and the supporting leg is connected to the first rotating body or the second rotating body.

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