Locking structure of child dining chair

Abstract

The utility model belongs to the technical field of child chairs, in particular to a locking structure of a child dining chair, which comprises three main parts, namely a support frame, a swing arm and a chair main body, the chair main body is arranged on the swing arm, the upper end of the swing arm is rotatably connected with the upper end of the support frame, a locking device is arranged between the swing arm and the support frame, and the locking device is arranged on the support frame. The locking device is located at the lower end of the swing arm and the lower end of the supporting frame, the locking device comprises a locking base movably arranged on the supporting frame and a locking piece arranged on the swing arm, the locking base is arranged at the lower end of the supporting frame and can move up and down relative to the supporting frame, and the locking piece is arranged at the lower end of the swing arm and can move up and down relative to the supporting frame. The locking seat is provided with a locking groove, the locking groove is located in the path where the locking piece rotates relative to the supporting frame, the locking piece and the locking groove can be connected in a clamped mode, when the swing arm and the supporting frame need to be locked, the locking piece and the locking groove can be connected in a clamped mode, and therefore the stable locking effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of children's chair technology, and specifically refers to a locking structure for a children's dining chair. Background Technology

[0002] Currently, children's swings and high chairs have become necessities in a child's growth. To save costs, existing swing high chairs can be switched between swing and high chair functions. This means users can switch them from a swing for children's play to a high chair. However, this conversion requires multiple steps, and most existing swing high chairs lack a reliable locking mechanism. This design flaw means users may face potential safety risks due to accidental misoperation. While some swing high chairs do have locking mechanisms, these are often quite complex, increasing production costs and causing inconvenience for users. Summary of the Invention

[0003] The purpose of this invention is to provide a locking structure for a children's high chair that is simple in structure, easy to operate, highly safe, and can effectively prevent accidental operation.

[0004] The purpose of this utility model is achieved as follows:

[0005] A locking structure for a children's high chair includes a support frame, a swing arm, and a seat body. The seat body is mounted on the swing arm, and the upper end of the swing arm is rotatably connected to the upper end of the support frame. A locking device is provided between the lower end of the swing arm and the support frame. The locking device includes a locking seat movably mounted on the support frame and a locking member mounted on the swing arm. The locking seat is located at the lower end of the support frame and can move up and down relative to the support frame. The locking member is located at the lower end of the swing arm. A locking groove is formed on the locking seat, and the locking groove is located on the path of the locking member's rotation relative to the support frame. The locking member and the locking groove can be engaged with each other. When the swing arm needs to be fixed to the support frame, the swing arm is first driven forward, and then the locking seat is driven. The locking seat moves along the direction of the support frame until the locking groove is located on the path of the locking member's retraction. The swing arm is then lowered, and the swing arm rotates backward until the locking member and the locking groove are engaged to complete the locking.

[0006] Furthermore, the sliding bar is provided with a first guide portion, and the locking seat is provided with a guide hole. The first guide portion passes through the guide hole and can move relative to the guide hole.

[0007] Furthermore, the locking groove includes a connecting hole and a locking hole, and the locking component includes a locking block and a connecting rod. The connecting hole is larger than the connecting rod and smaller than the locking block. Both the connecting hole and the locking hole are larger than the connecting rod. The locking block and the connecting rod are respectively engaged into the connecting hole and the locking hole by the sides of the connecting hole and the locking hole.

[0008] Furthermore, the upper end of the sliding bar is provided with a guide block, the lower end of the first elastic element is sleeved on the guide block, and the upper end of the locking groove is provided with a guide plate, which is located on both sides of the upper end of the first elastic element.

[0009] Furthermore, the upper end of the locking seat is provided with an anti-slip part, and the anti-slip part is provided with several protrusions.

[0010] Furthermore, an adjustment assembly is provided between the swing arm and the seat body. One end of the adjustment assembly is connected to the seat body, and the other end of the adjustment assembly is connected to the swing arm. The adjustment assembly is provided with a connecting sleeve and a first snap-fit ​​part. The connecting sleeve is fitted onto the swing arm. A second snap-fit ​​part is provided on the side of the seat body. The first snap-fit ​​part and the second snap-fit ​​part are snapped together. The seat body is connected to the adjustment assembly through the second snap-fit ​​part.

[0011] Furthermore, the adjustment assembly includes a connecting shell and an adjustment member disposed within the connecting shell. The connecting sleeve and the first snap-fit ​​part are both disposed on the connecting shell. The swing arm has a plurality of adjustment holes. The adjustment member is provided with a snap-fit ​​block. The snap-fit ​​part and the adjustment hole directly snap-fit ​​each other. Driving the adjustment member can drive the snap-fit ​​block to snap into different adjustment holes, thereby adjusting the position of the seat body relative to the swing arm.

[0012] Furthermore, the adjusting member is provided with a driving member that can drive the adjusting member. The driving member is provided with a driving part. The adjusting member has a transmission hole in the middle. The driving part passes through the transmission hole. The front end of the transmission hole has a first inclined surface. The front end of the driving part has a second inclined surface. The first inclined surface and the second inclined surface abut against each other, driving the driving member to move upward. The driving part moves upward along the first inclined surface and moves the adjusting member forward, causing the locking block to disengage from the adjusting hole.

[0013] Furthermore, the upper end of the driving member is provided with a second guide portion, and a second elastic member is provided between the second guide portion and the connecting shell. When the driving member moves upward, the second elastic member contracts upward. When the compression is released, the second elastic member resets and drives the driving member to reset. The rear end of the adjusting member is provided with a third guide portion, and a third elastic member is provided between the third guide portion and the connecting shell. When the adjusting member moves forward, the second elastic member contracts forward. When the compression is released, the third elastic member resets and drives the adjusting member to reset.

[0014] Furthermore, the front end of the connecting shell is provided with a limiting member, which is located at the rear end of the adjusting member. The rear end of the adjusting member is provided with a limiting part, which abuts against the limiting member to restrict the position of the adjusting member.

[0015] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0016] The purpose of this utility model is to provide a seating device with a simple structure, convenient operation, high safety, and effective prevention of misoperation. The device mainly comprises three parts: a support frame, a swing arm, and a seat body. The seat body is mounted on the swing arm, and the upper end of the swing arm is rotatably connected to the upper end of the support frame. A locking device is provided between the swing arm and the support frame to ensure stability and safety between them. The locking device is located at the lower end of the swing arm and the support frame, ensuring a stable connection between them during use. The locking device includes a locking seat movably mounted on the support frame and a locking element mounted on the swing arm. The locking seat is located at the lower end of the support frame and can move vertically relative to the support frame. Located at the lower end of the swing arm, the locking seat has a locking groove. The locking groove is located on the path of the locking member's rotation relative to the support frame. The locking member and the locking groove can be engaged with each other. When it is necessary to lock the swing arm and the support frame, the locking member and the locking groove can be engaged with each other to achieve a stable locking effect. The specific operation steps are as follows: First, drive the swing arm to move forward, then drive the locking seat to move along the direction of the support frame until the locking groove is located on the path of the locking member's retraction. Next, lower the swing arm and rotate it backward until the locking member and the locking groove are engaged with each other. This completes the entire locking process, ensuring the safety of the locking device and greatly enhancing its stability, providing a reliable guarantee for the long-term use of the equipment. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0019] Figure 3 This is a structural diagram of the present invention with the main seat removed.

[0020] Figure 4 This is a structural schematic diagram of the main body of the seat of this utility model.

[0021] Figure 5 This is a schematic diagram of the connection structure of the support frame, swing arm and locking device of this utility model.

[0022] Figure 6 This is a structural schematic diagram of the support frame and locking device of this utility model.

[0023] Figure 7 This is a structural schematic diagram of the swing arm and locking component of this utility model.

[0024] Figure 8 This is a structural schematic diagram of the locking component of this utility model.

[0025] Figure 9 This is one of the schematic diagrams of the connection structure between the locking seat and the sliding bar of this utility model.

[0026] Figure 10 This is the second schematic diagram of the connection structure between the locking seat and the sliding bar of this utility model.

[0027] Figure 11 This is a structural schematic diagram of the locking seat of this utility model.

[0028] Figure 12 This is a schematic diagram of the connection structure of the support frame and adjustment components of this utility model.

[0029] Figure 13 This is a schematic diagram of the structure of the adjustment component of this utility model.

[0030] Figure 14 This is a schematic diagram of the connection structure between the adjusting component and the driving part of this utility model.

[0031] Figure 15 This is a schematic diagram of the drive unit structure of this utility model.

[0032] Figure 16 This is a schematic diagram of the structure of the adjusting component of this utility model.

[0033] The meaning of the labels in the diagram:

[0034] 1-Support frame; 2-Swing arm; 3-Seat body; 4-Locking device; 5-Locking seat; 6-Locking component;

[0035] 7-Locking groove; 8-Sliding bar; 9-First elastic element; 10-First guide part; 11-Guide hole; 12-Connecting hole;

[0036] 13-Locking hole; 14-Locking block; 15-Connecting rod; 16-Guide block; 17-Guide plate; 19-Anti-slip part;

[0037] 20-Second snap-fit ​​part; 21-First snap-fit ​​part; 23-Connecting shell; 24-Connecting sleeve; 25-Adjusting component;

[0038] 26-Driver; 27-Drive unit; 28-Second elastic member; 29-Third elastic member; 30-Third guide unit;

[0039] 31-Limiting component; 32-Snap-fit ​​block; 33-Adjusting hole; 34-Second guide part; 35-Limiting part; 36-Sliding groove;

[0040] 37-Transmission hole. Detailed Implementation

[0041] The present invention will be further described below with reference to specific embodiments:

[0042] A rocking structure for a children's high chair includes a support frame 1, a rocker arm 2, and a seat body 3. The seat body 3 is mounted on the rocker arm 2. The upper end of the rocker arm 2 is rotatably connected to the upper end of the support frame 1. A locking device 4 is provided between the lower end of the rocker arm 2 and the support frame 1. The locking device 4 includes a locking seat 5 movably mounted on the support frame 1 and a locking member 6 mounted on the rocker arm 2. The locking seat 5 is located at the lower end of the support frame 1 and can move up and down relative to the support frame 1. The locking member 6 is located on the rocker arm. At the lower end of 2, the locking seat 5 has a locking groove 7. The locking groove 7 is located on the path of the locking member 6 rotating relative to the support frame 1. The locking member 6 and the locking groove 7 can be engaged with each other. When the swing arm 2 and the support frame 1 need to be fixed, the swing arm 2 is first driven to move forward, and then the locking seat 5 is driven. The locking seat 5 moves along the direction of the support frame 1 until the locking groove 7 is located on the path of the locking member 6 retracting. The swing arm 2 is then lowered, and the swing arm 2 rotates backward until the locking member 6 and the locking groove 7 are engaged with each other to complete the locking.

[0043] The purpose of this utility model is to provide a seating device with a simple structure, convenient operation, high safety, and effective prevention of misoperation. The device mainly includes three parts: a support frame 1, a swing arm 2, and a seat body 3. The seat body 3 is mounted on the swing arm 2, and the upper end of the swing arm 2 is rotatably connected to the upper end of the support frame 1. A locking device 4 is provided between the swing arm 2 and the support frame 1 to ensure the stability and safety of the connection. The locking device 4 is located at the lower end of the swing arm 2 and the support frame 1, ensuring a stable connection between the swing arm 2 and the support frame 1 during use. The locking device 4 includes a locking seat 5 movably mounted on the support frame 1 and a locking element 6 mounted on the swing arm 2. The locking seat 5 is located at the lower end of the support frame 1 and can move up and down relative to the support frame 1. The locking element 6 is located at the lower end of the swing arm 2. The locking seat 5 has a locking groove 7, which is located on the path of the locking element 6 rotating relative to the support frame 1. The locking element 6 and the locking groove 7 can be engaged with each other. When it is necessary to lock the swing arm 2 and the support frame 1, the locking element 6 and the locking groove 7 can be engaged with each other to achieve a stable locking effect. The specific operation steps are as follows: First, drive the swing arm 2 to move forward, and then drive the locking seat 5 to move along the direction of the support frame 1 until the locking groove 7 is located on the path of the locking element 6 retracting. Then, lower the swing arm 2 and rotate the swing arm 2 backward to the position where the locking element 6 and the locking groove 7 are engaged with each other. This completes the entire locking process, ensuring the safety of the locking device 4 and greatly enhancing its stability, providing a reliable guarantee for the long-term use of the equipment.

[0044] Preferably, the support frame 1 is provided with a sliding bar 8, and the locking seat is provided with a sliding groove 36. The sliding groove 36 can rotate up and down relative to the sliding bar 8, thereby driving the locking seat 5 to move up and down relative to the support frame 1, realizing the function of the locking seat 5 moving up and down relative to the support frame 1. This structural design not only ensures the stability and reliability of the device, but also improves the flexibility and convenience of operation. The sliding bar 8 is provided with a first guide part 10, which ensures that the sliding bar 8 can move smoothly and accurately during use. The locking seat 5 is provided with a guide hole 11, and the first guide part 10 passes through the guide hole 11 and can move relative to the guide hole 11. This not only ensures the stability and positioning accuracy of the sliding bar 8, but also greatly improves the operational flexibility and convenience of the entire device, allowing users to obtain a smoother and more precise experience during use.

[0045] Preferably, the locking groove 7 includes a connecting hole 12 and a locking hole 13, and the locking member 6 includes a locking block 14 and a connecting rod 15. The connecting hole 12 is larger than the connecting rod 15, and the size of the connecting hole 12 is designed to be larger than the size of the connecting rod 15 to ensure that the connecting rod 15 can be smoothly inserted into the connecting hole 12, while the locking block 14 cannot pass through the connecting hole 12. The connecting hole 12 is smaller than the locking block 14, and both the connecting hole 12 and the locking hole 13 are larger than the connecting rod 15. 4 and connecting rod 15 are respectively engaged into connecting hole 12 and locking hole 13 by the sides of connecting hole 12 and locking hole 13. When locking block 14 and connecting rod 15 are engaged into the corresponding holes, sufficient friction and resistance can be provided to ensure that they will not easily slip out or loosen. Locking block 14 and connecting rod 15 are respectively engaged into connecting hole 12 and locking hole 13 by the sides of connecting hole 12 and locking hole 13, thereby realizing a firm connection between locking groove 7 and locking member 6.

[0046] Preferably, the upper end of the sliding bar 8 is provided with a first elastic element 9. The upper end of the first elastic element 9 abuts against the upper end of the locking seat 5, and the lower end abuts against the upper end of the sliding bar 8. During the unlocking process, the drive arm 2 will rotate forward, which will cause the locking member 6 to disengage from the locking groove 7. Once the unlocking action is completed, the first elastic element 9 will rebound due to its own elastic properties, thereby pushing the locking seat 5 back to its initial position, achieving reset. The completion of this series of actions ensures the smooth operation of the entire unlocking mechanism, while also demonstrating the ingenuity of the design and improving the efficiency and convenience of operation. The upper end of the sliding bar 8 is provided with a guide block 16, and the lower end of the first elastic element 9 is sleeved on the guide block 16. When the first elastic element 9 is subjected to external force, it can effectively reduce unnecessary displacement and ensure that the first elastic element 9 remains stable during use. The upper end of the locking groove 7 is provided with a guide plate 17, which is located on both sides of the upper end of the first elastic element 9, enhancing the stability of the upper end of the first elastic element 9 and making the first elastic element 9 slide more smoothly on the sliding bar 8. The presence of the guide plate 17 can not only effectively guide the first elastic element 9 to slide smoothly on the sliding bar 8, but also ensure that the function of the locking groove 7 is fully utilized, thereby improving the performance and reliability of the entire device.

[0047] Preferably, the upper end of the locking seat 5 is provided with a pressing part, and the pressing part is provided with an anti-slip part 19. The anti-slip part 19 is provided with a number of protrusions. These protrusions can effectively increase the contact area with the user's fingers, thereby reducing the possibility of slippage. This allows the locking seat 5 to maintain good anti-slip performance in various usage environments, thereby improving the overall user experience.

[0048] Preferably, an adjustment assembly is provided between the swing arm 2 and the seat body 3. One end of the adjustment assembly is connected to the seat body 3, and the other end is connected to the swing arm 2. The adjustment assembly is provided with a connecting sleeve 24 and a first locking part 21. The connecting sleeve 24 is fitted onto the swing arm 2. A second locking part 20 is provided on the side of the seat body 3. The first locking part 21 and the second locking part 20 are locked together. The seat body 3 is connected to the adjustment assembly through the second locking part 20. The adjustment of the seat body 3 can be achieved by changing the relative position between the second locking part 20 and the adjustment assembly or the relative position between the adjustment assembly and the swing arm 2, thereby allowing users to adjust the position and angle of the seat according to their personal needs to achieve the best comfort and support effect.

[0049] Preferably, the adjustment assembly includes a connecting shell 23 and an adjustment component 25 disposed within the connecting shell 23. The connecting sleeve 24 and the first locking part 21 are both disposed on the connecting shell 23. The swing arm 2 has several adjustment holes 33, providing multiple possible position points for seat adjustment, allowing users to select the most suitable seat position according to their individual needs. The adjustment component 25 has a locking block 32, which directly engages with the adjustment holes 33. Driving the adjustment component 25 can cause the locking block 32 to engage with different adjustment holes 33, thereby adjusting the position of the seat body 3 relative to the swing arm 2. Users can easily engage the locking block 32 into different adjustment holes 33 to adjust the position of the seat body 3 relative to the swing arm 2. This not only improves the adaptability of the seat but also simplifies the adjustment process, allowing users to quickly and accurately adjust the seat to the most comfortable position. Furthermore, this design ensures the stability and reliability of the adjustment process, thereby extending the service life of the seat.

[0050] Preferably, the adjusting member 25 is provided with a driving member 26 that can drive the adjusting member 25. The driving member 26 is provided with a driving part 27. The adjusting member 25 has a transmission hole 37 in the middle. The driving part 27 passes through the transmission hole 37. The front end of the transmission hole 37 has a first inclined surface, and the front end of the driving part 27 has a second inclined surface. The first inclined surface and the second inclined surface abut against each other. When the driving member 26 is driven to move upward, the second inclined surface of the driving part 27 will slide upward along the first inclined surface at the front end of the transmission hole 37 of the adjusting member 25. This interaction force between the inclined surfaces enables the driving part 27 to drive the adjusting member 25 to move forward, thereby releasing the locking state between the locking block 32 on the adjusting member 25 and the adjusting hole 33. The adjusting member 25 can be precisely adjusted to the required position, thereby achieving the purpose of adjustment.

[0051] Preferably, the upper end of the driving member 26 is provided with a second guide portion 34, and a second elastic member 28 is provided between the second guide portion 34 and the connecting shell 23. When the driving member 26 needs to move upward, the second elastic member 28 will be squeezed and deformed, that is, contracted upward, thereby allowing the driving member 26 to move smoothly. When the driving member 26 moves to the designated position, once the squeezing of the second elastic member 28 is released, it will quickly return to its original shape using its own elastic force. This recovery action will drive the driving member 26 to reset as well. The rear end of the adjusting member 25 is provided with a third guide portion 30, and a third elastic member 29 is provided between the third guide portion 30 and the connecting shell 23. When the adjusting member 25 moves forward, the second elastic member 28 contracts forward. When the squeezing is released, the third elastic member 29 resets and drives the adjusting member 25 to reset, so that when the adjusting member 25 needs to move forward, the second elastic member 28 will correspondingly contract forward, thereby allowing the adjusting member 25 to move. When the external pressure is released, the third elastic element 29 will automatically reset, and this reset action will drive the adjusting element 25 back to its original position.

[0052] Preferably, the front end of the connecting shell 23 is provided with a limiting member 31, which is located at the rear end of the adjusting member 25. The rear end of the adjusting member 25 is provided with a limiting part 35, which abuts against the limiting member 31. The limiting part 35 and the front limiting member 31 abut against each other, thereby effectively limiting and fixing the position of the adjusting member 25 and ensuring that the adjusting member 25 has a clear stopping point when adjusting its position.

[0053] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A locking structure of a child dining chair, characterized by comprising: The utility model provides a seat, including support frame (1), swing arm (2) and seat body (3), seat body (3) is located swing arm (2), swing arm (2) upper end is connected with support frame (1) upper end rotation, swing arm (2) lower end with support frame (1) between being equipped with locking device (4), locking device (4) includes mobile and be equipped with locking seat (5) on support frame (1) and be equipped with locking piece (6) on swing arm (2), locking seat (5) is equipped with support frame (1) lower end, and can be relative support frame (1) up and down movement, locking piece (6) is equipped with swing arm (2) lower end, locking seat (5) is set up locking groove (7), locking groove (7) is located locking piece (6) relative support frame (1) rotation's path, locking piece (6) with locking groove (7) between can be mutually clamped, swing arm (2) with support frame (1) between needing to be fixed, first drive swing arm (2) to move forward, then drive locking seat (5), locking seat (5) moves to locking groove (7) in the direction of support frame (1) and is located locking piece (6) back-off path, lower swing arm (2), swing arm (2) is rotated to locking piece (6) and locking groove (7) mutually clamped and completes locking back.

2. A locking arrangement for a child's dining chair according to claim 1, wherein: Support frame (1) is equipped with sliding bar (8), locking seat (5) is equipped with sliding groove (36), sliding groove (36) can be relative sliding bar (8) up and down activity, to drive locking seat (5) relative support frame (1) up and down movement, sliding bar (8) is equipped with first guide portion (10), locking seat (5) is set up guide hole (11), first guide portion (10) is worn in guide hole (11), and can be relative guide hole (11) activity.

3. The locking structure of claim 1, wherein: Locking groove (7) includes connecting hole (12) and locking hole (13), locking piece (6) includes locking block (14) and connecting rod (15), connecting hole (12) is greater than connecting rod (15), connecting hole (12) is less than locking block (14), connecting hole (12) and locking hole (13) are all greater than connecting rod (15), and locking block (14) and connecting rod (15) are clamped into connecting hole (12) and locking hole (13) from the side of connecting hole (12) and locking hole (13) respectively.

4. The locking structure of claim 2, wherein: The upper end of the sliding bar (8) is provided with a first elastic element (9), the upper end of the first elastic element (9) abuts against the upper end of the locking seat (5), the lower end abuts against the upper end of the sliding bar (8), when unlocking, the swing arm (2) is driven to rotate forward, the locking piece (6) is separated from the clamping of the locking groove (7), the first elastic element (9) is reset to the locking seat (5), the upper end of the sliding bar (8) is provided with a guide block (16), the lower end of the first elastic element (9) is sleeved on the guide block (16), the upper end in the locking groove (7) is provided with a guide plate (17), and the guide plate (17) is located on both sides of the upper end of the first elastic element (9).

5. A locking arrangement for a child's dining chair according to any one of claims 1 to 4, wherein: The upper end of the locking seat (5) is provided with a pressing part, the pressing part is provided with an anti-skid part (19), and the anti-skid part (19) is provided with a plurality of protrusions.

6. The locking structure of claim 1, wherein: The swing arm (2) and the seat body (3) are provided with an adjusting assembly, one end of the adjusting assembly is connected with the seat body (3), the other end of the adjusting assembly is connected with the swing arm (2), the adjusting assembly is provided with a connecting sleeve (24) and a first clamping part (21), the connecting sleeve (24) is sleeved on the swing arm (2), the side surface of the seat body (3) is provided with a second clamping part (20), the first clamping part (21) and the second clamping part (20) are clamped with each other, and the seat body (3) is connected with the adjusting assembly through the second clamping part (20).

7. A locking arrangement for a child's dining chair according to claim 6 wherein: The adjusting assembly comprises a connecting shell (23) and an adjusting piece (25) arranged in the connecting shell (23), the connecting sleeve (24) and the first clamping part (21) are arranged on the connecting shell (23), a plurality of adjusting holes (33) are formed in the swing arm (2), the adjusting piece (25) is provided with a clamping block (32), the clamping block (32) and the adjusting hole (33) are clamped with each other, and the driving of the adjusting piece (25) can drive the clamping block (32) to be clamped in different adjusting holes (33), so that the position of the seat body (3) relative to the swing arm (2) is adjusted.

8. A locking arrangement for a child's dining chair according to claim 7, wherein: The adjusting piece (25) is provided with a driving piece (26) capable of driving the adjusting piece (25), the driving piece (26) is provided with a driving part (27), the middle part of the adjusting piece (25) is provided with a transmission hole (37), the driving part (27) is arranged in the transmission hole (37), the front end of the transmission hole (37) is provided with a first inclined surface, the front end of the driving part (27) is provided with a second inclined surface, the first inclined surface and the second inclined surface abut with each other, the driving part (27) moves upward along the first inclined surface and drives the adjusting piece (25) to move forward, and the clamping block (32) is separated from the clamping of the adjusting hole (33).

9. A locking arrangement for a child's dining chair according to claim 8, wherein: The upper end of the driving piece (26) is provided with a second guide part (34), the second guide part (34) and the connecting shell (23) are provided with a second elastic piece (28), the second elastic piece (28) is contracted upward when the driving piece (26) moves upward, and the second elastic piece (28) is reset to drive the driving piece (26) to reset when the extrusion is released, the rear end of the adjusting piece (25) is provided with a third guide part (30), the third guide part (30) and the connecting shell (23) are provided with a third elastic piece (29), the second elastic piece (28) is contracted forward when the adjusting piece (25) moves forward, and the third elastic piece (29) is reset to drive the adjusting piece (25) to reset when the extrusion is released.

10. A locking arrangement for a child's dining chair according to claim 9, wherein: The front end of the connecting shell (23) is provided with a limiting piece (31), the limiting piece (31) is located at the rear end of the adjusting piece (25), the rear end of the adjusting piece (25) is provided with a limiting part (35), the limiting part (35) and the limiting piece (31) abut with each other, and the position of the adjusting piece (25) is limited.

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