Table plate lifting adjusting device for calling chair

Abstract

The utility model provides a table plate lifting adjusting device for a calling chair, and belongs to the technical field of child dining chairs. The seat comprises a seat body and adjusting rods arranged on the two sides of a table board, adjusting seats are arranged on the two sides of the seat body, sliding holes for the adjusting rods to slide up and down are formed in the adjusting seats, mounting holes penetrating through the sliding holes are formed in the adjusting seats, a plurality of locking grooves are formed in the side walls of the adjusting rods, and the locking grooves are matched with the locking grooves. And when the adjusting rod slides along the sliding hole, the lock grooves sequentially pass through the mounting holes, a lock cover is arranged on the adjusting seat in a covering mode, a lock disc rotating in a reset mode through a torsional spring is arranged on one side of the lock cover, and locking blocks matched with the lock grooves are arranged on the side face of the lock disc. The baby stroller has the advantages of being stable in height adjustment, not prone to being touched by a baby by mistake, safer to use and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of children's dining chairs, in particular to a table top lifting and adjusting device for a dining chair. Background Art

[0002] A "Calling Chair" is a dining chair for children. It caters to modern child education concepts, facilitating children's dining while fostering an interest in eating. It helps children transition from being fed by their parents to dining with their family, fostering good dining habits. The chair's surface emits a whistle when children sit on it, so the "Calling Chair" not only helps babies develop the habit of eating in a dining chair, eliminating the hassle of having to chase after their parents to feed them, but also helps babies sit in a chair that fits them, preventing them from stumbling around due to instability. It frees their hands to grasp tableware and helps them develop hand-eye coordination and brain coordination.

[0003] To facilitate height adjustment, the tabletops on the market are typically designed with sliding tabs at both ends, allowing for height adjustment. However, these adjustable features are often relatively simple, making it easy for babies to accidentally raise or lower the tabletop, posing a safety hazard. Summary of the Invention

[0004] The purpose of the utility model is to provide a table top lifting and adjusting device for a baby chair, which has stable lifting and adjusting properties and is not easy for babies to touch by mistake, thus ensuring safe use.

[0005] The purpose of this utility model is achieved in this way:

[0006] The cam is secured to the upper and lower ends of the cam, and the cam is secured to the lower ends of the cam when the cam is in a condition of high tension. The cam is secured to the lower ends of the cam, and the cam is secured to the lower ends of the cam when the cam is in a condition of high tension.

[0007] The utility model is further configured such that locking grooves are provided on the upper and lower side walls of the adjusting rod, and the locking grooves on both sides are mirror-imaged; two locking blocks are provided on one side of the locking disk, and the two locking blocks are provided at both ends of one side of the locking disk; when the locking disk is rotated, the two locking blocks simultaneously disengage from the corresponding locking grooves on both sides of the adjusting rod.

[0008] The present invention is further configured such that a fixing hole for fixing one end of the torsion spring is formed on the inner side surface of the lock cover.

[0009] The present invention is further configured such that a knob groove is provided in the middle of the outer side surface of the lock cover, a through hole is provided at the bottom of the knob groove, a knob is provided in the knob groove, a rotary column is formed on the inner side of the knob and passes through the through hole, and an abutment protrusion is formed in the middle of the outer side surface of the lock disk. When the knob is installed in the knob groove, the end of the rotary column abuts against the protrusion, and when the knob is turned, the rotary column drives the lock disk to rotate.

[0010] The present invention is further configured such that a limiting protrusion is provided on the outer edge of the lock disk, and a limiting stopper is provided on the inner side surface of the lock cover. When the knob is rotated to a maximum angle, the limiting stopper abuts against the limiting protrusion.

[0011] The utility model is further configured such that the locking groove is triangular in shape, the locking block is fan-shaped, and a triangular-shaped insert that matches the locking groove is formed on one side of the locking block.

[0012] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0013] 1. The lifting and adjusting device provided by the present invention controls the lifting and lowering of the adjusting rod by rotating the side end, which is not easy for babies to touch it accidentally. At the same time, when the torsion spring is in the reset state, the locking block can be firmly embedded in the lock groove, so that the adjusting rod is not easy to shake, ensuring safe use.

[0014] 2. The present invention further adopts the method of providing locking grooves on both sides of the adjusting rod, and providing two locking blocks adapted to the locking grooves on the lock disk, which can enhance stability when locking.

[0015] 3. The utility model further provides a knob that can facilitate the rotation of the lock disk, making it convenient to perform locking and unlocking operations.

[0016] 4. The limit block further provided in the present invention enables the lock disk to rotate within a reasonable range, thereby ensuring the service life of the torsion spring.

[0017] 5. The lock slot and the locking block provided by the present invention have a triangular shape that can be adapted to each other, which can not only better fit and improve the locking effect when locking, but also allow the locking block to be quickly embedded in the lock slot when the adjusting rod is raised and lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the explosion diagram of the utility model Figure 1 ;

[0019] Figure 2 This is the explosion diagram of the utility model Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the calling chair in which the utility model is located;

[0021] Reference numerals:

[0022] 1- Seat body;

[0023] 2-table top; 20-adjustment lever; 21-locking slot;

[0024] 3-Adjustment seat; 30-Sliding hole; 31-Mounting hole;

[0025] 4-locking cover; 40-fixing hole; 41-knob slot; 42-through hole; 43-limit stopper;

[0026] 5-torsion spring;

[0027] 6-locking plate; 60-locking block; 61-abutting protrusion; 62-limiting protrusion; 63-embedded block;

[0028] 7-knob; 70-rotor. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1 — Figure 3 :

[0030] When the locking plate 6 overcomes the torsion force of the torsion spring 5 and rotates, the locking block 60 is no longer embedded in the locking slot 21, and the adjusting rod 20 can slide freely up and down along the sliding hole 30.

[0031] During implementation, the adjustment rods 20 at both ends of the table top 2 can be detachable or integrally formed with the table top 2. The adjustment rod 20 is inserted into the sliding hole 30 of the adjustment seat 3, and the adjustment rod 20 can slide freely up and down in the sliding hole 30. A mounting hole 31 is provided on the adjustment seat 3. The mounting hole 31 is for the convenience of installing the lock cover. The lock cover is fixed at the edge of the mounting hole. The lock disk can be rotated to a certain extent by a torsion spring that can be reset. A lock slot 21 is provided on the adjustment rod 20 so that the locking block 60 on the lock disk can be embedded in the lock slot and disengaged during the rotation process. During the process of rotating to unlock, the locking block 60 and the lock slot 21 are both in the mounting hole 31 during the locking process. In addition, the rotating lock disk 6 can be reset under the action of the torsion spring, so that it maintains the state of allowing the locking block 60 to be embedded in the lock slot 21.

[0032] It is worth mentioning that because there are two adjustment rods 20, located at both ends of the table top, in actual operation, both ends need to be rotated to allow the table top to rise or fall horizontally. This method can further prevent the baby from accidentally touching the table top, ensuring safe use.

[0033] Preferably, the upper and lower side walls of the adjusting rod 20 are both provided with locking grooves 21, and the locking grooves 21 on both sides are mirror-imaged. Two locking blocks 60 are provided on one side of the locking disk 6, and the two locking blocks 60 are provided at both ends of one side of the locking disk 6. When the locking disk 6 is rotated, the two locking blocks 60 simultaneously disengage from the corresponding locking grooves 21 on both sides of the adjusting rod 20.

[0034] During implementation, the locking grooves 21 are set on both sides of the adjusting rod 20. Each time the adjusting rod is inserted for locking and fixing, the two locking blocks 60 are adapted to the two locking grooves 21, so that the adjusting rod is more stable during the locking process and is not prone to slipping.

[0035] Preferably, a fixing hole 40 for fixing one end of the torsion spring 5 is formed on the inner side surface of the locking cover 4, so as to facilitate the fixing of the end of the torsion spring.

[0036] Preferably, a knob groove 41 is provided in the middle of the outer side surface of the lock cover 4, a through hole 42 is provided at the bottom of the knob groove 41, a knob 7 is provided in the knob groove 41, a rotary column 70 passing through the through hole 42 is formed on the inner side of the knob 7, and an abutment protrusion 61 is formed in the middle of the outer side surface of the lock disk 6. When the knob 7 is installed in the knob groove 41, the end of the rotary column 70 abuts against the protrusion 61, and when the knob 7 is rotated, the rotary column 70 drives the lock disk 6 to rotate.

[0037] During operation, the user rotates the knob 7, which drives the rotating post to rotate. The rotating post abuts the protrusion 61 and causes the lock disk to rotate. The rotation of the lock disk drives the locking block 60 to no longer fit into the lock groove 21. This operation is more convenient and is located on the outside, so that babies are not likely to touch it by mistake.

[0038] Preferably, a limiting protrusion 62 is provided on the outer edge of the lock disk 6 , and a limiting block 43 is provided on the inner side of the lock cover 4 . When the knob 7 is rotated to the maximum angle, the limiting block 43 abuts against the limiting protrusion 62 .

[0039] In the above structure, the limiting block 43 can counteract the limiting protrusion 62 to achieve a certain rotation range, so that the torsion spring is in a reasonable torsion range, thereby ensuring the service life of the torsion spring.

[0040] Preferably, the locking groove 21 is triangular in shape, the locking block 60 is fan-shaped, and a triangular insert 63 that matches the locking groove 21 is formed on one side of the locking block 60 .

[0041] During implementation, the locking slot and the locking block have a matching triangular shape, which not only can better fit and improve the locking effect when locking, but also can quickly allow the locking block to be embedded in the lock slot when the adjusting rod is raised and lowered.

[0042] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A table top lifting and adjusting device for a chair, comprising a chair body (1), characterized in that: The invention comprises an adjusting rod (20) arranged on both sides of a table top (2), an adjusting seat (3) is arranged on both sides of the chair body (1), and a sliding hole (30) for the adjusting rod (20) to slide up and down is provided in the adjusting seat (3), a mounting hole (31) penetrating the sliding hole (30) is provided in the adjusting seat (3), a plurality of locking grooves (21) are provided on the side wall of the adjusting rod (20), and when the adjusting rod (20) slides along the sliding hole (30), the plurality of locking grooves (21) are locked. The upper cover of the adjustment seat (3) is provided with a locking cover (4) passing through the mounting hole (31) in sequence. A locking disk (6) is provided on one side of the locking cover (4) and is reset and rotated by a torsion spring (5). A locking block (60) adapted to the locking groove (21) is provided on the side of the locking disk (6). When the locking disk (6) overcomes the torsion force of the torsion spring (5) and rotates, the locking block (60) is no longer embedded in the locking groove (21), and the adjustment rod (20) slides freely up and down along the sliding hole (30).

2. The table top lifting and adjusting device for a chair according to claim 1, characterized in that: The upper and lower side walls of the adjusting rod (20) are both provided with locking grooves (21), and the locking grooves (21) on both sides are arranged in a mirror image. One side of the locking disk (6) is provided with two locking blocks (60), and the two locking blocks (60) are arranged at both ends of one side of the locking disk (6). When the locking disk (6) is rotated, the two locking blocks (60) are simultaneously disengaged from the corresponding locking grooves (21) on both sides of the adjusting rod (20).

3. A table top lifting and adjusting device for a bar chair according to claim 1 or 2, characterized in that: The inner side surface of the locking cover (4) is formed with a mounting hole (40) for fixing one end of the torsion spring (5).

4. A table top lifting and adjusting device for a chair according to claim 1 or 2, characterized in that: The outer side surface of the lock cover (4) is provided with a knob groove (41), the bottom of the knob groove (41) is provided with a through hole (42), a knob (7) is provided in the knob groove (41), the inner side of the knob (7) is formed with a rotary column (70) passing through the through hole (42), and the middle part of the outer side surface of the lock disk (6) is formed with an abutting protrusion (61), when the knob (7) is installed in the knob groove (41), the end of the rotary column (70) abuts against the protrusion (61), and when the knob (7) is rotated, the rotary column (70) drives the lock disk (6) to rotate.

5. The table top lifting and adjusting device for a bar chair according to claim 4, characterized in that: A limiting protrusion (62) is provided on the outer edge of the lock disk (6), and a limiting block (43) is provided on the inner side of the lock cover (4). When the knob (7) is rotated to a maximum angle, the limiting block (43) abuts against the limiting protrusion (62).

6. The table top lifting and adjusting device for a chair according to claim 1 or 2, characterized in that: The locking groove (21) is triangular in shape, the locking block (60) is fan-shaped, and a triangular-shaped insert (63) that matches the locking groove (21) is formed on one side of the locking block (60).

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