Safe child dining chair convenient to open by single hand

Abstract

The utility model relates to the technical field of casters, in particular to a child dining chair which comprises a seat for a child to sit in for dining, dining chair supports for supporting the seat are hinged to the two sides of the seat, a backrest is arranged on the upper side of the rear portion of the seat, and a foot pad is arranged below the front portion of the seat. The dining chair support comprises a front dining chair support and a rear dining chair support, the upper ends of the front dining chair support and the rear dining chair support are hinged to the two sides of the seat, a joint unlocking mechanism is arranged between the front dining chair support and the rear dining chair support, the two sides of the joint unlocking mechanism are locked when the joint unlocking mechanism is unfolded, and the single side of the joint unlocking mechanism is locked when the joint unlocking mechanism is folded. The child dining chair can be folded only by unlocking the two sides with two hands at the same time, and the child dining chair is convenient to open and use, capable of effectively preventing mistaken folding in the using process, safe and reliable.

Description

[Technical field]

[0001] The utility model relates to the technical field of a joint unlocking mechanism for a children's dining chair, in particular to a safe children's dining chair which is convenient to open with one hand. [Background technology]

[0002] Since children's body shapes are different from those of adults, they cannot use ordinary dining chairs when dining. Instead, they need to use children's dining chairs specially tailored for them to assist them in dining with adults and facilitate adults to take care of and feed them. Among various children's dining chairs, foldable children's dining chairs are very convenient to use and carry because they can be opened or folded at any time according to actual needs. Moreover, they are small in size and occupy less space after folding, making them more and more widely used. The prior art usually requires pressing buttons on both sides at the same time to unfold or fold the children's dining chair. When unfolding is required, two hands are required to press the buttons, and other forces are required to push the dining legs open. The buttons must be released again after the dining chair remains in a stable state. Therefore, many inconveniences are caused when adults open the dining chair. [Contents of the utility model]

[0003] In order to overcome the defects of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a new type of joint unlocking mechanism, which makes it very convenient to open the children's dining chair with one hand when in use, and requires both hands to unlock both sides at the same time to fold the children's dining chair. The children's dining chair of this scheme is easy to open and use, effectively prevents misunderstanding of folding during use, and is safe and reliable.

[0004] The utility model is realized by the following technical scheme: a safe children's dining chair that is easy to open with one hand, comprising a seat for children to sit and eat, dining chair brackets for supporting the seat are hinged on both sides of the seat, a backrest is provided on the upper rear side of the seat, and a foot pad is provided on the lower front side, the dining chair bracket comprises a front dining chair bracket and a rear dining chair bracket whose upper ends are hinged to each other and hinged to both sides of the seat, a joint unlocking mechanism is provided between the front dining chair bracket and the rear dining chair bracket, which is locked on both sides when unfolded and locked on one side when folded, so that the children's dining chair can be easily opened with one hand when in use, and both hands need to be unlocked on both sides at the same time to fold the children's dining chair. The children's dining chair of this scheme is easy to open and use, effectively prevents misunderstanding of folding during use, and is safe and reliable.

[0005] Preferably, the joint unlocking mechanism includes a first joint unlocking mechanism and a second joint unlocking mechanism respectively arranged at the hinges on both sides of the front dining chair bracket and the rear dining chair bracket, the first joint unlocking mechanism includes a first joint inner seat arranged at the upper left end of the rear dining chair bracket and a first joint outer seat arranged at the upper left end of the front dining chair bracket, the first joint inner seat and the first joint outer seat are hinged to each other, and a first gear engagement mechanism is provided between the first joint inner seat and the first joint outer seat. The first gear engaging mechanism includes a first locking tooth groove arranged in the first joint inner seat and a first unlocking tooth groove arranged in the first joint outer seat and corresponding to the first locking tooth groove, wherein a first locking tooth groove is arranged between the first locking tooth groove and the first unlocking tooth groove, and a first locking tooth disk is disengaged from the first unlocking tooth groove and slides into the first locking tooth groove when the first joint inner seat and the first joint outer seat rotate relative to each other, and the first locking tooth disk at both ends is respectively inserted into the first locking tooth groove and the first unlocking tooth groove when the first joint inner seat and the first joint outer seat are in a fully opened or fully folded position, a first button groove is arranged on the first joint outer seat and is communicated with the first unlocking tooth groove, a first unlocking button is arranged in the first button groove and is used to push the first locking tooth disk out of the first unlocking tooth groove and enter the first locking tooth groove, and a first reset elastic member is arranged between the first joint inner seat and the first locking tooth disk to press the first locking tooth disk into the first unlocking tooth groove when the first locking tooth is aligned with the first unlocking tooth groove, and the first reset elastic member can be a spring or a spring sheet, so that the first joint unlocking remains stable when the children's dining chair is unfolded and folded into place.

[0006] Preferably, the first locking toothed disc comprises a first locking toothed disc body, the first locking toothed disc body is provided with a first sector-shaped tooth group distributed along the circumference of the first locking toothed disc body, the first sector-shaped tooth group is composed of a plurality of teeth of uniform shape and size, except for the first and last two teeth, the spacing between other adjacent teeth is equal, and a first sector-shaped tooth groove corresponding to the first sector-shaped tooth group is provided on the inner side wall of the first locking tooth groove, so that the first locking toothed disc is clamped between the first locking tooth groove and the first unlocking tooth groove when the first joint unlocking mechanism is unfolded and folded by the first gear engaging mechanism.

[0007] Preferably, the first unlocking button includes a first unlocking button body intersecting in the first locking tooth groove, and the first unlocking button body is provided with a first button pressing portion for applying a pressing force, a first button lifting portion for applying an outward pulling force, and a first pushing support rod extending into the first locking tooth groove to push the first locking tooth disk, so that when it is necessary to unlock the first joint unlocking mechanism, the operator can easily unlock the first joint unlocking mechanism.

[0008] Preferably, the second joint unlocking mechanism includes a second joint inner seat arranged at the upper right end of the rear dining chair bracket and a second joint outer seat arranged at the upper right end of the front dining chair bracket, the second joint inner seat and the second joint outer seat are hinged to each other, and a second gear engaging mechanism is provided between the second joint inner seat and the second joint outer seat. The second gear engaging mechanism includes a second locking tooth groove arranged in the second joint inner seat and a second unlocking tooth groove arranged in the second joint outer seat corresponding to the second locking tooth groove, and a second locking tooth groove is provided between the second locking tooth groove and the second unlocking tooth groove, which disengages from the second unlocking tooth groove and slides into the second locking tooth groove when the second joint inner seat and the second joint outer seat rotate relative to each other, and the two ends are respectively inserted into the second locking tooth groove and the second unlocking tooth groove when the second joint inner seat and the second joint outer seat are fully opened, and the second locking tooth groove of the second joint outer seat is pressed against the second locking tooth groove in the second unlocking tooth groove when it is folded, and the second locking tooth groove of the second joint outer seat is on the second joint outer seat. A second button groove is provided which is communicated with the second unlocking tooth groove. A second unlocking button is provided in the second button groove and is used to push the second locking tooth disc out of the second unlocking tooth groove and into the second locking tooth groove. A second reset elastic member is provided between the second joint inner seat and the second locking tooth disc which presses the second locking tooth disc into the second unlocking tooth groove when the second locking tooth disc is aligned with the second unlocking tooth groove. The second reset elastic member can be a spring or a spring sheet. The second unlocking mechanism ensures that the structure of the children's dining chair remains stable when it is unfolded. After the children's dining chair is folded, the children's dining chair can be opened with one hand next time.

[0009] Preferably, the second locking toothed disc comprises a second locking toothed disc body, on which a second sector-shaped locking tooth group is distributed along the circumference of the second locking toothed disc body, the second sector-shaped locking tooth group is composed of wide and narrow staggered locking teeth, except for the first and last two locking teeth, the spacing between other two adjacent locking teeth is equal, and a second sector-shaped locking tooth groove corresponding to the second sector-shaped locking tooth group is provided on the inner side wall of the second locking tooth groove, so that when the second joint unlocking mechanism is unfolded, the second locking toothed disc is clamped between the second locking tooth groove and the second unlocking tooth groove, and when the second joint unlocking mechanism is folded into place, the second locking toothed disc is pressed into the second locking tooth groove by the second unlocking tooth groove.

[0010] Preferably, the second unlocking button includes a second unlocking button body intersecting in the second locking tooth groove, the second unlocking button body is provided with a second button pressing portion for applying a pressing force, a second button lifting portion for applying an outward pulling force, and a second pushing support rod extending into the second locking tooth groove to push the second locking tooth disk, so that the operator can conveniently unlock the second joint unlocking mechanism when the children's dining chair needs to be folded.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. According to the utility model, a safe children's dining chair that is easy to open with one hand, when unfolding, the operator opens it with one hand and pushes open the dining chair bracket with the other hand, so that the children's dining chair can be used more conveniently. When folding, both hands are required to operate the unlocking button to unlock it. This design can prevent accidental pressing and improve safety during use.

[0013] 2. According to the utility model, a safe children's dining chair that is easy to open with one hand, the operator can pull and press the unlocking button to unlock it. The existing technology uses sliding and pressing unlocking, and fingers may be inserted into the gap, which is prone to accidents. This mechanism can prevent fingers from being squeezed or scratched when opening the button. The unlocking button uses the principle of a lever to unlock it, which is more labor-saving. This mechanism can prevent children from accidentally opening or folding the dining chair, thereby improving safety in use.

[0014] 3. According to the utility model, a safe children's dining chair that is easy to open with one hand, the locking gear plate is an incomplete gear. This structural design enables the middle part and the lower part to be flexibly connected through the close cooperation of the inner joint seat and the outer joint seat, and provides ample space for the relative rotation between the two, thereby ensuring smooth and free movement.

Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0016] Figure 1 The overall structure of the children's dining chair of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The first joint unlocking mechanism of the children's dining chair of the utility model is shown in the folded state Figure 2 ;

[0018] Figure 3 The first joint unlocking mechanism of the children's dining chair of the utility model is shown in the unfolded state Figure 3 ;

[0019] Figure 4 The second joint unlocking mechanism of the children's dining chair of the utility model is shown in the folded state Figure 4 ;

[0020] Figure 5 The second joint unlocking mechanism of the children's dining chair of the utility model is shown in the unfolded state Figure 5 ;

[0021] Figure 6 The explosion diagram of the first joint unlocking mechanism of the children's dining chair of the utility model Figure 6 ;

[0022] Figure 7The explosion diagram of the second joint unlocking mechanism of the children's dining chair of the utility model Figure 7 ;

[0023] Figure 8 The first locking toothed disc of the first joint unlocking mechanism of the children's dining chair of the utility model is shown in FIG. Figure 8 ;

[0024] Fig. 9 The first unlocking tooth groove of the first joint unlocking mechanism of the children's dining chair of the utility model is shown in FIG. Figure 9 ;

[0025] Fig.10 The second locking toothed disc of the second joint unlocking mechanism of the children's dining chair of the utility model is shown in FIG. Figure 10 ;

[0026] Fig.11 The second unlocking tooth groove of the second joint unlocking mechanism of the children's dining chair of the utility model is shown in FIG. Figure 10 one;

[0027] Fig.12 The second joint inner seat of the second joint unlocking mechanism of the children's dining chair of the utility model is shown in FIG. Figure 10 two;

[0028] Fig.13 The first joint inner seat of the first joint unlocking mechanism of the children's dining chair of the utility model is shown in FIG. Figure 10 three;

[0029] Fig.14 The first unlocking button of the first joint unlocking mechanism of the children's dining chair of the utility model is shown in FIG. Figure 10 Four;

[0030] Fig.15 The schematic diagram of the joint outer seat of the first joint unlocking mechanism of the children's dining chair of the utility model Figure 10 five;

[0031] Fig.16 The second unlocking button of the second joint unlocking mechanism of the children's dining chair of the utility model is shown in FIG. Figure 10 six;

[0032] Fig.17 The schematic diagram of the joint outer seat of the second joint unlocking mechanism of the children's dining chair of the utility model Figure 10 seven;

[0033] Fig.18 This is a cross-sectional view of the first joint unlocking mechanism of the children's dining chair of the utility model in the folded state Figure 10 eight;

[0034] Fig.19 This is a cross-sectional view of the first joint unlocking mechanism of the children's dining chair of the utility model in the unfolded state Figure 10;.

[0035] Fig. 20 The cross-sectional view of the second joint unlocking mechanism of the children's dining chair of the utility model is shown in the unfolded state. Figure 2 ten;

[0036] Fig.21 The cross-sectional view of the second joint unlocking mechanism of the children's dining chair of the utility model in the folded state Figure 2 eleven; [Specific implementation method]

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] See also Figures 1 to 21 A children's dining chair 10 includes a seat 11 for children to sit and eat, and dining chair brackets 12 for supporting the seat 11 are hinged on both sides of the seat 11. A backrest 114 is provided on the upper side of the rear of the seat 11, and a foot pad 113 is provided on the lower front. The dining chair bracket 12 includes a front dining chair bracket 121 and a rear dining chair bracket 122, the upper ends of which are hinged to each other and hinged to both sides of the seat 11. A joint unlocking mechanism 13 is provided between the front dining chair bracket 121 and the rear dining chair bracket 122, which is locked on both sides when unfolded and locked on one side when folded, so that the children's dining chair 10 can be easily opened with one hand when in use, and both hands need to be unlocked on both sides at the same time to fold the children's dining chair 10. The children's dining chair 10 of this scheme is easy to open and use, effectively prevents misunderstanding of folding during use, and is safe and reliable.

[0039] Furthermore, as a preferred embodiment of the present invention but not a limitation, the joint unlocking mechanism 13 includes a first joint unlocking mechanism 131 and a second joint unlocking mechanism 132 respectively arranged at the hinges on both sides of the front dining chair bracket 121 and the rear dining chair bracket 122, the first joint unlocking mechanism 131 includes a first joint inner seat 61 arranged at the upper left end of the rear dining chair bracket 122 and a first joint outer seat 21 arranged at the upper left end of the front dining chair bracket 121, the first joint inner seat 61 and the first joint outer seat 21 are hinged to each other, and a first gear engagement mechanism 91 is provided between the first joint inner seat 61 and the first joint outer seat 21. The first gear engaging mechanism 91 includes a first locking tooth groove 611 arranged in the first joint inner seat 61 and a first unlocking tooth groove 211 arranged in the first joint outer seat 21 and corresponding to the first locking tooth groove 611, and a first locking tooth plate 41 is installed between the first locking tooth groove 611 and the first unlocking tooth groove 211, which disengages from the first unlocking tooth groove 211 and slides into the first locking tooth groove 611 when the first joint inner seat 61 and the first joint outer seat 21 rotate relative to each other, and when the first joint inner seat 61 and the first joint outer seat 21 are in a fully opened or fully folded position, the first joint outer seat 21 is in a fully opened or fully folded position, and the first joint outer seat 21 is in a fully opened or fully folded position, and the first joint inner seat 61 and the first joint outer seat 21 are in a fully opened or fully folded position. The seat 21 is provided with a first button groove 212 which is communicated with the first unlocking tooth groove 211. The first button groove 212 is provided with a first unlocking button 110 for pushing the first locking tooth disc 41 out of the first unlocking tooth groove 211 and into the first locking tooth groove 611. A first reset elastic member 51 is provided between the first joint inner seat 61 and the first locking tooth disc 41 for pressing the first locking tooth disc 41 into the first unlocking tooth groove 211 when the first locking tooth disc 41 is aligned with the first unlocking tooth groove 211. The first reset elastic member 51 is a spring or a spring sheet, so that the first joint unlocking 131 remains stable when the children's dining chair 10 is unfolded and folded into place.

[0040] Further, as a preferred embodiment of the present invention but not a limitation, the first locking toothed disc 41 includes a first locking toothed disc body 411, and the first locking toothed disc body 411 is provided with a first sector-shaped locking tooth group 412 distributed along the circumference of the first locking toothed disc body 411, and the first sector-shaped locking tooth group 412 is composed of a plurality of locking teeth of the same shape and size, and except for the first and last two locking teeth, the spacing between other two adjacent locking teeth is equal, and the first sector-shaped locking tooth groove 611 is provided with a first sector-shaped locking tooth groove 213 corresponding to the first sector-shaped locking tooth group 412 on the inner side wall. When the first gear engaging mechanism 91 is unfolded and folded by the first joint unlocking mechanism 131, the first locking toothed disc 41 is stuck between the first locking tooth groove 611 and the first unlocking tooth groove 211.

[0041] Furthermore, as a preferred embodiment of the present invention but not a limitation, the first unlocking button 110 includes a first unlocking button body 111 intersecting in the first locking tooth groove 611, and the first unlocking button body 111 is provided with a first button pressing portion 112 for applying a pressing force and a first button lifting portion 113 for applying an outward pulling force, and a first pushing support rod 114 extending into the first locking tooth groove 611 to push the first locking tooth disk 41, so that when it is necessary to unlock the first joint unlocking mechanism, the operator can conveniently press and pull the first unlocking button 110 to unlock the first joint unlocking mechanism 131.

[0042] Furthermore, as a preferred embodiment of the present invention but not a limitation, the second joint unlocking mechanism 132 includes a second joint inner seat 62 arranged at the upper right end of the rear dining chair bracket 122 and a second joint outer seat 22 arranged at the upper right end of the front dining chair bracket 121, the second joint inner seat 62 and the second joint outer seat 22 are hinged to each other, and a second gear engagement mechanism 92 is provided between the second joint inner seat 62 and the second joint outer seat 22. The second gear engaging mechanism 92 includes a second locking tooth groove 621 arranged in the second joint inner seat 62 and a second unlocking tooth groove 221 arranged in the second joint outer seat 22 and corresponding to the second locking tooth groove 621, and a second locking tooth groove 621 is arranged between the second locking tooth groove 621 and the second unlocking tooth groove 221. When the second joint inner seat 62 and the second joint outer seat 22 rotate relative to each other, the second unlocking tooth groove 221 is disengaged from the second unlocking tooth groove 221 and slides into the second locking tooth groove 621, and when the second joint inner seat 62 and the second joint outer seat 22 are fully opened, the two ends are respectively inserted into the second locking tooth groove 621 and the second unlocking tooth groove 221, and when the second joint inner seat 62 and the second joint outer seat 22 are folded, the second locking tooth groove 621 of the second joint outer seat 22 presses the second locking tooth plate 42 in the second unlocking tooth groove 221, and the second joint outer seat 22 is folded. A second button groove 222 communicating with the second unlocking tooth groove 221 is provided on the top, and a second unlocking button 120 is provided in the second button groove 222 for pushing the second locking tooth disc 42 from the second unlocking tooth groove 221 to the second locking tooth groove 621. A second reset elastic member 52 is provided between the second joint inner seat 62 and the second locking tooth disc 42 for pressing the second locking tooth disc 42 into the second unlocking tooth groove 221 when the second locking tooth disc 42 is aligned with the second unlocking tooth groove 221. The second reset elastic member 52 is a spring or a spring sheet. The second joint unlocking mechanism 132 ensures that the structure of the children's dining chair 10 remains stable when it is unfolded. After the children's dining chair 10 is folded, the children's dining chair 10 can be opened with one hand next time.

[0043] Further, as a preferred embodiment of the present invention but not a limitation, the second locking toothed disc 42 comprises a second locking toothed disc body 421, on which a second sector-shaped latching tooth group 422 distributed along the circumference of the second locking toothed disc body 421 is provided, the second sector-shaped latching tooth group 422 is composed of staggered wide and narrow latching teeth, except for the first and last two latching teeth, the spacing between other adjacent two latching teeth is equal, and the inner wall of the second locking tooth groove 621 is provided with a second sector-shaped latching tooth groove 223 corresponding to the second sector-shaped latching tooth group 422. When the second joint unlocking mechanism 132 is unfolded, the second locking toothed disc 42 is stuck between the second locking tooth groove 621 and the second unlocking tooth groove 221, and when the second joint unlocking mechanism 132 is folded into place, the second locking toothed disc 42 is pressed into the second locking tooth groove 621 by the second unlocking tooth groove 221.

[0044] Furthermore, as a preferred embodiment of the present invention but not a limitation, the second unlocking button 120 includes a second unlocking button body 1210 intersecting in the second locking tooth groove 621, and the second unlocking button body 1210 is provided with a second button pressing portion 1220 for applying a pressing force and a second button pulling portion 123 for applying an outward pulling force, and a second pushing support rod 124 extending into the second locking tooth groove 621 to push the second locking tooth disk 42, so that the operator can conveniently unlock the second joint unlocking mechanism 132 when the children's dining chair 10 needs to be folded.

[0045] The working principle of this embodiment is as follows: when the children's dining chair needs to be unfolded in the folded state, the operator pulls the first button lifting part 113 of the first unlocking button 110 and presses the first button pressing part 112 with one hand at the same time, and the first push-pull support rod 114 of the first unlocking button 110 extends into the first locking tooth groove 611 to push the first locking tooth disk 41. When the first locking tooth disk 41 is pushed and completely enters the first locking tooth groove 611, the first joint inner seat 61 and the first joint outer seat 21 rotate relative to each other. The second locking toothed disc 42 of the second joint unlocking structure 132 is completely in the second locking tooth groove 621, and the second joint inner seat 62 rotates relative to the second joint outer seat 22. The operator pushes the dining chair bracket 12 with his other hand so that the rear dining chair bracket 122 and the front dining chair bracket 121 are at the maximum opening angle, and the child dining chair 10 is unfolded in place. The operator releases the first unlocking button 110. Since each tooth of the first locking toothed disc 41 is aligned with each tooth groove of the first locking tooth groove 611, the first reset elastic member 51 provides a thrust to make the first locking toothed disc 41 and the first locking tooth groove 611 align with each other. The toothed disc 41 is inserted into the first locking tooth groove 611 and the first unlocking tooth groove 211. As the first joint inner seat 61 and the first joint outer seat 21 of the first joint unlocking mechanism 131 rotate, the rear dining chair bracket 122 and the front dining chair bracket 121 rotate. Each large tooth and small gear of the second locking toothed disc 42 of the second joint unlocking mechanism 132 are aligned with the large tooth groove and small tooth groove of the second unlocking tooth groove 221. The second reset elastic member 52 pushes the second locking toothed disc 42 between the second locking tooth groove 621 and the second unlocking tooth groove 221. At this time, the first joint unlocking mechanism 131 and the second joint unlocking mechanism 132 cannot rotate, and the children's dining chair is in a relatively locked state.

[0046] When the children's dining chair needs to be folded in the unfolded state, the operator pulls and presses the first unlocking button 110 of the first joint unlocking mechanism 131 and the second unlocking button 120 of the second joint unlocking mechanism 132 with both hands at the same time, and the first push-pull support rod 114 of the first unlocking button 110 extends into the first locking tooth groove 611 to push the first locking tooth disc 41. When the first locking tooth disc 41 is pushed and fully enters the first locking tooth groove 611, the first joint inner seat 61 and the first joint outer seat 21 can rotate relative to each other, and the second push-pull support rod 124 of the second unlocking button 120 extends into the second locking tooth groove 621 to push the second locking tooth disc 42. When the second locking tooth disc 42 is pushed and fully enters the second locking tooth groove 621, the second joint inner seat 62 and the second joint outer seat 22 are relatively rotated. Rotate, the first joint unlocking mechanism 131 and the second joint unlocking mechanism 132 are unlocked, lift the child dining chair 10 off the ground, the child dining chair 10 is automatically folded, and when the rear dining chair bracket 122 and the front dining chair bracket 121 are at the minimum opening angle, release the first unlocking button 110 and the second unlocking button 120, and due to the thrust provided by the first reset elastic member 51, the first locking tooth plate 41 is inserted into the first locking tooth groove 611 and the first unlocking tooth groove 211, each large locking tooth of the second locking tooth 42 of the second joint unlocking mechanism 132 corresponds to each small tooth groove of the second unlocking tooth groove 221, the second unlocking tooth groove 221 presses the second locking tooth 42, and the second locking tooth plate 42 is all in the second locking tooth groove 621, so that it is convenient to open the child dining chair 10 with one hand next time.

[0047] The above are implementation methods provided in combination with specific contents, and it is not intended that the specific implementation of this application is limited to these descriptions. Any method structure similar to the present application, or a number of technical deductions or replacements based on the concept of the present application, should be considered as the protection scope of this application.

Claims

1. A safe children's dining chair that can be opened easily with one hand, characterized in that: The invention comprises a seat (11) for children to sit and eat, wherein dining chair brackets (12) for supporting the seat (11) are hinged on both sides of the seat (11), and the dining chair brackets (12) comprise a front dining chair bracket (121) and a rear dining chair bracket (122) whose upper ends are hinged to each other and hinged to both sides of the seat (11), and a joint unlocking mechanism (13) is provided between the front dining chair bracket (121) and the rear dining chair bracket (122), which is locked on both sides when unfolded and locked on one side when folded.

2. A safe children's dining chair that can be opened with one hand according to claim 1, characterized in that: The joint unlocking mechanism (13) comprises a first joint unlocking mechanism (131) and a second joint unlocking mechanism (132) respectively arranged at the hinged positions on both sides of the front dining chair bracket (121) and the rear dining chair bracket (122); the first joint unlocking mechanism (131) is provided with a first locking tooth groove (611) and a first unlocking tooth groove (211) of the same shape and size inside; when the children's dining chair is unfolded or folded, a first locking tooth groove (611) and a first unlocking tooth groove (211) are embedded between the first locking tooth groove (611) and the first unlocking tooth groove (211) to form a plurality of shaped teeth. The second joint unlocking mechanism (132) has second locking tooth grooves (621) and second unlocking tooth grooves (221) with staggered widths and narrows, respectively. When the safety child dining chair (10) is unfolded, a plurality of staggered width and narrow locking teeth of the second locking tooth plate body (421) are embedded between the second locking tooth grooves (621) and the second unlocking tooth grooves (221). When the safety child dining chair (10) is folded, the narrow teeth of the second unlocking tooth grooves (221) press the wide teeth of the second locking tooth plate body (421) into the second unlocking tooth grooves (221).

3. A safe children's dining chair that can be opened with one hand according to claim 2, characterized in that: The first joint unlocking mechanism (131) comprises a first joint inner seat (61) arranged at the upper left end of the rear dining chair bracket (122) and a first joint outer seat (21) arranged at the upper left end of the front dining chair bracket (121); the first joint inner seat (61) and the first joint outer seat (21) are hinged to each other; and a first gear engaging mechanism (91) is provided between the first joint inner seat (61) and the first joint outer seat (21).

4. The safe children's dining chair that can be opened with one hand according to claim 3, characterized in that: The first gear engaging mechanism (91) comprises a first locking tooth groove (611) arranged in the first joint inner seat (61) and a first unlocking tooth groove (211) arranged in the first joint outer seat (21) and corresponding to the first locking tooth groove (611); a tooth groove (211) is arranged between the first locking tooth groove (611) and the first unlocking tooth groove (211) so as to disengage from the first unlocking tooth groove (211) and slide into the first locking tooth groove (611) when the first joint inner seat (61) and the first joint outer seat (21) rotate relative to each other, and the two ends of the tooth groove (211) are respectively inserted into the first locking tooth groove (611) and the first unlocking tooth groove (211) when the first joint inner seat (61) and the first joint outer seat (21) are in a fully opened or fully folded position. A first locking toothed disc (41) is disposed in the first unlocking tooth groove (211); a first button groove (212) communicating with the first unlocking tooth groove (211) is disposed on the first joint outer seat (21); a first unlocking button (110) is disposed in the first button groove (212) for pushing the first locking toothed disc (41) out of the first unlocking tooth groove (211) and into the first locking tooth groove (611); and a first resetting elastic member (51) is disposed between the first joint inner seat (61) and the first locking toothed disc (41) for pressing the first locking toothed disc (41) into the first unlocking tooth groove (211) when the first locking toothed disc (41) is aligned with the first unlocking tooth groove (211).

5. The safe children's dining chair that can be opened with one hand according to claim 4, characterized in that: The first locking toothed disc (41) comprises a first locking toothed disc body (411), the first locking toothed disc body (411) is provided with a first sector-shaped locking tooth group (412) distributed along the circumference of the first locking toothed disc body (411), the first sector-shaped locking tooth group (412) is composed of a plurality of locking teeth of the same shape and size, and except for the first and last two locking teeth, the spacing between other two adjacent locking teeth is equal, and the inner side wall of the first locking tooth groove (611) is provided with a first sector-shaped locking tooth groove (213) corresponding to the first sector-shaped locking tooth group (412).

6. The safe children's dining chair that can be opened with one hand according to claim 4, characterized in that: The first unlocking button (110) comprises a first unlocking button body (111) connected in the first locking tooth groove (611), and the first unlocking button body (111) is provided with a first button pressing portion (112) for applying a pressing force, a first button pulling portion (113) for applying an outward pulling force, and a first pushing support rod (114) extending into the first locking tooth groove (611) to push the first locking tooth disc (41).

7. The safe children's dining chair that can be opened with one hand according to claim 2, characterized in that: The second joint unlocking mechanism (132) comprises a second joint inner seat (62) arranged at the upper right end of the rear dining chair support (122) and a second joint outer seat (22) arranged at the upper right end of the front dining chair support (121); the second joint inner seat (62) and the second joint outer seat (22) are hinged to each other; a second gear engaging mechanism (92) is arranged between the second joint inner seat (62) and the second joint outer seat (22); the second gear engaging mechanism (92) comprises a second locking tooth groove (621) arranged in the second joint inner seat (62) and a second unlocking tooth groove (221) arranged in the second joint outer seat (22) and corresponding to the second locking tooth groove (621); a gear is arranged between the second locking tooth groove (621) and the second unlocking tooth groove (221) so as to disengage from the second unlocking tooth groove (221) when the second joint inner seat (62) and the second joint outer seat (22) rotate relative to each other. The second locking toothed disc (42) slides into the second locking toothed groove (621) and is respectively inserted into the second locking toothed groove (621) and the second unlocking toothed groove (221) at both ends when the second joint inner seat (62) and the second joint outer seat (22) are fully opened; a second button groove (222) communicating with the second unlocking toothed groove (221) is provided on the second joint outer seat (22); a second unlocking button (120) for pushing the second locking toothed disc (42) out of the second unlocking toothed groove (221) and into the second locking toothed groove (621) is provided in the second button groove (222); a second reset elastic member (52) is provided between the second joint inner seat (62) and the second locking toothed disc (42) for pressing the second locking toothed disc (42) into the second unlocking toothed groove (221) when the second locking toothed disc (42) is aligned with the second unlocking toothed groove (221).

8. The safe children's dining chair that can be opened easily with one hand according to claim 7, characterized in that: The second gear engaging mechanism (92) comprises a second locking tooth groove (621) arranged in the second joint inner seat (62) and a second unlocking tooth groove (221) arranged in the second joint outer seat (22) and corresponding to the second locking tooth groove (621); when folded, the second locking tooth groove (621) of the second joint outer seat (22) presses the second locking tooth plate (42) in the second unlocking tooth groove (221).

9. The safe children's dining chair that can be opened easily with one hand according to claim 7, characterized in that: The second locking toothed disc (42) comprises a second locking toothed disc body (421), the second locking toothed disc body (421) is provided with a second sector-shaped locking tooth group (422) distributed along the circumference of the second locking toothed disc body (421), the second sector-shaped locking tooth group (422) is composed of wide and narrow staggered locking teeth, except for the first and last two locking teeth, the spacing between other adjacent two locking teeth is equal, and the inner side wall of the second locking tooth groove (621) is provided with a second sector-shaped locking tooth groove (223) corresponding to the second sector-shaped locking tooth group (422).

10. The safe children's dining chair that can be opened easily with one hand according to claim 7, characterized in that: The second unlocking button (120) includes a second unlocking button body (1210) connected to the second locking tooth groove (621), and the second unlocking button body (1210) is provided with a second button pressing portion (1220) for applying a pressing force, a second button pulling portion (123) for applying an outward pulling force, and a second pushing support rod (124) extending into the second locking tooth groove (621) to push the second locking tooth disc (42).

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