CN220876405U - Front-back adjusting mechanism of backrest of children learning chair - Google Patents
Front-back adjusting mechanism of backrest of children learning chair Download PDFInfo
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- CN220876405U CN220876405U CN202322526783.4U CN202322526783U CN220876405U CN 220876405 U CN220876405 U CN 220876405U CN 202322526783 U CN202322526783 U CN 202322526783U CN 220876405 U CN220876405 U CN 220876405U
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- sliding frame
- locking
- stud
- balladeur train
- adjusting mechanism
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- 239000002184 metal Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of children learning chair components, in particular to a front-back adjusting mechanism of a backrest of a children learning chair, which comprises a supporting frame, a lifting sliding sleeve movably arranged on the supporting frame, a fastening rotary handle arranged at the left end of the lifting sliding sleeve in a screwed mode, an inner sliding frame integrally fixed at the right end of the lifting sliding sleeve, an outer sliding frame movably arranged at the outer side of the inner sliding frame and two backrest plates symmetrically arranged at the two sides of the right end of the outer sliding frame through elastic supporting bodies. According to the utility model, the original locking structure between the inner sliding frame and the outer sliding frame is scientifically and reasonably improved, and the adjusting knob, the first stud, the second stud, the locking block and the locking groove are arranged between the inner sliding frame and the outer sliding frame, so that the inner sliding frame and the outer sliding frame after adjustment can be comprehensively locked, the problem of transverse displacement of the outer sliding frame on the inner sliding frame after the backrest is stressed is effectively reduced, and the structural bearing stability of the child study chair after adjustment is improved.
Description
Technical Field
The utility model relates to the technical field of child learning chair components, in particular to a front-back adjusting mechanism of a child learning chair backrest.
Background
The children growing desk and chair is one of the ergonomic desks and chairs, mainly aims at children and meets the growing needs of the children; the height and the inclination of the children growing desk and chair can be adjusted, the height, the depth and the inclination of the seat cushion and the height and the inclination of the back cushion can be adjusted, the children can be helped to maintain a correct sitting posture, children can accompany the study, and the children can grow all the way.
At present, the structure of back and forth adjustment of the conventional children learning chair on the market is similar to the connection structure of the support frame and the lifting sliding sleeve in fig. 1, after the outer sliding frame is adjusted back and forth on the inner sliding frame, the outer sliding frame is locked on the inner sliding frame after adjustment by screwing the fastening rotary handle, and the back and forth adjustment mechanism of the structure has the following defects in the actual use process: because the studs on the fastening rotary handle are extruded and abutted to the surface of the inner sliding frame to lock, the structural stability of the back after the back is adjusted is poor, the whole back is easy to displace backwards under the comprehensive action of impact force and extrusion force when the back is contacted by a child, manual adjustment and resetting treatment is needed at intervals, and inconvenience is brought to parents and practical use of the child.
In view of the above, it is important to design and manufacture a backrest front-rear adjusting mechanism which can effectively prevent lateral displacement after adjustment and is stable in support, and the backrest front-rear adjusting mechanism is particularly important in children's learning chairs.
Disclosure of utility model
The utility model aims at: in order to solve the problem that the back-and-forth adjusting mechanism of the traditional child learning chair is easy to displace under the action of external force after adjusting and locking and is poor in stability of supporting after adjusting, the back-and-forth adjusting mechanism of the child learning chair is provided.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides an adjustment mechanism around children study chair back, includes support frame, movable mounting lift sliding sleeve on the support frame, through the screw thread screwing install the fastening of lift sliding sleeve left end revolve the handle, integrative interior balladeur train in lift sliding sleeve right-hand member, movable mounting including the outer balladeur train in the balladeur train outside and through two back boards of elastic support body symmetry installation in outer balladeur train right-hand member both sides, be provided with the locking portion that is used for synthesizing the locking on the balladeur train after the adjustment around outer balladeur train between interior balladeur train and the outer balladeur train.
As a further description of the above technical solution:
the locking part comprises an inner screw seat integrally fixed at the left side of the lower end of the outer sliding frame, a first stud arranged at the inner side of the inner screw seat in a screwed mode, an adjusting knob arranged at the lower end of the first stud, a second stud integrally fixed at the upper end of the first stud, a locking block arranged between the first stud and the second stud, a plurality of locking blocks symmetrically fixed at two sides of the upper end of the locking block and a plurality of locking grooves formed at the lower end of the inner sliding frame and matched with the locking blocks.
As a further description of the above technical solution:
The external diameter of first double-screw bolt is greater than the external diameter of second double-screw bolt, the lower extreme middle part of locking piece seted up with be used for holding the indent hole of second double-screw bolt upper end, and the inboard demountable installation of indent hole has the metal washer.
As a further description of the above technical solution:
The upper end middle part of locking piece an organic whole fixedly connected with runs through the guide block of interior balladeur train, the guide slot corresponding with the guide block has been seted up at the lower extreme middle part of interior balladeur train.
As a further description of the above technical solution:
And the outer side of the second stud is provided with a hexagonal nut which is attached to the upper end surface of the guide block through screwing.
As a further description of the above technical solution:
The middle part of the right end of the inner sliding frame is positioned above the guide groove and provided with a first through hole vertically penetrating the inner sliding frame, the middle part of the left end of the outer sliding frame is positioned above the inner screw seat and provided with a second through hole, and the upper part of the second through hole is adhered with a rubber plug sheet.
As a further description of the above technical solution:
the middle part of the right end of the outer sliding frame is movably provided with a headrest support which is vertically distributed, the upper end of the headrest support is rotatably provided with a headrest back plate, the right end of the headrest back plate is provided with a headrest cushion, and the right end of the backrest back plate is provided with a lumbar support cushion.
As a further description of the above technical solution:
The lumbar support pad and the headrest pad are both made of memory silica gel materials.
As a further description of the above technical solution:
The upper end of the support frame is provided with a handle.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
according to the utility model, the original locking structure between the inner sliding frame and the outer sliding frame is scientifically and reasonably improved, the adjusting knob, the first stud, the second stud, the locking block and the locking groove are arranged between the inner sliding frame and the outer sliding frame, when the adjusting knob is held and rotated, the first stud can move upwards below the outer sliding frame, the locking block on the locking block can be contacted upwards and meshed with the locking groove below the inner sliding frame, when the adjusting knob is continuously rotated, the whole locking block can be upwards abutted against the lower end of the inner sliding frame, the outer sliding frame can be comprehensively locked on the inner sliding frame under the comprehensive actions of the meshing between the locking block and the locking groove and the contact extrusion force of the locking block, and the structure can be used for comprehensively locking the adjusted inner sliding frame and the outer sliding frame, so that the problem of transverse displacement of the outer sliding frame on the inner sliding frame after the backrest is stressed is effectively reduced, and the stability of the structure bearing force after the child learning chair is adjusted is improved.
Drawings
FIG. 1 is a schematic diagram of a back-rest front-rear adjusting mechanism of a child learning chair according to the present utility model;
FIG. 2 is a perspective exploded view of the back-rest front-rear adjustment mechanism of the present utility model;
Fig. 3 is a perspective exploded view of the back-rest front-rear adjusting mechanism of the present utility model.
Legend description:
1. A support frame; 101. a handle; 2. lifting sliding sleeve; 201. an inner carriage; 202. a first through hole; 203. a guide groove; 204. a locking groove; 3. an outer carriage; 301. an elastic support body; 302. a second through hole; 303. rubber plug sheets; 304. an internal screw seat; 4. a backboard; 401. a lumbar support pad; 5. a headrest bracket; 501. a headrest back plate; 502. a headrest cushion; 6. fastening a rotary handle; 7. an adjustment knob; 701. a first stud; 702. a second stud; 8. a locking block; 801. a guide block; 802. a locking piece; 803. concave holes; 9. a hexagonal nut; 10. a metal gasket.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides an adjustment mechanism around children study chair back, including support frame 1, movable mounting is at the lift sliding sleeve 2 on support frame 1, through the screw thread screwing install at the fastening of lift sliding sleeve 2 left end revolve handle 6, integrative interior balladeur train 201 at lift sliding sleeve 2 right-hand member, movable mounting is including the outer balladeur train 3 in the balladeur train 201 outside and install two backboard 4 in outer balladeur train 3 right-hand member both sides through elastic support body 301 symmetry, be provided with the locking portion that is used for outer balladeur train 3 front and back adjustment back comprehensive locking including on balladeur train 201 between interior balladeur train 201 and the outer balladeur train 3.
Specifically, as shown in fig. 1 to 3, the locking portion includes an inner screw seat 304 integrally fixed to the left side of the lower end of the outer carriage 3, a first stud 701 screwed on the inner side of the inner screw seat 304, an adjusting knob 7 mounted to the lower end of the first stud 701, a second stud 702 integrally fixed to the upper end of the first stud 701, a locking block 8 mounted between the first stud 701 and the second stud 702, a plurality of locking blocks 802 symmetrically fixed to both sides of the upper end of the locking block 8, and a plurality of locking grooves 204 opened at the lower end of the inner carriage 201 and matched with the plurality of locking blocks 802, and when the locking block 802 on the locking block 8 is engaged with the locking groove 204 on the inner carriage 201, a first step locking operation between the outer carriage 3 and the inner carriage 201 can be achieved, and when the locking block 8 is contacted upward and pressed to the lower end of the inner carriage 201, a second step locking operation between the outer carriage 3 and the inner carriage 201 can be achieved.
Wherein, the external diameter of first double-screw bolt 701 is greater than the external diameter of second double-screw bolt 702, the distribution of this kind of structure can be with the more stable fixing of locking piece 8 between first double-screw bolt 701 and second double-screw bolt 702, the lower extreme middle part of locking piece 8 seted up with be used for holding the indent 803 of second double-screw bolt 702 upper end, and the inboard demountable installation of indent 803 has metal gasket 10, after metal gasket 10 installs in the indent 803, can prevent the upper end direct contact of first double-screw bolt 701 to locking piece 8, thereby effectively reduced the contact wear between first double-screw bolt 701 and the locking piece 8, thereby can prolong the life of this part.
The upper end middle part of locking piece 8 an organic whole fixedly connected with runs through the guide block 801 of interior balladeur train 201, and the guide slot 203 corresponding with guide block 801 has been seted up at the lower extreme middle part of interior balladeur train 201, and the comprehensive setting of guide block 801 and guide slot 203 can restrict outer balladeur train 3 and break away from interior balladeur train 201 in the slip in-process on the one hand, can restrict the nearest and the furthest distance of outer balladeur train 3 on interior balladeur train 201 on the other hand, has promoted the stability of locking piece 8 under the unlocked state, sliding adjustment in interior balladeur train 201 below.
The hexagonal nut 9 attached to the upper end face of the guide block 801 is mounted on the outer side of the second stud 702 through threaded screwing, when the hexagonal nut 9 is screwed onto the second stud 702, on one hand, the first stud 701 is prevented from being separated from the inner screw seat 304 on the outer carriage 3 when the adjusting knob 7 is reversely rotated downwards, and meanwhile, the locking block 8 can be stably limited between the first stud 701 and the second stud 702, so that the controllability of the first stud 701 on the adjustment of the locking block 8 is improved.
The middle part of the right end of the inner carriage 201 is positioned above the guide groove 203 and is provided with a first through hole 202 which vertically penetrates through the inner carriage 201, the middle part of the left end of the outer carriage 3 is positioned above the inner screw seat 304 and is provided with a second through hole 302, when the outer carriage 3 is slidably adjusted to the farthest position of the inner carriage 201, the first through hole 202 and the second through hole 302 are overlapped, a rubber plug sheet 303 is adhered above the second through hole 302, after the hexagonal nut 9 is mounted on the second stud 702, the rubber plug sheet 303 can seal the opening of the second through hole 302, so that external foreign matters and dust are prevented from entering the outer carriage 3 through the second through hole 302, and meanwhile, the hexagonal nut 9 on the second stud 702 can be prevented from being disassembled by children.
Specifically, as shown in fig. 1-3, the middle part of the right end of the outer carriage 3 is movably provided with a headrest support 5 which is vertically distributed, the upper end of the headrest support 5 is rotatably provided with a headrest back plate 501, the right end of the headrest back plate 501 is provided with a headrest cushion 502, the right end of the back plate 4 is provided with a lumbar support cushion 401, and meanwhile, the lumbar support cushion 401 and the headrest cushion 502 are both made of memory silica gel materials, and the materials are selected for use, so that the user can be better attached and surrounded by limbs of the user, thereby improving the comfort of the user in the actual use process.
The handle 101 is installed to the upper end of support frame 1, and the operating personnel's of being convenient for hand grips support frame 1 to the user is to children study the operation of pushing away of chair.
Working principle: when in use, during the assembly between the outer sliding frame 3 and the inner sliding frame 201, an operator can put the metal gasket 10 into the concave hole 803 of the locking block 8 in advance, then can slide and adjust the guide block 801 on the locking block 8 into the guide groove 203 on the inner sliding frame 201, can slide and adjust the whole locking block 8 to the lower part of the first through hole 202, then can slide and install the outer sliding frame 3 on the inner sliding frame 201, so that the first through hole 202 on the inner sliding frame 201 coincides with the second through hole 302 on the outer sliding frame 3, at the moment, the operator can screw the first stud 701 on the adjusting knob 7 onto the outer sliding frame 3 through the inner screw seat 304, when the second stud 702 passes through the guide block 801 on the locking block 8, the operator can screw the hexagonal nut 9 onto the second stud 702 through the first through hole 202 and the second through hole 302 by using a tool, when the hexagonal nut 9 is tightly attached to the upper end surface of the guide block 801, the rubber plug 303 is adhered to the second through hole 302, so that the assembly operation between the outer carriage 3 and the inner carriage 201 is completed, in the actual use process, when the adjusting knob 7 is reversely rotated downwards, the first stud 701 drives the locking block 8 to be wholly separated from the inner carriage 201 downwards, at the moment, the outer carriage 3 can be adjusted on the inner carriage 201 in the back front-rear direction, after the sliding adjustment of the outer carriage 3 is completed, the operator positively rotates the adjusting knob 7 upwards, the locking block 8 wholly can be moved upwards, the locking block 8 can be moved upwards, the locking block 802 on the locking block 8 can be upwards engaged with the locking groove 204 on the inner carriage 201, and meanwhile, the locking block 8 can be upwards contacted and extruded to the lower end of the inner carriage 201, so that the outer carriage 3 is comprehensively limited and locked on the inner carriage 201, the locking operation after the sliding adjustment of the outer carriage 3 is completed.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (9)
1. The utility model provides an adjustment mechanism around children study chair back, includes support frame (1), movable mounting lift sliding sleeve (2) on support frame (1), through screw thread screwing install at the fastening of lift sliding sleeve (2) left end revolve handle (6), integrative interior balladeur train (201) of fixing in lift sliding sleeve (2) right-hand member, movable mounting including outer balladeur train (3) in the balladeur train (201) outside and through two back boards (4) of elastic support body (301) symmetry installation in outer balladeur train (3) right-hand member both sides, a serial communication port, be provided with between interior balladeur train (201) and outer balladeur train (3) and be used for comprehensive locking including on balladeur train (201) after the adjustment.
2. The back-rest front-back adjusting mechanism of the child learning chair according to claim 1, wherein the locking part comprises an inner screw seat (304) integrally fixed at the left side of the lower end of the outer carriage (3), a first screw bolt (701) installed inside the inner screw seat (304) through screwing, an adjusting knob (7) installed at the lower end of the first screw bolt (701), a second screw bolt (702) integrally fixed at the upper end of the first screw bolt (701), a locking block (8) installed between the first screw bolt (701) and the second screw bolt (702), a plurality of locking blocks (802) symmetrically fixed at both sides of the upper end of the locking block (8), and a plurality of locking grooves (204) opened at the lower end of the inner carriage (201) and matched with the plurality of locking blocks (802).
3. The back-rest front-back adjusting mechanism of the child learning chair according to claim 2, wherein the outer diameter of the first stud (701) is larger than the outer diameter of the second stud (702), a concave hole (803) for accommodating the upper end of the second stud (702) is formed in the middle of the lower end of the locking block (8), and a metal gasket (10) is detachably mounted on the inner side of the concave hole (803).
4. A front-back adjusting mechanism of a chair for children according to claim 2 or 3, wherein a guide block (801) penetrating through the inner carriage (201) is fixedly connected to the middle part of the upper end of the locking block (8), and a guide groove (203) corresponding to the guide block (801) is formed in the middle part of the lower end of the inner carriage (201).
5. The back-rest front-back adjusting mechanism of the child learning chair according to claim 4, wherein a hexagonal nut (9) attached to the upper end surface of the guide block (801) is mounted on the outer side of the second stud (702) through screwing.
6. The back-rest front-back adjusting mechanism of the child learning chair according to claim 5, wherein a first through hole (202) vertically penetrating through the inner carriage (201) is formed in the middle of the right end of the inner carriage (201) above the guide groove (203), a second through hole (302) is formed in the middle of the left end of the outer carriage (3) above the inner screw seat (304), and a rubber plug sheet (303) is adhered to the upper side of the second through hole (302).
7. The back-rest front-back adjusting mechanism of the child learning chair according to claim 1, wherein a headrest support (5) which is vertically distributed is movably mounted in the middle of the right end of the outer carriage (3), a headrest back plate (501) is rotatably mounted at the upper end of the headrest support (5), a headrest cushion (502) is mounted at the right end of the headrest back plate (501), and a lumbar support cushion (401) is mounted at the right end of the back plate (4).
8. The back-rest front-back adjustment mechanism of the child learning chair according to claim 7, wherein the lumbar support pad (401) and the headrest pad (502) are both made of a memory silica gel material.
9. A back-rest front-back adjusting mechanism of a child learning chair according to claim 1, characterized in that the upper end of the support frame (1) is provided with a handle (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322526783.4U CN220876405U (en) | 2023-09-16 | 2023-09-16 | Front-back adjusting mechanism of backrest of children learning chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322526783.4U CN220876405U (en) | 2023-09-16 | 2023-09-16 | Front-back adjusting mechanism of backrest of children learning chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220876405U true CN220876405U (en) | 2024-05-03 |
Family
ID=90869705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322526783.4U Active CN220876405U (en) | 2023-09-16 | 2023-09-16 | Front-back adjusting mechanism of backrest of children learning chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220876405U (en) |
-
2023
- 2023-09-16 CN CN202322526783.4U patent/CN220876405U/en active Active
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