CN215936895U - Four-connecting-rod type seat depth adjusting mechanism and seat with adjustable seat depth - Google Patents
Four-connecting-rod type seat depth adjusting mechanism and seat with adjustable seat depth Download PDFInfo
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- CN215936895U CN215936895U CN202122289172.3U CN202122289172U CN215936895U CN 215936895 U CN215936895 U CN 215936895U CN 202122289172 U CN202122289172 U CN 202122289172U CN 215936895 U CN215936895 U CN 215936895U
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- connecting rod
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Abstract
The utility model discloses a four-connecting-rod type seat depth adjusting mechanism and a seat with adjustable seat depth, wherein the seat depth adjusting mechanism comprises a rear fixed sleeve, a front fixed plate and four connecting rods, the four connecting rods are respectively a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the first connecting rod is movably connected with the second connecting rod, the third connecting rod is movably connected with the fourth connecting rod, the front end of the first connecting rod and the front end of the third connecting rod are movably connected with the front fixed plate, and the rear end of the second connecting rod and the rear end of the fourth connecting rod are movably connected with the rear fixed sleeve through torsion springs; the front end of the first connecting rod, the rear end of the second connecting rod, the front end of the third connecting rod and the rear end of the fourth connecting rod are all provided with gear parts; the connecting part of the first connecting rod and the second connecting rod and the connecting part of the third connecting rod and the fourth connecting rod are provided with regulating switches; the front fixing plate is fixedly connected with the chair back of the chair. The seat depth adjusting mechanism can realize adjustment of the maximum range of the seat depth, so that the seat can adapt to children with different body types, and the back of the seat can be attached to the back of the child to form support.
Description
Technical Field
The utility model relates to the technical field of learning chairs, in particular to a four-link-rod-type seat depth adjusting mechanism and a seat with adjustable seat depth.
Background
The learning chair is used as a tool for accompanying children to learn and plays an important role in the growth learning process of the children. The existing child learning chair basically meets the use requirements of children with different heights through a lifting function, but the chair back of the learning chair is often fixed and cannot be adjusted forwards and backwards, and meanwhile, the stroke range of the chair seat forward and backward adjustment is small, so that the seat depth adjustment range of the existing learning chair is small. The children's position of sitting of different sizes is different, and the deep adjustment scope undersize of the seat of study chair can not make the children of different sizes can keep a healthy position of sitting, and the seat is adjusted deeply moreover and can not be to suitable scope, also makes study chair its back can not laminate children back when children use, makes children's back lack the support, and children sit the problem that the bow-backed appears after for a long time easily, and then influence children's healthy study growth.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problems, the present invention provides a four-bar linkage type seat depth adjusting mechanism and a seat with adjustable seat depth; this seat is dark adjustment mechanism can carry out the preceding back regulation of maximum stroke to the back of the chair to the realization is adjusted the deep maximum range of seat, makes the seat can adapt to the children of different sizes, keeps the back of the chair to laminate children back in order to form the support.
In order to achieve the technical purpose and achieve the technical effect, the utility model is realized by the following technical scheme:
a four-connecting-rod type seat depth adjusting mechanism comprises a rear fixing sleeve, a front fixing plate and four connecting rods, wherein the four connecting rods are a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod respectively; the first connecting rod is movably connected with the second connecting rod, the third connecting rod is movably connected with the fourth connecting rod, the front end of the first connecting rod and the front end of the third connecting rod are movably connected with the front fixing plate, and the rear end of the second connecting rod and the rear end of the fourth connecting rod are movably connected with the rear fixing sleeve through torsion springs; the front end of the first connecting rod, the rear end of the second connecting rod, the front end of the third connecting rod and the rear end of the fourth connecting rod are respectively provided with a gear part, and the first connecting rod and the third connecting rod and the second connecting rod and the fourth connecting rod are respectively meshed through gears of the gear parts; the connecting part of the first connecting rod and the second connecting rod and the connecting part of the third connecting rod and the fourth connecting rod are respectively provided with an adjusting switch; the front fixing plate is fixedly connected with the chair back of the chair.
Furthermore, the front end of the first connecting rod, the rear end of the second connecting rod, the front end of the third connecting rod and the rear end of the fourth connecting rod are provided with grooves, and gear parts are respectively arranged above and below the grooves.
The first connecting rod and the second connecting rod, the third connecting rod and the fourth connecting rod are movably connected through the first connecting piece respectively, and the second connecting rod and the rear fixing sleeve, the first connecting rod and the front fixing plate, the third connecting rod and the front fixing plate and the fourth connecting rod and the rear fixing sleeve are movably connected through the second connecting piece respectively.
Furthermore, torsional springs are sleeved on the rear end of the second connecting rod and the second connecting piece on the rear end of the fourth connecting rod respectively.
Furthermore, the adjusting switches at the joint of the first connecting rod and the second connecting rod and at the joint of the third connecting rod and the fourth connecting rod are respectively connected with the corresponding connecting pieces through threads.
The utility model further provides a seat with adjustable seat depth, which is provided with the four-link type seat depth adjusting mechanism, wherein the rear fixing sleeve is connected to the upright post of the seat.
The utility model has the beneficial effects that:
the seat depth adjusting mechanism is linked through the four connecting rods and matched with the acting force of the torsion spring, so that the seat back of the seat can be driven to move back and forth, the front and back adjustment of the maximum stroke of the seat back is realized, the maximum range adjustment of the seat depth is further realized, the seat can adapt to children with different body types, the seat back can be attached to the back of the child to form support, and the problem that the child bends over and humps after sitting for a long time is solved.
The four connecting rods in the seat depth adjusting mechanism can form a parallelogram structure during linkage, the structure is more reliable and stable in the adjusting process, and the stability of the chair back is better after the adjustment is finished.
Drawings
Fig. 1 is a schematic perspective view of a four-bar linkage type seat depth adjusting mechanism according to the present invention.
Fig. 2 is an exploded view of a four-bar linkage seat depth adjustment mechanism according to the present invention.
Fig. 3 is a schematic structural view of the seat with adjustable seat depth of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, a preferred embodiment of a four-link type seat depth adjusting mechanism includes a rear fixing sleeve 1, a front fixing plate 2, and four links, i.e., a link one 3, a link two 4, a link three 5, and a link four 6, wherein the link one 3 and the link two 4 are located at the right side of the seat, and the link three 5 and the link four 6 are located at the left side of the seat; the connecting rod I3 and the connecting rod II 4 are movably connected through a connecting piece I7, the connecting rod III 5 and the connecting rod IV 6 are movably connected through a connecting piece I7, the front end of the connecting rod I3 and the front end of the connecting rod III 5 are respectively and movably connected with the front fixing plate 2 through a connecting piece II 8, and the rear end of the connecting rod II 4 and the rear end of the connecting rod IV 6 are respectively and movably connected with the rear fixing sleeve 1 through a connecting piece II 8 and a torsion spring 9 sleeved on the connecting piece II 8; the front end of the first connecting rod 3, the rear end of the second connecting rod 4, the front end of the third connecting rod 5 and the rear end of the fourth connecting rod 6 are provided with grooves, and gear parts 10 are respectively arranged above and below the grooves; the first connecting rod 3 and the third connecting rod 5 and the second connecting rod 4 and the fourth connecting rod 6 are respectively meshed through gears of the gear part 10; furthermore, the torsion springs 9 are located in the corresponding slots; the connecting part of the first connecting rod 3 and the second connecting rod 4 and the connecting part of the third connecting rod 5 and the fourth connecting rod 6 are respectively connected with an adjusting switch 11 through threads; the front fixing plate 2 is fixedly connected with a chair back 12 of the chair.
As shown in fig. 1-3, in consideration of the aesthetic property and safety of the structure, the connection points of the first connecting rod 3 and the third connecting rod 4 with the front fixing plate 2 and the connection points of the second connecting rod 5 and the fourth connecting rod 6 with the rear fixing sleeve 1 are respectively provided with a cover plate 13.
As shown in fig. 3, the present invention further provides a seat with adjustable seat depth, the seat has a seat 14, a backrest 12, a base 15 and chair legs 16, the base 15 is provided with an upright post 17, a four-bar linkage type seat depth adjusting mechanism is arranged between the backrest 12 and the upright post 17, wherein a rear fixing sleeve 1 is connected to the upright post 17 of the seat, and a front fixing plate 2 is fixedly connected with the backrest 12.
During the use, rotation regulating switch 11 makes regulating switch 11 be in the open mode, children sit back on seat support 14, lean on backward, exert oneself through the back, make back of the chair 12 backward movement under the linkage of four connecting rods and torsional spring 9's effect, then children's adjustment position of sitting, back of the chair 12 back-and-forth movement under the effect of four connecting rods and torsional spring, until children find the most comfortable and most healthy position of sitting, rotate regulating switch 11 again, make regulating switch 11 be in the lock-out condition, at this moment, the position of back of the chair 12 is locked, laminate with children's back, support children's back.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The utility model provides a deep adjustment mechanism of four connecting rod formula seat which characterized in that: the four connecting rods are respectively a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the first connecting rod and the second connecting rod are positioned on the right side of the seat, and the third connecting rod and the fourth connecting rod are positioned on the left side of the seat; the first connecting rod is movably connected with the second connecting rod, the third connecting rod is movably connected with the fourth connecting rod, the front end of the first connecting rod and the front end of the third connecting rod are movably connected with the front fixing plate, and the rear end of the second connecting rod and the rear end of the fourth connecting rod are movably connected with the rear fixing sleeve through torsion springs; the front end of the first connecting rod, the rear end of the second connecting rod, the front end of the third connecting rod and the rear end of the fourth connecting rod are respectively provided with a gear part, and the first connecting rod and the third connecting rod and the second connecting rod and the fourth connecting rod are respectively meshed through gears of the gear parts; the connecting part of the first connecting rod and the second connecting rod and the connecting part of the third connecting rod and the fourth connecting rod are respectively provided with an adjusting switch; the front fixing plate is fixedly connected with the chair back of the chair.
2. The four-link seat back adjustment mechanism of claim 1, wherein: the front end of the first connecting rod, the rear end of the second connecting rod, the front end of the third connecting rod and the rear end of the fourth connecting rod are provided with grooves, and gear parts are respectively arranged above and below the grooves.
3. The four-link seat back adjustment mechanism of claim 1, wherein: the first connecting rod and the second connecting rod, the third connecting rod and the fourth connecting rod are movably connected through the first connecting piece respectively, and the second connecting rod and the rear fixing sleeve, the first connecting rod and the front fixing plate, the third connecting rod and the front fixing plate and the fourth connecting rod and the rear fixing sleeve are movably connected through the second connecting piece respectively.
4. The four-link seat back adjustment mechanism of claim 3, wherein: and torsional springs are sleeved on the second connecting piece at the rear end of the second connecting rod and the rear end of the fourth connecting rod respectively.
5. The four-link seat back adjustment mechanism of claim 3, wherein: and the adjusting switches at the joint of the first connecting rod and the second connecting rod and at the joint of the third connecting rod and the fourth connecting rod are respectively connected with the corresponding connecting pieces through threads.
6. A seat with adjustable seat depth is characterized in that: the four-link seat depth adjustment mechanism of any of claims 1 to 5, wherein the rear anchor sleeve is attached to the upright of the seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122289172.3U CN215936895U (en) | 2021-09-22 | 2021-09-22 | Four-connecting-rod type seat depth adjusting mechanism and seat with adjustable seat depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122289172.3U CN215936895U (en) | 2021-09-22 | 2021-09-22 | Four-connecting-rod type seat depth adjusting mechanism and seat with adjustable seat depth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215936895U true CN215936895U (en) | 2022-03-04 |
Family
ID=80427104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122289172.3U Active CN215936895U (en) | 2021-09-22 | 2021-09-22 | Four-connecting-rod type seat depth adjusting mechanism and seat with adjustable seat depth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215936895U (en) |
-
2021
- 2021-09-22 CN CN202122289172.3U patent/CN215936895U/en active Active
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