CN215347997U

CN215347997U - Seat base and child seat using same

Info

Publication number: CN215347997U
Application number: CN202120721455.8U
Authority: CN
Inventors: 吕凡臻
Original assignee: Weifang Chief Tongfan Furniture Technology Co ltd
Current assignee: Weifang Chief Tongfan Furniture Technology Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-12-31
Anticipated expiration: 2031-04-09

Abstract

The utility model discloses a seat base and a child seat using the same, wherein the seat base comprises a bottom shell, and a self-locking roller mechanism is arranged on the lower side surface of the bottom shell; the self-locking roller mechanism comprises a walking wheel, and the walking wheel is rotatably arranged on a wheel shaft; two supporting seats are arranged on the lower side surface of the bottom shell, and adjusting holes are formed in the supporting seats; an adjusting spring is arranged in the adjusting hole; a clamping groove is arranged on the lower end surface of the supporting seat and is communicated with the adjusting hole; the travelling wheel is positioned between the two supporting seats, and the wheel shaft is positioned in the clamping groove and extends into the adjusting hole; the adjusting spring is propped against the upper side of the wheel shaft; still include the locating part, the locating part is located the downside of shaft, avoids the shaft to deviate from the draw-in groove. The child seat using the seat base further comprises a seat assembly, wherein the seat assembly comprises seat legs and a seat, the lower ends of the seat legs are fixedly connected with the seat base, and the upper ends of the seat legs are adjustably connected with the seat through a connecting mechanism; not only can ensure the accurate sitting posture of the children, but also has good safety.

Description

Seat base and child seat using same

Technical Field

The utility model relates to the technical field of home furnishing, in particular to a seat base and a child seat using the same.

Background

The child seat is an essential important tool in writing or reading learning of children, and most of the learning seats on the market at present are provided with universal wheels so as to be convenient to move. However, children love naturally, and the learning chair with the structure is not convenient for cultivating good sitting postures of the children; the safety is not good enough, and the toy is easy to be used as a toy by children and can be pushed indoors or slide along with a chair when the children sit on the chair.

Disclosure of Invention

The utility model provides a seat base and a child seat using the same, and solves the technical problems that a child seat in the prior art is unreasonable in structure and poor in safety.

The technical scheme of the utility model is realized as follows: a seat base comprises a bottom shell, wherein a self-locking roller mechanism is arranged on the lower side surface of the bottom shell; the self-locking roller mechanism comprises a walking wheel, and the walking wheel is rotatably arranged on a wheel shaft; two supporting seats are arranged on the lower side surface of the bottom shell, adjusting holes are formed in the supporting seats, and the adjusting holes are opened on the lower end surface of the supporting seats; an adjusting spring is arranged in the adjusting hole; a clamping groove is formed in the lower end face of the supporting seat and communicated with the adjusting hole; the travelling wheel is positioned between the two supporting seats, and the wheel shaft is positioned in the clamping groove and extends into the adjusting hole; the wheel shaft can slide up and down in the clamping groove, and the adjusting spring abuts against the upper side of the wheel shaft; the limiting part is located on the lower side of the wheel shaft, and the wheel shaft is prevented from being separated from the clamping groove.

As a preferred technical scheme, an upper side surface of the bottom shell is concave to form an adjusting cavity, two linear shafts which are parallel to each other are fixedly installed in the adjusting cavity, and a linear bearing is arranged on each linear shaft; the connecting plate is used for connecting the seat component and is fixedly connected with the two linear bearings.

The child seat using the seat base further comprises a seat base assembly, the seat base assembly comprises seat legs and a seat base, the lower ends of the seat legs are fixedly connected with the seat base, and the upper ends of the seat legs are adjustably connected with the seat base through a connecting mechanism.

As a preferred technical scheme, the connecting mechanism comprises a main connecting rod, the lower side surface of the main connecting rod is fixedly connected with the seat legs, a front-back adjusting guide plate is fixed on the upper side surface of the main connecting rod, and the front-back adjusting guide plate extends towards the left side and the right side of the main connecting rod to form a guide wing plate; a sliding sleeve is fixed on the lower side surface of the seat, and the sliding sleeve is sleeved outside the guide wing plate, so that the seat can slide back and forth relative to the front and back adjusting guide plate and cannot move up and down; the chair also comprises a front and back locking structure for locking the chair seat on the main connecting rod.

As a preferred technical scheme, the front and rear locking structure comprises a locking adjusting plate and an adjusting elastic sheet, the locking adjusting plate is fixed on the main connecting rod, and a plurality of locking holes are formed in the locking adjusting plate; the lower side surface of the chair seat is provided with a locking piece mounting seat, and the adjusting elastic piece is rotatably mounted on the locking piece mounting seat; one end of the adjusting elastic sheet close to the locking adjusting plate is provided with a locking boss, and the shape of the locking boss is matched with the shape of the locking hole; a locking elastic piece is arranged between the adjusting elastic sheet and the chair seat and is positioned on one side of the locking sheet mounting seat, which is away from the locking adjusting plate.

As a preferable technical scheme, the seat leg comprises an outer sleeve, and the lower end of the outer sleeve is fixed on the seat base; the seat base is also fixedly provided with a screw rod which is positioned at the inner side of the outer sleeve; the outer side of the screw is screwed with a nut sleeve; the lifting pipe is sleeved outside the screw rod, and the lower end of the lifting pipe is fixedly connected with the nut sleeve; the lifting pipe is rotated, and the lifting pipe and the nut sleeve are lifted together relative to the screw rod.

As a preferred technical scheme, an inner guide plate is fixed at the upper end of the screw rod, and the outer contour of the inner guide plate is adapted to the cross section of an inner cavity of the lifting tube; an outer guide plate is fixed at the upper end of the outer sleeve, the outer guide plate is annular, and the inner diameter of the outer guide plate is matched with the outer diameter of the lifting pipe; the inner guide plate and the outer guide plate guide and support the lifting pipe together.

As a preferred technical scheme, the chair further comprises a chair back, wherein the chair back comprises a backrest mounting rod, and the backrest mounting rod is fixedly connected with the chair seat or the main connecting rod; the backrest mounting rod is provided with a main backrest.

As a preferred technical scheme, the backrest comprises an auxiliary backrest, wherein the auxiliary backrest is arranged on a backrest mounting rod or a main backrest through an adjustable backrest bracket; the adjustable backrest support comprises a connecting seat fixedly connected with the backrest mounting rod or the main backrest, a sliding cavity is arranged in the connecting seat, an auxiliary backrest connecting frame is arranged in the sliding cavity in a sliding mode, one end of the auxiliary backrest connecting frame extends into the sliding cavity, a backrest adjusting spring is arranged between the auxiliary backrest connecting frame and the sliding cavity, and the other end of the auxiliary backrest connecting frame is fixedly connected with the auxiliary backrest; the auxiliary backrest connecting frame is further provided with an adjusting groove, and the connecting seat is provided with a limiting screw which extends into the adjusting groove.

The seat further comprises a decorative plate which is fixed on the seat leg and can move along with the seat leg relative to the bottom shell.

The utility model has the beneficial effects that: the seat base adopts a self-locking roller mechanism, so that convenience can be provided when the seat needs to be moved, the moving direction is correspondingly limited, and the seat base can only move towards a desk and away from the desk and can be conveniently adjusted to a proper distance. The self-locking roller mechanism is matched with the linear bearing for use, so that the children can be ensured to reach a proper sitting posture distance. The child seat using the seat base overcomes the defects of the prior art, can ensure the accuracy of the sitting posture of a child, and has good safety.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a seat base;

FIG. 2 is a schematic structural view of a linear bearing;

FIG. 3 is a schematic structural view of a self-locking roller mechanism;

FIG. 4 is an enlarged view of a portion of area A of FIG. 3;

FIG. 5 is a schematic view of a leg of the seat;

FIG. 6 is a schematic view of a child seat;

FIG. 7 is a rear view of the child seat;

FIG. 8 is a perspective view of a child seat;

FIG. 9 is an enlarged partial view of area B of FIG. 8;

FIG. 10 is a schematic view of a chair back;

FIG. 11 is a perspective view of the chair back;

fig. 12 is a schematic view of the structure of the adjustable backrest support.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments, and the description of the embodiments is provided to help understanding of the present invention, but not to limit the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

A seat base comprises a bottom shell 11, an adjusting cavity 12 is formed in the upper side surface of the bottom shell 11 in a concave mode, two linear shafts 13 are fixedly installed in the adjusting cavity 12, and the two linear shafts 13 are parallel to each other, as shown in figures 1 and 2. The linear shaft 13 is provided with linear bearings 14, and further comprises a connecting plate 15 for connecting the seat assembly, and the two linear bearings 14 are fixedly connected with the connecting plate 15.

A self-locking roller mechanism is arranged on the lower side surface of the bottom shell 11, and as shown in fig. 3 and 4, the self-locking roller mechanism comprises a walking wheel 16, and the walking wheel 16 is rotatably arranged on a wheel shaft 18; two supporting seats 19 are arranged on the lower side surface of the bottom shell 11, adjusting holes are arranged in the supporting seats 19, and the adjusting holes are opened on the lower end surface of the supporting seats 19; an adjusting spring, not shown in the figure, is arranged in the adjusting hole. The lower end of the adjusting hole is provided with a clamping groove which is communicated with the adjusting hole; the travelling wheel 16 is positioned between the two supporting seats 19, and the wheel shaft 18 is clamped in the clamping groove and extends into the adjusting hole; the wheel shaft 18 can slide up and down in the clamping groove, and the adjusting spring abuts against the upper side of the wheel shaft 18; the wheel shaft locking device further comprises a limiting piece 17, wherein the limiting piece 17 is located on the lower side of the wheel shaft 18, and the wheel shaft 18 is prevented from being separated from the clamping groove. As shown in fig. 4, the stopper 17 is a large flat head screw.

When the bottom shell 11 has no downward acting force, the spring pushes the wheel shaft 18 downwards, so that the walking wheels 16 extend out of the lower side surface of the bottom shell 11, namely the lower side surface of the bottom shell 11 is separated from the ground, and the seat base 1 can be moved conveniently; if downward pressure is applied to the bottom shell 11, the road wheels 16 and the wheel shafts 18 are pressed back into the bottom shell 11, at this time, the adjusting springs are compressed, the lower side surface of the bottom shell 11 is in contact with the ground, and the seat base 1 cannot move due to the large friction force between the bottom shell 11 and the ground, so that locking is realized.

The child seat using the seat base further comprises a seat assembly as shown in fig. 6 and 7, wherein the seat assembly comprises seat legs 2 and a seat base 3, the lower ends of the seat legs 2 are fixedly connected with the seat base 1, and the upper ends of the seat legs are adjustably connected with the seat base 3 through a connecting mechanism 6

As shown in fig. 5, the seat leg 2 includes an outer tube 21, and the lower end of the outer tube 21 is fixed to the connecting plate 15; the outer sleeve 21 is fixed with a decorative plate 5, and the decorative plate 5 covers the upper side of the adjusting cavity 12 and can move along with the outer sleeve 21. A screw 23 is also fixedly arranged on the connecting plate 15, and the screw 23 is positioned on the inner side of the outer sleeve 21; the outer side of the screw 23 is screwed with a nut sleeve 22; the lifting pipe 24 is sleeved outside the screw 23, and the lower end of the lifting pipe 24 is fixedly connected with the nut sleeve 22; the lifting pipe 24 is rotated, and the lifting pipe 24 and the nut sleeve 22 are lifted and locked relative to the screw 23.

Further, an inner guide plate 26 is fixed at the upper end of the screw 23, and the outer contour of the inner guide plate 26 is adapted to the cross section of the inner cavity of the lifting tube 24; an outer guide plate 25 is fixed to the upper end of the outer sleeve 21, the outer guide plate 25 is annular, and the inner diameter of the outer guide plate 25 is adapted to the outer diameter of the elevator tube 24. The inner guide plate 26 and the outer guide plate 25 together guide and support the elevator tube 24.

As shown in fig. 8 and 9, the connecting mechanism 6 includes a main connecting rod 62, the lower side of the main connecting rod 62 is fixedly connected to the elevator tube 24, a front and rear adjusting guide plate 61 is fixed on the upper side of the main connecting rod 62, and the front and rear adjusting guide plate 61 extends to the left and right sides of the main connecting rod 62 to form a guide wing plate; the lower side surface of the seat 3 is fixedly provided with a sliding sleeve 34, and the sliding sleeve 34 is sleeved outside the guide wing plate, so that the seat 3 can slide back and forth relative to the front and back adjusting guide plate 61 and can not move up and down.

And a front and rear locking structure for locking the seat 3 to the main connecting rod 62. The front-back locking structure comprises a locking adjusting plate 63 and an adjusting elastic sheet 31, wherein the locking adjusting plate 63 is fixed on the main connecting rod 62, and preferably, the locking adjusting plate 63 is parallel to the front-back adjusting guide plate 61 and extends towards one side of the guide wing plate; the locking adjusting plate 63 is provided with a plurality of locking holes 64. A locking piece mounting seat 33 is arranged on the lower side surface of the seat 3, and the adjusting elastic piece 31 is rotatably mounted on the locking piece mounting seat 33; one end of the adjusting spring piece 31 close to the locking adjusting plate 63 is provided with a locking boss, and the shape of the locking boss is matched with that of the locking hole 64. A locking elastic piece 32 is further arranged between the adjusting elastic piece 31 and the seat 3, and the locking elastic piece 32 is positioned on one side of the locking piece mounting seat 33 departing from the locking adjusting plate 63. The locking elastic member 32 may employ a spring.

When pressure is applied to the end of the adjusting elastic piece 31, the locking elastic piece 32 is compressed, the locking boss is separated from the locking hole 64, and at the moment, the seat 3 can move back and forth under the interaction of the sliding sleeve 34 and the front and back adjusting guide plate 61 without falling off from the connecting mechanism 6; when the front and back positions of the seat 3 are adjusted to the proper positions, the acting force acting on the adjusting elastic sheet 31 is removed, and the locking boss is clamped into the locking hole 64, so that the seat 3 and the connecting mechanism 6 are locked.

The chair back 4 comprises a backrest mounting rod 41, and the backrest mounting rod 41 is fixedly connected with the chair seat 3 or the main connecting rod 62; the backrest mounting rod 41 is provided with an adjusting sleeve 45, and the adjusting sleeve 45 is fixed on the backrest mounting rod 41 through a locking rotating wheel 46 or is in contact locking. The main backrest 42 is fixed on the adjusting sleeve 45, and the main backrest 42 can be an integral type or two or three split types.

As shown in fig. 10 and 11, an auxiliary backrest 43 is further included, and the auxiliary backrest 43 corresponds to the waist of a human body, so that the comfort level can be improved. In order to enable an optimum reclining effect, the auxiliary backrest 43 is mounted on the backrest mounting bar 41 or the main backrest 42 by means of an adjustable backrest bracket 44. As shown in fig. 12, the adjustable backrest bracket 44 includes a connecting seat 441 fixedly connected to the backrest mounting rod 41 or the main backrest 42, a sliding cavity 442 is provided in the connecting seat 441, an auxiliary backrest connecting frame 444 is slidably provided in the sliding cavity 442, one end of the auxiliary backrest connecting frame 444 extends into the sliding cavity 442, and a backrest adjusting spring 443 is provided between the auxiliary backrest connecting frame 444 and the sliding cavity 442; the other end is fixedly connected with the auxiliary backrest 43. The auxiliary backrest connecting frame 444 is further provided with an adjusting groove 446, and the connecting seat 441 is provided with a limit screw 445 extending into the adjusting groove 446.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A seat base, its characterized in that: the device comprises a bottom shell (11), wherein a self-locking roller mechanism is arranged on the lower side surface of the bottom shell (11); the self-locking roller mechanism comprises a walking wheel (16), and the walking wheel (16) is rotatably arranged on a wheel shaft (18); two supporting seats (19) are arranged on the lower side surface of the bottom shell (11), adjusting holes are formed in the supporting seats (19), and the adjusting holes are opened on the lower end surface of each supporting seat (19); an adjusting spring is arranged in the adjusting hole; a clamping groove is formed in the lower end face of the supporting seat (19), and the clamping groove is communicated with the adjusting hole; the travelling wheel (16) is positioned between the two supporting seats (19), and the wheel shaft (18) is positioned in the clamping groove and extends into the adjusting hole; the wheel shaft (18) can slide up and down in the clamping groove, and the adjusting spring abuts against the upper side of the wheel shaft (18); the wheel shaft clamping device is characterized by further comprising a limiting piece (17), wherein the limiting piece (17) is located on the lower side of the wheel shaft (18), and the wheel shaft (18) is prevented from being separated from the clamping groove.

2. A seat base as claimed in claim 1, wherein: an adjusting cavity (12) is formed by the inner side of the upper side surface of the bottom shell (11) in a concave mode, two linear shafts (13) which are parallel to each other are fixedly installed in the adjusting cavity (12), and linear bearings (14) are arranged on the linear shafts (13); the chair seat assembly further comprises a connecting plate (15) used for connecting the chair seat assembly, and the connecting plate (15) is fixedly connected with the two linear bearings (14) at the same time.

3. A child seat employing the seat base of claim 1 or 2, wherein: still include the seat support subassembly, the seat support subassembly includes seat leg (2) and seat support (3), the lower extreme and seat base (1) fixed connection of seat leg (2), upper end are passed through coupling mechanism (6) and are connected with seat support (3) are adjustable.

4. The child seat of claim 3, wherein: the connecting mechanism (6) comprises a main connecting rod (62), the lower side surface of the main connecting rod (62) is fixedly connected with the seat legs (2), a front-back adjusting guide plate (61) is fixed on the upper side surface, and the front-back adjusting guide plate (61) extends towards the left side and the right side of the main connecting rod (62) to form a guide wing plate; a sliding sleeve (34) is fixed on the lower side surface of the seat (3), the sliding sleeve (34) is sleeved outside the guide wing plate, and the seat (3) can slide back and forth relative to the front and back adjusting guide plate (61) and cannot move up and down; also comprises a front and back locking structure which locks the chair seat (3) on the main connecting rod (62).

5. The child seat of claim 4, wherein: the front and back locking structure comprises a locking adjusting plate (63) and an adjusting elastic sheet (31), the locking adjusting plate (63) is fixed on the main connecting rod (62), and a plurality of locking holes (64) are formed in the locking adjusting plate (63); a locking piece mounting seat (33) is arranged on the lower side surface of the seat (3), and the adjusting elastic piece (31) is rotatably mounted on the locking piece mounting seat (33); one end of the adjusting elastic sheet (31) close to the locking adjusting plate (63) is provided with a locking boss, and the shape of the locking boss is matched with that of the locking hole (64); a locking elastic piece (32) is further arranged between the adjusting elastic piece (31) and the chair seat (3), and the locking elastic piece (32) is positioned on one side, departing from the locking adjusting plate (63), of the locking piece mounting seat (33).

6. The child seat of claim 3, wherein: the seat legs (2) comprise outer sleeves (21), and the lower ends of the outer sleeves (21) are fixed on the seat base (1); a screw rod (23) is also fixedly arranged on the seat base (1), and the screw rod (23) is positioned on the inner side of the outer sleeve (21); the outer side of the screw rod (23) is screwed with a nut sleeve (22); the lifting pipe (24) is sleeved outside the screw rod (23), and the lower end of the lifting pipe (24) is fixedly connected with the nut sleeve (22); the lifting pipe (24) is rotated, and the lifting pipe (24) and the nut sleeve (22) are lifted relative to the screw rod (23).

7. The child seat of claim 6, wherein: an inner guide plate (26) is fixed at the upper end of the screw rod (23), and the outer contour of the inner guide plate (26) is adapted to the cross section of an inner cavity of the lifting pipe (24); an outer guide plate (25) is fixed at the upper end of the outer sleeve (21), the outer guide plate (25) is annular, and the inner diameter of the outer guide plate (25) is adapted to the outer diameter of the lifting pipe (24); the inner guide plate (26) and the outer guide plate (25) guide and support the lifting pipe (24) together.

8. The child seat of claim 3, wherein: the chair back (4) comprises a backrest mounting rod (41), and the backrest mounting rod (41) is fixedly connected with the chair seat (3) or the main connecting rod (62); a main backrest (42) is mounted on the backrest mounting rod (41).

9. The child seat of claim 8, wherein: the backrest is characterized by further comprising an auxiliary backrest (43), wherein the auxiliary backrest (43) is arranged on the backrest mounting rod (41) or the main backrest (42) through an adjustable backrest bracket (44); the adjustable backrest bracket (44) comprises a connecting seat (441) fixedly connected with the backrest mounting rod (41) or the main backrest (42), a sliding cavity (442) is arranged in the connecting seat (441), an auxiliary backrest connecting frame (444) is arranged in the sliding cavity (442) in a sliding mode, one end of the auxiliary backrest connecting frame (444) extends into the sliding cavity (442), a backrest adjusting spring (443) is arranged between the auxiliary backrest connecting frame and the sliding cavity (442), and the other end of the auxiliary backrest connecting frame is fixedly connected with the auxiliary backrest (43); the auxiliary backrest connecting frame (444) is further provided with an adjusting groove (446), the connecting seat (441) is provided with a limiting screw (445), and the limiting screw (445) extends into the adjusting groove (446).

10. The child seat of claim 3, wherein: the seat is characterized by further comprising a decorative plate (5), wherein the decorative plate (5) is fixed on the seat legs (2) and can move along with the seat legs (2) relative to the bottom shell (11).