CN214072646U - Seat with adjustable seat depth - Google Patents

Abstract

The utility model discloses a seat depth-adjustable type seat, include: a cushion support frame; the supporting plate is fixedly arranged on the cushion supporting frame; the seat shell is arranged on the supporting plate and drives the cushion to move back and forth when sliding relative to the supporting plate; the clamping groove is arranged on the side wall of one side of the supporting plate along the length direction of the supporting plate; the locking piece is hinged to the bottom of the seat shell through a fulcrum and is provided with a lifting part and a locking part which are respectively arranged on two sides of the fulcrum, the locking part is provided with a plurality of clamping teeth, and the lifting part is heavier than the locking part; when the lifting part is lifted upwards and overturned, the locking part is driven to overturn downwards to force the latch to be separated from the clamping groove, and the seat shell can drive the cushion to slide relative to the supporting plate; when the seat shell drives the seat cushion to move to the designated position, the lifting part naturally falls under the action of self gravity to drive the locking part to turn upwards, and the clamping teeth are inserted into the corresponding clamping grooves; when the seat shell moves to the designated position, the lifting part naturally falls, the latch is inserted into the corresponding clamping groove, the locking action is automatically completed, and the operation is convenient and fast.

Description

Seat with adjustable seat depth

Technical Field

The utility model relates to a seat field, more specifically the utility model relates to a seat is adjustable deeply seat.

Background

The chair is a necessary product for daily life and work of people, and a good chair can provide good support for a user and make the user feel comfortable. Similarly, the learning chair is a necessary product for students during learning, and the learning chair with good comfort level can greatly improve the learning efficiency of the students and is also beneficial to the physical health of the students. Most of the existing study chairs are relatively fixed in each component, and the seat depth can not be adjusted at all. Therefore, the learning chair cannot be completely suitable for children with different school ages and different heights. In particular, for a short child, the back of the user is too far away from the backrest due to the depth of the long learning chair seat, the back of the user cannot be supported but is suspended, the user feels fatigue after long-term use, and the spine of the child is not supported and supported correctly and is not twisted unconsciously, so that the development of the spine of the child is influenced after long-term development; for a user with a high head, the leg of the existing seat cannot be completely unfolded due to the depth of the seat, the existing seat is easy to fatigue, feet of the user move around, the user is unstable in sitting, and the learning efficiency is seriously influenced.

However, in the study chair capable of adjusting the seat depth in the market at present, the adjusting component is complex in structure, more parts are needed, the manufacturing cost of manufacturers is increased, and the study chair is inconvenient to maintain when a fault occurs.

Disclosure of Invention

In order to solve the technical problem, the utility model aims to provide a seat with adjustable seat depth, which comprises a supporting plate and a seat shell which can slide relatively, wherein the side wall of the supporting plate is provided with a plurality of clamping grooves, the seat shell is hinged with a locking piece, the locking piece utilizes the seesaw principle and self gravity, one end of the locking piece is light, the other end of the locking piece is heavy, and when the heavy end of the locking piece is lifted upwards under the action of external force, the light end is separated from the clamping grooves for unlocking; when no external force acts, the heavy end droops and the light end reversely rotates upwards and is inserted into the clamping groove to realize automatic locking; simple structure and convenient installation.

Solve the technical problem, the utility model discloses take following technical scheme:

a seat with adjustable seat depth, comprising:

the cushion support frame extends along the horizontal direction;

the supporting plate is fixedly arranged on the cushion supporting frame;

the seat shell is provided with a cushion and can slide along the length direction of the supporting plate, and the seat shell drives the cushion to move back and forth when sliding relative to the supporting plate;

the clamping grooves are formed in the side wall of one side of the supporting plate along the length direction of the supporting plate;

the locking piece is hinged to the bottom of the seat shell through a fulcrum, a lifting part and a locking part which are respectively arranged on two sides of the fulcrum are arranged on the locking piece, a plurality of clamping teeth are arranged on the locking part, and the lifting part is heavier than the locking part; when the lifting part is lifted upwards and overturned, the locking part is driven to overturn downwards to force the latch to be separated from the clamping groove, and the seat shell can drive the cushion to slide relative to the supporting plate; when the seat shell drives the cushion to move to the designated position, the lifting part naturally falls under the action of self gravity to drive the locking part to turn upwards, and the latch is inserted into the corresponding clamping groove.

In a further scheme, the bottom of sitting the shell is equipped with the sliding tray that extends along self length direction, the layer board is located in the sliding tray, the length direction that the sliding tray can be followed to the sitting shell for the layer board slides, the bottom of sitting the shell still is provided with the articulated groove that extends along self width direction, articulated trench in one side of sliding tray and with the sliding tray intercommunication, the locking piece is located the articulated inslot, the locking piece is provided with the axis of rotation in fulcrum department, the axis of rotation is followed the width direction of locking piece extends, just axis of rotation head and tail both ends pass respectively the both sides cell wall in articulated groove with the sitting shell rotates and is connected.

In a further scheme, the seat further comprises two locking blocks, the bottom of the seat shell is also provided with a rotating groove, the rotating groove is arranged along the length direction of the seat shell, the rotating groove is communicated with the hinge groove, bosses are arranged at the head end and the tail end of the rotating groove, and the two ends of the rotating shaft respectively abut against the head boss and the tail boss in the rotating groove; two locking blocks all are located rotate the inslot, two locking block branches are located the both sides of locking piece, the up end of locking block with the axial face laminating of axis of rotation, just be provided with the lug that extends along the length direction of axis of rotation on one side lateral wall of locking block, the lug on two locking blocks passes through screw fixed connection with two bosss of rotation inslot head and tail respectively.

In a further scheme, a connecting block is arranged on the upper end face of the locking piece, the rotating shaft penetrates through the connecting block and is fixedly connected with the connecting block, and the rotating shaft and the connecting block are located between the bottom of the hinged groove and the locking piece.

In a further scheme, the bottom end surface of the seat shell is an arc-shaped surface which is bent upwards from the center to the peripheral side, and the lifting part extends towards the direction far away from the supporting plate and is exposed out of the notch of the hinge groove.

In a further scheme, a guide part is arranged between the supporting plate and the seat shell, a guide through groove is formed in the seat shell along the length direction of the seat shell, the guide part comprises a limiting block, the limiting block comprises a limiting part and a connecting part, the connecting part is inserted into the guide through groove and is relatively fixed with the supporting plate, the limiting part is exposed out of the guide through groove, and the width of the limiting part is greater than the width of the guide through groove.

In a further scheme, the guide still includes the mount pad, the mount pad with layer board fixed connection, the stopper pass through the screw install in on the mount pad, connecting portion and mount pad butt cooperation, the head end width of stopper is greater than the groove width that the groove led to the groove in direction constitutes spacing portion, just spacing portion surpass connecting portion the part with constitute the spout between the mount pad, sit the shell in the part that leads to the groove both sides is located the spout and with spout sliding fit.

In a further scheme, the cushion support frame comprises two cantilever beams which are arranged in parallel at intervals, the cantilever beams extend forwards from the back of the seat, and the support plate is lapped on the two cantilever beams and is fixedly connected with the cantilever beams.

Advantageous effects

1. Only need to go up to draw the portion of carrying of locking piece, just can drive locking portion upset downwards and force latch and draw-in groove to break away from, the seat shell just can drive the cushion and slide for the layer board, realizes the regulation of seat depth, convenient and fast.

2. Because the lifting part of the locking piece is heavier than the locking part, when the seat shell can drive the cushion to move to the designated position, the lifting part naturally falls under the action of self gravity, and the locking part can be driven to overturn upwards so that the latch is inserted into the corresponding clamping groove to complete locking. The locking action can be automatically finished without manual adjustment of a user, and the locking device is time-saving, labor-saving, convenient and quick.

Drawings

Fig. 1 is a schematic perspective view and a partial enlarged view of a seat depth adjustable type seat in a bottom view state;

FIG. 2 is a partial isometric view and a partial enlarged view of a seat depth adjustable seat;

FIG. 3 is a schematic perspective view of a seat with adjustable seat depth without a cushion and a seat shell top cover;

FIG. 4 is a schematic perspective view of a seat with adjustable seat depth without a cushion and a seat shell;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a partial exploded view and a partial enlarged view of the seat depth adjustable seat from another view angle;

FIG. 7 is a partial side exploded view of the seat depth adjustable type seat;

FIG. 8 is a schematic view of the guide member;

FIG. 9 is a schematic view of the locking block;

fig. 10 is a schematic structural view of a seat pan part in an exploded state in the seat depth adjustable type seat.

The reference numerals in the schematic drawings illustrate:

1-backrest support, 2-backrest, 3-cushion support, 4-pallet, 5-cushion, 6-seat shell, 7-neck, 8-lock, 9-fulcrum, 10-lifting part, 11-lock, 12-latch, 13-sliding groove, 14-hinge groove, 15-rotation shaft, 16-connection block, 17-positioning hole, 18-rotation groove, 19-boss, 20-locking block, 21-lug, 22-guide, 23-guide through groove, 24-mounting seat, 25-stopper, 26-stopper, 27-connection part, 28-sliding groove, 29-support column, 30-cantilever beam, 31-upper cover, 32-lower cover, 33-cushion support, 34-sleeve, 35-connecting tube.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-9, the present embodiment provides a seat with adjustable seat depth, which includes a backrest support frame 1 and a seat cushion support frame 3. Wherein the backrest support frame 1 extends along the vertical direction, and the backrest support frame 1 is provided with a backrest 2. The cushion support frame 3 extends along the horizontal direction and is connected with the backrest support frame 1, and the cushion support frame 3 is positioned below the backrest 2 in the vertical direction. A supporting plate 4 is fixedly arranged on the cushion supporting frame 3, a seat shell 6 is further arranged on the supporting plate 4, and a cushion 5 is arranged on the seat shell 6. The seat shell 6 can slide along the length direction of the supporting plate 4. When the seat shell 6 slides relative to the supporting plate 4, the seat shell 6 drives the seat cushion 5 to move close to or away from the backrest 2.

In the present embodiment, as shown in fig. 2, 5 and 6, a plurality of locking grooves 7 are provided on one side wall of the supporting plate 4 along the length direction of the supporting plate 4. And the seat shell 6 is provided with a locking piece 8. The locking piece 8 is hinged to the bottom of the seat shell 6 through a fulcrum 9. The locking piece 8 is provided with a pulling part 10 and a locking part 11 which are respectively arranged at two sides of the fulcrum 9. Wherein, a plurality of latch teeth 12 are arranged on the locking part 11. The weight of the lifting part 10 is larger than that of the locking part 11, when the seat is used daily, the latch 12 on the locking part 11 is inserted into the corresponding clamping groove 7 to limit the position between the seat shell 6 and the supporting plate 4, and the seat shell 6 and the supporting plate 4 are prevented from sliding relatively. When no exogenic action down, locking portion 11 remains the perk posture of upwards overturning all the time, but because the top of locking portion 11 receives spacingly with sitting 6 bottoms of shell, the latch 12 of locking portion 11 is located draw-in groove 7 all the time and accomplishes spacingly, sits shell 6 and layer board 4 relatively fixed.

When the user needs to adjust the seat depth, the user automatically pulls the lifting part 10 upwards to force the lifting part 10 to turn upwards; the lifting part 10 drives the locking part 11 to turn downwards to force the latch 12 to disengage from the slot 7, so that the seat shell 6 can drive the seat cushion 5 to slide relative to the supporting plate 4. The user slides the seat shell 6 according to the self requirement to adjust the seat depth of the seat. When the seat shell 6 drives the seat cushion 5 to move to the position required by the user, the user only needs to release the lifting part 10 of the locking piece 8. Because the weight of the lifting part 10 of the locking piece 8 is greater than that of the locking part 11, the lifting part 10 naturally falls under the action of self gravity to drive the locking part 11 to turn upwards, and the latch 12 on the locking part 11 is inserted into the clamping groove 7 at the corresponding position to complete locking. The device only needs to lift the lifting part 10 of the locking piece 8 upwards to complete unlocking, and the seat shell 6 can drive the seat cushion 5 to slide relative to the supporting plate 4, so that the seat depth is adjusted conveniently and quickly. And because the lifting part 10 of the locking piece 8 is heavier than the locking part 11, after the depth action of the seat is adjusted, a user can automatically complete the locking action by the gravity of the lifting part 10 by loosening the locking piece 8, so that the time and labor are saved.

As a preferred installation manner, please refer to fig. 1 and 6, a sliding groove 13 extending along the length direction of the seat shell 6 is formed at the bottom of the seat shell 6, the support plate 4 is located in the sliding groove 13, and the seat shell 6 can slide relative to the support plate 4 along the length direction of the sliding groove 13. Meanwhile, the bottom of the seat shell 6 is also provided with a hinge groove 14 extending along the width direction of the seat shell, the hinge groove 14 is positioned on one side of the sliding groove 13 and communicated with the sliding groove 13, and the notch of the hinge groove 14 communicated with the sliding groove 13 is opposite to the clamping groove 7 on the supporting plate 4. The locking piece 8 is located the hinge groove 14, and the locking piece 8 is provided with axis of rotation 15 in fulcrum 9 department, and axis of rotation 15 extends along the width direction of locking piece 8, and 15 head and the tail both ends of axis of rotation pass respectively hinge groove 14 both sides cell wall with the chassis is rotated and is connected. Hold layer board 4 through sliding tray 13 and hide layer board 4, and hold locking piece 8 and hide locking piece 8 through hinge groove 14, not only make the outward appearance more pleasing to the eye, also make parts such as locking piece 8 be difficult to receive the collision of foreign object, improve life. And in order to ensure that there is sufficient space so that the locking member 8 can be rotated and unlocked, the upper end surface of the locking member 8 is provided with a connecting block 16, the rotating shaft 15 penetrates through the connecting block 16 and is fixedly connected with the connecting block 16, and the rotating shaft 15 and the connecting block 16 are positioned between the bottom of the hinge groove 14 and the locking member 8.

In order to facilitate the user to conveniently operate the lifting part 10, the bottom end surface of the seat shell 6 in the scheme is an arc-shaped surface which is bent upwards from the center to the peripheral side, and the lifting part 10 extends towards the direction away from the supporting plate 4 and is exposed out of the notch of the hinge groove 14, so that the user can conveniently hold the lifting part 10 to lift.

The bottom of the seat shell 6 is also provided with a rotating groove 18, the rotating groove 18 is arranged along the length direction of the seat shell 6, the rotating groove 18 is communicated with the hinge groove 14, bosses 19 are arranged at the head end and the tail end of the rotating groove 18, and the two ends of the rotating shaft 15 are respectively abutted against the two bosses 19 at the head end and the tail end in the rotating groove 18. Still include two locking blocks 20 in this scheme, as shown in fig. 1, 2, 5, 9, two locking blocks 20 all are located and rotate groove 18, and two locking blocks 20 are located the both sides of locking piece 8 respectively. Wherein the up end of every locking block 20 all is equipped with sunken and with the shaft surface laminating of axis of rotation 15, avoids influencing axis of rotation 15 and rotates. And the side wall of one side of the locking block 20 is provided with a lug 21 extending along the length direction of the rotating shaft 15, and the lugs 21 on the two locking blocks 20 are respectively fixedly connected with the head and the tail of the two bosses 19 in the rotating groove 18 through screws. The rotating shaft 15 is limited by the locking block 20, and the relative fixation of the rotating shaft 15 and the seat shell 6 in the vertical direction is kept. And in the use process of the seat, if the locking piece 8 is broken or the clamping groove 7 is broken, and the like. The locking piece 8 can be detached and replaced conveniently and quickly only by turning the screws on the locking block 20 and detaching the locking block 20.

Meanwhile, a guide 22 is provided between the support plate 4 and the seat shell 6. And the seat shell 6 is provided with a guide through groove 23 along the length direction thereof. Specifically, as shown in fig. 7 and 10, the seat shell 6 includes an upper cover 31 and a lower cover 32 that are closed to each other. The cushion 5 is arranged on the upper cover 31, the periphery of the cushion 5 is wrapped into the periphery of the upper cover 31 through the covering cloth, and the cushion 5 is fixed on the seat shell 6 through the lock catch connection between the upper cover 31 and the lower cover 32. Wherein the guiding through-groove 23 is provided on the lower cover 32. And the above-mentioned guiding element 22 includes the limited block 25, this limited block 25 is in the form of T, it includes limited part 26 and interconnecting piece 27, wherein the interconnecting piece 27 is inserted into guiding the through slot 23 and kept relatively fixed with the brace 4. The limiting portion 26 is exposed out of the guide through groove 23, and the width of the limiting portion 26 is larger than the groove width of the guide through groove 23. The retainer 26 keeps the pallet 4 and the seat shell 6 fixed relative to each other in the vertical direction.

More specifically, as shown in fig. 3, 4, 8 and 10, in this embodiment, the guide 22 further includes a mounting seat 24, where the mounting seat 24 is fixedly connected to the surface of the supporting plate 4, for example, by welding. When the lower cover 32 is placed on the tray 4, the upper end portion of the mounting seat 24 is inserted into the guide through groove 23. Then, the limiting block 25 is mounted on the mounting seat 24 by screws, and the joint of the limiting block 25 and the mounting seat 24 is located in the guiding through groove 23 to form the connecting portion 27. And the width of the head end of the stopper 25 is larger than the width of the guide through groove 23 to form the stopper 26. A sliding groove 28 is formed between the part of the limiting part 26 laterally exceeding the connecting part and the mounting seat 24, the parts of the seat shell 6 at the two sides of the guiding through groove 23 are positioned in the sliding groove 28 and are in sliding fit with the sliding groove 28, and finally, an upper cover 31 is covered.

When the seat shell 6 slides relative to the supporting plate 4, the parts of the seat shell 6 at the two sides of the guide through groove 23 slide in the sliding grooves 28, and the guide through groove 23 plays a role in assisting the guide. And because the width of the head end of the limiting block 25 is greater than the groove width of the guide through groove 23 to form a limiting part 26, the seat shell 6 is limited in the vertical direction through the limiting part 26, and the seat shell 6 is prevented from being separated from the supporting plate 4.

And in this embodiment, the backrest support frame 1 includes two support columns 29, two support columns 29 all extend along the vertical direction, the head ends of two support columns 29 pass through connecting piece fixed connection, and be provided with the backrest 2 on two support columns 29. It should be noted that the vertical direction in the embodiment is not completely vertical, and has a certain inclination angle. More specifically, the cushion support frame 3 includes a cushion support member 33 and two outriggers 30, the cushion support member 33 includes two sleeves 34 and a connecting pipe 35 connecting the two sleeves 34, the sleeves 34 are sleeved on the support columns 29 and locked at corresponding positions by bolts, each outrigger 30 is welded to one sleeve 34, and each outrigger 30 extends in the horizontal direction. The outriggers 30 are vertically positioned below the backrest 2, and the support plate 4 is lapped on the two outriggers 30 and is fixedly connected with the outriggers 30. Support cushion and back 2 through two support columns 29, and adopt two outriggers 30 to carry out the bearing to layer board 4, improved the stability of its structure by a wide margin. And because the both ends of the bottom of layer board 4 all receive the support of outrigger 30, also avoided layer board 4 to hold the problem of rocking about when sitting.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (8)

1. A seat with an adjustable seat depth is characterized by comprising:

the cushion support frame extends along the horizontal direction;

the supporting plate is fixedly arranged on the cushion supporting frame;

the seat shell is provided with a cushion and can slide along the length direction of the supporting plate, and the seat shell drives the cushion to move back and forth when sliding relative to the supporting plate;

the clamping grooves are formed in the side wall of one side of the supporting plate along the length direction of the supporting plate;

the locking piece is hinged to the bottom of the seat shell through a fulcrum, a lifting part and a locking part which are respectively arranged on two sides of the fulcrum are arranged on the locking piece, a plurality of clamping teeth are arranged on the locking part, and the lifting part is heavier than the locking part; when the lifting part is lifted upwards and overturned, the locking part is driven to overturn downwards to force the latch to be separated from the clamping groove, and the seat shell can drive the cushion to slide relative to the supporting plate; when the seat shell drives the cushion to move to the designated position, the lifting part naturally falls under the action of self gravity to drive the locking part to turn upwards, and the latch is inserted into the corresponding clamping groove.

2. The seat with adjustable seat depth as claimed in claim 1, wherein the bottom of the seat shell is provided with a sliding groove extending along its length direction, the supporting plate is located in the sliding groove, the seat shell can slide relative to the supporting plate along the length direction of the sliding groove, the bottom of the seat shell is further provided with a hinge groove extending along its width direction, the hinge groove is located at one side of the sliding groove and is communicated with the sliding groove, the locking member is located in the hinge groove, the locking member is provided with a rotating shaft at a fulcrum, the rotating shaft extends along the width direction of the locking member, and two ends of the rotating shaft respectively penetrate through two side groove walls of the hinge groove to be rotatably connected with the seat shell.

3. The seat with the adjustable seat depth as claimed in claim 2, further comprising two locking blocks, wherein the bottom of the seat shell is further provided with a rotation groove, the rotation groove is arranged along the length direction of the seat shell, the rotation groove is communicated with the hinge groove, both ends of the head and the tail of the rotation groove are provided with bosses, and both ends of the rotation shaft respectively abut against the two bosses of the head and the tail in the rotation groove; two locking blocks all are located rotate the inslot, two locking block branches are located the both sides of locking piece, the up end of locking block with the axial face laminating of axis of rotation, just be provided with the lug that extends along the length direction of axis of rotation on one side lateral wall of locking block, the lug on two locking blocks passes through screw fixed connection with two bosss of rotation inslot head and tail respectively.

4. The seat with adjustable seat depth as claimed in claim 2, wherein the locking member is provided at an upper end thereof with a connecting block, the rotation shaft penetrates through the connecting block and is fixedly connected with the connecting block, and the rotation shaft and the connecting block are located between the bottom of the hinge groove and the locking member.

5. The seat with adjustable seat depth as claimed in claim 2, wherein the bottom end surface of the seat shell is an arc surface curving upward from the center to the peripheral side, and the pulling portion extends away from the supporting plate and is exposed out of the opening of the hinge slot.

6. The seat with the adjustable seat depth as claimed in claim 1, wherein a guiding member is disposed between the supporting plate and the seat shell, the seat shell is provided with a guiding through groove along a length direction of the seat shell, the guiding member includes a limiting block, the limiting block includes a limiting portion and a connecting portion, the connecting portion is inserted into the guiding through groove and is relatively fixed with the supporting plate, the limiting portion is exposed out of the guiding through groove, and a width of the limiting portion is greater than a groove width of the guiding through groove.

7. The seat with the adjustable seat depth as claimed in claim 6, wherein the guiding element further comprises a mounting seat, the mounting seat is fixedly connected with the supporting plate, the limiting block is mounted on the mounting seat through a screw, the connecting portion is in abutting fit with the mounting seat, the width of the head end of the limiting block is larger than the width of the guiding through groove to form the limiting portion, a sliding groove is formed between the portion of the limiting portion, which exceeds the connecting portion, and the mounting seat, and the portions of the seat shell, which are located on two sides of the guiding through groove, are located in the sliding groove and are in sliding fit with the sliding groove.

8. The seat with adjustable seat depth as claimed in claim 1, wherein the seat support frame comprises two spaced parallel outriggers extending from the rear to the front of the seat, and the support plate is disposed on and fixedly connected to the two outriggers.

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