CN215226109U

CN215226109U - Anti-toppling chair

Info

Publication number: CN215226109U
Application number: CN202121694773.6U
Authority: CN
Inventors: 王仲华
Original assignee: Hangzhou Rongyun Stamping Parts Co ltd
Current assignee: Hangzhou Rongyun Stamping Parts Co ltd
Priority date: 2021-07-24
Filing date: 2021-07-24
Publication date: 2021-12-21
Anticipated expiration: 2031-07-24

Abstract

The application discloses prevent chair that topples over relates to the technical field of chair, and it includes seat main part, base and is used for connecting the lifter of seat main part and base, be provided with the bracing piece on the lifter, the bracing piece has two at least, the bracing piece includes interior pole and outer pole, outer pole one end with the base links to each other, outer pole cover is located on the interior pole, just interior pole with be provided with locating component between the outer pole. The application has the following effects: the stability of the chair is enhanced, and the safety risk coefficient of the chair is reduced.

Description

Anti-toppling chair

Technical Field

The application relates to the field of chairs, in particular to an anti-toppling chair.

Background

The chair is an indispensable tool in daily life, the lifting chair is widely used for rest in offices and families, and the structural stability of the lifting chair is particularly critical. Most of the existing office chairs can adjust the height to adapt to different working environments. When the chair is adjusted to be raised, the support center of the chair may be shifted upward, resulting in a reduction in structural stability; when the chair is adjusted to descend, the support center of the chair can deviate downwards, and the stability is strong.

With respect to the related art in the above, the inventors consider that: in the use process of the lifting chair, the anti-toppling performance is poor, and particularly when the lifting chair is heightened, the supporting center can be changed, so that the stability of the chair is reduced, and the safety risk coefficient is increased.

SUMMERY OF THE UTILITY MODEL

In order to enhance the stability of the chair and reduce the seat safety risk factor, the present application provides an anti-toppling chair.

The application provides a chair that prevents empting adopts following technical scheme:

the utility model provides a prevent chair that emptys, includes seat main part, base and is used for connecting the lifter of seat main part and base, be provided with the bracing piece on the lifter, the bracing piece has two at least, the bracing piece includes interior pole and outer pole, outer pole one end with the base links to each other, outer pole cover is located on the interior pole, just interior pole with be provided with locating component between the outer pole.

By adopting the technical scheme, when the chair rises, the supporting center changes, the stability of the chair is reduced, and the chair is easy to topple. The support rod on the lifting rod effectively increases the support surface and enhances the stability of the chair. The supporting rods are multiple, so that the stability of the chair is further enhanced.

Optionally, the positioning assembly includes an installation cylinder, a tightening member and a switch member, and the installation cylinder is sleeved on the outer rod and is fixedly connected with the outer rod; the abutting piece is movably arranged in the mounting cylinder and can abut against the inner rod; the switch member may lock the abutting member.

Through adopting above-mentioned technical scheme, an installation section of thick bamboo cup joints on the outer pole, and an installation section of thick bamboo is the installation basis of supporting tight piece and switching piece, supports tight piece and switching piece and all sets up in the sleeve, and the two can realize effectual linkage, and switching piece control supports the state of tight piece promptly.

Optionally, a fixing bolt penetrates through the mounting cylinder, a threaded connection hole matched with the fixing bolt is formed in the outer rod, and the fixing bolt is in threaded connection with the threaded connection hole.

By adopting the technical scheme, the installation barrel can be detachably connected by utilizing the bolt, so that the installation barrel is convenient to replace when damaged, and is convenient and fast.

Optionally, the switch piece includes cam and handle, be provided with the draw-in groove that is used for locking the handle on the installation section of thick bamboo, the cam rotate connect in the installation section of thick bamboo, just the cam with handle fixed connection, handle one end stretches out the installation section of thick bamboo, the cam can with it is tight to support the piece counterbalance.

Through adopting above-mentioned technical scheme, exert force on the handle, drive the cam and rotate, and then the cam supports tightly to support the piece to reach the effect of linkage, make locating component play and support tight effect, stability when having strengthened the bracing piece follow-up.

Optionally, the abutting piece comprises an abutting plate arranged in the installation barrel in a sliding manner, a contact block arranged on the abutting plate and a reset piece used for unlocking and driving the abutting plate to reset, the contact block is fixedly connected to the abutting plate, and the contact block can be abutted to the cam.

Through adopting above-mentioned technical scheme, support tight board, contact block, reset the simple setting of piece, effectual realized supporting tightly and supported the effect that resets after tight, simple structure, convenient and fast.

Optionally, a connecting column is arranged on the abutting plate, a sliding cavity is formed in the inner wall of the mounting cylinder, and one end of the connecting column can extend into the sliding cavity.

Through adopting above-mentioned technical scheme, the setting of connecting post has further strengthened the stability of supporting tight piece for support tight board in the motion process, be difficult for taking place about skew.

Optionally, the piece that resets includes reset spring and limit stop, reset spring cover is located the spliced pole stretches into the one end in the chamber that slides, just the spliced pole stretches into and slides one of serving in the chamber and be provided with limit stop, and reset spring one end is inconsistent with limit stop, and the other end is contradicted with the intracavity wall that slides.

Through adopting above-mentioned technical scheme, when pressing the handle, the cam compresses tightly the contact piece, and then supports the tight board and compress tightly interior pole. When the handle is pulled, the reset spring resets, and then releases the conflict of pressure strip and interior pole, and limit stop's setting can the effectual risk that reduces the chamber that slides that the spliced pole breaks away from.

Optionally, the abutting plate penetrates through the outer rod, a sliding groove matched with the abutting plate is formed in the inner rod, and the abutting plate can be pushed into the sliding groove and abuts against the inner rod tightly.

Through adopting above-mentioned technical scheme, support tight board and support interior pole tightly, the setting of sliding tray has carried out the position to supporting tight board and has injectd for supporting tight board and being difficult for taking place about the skew, strengthened the stable locking of bracing piece, and use more durable.

Optionally, the seat main body includes a stool disposed on the inner rod and a backrest rotatably connected to the stool, and the backrest is rotatably provided with a support rod.

Through adopting above-mentioned technical scheme, the setting of bracing piece can effectual reduction back down motion's probability, and then has also strengthened the stability of chair.

Optionally, the support rod is provided with an anti-slip sleeve.

Through above-mentioned technical scheme, strengthened the frictional force of bracing piece with ground contact, further strengthened the stability of chair.

To sum up, the application comprises the following beneficial technical effects:

1. when the chair is lifted, the supporting center is changed, the stability of the chair is reduced, the chair is easy to topple, the supporting surface is effectively increased due to the arrangement of the supporting rods, and the stability of the chair is enhanced;

2. the positioning assembly can control the length of the supporting rod, when the height of the seat is adjusted, the fastening state of the handle is released, the cam removes the compression with the contact block, the return spring resets, the abutting plate releases the abutting with the inner rod, and the supporting rod can ascend and descend along with the ascending and descending of the chair at the moment. After the adjustment is finished, the chair is returned to the handle fastening state again, so that the risk of toppling of the chair is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a support rod in an embodiment of the present application;

FIG. 3 is an exploded view of a positioning assembly in an embodiment of the present application;

fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

Reference numerals: 1. a base; 2. a stool; 3. a backrest; 4. a lifting rod; 41. a cylinder body; 42. a piston rod; 5. a support bar; 51. an inner rod; 52. an outer rod; 6. a positioning assembly; 61. mounting the cylinder; 62. an abutting piece; 63. a switch member; 611. fixing the bolt; 631. a cam; 632. a handle; 621. a propping plate; 622. a contact block; 623. a reset member; 6231. a return spring; 6232. a limit stop block; 7. connecting columns; 8. a sliding groove; 9. an anti-slip sleeve.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Referring to fig. 1, the embodiment of the present application discloses an anti-toppling chair. The anti-toppling chair comprises a base 1, a lifting rod 4, a stool 2 and a backrest 3. The lifter 4 is the cylinder, and the lifter 4 is vertical to be set up on base 1, and the lifter 4 includes cylinder body 41 and piston rod 42, and piston rod 42 one end fixed connection is on sitting bench 2, and the other end is connected on cylinder body 41, cylinder body 41 bottom surface and base 1 fixed connection. The base 1 is horizontally arranged on the ground, the stool 2 is horizontally arranged on the piston rod 42, and the backrest 3 is fixedly and obliquely arranged on the stool 2. The base 1, the lifting rod 4, the stool 2 and the backrest 3 together form a seat main body.

Referring to fig. 1 and 2, the piston rod 42 is rotatably provided with a support rod 5, the support rod 5 includes an outer rod 52 and an inner rod 51, one end of the outer rod 52 is sleeved on the inner rod 51, the other end of the outer rod 52 is rotatably provided on the piston rod 42, and one end of the inner rod 51, which is far away from the outer rod 52, is in contact with the ground. The anti-skid sleeve 9 is arranged at one end of the inner rod 51 contacting with the ground. The end of the outer pole 52 near the ground is provided with a positioning assembly 6. In this embodiment, the number of the support rods 5 on the telescopic rod is three, but not limited to three.

The backrest 3 is also rotatably provided with a support rod 5, and in this embodiment, the support rod 5 is one, but not limited to one, on the backrest 3.

Referring to fig. 3 and 4, the positioning assembly 6 includes an installation cylinder 61, a switch 63 and a support member 62, the installation cylinder 61 is sleeved on one end of the outer rod 52 close to the ground, a fixing bolt 611 penetrates through the installation cylinder 61, a threaded connection hole is formed in the outer rod 52, and the fixing bolt 611 penetrates through the installation cylinder 61 and is in threaded connection with the threaded connection hole.

The switch member 63 includes a cam 631 and a handle 632, the cam 631 and the handle 632 are integrally provided, and one end of the handle 632 extends out of the mounting tube 61. The cam 631 is rotatably disposed through the mounting tube 61, the cam 631 is rotatably connected to the mounting tube 61 through a rotating shaft, and the rotating shaft is located on a side of the center line of the cam 631 away from the fastening plate 621.

The abutting member 62 includes a contact block 622, an abutting plate 621, and a reset member 623. The contact block 622 is fixedly connected to the fastening plate 621 and located at the center of the fastening plate 621, and the contact block 622 can contact the cam 631. The abutting plate 621 penetrates through one end of the outer rod 52 close to the ground, the inner rod 51 is provided with a sliding groove 8 along the length direction, and the abutting plate 621 can abut against the inner rod 51 through the sliding groove 8. The fastening plate 621 is fixed with two connection posts 7, and the two connection posts 7 are located on two sides of the contact block 622 in the length direction. Offer the chamber of sliding in the installation section of thick bamboo 61, the one end in chamber of sliding has with external communicating opening, 7 one end of spliced pole can stretch into the intracavity of sliding, piece 623 that resets is located spliced pole 7 and stretches into the one end in chamber of sliding, piece 623 that resets includes reset spring 6231 and limit stop 6232, the one end in the chamber of sliding is located spliced pole 7 to reset spring 6231 cover, still be fixed with limit stop 6232 on the spliced pole 7, limit stop 6232 is located spliced pole 7 and stretches into the one end in chamber of sliding, 6231 one end of reset spring and the intracavity wall fixed connection that slides, the other end and limit stop 6232 fixed connection. When the return spring 6231 is in the reset state, the limit stopper 6232 can block the return spring 6231 from being separated from the sliding chamber.

The implementation principle of the chair capable of preventing toppling is as follows:

in the initial state, the handle 632 is in the fastening state, and the cam 631 presses the contact block 622, so that the pressing plate presses against the inner rod 51. When the height of the chair is adjusted, the fastening state of the handle 632 is released, the cam 631 releases the compression with the contact block 622, the return spring 6231 is reset, the abutting plate releases the abutting with the inner rod 51, and the support rod 5 can lift along with the lifting of the chair, so that the risk of the chair toppling is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An anti-toppling chair, comprising a seat body, a base (1) and a lifting rod (4) for connecting the seat body and the base (1), characterized in that: the novel lifting rod is characterized in that supporting rods (5) are arranged on the lifting rod (4), at least two supporting rods (5) are arranged, each supporting rod (5) comprises an inner rod (51) and an outer rod (52), one end of each outer rod (52) is connected with the base (1), the outer rods (52) are sleeved on the inner rods (51), and positioning components (6) are arranged between the inner rods (51) and the outer rods (52).

2. An anti-toppling chair according to claim 1, wherein: the positioning assembly (6) comprises an installation cylinder (61), a propping piece (62) and a switch piece (63), wherein the installation cylinder (61) is sleeved on the outer rod (52) and is fixedly connected with the outer rod (52); the abutting piece (62) is movably arranged in the mounting cylinder (61), and the abutting piece (62) can abut against the inner rod (51); the switch member (63) can lock the abutting member (62).

3. An anti-toppling chair according to claim 2, wherein: the mounting cylinder (61) is provided with a fixing bolt (611) in a penetrating mode, the outer rod (52) is provided with a threaded connecting hole matched with the fixing bolt (611), and the fixing bolt (611) is in threaded connection with the threaded connecting hole.

4. An anti-toppling chair according to claim 2, wherein: switch spare (63) include cam (631) and handle (632), be provided with the draw-in groove that is used for locking handle (632) on installation section of thick bamboo (61), cam (631) rotate connect in installation section of thick bamboo (61), just cam (631) with handle (632) fixed connection, handle (632) one end is stretched out installation section of thick bamboo (61), cam (631) can with it offsets tightly to support piece (62).

5. An anti-toppling chair according to claim 4, wherein: support piece (62) including slide set up in installation section of thick bamboo (61) support tight board (621), set up contact piece (622) on supporting tight board (621) and be used for removing to lock the back drive and support the piece (623) that resets that tight board (621) reset, contact piece (622) fixed connection in support tightly on board (621), contact piece (622) can with cam (631) are inconsistent.

6. An anti-toppling chair according to claim 5, wherein: the tightening plate (621) is provided with a connecting column (7), the inner wall of the mounting cylinder (61) is provided with a sliding cavity, and one end of the connecting column (7) can extend into the sliding cavity.

7. An anti-toppling chair according to claim 6, wherein: reset piece (623) including reset spring (6231) and limit stop (6232), reset spring (6231) cover is located spliced pole (7) stretch into the one end in the chamber that slides, just spliced pole (7) stretch into the chamber that slides and serve and be provided with limit stop (6232), and reset spring (6231) one end is inconsistent with limit stop (6232), and the other end is contradicted with the intracavity wall that slides.

8. An anti-toppling chair according to claim 5, wherein: the tightening plate (621) penetrates through the outer rod (52), the inner rod (51) is provided with a sliding groove (8) matched with the tightening plate (621), and the tightening plate (621) can be pushed into the sliding groove (8) and tightly abuts against the inner rod (51).

9. An anti-toppling chair according to claim 1, wherein: the seat body comprises a sitting stool (2) arranged on an inner rod (51) and a backrest (3) connected to the sitting stool (2) in a rotating mode, and a supporting rod (5) is arranged on the backrest (3) in a rotating mode.

10. An anti-toppling chair according to claim 1, wherein: the support rod (5) is provided with an anti-skid sleeve (9).