CN212754913U

CN212754913U - Anti-falling height-adjustable office chair

Info

Publication number: CN212754913U
Application number: CN202020998968.9U
Authority: CN
Inventors: 吴尚辉
Original assignee: Lihua Office Furniture Co ltd
Current assignee: Lihua Office Furniture Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-03-23
Anticipated expiration: 2030-06-04

Abstract

The utility model provides a prevent down height-adjustable's office chair, includes the chassis, the chassis downside is fixed with the landing leg, and the equal fixed mounting of landing leg tip has the gyro wheel, fixed mounting has first electron push rod in the chassis, first electron push rod output end fixed mounting has stable piece, install battery and PLC control panel in the stable piece, last the power supply to the unit that needs the power consumption through the detachable battery, can charge after shift when insufficient voltage, the stable piece side is equipped with the recess, all installs first spring in the recess, the equal fixed mounting of first spring one end has the curved bar with recess sliding connection, fixed mounting has the seat support on the curved bar. The utility model discloses a first bracing piece and second bracing piece support the back of the chair, can provide a good holding power when the user has a rest, let the user rest at ease, fall down when needn't worry having a rest to promote the quality of having a rest, guarantee work efficiency.

Description

Anti-falling height-adjustable office chair

Technical Field

The utility model belongs to the technical field of office chair technique and specifically relates to a but prevent down height-adjusting's office chair.

Background

The rapid development of society drives the improvement of economic level, and as the second major economic entity in the world, the economic income and the consumption expenditure of the national people in China reach higher levels, so that the functional requirements and the quality requirements on living goods and working goods are higher and higher.

As the office chair that is indispensable of official working, the article types on the market are various, existing function singleness's lift office chair, but also have the massage armchair that the function is various but is unpractical, as the standard of modernized official working, office chair should provide good travelling comfort and stability for the worker as far as, in the office process, because user's figure and use custom are all inequality, therefore only the office chair suitability of liftable seat support is not high on the market, and the office chair cost with massage function is too high, the user also can't enjoy massage service during working, and does not have the practicality.

Generally, in the noon break, a user can lean back to the backrest of the office chair, the backrest of the office chair does not have stable support, and therefore the user often dares not to fall asleep completely, the sleeping quality is low, and the following working efficiency is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art, provide a but prevent down height-adjusting's office chair.

The utility model provides a its technical problem take following technical scheme to realize:

an office chair with adjustable height capable of preventing falling comprises a chassis, wherein supporting legs are fixed on the lower side of the chassis, idler wheels are fixedly mounted at the end parts of the supporting legs, first electronic push rods are fixedly mounted in the chassis, stabilizing blocks are fixedly mounted at the output ends of the first electronic push rods, a storage battery and a PLC control panel are mounted in the stabilizing blocks, grooves are formed in the side edges of the stabilizing blocks, first springs are mounted in the grooves, curved rods in sliding connection with the grooves are fixedly mounted at one ends of the first springs, a chair seat is fixedly mounted on the curved rods, supports are fixedly mounted on two sides of the chair seat, second electronic push rods are embedded in the supports, handrails are fixedly mounted at the output ends of the second electronic push rods, controllers are mounted on the outer side surfaces of the handrails, a supporting frame is fixedly mounted on one side of the chair seat, a backrest is fixedly mounted on, the utility model discloses a chair seat, including back, seat support, sensor, back, first bracing piece, back, opening chamber, back roof, seat support, sensor, back top, back side, opening chamber, a lateral wall fixed mounting in opening chamber has the electro-magnet, articulated in the opening chamber have first bracing piece, first bracing piece medial surface be equipped with the little magnetic path of electro-magnet adaptation, be equipped with the slip chamber in the first bracing piece, slip chamber roof fixed mounting has the second spring, second spring one end is connected with the second bracing piece, second bracing piece bottom articulates there is the supporting shoe.

Preferably, the front side of the handrail is provided with a groove, and the groove is internally provided with an extendable extension plate.

Preferably, the PLC control panel is connected with the sensor, the electromagnet, the controller, the first electronic push rod and the second electronic push rod.

Preferably, the first support rod, the second support rod and the support block are all made of carbon fiber composite materials, and friction rubber is arranged on the bottom surface of the support block.

Preferably, the top end of the supporting block is provided with a V-shaped groove, and the opening angle of the V-shaped groove is 120 degrees.

Preferably, the bottom end of the second support rod is semicircular, and the semicircular part is hinged with the support block in the V-shaped groove.

Preferably, the curved bars are made of nylon materials, and the angle between every two adjacent curved bars is.

Preferably, the crank has three connecting ends with the seat, the end remote from the backrest being on the central axis of the seat.

Preferably, the angle between the inclined cavity and the ground in the initial state is 146-149 degrees.

The utility model has the advantages that:

1. the utility model discloses a first bracing piece and second bracing piece support the back of the chair, can provide a good holding power when the user has a rest, let the user rest at ease, fall down when needn't worry having a rest to promote the quality of rest, guarantee work efficiency.

2. The utility model discloses can reach best result of use through the height of adjustment handrail, reduce the arm tired out of sense of user when work, computer typewriting, the extension board that can take out at will in the handrail has compensatied handrail length fixed shortcoming moreover, can take out appropriate extension board according to the use position of sitting of difference, gives a holding power of arm, and then reduces work fatigue, promotes work efficiency.

3. The utility model discloses a ball, sensor in the skew chamber, the electro-magnet in addition, the angle that can perception user retroverted, the electro-magnet outage when the user retroverted and exceed 135, the supporting shoe just can support subaerial, provides a holding power for the back, and the effect of bradyseism can be given to user to the second spring between first bracing piece and second bracing piece in addition, and then avoids the user to lean on the phenomenon that the range was too big to fall down under the nothing preparation condition.

Drawings

FIG. 1 is a schematic side view of the present invention;

fig. 2 is a schematic front view of the present invention;

fig. 3 is a cross-sectional view taken along the line a-a of fig. 2 in accordance with the present invention;

fig. 4 is a cross-sectional view taken in the direction B-B of fig. 2 in accordance with the present invention;

fig. 5 is a schematic view of the middle support frame of the present invention.

In the figure: 1. a chassis; 2. a stabilizing block; 3. a chair seat; 4. a backrest; 11. a roller; 12. a first electronic push rod; 21. a first spring; 22. a curved bar; 31. a support; 32. a second electronic push rod; 33. a handrail; 34. a controller; 35. a support frame; 36. an extension plate; 41. a sensor; 42. a ball bearing; 43. an electromagnet; 44. a first support bar; 45. a second spring; 46. a second support bar; 47. a support block; 48. An inclined cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The embodiments of the present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1-5, the utility model relates to an anti-falling height-adjustable office chair, which comprises a chassis 1, wherein the lower side of the chassis 1 is fixed with a supporting leg, the end part of the supporting leg is fixedly provided with a roller 11, the chassis 1 is internally fixedly provided with a first electronic push rod 12, the output end of the first electronic push rod 12 is fixedly provided with a stabilizing block 2, the stabilizing block 2 is internally provided with a storage battery and a PLC control panel, the unit which needs to be used for power is continuously supplied with power through a detachable storage battery, the power can be charged after the office, the side edge of the stabilizing block 2 is provided with a groove, the groove is internally provided with a first spring 21, one end of the first spring 21 is fixedly provided with a curved bar 22 which is connected with the groove in a sliding manner, the curved bar 22 is fixedly provided with a chair seat 3, the curved bar 22 can provide a supporting force and a buffering force for the chair, the two, the support 31 is internally embedded with a second electronic push rod 32, the output end of the second electronic push rod 32 is fixedly provided with a handrail 33, the outer side surface of the handrail 33 is provided with a controller 34, one side of the seat 3 is fixedly provided with a support frame 35, the support frame 35 is fixedly provided with a backrest 4, the backrest 4 is internally provided with an inclined cavity 48, the top end of the inclined cavity 48 is far away from the seat 3, the top end of the inclined cavity 48 is provided with a sensor 41, the inclined cavity 48 is connected with a ball 42 in a sliding manner, the ball 42 can trigger the sensor 41, the outer side of the backrest 4 is provided with an open cavity, one side wall of the open cavity is fixedly provided with an electromagnet 43, the open cavity is hinged with a first support rod 44, the inner side surface of the first support rod 44 is provided with a small top wall matched with the electromagnet 43, the first support rod 44 is provided with a sliding cavity, one end of the second spring 45 is connected with a second support rod 46, and the bottom of the second support rod 46 is hinged with a support block 47.

In addition, in another embodiment, a groove is formed in the front side of the armrest 33, and an extendable extension plate 36 is disposed in the groove to increase the supporting length of the armrest 33.

In addition, in another embodiment, the PLC control panel is connected to the sensor 41, the electromagnet 43, the controller 34, the first electronic push rod 12, and the second electronic push rod 32, the ball 42 triggers the sensor 41 at the top end of the inclined cavity (48), the sensor 41 transmits a signal to the PLC control panel, the PLC control panel turns off the electromagnet 43, and then the electromagnet 43 eliminates the attraction force to the small magnetic block on the first support rod.

In addition, in another embodiment, the first support rod 44, the second support rod 46 and the support block 47 are all made of carbon fiber composite material, and friction rubber is arranged on the bottom surface of the support block 47, so that the carbon fiber composite material has the advantages of high strength and light weight, the overall weight of the office chair can be reduced, and the service life of the office chair can be ensured.

In addition, in another embodiment, a V-shaped groove is formed at the top end of the supporting block 47, the opening angle of the V-shaped groove is 120 °, the bottom end of the second supporting rod 46 is semicircular, and the semicircular part enters the V-shaped groove to be hinged with the supporting block 47, so that the supporting block 47 is prevented from being hurt to a user when falling to the ground vertically.

In addition, the curved bar 22 is made of nylon material, the angle between two adjacent curved bars 22 is 120 degrees, the curved bar 22 and the seat 3 have three connecting end points, the end point far away from the backrest 4 is on the central axis of the seat 3, the nylon curved bar 22 has certain toughness while guaranteeing high-strength support, and can provide certain feedback buffering force for a user, so that the experience effect of the user is improved, the 120-degree arrangement can provide the maximum stability, and the curved bar 22 perpendicular to the backrest 4 can provide higher stability for the user.

In addition, in another embodiment, the angle between the inclined cavity 48 and the ground in the initial state is 146-149 °, so as to ensure that the ball 42 triggers the sensor 41 before the support frame 35 reaches a critical value, thereby achieving a protection effect.

When the chair is in operation, the user can control the controller to adjust the second electronic push rod, so that the armrest reaches a height comfortable for typing, and when the chair is far away from the working platform, the extension rod can be drawn out, so that the support length is increased;

during noon break, a user presses the backrest backwards, when the angle between the backrest and the ground is close to 135 degrees, the ball triggers the sensor at the top end of the inclined cavity, the sensor transmits a signal to the PLC control panel, the PLC control panel powers off the electromagnet, the electromagnet eliminates attraction to the small magnetic block on the first supporting rod, the first supporting rod and the second supporting rod are perpendicular to the ground under the action of gravity, the supporting block can be supported on the ground, friction is added to rubber on the bottom surface of the supporting block, and then supporting force is given to the backrest;

when the user leans back in careless transition, lead to the support frame overload to produce and buckle, first bracing piece, second bracing piece can avoid the user directly to fall on the ground after supporting ground, and the second spring can cushion the effort that the second bracing piece fed back to first bracing piece, avoids first bracing piece one end to cause the injury to the user.

It should be emphasized that the embodiments described herein are illustrative and not restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also falls within the scope of the present invention, in any other embodiments derived by those skilled in the art according to the technical solutions of the present invention.

Claims

1. The utility model provides a prevent down adjustable height's office chair which characterized in that: comprises a chassis (1), the downside of the chassis (1) is fixed with supporting legs, the equal fixed mounting of the end part of the supporting legs has idler wheels (11), the internal fixed mounting of the chassis (1) has first electronic push rods (12), the output end of the first electronic push rods (12) is fixed with a stabilizing block (2), a storage battery and a PLC control panel are installed in the stabilizing block (2), the side edge of the stabilizing block (2) is provided with a groove, a first spring (21) is installed in the groove, one end of the first spring (21) is fixed with a curved bar (22) which is connected with the groove in a sliding manner, a chair seat (3) is fixedly installed on the curved bar (22), supports (31) are fixedly installed on the two sides of the chair (3), second electronic push rods (32) are embedded in the supports (31), handrails (33) are fixedly installed on the output ends of the second electronic push rods (32), controller (34) is installed to handrail (33) lateral surface, seat support (3) one side fixed mounting has support frame (35), fixed mounting has back (4) on support frame (35), be equipped with oblique chamber (48) in back (4), seat support (3) are kept away from on oblique chamber (48) top, sensor (41) are installed on oblique chamber (48) top, sliding connection has ball (42) in oblique chamber (48), the back (4) outside is equipped with the opening chamber, and a lateral wall fixed mounting in opening chamber has electro-magnet (43), and it has first bracing piece (44) to articulate in the opening chamber, first bracing piece (44) medial surface be equipped with the little magnetic path of electro-magnet (43) adaptation, be equipped with the slip chamber in first bracing piece (44), slip chamber roof fixed mounting has second spring (45), second spring (45) one end is connected with second bracing piece (46), the bottom of the second supporting rod (46) is hinged with a supporting block (47).

2. An anti-fall height-adjustable office chair as claimed in claim 1, wherein: the front side of the handrail (33) is provided with a groove, and the groove is internally provided with an extensible extension plate (36).

3. An anti-fall height-adjustable office chair as claimed in claim 1, wherein: the PLC control panel is connected with the sensor (41), the electromagnet (43), the controller (34), the first electronic push rod (12) and the second electronic push rod (32).

4. An anti-fall height-adjustable office chair as claimed in claim 1, wherein: the first supporting rod (44), the second supporting rod (46) and the supporting block (47) are all made of carbon fiber composite materials, and friction rubber is arranged on the bottom surface of the supporting block (47).

5. An anti-fall height-adjustable office chair as claimed in claim 1, wherein: the top end of the supporting block (47) is provided with a V-shaped groove, and the opening angle of the V-shaped groove is 120 degrees.

6. An anti-toppling height-adjustable office chair according to claim 5, wherein: the bottom end of the second supporting rod (46) is semicircular, and the semicircular part is hinged with the supporting block (47) in the V-shaped groove.

7. An anti-fall height-adjustable office chair as claimed in claim 1, wherein: the bent levers (22) are made of nylon materials, and the angle between every two adjacent bent levers (22) is 120 degrees.

8. An anti-toppling height-adjustable office chair according to claim 7, wherein: the curved rod (22) and the chair seat (3) are provided with three connecting end points, and the end point far away from the backrest (4) is arranged on the central axis of the chair seat (3).

9. An anti-fall height-adjustable office chair as claimed in claim 1, wherein: the angle of the inclined cavity (48) with the ground in the initial state is 146-149 degrees.