CN2569653Y

CN2569653Y - Setting and relieving mechanism for safety inclination of office chair

Info

Publication number: CN2569653Y
Application number: CN 02246877
Authority: CN
Inventors: 游玮美
Original assignee: Defeng International Co ltd
Current assignee: Defeng International Co ltd
Priority date: 2002-08-13
Filing date: 2002-08-13
Publication date: 2003-09-03
Anticipated expiration: 2012-08-13

Abstract

The utility model relates to a setting and relieving mechanism for the range of safe declining angles of office chair backs. Adjacent both sides of a bracket of a chair seat of an office chair and a bracket of a chair back are respectively provided with a male and a female supporting pieces with corresponding upper and lower declining directions. Pivot are connected to form a movable joint. A non-segment positioning air pressure rod is assembled between the bracket of the chair seat and the bracket of the chair back. The female supporting piece of the bracket of the chair back is fixedly provided with a frame seat on the outer sides of the back lower parts of the pivots for penetrating an inserting rod which is elastically penetrated through a corresponding through hole of the female supporting piece in normality. The penetrating end of the inserting rod is made to lean backwards along with the bracket of the chair back. The back declining edge of the male supporting piece of the bracket of the chair seat is blocked for setting the declining largest safe angle of the backward lean of the chair back. The inserting rod is pulled and moved outwards for quitting and disengaging from the male supporting piece. The bracket of the chair back can be leaned backwards into the state of horizontal positioning. The chair seat and the chair back can be used for carrying out package in the state of horizontal combination. Space is saved and transportation cost is reduced. The utility model is suitable for the transportation of domestic sales and export sales.

Description

Office chair back safety range of tilt angles is set cancel system

Technical field

The utility model relates to a kind of office chair back safety range of tilt angles and sets cancel system, refers to that especially a kind of chair back safety range of tilt angles of adjusting type office chair is set cancel system.

Background technology

Office chair is made up of institutes such as seat support, the chair back, handrail and chair pin basically at present, and installs the seat height guiding mechanism again additional, and chair back bevel angle adjustment mechanism.

In the existing office chair structure as shown in Figure 1, this seat bracket 10 adopts hinge 12 to articulate with the adjacent both sides of chairback brace 11, and seat bracket 10 does not have section location air pressure rod 13 with chairback brace 11 winding between the two, order about air pressure rod 13 and carry out expanding-contracting action by pulling control lever 14, adjust orientation angles to drive chairback brace 11 swings.

Chairback brace 11 down extends retaining system arm 15 in hinge 12 joints, chairback brace 11 can only be swung back swing to imaginary line position shown in Figure 1, maximum security standpoint that its layback is tilted is about 125 degree, avoiding office chair and occupant thereof because of crank, and falls down injury.

Office chair precedingly must unload the chair pin earlier what dispatch from the factory, again with seat bracket 10 and chairback brace 11 whole vannings, so that export trade is transported.But because of seat bracket 10 is L shaped shape with chairback brace 11, chairback brace 11 levels of putting into consequently still can't be taken up room, and cause vanning inconvenience, increase cost.

The utility model content

The purpose of this utility model, promptly be to provide a kind of office chair back safety range of tilt angles to set cancel system, its the safe range of tilt angles that can remove the office chair back is rapidly set, the seat support and the chair back are cased with the horizontal combination kenel, save the space, vanning is convenient, reduces cost of transportation, is fit to sell inside and outside and transports.

For achieving the above object, the seat bracket of the utility model office chair and the adjacent both sides of chairback brace respectively are provided with up and down oblique relative male and female and prop up part, and the pivot formation turning joint of joining, and seat bracket and chairback brace winding does not between the two have section location air pressure rod, adjusts the layback angle of inclination of the chair back with stepless; It is characterized in that: the mother of this chairback brace props up part and sets firmly a skeleton frame in the outside of the pivot back lower place, pass female inserted link that props up the relative through hole of part for placing a normality elasticity, make the inserted link traversing through end along with chairback brace is swung back, and the public affairs of retaining system seat bracket are propped up hypotenuse behind the part, to set the maximum security standpoint that chair back layback is tilted; Move inserted link by pulling outward and withdraw from the public part of disengaging, make chairback brace can swing back into the horizontal location state.

In possible embodiments, these public affairs are propped up part can be nested with female part of pivot joint U-shaped, props up the default relative through hole of part biside plate mother, head traversing through end plant location for inserted link, the bar portion of inserted link is the socket spring then, and passes skeleton frame outward, and at the terminal stay cord that connects of bar portion.

Technological means and effect thereof that relevant the utility model is adopted are for achieving the above object enumerated possible embodiments now and are cooperated drawing explanation, so that global design more is tending towards is clear.

Description of drawings

Fig. 1 is the stereogram of existing office chair;

Fig. 2 is the stereogram of the utility model embodiment office chair;

Fig. 3 is the stereogram of inner chair back skeleton of Fig. 2 office chair and the upright state of seat support skeleton group;

Fig. 4 is the enlarged drawing of Fig. 3 air pressure rod tailpiece of the piston rod and control lever;

Fig. 5 is the enlarged drawing of Fig. 3 turning joint and inserted link;

Fig. 6 is the cutaway view of Fig. 5;

Fig. 7 is along the cutaway view of A-A hatching line among Fig. 6;

Fig. 8 is the action diagram as Fig. 4;

Fig. 9 is the schematic diagram of the maximum security standpoint of swinging back as Fig. 6;

Figure 10 is for swinging back into the stereogram of horizontal location state as Fig. 3 chairback brace;

Figure 11 is the enlarged drawing of Figure 10 turning joint and inserted link; And

Figure 12 is the cutaway view of Figure 11.

The specific embodiment

At first, see also Fig. 2, but the utility model office chair is made up of institutes such as a seat support 20, a chair back 30 and winding detachable chair pin 40 equally basically.Please cooperate and consult Fig. 2, Fig. 3, Fig. 5, be provided with seat bracket 21 and chairback brace 31 at seat support 20 inner bottom parts and the chair back 30 inside, and seat bracket 21 and the adjacent both sides of chairback brace 31 respectively are provided with up and down oblique relative male and female and prop up

part

22,32, and run through winding with pivot 24 and constitute a turning joint.Do not have a section location air pressure rod 50 in seat bracket 21 and chairback brace 31 winding between the two in addition, and compounding practice one contains the control lever 60 of outside handle 61, adjust the angle of inclination of chairback brace 31 with stepless in safe range.

Piston rod 51 at air pressure rod 50 shown in Fig. 3, Fig. 4 stretches out maximum length, makes chairback brace 31 be positioned to 90 degree erectilities.The piston rod 51 front end interlockings of this air pressure rod 50 penetrate the bearing 23 of seat bracket 21, and expose the center valve rod 52 of internal control valve, and winding one lateral sheathed 55.And the joint 33 of air pressure rod 50 other end joints 53 inserting chairback braces 31 bottoms adopts pivot 54 activities to join again.One control lever 60 is laterally worn and is joined the bearing 23 of hub setting in seat bracket 21, and the sheathed torque spring 63 of its periphery, makes the briquetting 62 of control lever 60 leave the center valve rod 52 of air pressure rod 50 in the normality elastic stage, and then air pressure rod 50 is maintained fixed motionless really.

The mother of chairback brace 31 props up part 32 and is made as U-shaped shape ears welding shown in Figure 5, props up part 22 opposite ends for being nested with public affairs, and adopts pivot 24 activities to join.Please consult Fig. 5, Fig. 6, Fig. 7 simultaneously, the mother of this chairback brace 31 props up part 32 and sets firmly a skeleton frame 71 in the outside of pivot 24 back lower places, accepts the inserted link 70 of elastic force effect to place a normality.The bar portion periphery socket spring 76 of this inserted link 70, and pass skeleton frame 71 1 side through hole 74 outward, and inserted link 70 other ends form larger-diameter head 72, to insert out the relative through hole 34 of skeleton frame 71 opposite side through holes 73 and female part 32 biside plates, for setting the maximum security standpoint that chair back layback is tilted.

The head 72 and the bar portion junction of above-mentioned inserted link 70 are provided with an outer convex blocking ring 75, and with contact spring 76 1 ends, spring 76 other ends then are resisted against the opposing sidewalls inner face of skeleton frame 71, and at the terminal stay cord 77 that connects of the bar portion of inserted link 70.

In actual user mode, the user can continue to pull the handle 61 of control lever 60 as shown in Figure 8, makes its briquetting 62 push the center valve rod 52 of air pressure rod 50, to remove the blocking of air pressure rod 50.This moment user's chairback brace 31 (seeing also Fig. 9) of can backward exerting pressure, then chairback brace 31 is with the inclination of swinging back of pivot 24 centers, the last public affairs of the head 72 retaining system seat brackets 21 of inserted link 70 that make are relatively propped up part 22 back hypotenuses, to set the maximum security standpoint (for example 125 degree) that chair back layback is tilted, therefore the chair back can be adjusted angle orientation arbitrarily in 90～125 degree scopes, and prevents the crank situation simultaneously.

Office chair finish the assembling dispatch from the factory before (not comprising chair pin 40), the staff of manufacturer removes the blocking of air pressure rod 50 equally as shown in Figure 8, and the stay cord 77 of inserted link among Fig. 7 70 is pulled out, its head 72 is withdrawed from outward break away from a public part 22, then the staff can continue the chairback brace 31 of backward exerting pressure, make the chairback brace 31 and the chair back thereof layback becoming Figure 10, horizontal location state shown in Figure 11, and the head 72 of inserted link 70 swings the lateral surface (please cooperate and consult Figure 12) that props up part 22 to public affairs relatively, conveniently to case, save the space, reduce cost of transportation, suitable export trade is transported.

After the dealer receives goods and devans, need only operate control lever 60 and remove the blocking of air pressure rod 50, can make seat support 20, seat bracket 21, the chair back 30, chairback brace 31, air pressure rod 50 and inserted link 70 automatically return to Fig. 2, Fig. 3, state shown in Figure 5, or be positioned any position in the security standpoint scope.

In user mode, inserted link 70 is accepted the thrust of spring 76, with female part 32 of normality elasticity grafting, can not collide because of external force misoperation takes place, and is safe.In Fig. 1 user mode, the movable open-close type that the stay cord 77 of inserted link 70 is built in the chair back 30

cracks

35,35 can adopt slide fastener or linking tape mode and crack.

Comprehensive the above, the utility model can be removed the safe range of tilt angles of the office chair back rapidly and set, and seat support and the chair back are cased with the horizontal combination kenel, saves the space, vanning is convenient, the reduction cost of transportation is fit to sell inside and outside and transports.

Claims

1. an office chair back safety range of tilt angles is set cancel system, the seat bracket of its office chair and the adjacent both sides of chairback brace respectively are provided with up and down oblique relative male and female and prop up part, and the pivot formation turning joint of joining, and seat bracket and chairback brace winding does not between the two have section location air pressure rod, adjusts the layback angle of inclination of the chair back with stepless; It is characterized in that: the mother of this chairback brace props up part and sets firmly a skeleton frame in the outside of the pivot back lower place, passes the inserted link of female the relative through hole of part for placing a normality elasticity, and the inserted link traversing through end is along with chairback brace is swung back, and the public affairs of retaining system seat bracket are propped up hypotenuse behind the part.

2. office chair back safety range of tilt angles as claimed in claim 1 is set cancel system, it is characterized in that: this chairback brace is under the horizontal location state, and the inserted link traversing through end of its female part swings the lateral surface that props up part to public affairs relatively.

3. office chair back safety range of tilt angles as claimed in claim 1 or 2 is set cancel system, it is characterized in that: these public affairs are propped up part and are nested with female part of pivot joint U-shaped, prop up the default relative through hole of part biside plate mother, head traversing through end plant location for inserted link, the bar portion of inserted link is the socket spring then, and passes skeleton frame outward.

4. office chair back safety range of tilt angles as claimed in claim 3 is set cancel system, and it is characterized in that: the head of this inserted link and bar portion junction are provided with an outer convex blocking ring, and with contact spring one end, the spring other end then is resisted against the side wall inner surface of skeleton frame.

5. office chair back safety range of tilt angles as claimed in claim 3 is set cancel system, it is characterized in that: the terminal stay cord that connects of the bar portion of this inserted link.