CN201542121U - Tray used for double-locking chair - Google Patents

Abstract

The utility model relates to a rotary chair, in particular to a tray used for a double-locking chair, which mainly solves the technical problems existing in the prior art that when the tray is used for adjusting the chair for proper pitching, only an adjusting rod is inserted and connected into a fixing hole for fixation, therefore, the position is not firm, the accidents can be easy caused, etc. The tray comprises a base plate arranged on the rotary chair; the base plate is connected with a shell by a fulcrum shaft; an adjusting nut is arranged in the shell; the lower end of the adjusting nut is connected with a spring; a movable seat is arranged in the shell; a cone-shaped tube is inserted and connected in the movable seat; a cone-shaped fixing plate is arranged between the cone-shaped tube and the movable seat; the base plate and the side wall of the shell are penetrated with adjusting rods that can rotate and move axially; the inner ends of the adjusting rods are inserted and connected in the movable seat and connected with an adjusting plate that can be in contact with a pressure bar; a limit piece is connected on the rod body of the adjusting rod; one end of the limit piece is connected with a locking plate that can be buckled at the edge of the side wall of the base plate.

Description

Twin-lock is decided the chair pallet

Technical field

The utility model relates to a kind of swivel chair, especially relates to a kind of twin-lock being decided chair with pallet isostructural improvement.

Background technology

At present, be used in the supporting existing pallet of swivel chair, its governor motion is a handle when pulling up and down, by the roller roof pressure gasket compression stage clip that connects handle, regulates locking or loosen the brake sheet, and the chair back of swivel chair is swung within the specific limits.Chinese patent discloses a kind of pallet (Granted publication number: CN 2587252Y), it mainly comprises base plate, sliding seat, conical pipe and adjusting device, sliding seat is fixedly connected on base plate, opposite side in sliding seat is provided with a Taper Pipe fixed head, is fixedly connected between Taper Pipe fixed head and sliding seat and the conical pipe; Adjusting device includes adjusting rod, adjustable plate, torsion spring, torsion spring fixed head, and adjusting rod interts in sliding seat, and adjustable plate is fixedly connected on adjusting rod and inserts on the interior end of sliding seat, the one side contact air pressure rod of adjustable plate, and another side is connected with torsion spring; On the another side of adjustable plate, be provided with adjustable plate and end blade; With rivet sliding seat is riveted on the base plate, at the middle position of sliding seat welding conical pipe, all around the home on rivet, an end of torsion spring is fixed on the torsion spring fixed head, and a protruding bubble of adjustable plate is arranged on adjustable plate for torsion spring and torsion spring fixed head; Pallet is provided with a retaining mechanism, and retaining mechanism mainly comprises fixed block, rivet, adjusting rod, roller mount, roller, roller pin, regulating sleeve, rivet, adjusting bolt, stage clip, holder, brake(-holder) block, steel bushing, locking nut; Fixed block is fixedly connected on the sliding seat, its end activity penetrates rivet, one end activity of brake(-holder) block is fixed on the central authorities of rivet, the other end of brake(-holder) block is provided with the long waist shaped hole, in the hole, penetrate the adjusting bolt, an end of regulating bolt is screwed with locking nut, and is installed with steel bushing, and the steel bushing outer surface cooperates with a side of holder is movable, holder is fixedly connected on the base plate, the fixedly connected regulating sleeve in holder another side, at the inboard matched in clearance stage clip of holder, stage clip is wound on to be regulated on the bolt, regulate the end face roof pressure roller of bolt, roller is riveted on the roller mount with roller pin, and the side of roller mount penetrates rivet, flexibly connects with regulating sleeve; The inboard welding of other end adjusting rod in roller mount.But this pallet just is plugged in the fixing hole by adjusting rod and fixes when regulating seat and carry out suitable pitching, locatees more insecurely, meets accident easily.

The utility model content

The utility model technical issues that need to address provide a kind of twin-lock and decide the chair pallet, it mainly is to solve the existing in prior technology pallet when the adjusting seat carries out suitable pitching, just be plugged in the fixing hole and fix by adjusting rod, locate more insecure, the technical problem that meets accident easily etc.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:

Twin-lock of the present utility model is decided the chair pallet, comprise the chassis that is installed on the swivel chair, the chassis is connected with housing by fulcrum, be provided with adjusting nut in the housing, the adjusting nut lower end is connected with spring, it is characterized in that being provided with sliding seat in the described housing, be plugged with conical pipe in the sliding seat, this has the taper fixed head between conical pipe and the sliding seat, the chassis, the sidewall cross-under of housing has rotatable and axially movable adjusting rod, adjusting rod the inner is plugged on sliding seat inside and is connected with the adjustable plate that can contact air pressure rod, is connected with locating part on the shaft of adjusting rod, and locating part one end is connected with the locking plate that can be buckled in the chassis side wall edge.By adjusting nut can regulating spring pretightning force, thereby regulate the cushion effect of whole swivel chair.Can drive adjustable plate after the adjusting rod rotation and rotate, thereby the contact air pressure rod backs down the air pressure head, make swivel chair realize lifting.After the inside axially-movable of adjusting rod, adjusting rod can drive locating part and inwardly move, thereby the locking plate on the locating part can be buckled in chassis side wall edge upside, so just can lock whole pallet.Locating part can be made of plastics.

As preferably, be connected with positioning pipe on the described locating part, adjusting rod is plugged in the positioning pipe, is connected with resilient key by spring on the adjusting rod, the pipe shaft of positioning pipe has the elongated slot that can hold resilient key, and the positioning pipe outer end has the groove that can allow resilient key pass through.After the adjusting rod rotation, the resilient key on the adjusting rod promptly can enter the groove of positioning pipe outer end, and resilient key can indentation in positioning pipe, and resilient key can stretch out in elongated slot, thereby adjusting rod and locating part are linked together.

As preferably, described adjusting rod outer end is connected with handle, is convenient for people to operate that adjusting rod is rotated or axially-movable, and handle can be made of plastics.

As preferably, be provided with torsion spring in the described sliding seat, torsion spring one end contacts with adjustable plate, and the other end is connected on the torsion spring fixed head, and the torsion spring fixed head is hinged on the fulcrum.After adjustable plate rotated, torsion spring can reset adjustable plate.

As preferably, described spring outer race is connected to spring protecting sleeve, can prevent from that spring from exposing to crush finger.

Therefore, the utlity model has pallet when the adjusting seat carries out suitable pitching, not only be plugged in the fixing hole and fix by adjusting rod, also by locking plate with the lockmaking of chassis side wall edge, locate comparatively firmly, prevent accident, characteristics such as simple and reasonable for structure.

Description of drawings

Accompanyingdrawing 1 is a kind of structural representation of the present utility model;

Accompanyingdrawing 2 is A-A cross-sectional view of Fig. 1;

Accompanyingdrawing 3 is perspective view of the present utility model.

Parts, position and numbering among the figure:chassis 1,fulcrum 2,housing 3, adjustingnut 4,spring 5, slidingseat 6,conical pipe 7, taper fixedhead 8, adjustingrod 9,adjustable plate 10, locatingpart 11,locking plate 12,positioning pipe 13,resilient key 14,elongated slot 15, handle 16,torsion spring 17, torsion spring fixedhead 18,spring protecting sleeve 19.

The specific embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: this routine twin-lock is decided the chair pallet, as Fig. 1, Fig. 2, Fig. 3, achassis 1 that is installed on the swivel chair is arranged, the chassis is connected withhousing 3 byfulcrum 2, be provided with adjustingnut 4 and slidingseat 6 in the housing, the adjusting nut lower end is connected withspring 5, and the spring outer race is connected tospring protecting sleeve 19, the middle position of sliding seat is welded withconical pipe 7, and this has taper fixedhead 8 between conical pipe and the sliding seat.The side of whole pallet is provided with a locking device, and locking device includes an adjustingrod 9, and the outer end of adjusting rod is connected with handle 16.The adjusting rod cross-under is on the sidewall ofchassis 1,housing 3, and adjusting rod the inner is connected with theadjustable plate 10 that can contact air pressure rod, andadjustable plate 10 contacts havetorsion spring 17, the torsion spring other end to be connected on the torsion spring fixedhead 18, and the torsion spring fixed head is hinged on the fulcrum 2.In thepositioning pipe 13 on the shaft of adjustingrod 9 on the cross-underfinite place piece 11, locating part is located at the outside onchassis 1, be connected withresilient key 14 by spring on the adjusting rod, the pipe shaft of positioning pipe has theelongated slot 15 that can hold resilient key, and the positioning pipe outer end has the groove that can allow resilient key pass through.The upper end of locating part is connected with thelocking plate 12 that can be buckled inchassis 1 sidewall edge,

During use, rotary handle 16 drivesadjustable plate 10 by adjustingrod 9 and backs down the air pressure head, and atmospheric pressure pole can drive swivel chair and carry out lifting; With handle 16 thruster inchassis 1, adjusting rod one end is inserted in the base side opening, and anend locking plate 12 is buckled inchassis 1 edge upside, thereby makes pallet both sides lockings, on the contrary handle be pulled outwardly, pallet just can the front and back reclining.

Claims (5)

1. a twin-lock is decided the chair pallet, comprise the chassis (1) that is installed on the swivel chair, the chassis is connected with housing (3) by fulcrum (2), be provided with adjusting nut (4) in the housing, the adjusting nut lower end is connected with spring (5), it is characterized in that being provided with in the described housing (3) sliding seat (6), be plugged with conical pipe (7) in the sliding seat, this has taper fixed head (8) between conical pipe and the sliding seat, chassis (1), the sidewall cross-under of housing (3) has rotatable and axially movable adjusting rod (9), adjusting rod the inner is plugged on sliding seat inside and is connected with the adjustable plate (10) that can contact air pressure rod, be connected with locating part (11) on the shaft of adjusting rod, locating part one end is connected with the locking plate (12) that can be buckled in chassis (1) sidewall edge.

2. twin-lock according to claim 1 is decided the chair pallet, it is characterized in that being connected with on the described locating part (11) positioning pipe (13), adjusting rod (9) is plugged in the positioning pipe, be connected with resilient key (14) by spring on the adjusting rod, the pipe shaft of positioning pipe has the elongated slot (15) that can hold resilient key, and the positioning pipe outer end has the groove that can allow resilient key pass through.

3. twin-lock according to claim 1 and 2 is decided the chair pallet, it is characterized in that described adjusting rod (9) outer end is connected with handle (16).

4. twin-lock according to claim 1 and 2 is decided the chair pallet, it is characterized in that being provided with in the described sliding seat (6) torsion spring (17), torsion spring one end contacts with adjustable plate (10), and the other end is connected on the torsion spring fixed head (18), and the torsion spring fixed head is hinged on the fulcrum (2).

5. twin-lock according to claim 1 and 2 is decided the chair pallet, it is characterized in that described spring (5) outer race is connected to spring protecting sleeve (19).

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