CN206354749U - The bindiny mechanism of Chair underframe and the chair back - Google Patents

Abstract

The utility model discloses the bindiny mechanism of Chair underframe and the chair back, it includes the rotation connection structure of chassis and the chair back, it is characterized in that, also include the shell fragment and stopper being located on chassis, wherein, the front end of the shell fragment is fixed on the front portion on chassis, and rear end extends to the rear portion on chassis, and the rotation connection structure is arranged at the rear side of the rear end of shell fragment；The stopper is arranged at the top of shell fragment and is pressed on shell fragment；The chair back is provided with the upper tabletting extended forward at the rotation connection structure, and tabletting acts on the downside of the rear end of shell fragment on this.The good reliability of the bindiny mechanism, service life is long, and simple in construction, and manufacturing cost is low.

Description

The bindiny mechanism of Chair underframe and the chair back

Technical field

The utility model is related to seat, and in particular to the bindiny mechanism of chassis and the chair back in seat.

Background technology

The chair back of existing many seats (such as office chair) can be with respect to different angles be turned to, to improve before and after chassis The comfortableness used.In order to realize above-mentioned functions, the connected mode between the chair back and chassis mainly uses two kinds, and one kind is the chair back Connected between chassis using the working of plastics of elastically deformable, rotation and the bullet of the chair back are realized by the elastic deformation of working of plastics Property support；Another is to use rotating shaft to connect between the chair back and chassis, then sets Flexible Connector (such as between the chair back and chassis Spring) so that the chair back and chassis can be with elastic rotations.The deficiency that connected mode between the existing above-mentioned chair back and chassis is present It is, the less reliable connected using working of plastics, easy fatigue break；The structure connected using rotating shaft and Flexible Connector is answered Miscellaneous, cost is high.

Utility model content

In order to overcome the above-mentioned deficiency of prior art, the utility model provides the bindiny mechanism of Chair underframe and the chair back, should The good reliability of bindiny mechanism, service life is long, and simple in construction, and manufacturing cost is low.

The utility model realizes that above-mentioned purpose technical scheme is：

The bindiny mechanism of Chair underframe and the chair back, includes the rotation connection structure of chassis and the chair back, it is characterised in that also wrap The shell fragment and stopper being located on chassis are included, wherein, the front end of the shell fragment is fixed on the front portion on chassis, and rear end is to behind chassis Portion extends, and the rotation connection structure is arranged at the rear side of the rear end of shell fragment；The stopper is arranged at the top of shell fragment and pressure Tightly on shell fragment；The chair back is provided with the upper tabletting extended forward at the rotation connection structure, and tabletting is acted on this The downside of the rear end of shell fragment.

Further, the chassis is provided with stopper position adjusting mechanism, and the stopper position adjusting mechanism includes handle Hand, cone tooth transmission mechanism and thread transmission, the handle are arranged on the outside of chassis, and power transmission shaft is connected with the handle, should Power transmission shaft is extend into chassis to be connected with the drive bevel gear in cone tooth transmission mechanism, the driven wheel of differential in cone tooth transmission mechanism It is connected with the screw rod in thread transmission, the nut in thread transmission is fixedly connected with the stopper.

Further, the bottom of the chair back is provided with the connecting seat for being used for being connected with chassis, and the front portion of the connecting seat is provided with Rotating shaft is respectively equipped with the outside of two linking arms for extending forward, two linking arms to be connected to form described rotation connection with chassis Structure；Described shell fragment is two, and the bottom of two linking arm ends is respectively equipped with described upper tabletting, each upper tabletting effect Downside in the rear end of a shell fragment.

Further, position latch-up structure is provided between the chassis and connecting seat, the position latch-up structure includes being located at Several lock slots arranged along the vertical direction on connecting seat, the dead bolt being located on chassis, set spring on chassis and with The tricing line of dead bolt connection；The guide groove for being used for accommodating dead bolt is provided with the chassis, the spring is arranged in the guide groove, One end of spring is acted on the side wall of guide groove, and the other end, which is acted on dead bolt, promotes the rear end of dead bolt to be inserted into the locking In groove.

Further, the spring includes big rigid spring and small rigid spring, and the front end of the dead bolt is provided with to downward The spring location division stretched, the big rigid spring is arranged at the front side of spring location division, and the small rigid spring is arranged at spring The rear side of location division, the elastic force that the big rigid spring and small rigid spring apply to spring location division is in opposite direction.

Further, the chassis is provided with the connector for being used for being connected with seat, and the lower end of the connector rotates connection In on the power transmission shaft, the lower surface of the connector is arranged to arc surface, and the chassis is set in the lower end corresponding position of the connector There is the circular groove that the lower surface with connector matches；The upper end of the connector rotates with seat and is connected.

Compared with prior art, the utility model has the advantages that：

1st, the utility model provides elasticity and support using shell fragment for the layback of the chair back, and good reliability, indefatigability fractures, Service life is long；And simple in construction, assembling is easy, manufacturing cost is low.

2nd, because the upper tabletting on the chair back acts on the downside of the rear end of shell fragment, upper tabletting from bottom to top will when the chair back is swung back Shell fragment is lifted, because the top of shell fragment in chassis generally has larger space so that scope of activities when shell fragment is lifted compared with Greatly, the elasticity layback scope of the chair back is increased.

Brief description of the drawings

Fig. 1 is the structural representation of one of the embodiment of bindiny mechanism of Chair underframe of the present utility model and the chair back.

Fig. 2 is Fig. 1 stereogram.

Fig. 3 is the dimensional structure diagram of position latch-up structure in Fig. 1.

Fig. 4 is the profile at position latch-up structure position in Fig. 1.

Fig. 5 is the dimensional structure diagram of connecting seat in Fig. 1.

Fig. 6 is two structural representation of the embodiment of the bindiny mechanism of Chair underframe of the present utility model and the chair back.

Embodiment

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.

Embodiment 1

As depicted in figs. 1 and 2, the bindiny mechanism of Chair underframe and the chair back of the present utility model includes chassis 1 and the chair back Rotation connection structure 5, it is located at the One On The Chassis shell fragment 3 and stopper 4.The shell fragment 3 is two, is arranged at two in chassis 1 Side, the shell fragment 3 is made of flexible material, such as glass bar.The front end of the shell fragment 3 is fixed on the front portion on chassis 1, Rear end extends to the rear portion on chassis 1, and the rotation connection structure 5 is arranged at the rear side of the rear end of shell fragment 3.The stopper 4 is set It is placed in the top of shell fragment 3 and is pressed on shell fragment 3.The chair back is provided with what is extended forward at the rotation connection structure 5 Upper tabletting 202, tabletting 202 acts on the downside of the rear end of shell fragment 3 on this.

As depicted in figs. 1 and 2, the chair back includes chair back main body (not shown) and is located at chair back lower body part Connecting seat 2, the connecting seat 2 is connected by the rotation connection structure 5 with chassis 1；The upper tabletting 202 is arranged at the connecting seat On 2.

As depicted in figs. 1 and 2, rigidity when being swung back in order to adjusting back, it is described the need for meeting different users Chassis 1 is provided with stopper position adjusting mechanism, and the stopper position adjusting mechanism includes handle 6, cone tooth transmission mechanism 8 and spiral shell Line transmission mechanism 9, the handle 6 is arranged on the outside of chassis 1, the handle 6 and is connected with power transmission shaft 7, and the power transmission shaft 7 extend into bottom It is connected in disk 1 with the drive bevel gear 801 in cone tooth transmission mechanism 8, driven wheel of differential 802 and spiral shell in cone tooth transmission mechanism 8 Screw rod 901 in line transmission mechanism 9 is connected, and the nut 902 in thread transmission is fixedly connected with the stopper 4.It is described Power transmission shaft 7 is polygon shaft, and the polygon shaft is connected with the polygonal hole being arranged in drive bevel gear 801.Above-mentioned stopper In position adjusting mechanism, by swing handle 6, using boring tooth transmission mechanism 8 and before and after thread transmission 9 drives stopper 4 It is mobile, so as to change position of the stopper 4 in shell fragment 3 so that the distance between stopper 4 and the upper tabletting 202 occur Change, so as to change the rigidity of shell fragment 3 so that the chair back has different rigidity when swinging back.

As Figure 1-Figure 4, the front portion of the connecting seat 2 is provided with two linking arms 201 extended forward, two linking arms 201 outside is respectively equipped with rotating shaft 203 and the rotation connection structure 5 described in being formed, this rotation connection structure 5 is connected with chassis 1 It is simple in construction, it is easy to assembling.The bottom of described two ends of linking arm 201 is respectively equipped with described upper tabletting 202, each upper pressure Piece 202 acts on the downside of the rear end of a shell fragment 3；Using two shell fragments 3 and two upper cooperatings of tabletting 202 so that by Power is balanced, and stability and comfortableness are more preferable.

As shown in Figure 3-Figure 5, when the chair back swings back all some positions, in order to be able to allow seat back lock in the position, the bottom Position latch-up structure is provided between disk 1 and connecting seat 2, the position latch-up structure includes being located on connecting seat 2 along the vertical direction Arrangement several lock slots 204, be located at the One On The Chassis dead bolt 11, set the One On The Chassis spring and the control being connected with dead bolt 11 Rope making 10；The guide groove 101 for being used for accommodating dead bolt 11 is provided with the chassis 1, the spring is arranged in the guide groove 101, One end of spring is acted on the side wall of guide groove 101, and the other end, which is acted on, promotes the rear end of dead bolt 11 to be inserted on dead bolt 11 In the lock slots 204；The top of the dead bolt 11 is provided with cover plate 14.During work, if necessary to adjustment backward position, pass through control The pulling dead bolt 11 of rope making 10 overcomes the elastic force of spring so that dead bolt 11 exits lock slots 204, and now the chair back can freely swing back, After new position is arrived in layback, the tricing line 10 is unclamped, under the action of the spring, dead bolt 11 is reinserted into new lock slots Locking is realized in 204.Further, the spring includes big rigid spring 12 and small rigid spring 13, the front end of the dead bolt Provided with the spring location division 1101 extended downwardly, the big rigid spring 12 is arranged at the front side of spring location division 1101, described Small rigid spring 13 is arranged at the rear side of spring location division 1101, and the big rigid spring 12 and small rigid spring 13 are fixed to spring The elastic force that position portion 1101 applies is in opposite direction.The purpose so set is, when dead bolt 11 is pulled out into locking by tricing line 10 The formula of groove 204, the elastic force that the small rigid spring 13 is produced is identical with the direction of tricing line 10, so that more laborsaving；And ought be firm greatly During spending the promotion insertion lock slots 204 of dead bolt 11 of spring 12, the small rigid spring 13 serves cushioning effect, it is to avoid go out Existing excessive impact；In addition, being acted on by big rigid spring 12 and small rigid spring 13 bidirectional elastic of dead bolt 11 so that lock Tongue 11 is more smooth in the slip of guide groove 101, it is to avoid occur stuck.

As Figure 1-Figure 5, the operation principle of the bindiny mechanism of above-mentioned Chair underframe and the chair back is：When the chair back is to layback When, the chair back rotates backward around the axis of the rotation connection structure 5, because upper tabletting 202 is located at before rotation connection structure 5 Side, therefore upper tabletting 202 can move upwards, so as to be lifted up the rear end of shell fragment 3, shell fragment 3 is that fulcrum produces bullet with stopper 4 Property deformation, to the chair back realize flexibly support.

Embodiment 2

As shown in fig. 6, in addition to herein below, the other embodiment of the present embodiment is same as Example 1：On the chair back Provided with the connector 15 for being connected with seat, the lower end of the connector 15 is rotationally connected with the power transmission shaft 7, the connector 15 lower surface is arranged to arc surface, and the chassis 1 is in the lower end corresponding position of the connector 15 provided with the lower end with connector 15 The circular groove that face matches；The upper end of the connector 15 rotates with seat and is connected.

Embodiment not limited to this of the present utility model, according to the above of the present utility model, utilizes the general of this area Logical technological know-how and customary means, under the premise of the above-mentioned basic fundamental thought of the utility model is not departed from, the utility model may be used also To make the modification of other diversified forms, replace or change, all fall within the utility model rights protection scope.

Claims (6)

1. the bindiny mechanism of Chair underframe and the chair back, includes the rotation connection structure of chassis and the chair back, it is characterised in that also include Be located at shell fragment and stopper on chassis, wherein, the front end of the shell fragment is fixed on the front portion on chassis, rear portion from rear end to chassis Extension, the rotation connection structure is arranged at the rear side of the rear end of shell fragment；The stopper is arranged at the top of shell fragment and compression On shell fragment；The chair back is provided with the upper tabletting extended forward at the rotation connection structure, and tabletting acts on bullet on this The downside of the rear end of piece.

2. the bindiny mechanism of Chair underframe according to claim 1 and the chair back, it is characterised in that the chassis is provided with resistance Stop location governor motion, the stopper position adjusting mechanism includes handle, cone tooth transmission mechanism and thread transmission, described Handle is arranged on the outside of chassis, and power transmission shaft is connected with the handle, and the power transmission shaft is extend into chassis with boring in tooth transmission mechanism Drive bevel gear connection, cone tooth transmission mechanism in driven wheel of differential and thread transmission in screw rod connection, screw thread pass Nut in motivation structure is fixedly connected with the stopper.

3. the bindiny mechanism of Chair underframe according to claim 1 or 2 and the chair back, it is characterised in that under the chair back Portion is provided with the connecting seat for being used for being connected with chassis, and the front portion of the connecting seat is provided with two linking arms extended forward, two connections Rotating shaft is respectively equipped with the outside of arm to be connected to form described rotation connection structure with chassis；Described shell fragment is two, two companies The bottom for connecing arm end is respectively equipped with described upper tabletting, and each upper tabletting acts on the downside of the rear end of a shell fragment.

4. the bindiny mechanism of Chair underframe according to claim 3 and the chair back, it is characterised in that the chassis and connecting seat Between be provided with position latch-up structure, the position latch-up structure include be located on connecting seat arrange along the vertical direction several lock Determine groove, the dead bolt being located on chassis, the spring being located on chassis and the tricing line being connected with dead bolt；Provided with use in the chassis In the guide groove for accommodating dead bolt, the spring is arranged in the guide groove, and one end of spring is acted on the side wall of guide groove, separately One end, which is acted on dead bolt, promotes the rear end of dead bolt to be inserted into the lock slots.

5. the bindiny mechanism of Chair underframe according to claim 4 and the chair back, it is characterised in that the spring includes big firm Spring and small rigid spring are spent, the front end of the dead bolt is provided with the spring location division extended downwardly, and the big rigid spring is set In the front side of spring location division, the small rigid spring is arranged at the rear side of spring location division, the big rigid spring and it is small just The elastic force that degree spring applies to spring location division is in opposite direction.

6. the bindiny mechanism of Chair underframe according to claim 2 and the chair back, it is characterised in that the chassis is provided with use In the connector being connected with seat, the lower end of the connector is rotationally connected with the power transmission shaft, and the lower surface of the connector is set Arc surface is set to, it is recessed that the chassis is provided with the circular arc matched with the lower surface of connector in the lower end corresponding position of the connector Groove；The upper end of the connector rotates with seat and is connected.