CN201045969Y - Reclining mechanism of seat - Google Patents

Abstract

The utility model provides a chair reclining mechanism, which comprises a chair seat frame, a chair back frame and a foot pad frame, and is characterized in that a base, a support shaft, a front connecting rod, a rear connecting rod and an auxiliary device are added; the base and the supporting shaft are arranged below the chair seat frame; the supporting shaft is connected with the base and the lower rod part of the chair back frame, and a rear connecting rod is arranged between a pivoting part above the supporting shaft and a pivoting part of the chair back frame extension part; an auxiliary device is arranged between the pivoting part of the upper rod part of the chair seat frame and the pivoting part of the extending part of the chair back frame; one end of the front connecting rod is pivoted with the pivoting part of the chair back frame extension part, and the other end of the front connecting rod is connected with the pivoting part of the foot pad frame; the back of the foot pad frame is provided with a pivoting part which is pivoted with the chair seat frame. Therefore, the utility model can adjust the inclination angle between the chair back frame and the chair seat frame, and can make the chair back frame have a larger included angle with the horizontal line on the ground when the chair seat frame is tilted backwards, ensure the comfort of lying and leaning on after, and have good support stability simultaneously, and make the chair have the advantages of replying the convenience and the cushioning property of extension.

Description

seat reclining mechanism

technical field

The utility model relates to a seat, in particular to a seat reclining mechanism.

Background technique

At present, in order to improve the riding comfort, the seat has a reclining mechanism with the back of the seat reclined. Seat reclining mechanism in the prior art as shown in Figure 10-11 mainly comprises tripod 1 ', chair back 2 ', seat seat 3 ', foot pad 4 ' and forms. A pivot hole 11' is set at the rear of the tripod 1', and a fixing button 12' is set at the front; a pivot hole 21' is set at the bottom of the chair back 2', and the pivot hole 11', 21' is inserted through the pivot rod 5' and The tripod 1' is pivotally connected, the bottom of the chair back 2' is pivotally connected to the rear end of the seat 3', and the bottom of the chair back 2' is pivotally connected to one end of the combined connecting rod 22'; a slide bar 31' is set under the center of the seat 3', The sliding rod 31 ′ can slide corresponding to the fixing button 12 ′, and is screwed and fixed by the fixing button 12 ′, and the foot pad 4 ′ is pivotally connected with the other end of the connecting rod 22 ′. As shown in Figure 11, when the fixed button 12' is loosened, the seat back 2' is reclined by the occupant's reclining force. The rear of the seat 3' rises and moves forward, and at the same time, the connecting rod 22' moves forward to drive the foot pad 4' to expand, so that the angle a between the seat back 2' and the seat 3' increases, and can be tightened by tightening the fixing button 12', to fix the back angle.

Although the reclining mechanism in the prior art has achieved the purpose of leaning back, this structure still has the following disadvantages:

1) When the chair back 2' is reclined, the rear of the seat 3' also rises correspondingly, causing the angle b formed between the seat 3' and the parallel line to the ground to be unable to match the recline of the chair back 2', and causing the human body to recline when reclining. The buttocks are not easy to slide naturally between the seat back 2' and the seat 3', resulting in unsatisfactory riding comfort.

2) When the fixing button 12' is loosened to make the seat back 2' recline, because there is no lack of cushioning design, the seat back 2' instantly recedes sharply, causing the disadvantages of difficulty in adjusting the angle and uncomfortable riding.

3) When the reclined chair back 2' is returned to the unreclined state, the seat 3' must be pressed down completely by the weight of the human body or adjusted by the human body away from the seat, which has the disadvantage of inconvenient adjustment.

Contents of the invention

The purpose of this utility model is to address the above-mentioned defects in the prior art, to provide an adjustable inclination angle between the seat back frame and the seat frame, and to make the horizontal line between the seat frame and the ground when the seat back frame is reclined. It has a large angle to ensure the comfort of reclining, and at the same time has good support stability, so that the seat has the convenience of recovery and the cushioning of stretching.

In order to achieve the above object, the technical solution adopted by the utility model is: a seat reclining mechanism, including a seat frame, a chair back frame and a foot pad frame, which is characterized in that: a base, a support shaft, a front connecting rod, a rear Connecting rods and auxiliary devices; the base and the supporting shaft are arranged under the seat frame; the end of the supporting shaft is connected to the base, and pivot joints are respectively arranged at the center and above; the seat frame is provided with an upper rod part and a lower rod part, A pivot joint is provided under the lower rod, and is pivotally connected to the support shaft through a shaft rod, and a pivot joint is respectively provided at the front and rear of the upper rod; The pivot joint behind the upper rod of the frame is pivotally connected, and the chair back frame is provided with an extension downward, and the extension is provided with a plurality of pivot joints; between the pivot joint above the support shaft and the pivot joint of the chair back frame extension A rear link is provided; an auxiliary device is provided between the pivot joint of the upper rod of the seat frame and the pivot joint of the extension of the seat back frame; the pivot joint between one end of the front link and the extension of the seat back frame The other end is connected to the pivotal part of the footrest frame; the pivotal part is arranged behind the footrest frame and is pivotally connected with the seat frame.

A hollow portion is provided between the upper and lower rods of the seat frame; the rear connecting rod, the auxiliary device and the front connecting rod are all arranged at the hollow portion of the seat frame.

Armrests are fixed on the seat frame.

The auxiliary device is a pneumatic rod. The air pressure rod is provided with a convex button and a pressing button, one end of the pressing button is connected with a rope, and the other end of the rope is provided with a control button.

The auxiliary device is a spring.

The auxiliary device is a stepless air pressure rod.

The auxiliary device is an electric telescopic rod; the electric telescopic rod includes a motor and a telescopic rod.

Beneficial effects of the utility model: Compared with the prior art, the utility model adds an auxiliary device with a buffer function, so the user can make the chair back frame recline by leaning on the body, and at the same time make the front of the seat frame rise and The angle between the parallel line with the ground is increased, and the center of gravity of the user's buttocks can naturally slide to the rear of the seat frame when the user is sitting, thus improving the riding comfort and stability. In addition, the auxiliary device can make the seat back frame have a cushion when reclined performance, and it is convenient for the chair back frame to return to the advantage of the unreclined state.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Fig. 1 is the exploded schematic diagram of the utility model embodiment one;

Fig. 2 is a schematic diagram of a non-reclining state according to Embodiment 1 of the present utility model;

Fig. 3 is a side view of the utility model embodiment;

Fig. 4 is a side view of the utility model embodiment one in a backward state;

Fig. 5 is a side view of the utility model embodiment-maximum reclining angle state;

Fig. 6 is a side view of the second embodiment of the utility model;

Fig. 7 is a side view of the second embodiment of the utility model in a reclined state;

Fig. 8 is a side view of the third embodiment of the utility model;

Fig. 9 is a side view of the third embodiment of the utility model in a reclined state;

Fig. 10 is a side view of the seat mechanism described in the prior art;

Fig. 11 is a side view of the reclining state of the seat mechanism described in the prior art.

In the figure: 1 base, 11 shaft seat, 12 bearing, 2 support shaft, 21 end, 22 pivot joint, 23 pivot joint, 24 shaft rod, 3 seat frame, 31 lower rod part, 32 upper rod part, 33 Hollow part, 311 Pivot joint, 321 Pivot joint, 322 Joint, 323 Pivot joint, 324 Pivot joint, 4 Chair back frame, 41 Pivot joint, 42 Extension, 421 Pivot joint, 422 Pivot joint Part, 423 pivot joint, 5 rear link, 51 end, 52 end, 6 auxiliary device, 61 air pressure rod, 62 spring, 63 electric telescopic rod, 611 end, 612 end, 613 convex button, 614 pressure Button, 615 rope, 631 motor, 632 telescopic rod, 7 front connecting rod, 71 end, 72 end, 8 foot pad frame, 81 pivot joint, 82 pivot joint, 9 armrest, 91 control button;

1' Tripod, 11' Pivot Hole, 12' Fixed Button, 2' Chair Back, 21' Pivot Hole, 22' Link, 3' Seat, 31' Slider, 4' Feet, 5' Pivot Arbors.

Detailed ways

Embodiment one:

Embodiment 1 of the utility model as shown in Fig. 1-3, it comprises base 1, support shaft 2, seat frame 3, chair back frame 4, rear connecting rod 5, auxiliary device 6, front connecting rod 7, foot Cushion frame 8, armrest 9, wherein base 1 is located at seat frame 3 below, and the top of base 1 is fixedly provided with shaft seat 11, and bearing 12 is set in this shaft seat 11.

The end 21 of the support shaft 2 is engaged with the shaft seat 11 of the base, and can rotate correspondingly to the shaft seat 11; a pivot joint 22 is provided in the center of the support shaft 2 and is pivotally connected with the seat frame 3, and a pivot joint 23 is provided above the support shaft 22. And it is pivotally connected with one end 51 of the rear connecting rod 5 through the shaft rod 24 .

The seat frame 3 includes a lower rod part 31 and an upper rod part 32 , and a hollow part 33 is provided between the lower and upper rod parts 31 and 32 . A pivot joint 311 is arranged at the center below the lower rod portion 31, and the pivot joint hole of the pivot joint portion 311 and the pivot joint hole of the pivot joint portion 23 of the support shaft 2 are pivotally connected with the support shaft 2 through the shaft rod 24, so that the seat The frame 3 can rotate corresponding to the support shaft 2 . The two sides in front of the upper rod part 32 are provided with pivot joints 321, and are connected to the foot pad frame 8 through the pivot joint assembly; A pivotal joint 323 is provided at the center of the front, and the combined auxiliary device 6 is pivotally connected thereto; pivotal joints 324 are provided on both sides behind the upper rod part 32, and the combined seat back frame 4 is pivotally jointed through the pivotal joint assembly.

The lower two sides of the seat back frame 4 are provided with pivot joints 41, and are pivotally connected with the rear pivot joints 324 of the upper rod portion 32 of the seat frame 3 through the pivot joint assembly. The position of the extension part 42 corresponds to the hollow part 33 of the seat frame 3 . The extension part 42 is provided with a pivot joint part 421, and is pivotally connected with the end part 52 of the rear link 5 through a pivot joint assembly; end of connecting rod 7.

The rear connecting rod 5 is arranged at the hollow portion 33 of the seat frame 3, and its two ends 51, 52 are respectively pivotally connected with the pivotal portion 23 above the support shaft 2 and the pivotal portion 421 of the extension portion 42 of the seat back frame 4, so that When the seat back frame 4 moves backward, the angle of the rear link 5 changes correspondingly, and supports the seat back frame 4 while forcing the seat frame 3 to shift upwards in the front direction.

The auxiliary device 6 is located at the hollow portion 33 of the seat frame 3, the auxiliary device 6 is an adjustable air pressure rod 61, and one end 611 of the air pressure rod 61 is pivotally connected with the central pivot joint 323 of the upper rod portion 32 of the seat frame 3, The other end 612 is pivotally connected to the bottom pivoting portion 422 of the extension portion 42 of the seat back frame 4 . As shown in FIG. 3 , the air pressure lever 61 has a convex button 613 and a pressing button 614 linked by a rope 615 . The length of the air pressure rod 61 can be controlled by pressing the push button 614 , and the length of the air pressure rod 61 can be locked when the convex button 613 is not pressed.

The front link 7 is located at the hollow portion 33 of the seat frame 3 , one end 71 of which is pivotally connected to the bottom pivot joint 423 of the extension portion 42 of the seat back frame 4 , and the other end 72 is pivotally connected to the footrest frame 8 .

The rear two sides of the foot pad frame 8 are provided with pivot joints 81, and are pivotally connected with the front pivot joints 321 of the upper bar portion 32 of the seat frame 3 through the pivot assembly; the bottom of the foot pad frame 8 is provided with pivot joints 82, and It is pivotally connected to an end 72 of the front link 7 through a pivot assembly.

The armrest 9 is fixed on the seat frame 3, and the armrest 9 is provided with a control button 91, which is connected to one end of the rope 615, and the control button 91 can control the rope 615 to drive the pressing button 614 to move.

As shown in Figure 2-3, when the utility model is not reclined, the air pressure rod 61 stretches, pushes the bottom of the seat back frame 4, and makes the seat back frame 4 fold. The stretching length of the air pressure rod 61 can locate the folding angle of the chair back frame 4, and the folding of the chair back frame 4 can drive the front connecting rod 7 to make the foot pad frame 8 be in a retracted state.

As shown in Figures 3-5, the user can, as shown in Figure 4, press the control button 91, make the rope 615 drive the push button 614, press the convex button 613, and lean back the seat back frame 4 through the body's reclining force, and the air pressure The rod 61 acts as a buffer, and the rear end of the rear connecting rod 5 above the support shaft 2 moves upward through the back frame 4, forcing the seat frame 3 to rotate corresponding to the support shaft 2, and the front of the seat back frame 3 rises; the rear of the seat back frame 4 When reclined, the lower extension 42 of the chair back frame 4 can move forward, and compress the air pressure rod 61, and drive the front connecting rod 7 to move forward so that the foot pad frame 8 can be expanded correspondingly; 5 and the supporting shaft 2 respectively support the chair back frame 4 and the seat frame 3 to enhance the stability of the movement. And when the user releases the control button 91, the length of the air pressure rod 61 can be fixed to position the seat back frame 4 elevation angles (as shown in Figures 3 and 5). As shown in Figure 5, the front of the seat frame 3 rises, increasing the angle d between the parallel line with the ground, so that the center of gravity of the user's buttocks naturally slides to the rear of the seat frame 3 when sitting, thus improving riding comfort and stability sex.

The air pressure rod 61 can be compressed correspondingly when the seat back frame 4 is reclined. When the user presses the control button 91 and the foot presses the foot pad frame 8, the restoring force of the air pressure rod 61 can be used to help the seat back frame 4 and the chair. The seat frame 3 recovers, so it can have the convenience of recovery.

Embodiment two:

As shown in Figures 6 and 7 of the second embodiment of the utility model, the auxiliary device 6 is replaced with a spring 62, and other parts are the same, and will not be repeated in this example. The spring 62 can make the backrest frame 4 correspondingly compress when leaning back, and can provide buffering, and help the backrest frame 4 and the seat frame 3 to return through the restoring force of the spring 62, and the length and the maximum compression length of the spring 62 can be limited. The folding and unfolding angles of the chair back frame 4 can form a stepless elastic reclining seat, and the spring 62 also has the aforementioned functions when using a stepless air pressure rod instead.

Embodiment three:

Embodiment 3 shown in Figures 8 and 9 of the utility model is to replace the auxiliary device 6 with an electric telescopic rod 63, which is composed of a motor 631 and a telescopic rod 632. The other parts are the same, and will not be repeated in this example. The electric telescopic rod 63 can automatically control the inclination angles of the chair back frame 4 and the seat frame 3, and the convenience of use is improved through electric control.

The base of the utility model may not be provided with an axle seat, and the support shaft and the seat frame are fixed seats that cannot rotate correspondingly to the base. In addition, cushion bodies can be arranged on the chair back frame, seat frame, and foot pad frame of the utility model, and can be designed to be used by a single person or multiple people.

The above-mentioned embodiment is only a kind of preferred embodiment of the utility model, and the usual changes and replacements carried out by those skilled in the art within the scope of the technical solutions of the utility model should be included in the protection scope of the utility model Inside.

Claims (8)

1. a seat reclining mechanism comprises chair seat frame, chair back rack and foot pad frame, it is characterized in that: increased base, back shaft, front rod, back link and servicing unit; Base and back shaft are located at the chair seat frame below,

The end of back shaft is connected with base, and its central authorities and top are provided with the articulated section respectively;

Described chair seat frame is provided with upper pole part, lower beam portion, and lower beam subordinate side is provided with the articulated section, and articulates by axostylus axostyle and back shaft, and the place ahead of upper pole part and rear are provided with the articulated section respectively;

Described chair back rack is provided with the articulated section, and the articulated section at the upper pole part rear by pin connected assembly and chair seat frame articulates, and chair back rack is provided with extension downwards, and extension is provided with a plurality of articulated sections;

Be provided with back link between the articulated section of back shaft top and the articulated section of chair back rack extension;

Be provided with servicing unit between the articulated section of the upper pole part articulated section of chair seat frame and the extension of chair back rack;

One end of front rod and the articulated section of chair back rack extension articulate, the articulated section of other end connecting pin poppet; Foot pad frame rear is provided with the articulated section and articulates with chair seat frame.

2. by the described a kind of seat reclining mechanism of claim 1, it is characterized in that: be provided with hollow bulb between the upper and lower bar portion of described chair seat frame; Back link, servicing unit and front rod all are located at the place, hollow bulb position of chair seat frame.

3. by the described a kind of seat reclining mechanism of claim 1, it is characterized in that: be installed with handrail on the described chair seat frame.

4. by the described a kind of seat reclining mechanism of claim 1, it is characterized in that: described servicing unit is an atmospheric pressure pole.

5. by the described a kind of seat reclining mechanism of claim 4, it is characterized in that: described atmospheric pressure pole is provided with protruding button and press button, and press button one end is connected with rope, and the other end of rope is provided with control knob.

6. by the arbitrary described a kind of seat reclining mechanism of claim 1-3, it is characterized in that: described servicing unit is a spring.

7. by the arbitrary described a kind of seat reclining mechanism of claim 1-3, it is characterized in that: described servicing unit is the stepless atmospheric pressure pole.

8. by the arbitrary described a kind of seat reclining mechanism of claim 1-3, it is characterized in that: described servicing unit is the electric expansion bar; The electric expansion bar comprises motor and expansion link.

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