CN203506076U - Chair structure - Google Patents

Abstract

The utility model discloses a chair structure, which comprises a base, a chair back, a joint frame, a chair seat, an actuating frame and at least one jacking piece, wherein the base is provided with a pin joint part at the upper part, and the front side is provided with a guide rod; the joint frame is arranged on the chair back and is pivoted with the pivoting part of the base; the rear end of the chair seat is pivoted with the joint frame; the rear end of the actuating frame is pivoted with the joint frame, the front end of the actuating frame is provided with a sliding sleeve, and the sliding sleeve is arranged on the guide rod; two ends of the jacking piece are respectively pivoted with the front end of the actuating frame and the front of the chair seat, the sliding sleeve is positioned behind the guide rod when the chair back is not tilted backwards, the jacking piece is not unfolded, the joint frame can be driven to connect the actuating frame and the chair seat to move forwards when the chair back is tilted backwards, and the jacking piece can be synchronously unfolded to enable the front end of the chair seat to move upwards; therefore, the utility model discloses mainly lie and lean on weight can be located the chair back, can have the preferred and lie and lean on the travelling comfort to can have the preferred and support stability efficiency concurrently.

Description

a seat structure

technical field

The utility model relates to a seat structure, which mainly refers to a kind of body weight that can be placed on the back of the chair when the user adjusts from a sitting position to a reclining position, so as to improve reclining comfort and have better support stability.

Background technique

In order to improve the ride comfort, the known seat has an adjustable reclining design of the seat back. As shown in Figure 9, it is one of the known structures. It mainly has a base 1', a seat seat 2', and a seat back 3'. An armrest frame 11' and a guide rod 12' are respectively fixed above and in the center of the base 1'; a sliding sleeve 21' which can be nested with the guide rod 12' is arranged in front of the seat 2', and a pivot is arranged at the rear end of the seat 2'. The connecting part 22'; and the chair back 3' is provided with a pivoting part 31' at the bottom end to be pivotally connected with the pivoting part 21' of the seat 2', and a pivoting part 32' is set in the center and the armrest above the base 1' The rear end of the frame 11' is pivotally connected, so that the seat back 3' and the seat seat 2' can have a smaller riding angle, and the seat back 3' can be reclined, and at the same time drive the seat seat 2' to move forward, and make the chair seat 2' move forward. The sliding sleeve 21' can be displaced to a position in front of the guide rod 12', so that the seat back 3' and the seat 2' can be adjusted to have a larger reclining angle.

However, when the aforementioned structure is reclined, because the seat 2' is only moved forward by the seat back 3', the upward angle θ1 of the front end of the seat 2' is small, so that most of the weight of the human body is still supported by the seat 2' when reclining, which is very difficult. Comfort is less than ideal missing.

Also as shown in Figure 10 is another conventional seat structure, which mainly has a base 4', a seat 5', and a chair back 6', and the seat 5' is provided with a leg rest 51' in front of the seat 5', and the chair seat 5 'A spring 52' is set to engage with the base 4', and the seat back 6' and the seat 5' have a fixed joint angle, and a pivot joint 61' is pivotally connected to the base 4', so that the occupant lies on the seat back When the chair is 6', the chair back 6' and seat 5' can be rotated through the pivot joint 61' and the spring 52' can be stretched to limit the recline angle of the chair back 6', and because the chair seat 5' corresponds to the elevation angle parallel to the ground θ2 can be greatly raised so that most of the user's reclining weight can act on the chair back 6', and it can have better reclining comfort similar to gravity-free flipping.

However, in the aforementioned design, when the seat back 6' is reclined, the seat 5' is correspondingly swayed backward, causing the center of gravity to shift to the position behind the base 4' by a large margin, causing the entire seat to be unstable and topple over. The rising angle θ2 of the seat 5' is much larger than the lying angle of ordinary people, which still causes unsatisfactory lack of comfort.

Utility model content

In order to solve the above-mentioned problems, the utility model provides a kind of main weight that can be placed on the back of the chair when the user adjusts from the sitting position to the reclining position to improve the comfort of reclining. Good support stability.

The technical scheme that the utility model solves its technical problem adopts is:

A seat structure, comprising: a base, on which a guide rod is arranged; a chair back device, which is pivotally connected to the base; On the guide rod; a seat, the rear end is pivotally connected to the seat back device, and the front end is pivotally connected to the control device; the control device is used to drive the seat seat to extend forward and synchronously drive the front end of the seat seat to rise when the seat back device is reclined.

The chair back device includes a chair back and an engaging frame, the engaging frame is arranged on the chair back, and the engaging frame is pivotally connected to the pivot joint of the base.

The control device includes: an actuating frame, the rear end of which is pivotally connected to the joint frame, and the front end is sleeved on the guide rod through a sliding sleeve; The front is articulated so that the sliding sleeve is located behind the guide bar when the chair back is not reclined, and the top holding piece is not unfolded, and when the chair is reclined, it can drive the joint frame to move forward in conjunction with the moving frame and the seat seat, and the top holding piece The upward movement of the front end of the seat can be unfolded synchronously.

The left and right sides of the base are provided with guide rods and upright support columns, and first pivot joints are respectively provided above the two support columns; a third pivot joint is provided below both sides of the joint frame, and A fourth pivotal portion is arranged below the third pivotal portion; a fifth pivotal portion is arranged behind both sides of the seat, and the fifth pivotal portion is pivotally connected to the third pivotal portion of the joint frame, and A sixth pivotal portion is provided in front of the fifth pivotal portion; the actuating frame is provided with two side rods, and the two side rods are connected by a connecting rod, and the two side rods of the actuating frame The rear is provided with a seventh pivot joint, and the seventh pivot joint is pivotally connected with the fourth pivot joint of the joint frame, and the eighth pivot joint and the joint base guide rod are arranged in front of the two side poles. Sliding sleeve; the top holding piece is provided with two, the two ends of the two top holding pieces are respectively provided with a ninth pivot joint and a tenth pivot joint, and the ninth pivot joint is connected with the eighth pivot joint of the actuating frame. The pivot joint is pivotally connected, and the tenth pivot joint is pivotally connected with the sixth pivot joint of the seat.

The utility model also includes a leg rest, the joint frame is provided with a lower joint part, and the seat seat is provided with a front pivot joint part in front of the sixth pivot joint part, and the leg rest is provided in front of the seat seat, and is passed through a connecting rod It is pivotally connected with the joint frame, and the rear pivot joint is set on one side to be pivotally connected with the front pivot joint of the seat, and the eleventh pivot joint is set; the two ends of the connecting rod are respectively pivoted with the joint frame. The joint part and the eleventh pivot joint part of the legs are pivotally connected.

The utility model also includes two elastic components, and the seat seat is provided with a connecting body behind the sixth pivot joint, and the two ends of the two elastic components are respectively connected with the joint body of the seat seat and the ninth pivot joint of the top holding piece. position joint.

The utility model also includes a telescopic rod, and a twelfth pivot joint that can pivotally connect one end of the telescopic rod is arranged under the base, and a fourteenth pivot joint that can pivotally connect the other end of the telescopic rod is arranged at the front end of the seat.

The back of the chair is provided with joining columns under the two sides and at the center of the bottom; The lower bar is provided with an engaging hole to engage with the engaging column of the chair back.

The beneficial effect of the utility model is that: the utility model adopting the above-mentioned structure makes the actuating frame move forward when the back of the chair is leaned back, and then drives the top holding piece to unfold and lifts up simultaneously when the chair seat is pushed forward, and makes the seat correspond to the horizontal direction of the ground It can have a larger included angle; at the same time, the joint frame can drive the leg rest of the connecting rod to expand, so that when the user is reclining, the seat has a large upward angle so that most of the body weight can be located on the back of the chair, which can be better. Comfortable reclining, and because the seat not only rises but also moves forward when the chair is reclined, the weight acting on the front and rear sides of the base can be more even and will not tip over, which can have better support stability and safety effects At the same time, the reclining action of the chair can stretch the elastic component when the moving frame moves forward, and the elastic component can be used to buffer the reclining force of the chair to have better movement smoothness and safety, and the user wants to make the chair back recover In the supine state, the elastic recovery force of the elastic component can be used to facilitate the reverse recovery action of the chair back.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the exploded view of the first embodiment of the present utility model;

Fig. 2 is a combination diagram of the first embodiment of the utility model in which the chair back is not reclined;

Fig. 3 is a side view of the first embodiment of the utility model in a state where the chair back is not reclined;

Fig. 4 is a perspective view of the backrest state of the chair of the first embodiment of the present invention;

Fig. 5 is a side view of the first embodiment of the utility model in the backrest state of the chair;

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

Fig. 7 is a side view of the second embodiment of the utility model when the chair back is not reclined;

Fig. 8 is a side view when the chair of the second embodiment of the present invention is leaning back;

Fig. 9 is a schematic diagram of a conventional seat structure;

Fig. 10 is a schematic diagram of another known seat structure.

Explanation of symbols in the figure:

1 Base 11 Support column 12 First pivot joint

13 Guide rod 14 Armrest frame 15 Twelfth pivot joint

2 chair back 21 joint column 3 joint frame

31 Side rod 311 Engagement hole 32 Lower rod

321 Engagement hole 33 Second pivot joint 34 Third pivot joint

35 Fourth pivot joint 36 Lower pivot joint 4 Seats

41 fifth pivot joint 42 sixth pivot joint 43 front pivot joint

44 joint body 45 fourteenth pivot joint 5 actuating frame

51 Side rod part 52 Connecting rod part 53 Seventh pivot joint part

54 Eighth pivot joint 55 Sliding sleeve 6 Top holding piece

61 Ninth pivot joint 62 Tenth pivot joint 7 Leg rest

71 Connecting rod 72 Rear pivot joint 73 Eleventh pivot joint

8 Elastic components 9 Telescopic rods

1’seat 11’armrest frame 12’guide rod

2'seat 21'sliding sleeve 22'pivot joint

3’back 31’hinge 4’base

5'seat 51'leg rest 6'back

61' pivot joint.

Detailed ways

Referring to Figures 1 to 3, as shown in the figure is the first embodiment of the present utility model, which specifically includes a base 1, a chair back 2, an engaging frame 3, a seat 4, an actuating frame 5, two A top holding piece 6, a leg rest 7, two elastic components 8, and the left and right sides of the base 1 are provided with upright support columns 11, and first pivot joints 12 are respectively arranged above the two support columns 11, A guide rod 13 is arranged below the front side, and an armrest frame 14 is joined above the support column 11 , and the armrest frame 14 is joined with the front end of the guide rod 13 .

The chair back 2 is provided with engaging columns 21 at the bottom of the two sides and at the center of the bottom.

The joint frame 3 is located at the front position of the bottom of the chair back 2, including two side bars 31, and a lower bar 32 is arranged below the two side bars 31 to connect, and the two side bars 31 and the lower bar 32 are provided with engaging holes 311, 321 and the seat back. 2, the joint column 21 is joined, and the second pivotal part 33 is arranged on the two side bars 31 to be pivotally connected with the first pivotal part 12 of the base 1, and the third pivotal part 34 is set under the two side bars 31, and A fourth pivotal portion 35 is disposed below the third pivotal portion 34 , and a lower pivotal portion 36 is disposed on the lower rod 32 .

The seat seat 4 is provided with a fifth pivot joint 41 behind both sides, and the fifth pivot joint 41 is pivotally connected with the third pivot joint 34 of the joint frame 3, and a sixth pivot joint is arranged in front of the fifth pivot joint 41. Connecting portion 42 , and a front pivoting portion 43 is provided in front of the sixth pivoting portion 42 , and an engaging body 44 is disposed behind the sixth pivoting portion 43 .

The rear end and the front end of the actuating frame 5 are engaged with the engaging frame 3 and the guide rod 13 of the base 1 respectively, and the actuating frame 5 includes rod portions 51 on both sides, and the rod portions 51 on both sides are connected by a connecting rod portion 52. The seventh pivot joint 53 is arranged behind the poles 51 on both sides, and the seventh pivot joint 53 is pivotally connected to the fourth pivot joint 35 of the joint frame 3, and the eighth pivot joint is arranged in front of the poles 51 on both sides. 54 and the sliding sleeve 55 that can engage the guide rod 13 of the base 1.

The two ends of the two top holding pieces 6 are pivotally connected with the actuator frame 5 and the seat 4 respectively, and the ninth pivot joint 61 and the tenth pivot joint 62 are respectively arranged at the two ends of the top holding piece 6 , and the ninth pivot joint The portion 61 is pivotally connected to the eighth pivotal portion 54 of the actuator frame 5 , and the tenth pivotal portion 62 is pivotally connected to the sixth pivotal portion 42 of the seat 4 .

The leg rest 7 is arranged in front of the seat 4, and the connecting rod 71 is pivotally connected with the joint frame 3, so that the leg rest 7 can be folded and expanded corresponding to the seat 4, and the leg rest 7 is provided with a rear pivot joint 72 on one side. It is pivotally connected with the front pivotal part 43 of the seat 4; the eleventh pivotal part 73 is provided; and the two ends of the connecting rod 71 are respectively connected with the eleventh pivotal part 36 under the joint frame 3 and the eleventh pivotal part of the leg rest 7 Part 73 is pivotally connected.

The two ends of the elastic component 8 are respectively jointed with the connecting body 44 of the seat 4 and the ninth pivotal portion 61 of the holding piece 6 .

The sliding sleeve 55 of the actuating frame 5 can be positioned at the rear position of the guide rod 13 when the seat back 2 is not reclined after the combination of the utility model, and the leg rest 7 is in a folded state, and the top holding sheet 6 is in an undeployed state.

As shown in Figure 4 and Figure 5, the utility model adopting the above-mentioned structure can drive the joint frame 3 to pivot at the position corresponding to the first pivotal part 12 of the base 1 when the chair back 2 is reclined, and the joint frame 3 can be brought The moving frame 5 and the seat 4 move forward and the sliding sleeve 55 is positioned in front of the guide rod 13, and because the front of the guiding rod 13 is connected with the armrest frame 14, the forward distance of the sliding sleeve 55 can be limited, and the moving frame 5 can be moved forward. It can drive the top holding piece 6 to expand in the vertical direction and lift up synchronously when holding the seat 4 forward, and make the seat 4 correspond to the horizontal direction of the ground to have a larger angle θ3, and the joint frame 3 can drive the connecting rod 71 and The leg rest 7 unfolds, so that most of the body weight can be placed on the seat back 2 due to the large upward angle of the seat 4 when the user is reclining, which can provide better reclining comfort. 4 In addition to raising, it also moves forward, so the weight acting on the front and rear sides of the base 1 is more even and will not tip over, which can have better support stability and safety effects.

When the chair seat 4 of the utility model is lifted up, the top holding piece 6 and the sliding sleeve 55 can be joined with the guide rod 13 to support the front end of the seat seat 4 at the same time, which can have better support stability, and the aforementioned chair back 2 moves back to make the actuating frame 5. When moving forward, the elastic component 8 can be stretched, and the reclining force of the chair back 2 can be buffered by the elastic component 8 so as to have better movement smoothness and safety. The elastic recovery force of the elastic component 8 is used to make the seat back 2 recover.

Referring to Fig. 6 and Fig. 7, as shown in the figure is the second specific embodiment of the present utility model, which is roughly the same as the first specific embodiment, except that it also includes a telescopic rod 9, and no spring is provided, The twelfth pivot joint 15 that can be pivotally connected to one end of the telescopic rod 9 is set under the base 1, and the fourteenth pivot joint 45 that can pivotally connect the other end of the telescopic rod 9 is arranged at the front end of the seat 4. The telescopic rod 9 is linked by the motor, so that when the telescopic rod 9 is closed, the seat back 2 can be positioned in the unreclined state, and when the telescopic rod 9 is unfolded as shown in Figure 8, it can directly drive the seat 4 to move forward, and the chair seat 4. Drive the moving frame 5 to move forward, the top holding piece 6 to unfold, the back of the chair 2 to lean back, and the leg rest 7 to unfold synchronously, so that the utility model can have the functions of lying comfortably and stabilizing the center of gravity, and the aforementioned structure is composed of a telescopic rod 9 can force and automatically make the chair back 2 recline or retract, which can have better operation convenience.

Based on the above description, the utility model can have the effect of approaching gravity-free deflection comfort when the chair is reclined, and most of the weight acts on the back of the chair when reclining, and the seat can be moved forward and raised correspondingly. Better motion stability and stable center of gravity safety effect, and the utility model can also have the appeal effect of the utility model when the leg rest is not installed, and the sliding sleeve of the utility model can also be set to be locked with the guide rod The device (not shown in the figure) has a better positioning effect, and the above-mentioned specific implementation is an example of the utility model, not a limitation of the utility model, and any equivalent changes made according to the spirit of the utility model should also belong to the category of the utility model Inside.

Claims (8)

1. a seat structure, is characterized in that comprising: a pedestal, is provided with guide rod on pedestal; One chair back device, with pedestal pivot joint; One actuation means, one end is articulated on chair back device, and the other end is set on guide rod by sliding sleeve; One seat support, rear end and chair back device pivot joint, front end and actuation means pivot joint; Actuation means for driving seat support to stretch forward and synchronously driving seat support front end to raise up when chair back device is swung back.

2. a kind of seat structure as claimed in claim 1, is characterized in that: described chair back device comprises the chair back and connecting frame, and described connecting frame is arranged on the chair back, the articulated section pivot joint of connecting frame and pedestal.

3. a kind of seat structure as claimed in claim 2, is characterized in that: described actuation means comprises: one makes moving frame, rear end and connecting frame pivot joint, and front end is set on guide rod by sliding sleeve; At least one top holding piece, these top holding piece two ends respectively with do moving frame front end and the pivot joint of seat support the place ahead, and sliding sleeve is positioned at guide rod rear when the chair back is not swung back, and top holding piece does not launch, in chair back when layback, can drive connecting frame interlock to do moving frame and seat support reach again, and the action that can synchronous expansion seat support front end raises up of this top holding piece.

4. a kind of seat structure as claimed in claim 3, is characterized in that: the arranged on left and right sides of described pedestal is provided with guide rod and upright support post, and in two support column tops, the first articulated section is set respectively; The down either side of described connecting frame is provided with the 3rd articulated section, and below, the 3rd articulated section is provided with the 4th articulated section; Two proceeds posterolateral of described seat support arrange the 5th articulated section, and the 3rd articulated section pivot joint of the 5th articulated section and connecting frame, in the 5th the place ahead, articulated section, the 6th articulated section are set again; Two the side lever portions that are equipped with are set up in described start, and these two side lever portions are linked by link rod part, described two side lever portion rears making moving frame are provided with the 7th articulated section, and the 4th articulated section pivot joint of the 7th articulated section and connecting frame, the 8th articulated section and sliding sleeve that can engaged with base guide rod are set in two side lever portion the place aheads again; Described top holding piece is provided with two, and the two ends of these two top holding pieces arrange respectively the 9th articulated section, the tenth articulated section, and the 9th articulated section and the 8th articulated section pivot joint of making moving frame, the 6th articulated section pivot joint of the tenth articulated section and seat support again.

5. a kind of seat structure as claimed in claim 4, it is characterized in that: it also comprises that leg leans on, described connecting frame is provided with lower junction surface, this seat support arranges front articulated section in the 6th the place ahead, articulated section again, this leg is by being located at seat support the place ahead again, and by a connecting rod and connecting frame pivot joint, this leg is against a side rear articulated section and seat support articulated section pivot joint is before set again, and the 11 articulated section is set again; Again these connecting rod two ends respectively with connecting frame under the 11 articulated section pivot joint of leaning on of articulated section and leg.

6. a kind of seat structure as described in claim 4 or 5, it is characterized in that: it also comprises two elastic parts, seat support arranges conjugant in the 6th rear position, articulated section again, again the two ends of these two elastic parts respectively with the 9th articulated section engagement position of conjugant and the top holding piece of seat support.

7. a kind of seat structure as described in claim 4 or 5, it is characterized in that: it also comprises expansion link, this pedestal below arranges the 12 articulated section that can pivot joint expansion link one end again, and the 14 articulated section that can the pivot joint expansion link other end in the setting of seat support front position.

8. a kind of seat structure as described in claim 4 or 5, is characterized in that: the described chair back arranges bond post in down either side and bottom center; Connecting frame is located at chair back bottom anterior position again, and connecting frame comprises two side levers, and two side levers belows connect by a lower beam, and these two side levers and lower beam arrange conjugate foramen and engage with the bond post of the chair back again.

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