CN212878514U - Back hypsokinesis adjustment mechanism - Google Patents

Abstract

The utility model discloses a backrest backward tilting adjusting mechanism, which comprises a back frame, a rotating supporting part, a seat frame and a backrest motor; the lower end of the back frame is fixedly connected with the rotating supporting part, a first guide rod and a second guide rod are respectively arranged between two sides of the rotating supporting part and the seat frame, two ends of the first guide rod and the second guide rod are respectively hinged with the rotating supporting part and the seat frame, and two ends of the backrest motor are respectively hinged with the seat frame and the rotating supporting part; the rotation supporting part, the first guide rod, the second guide rod and the seat frame form a four-bar mechanism, the four-bar mechanism deforms under the action of the backrest motor, the back frame can incline backwards and move forwards integrally, and the back rubbing feeling when the back frame is inclined backwards by adjusting the angle of the back frame by a human body can be effectively eliminated.

Description

Back hypsokinesis adjustment mechanism

Technical Field

The utility model relates to a seat field, in particular to back hypsokinesis adjustment mechanism.

Background

In order to meet different use states of a human body, an included angle between a backrest and a seat cushion can be adjusted, so that the human body can be used in a normal sitting posture or can be used in a backward leaning manner; the existing connecting mechanisms between the backrest and the seat cushion are revolute pairs or revolute pairs, which can also be called hinges, in particular to pin shafts, screw rods and the like; in the existing seat with the connecting mechanism, when the angle of the backrest of a human body is adjusted, the rotating point of the connecting mechanism is far away from the rotating point of the human body, so that the back scapula of the human body and the backrest can relatively displace along with the change of the angle of the backrest and the seat cushion, so that the human body can feel strong 'back rubbing feeling', and cannot feel comfortable.

Disclosure of Invention

The utility model overcomes exist not enough among the above-mentioned prior art, provide a back hypsokinesis adjustment mechanism, back of the body frame with sit and be connected through a rotation supporting part between the frame, back of the body frame lower extreme connect and fix on rotating the supporting part, be equipped with both ends respectively with rotate the supporting part both sides and sit articulated first, second guide arm between the frame, rotate the supporting part and sit and be equipped with the back motor between the frame, rotate supporting part, first, second guide arm and sit the frame and form four-bar linkage, when the back motor shrink, make back of the body frame hypsokinesis and the whole antedisplacement of back of the body frame through the effect of four connecting rods, the antedisplacement laminating human body of can initiatively, "rub the back with the hands and feel when eliminating the back of the body frame hypso.

The technical scheme of the utility model is realized like this:

a backrest backward tilting adjusting mechanism comprises a back frame, a rotating supporting part, a seat frame and a backrest motor for controlling the back frame to tilt; the lower end of the back frame is fixedly connected with the rotating supporting part, a first guide rod and a second guide rod are respectively arranged between two sides of the rotating supporting part and the seat frame, two ends of the first guide rod and the second guide rod are respectively hinged with the rotating supporting part and the seat frame, and two ends of the backrest motor are respectively hinged with the seat frame and the rotating supporting part; the rotation supporting part, the first guide rod, the second guide rod and the seat frame form a four-bar mechanism, and the four-bar mechanism deforms under the action of the backrest motor, so that the back frame can incline backwards and the whole back frame can move forwards. The utility model discloses a backrest back-tilting adjusting mechanism, which is provided with a rotating support part between a back frame and a seat frame, and a first guide rod and a second guide rod, both ends of which are respectively hinged with the rotating support part and the seat frame; the four-bar mechanism formed by the rotating support part, the first guide rod, the second guide rod and the seat frame can effectively enable the back frame to be inclined backwards and the back frame to integrally move forwards through deformation, and the four-bar mechanism with an ingenious structure can effectively eliminate the back rubbing feeling when the angle of the back frame is adjusted by a human body.

Preferably, the rotary supporting part comprises a supporting cross bar and supporting side bars positioned at two sides of the supporting cross bar; the lower ends of the back frame are fixedly connected to the supporting cross rod, and the lower ends of the first guide rod and the second guide rod are respectively hinged to the supporting side rods.

Preferably, the back frame is provided with a downwards protruding square-shaped connecting frame, the supporting cross rod is provided with a mounting seat, and the connecting frame is mounted and fixed in the mounting seat. The back frame is connected with the supporting cross rod through the mounting seat, so that the back frame is more tightly connected with the rotating supporting part, and the whole body is more stable.

Preferably, the two sides of the seat frame are respectively provided with a connecting seat, the connecting seat comprises a first connecting vertical plate and a second connecting vertical plate which are protruded downwards at intervals, the upper end of the first guide rod is hinged with the first connecting vertical plate, and the upper end of the second guide rod is hinged with the second connecting vertical plate.

Preferably, the second connecting vertical plate is located in front of the first connecting vertical plate, and the length of the second connecting vertical plate is longer than that of the first connecting vertical plate.

Preferably, the support side bars are formed by extending along two sides of the support cross bar towards the oblique front and lower direction.

Preferably, the backrest motor is a telescopic electric cylinder, the front end of the seat frame and the rotary supporting part are correspondingly provided with a first connecting lug and a second connecting lug, the head of the telescopic electric cylinder is hinged with the first connecting lug, and the tail of the telescopic electric cylinder is hinged with the second connecting lug.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the utility model provides a backrest hypsokinesis adjusting mechanism, compared with the prior art, the backrest hypsokinesis adjusting mechanism adds a rotation supporting part between a back frame and a seat frame, the lower end of the back frame is connected and fixed on the rotation supporting part, and is provided with a first guide rod and a second guide rod, the two ends of which are respectively hinged with the rotation supporting part and the seat frame, so that the rotation supporting part, the first guide rod and the second guide rod and the seat frame form a four-bar mechanism; a back frame motor is arranged between the back frame and the seat frame to control the movement of the back frame, and two ends of the back frame motor are respectively hinged with the back frame and the seat frame, so that when the back frame motor contracts, the back frame tilts backwards, and simultaneously, the back frame moves forwards integrally under the action of the four connecting rods; the back frame can be actively attached to the human body by tilting backwards and moving forwards at the same time, so that the back rubbing feeling when the human body leans backwards is eliminated, and the human engineering is met.

Drawings

Fig. 1 is a schematic side perspective view of the back frame of the embodiment of the present invention when the back frame is not tilted backward;

fig. 2 is a schematic side perspective view of the back frame of the embodiment of the present invention when the back frame tilts backward half;

fig. 3 is a schematic side perspective view of the embodiment of the present invention when the back frame is tilted backward;

fig. 4 is a schematic perspective view of another angle when the back frame is not tilted backward according to the embodiment of the present invention;

fig. 5 is a schematic perspective view of another angle of the back frame of the embodiment of the present invention when the back frame tilts backward half;

fig. 6 is a schematic perspective view of another angle when the back frame is tilted backward according to the embodiment of the present invention;

fig. 7 is a schematic view of a connection three-dimensional structure of the back frame and the rotation support part in the embodiment of the present invention;

FIG. 8 is an enlarged view of detail A of FIG. 7;

fig. 9 is a schematic back perspective view of the reclining adjusting mechanism according to an embodiment of the present invention;

fig. 10 is a schematic overall perspective view of the reclining adjusting mechanism on a seat according to an embodiment of the present invention;

fig. 11 is a schematic view of a connection three-dimensional structure of the seat frame and the bottom support seat according to the embodiment of the present invention.

Fig. 12 is an enlarged view of a portion B in fig. 11;

the figures are numbered: a seat frame 1; a bottom support base 2; a support base plate 2 a; a support side plate 2 b; a mounting hole 2 c; a telescoping device 3; a seat arm a; a vertical support rod b; a front cross bar 6 a; a rear cross bar 6 b; a left vertical bar 7 a; a right vertical bar 7 b; a reinforcing vertical bar 8; the sliding mechanism 9 is rotated; rotating the slider 10; a guide bar 11; a guide bar cross bar 12; a guide rod vertical bar 13; the mating member 10 a; a groove 14; a telescopic push rod 15; a first support plate 16; a second support plate 17; a first rocker 18; a through hole 19; a rotating shaft 20; a back frame 21; a rotation support portion 22; the support rail 22 a; support side rods 22 b; a back motor 23; a connecting frame 24; a left longitudinal bar 25; a right vertical bar 26; a lower cross bar 27; a mounting seat 28; mounting back plate 28 a; mounting side plate 28 b; a flap 29; a holding frame 30; a holding plate 31; a first guide bar 32; a second guide bar 33; a connecting seat 34; a connection base plate 35; a first connecting upright 36 a; a second connecting riser 36 b; a telescopic electric cylinder 37; the first connecting lug 38 a; and a second engaging lug 38 b.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1 to 12, the present invention first provides a backrest recline adjusting mechanism, which includes a back frame 21, a rotation support portion 22, a seat frame 1, and a backrest motor 23 for controlling the inclination of the back frame 21.

As shown in fig. 10-12, the seat frame 1 is connected and fixed with a bottom support base 2, the bottom support base 2 includes a support bottom plate 2a and support side plates 2b, the support side plates 2b are formed by extending along two sides of the support bottom plate 2a in a forward and upward direction, a mounting hole 2c is formed in the middle of the support bottom plate 2a, and the support bottom plate 2a and the seat arm brace a are rotatably inserted and matched through the mounting hole 2 c; the seat frame 1 is positioned above the bottom supporting seat 2, the seat frame 1 is a frame shaped like a Chinese character 'kou', the seat frame 1 comprises a front transverse rod 6a, a rear transverse rod 6b, a left longitudinal rod 7a, a right longitudinal rod 7b and reinforcing longitudinal rods 8 arranged at intervals, and two ends of each reinforcing longitudinal rod 8 are respectively connected and fixed on the front transverse rod 6a and the rear transverse rod 6 b; the rear end of the seat frame 1 and the rear end of the bottom supporting seat 2 are in rotational sliding fit, and specifically refer to: a rotary sliding mechanism 9 is arranged between the reinforcing longitudinal rod 8 on the seat frame 1 and the supporting side plate 2b on the bottom supporting seat 2, the rotary sliding mechanism 9 comprises a rotary sliding block 10 and a guide rod 11, the guide rod 11 comprises a guide rod cross rod 12 and a guide rod vertical rod 13 extending upwards from two sides of the guide rod cross rod 12 along the vertical direction, and the guide rod vertical rod 13 is fixedly connected to the inner side of the reinforcing longitudinal rod 8; the rotating slide block 10 is formed by folding two folding pieces 10a, grooves 14 are arranged at the upper parts of the folding pieces 10a, and after the two folding pieces 10a are folded, the grooves 14 on the two folding pieces 10a are folded to form a sliding chute in sliding fit with the guide rod cross rod 12; when the device is installed, the guide rod cross rod 12 is matched with the groove 14 on one of the butting parts 10a, then the other butting part 10a is butted with the guide rod cross rod, and the two butting parts 10a are connected and fixed through screws; the two oppositely-combined parts 10a are oppositely combined and fixed to form the rotating slide block 10, and the lower part of the rotating slide block 10 is in running fit with the rear end position of the supporting side plate 2b through the rotating shaft 20, so that the seat frame 1 and the supporting side plate 2b can relatively rotate and slide.

Sit frame 1 and bottom sprag seat 2 between still be equipped with a telescoping device 3, telescoping device 3 be a telescopic push rod 15 the correspondence is equipped with first backup pad 16 and second backup pad 17 on preceding horizontal pole 4 on the seat frame 1 and the supporting baseplate 2a, first backup pad 16 down and the bottom of first backup pad 16 connect and fix on horizontal pole 4 in the front, second backup pad 17 up and the bottom of second backup pad 17 connect and fix on supporting baseplate 2a, telescopic push rod 15's head and first backup pad 16 articulated, telescopic push rod 15's afterbody and second backup pad 17 are articulated.

A first rocker 18 is arranged between the front part of the seat frame 1 and the front end of the supporting side plate 2b, and two ends of the first rocker 18 are respectively hinged with the reinforcing longitudinal rod 8 on the seat frame 1 and the supporting side plate 2b, specifically: through holes 19 are respectively formed in two ends of the first rocker 18, corresponding through holes 19 are formed in the front end position of the reinforced longitudinal rod 8 and the front end position of the supporting side plate 2b, and when the device is installed, after the through holes in the two ends of the first rocker 18 are respectively aligned with the through holes 19 in the reinforced longitudinal rod 8 and the supporting side plate 2b, a rotating shaft 20 is arranged on the through holes 19 in a penetrating mode, so that the upper end of the first rocker 15 is hinged to the reinforced longitudinal rod 8, and the lower end of the first rocker is hinged to the supporting side plate 2 b; and the hinged position between the telescopic push rod 15 and the seat frame 1 is positioned in front of the hinged position between the first rocker 18 and the supporting side plate 2b, so that the seat frame 1 can drive the first rocker 18 to rotate under the action of the telescopic push rod 15.

In conclusion, the bottom support seat 2 can stably support the seat frame 1, and the seat frame 1 can be tilted upwards and moved backwards integrally at the front end of the seat frame 1 under the action of the telescopic device 2.

As shown in fig. 7 and 8, the rotation support portion 22 includes a support cross bar 22a and support side bars 22b respectively connected to two sides of the support cross bar 22a, the support side bars 22b are formed by extending along two sides of the support cross bar 22a in an oblique forward and downward direction, a downwardly protruding "t" shaped connecting frame 24 is provided at an intermediate position of the lower end of the back frame 21, the connecting frame 24 is connected and fixed to the support cross bar 22a, and the specific connection manner is: the connecting frame 24 comprises left and right vertical rods 25, 26 and a lower cross rod 27, a mounting seat 28 is correspondingly arranged at the middle position of the supporting cross rod 22a, the mounting seat 28 includes a mounting back plate 28a and mounting side plates 28b connected to both sides of the mounting back plate 28a, the mounting back plate 28a is welded at the middle position of the supporting cross bar 22a, the front end of the mounting side plate 28b extends along the inner side direction to form a folded plate 29 which can cover the connecting frame 24, and the left and right vertical rods 25, 26 are respectively provided with a clamping frame 30, clamping plates 31 are arranged at the front and back of the clamping frame 30 to clamp the front and back ends of the left and right vertical rods 25, 26, when the device is installed, the clamping frame 30 is firstly fixed on the left and right vertical rods 25, 26 through screws, the connecting frame 24 is then placed in the mounting seat 28 and fixed to the mounting back plate 28a by bolts.

As shown in fig. 1-6, the supporting side bar 22b is respectively provided with a first guide bar 32 and a second guide bar 33 with the left vertical bar 7a and the right vertical bar 7b of the seat frame, and two ends of the first guide bar 32 and the second guide bar 33 are respectively hinged with the supporting side bar 22b and the left vertical bar 7a and the right vertical bar 7b, which specifically means: a connecting seat 34 is respectively arranged on the left and right vertical rods 7a and 7b, the connecting seat 34 comprises a connecting bottom plate 35, the connecting bottom plate 35 is fixedly connected with the upper ends of the left and right vertical rods 7a and 7b through screws, two first and second connecting vertical plates 36a and 36b arranged at intervals extend downwards along the connecting bottom plate, the second connecting vertical plate 36b is positioned in front of the first connecting vertical plate 36a, and the length of the second connecting vertical plate 36b is longer than that of the first connecting vertical plate 36 a; when the device is installed, the lower end of the first guide rod 32 is hinged with the supporting side rod 22b, and the upper end of the first guide rod 32 is hinged with the first connecting vertical plate 36 a; the lower end of the second guide rod 33 is hinged with the supporting side plate 22b, and the upper end of the second guide rod 33 is hinged with the second connecting vertical plate 36 b.

As shown in fig. 4-9, the backrest motor 23 is a telescopic electric cylinder 37, the front cross bar 4 and the mounting back plate 28a on the seat frame 1 are correspondingly provided with a first connecting lug 38a and a second connecting lug 38b, the first connecting lug 38a faces downward and the bottom of the first connecting lug 38a is fixedly connected to the front cross bar 4, the second connecting lug 38b faces downward and the second connecting lug 38b is fixedly connected to the mounting back plate 28a, the head of the telescopic electric cylinder 37 is hinged to the first connecting lug 38a, and the tail of the telescopic electric cylinder 37 is hinged to the second connecting lug 38 b.

As shown in fig. 1 and 4, when the human body is in a normal sitting posture, the telescopic electric cylinder 37 is in an extended state, the back frame 21 is in a back standing state, and the first and second guide rods 32 and 33 are in a backward rotation state; when the angle between the back frame 21 and the seat frame 1 needs to be increased to enable the human body to lean backwards and lie, by controlling the telescopic electric cylinder 37 to contract forwards, as shown in fig. 2 and 5, in the process of contracting forwards the telescopic electric cylinder 37, the telescopic electric cylinder 37 drives the rotary support portion 22 to move forwards, the support side rod 22b on the rotary support portion 22, the first and second guide rods 32 and 33 and the four-bar linkage formed between the seat frame 1 are deformed, the support side rod 22b moves forwards to enable the first and second guide rods 32 and 33 to rotate forwards around the first and second connecting vertical plates 36a and 36b respectively, the back frame 21 connected on the rotary support portion 22 tilts backwards, the angle between the back frame 21 and the seat frame 1 is increased, meanwhile, the height of the lower end of the back frame 21 is reduced and the back frame 21 moves forwards, so that the height of the back frame 21 can be actively reduced and the back frame 21 can move forwards to fit the human body in the process of tilting backwards, the human body feels more comfortable, and the 'back rubbing feeling' is eliminated; after the telescopic electric cylinder 37 is completely contracted, as shown in fig. 3 and 6, at this time, the telescopic electric cylinder 37 is contracted to the foremost position, at this time, the first and second guide rods 32 and 33 are driven by the supporting side rod 22b to rotate forward around the first and second vertical connecting plates 36a and 36b to the maximum limited angle, and at this time, the maximum limited angle is reached between the back frame 21 and the seat frame 1; and the seat frame 1 is kept relatively fixed during the movement of the back frame 21.

Claims (7)

1. A backrest recline adjustment mechanism, characterized in that: comprises a back frame, a rotating support part, a seat frame and a backrest motor for controlling the back frame to incline; the lower end of the back frame is fixedly connected with the rotating supporting part, a first guide rod and a second guide rod are respectively arranged between two sides of the rotating supporting part and the seat frame, two ends of the first guide rod and the second guide rod are respectively hinged with the rotating supporting part and the seat frame, and two ends of the backrest motor are respectively hinged with the seat frame and the rotating supporting part; the rotation supporting part, the first guide rod, the second guide rod and the seat frame form a four-bar mechanism, and the four-bar mechanism deforms under the action of the backrest motor, so that the back frame can incline backwards and the whole back frame can move forwards.

2. The reclining mechanism according to claim 1, wherein: the rotary supporting part comprises a supporting cross rod and supporting side rods positioned on two sides of the supporting cross rod; the lower ends of the back frame are fixedly connected to the supporting cross rod, and the lower ends of the first guide rod and the second guide rod are respectively hinged to the supporting side rods.

3. The reclining mechanism according to claim 2, wherein: the back frame is provided with a connecting frame protruding downwards in a shape like a Chinese character 'kou', the supporting cross rod is provided with a mounting seat, and the connecting frame is fixedly arranged in the mounting seat.

4. The reclining mechanism according to claim 2, wherein: the seat frame both sides be equipped with the connecting seat respectively, the connecting seat include around interval downwardly protruding first, second connection riser, the upper end of first guide arm articulated with first connection riser, the upper end of second guide arm is articulated with second connection riser.

5. The reclining mechanism according to claim 4, wherein: the second connecting vertical plate is positioned in front of the first connecting vertical plate, and the length of the second connecting vertical plate is longer than that of the first connecting vertical plate.

6. The reclining mechanism according to claim 2, wherein: the supporting side rods are formed by extending towards the oblique front lower direction along the two sides of the supporting cross rod.

7. The reclining mechanism according to claim 1, wherein: the backrest motor is a telescopic electric cylinder, a first connecting lug and a second connecting lug are correspondingly arranged at the front end of the seat frame and on the rotating supporting part, the head of the telescopic electric cylinder is hinged with the first connecting lug, and the tail of the telescopic electric cylinder is hinged with the second connecting lug.

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