TWM497968U - Seat structure allowing reclining - Google Patents

Description

Reclining seat structure

The present invention relates to a reclining seat structure, which mainly refers to a structure for changing the position of the back of the human body corresponding to the back of the chair when the posture of the seat is changed to the reclining posture.

The conventional seat has a seat back and can be placed in a reclining posture corresponding to the seat back. As shown in the tenth figure, it is one of the conventional structures, and has a base 1', a seat 2', a seat back 3', and the base 1' is provided with a first pivoting portion 11' on the upper rear side, a guiding portion 12' in the front center, and a guiding rod on the front side of the seat 2' 21', and the guide bar can be displaced at the guiding portion 12', and the second pivoting portion 22' is disposed at the rear end; and the seat back 3' is disposed below the third pivoting portion 31' and the base 1 The first pivoting portion 11' is pivotally connected, and the fourth pivoting portion 32' is disposed under the third pivoting portion 31' to be pivotally connected to the second pivoting portion 22' of the seat 2'. The 3' convex arrangement can be placed against the waist 33' of the waist of the human body.

The aforementioned structure back 3' can provide the occupant to ride in a riding position, and the head corresponds to the 3' a' position of the back of the chair, and the waist b' of the occupant can correspond to the position of the waist 33', and the back 3 When the increase in the reclining amplitude, the seat 2' can be raised and moved forward, and the guide rod 21' can be displaced at the position of the guiding portion 12' of the base 1', so that the back of the occupant can rest in a lying posture. Comfort on the back of the chair 3'.

However, when the backrest 3' reclining angle is increased, the relative position of the back 3' and the back of the human body will be greatly changed. In the figure, the distance between the seat back 3' and the seat 2' reference point c', d' in the riding position is For e', the distance between the reference points c' and d' when lying down is f', the length of the f' is much larger than the length of e', and the length may be about 45~60mm, which causes the back of the human body and the back of the seat 3' Greatly changed, and formed in the figure, the back of the human body corresponds to the back of the chair 3' slip so that the head is in the g' position, which is not comfortable to rest, and can not correspond to the waist 33' when lying on the waist of the human body, and causes The position above the waist abuts against the lumbar support 33', which makes the lying uncomfortable.

The main purpose of the present invention is to provide a structure for changing the position of the back of the human body when the seat posture is changed to the lying posture.

Another object of the present invention is to provide a movable lumbar support on a seat back, and the lumbar support can be designed with a different convex height corresponding to the seat back when the sitting posture and the reclining posture.

The present invention mainly comprises a base, a seat back, two actuating plates, a seat, a front frame and a rear frame, and the two sides of the base have corresponding side frames, the front side is provided with a joint portion, and the rear side is provided with a first pivot. The side of the back of the chair has a side bar, the bottom has a bottom bar, and a side joint is disposed under the two side bars; and the two actuating plates are respectively disposed on the two sides of the base, and The second pivoting portion is pivotally connected to the first pivoting portion at the rear of the base, and the guiding groove engageable with the side engaging portion is disposed directly, and the third and fourth pivoting portions are respectively disposed at different positions of the lower and lower sides; The seat has two side bars, and the fifth pivoting portions of the two side bars are respectively pivotally connected with the third pivoting portions of the two actuating plates, and the joint portions are disposed in front of the two side bars; a position below the seat, and two opposite side plates, and a sixth pivoting portion is disposed behind the second side plate to be pivotally connected to the fourth pivoting portion, and upper and lower engaging columns are disposed in front of the upper and lower engaging columns, respectively Engaging with the joint of the seat and the base, and further providing a seventh pivoting portion; the rear frame having two opposite side plates, and The eighth pivoting portion is disposed at a rear of the side plate to be pivotally connected to the side joint portion of the seat back, and the tenth pivoting portion is disposed in front of the seventh pivoting portion of the front frame, and the seat is in a side of the seat back in the corresponding riding posture. The joint portion is located above the guide groove of the corresponding actuating plate, and when the back of the chair is tilted to the corresponding lying posture angle, the second actuating plate can be driven to indirectly displace the seat and the front frame and the rear frame, and the side joint portion is displaced to the actuating plate. The position below the guide groove is displaced toward the seat to reduce the parallel distance change between the seat back and the seat setting reference point when changing from the riding position to the lying posture, and the function of changing the position of the back of the human body and the back of the seat can be reduced. Good comfort.

Further, the present invention further includes a lumbar support, and the chair is disposed on the bottom rod to provide a lower joint portion, and the rear frame is disposed at the rear with a ninth pivotal connection and a lumbar support; and the lumbar support is disposed at a position below the seat back. The utility model has a bottom side rod portion, a lower bottom rod portion, and the eleventh pivot portion is pivotally connected with the ninth pivot portion of the rear frame, and the bottom rod portion is located at a joint portion below the seat back. When the seat is in the sitting position, the lumbar support is convex in front of the back of the chair, and the back of the chair is tilted to the position of lying down, and the action plate, the front frame and the rear frame are arranged to displace the lumbar toward the back of the chair and reduce the protruding chair. Back height.

Further, the joint under the seat back has an engaging groove for accommodating the bottom portion of the waist, and the width of the engaging groove is larger than the width of the bottom portion of the waist; and further includes two springs, and the two ends of the two springs respectively The side rails of the lumbar support and the side panels of the rear frame are joined, and the combination of the lumbar support and the yaw dynamics can be improved.

Further, the joint portion of the base and the seat respectively has a guide groove, and the guide groove of the base, the seat and the actuating plate are respectively provided with a slider that can be displaced at the guide groove, and the side joint portion of the seat back is disposed. The pillars are engaged, and the joint pillars of the seat back and the upper and lower joint pillars of the front frame are respectively engaged with the sliders on the corresponding guide grooves, and the slider can improve the smoothness of the operation.

Further, the side joint portion of the seat back has an upper and lower arrangement of the engaging piece, and the engaging post is disposed on the engaging piece, and the guiding groove of the actuating plate is arranged in the upper and lower arrangement of the upper and lower engaging pieces, and can be borrowed. Supported by two points to enhance the stability of the actuation support.

Further, the base has two pillars on the side, and the two side frames are respectively disposed on the two side pillars, and the base can also have a pillar in the center, and a horizontal frame is arranged above the pillar, and the two side frames are respectively disposed on the transverse frame 2 side.

In the following embodiments, the same functional components are denoted by the same drawing numbers. Please refer to the first to fourth drawings to respectively show the decomposition of the first embodiment of the present creation, the combined stereoscopic view corresponding to the riding posture state, the combined side view, and the combined front view. The first embodiment of the present invention includes a base 1, a seat back 2, two actuating plates 3, a seat 4, a front frame 5, a rear frame 6, a lumbar support 7, and two sides of the base 1 The struts 11 are provided, and the two side struts 11 are provided with symmetrical side frames 12, and the front side of the two side frames 12 is provided with a slanting guide groove 13 which is gradually increased from the front to the front, and a slider 131 is disposed in the guide groove 13, and A first pivoting portion 14 is disposed behind the two side frames 12, and a fixing button 15 is disposed on the one side frame 12, and the fixing button 15 has an engaging hole 151 and a pressing knob 152.

The side of the seat back 2 has a side bar 21 on the lower side, and a bottom bar 22 on the lower side. The side joint portion 23 is respectively protruded from the corresponding position below the two side bars 21, and the side joint portion 23 has the upper and lower engaging pieces 231. The engaging piece 231 is provided with the engaging post 232, and the lower engaging portion 24 is disposed at the center of the bottom bar 22, and the lower engaging portion 24 is a U-shaped body and has a joint groove 241 at the center.

The two actuating plates 3 are respectively disposed on the two sides of the base 1 , and the second pivoting portion 31 is pivotally connected to the first pivoting portion 14 of the base 1 at the top end, and the guiding slot 32 is disposed directly. And the slider 321 is disposed on the guide groove 32 to engage with the side joint portion 23 of the seat back 2, and the guide groove 32 is arranged up and down, and the slider 321 on the upper and lower alignment guide grooves 32 can be respectively associated with the seat. The joints 232 of the upper and lower rows of the engaging pieces 231 are joined, and the seat back 2 and the actuating plate 3 can be joined by two points to improve the movement and support stability, and the third position of the two actuating plates 3 is respectively set at a different position. Four pivoting portions 33, 34.

The seat 4 has two side bars 41, and the two side bars 41 are connected by a cross bar 42. The rear ends of the two side bars 41 are provided with a fifth pivoting portion 43 and a third pivoting portion 33 of the second actuating plate 3. Then, the two side bars 41 are provided with an oblique guide groove 44 whose height increases from the rear direction toward the front inner side, and a slider 441 is disposed in the guide groove 44.

The front frame 5 is disposed at a position below the seat 4 and has two opposite side plates 51. The two side plates 51 are connected by a connecting rod 52, and the sixth pivoting portion 53 and the second actuating plate 3 are disposed behind the two side plates 51. The four pivoting portions 34 are pivotally connected, and the guide groove 44 of the front seat 2 and the guide groove 13 of the base 1 are respectively disposed to be combined with the sliders 441 and 131 of the guide grooves 44 and 13 respectively. 55, the positioning guide rod 56 is further engaged on the lower side of the engaging post 55, and the locking block 57 is inserted into the guiding rod 56, and the locking block 57 is inserted into the base on the side of the locking block 57, and the fixing button 15 is engaged. The hole 151 is disposed in the insertion post 571, and the screw hole 572 is screwed with the pressing knob 152. When the pressing knob 152 is loosened, the guiding rod 56 can be displaced corresponding to the locking block 57, and the locking guide is tightened when the knob 152 is tightened. The position of the rod 56 is provided; and a seventh pivoting portion 58 is disposed in front of the two side plates 51.

The rear frame 6 has two opposite side plates 61, and the connecting portion 232 of the seat back 2 side joint portion 23 is pivotally connected to the rear end of the side plate 61. A ninth pivoting portion 64 is disposed at a position in front of the connecting portion 63, and a tenth pivoting portion 65 is disposed in front of the two side plates 61 to be pivotally connected to the seventh pivoting portion 58 of the front frame 5.

The lumbar support 7 is disposed at a position below the seat back 2, and has two side rod portions 71, a lower bottom rod portion 72, and the two side rod portions 71 are provided with the eleventh pivot portion 73 and the ninth pivot portion of the rear frame 6 64 is pivotally connected, and the lower bottom rod portion 72 is located at the position of the engaging groove 41 of the joint portion 24 below the seat back 2, and the bottom rod portion 72 has a width smaller than the engaging groove 241, and the spring 74 is disposed at the eleventh pivot portion 73. The two ends of the spring 74 are respectively engaged with the side bars 71 of the waistrest 7 and the side plates 61 of the rear frame 6, and the waistrest 7 can be pivotally connected by the elastic force of the spring 74 to improve the joint stability, and the bottom bar is improved by the bottom bar. The portion 72 is actuated within the range of the engagement groove 241 to limit the yaw angle, and the bottom lever portion 72 can be displaced in the engagement groove 241 when the waistrest 3 is in the corresponding seating posture and the reclining posture.

The front frame 5 and the rear frame 6 of the creation combination can enhance the support of the seat 4, and the change of the back angle of the seat back 2 can drive the second actuating plate 3, the seat 4, the front frame 5, the rear frame 6, and the waist 7 The side engaging portion 23 of the seat back 2 is located above the guide groove 32 of the actuating plate 3 when the seat back 2 is at the corresponding seating posture angle, and the engaging post 54 of the front frame 5 is located behind the guide groove 44 of the corresponding seat 4, The lower joint post 55 is located at a position behind the guide groove 13 of the corresponding base 1, and as shown in the third figure, the set reference point a of the seat back 2 and the set reference point b of the seat 4 have a first distance c, and the waist 7 is raised from the height of the seat back 2 as d.

Please refer to the fifth figure for the angle of the back of the seat back 2, and the sixth and seventh figures for the back of the seat back 2 to the maximum angle state, wherein the seat back 2 is tilted from the seat position to the corresponding lying posture. When the seat back 2 is driven by the second actuating plate 3, the seat 4, the front frame 5 and the rear frame 6 are indirectly actuated, and at the same time, the lumbar support 7 is actuated, and when the seat back 2 is tilted back, the side engaging portion 21 can be provided with the actuating plate 3 The slider 321 is downwardly displaced from the guide groove 32 of the actuating plate 3, and the actuating plate 3 is pivoted by the second pivoting portion 31 corresponding to the base 1 to be lifted downward, and the fifth pivotal connection of the rear of the seat 4 The portion 43 can be lifted up by the third pivoting portion 33 of the actuating plate 3, and the sixth pivoting portion 53 of the front frame 5 can be moved forward by the fourth pivoting portion 34 of the actuating plate 3, and is engaged on the forward moving process. The column 54 can be displaced to the front position of the guide groove 44 of the seat 4, and the lower joint post 55 can be displaced to the front of the guide groove 13 of the base 1, so that the seat 4 can be simultaneously connected to the seat 4 and the base by the front frame 5. 1 link for stable support.

Further, when the side engaging portion 23 below the seat back 2 is displaced downward along the guide groove 32 of the actuating plate 3, it can be moved forward to the lower side of the seat 4, so that the set reference point a and the seat 4 of the seat back 2 are forwardly moved. The foregoing setting reference point b is not parallel to the second distance e and the first distance c corresponding to the seating posture is not greatly different, and the relative position of the back and the seat back 2 when the occupant changes from the riding posture to the lying posture can be avoided. A large change can be reduced, the back will slide greatly along the back of the chair, and comfort can be improved.

When the seat back 2 is tilted back, the front arm frame 5 is moved forward to move the rear frame 6 in front of the rear frame 6 to be positioned upward, and the rear end 8th pivot portion 63 of the rear frame 6 is pivoted corresponding to the seat back 2 So that the position of the ninth pivoting portion 64 can be displaced toward the back of the seat 2, and the height of the waistrest 7 protruding from the back of the seat 2 can be changed, and the height f thereof is higher than the height of the riding posture shown in the third figure. Small, so that the seat back 2 can be flatter when the reclining position is provided, so that the lumbar support 7 does not protrude substantially corresponding to the seat back 2 to enhance the abutment comfort.

However, since the position of the back of the human body corresponding to the back of the human body is not greatly changed due to the change from the riding posture to the lying posture, it is possible to prevent the waistrest 7 from being uncomfortable at the upper position corresponding to the waist of the human body when lying down.

In addition, the guide rod 56 of the front frame 5 can be displaced along the locking block 57 engaged with the fixing button 15 of the base 1 when the creation is changed from the riding posture to the lying posture or the reclining posture and the riding posture, and is adjusted. After the back angle of the chair is tilted, the locking block 57 can be locked with the guiding rod 56 by the tightening pressing 151 knob to position the seat back 2 reclining angle.

Please refer to the eighth embodiment and the second embodiment, and the second embodiment is similar to the first embodiment. The difference is that the center of the base 1 is a pillar 11 and a cross frame 111 is disposed above the pillar 11 . The side frames 12 are disposed on two sides of the cross frame 111, and the combination thereof can be the same as that of the side frame 12 of the base 1 and the two side legs 11 respectively as shown in the first figure.

The slider of the present invention is an unnecessary structure, and can also be replaced by a pulley or other components, and the present invention has a main appeal for the rear frame and the waistrest, and can reduce the human body when changing from the riding posture to the lying posture. The back of the back corresponds to the position of the seat back to greatly change the effect, and the foregoing embodiment is an example of the creation, and is not a limitation of the creation. Any equivalent change according to the spirit of the creation should also belong to the scope of the creation.

1‧‧‧Base
11‧‧‧ pillar
111‧‧‧ transverse frame
12‧‧‧ side frame
13‧‧‧ Guide slot
131‧‧‧ Slider
14‧‧‧First pivotal
15‧‧‧Fixed button
151‧‧‧Join hole
152‧‧‧Forcing the knob
2‧‧‧Back of the chair
21‧‧‧ sidebar
22‧‧‧ bottom pole
23‧‧‧ Side joints
231‧‧‧Joint piece
232‧‧‧joint column
24‧‧‧Under joint
241‧‧‧ joint groove
3‧‧‧ actuation board
31‧‧‧Second pivotal
32‧‧‧ Guide slot
321‧‧‧ Slider
33‧‧‧ Third pivotal
34‧‧‧fourth pivotal
4‧‧‧ seat
41‧‧‧ Sidebar
42‧‧‧crossbar
43‧‧‧ fifth pivotal
44‧‧‧ Guide slot
441‧‧‧ Slider
5‧‧‧ Front shelf
51‧‧‧ side panels
52‧‧‧ linkage
53‧‧‧ sixth pivotal
54‧‧‧Upper joint column
55‧‧‧Under the joint column
56‧‧‧ Guide rod
57‧‧‧Lock block
571‧‧‧ Insert
572‧‧‧ screw holes
58‧‧‧ seventh pivotal
6‧‧‧ rear frame
61‧‧‧ side panels
62‧‧‧ linkage
63‧‧‧eightth pivotal
64‧‧‧The Ninth Pivot
65‧‧‧Tenth pivotal department
7‧‧‧ 腰腰
71‧‧‧ Sidebar
72‧‧‧Bottom part
73‧‧‧The eleventh pivotal
74‧‧‧ Spring
1'‧‧‧Base
11'‧‧‧First pivotal
12'‧‧‧Transfer Department
2'‧‧‧ seat
21'‧‧‧ Guide rod
22'‧‧‧Second pivotal
3'‧‧‧Back of the chair
31'‧‧‧ Third pivotal
32'‧‧‧fourth pivotal
33'‧‧‧ 腰腰

The first figure is an exploded view of the first embodiment of the present creation.

The second figure is a combined perspective view of the first embodiment of the present creation, showing the state of the riding posture.

The third figure is a combined side view of the first embodiment of the present creation, showing the state of the riding posture.

The fourth figure is a front view of the first embodiment of the present invention, showing the state of the ride posture.

The fifth figure is a side view showing the angle of the back portion of the chair in the first embodiment of the present invention.

The sixth figure is a side view of the first embodiment of the present invention in which the back of the chair is tilted to a lying position.

The seventh figure is a side perspective view of the first embodiment of the present invention in which the back of the chair is tilted to a lying position.

The eighth figure is a schematic view of the base of the second embodiment of the present invention.

The ninth drawing is a perspective view of a pedestal combination of the second embodiment of the present invention.

The tenth figure is a schematic view of the side view and action of the conventional seat structure.

1‧‧‧Base

11‧‧‧ pillar

12‧‧‧ side frame

13‧‧‧ Guide slot

131‧‧‧ Slider

14‧‧‧First pivotal

15‧‧‧Fixed button

151‧‧‧Join hole

152‧‧‧Forcing the knob

2‧‧‧Back of the chair

21‧‧‧ sidebar

22‧‧‧ bottom pole

23‧‧‧ Side joints

231‧‧‧Joint piece

232‧‧‧joint column

24‧‧‧Under joint

241‧‧‧ joint groove

3‧‧‧ actuation board

31‧‧‧Second pivotal

32‧‧‧ Guide slot

321‧‧‧ Slider

33‧‧‧ Third pivotal

34‧‧‧fourth pivotal

4‧‧‧ seat

41‧‧‧ Sidebar

42‧‧‧crossbar

43‧‧‧ fifth pivotal

44‧‧‧ Guide slot

441‧‧‧ Slider

5‧‧‧ Front shelf

51‧‧‧ side panels

52‧‧‧ linkage

53‧‧‧ sixth pivotal

54‧‧‧Upper joint column

55‧‧‧Under the joint column

56‧‧‧ Guide rod

57‧‧‧Lock block

571‧‧‧ Insert

572‧‧‧ screw holes

58‧‧‧ seventh pivotal

6‧‧‧ rear frame

61‧‧‧ side panels

62‧‧‧ linkage

63‧‧‧eightth pivotal

64‧‧‧The Ninth Pivot

65‧‧‧Tenth pivotal department

7‧‧‧ 腰腰

71‧‧‧ Sidebar

72‧‧‧Bottom part

73‧‧‧The eleventh pivotal

74‧‧‧ Spring

Claims (8)

The reclining seat structure comprises: a base, two side panels corresponding to the side frame, a front joint portion, a first pivot joint portion at the rear; a seat back, two side side rods, and a lower bottom rod And a side joint portion is disposed under the two side bars: two actuating plates are respectively disposed on the two sides of the base body, and the second pivoting portion is disposed at the top end and pivotally connected to the first pivoting portion behind the base, and Straightly disposed guiding slots engageable with the side engaging portions, and third and fourth pivoting portions respectively disposed at different lower and lower positions; one seat having two side bars, and the rear ends of the two side bars are respectively provided with a fifth pivoting portion respectively The third pivoting portion of the second actuating plate is pivotally connected, and the engaging portion is disposed in front of the two side bars; a front frame is disposed at a position below the seat, and has two opposite side plates, and a sixth pivoting portion is disposed behind the two side plates The fourth pivoting portion is pivotally connected, and the upper and lower engaging posts are disposed in front, and the upper and lower engaging posts are respectively engaged with the joint portion of the seat and the base, and a seventh pivoting portion is further disposed; a rear frame, Having two opposite side plates, and an eighth pivoting portion is disposed behind the side plate and pivoted to the side joint portion of the seat back, front The tenth pivoting portion is pivotally connected to the seventh pivoting portion of the front frame; and the side joint portion of the seat back is located above the corresponding driving plate guide groove in the corresponding seating posture, and the back of the chair is tilted to the corresponding lying position When the posture angle is used, the two actuating plates can be driven to indirectly displace the seat and the front frame and the rear frame, and the side joint portion is displaced to the position below the guide plate guide groove and displaced toward the seat. The reclining seat structure according to claim 1, further comprising a lumbar support, wherein the seat back is provided with a lower joint portion; and the rear frame is provided with a ninth pivot joint at the rear. It is pivotally connected to the waist; the waist is placed under the back of the chair, and has two side bars, the bottom part has a bottom part, and the two side bars are provided with the eleventh pivoting part and the ninth pivot part of the rear frame. Pivot, and the bottom rod portion is located at the joint position below the seat back, and the seat is convexly convex in front of the seat back when the seat is in the corresponding posture, and the action board and the front frame are provided when the back of the chair is tilted to the lying position. The rear frame displaces the lumbar support toward the back of the chair to reduce the height of the lumbar support. The reclining seat structure according to claim 2, wherein the joint portion under the seat back is provided with an engaging groove for accommodating the lumbar bottom rod portion, and the joint groove width is larger than the bottom portion of the lumbar support portion. The width further includes two springs, and the two ends of the two springs are respectively engaged with the side bars of the lumbar support and the side plates of the rear frame. The reclining seat structure according to claim 1 or 2, wherein the joint portion of the base and the seat respectively has a guide groove, and the guide groove of the base, the seat and the actuating plate are respectively disposed In the slider of the displacement of the guide groove, the joint portion of the back of the seat is provided with a joint pillar, and the joint post of the seat back and the upper and lower joint pillars of the front frame are respectively engaged with the sliders on the corresponding guide grooves. The reclining seat structure according to claim 4, wherein the side joint portion of the seat back has upper and lower aligning engaging pieces, and the engaging post is disposed on the engaging piece, and the guiding groove of the actuating plate corresponds to The upper and lower alignment bonding sheets are arranged in an upper and lower arrangement. The reclining seat structure according to claim 1 or 2, wherein the base has two legs on the side, and the two side frames are respectively disposed on the two side pillars. The reclining seat structure according to claim 1 or 2, wherein the base has a pillar in the center, and a cross frame is disposed above the pillar, and the two side frames are respectively disposed on two sides of the transverse frame. The reclining seat structure according to claim 1 or 2, wherein the base is provided with a fixing button on one side frame, and the fixing button has an engaging hole and a pressing knob; and the front frame is placed under one side. The position of the engaging post is engaged with the guiding rod, and the locking block is inserted into the guiding rod, and the locking block has a insertion post on one side thereof and is inserted into the engaging hole of the base fixing button, and a screw hole and a pressing knob are arranged in the insertion post. Screwing.