Downward-pressing type seat with rotary backrest

Abstract

The utility model discloses a press-down type seat with a rotary backrest, which comprises a lower seat cushion and an upper seat cushion arranged on the lower seat cushion and capable of moving up and down, and a rotary backrest device capable of horizontally rotating back and forth is arranged at the backrest position of the upper seat cushion. The seat capable of rotating in the horizontal direction is designed, the use comfort of a user is greatly improved, the use requirements of different users can be met, and large-area popularization and application are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field especially relates to a kind of seat of backrest rotation of down pressure type. BACKGROUND

[0002] Known chair is indispensable furniture in people's life, work, study, and traditional chair is just cushion plus backrest, just for sitting, long time keeps a posture and sits not only easy to be uncomfortable, and will produce some direct occupational diseases, such as lumbago and backache, cervical protrusion etc. As the Chinese utility model patent for grant announcement No.CN206994943U discloses a kind of seat, including backrest and backrest support, the backrest rotates around backrest support by pivot, backrest and backrest support can be relatively rotated, backrest can be flat, it can be seen that the existing seat can only backrest angle of elevation and depression rotation, and the backrest of the existing seat cannot be realized horizontal direction rotation, thus cannot satisfy the use demand of user. SUMMARY

[0003] (One) technical problem to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides a kind of seat of backrest rotation of down pressure type, which is designed to rotate horizontally seat, more conducive to satisfy the use demand of user.

[0005] (Two) technical scheme to be taken

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] A kind of seat of backrest rotation of down pressure type, including lower seat pad and the upper seat pad with up and down activity being set on the lower seat pad, the backrest position of the upper seat pad is provided with the rotating backrest device capable of horizontal rotation.

[0008] Preferably, the rotating backrest device includes a fixed seat provided on the front surface of the backrest position of the upper seat pad, the two sides of the fixed seat are provided with rotating connecting pieces, each rotating connecting piece is provided with a rotating backrest, and the upper seat pad corresponding to each rotating backrest position is provided with a guide slider, the back surface position of the rotating backrest matched with the guide slider is provided with a guide wheel, and the guide wheel slides back and forth along the guide slider to realize the horizontal rotation of the rotating backrest.

[0009] Preferably, each rotating connecting piece includes a connecting seat provided on the fixed seat, a spring piece is provided between the connecting seat and the fixed seat, and the rotating backrest is provided on the connecting seat.

[0010] Preferably, the connecting seat and the fixed seat are connected by bolt fixing.

[0011] Preferably, the elastic member is a torsion spring.

[0012] Preferably, each of the rotating backrests includes a back body, a mounting seat body that matches the connecting seat is provided on the back side of the back body, and the mounting seat body and the connecting seat are fixedly connected by fasteners.

[0013] Preferably, the back body is in an arc shape.

[0014] Preferably, the front of the guide slider is provided with a guide surface that cooperates with the guide wheel.

[0015] Preferably, the guide surface includes a plane portion and a protruding portion, the guide wheel slides back and forth on the plane portion and the protruding portion, and the guide surface is a torsional inclined surface.

[0016] Preferably, two guide surfaces are provided on the guide sliding block, and two guide wheels are provided on the back side of each rotating backrest, and each guide wheel cooperates with one guide surface.

[0017] Preferably, an assembly seat for mounting the guide wheel is provided on the back of the rotating backrest.

[0018] Preferably, the seat backrest is provided with an adjusting device for adjusting the upper and lower positions of the rotating backrest device.

[0019] Preferably, the adjustment device includes an adjustment slider arranged on the back of the lower seat cushion, an adjustment pressure plate is provided on the adjustment slider, a return member is provided between the adjustment slider and the adjustment pressure plate, and a gear portion for adjusting the upper and lower positions of the guide slider is provided on the front of the backrest of the lower seat cushion, and a locking portion cooperating with the gear portion is provided on the back of the guide slider, and the adjustment pressure plate, the adjustment slider and the guide slider are fixedly connected as a whole by fixing members.

[0020] Preferably, the lower seat cushion backrest is provided with a strip groove for the adjustment slider to slide up and down, and a strip hole is opened in the middle of the strip groove, and a positioning column is provided on the adjustment pressure plate, and the positioning column passes through the strip hole to the guide slider, and the fixing part passes through the positioning column to the guide slider, and the return part is provided on the positioning column.

[0021] Preferably, the shift portion is provided on the front side of the lower seat cushion backrest in two rows of multiple protrusions, and each guide sliding block has two corresponding shift portions.

[0022] Preferably, the engaging portion is a card plate for engaging between adjacent protrusions.

[0023] Preferably, the clamping plate is an end face of the guide slider in the width direction, and the clamping plate is arranged at the middle part.

[0024] Preferably, the protrusions are uniformly distributed.

[0025] Preferably, the return member is a spring.

[0026] Preferably, a reset member is arranged between the lower seat pad and the upper seat pad.

[0027] (Three) technical effects to be achieved

[0028] Compared with the prior art, the utility model has the beneficial effects that:

[0029] Firstly, the utility model discloses a lower seat pad and an upper seat pad movably arranged on the lower seat pad, a rotating backrest device capable of rotating back and forth horizontally is arranged at the backrest position of the upper seat pad, the horizontally rotating seat greatly improves the comfort of use of users, and is favorable to meet the use requirements of different users, and is convenient for large-area popularization and application.

[0030] Secondly, the utility model discloses a lower seat pad and an upper seat pad movably arranged on the lower seat pad, a rotating backrest device capable of rotating back and forth horizontally is arranged at the backrest position of the upper seat pad, and the structure is simple, convenient for production and manufacturing, and favorable to reduce production and manufacturing costs, and more favorable to meet the use requirements.

[0031] Thirdly, the utility model discloses a rotating backrest device, which comprises a fixed seat arranged on the front face of the backrest position of the upper seat pad, rotating connecting pieces are arranged on the two sides of the fixed seat, rotating backrests are arranged on each rotating connecting piece, guide sliders are arranged on the upper seat pad corresponding to each rotating backrest position, guide wheels are arranged on the back face position of the rotating backrests matched with the guide sliders, the guide wheels slide back and forth along the guide sliders to realize the horizontal rotation of the rotating backrests, the arrangement is reasonable, favorable to realize the horizontal rotation, and favorable to meet the use requirements of different users. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is an explosion schematic view of the utility model.

[0033] Figure 2 It is a front view of the utility model.

[0034] Figure 3 It is a sectional view in the direction of A-A in the drawing.

[0035] Figure 4 It is a three-dimensional view of the utility model.

[0036] Figure 5The utility model discloses a whole schematic diagram.

[0037] Figure 6 The utility model discloses a lower seat pad and the rotating backrest device structure schematic diagram on the upper seat pad.

[0038] Figure 7 The utility model discloses a lower seat pad and the backrest device exploded schematic diagram on the upper seat pad.

[0039] Figure 8 The utility model discloses a rotating backrest upper guide wheel installation schematic diagram.

[0040] Figure 9 The utility model discloses a guide slider and guide wheel cooperation schematic diagram.

[0041] Figure 10 The utility model discloses a adjusting pressure plate structure schematic diagram.

[0042] Figure 11 The utility model discloses an upper seat pad gear portion structure schematic diagram.

[0043] Figure 12 The utility model discloses an upper seat pad structure schematic diagram.

[0044] Figure 13 The utility model discloses a guide slider on the clamping portion arrangement schematic diagram.

[0045] In the drawing: 1, lower seat pad;2, upper seat pad;3, rotating backrest device;4, adjusting device;5, reset piece;31, fixed seat;32, rotating connecting piece;33, rotating backrest;34, guide slider;35, guide wheel;41, adjusting slider;42, adjusting pressure plate;43, back position piece;44, gear portion;45, clamping portion;321, connecting seat;322, elastic piece;331, back body;332, mounting seat body;341, guide surface;441, boss. DETAILED DESCRIPTION

[0046] In the description of the utility model, need explanation, when the element is called " fixed in " or " set up in " another element, it can be directly on another element or indirectly on another element. When an element is called " connected to " another element, it can be directly connected to another element or indirectly connected to another element.

[0047] In the description of the utility model, it needs to explain, the term "center", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawing, or it is the orientation or positional relationship that the utility model product is usually placed when using, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and can not be understood as indicating or implying relative importance. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. The meaning of "several" is one or more than one, unless otherwise specifically limited.

[0048] In the description of the utility model, it also needs to explain that, unless otherwise specifically provided and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0049] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model is further described in detail below through the drawings and examples. However, it should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0050] Example one: refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 And Figure 7The application discloses a seat with a backrest rotating downward, which comprises a lower seat cushion 1 and an upper seat cushion 2 arranged on the lower seat cushion 1 and capable of moving up and down, wherein a backrest position of the upper seat cushion 2 is provided with a rotating backrest device 3 capable of horizontally rotating back and forth, when a user sits on the upper seat cushion 2, the upper seat cushion 2 moves downward under the gravity of the user, at this time, the rotating backrest device 3 at the backrest position of the upper seat cushion 2 horizontally rotates, so that the user is more suitable and comfortable to sit on, and the experience of the user is greatly improved.

[0051] Embodiment two can be based on embodiment one, as shown in Figures 1 to 9 and Figure 13 The rotating backrest device 3 comprises a fixed seat 31 arranged on the front surface of the backrest position of the upper seat cushion 2, rotating connecting pieces 32 arranged on both sides of the fixed seat 31, rotating backrests 33 arranged on each rotating connecting piece 32, guide sliding blocks 34 arranged on the upper seat cushion 2 corresponding to the positions of each rotating backrest 33, guide wheels 35 arranged on the back surface positions of the rotating backrests 33 and matched with the guide sliding blocks 34, and the guide wheels 35 slide back and forth along the guide sliding blocks 34 to realize the horizontal rotating back and forth (in this embodiment, the front and back swinging back and forth) of the rotating backrests 33, so that the user is better supported after sitting down, and the upper seat cushion 2 moves downward differently due to the different body weights of different people, and then the rotating backrests 33 also rotate at different angles, so that the use requirements of different users are met.

[0052] As shown in Figures 1 to 9 and Figure 13 Each rotating connecting piece 32 comprises a connecting seat 321 arranged on the fixed seat 31, a elastic piece 322 arranged between the connecting seat 321 and the fixed seat 31, and a rotating backrest 33 arranged on the connecting seat 321, the elastic piece 322 is beneficial to the returning of the rotating backrest 33, the structure is relatively simple and convenient to implement, and the connecting seat 321 and the fixed seat 31 are fixedly connected through bolts in this embodiment, so that the connecting seat 321 and the fixed seat 31 are convenient to disassemble and assemble. It is further explained that the elastic piece 322 preferably adopts a torsion spring, which is widely available and convenient to implement, and is beneficial to the returning of the connecting seat 321.

[0053] As shown in Figures 1 to 9 and Figure 13As shown in the figure, each rotary backrest 33 comprises a back body 331, the front of which is used for the user to lean against, and the back of which is provided with a mounting seat body 332 matched with the connecting seat 321, and the mounting seat body 332 and the connecting seat 321 are fixedly connected through fasteners. This arrangement is reasonable, simple in structure, easy to implement, reduces the difficulty of production and manufacturing, and is convenient for disassembly and maintenance in the later period. Further, the back body 331 is arranged in an arc shape, which is more conducive to the user's back to lean against, more comfortable to use, and more conducive to the downward movement of the upper seat pad 2.

[0054] As shown in the figure, Figure 8 As shown in the figure, the front of the guide block 34 is provided with a guide surface 341 matched with the guide wheel 35, which is conducive to better sliding of the guide wheel 35. Further, the guide surface 341 comprises a flat part and a protruding part, and the guide wheel 35 slides back and forth on the flat part and the protruding part. The guide surface 341 is a torsional inclined surface, and the front of the protruding part is an inclined guide surface. This arrangement is more conducive to the sliding of the guide wheel 35, thereby enabling the rotary backrest 33 to rotate better. In this embodiment, two guide surfaces 341 are arranged on the guide block 34, and two guide wheels 35 are arranged on the back of each rotary backrest 33, each guide wheel 35 being matched with a guide surface 341. This is more conducive to the rotation of the rotary backrest 33. Further, an assembly seat for mounting the guide wheel 35 is arranged on the back of the rotary backrest 33, which is more conducive to the mounting of the guide wheel 35.

[0055] In the third embodiment, the second embodiment can be used as a basis, as shown in the figure, Figure 1 , Figure 5 , Figure 7 , Figure 10 , Figure 11 and Figure 13 As shown in the figure, an adjusting device 4 for adjusting the up-down position of the rotary backrest device 3 is further arranged on the backrest position of the lower seat pad 1. This arrangement can adjust the up-down position according to the needs of the user. Specifically, the adjusting device 4 comprises an adjusting block 41 arranged on the back of the backrest of the lower seat pad 1, an adjusting pressure plate 42 arranged on the adjusting block 41, a return piece 43 arranged between the adjusting block 41 and the adjusting pressure plate 42, and a gear part 44 arranged on the front of the backrest of the lower seat pad 1 for clamping the up-down position adjustment of the guide block 34. The back of the guide block 34 is provided with a clamping part 45 matched with the gear part 44. This arrangement enables the guide block 34 to be clamped on the gear part 44 through the clamping part 45 to achieve fixed adjustment of different positions. The adjusting pressure plate 42, the adjusting block 41 and the guide block 34 are fixedly connected as a whole through a fixing piece. This arrangement is reasonable and convenient to set and install.

[0056] As shown in the figure, Figure 1 ,Figure 5 、 Figure 7 、 Figure 10 、 Figure 11 and Figure 12 As shown in the figure, the backrest position of the lower seat cushion 1 is provided with a strip-shaped slot for adjusting the up-down sliding of the sliding block 41, and a strip-shaped hole is opened in the middle of the strip-shaped slot. The adjusting pressure plate 42 is provided with a positioning column, the positioning column penetrates the strip-shaped hole to the guide sliding block 34, the strip-shaped hole can also limit the movement distance of the positioning column, and the fixing member penetrates the guide sliding block 34 from the positioning column. The positioning column is provided with a return member 43. This kind of arrangement is reasonable, simple in structure and easy to implement. In this embodiment, the positioning column, the return member 43 and the fixing member are all two, which is beneficial to strengthen the stability of the connection.

[0057] Among them, the gear part 44 is arranged on the front surface of the backrest of the lower seat cushion 1 in two rows of several protrusions 441, and in this embodiment, the several protrusions 441 are evenly distributed. In order to improve the stability, each guide sliding block 34 corresponds to two gear parts 44, which is beneficial to the more stable clamping of the guide sliding block 34. The clamping part 45 adopts a clamping plate for clamping between adjacent protrusions 441. The clamping plate is at least three, and in this embodiment, the clamping plate is the end face in the width direction of the guide sliding block 34, and the clamping plate in the middle part (two). This kind of arrangement is reasonable, which is more beneficial to the use of users and more simple and convenient to operate.

[0058] Among them, the fixing member adopts a bolt, which is convenient for users to disassemble and install.

[0059] Among them, as shown in the figure, Figure 1 The return member 43 adopts a spring, which is widely available and easy to implement.

[0060] Among them, as shown in the figure, Figure 10 The adjusting pressure plate 42 is provided with a placing groove for placing fingers, which is beneficial to the placement of fingers of users, thereby facilitating the up-down sliding of the adjusting sliding block 41.

[0061] Embodiment four: on the basis of embodiment two or embodiment three, as shown in the figure, Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 The reset member 5 is arranged between the lower seat cushion 1 and the upper seat cushion 2, which is beneficial to the automatic recovery of the upper seat cushion 2 in the absence of people, and is beneficial to the subsequent use. Further description, the reset member 5 adopts a spring, which is easy to implement. Further description, the reset member 5 adopts several, and in this embodiment, five are adopted, which is beneficial to the more stable operation of the upper seat cushion 2.

[0062] When the rotating backrest device 3 is fixed on the front surface of the backrest position of the upper seat cushion 2 by the adjusting device 4, when a person sits on the upper seat cushion 2, the upper seat cushion 2 will move downward, and the rotating backrest 33 on the back surface of the upper seat cushion 2 will slide upward along the guide surface 341 on the front surface of the guide sliding block 34, and due to the inclined guide surface of the flat part and the protruding part, the rotating backrest 33 will be pushed out (i.e., rotated to the side of the human body), which is beneficial to realize the sitting of the user and greatly improve the comfort of the sitting posture, and since the weights of different people are different, the downward movement of the upper seat cushion 2 is different, so that the rotating angle of the rotating backrest 33 is also different, which is beneficial to meet the use requirements of different users. When it is necessary to adjust the position of the rotating backrest device 3, the adjusting pressure plate 42 is only needed to be pressed, the adjusting pressure plate 42 will be pushed out of the guide sliding block 34, the clamping part 45 of the guide sliding block 34 is separated from the gear part 44, and then the adjusting pressure plate 42 and the adjusting sliding block 41 are moved upward and downward, and after the appropriate position is selected, the clamping part 45 of the guide sliding block 34 is clamped in the appropriate gear part 44, so that the rotating backrest device 3 can be fixed in the appropriate position, which is beneficial to the use of the user in the later period. When the highest clamping plate of the guide sliding block 34 is clamped in the highest gear part 44, the rotating backrest 33 will not rotate due to the downward pressing of the upper seat cushion 2, and at this time, the highest clamping plate clamped in the highest gear part 44 of the gear part 44 plays a role in adjusting the angle, and when the highest clamping plate of the guide sliding block 34 is not clamped in the highest gear part 44 of the gear part 44, the higher the gear part 44 clamped by the highest clamping plate of the guide sliding block 34 downward, the greater the rotating angle of the rotating backrest 33, and since the guide surface 341 is a torsional inclined surface, the guide wheel 35 will always contact the torsional inclined surface without separation, the stress is better, the operation is more stable, and the stability is better.

[0063] The standard parts used in the present application file can be purchased from the market, and the specific connection mode of each part adopts the conventional means such as bolts and rivets in the prior art, which will not be described in detail here.

[0064] It should be noted that although the above embodiments have been described in the present text, the patent protection scope of the present utility model is not limited thereby. Therefore, based on the innovative concept of the present utility model, the changes and modifications of the embodiments described in the present text, or the equivalent structure or equivalent process transformation made by using the contents of the present utility model specification and drawings, directly or indirectly apply the above technical solutions to other related technical fields, which are all included in the protection scope of the patent of the present utility model.

Claims

1. A seat with a reclining backrest, characterized in that: Including lower seat pad (1) and set up on the lower seat pad (1) have up and down activity upper seat pad (2), the backrest position of upper seat pad (2) is provided with the rotating backrest device (3) that can horizontally back and forth rotate.

2. The reclining chair of claim 1, wherein: The rotating backrest device (3) includes the fixed seat (31) set up on the front surface of the backrest position of upper seat pad (2), both sides of fixed seat (31) are provided with rotating connecting piece (32), each rotating connecting piece (32) is provided with rotating backrest (33), and the upper seat pad (2) is provided with guide sliding block (34) in the position of each rotating backrest (33), the back surface position of rotating backrest (33) is provided with guide wheel (35) matched with guide sliding block (34), guide wheel (35) slides along guide sliding block (34) back and forth to realize the horizontal back and forth rotation of rotating backrest (33).

3. The reclining chair of claim 2, wherein: Each rotating connecting piece (32) includes connecting seat (321) set up on fixed seat (31), elastic member (322) is arranged between connecting seat (321) and fixed seat (31), and rotating backrest (33) is arranged on connecting seat (321).

4. The reclining chair of claim 3, wherein: Each rotating backrest (33) includes back body (331), and mounting seat body (332) matched with connecting seat (321) is arranged at the back surface position of back body (331), and the mounting seat body (332) and the connecting seat (321) are fixedly connected through fastening pieces.

5. The reclining chair of claim 4, wherein: The back body (331) is arranged in an arc shape.

6. The reclining chair of claim 2 or 3 or 4 or 5, wherein: The front surface of guide sliding block (34) is provided with guide surface (341) matched with guide wheel (35).

7. The reclining chair of claim 6, wherein: The guide surface (341) includes a flat portion and a protruding portion, the guide wheel (35) slides back and forth on the flat portion and the protruding portion, and the guide surface (341) is a twisted inclined surface.

8. The reclining chair of claim 7, wherein: Two guide surfaces (341) are arranged on the guide sliding block (34), two guide wheels (35) are arranged at the back surface position of each rotating backrest (33), and each guide wheel (35) is matched with one guide surface (341).

9. The reclining chair of claim 2 or 3 or 4 or 5, wherein: Further comprising adjusting device (4) arranged at the backrest position of lower seat pad (1) for adjusting the up and down position of rotating backrest device (3).

10. The reclining chair of claim 9, wherein: The adjusting device (4) includes adjusting sliding block (41) arranged on the back of the backrest of lower seat pad (1), adjusting pressing plate (42) arranged on adjusting sliding block (41), return element (43) arranged between adjusting sliding block (41) and adjusting pressing plate (42), and gear portion (44) arranged on the front surface of the backrest of lower seat pad (1) for engaging the up and down position adjustment of guide sliding block (34), the back surface of guide sliding block (34) is provided with engaging portion (45) matched with gear portion (44), and adjusting pressing plate (42), adjusting sliding block (41) and guide sliding block (34) are fixedly connected as a whole by fixing pieces.

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