Seat and chair back framework

Abstract

The utility model discloses a chair and a chair back framework. The chair back framework comprises a keel, a chair back and a chair back, the chair back bracket is connected to the upper part of the keel in a sliding manner along the vertical direction; the elastic piece is vertically arranged in the vertical direction, one end of the elastic piece is fixedly connected with the chair back support, the other end of the elastic piece is fixedly connected with the keel, and when the chair back support is leaned on, the chair back support slides down relative to the keel, and the elastic piece is stretched or compressed; the height position of the chair back bracket is adjusted in a self-adaptive manner; and when the chair back bracket is released from leaning, the elastic piece automatically resets and drives the chair back bracket to reset to an initial position. When the chair back support is leaned on, the chair back support is pressed to slide down, when the chair back support slides down to a proper height position, the elastic piece does not deform due to downward pressing force, at the moment, the position of the chair back support is the position matched with a user, and therefore self-adaptive adjustment of the chair back framework is achieved.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a seat and a backrest frame. Background Technology

[0002] Most existing chair backs are fixed, with only a few offering height adjustment. Furthermore, manual adjustment is required before or after sitting down to achieve a comfortable position, failing to provide an immediate, comfortable fit. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a chair back frame that, by incorporating an elastic element, allows the chair back support to slide down to a suitable position when the user leans against it, thus achieving self-adjustment of the chair back frame.

[0004] This utility model further proposes a seat.

[0005] According to a first aspect of the present invention, a chair back frame includes: a keel; a chair back support slidably connected to the upper part of the keel in a vertical direction; and an elastic member, which is vertically arranged in a vertical direction, with one end fixedly connected to the chair back support and the other end fixedly connected to the keel. When the chair back support is leaned against, the chair back support slides down relative to the keel, and the elastic member is stretched or compressed to adaptively adjust the height position of the chair back support. When the chair back support is released from leaning, the elastic member automatically resets and drives the chair back support to return to its initial position.

[0006] According to the embodiment of this utility model, the upper and lower ends of the elastic element are connected to the keel and the chair back support, respectively. When the chair back support is leaned against, it slides down under pressure. When it slides to a suitable height, the downward pressure will no longer cause the elastic element to deform. At this time, the position of the chair back support is the position matched by the user, thereby realizing the self-adjustment of the chair back frame. When the user is released from leaning, the elastic element automatically resets and the chair back support returns to its initial position.

[0007] According to some embodiments of the present invention, the chair back frame further includes: a cover plate, the cover plate being slidably disposed on the chair back support, the cover plate passing through the chair back support and being fixedly connected to the keel, the elastic member being disposed on the side of the cover plate away from the chair back support, one end of the elastic member being fixedly connected to the cover plate, and the other end being fixedly connected to the chair back support.

[0008] According to some embodiments of the present invention, the chair back support is provided with a strip-shaped groove extending in the vertical direction, and a strip-shaped through hole is formed at the bottom of the strip-shaped groove. The cover plate is slidably placed in the strip-shaped groove and the cover plate passes through the strip-shaped through hole and is fixedly connected to the keel.

[0009] According to some embodiments of the present invention, the chair back support includes: a chair back support frame and at least two support ribs, the two ends of the at least two support ribs in the vertical direction are respectively connected to the chair back support frame, and each of the at least two support ribs is provided with the strip groove and the strip through hole.

[0010] According to some embodiments of this utility model, the dimension of the strip-shaped through hole in the vertical direction or the sliding stroke of the chair back support is equal to the elastic deformation provided by the elastic element.

[0011] According to some embodiments of the present invention, a first connecting portion is provided on the cover plate, and a second connecting portion is provided on the backrest support at a position higher than the upper part of the cover plate or lower than the lower part of the cover plate. One end of the elastic member is connected to the first connecting portion, and the other end is connected to the second connecting portion.

[0012] According to some embodiments of the present invention, the chair back frame further includes: a mounting plate, the mounting plate being fixed on the keel, and the cover plate passing through the chair back bracket and being fixedly connected to the mounting plate.

[0013] According to some embodiments of the present invention, the keel is provided with a mounting groove extending in the vertical direction, the mounting plate is fixed in the mounting groove, the mounting plate is provided with a protrusion and a first mounting hole is formed on the protrusion, and a second mounting hole corresponding to and cooperating with the first mounting hole is formed on the cover plate.

[0014] According to some embodiments of the present invention, the chair back support is slidably connected to one side of the keel in the front-back direction, and the chair back support and the keel are attached to each other in the front-back direction.

[0015] The seat according to a second aspect of the present invention includes: the aforementioned backrest frame.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1This is a first-view structural schematic diagram of the chair back frame according to an embodiment of the present utility model;

[0019] Figure 2 This is a structural schematic diagram of the chair back frame from a second perspective according to an embodiment of the present utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a structural schematic diagram of the chair back frame from a third-view perspective according to an embodiment of the present utility model;

[0022] Figure 5 This is an exploded view of the chair back frame according to an embodiment of the present utility model.

[0023] Figure 6 This is an exploded view of the chair back frame according to an embodiment of the present utility model from a second perspective.

[0024] Figure 7 This is a schematic diagram of the cover plate according to an embodiment of the present utility model;

[0025] Figure 8 This is a schematic diagram of the mounting plate according to an embodiment of the present utility model.

[0026] Figure label:

[0027] 200. Chair back frame;

[0028] 210. Keel; 2101. Mounting slot;

[0029] 220. Chair back support; 2201. Strip groove; 2202. Strip through hole; 2203. Chair back support frame; 2204. Support rib; 2205. Second connecting part;

[0030] 230. Elastic components;

[0031] 240, cover plate; 2401, first connecting part; 2402, second mounting hole;

[0032] 250, Mounting plate; 2501, Protrusion; 2502, First mounting hole; 2503, Third mounting hole. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0034] The following is for reference. Figures 1-8 Describes the chair back frame according to an embodiment of the present utility model.

[0035] like Figures 1-6 As shown, the chair back frame 200 includes a keel 210, a chair back support 220, and an elastic member 230. The chair back support 220 is slidably connected to the upper part of the keel 210 in the vertical direction. The elastic member 230 is vertically arranged in the vertical direction, with one end fixedly connected to the chair back support 220 and the other end fixedly connected to the keel 210. When the chair back support 220 is leaned against, the chair back support 220 slides down relative to the keel 210, and the elastic member 230 is stretched or compressed to adaptively adjust the height position of the chair back support 220. When the chair back support 220 is released from the leaning position, the elastic member 230 automatically resets and drives the chair back support 220 back to its initial position.

[0036] Specifically, the keel 210 is located on the lower back of the user, and the backrest support 220 is located on the upper back of the user. The backrest support 220 is slidably connected to the keel 210, allowing the backrest support 220 to slide relative to the keel 210 in the vertical direction. Thus, by adjusting the height of the backrest support 220, the support for the upper back of the user can be adjusted. The elastic element 230 is connected to the keel 210 and the backrest support 220 at its two ends in the vertical direction, respectively. When the backrest support 220 is leaned against, it slides down under pressure. When it reaches a suitable height, the downward pressure no longer causes the elastic element 230 to deform. At this point, the position of the backrest support 220 is the position matched to the user, thereby achieving self-adjustment of the backrest frame 200. Furthermore, when the backrest support 220 slides down relative to the keel 210, the elastic element 230 is stretched or compressed depending on its connection position with both the keel 210 and the backrest support 220. For example, if the upper end of the elastic element 230 is connected to the keel 210 and the lower end is connected to the backrest support 220, the elastic element 230 is stretched when the backrest support 220 slides down. Alternatively, if the upper end of the elastic element 230 is connected to the backrest support 220 and the lower end is connected to the keel 210, the elastic element 230 is compressed when the backrest support 220 slides down. When the backrest support 220 is released from its resting position, the elastic element 230 returns to its original deformation, and the backrest support 220 resets to its initial position under the elastic force of the elastic element 230.

[0037] Therefore, by connecting the two ends of the elastic element 230 along the vertical direction to the keel 210 and the backrest support 220 respectively, when the backrest support 220 is leaned against, the backrest support 220 is pressed down and slides down. When it slides to a suitable height position, the downward pressure will no longer cause the elastic element 230 to deform. At this time, the position of the backrest support 220 is the position matched to the user, thereby realizing the adaptive adjustment of the backrest frame 200. When the backrest support 220 is not leaned against, the elastic element 230 automatically resets and the backrest support 220 resets to its initial position.

[0038] According to some embodiments of the present invention, the chair back frame 200 further includes: a cover plate 240, which is slidably covered on the chair back support 220. The cover plate 240 passes through the chair back support 220 and is fixedly connected to the keel 210. An elastic member 230 is disposed on the side of the cover plate 240 away from the chair back support 220. One end of the elastic member 230 is fixedly connected to the cover plate 240, and the other end is fixedly connected to the chair back support 220.

[0039] Reference Figure 3 , Figures 5-8 As shown, a cover plate 240 is placed over the backrest support 220 and passes through the backrest support 220 to be fixedly connected to the keel 210. An elastic element 230 is disposed on the side of the cover plate 240 facing away from the backrest support 220. It can be understood that the elastic element 230, cover plate 240, backrest support 220, and keel 210 are stacked sequentially in the front-back direction of the seat, and the cover plate 240 slidably connects the backrest support 220 and the keel 210, meaning the backrest support 220 can slide up and down relative to the keel 210 and cover plate 240. Furthermore, one end of the elastic element 230 is fixedly connected to the keel 210 via the cover plate 240, and the other end is fixedly connected to the backrest support 220. When the backrest support 220 is pressed down and slides down, the elastic element 230 is deformed by the pressure. When it slides down to a suitable height, the downward pressure will no longer cause the elastic element 230 to deform. At this time, the position of the backrest support 220 is the position matched by the user, thereby realizing the adaptive adjustment of the backrest frame 200.

[0040] According to some embodiments of this utility model, a strip-shaped groove 2201 extending in the vertical direction is provided on the chair back support 220. A strip-shaped through hole 2202 is formed at the bottom of the strip-shaped groove 2201. A cover plate 240 is slidably placed in the strip-shaped groove 2201, and the cover plate 240 passes through the strip-shaped through hole 2202 and is fixedly connected to the keel 210. (Refer to...) Figure 3 , Figures 5-8 As shown, the cover plate 240 is placed in the strip groove 2201 and can slide up and down, and passes through the strip to be fixedly connected to the keel 210. For example, it can be fixedly installed using fasteners.

[0041] According to some embodiments of the present invention, the chair back support 220 includes: a chair back support frame 2203 and at least two support ribs 2204. The two ends of the at least two support ribs 2204 in the vertical direction are respectively connected to the chair back support frame 2203. Each of the at least two support ribs 2204 is provided with a strip groove 2201 and a strip through hole 2202.

[0042] Reference Figure 6As shown, the chair back support frame 2203 serves as the outline area for the human body to lean against, and the support ribs 2204 are used to support the human back. At least two support ribs 2204 are provided with strip grooves 2201 and strip passages to allow the chair back support 220 to slide horizontally up and down, thereby ensuring the balance of the sliding of the chair back support 220.

[0043] According to some embodiments of the present invention, the dimension of the strip-shaped through hole 2202 in the vertical direction or the sliding stroke of the chair back support 220 is equal to the elastic deformation provided by the elastic element 230.

[0044] As the backrest support 220 slides down when a person leans against it, the backrest support 220 slides relative to the cover plate 240. The sliding stroke of the backrest support 220 is consistent with / equal to the maximum deformation of the elastic element 230 under normal operation. That is, the elastic element 230 can provide the limit position for the backrest support 220 to slide down, and this limit position meets the usage range of users of different heights.

[0045] Similarly, since the backrest support 220 slides relative to the cover plate 240, according to the principle of relative motion, the cover plate 240 slides up and down within the range of the strip-shaped through hole 2202. Since the vertical dimension of the strip-shaped through hole 2202 is consistent with / equal to the elastic deformation of the elastic element 230, the elastic element 230 can provide the limit position for the backrest support 220 to slide down.

[0046] According to some embodiments of the present invention, a first connecting part 2401 is provided on the cover plate 240, and a second connecting part 2205 is provided on the backrest support 220 at a position higher than the upper part of the cover plate 240 or lower than the lower part of the cover plate 240. One end of the elastic member 230 is connected to the first connecting part 2401, and the other end is connected to the second connecting part 2205.

[0047] Reference Figure 3 , Figures 5-8 As shown, the backrest support 220 is provided with a second connecting part 2205 at a position lower than the cover plate 240. The upper end of the elastic member 230 is connected to the first connecting part 2401 on the cover plate 240, and the lower end is connected to the second connecting part 2205. When the backrest support 220 is pressed down, the elastic member 230 is stretched until the downward pressure no longer causes the elastic member 230 to deform. At this time, the position of the backrest support 220 is the position matched by the user, thereby realizing the adaptive adjustment of the backrest frame 200.

[0048] In this embodiment, both the first connecting part 2401 and the second connecting part 2205 are cylindrical protrusions 2501. The two ends of the elastic member 230 are hooked onto the first connecting part 2401 and the second connecting part 2205 respectively, and screws are used to tighten them to fix the elastic member 230.

[0049] According to some embodiments of the present invention, the chair back frame 200 further includes: a mounting plate 250, which is fixed on the keel 210, and a cover plate 240 passes through the chair back bracket 220 and is fixedly connected to the mounting plate 250.

[0050] Reference Figure 3 , Figures 5-8 As shown, a mounting plate 250 is fixed on the keel 210 so that the cover plate 240 passes through the chair back bracket 220 and is fixed to the mounting plate 250, thereby improving the connection between the keel 210 and the chair back bracket 220.

[0051] According to some embodiments of the present invention, the keel 210 is provided with a mounting groove 2101 extending in the vertical direction, the mounting plate 250 is fixed in the mounting groove 2101, the mounting plate 250 is provided with a protrusion 2501, and a first mounting hole 2502 is formed on the protrusion 2501, and a second mounting hole 2402 corresponding to and cooperating with the first mounting hole 2502 is formed on the cover plate 240.

[0052] Reference Figure 3 , Figures 5-8 As shown, the mounting plate 250 is placed in the mounting groove 2101 of the keel 210. The mounting plate 250 has third mounting holes 2503 at both ends, and screws are passed through the third mounting holes 2503 to lock it into the mounting groove 2101. Then, the strip groove 2201 of the chair back bracket 220 is installed correspondingly to the mounting plate 250, and the cover plate 240 is placed on top. Screws are passed through the first mounting hole 2502 and the second mounting hole 2402 to lock it in place, thereby achieving the interconnection between the cover plate 240 and the chair back bracket 220, the mounting plate 250, and the keel 210.

[0053] According to some embodiments of this utility model, the chair back support 220 is slidably connected to one side of the keel 210 in the front-back direction, and the chair back support 220 and the keel 210 are abutted against each other in the front-back direction. This arrangement, combined with... Figure 3 As shown, the backrest support 220 and the keel 210 are attached to each other in the front-back direction. By making grooves in the keel 210 and the backrest support 220, the keel 210 and the backrest support 220 are slidably connected, so that the backrest frame 200 has no complicated parts in appearance.

[0054] The seat according to a second aspect of the present invention includes: a backrest frame 200.

[0055] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A chair back frame (200) characterized by, include: Keel (210); A chair back support (220) is slidably connected to the upper part of the keel (210) in the vertical direction; An elastic element (230) is vertically arranged in the up-down direction. One end of the elastic element (230) is fixedly connected to the backrest support (220), and the other end is fixedly connected to the keel (210). When the backrest support (220) is leaned against, the backrest support (220) slides down relative to the keel (210), and the elastic element (230) is stretched or compressed to adaptively adjust the height position of the backrest support (220). When the backrest support (220) is released from the leaning position, the elastic element (230) automatically resets and drives the backrest support (220) to reset to the initial position. It also includes: a cover plate (240), which is slidably mounted on the chair back support (220), the cover plate (240) passing through the chair back support (220) and fixedly connected to the keel (210), and an elastic member (230) disposed on the side of the cover plate (240) away from the chair back support (220), one end of the elastic member (230) being fixedly connected to the cover plate (240) and the other end being fixedly connected to the chair back support (220); The chair back support (220) is provided with a strip groove (2201) extending in the vertical direction. A strip through hole (2202) is formed at the bottom of the strip groove (2201). The cover plate (240) is slidably placed in the strip groove (2201) and the cover plate (240) passes through the strip through hole (2202) and is fixedly connected to the keel (210). The chair back support (220) includes: a chair back support frame (2203) and at least two support ribs (2204). The two ends of the at least two support ribs (2204) are respectively connected to the chair back support frame (2203) in the vertical direction. The at least two support ribs (2204) are provided with the strip groove (2201) and the strip through hole (2202).

2. The chair back frame (200) of claim 1, wherein, The dimension of the strip-shaped through hole (2202) in the vertical direction or the sliding stroke of the chair back support (220) is equal to the elastic deformation provided by the elastic element (230).

3. The chair back frame (200) of claim 1, wherein, The cover plate (240) is provided with a first connecting part (2401), and the chair back support (220) is provided with a second connecting part (2205) at a position higher than the upper part of the cover plate (240) or lower than the lower part of the cover plate (240). One end of the elastic member (230) is connected to the first connecting part (2401), and the other end is connected to the second connecting part (2205).

4. The seat back shell (200) of claim 1, wherein: Also includes: Mounting plate (250), which is fixed to the keel (210), and cover plate (240) passing through the chair back bracket (220) and fixedly connected to mounting plate (250).

5. The chair back frame (200) of claim 1, wherein, The keel (210) is provided with a mounting groove (2101) extending in the vertical direction. The mounting plate (250) is fixed in the mounting groove (2101). The mounting plate (250) is provided with a protrusion (2501) and a first mounting hole (2502) is formed on the protrusion (2501). The cover plate (240) is provided with a second mounting hole (2402) that corresponds to and cooperates with the first mounting hole (2502).

6. The seat back shell (200) of claim 1, wherein, The chair back support (220) is slidably connected to one side of the keel (210) in the front-back direction, and the chair back support (220) and the keel (210) are attached to each other in the front-back direction.

7. A seat, characterized by include: The chair back frame (200) according to any one of claims 1-6.

Images