WO2018036059A1 - Chair - Google Patents

Abstract

A chair (100) comprises a support base (110), a backrest (120), a connection frame (130), and a seat (140) for a user to seat thereon. The backrest (120) is disposed via the connection frame (130) on the support base (110). The chair (110) is characterized in that: the backrest (120) comprises a back-contact section (121) for supporting a back portion of a user, a waist-contact section (122) for supporting a waist portion of a user, and a transition section connecting the back-contact section (121) and the waist-contact section (122), and is rotatably connected at a predefined position thereof to the connection frame (130) via a rotational structure (131). When an external force is applied to the backrest (120), the backrest (120) can rotate, in clockwise direction, from a preconfigured state, and around the rotational structure (131). After the external force disappears, the beck rest (120) returns to the preconfigured state.

Description

 Chair technical field

 [0001] The present invention relates to a chair, and more particularly to a chair for use in a work or learning environment.

 Background technique

 [0002] Chairs are essential furniture for people's daily work and life, according to materials, solid wood chairs, wrought iron chairs, plastic chairs, fabric chairs, leather chairs and so on. According to the occasion, office chairs, dining chairs, bar chairs, leisure chairs, etc.

 [0003] Existing chairs for work and chairs for learning have a backrest that is substantially fixed and inactive.

 In this way, the user sits between the long squats, and the ass tends to move forward a distance. If the body rests on the backrest of the chair, the user's waist will leave a large gap, and the lumbar spine is in a suspended state. However, the lumbar vertebrae are in a state of being suspended, which is very unfavorable to the health of the lumbar spine of the human body. Because of the long sputum, it is prone to disc herniation or even shedding, which affects human health.

 Problem solution

 Technical solution

 According to the deficiencies in the prior art, the technical problem solved by the present invention is to provide a chair for healthy riding.

 [0005] In order to solve the above technical problem, the technical solution adopted by the present invention is: a chair, comprising a support base, a backrest, a connecting frame and a seat plate for the user to ride, wherein the backrest is supported by the support through the connection a seat, characterized in that: the backrest includes a back contact section for supporting the back, a waist contact section for supporting the waist, and a transition section connecting the back contact section and the waist contact section, wherein the transition section is pre-formed The position is rotatably connected to the connecting frame by a rotating structure; under the action of an external force, the backrest can rotate from the preset state along the rotating structure; after the external force disappears, the backrest returns to the preset state .

[0006] Further, in the technical solution, the seat plate is disposed on the connecting frame, and the seat plate includes a substantially horizontal seat portion for the user to ride and a slope portion inclined downward along the user's riding direction. The seat The points are located in the rear of the user's riding direction, and the sloped portion is located in front of the user's riding direction.

 [0007] Further, in the technical solution, the seat plate is disposed on the support base, and the seat plate includes a substantially horizontal seat portion for the user to ride and a slope portion inclined downward along the user's ride direction. The occupant portion is located rearward of the user's riding direction, and the sloping portion is located in front of the user's riding direction.

 [0008] Preferably, the acute angle formed between the slope portion and the horizontal plane in the technical solution ranges between more than 6° and less than 25°.

 [0009] Preferably, the acute angle in the technical solution ranges from 7° to 15°.

[0010] Preferably, the acute angle in the technical solution is 12° or 13° or 14° or 15°.

 [0011] Further, in the technical solution, the occupant portion is a half to two-thirds portion of the seat plate; and the remaining portion is the slope portion.

[0012] Further, in the technical solution, the occupant portion substantially occupies a ratio of half of the seat plate; or the occupant portion substantially occupies a ratio of two-thirds of the seat plate.

[0013] Further, in the technical solution, the support base further has a lifting adjustment mechanism, and the seat plate and the connecting frame are both disposed on the lifting and adjusting mechanism, and the lifting and adjusting mechanism is used for adjusting the seat plate and The height of the backrest from the ground.

 [0014] Further, in the technical solution, the lifting and lowering adjustment mechanism is a lifting mechanism of a pneumatic lifting column or a screw lifting mechanism or an adjusting member fastening lifting rod or a lifting mechanism that cooperates with the porous structure body.

 [0015] Further, the technical solution further includes an armrest, and the armrests are located at two sides of the seat plate.

 [0016] Further, in the technical solution, the rotating structure between the backrest and the connecting frame is further provided with a reset mechanism

The reset mechanism causes the backrest to remain in the predetermined state without being subjected to an external force.

[0017] Further, the reset mechanism in the technical solution includes a torsion spring, the torsion spring maintains the backrest at a preset position, and the rotating structure further has a damping structure, wherein the damping structure makes the The backrest is slowly rotated and reset by the reel around the rotating structure.

[0018] Further, at least the transition section of the backrest has a width greater than a width of the interference section in the connecting frame, and the interference between the transition section and the interference section makes the backrest unaffected The external force is kept at a preset state.

[0019] Further, in the technical solution, the axis of the rotating structure is away from the seat plate by a height of 320 MM - 3 80 MM. [0020] Further, in the technical solution, the backrest and the seat plate are provided with a cushion.

 [0021] Further, in the technical solution, the back surface of the backrest that is in contact with the back and the waist of the human body is shaped like a normal physiological curve of the adult body.

 [0022] Further, in the technical solution, the center of gravity of the backrest is located below the rotating structure, and the gravity of the backrest causes the backrest to remain in the preset state without being affected by an external force.

[0023] Further, in the technical solution, the support base is provided with a roller adapted to slide on the ground.

 Advantageous effects of the invention

 Beneficial effect

 [0024] The main beneficial effects of the present invention are: Since the connection transition section between the back contact section and the waist contact section is rotatably connected to the connecting frame by a rotating structure, the backrest can be wound under the action of an external force The rotating structure rotates from the preset state, so that the user's back rests on the backrest, and the backrest rotates around the axis of the rotating structure, and the waist contact section can be supported to the waist of the user. , to prevent the lumbar force.

 [0025] Other benefits of the invention will be further illustrated in the specific embodiments.

 Brief description of the drawing

 DRAWINGS

 1 is a perspective view showing the structure of a preferred embodiment of a chair;

2 is a schematic view showing the shape of the backrest of FIG. 1;

3 is a schematic view showing the shape of the seat plate of FIG. 1;

Figure 4 is a front elevational view of the chair of Figure 1;

Figure 5 is a right side view of the chair of Figure 1;

Figure 6 is a front elevational view of the rotating structure;

Figure 7 is a cross-sectional view taken along the line A-A of the rotating structure;

8 is an exploded view of FIG. 7.

 [0034] FIG. 9 is a schematic view of the backrest rotated by an angle under an external force.

Embodiments of the invention [0035] In order to make the technical problems, technical solutions, and advantageous effects to be solved by the present invention more clearly, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. It is understood that the specific embodiments described in this section are merely illustrative of the invention and are not intended to limit the invention.

 [0036] Specific Embodiment 1

 [0037] As shown in FIG. 1, the preferred embodiment discloses a chair 100 that includes a support base 110, a backrest 120, a connector bracket 130, and a seat pan 140 for the user to ride. In this embodiment, the connecting frame 130 is disposed on the support base 110, and the backrest 120 and the seat plate 140 are disposed on the support base 110 through the connecting bracket 130. As shown in FIG. 2, the backrest 120 includes a back contact section 121 for supporting the back, a waist contact section 122 for supporting the waist, and a transition section 123 connecting the back contact section 121 and the waist contact section 122, in the transition section 123. The preset position is rotatably coupled to the connecting frame 130 by the rotating structure 131. As shown in Fig. 9, under the action of external force, the backrest 120 can rotate from the preset state (Fig. 2) around the rotating structure 131; after the external force disappears, the backrest 120 returns to the preset state. The preset state of the backrest 120 refers to a state in which the human body is in a comfortable position on the backrest 120 after being seated normally. For example, the backrest 120 is at an angle of 3° or 6° with the vertical plane; wherein the more comfortable position state preferably forms an angle between the backrest 120 and the vertical plane in the range of 3° - 10°. In other embodiments, the seat plate 140 may also be disposed directly on the support base 110 without the connection bracket 130.

 [0038] In the prior art, the seat surface for the person to ride is basically parallel to the horizontal plane, and the chair with the seat surface parallel to the horizontal plane is easy to press the artery with the thigh and the chair surface close to the body, causing blood. Not circulated, sedentary affects the health of the user. Therefore, as shown in FIG. 3, the seat plate 140 includes a substantially horizontal seat portion 141 for the user to ride and a slope portion 142 which is inclined downward in the direction of the user's ride, the seat portion 141 being located rearward of the user's riding direction, the slope portion 142 is located in front of the user's direction of travel. The acute angle formed between the slope portion 142 and the horizontal plane ranges between greater than 6° and less than 25°. The seat portion 141 and the slope portion 142 are actually a rough outline of the shape. For example, according to actual needs, the seat portion 141 can be set to a slightly concave plane for contacting the user's buttocks. The mode is also within the range of the basic level described in the present invention; the slope portion 142 is also formed as a small curved surface, and the acute angle formed between the slope portion 14 2 and the horizontal plane is the slope portion 142 high point and bottom. The angle formed between the line of points and the horizontal plane. Wherein, the user's riding direction refers to the direction in which the user sits on the chair 100, and the front and rear refers to the direction in which the user rides, and the user faces the front and the back is the rear.

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806Zll/9T0ZN3/X3d 6S09C0/8T0Z OAV b&rsv_t=d2a0t3TTmfIN ^< 3⁄42FXeGNuzd ^< 3⁄42BUESv ^< 3⁄42BfyE81RFA2jBOD ^< 3⁄42FclZ9OE 98wx08VlqsRW0u7ypaYlLKkPk2&rqlang=cn&rsv_enter=0&inputT=3911&rsv_n=2 The lifting mechanism that cooperates with the porous structure is: The pin is matched with the structure with multi-position holes, by selecting the pin and the position hole The connection relationship to control the rise or fall. The lifting mechanism of the adjusting member fastening the lifting rod is composed of a sleeve, a connecting member that is movably inserted into the sleeve for lifting, and a fastener. Wherein, the sleeve is provided with a notch, and the fastener is used for locking the notch to realize the sleeve gripping the connecting member and preventing the connecting member from moving.

 [0043] As shown in FIG. 4, an armrest 150 is further included. The armrest 150 is disposed on the connecting frame 130, and the armrest 150 is located at two sides of the seat plate 140. The armrest 150, the seat plate 140 and the backrest 120 are all disposed on the connecting frame 130, and the lifting and lowering mechanism 111 can integrally adjust the height of the connecting frame 130 from the ground. As shown in Fig. 5, the support base 110 is provided with a roller 113 adapted to slide on the ground.

 As shown in FIG. 5 and FIG. 6, the rotating structure 131 between the backrest 120 and the connecting frame 130 is further provided with a reset mechanism 1 311. The reset mechanism 1311 keeps the backrest 120 in a preset state without being subjected to an external force. The width of at least the transition section 123 in the backrest 120 is greater than the width of the interference section 132 in the bracket 131, and the interference limit of the transition section 123 and the interference section 132 causes the backrest 120 to remain in a preset state without being subjected to an external force.

 As shown in FIG. 7 and FIG. 8, in the present embodiment, the rotating structure 131 adopts an articulated embodiment. The rotating structure 1 31 includes one end of the connecting bracket 130 with a through hole 133, a fixing member 1313 connected to the backrest 120, and a rotating shaft 1312. The rotating shaft 1312 is adapted to be inserted into the through hole 133 and then connected in the fixing member 1313, and the rotating shaft 1312 is adapted to It is free to rotate on the fixing member 1313. The reset mechanism 1311 is a torsion spring, and the torsion spring is sleeved on the rotating shaft 1312. One end of the torsion spring is fixed on the connecting frame 130, and the other end is fixed on the fixing member 1313. The torsion spring holds the backrest 120 in a preset position. A damping structure 1314 is also provided in the rotating structure 131, and the damping structure 1314 causes the backrest 120 to be slowly rotated and reset in the reset winding structure 131. The damping structure 1314 is arranged such that after the backrest 120 is rotated to a certain angle, the contact of the user's back with the backrest 120 can be in a relatively comfortable state due to the damping effect of the damping structure 1314.

[0046] According to the difference in the average height of the human body in each region, as a preferred embodiment, the height of the axis of the rotating structure 131 from the seat plate 140 is 320 MM to 380 MM. As shown in FIG. 2 and FIG. 4, in the embodiment, the height of the axis of the rotating structure 131 from the seat plate 140 is 150 mm; that is, from the waist contact portion 122 upward, the backrest 120 and the connection The position between the frames 130 connected by the rotating structure 131 is approximately three-fifths of the position of the backrest 120. The surface of the backrest 120 that is in contact with the back and waist of the human body is shaped like a normal physiological curve of the adult body. The center of gravity of the backrest 120 is located below the rotating structure 131, and the weight of the backrest 120 causes the backrest 120 to remain in a preset state without being subjected to external force. In other embodiments, a cushion that is comfortable for a person can be placed on the backrest 120 and the seat panel 140.

 In this embodiment, since the connection transition section 123 between the back contact section 121 and the waist contact section 122 is rotatably connected to the connecting frame 130 through the rotating structure 131, the backrest 120 can be wound around the rotating structure 131 by an external force. The needle rotates from the preset state, so that the user's back rests on the backrest 120. Through the rotation of the backrest 120 about the rotating structure 131, the waist contact section 122 can also be supported to the user's waist to prevent the lumbar spine from being stressed. In addition, since the backrest 120 is rotated by the force of the needle, the lever principle is applied. Therefore, when the rotating mechanism 131 is provided with the reset mechanism 1311吋, the human body only needs a small force to rotate the backrest 120, so that the human body makes The rotation of the backrest 120 becomes very natural and does not feel a large reaction force.

 In other embodiments, the pedestal portion 141 can also be a ratio that is substantially two-thirds of the seat plate 140; the slope portion 142 occupies a substantially one-third of the seat plate 140.

 The present invention has been described with reference to the specific embodiments of the present invention. It is understood that the above embodiments are only used to help the understanding of the present invention and are not to be construed as limiting the invention. Any minor modifications or equivalent substitutions made to the structure or construction of the present invention are intended to be included within the scope of the present invention.

Claims

Claim  A chair comprising a support base, a backrest, a connecting frame and a seat plate for a user to ride, wherein the backrest is mounted on the support base through the connection, wherein: the backrest includes a back contact for supporting the back a segment, a waist contact portion for supporting the waist, and a transition portion connecting the back contact portion and the waist contact portion, wherein the preset position in the transition portion is rotatably coupled to the connecting frame by a rotating structure; The backrest is rotatable from the preset state along the rotating structure, and the backrest returns to the preset state after the external force disappears.  A chair according to claim 1, wherein: said seat plate is provided on said connecting frame, said seat plate comprising a substantially horizontal seat portion for the user to ride and a slope inclined downward in the direction of the user's ride. In the face portion, the seat portion is located rearward of the user's riding direction, and the slope portion is located in front of the user's riding direction.  A chair according to claim 1, wherein: said seat plate is provided on said support base, said seat plate comprising a substantially horizontal seat portion for the user to ride and a slope inclined downward in the direction of the user's ride. In the face portion, the seat portion is located rearward of the user's riding direction, and the slope portion is located in front of the user's riding direction.  A chair according to claim 2 or 3, wherein: the acute angle formed between the slope portion and the horizontal plane ranges between more than 6° and less than 25°.  A chair according to claim 4, wherein: said acute angle ranges from 7° to 15°. A chair according to claim 5, wherein: said acute angle is 12 or 13 or 14 or 15. .  A chair according to claim 2 or 3, wherein: said seat portion is a half to two thirds of said seat plate; and the remaining portion is said slope portion.  The chair according to claim 7, wherein: said occupant portion substantially occupies a ratio of one half of said seat plate; or said occupant portion substantially occupies two-thirds of said seat plate [Claim 9] The chair according to claim 1, wherein: the support base further has a lifting adjustment mechanism, and the seat plate and the connecting frame are both disposed on the lifting adjustment mechanism, and the lifting and lowering adjustment The joint mechanism is used to adjust the height of the seat plate and the backrest from the ground.  [Claim 10] The chair according to claim 9, wherein: the lifting and lowering adjustment mechanism is a pneumatic lifting column or a screw lifting mechanism or an adjusting member fastening the lifting rod of the lifting mechanism or the pin and the porous structure Lifting mechanism. [Claim 11] The chair according to claim 1, further comprising: an armrest, the armrest being located on both sides of the seat plate.  [Claim 12] The chair according to claim 1, wherein: the rotating structure between the backrest and the connecting frame is further provided with a reset mechanism, and the reset mechanism keeps the backrest from being externally stressed In the preset state.  [Claim 13] The chair according to claim 13, wherein: the reset mechanism includes a torsion spring, the torsion spring holds the backrest at a preset position, and the rotating structure is further provided with a damping structure The damping structure causes the backrest to be slowly rotated and reset by the reset winding around the rotating structure.  [Claim 14] The chair according to claim 1, wherein: at least the transition section of the backrest has a width greater than a width of an interference section in the connecting frame, the transition section and the interference section The interference causes the backrest to remain in a preset state without external force.  [Claim 15] The chair according to claim 1, wherein: the axis of the rotating structure is from 320 mm to 380 mm from the seat plate.  [Claim 16] The chair according to claim 1, wherein: the backrest and the seat plate are each provided with a cushion.  [Claim 17] The chair according to claim 1, wherein the back surface is in contact with the back of the human body and the waist, and the shape of the normal physiological curve of the adult body is set. [Claim 18] The chair according to claim 1 or 17, wherein: a center of gravity of the backrest is located below the rotating structure, and gravity of the backrest causes the backrest to remain in an external force The preset state. [Claim 19] The chair according to claim 1, wherein: the support base is provided with a roller adapted to slide on the ground.