Seat and sitting surface angle adjusting mechanism thereof

Abstract

The utility model relates to the field of seats, in particular to a seat and a sitting surface angle adjusting mechanism thereof. A sitting surface angle adjusting mechanism comprises a tray and a seat arranged on the tray. The tray comprises a fixed tray body fixedly connected to the upper end of the air cylinder, a front tray body with the rear end rotationally connected to the front end of the fixed tray body and a rear tray body connected to the rear end of the tray body. The rear disc body is used for being connected with the lower end of a chair back, swing frames are constructed on the left side and the right side of the tray, the rear ends of the swing frames are movably arranged on the fixed disc body or the rear disc body or the joint of the fixed disc body and the rear disc body through rear rotating shafts, and the front ends of the swing frames are hinged to the movable end of the front disc body through front rotating shafts; the rear rotating shaft and the front rotating shaft are connected through a tension spring, and a locking assembly used for positioning the front disc body is arranged on the fixed disc body. According to the scheme, the angle of the sitting surface of the seat can be adjusted, and the use requirements of different consumers are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of seat, especially to a seat and a seat surface angle adjusting mechanism. BACKGROUND

[0002] Office seats are usually only suitable for sitting, but as people spend more time at work, long sitting often brings a burden to people's health, and people usually want to change their sitting posture to reduce the burden on their bodies, so the demand for seats with high adjustment freedom is increasing. For example, a new multifunctional seat disclosed in Chinese patent CN112890486A has adjustable armrests and a backrest, which can allow people to sit upright, lie flat, lie on their side, etc. and adjust the angle freely. Currently, seat adjustment mainly involves adjusting the angle of the backrest, but the seat surface cannot be adjusted, and improvement is needed to adjust the hip support angle in the sitting or lying position. SUMMARY

[0003] To solve the above problems, the purpose of the utility model is to provide a seat surface angle adjusting mechanism, which can adjust the angle of the seat surface and can be used with the existing seat backrest angle adjusting function, so that the seat surface and the backrest surface present a more adaptive support angle in the sitting or lying position, meeting the needs of different consumers.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A seat surface angle adjusting mechanism includes a tray and a seat arranged on the tray. The tray includes a fixed disc body for fixed connection to the upper end of the air cylinder, a front disc body rotatably connected to the front end of the fixed disc body, and a rear disc body connected to the rear end of the disc body. The rear disc body is used to connect the lower end of the backrest, and the left and right sides of the tray are provided with swing frames. The rear end of the swing frame is movably arranged on the fixed disc body or the connecting part of the fixed disc body and the rear disc body through a rear pivot shaft, and the front end is hingedly connected to the movable end of the front disc body through a front pivot shaft. The rear pivot shaft and the front pivot shaft are connected by a tension spring. The fixed disc body is provided with a spring pin assembly for positioning the front disc body.

[0006] The utility model discloses adopt above -mentioned technical scheme, this technical scheme relates to a kind of ride surface angle adjusting mechanism, the fixed disc body of the ride surface angle adjusting mechanism is used to be fixedly connected on the upper end of cylinder, front disc body can be rotatably set in the front end of fixed disc body, it can be rotated and adjusted relative to fixed disc body and be positioned by spring pin assembly.And swing frame is built in the left and right sides of tray, the rear end of swing frame is movably set on fixed disc body or rear disc body or the connecting place of fixed disc body and rear disc body by rear pivot, and front end is hinged to the movable end of front disc body by front pivot.Spring pin assembly is in the unlocking state, under the action of tension spring, rear pivot and front pivot can be tightened, so that front disc body is turned up relative to fixed disc body, and the ride surface elevation angle is changed.Great, of course, in this state, user is seated on seat based on self gravity also can turn down front disc body, so that the ride surface elevation angle is changed.Small.After completing angle adjustment, it can be positioned by spring pin assembly relocking.

[0007] Based on the above scheme, the ride surface angle of the chair seat can be adjusted, which can be used in cooperation with the existing seat back angle adjustment function, so that the chair seat surface and the chair back surface present a more adaptive support angle in the riding state or the lying state, meeting the use needs of different consumers.

[0008] In a specific embodiment, a plurality of positioning shaft holes are provided on the front disc body, and the plurality of positioning shaft holes are arranged around the hinge end of the front side of the front disc body as an axis, and the spring pin assembly is clamped in any one of the positioning shaft holes to lock the front disc body. Preferably, a handle for pulling the spring pin assembly is formed on the side wall of the chair seat. When in use, pulling the handle can pull the spring pin assembly out of the positioning shaft hole, thereby achieving unlocking; under the condition of removing external force, the spring pin assembly is pressed to the positioning shaft hole under the elastic action, and when the positioning shaft hole is aligned with the spring pin assembly, the spring pin assembly is locked.

[0009] Preferably, the rear end of the front disc body is connected to the shaft rod on both sides.

[0010] In a further embodiment, the swing frames on the left and right sides of the tray are constructed as guide blocks arranged in the front-rear direction, and the guide blocks are constructed with tooth grooves at intervals; the chair seat is clamped on the guide blocks on both sides and can slide along the guide blocks in the front-rear direction, and the chair seat is constructed with a locking assembly for clamping into and out of the tooth grooves. In this scheme, the tray on both sides of the seat depth adjusting mechanism is provided with guide blocks, and the chair seat is clamped on the guide blocks on both sides and can slide along the guide blocks in the front-rear direction, so that the chair seat slides on the tray in the front-rear direction to adjust the seat depth. In cooperation with the angle adjustment of the ride surface, more ride angle requirements can be met.

[0011] As preferred, the locking assembly comprises a locking block movably arranged inside the seat, and a spring acting on the locking block; the inner end of the locking block is provided with a locking tooth for clamping the tooth groove, and the outer end of the locking block is provided with a knob extending out of the side wall of the seat; when the locking tooth is clamped into the tooth groove under the action of the spring, the seat is locked with the guide block; when external force is applied to the knob, the locking tooth is out of the tooth groove, and the seat can slide along the guide block. In the scheme, the spring in the locking assembly acts on the locking block, and when the external force is removed, the locking tooth is clamped into the tooth groove to lock the seat with the guide block, so that the position of the seat is fixed. When the external force is applied to the knob, the spring is compressed, and the locking tooth is out of the tooth groove, so that the seat depth can be adjusted.

[0012] A seat comprising the seat surface angle adjusting mechanism described above. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Fig. 4 is a schematic view of the assembly of the seat and the tray in a normal state.

[0014] Figure 2 Fig. 5 is a schematic view of the assembly of the seat and the tray in an adjusted state.

[0015] Figure 3 Fig. 6 is an exploded schematic view of the assembly of the seat and the tray.

[0016] Figure 4 Fig. 7 is a schematic view of the internal structure of the tray in a normal state.

[0017] Figure 5 Fig. 8 is a schematic view of the internal structure of the tray in an adjusted state.

[0018] Figure 6 Fig. 9 is a schematic view of the sliding adjustment of the tray. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0020] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0021] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0022] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between 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.

[0023] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and inclined upward of the first feature above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical and inclined downward of the first feature below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. Example 1

[0024] As Figures 1-6As shown, the embodiment relates to a seat surface angle adjusting mechanism, which comprises a tray 1 and a seat 2 arranged on the tray 1. The tray 1 comprises a fixed disc body 11 for being fixed on the upper end of a cylinder, a front disc body 12 rotatably connected to the front end of the fixed disc body 11, and a rear disc body 13 connected to the rear end of the disc body. The rear end of the front disc body 12 is connected through a shaft 14 on both sides, and the rear disc body 13 is used for connecting the lower end of the seat back. Swing frames 15 are arranged on both sides of the tray 1. The rear end of the swing frame 15 is movably arranged on the fixed disc body 11 or the rear disc body 13 or the connection between the fixed disc body 11 and the rear disc body 13 through a rear rotating shaft 16, and the front end is hingedly connected to the movable end of the front disc body 12 through a front rotating shaft 17. The rear rotating shaft 16 and the front rotating shaft 17 are connected through a tension spring 18. The fixed disc body 11 is provided with a spring pin assembly 4 for positioning the front disc body 12.

[0025] The fixed disc body 11 of the seat surface angle adjusting mechanism is used for being fixed on the upper end of a cylinder, and the front disc body 12 can be rotatably arranged on the front end of the fixed disc body 11, can be rotatably adjusted relative to the fixed disc body 11, and is positioned by the spring pin assembly 4. Swing frames 15 are arranged on both sides of the tray 1. The rear end of the swing frame 15 is movably arranged on the fixed disc body 11 or the rear disc body 13 or the connection between the fixed disc body 11 and the rear disc body 13 through a rear rotating shaft 16, and the front end is hingedly connected to the movable end of the front disc body 12 through a front rotating shaft 17. When the spring pin assembly 4 is in an unlocked state, the rear rotating shaft 16 and the front rotating shaft 17 can be pulled tight under the action of the tension spring 18, so that the front disc body 12 is flipped upward relative to the fixed disc body 11, and the seat surface angle is increased. Of course, in this state, the user sitting on the seat can also flip the front disc body 12 downward based on the gravity of the user, so as to reduce the seat surface angle. After the angle adjustment is completed, the spring pin assembly 4 is re-locked to position.

[0026] Based on the above scheme, the seat surface angle of the seat 2 can be adjusted, which can be used in cooperation with the seat back angle adjusting function of the existing seat, so that the seat surface and the seat back surface present a more adaptive support angle in the sitting state or the lying state, and the use requirements of different consumers are met.

[0027] In a specific embodiment, a plurality of positioning shaft holes 121 are arranged on the front disc body 12, and the plurality of positioning shaft holes 121 are arranged around the hinge end of the front side of the front disc body 12 as the shaft center. The spring pin assembly 4 is clamped in any one of the positioning shaft holes 121, so as to lock the front disc body 12. Preferably, a handle for pulling the spring pin assembly is arranged on the side wall of the seat 2. In use, the handle can be pulled to pull the spring pin assembly out of the positioning shaft hole 121, so as to realize unlocking. Under the state of removing external force, the spring pin assembly is pressed to the positioning shaft hole 121 under the elastic action, and when the positioning shaft hole 121 is aligned with the spring pin assembly, the spring pin assembly is locked.

[0028] In the further embodiment as shown in Figures 4-6 In the further embodiment as shown in In the further embodiment as shown in, the swing frames 15 on the left and right sides of the tray 1 are constructed as guide blocks 151 arranged in the front-back direction, and the guide blocks 151 are constructed with tooth grooves 152 at intervals. The seat 2 is clamped on the guide blocks 151 on the left and right sides and can slide along the guide blocks 151 in the front-back direction. The seat 2 is constructed with a locking assembly 3 inside for clamping into and out of the tooth grooves 152. In this scheme, the tray 1 on the left and right sides of the seat depth adjustment mechanism is provided with guide blocks 151, and the seat 2 is clamped on the guide blocks 151 on the left and right sides and can slide along the guide blocks 151 in the front-back direction. Thus, the seat 2 slides on the tray 1 in the front-back direction to adjust the seat depth. In combination with the angle adjustment of the seating surface, more seating angle requirements can be met. The locking assembly 3 includes a locking block 31 movably arranged inside the seat 2, and a spring acting on the locking block 31. The inner end of the locking block 31 is constructed with a locking tooth 32 for clamping the tooth groove 152, and the outer end of the locking block 31 is constructed with a knob 33 extending out of the side wall of the seat 2. When the locking block 31 is only under the action of the spring, the locking tooth 32 clamps into the tooth groove 152 to position and lock the seat 2 with the guide block 151. When external force is applied to the knob 33, the locking tooth 32 exits the tooth groove 152, and the seat 2 can slide along the guide block 151 in the front-back direction. In this scheme, the spring in the locking assembly 3 acts on the locking block 31, and when the external force is removed, the locking tooth 32 clamps into the tooth groove 152 to position and lock the seat 2 with the guide block 151, so that the position of the seat 2 is fixed. When external force is applied to the knob 33, the spring is compressed, and the locking tooth 32 exits the tooth groove 152, so that the seat depth can be adjusted. Embodiment 2

[0029] A seat, comprising the seating surface angle adjustment mechanism described in embodiment 1.

[0030] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application without departing from the principles and purposes of the present application.

Claims

1. A ride surface angle adjustment mechanism comprising a tray (1) and a seat (2) provided on the tray (1); characterized in that: The tray (1) comprises a fixed disc body (11) for being fixed on the upper end of the air cylinder, a front disc body (12) rotatably connected to the front end of the fixed disc body (11), and a rear disc body (13) connected to the rear end of the disc body; the rear disc body (13) is used for connecting the lower end of the chair back, swing frames (15) are arranged on the left and right sides of the tray (1), the rear end of the swing frame (15) is movably arranged on the fixed disc body (11) or the rear disc body (13) or the connecting part of the fixed disc body (11) and the rear disc body (13) through a rear rotating shaft (16), and the front end is hingedly connected to the movable end of the front disc body (12) through a front rotating shaft (17); the rear rotating shaft (16) and the front rotating shaft (17) are connected through a tension spring (18), and the fixed disc body (11) is provided with a spring pin assembly (4) for positioning the front disc body (12).

2. A seat surface angle adjustment mechanism according to claim 1, characterized in that: A plurality of positioning shaft holes (121) are arranged on the front disc body (12), the plurality of positioning shaft holes (121) are arranged around the hinge end of the front side of the front disc body (12) as an axis, and the spring pin assembly (4) is clamped in any one of the positioning shaft holes (121) to lock the front disc body (12).

3. A seat surface angle adjustment mechanism according to claim 2, characterized in that: A handle for pulling the spring pin assembly is arranged on the side wall of the seat (2).

4. A seat surface angle adjustment mechanism according to claim 1, characterized by: The rear end of the front disc body (12) is connected through a shaft rod (14).

5. A seating surface angle adjustment mechanism according to any one of claims 1 to 4, wherein: The swing frames (15) on the left and right sides of the tray (1) are arranged as guide blocks (151) arranged in the front-rear direction, and tooth grooves (152) are arranged on the guide blocks (151) at intervals; the seat (2) is clamped on the guide blocks (151) on the left and right sides and can slide forward and backward along the guide blocks (151), and a locking assembly (3) for clamping into and out of the tooth grooves (152) is arranged in the seat (2).

6. A seat surface angle adjustment mechanism according to claim 5, wherein: The locking assembly (3) comprises a locking block (31) movably arranged in the seat (2) and a spring acting on the locking block (31); a locking tooth (32) for clamping the tooth groove (152) is arranged at the inner end of the locking block (31), and a knob (33) protruding from the side wall of the seat (2) is arranged at the outer end of the locking block (31); when the locking block (31) is only under the action of the spring, the locking tooth (32) is clamped into the tooth groove (152) to position and lock the seat (2) and the guide block (151); when an external force acts on the knob (33), the locking tooth (32) exits the tooth groove (152), and the seat (2) can slide forward and backward along the guide block (151).

7. A seat, characterized by: The seat surface angle adjusting mechanism comprises the seat surface angle adjusting mechanism according to any one of claims 1-6.

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