Weighing seat

Abstract

The utility model provides a weighing seat. The weighing seat comprises a seat body, a base plate fixed at the bottom of the seat body, an air rod fixed on one side, far away from the seat body, of the base plate, and a seat leg assembly mounted at one end, far away from the base plate, of the air rod, the chair leg assembly comprises a fixed part, at least three supporting arms, chair wheels and at least one weighing sensor; the fixed part is fixed on the air rod in a sleeving manner; the supporting arms are formed by outwards extending the periphery of the fixed part and are arranged at intervals; the chair wheels are fixedly mounted at one ends, far away from the fixed part, of the supporting arms; the two opposite sides of the weighing sensor are fixed to the corresponding supporting arms and the corresponding chair wheels respectively. The weighing seat disclosed by the utility model is not only simple to assemble, but also simple in maintenance process.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technology field especially applies to a kind of weighing chair for learning, office and the like. BACKGROUND

[0002] The chair is a device for people to sit on, which mainly includes a seat body, a bottom plate fixed to the seat body, an extension rod with a retracting function fixed to the bottom plate, and a chair leg fixed to the other end of the extension rod.

[0003] However, as people's living standards improve, people pay more and more attention to their own health, and weight is the focus of most people. In order to weigh people on a chair, the prior art chair fixes a weighing sensor inside the bottom plate to achieve the weighing function of the human body.

[0004] Although the combination of the weighing sensor and the chair can weigh the human body, the weighing sensor is fixed inside the bottom plate, so the weighing sensor needs to be installed in the bottom plate before assembly, and then the entire bottom plate is assembled, which makes the assembly more troublesome. In addition, the bottom plate needs to be disassembled to replace the weighing sensor during maintenance, which is also a troublesome process. SUMMARY

[0005] In view of the above shortcomings of the prior art, the utility model provides a weighing chair to solve the problem of the prior art that the weighing sensor is fixed inside the bottom plate, making the assembly and maintenance process more troublesome.

[0006] The utility model provides a kind of weighing chair, it includes seat body, the bottom plate of fixed to the bottom of the seat body, the gas rod of fixed to the side of the bottom plate away from the seat body and the chair leg component of installed to the end of the gas rod away from the bottom plate;

[0007] The chair leg component includes the fixed part of fixed to the gas rod, at least three mutually spaced support arms formed by the periphery of the fixed part extending outward, a chair wheel fixedly installed at the end of each support arm away from the fixed part, and at least one weighing sensor, the opposite sides of the weighing sensor are fixed to the corresponding support arm and chair wheel.

[0008] Preferably, each weighing sensor includes a deformation block fixed to the support arm, a deformation hole formed through the deformation block, and at least one strain sensing element attached and fixed to the deformation block; the area of the deformation block where the deformation hole is opened is defined as a deformation zone, the strain sensing element is fixed to the deformation zone, and the chair wheel abuts against the side of the deformation block away from the support arm.

[0009] Preferably, the chair wheel comprises a wheel shell, a mounting column mounted on the top of the wheel shell, and a rolling wheel mounted on the bottom of the wheel shell; the deformation block has a fixed surface close to one side of the support arm and a stress surface away from the other side of the support arm; the fixed surface is abutted and fixed to the support arm, and the penetration direction of the deformation hole is parallel to the fixed surface; the mounting column extends to the fixed surface through the deformation block from the stress surface, and forms a fixed connection with the deformation block; and the top of the wheel shell is abutted to the stress surface.

[0010] Preferably, the chair foot assembly further comprises a circuit board fixed to the fixed part and electrically connected to the load cell; the strain sensing element is electrically connected to the circuit board through an electronic wire.

[0011] Preferably, the deformation block is penetrated to the support arm from the fixed surface through a fastener and forms a fixed connection with the support arm; and the chair wheel and the fastener are respectively located on opposite sides in the horizontal direction of the deformation hole.

[0012] Preferably, the support arm is provided with an extension formed by protruding extension on the side corresponding to the fastener; the fastener is penetrated to the extension from the fixed surface and forms a fixed connection with the extension; and the side of the extension away from the support arm is arranged in abutment with the fixed surface.

[0013] Preferably, the number of load cells is the same as the number of support arms; and the opposite sides of each load cell are respectively fixed to the corresponding support arm and chair wheel.

[0014] Preferably, the support arm is gradually inclined downward from one end close to the fixed part to the other end; and the one end of the support arm close to the fixed part is closer to the chair seat body relative to the other end.

[0015] Preferably, the fixed part is hollow; the fixed part is provided with a sleeve protruding and extending around the inner periphery of the fixed part away from the air rod; and the air rod is inserted into the fixed part and extends into the sleeve.

[0016] Preferably, the outer periphery of the fixed part is provided with a first bending part bent and extended; the opposite sides of each support arm are respectively provided with a second bending part bent and extended and connected to the first bending part; and the first bending part and the second bending part respectively extend away from the chair seat body.

[0017] Compared with the prior art, the weighing seat in this utility model designs the weighing sensor between the corresponding support arm and the chair wheel. This allows for direct external assembly during assembly without the need to assemble a single component, making assembly simpler. During maintenance, the weighing sensor can be replaced directly without disassembling a component, making the maintenance process simpler. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 A three-dimensional structural diagram of the weighing seat provided for an embodiment of this utility model;

[0020] Figure 2 This is an exploded view of a partial structure of the weighing seat provided in an embodiment of the present utility model;

[0021] Figure 3 A partially exploded structural diagram of the chair leg assembly in the weighing chair provided in an embodiment of this utility model from a first-view perspective;

[0022] Figure 4 for Figure 3 A schematic diagram of the structure of the weighing sensor;

[0023] Figure 5 A partial exploded view of the chair leg assembly in the weighing chair provided in an embodiment of this utility model;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure of the weighing sensor;

[0025] Figure 7 for Figure 3 Sectional view of line AA in the middle;

[0026] Figure 8 for Figure 7 Enlarged view of the structure of section B.

[0027] Wherein, 100, weighing seat; 1, chair seat body; 11, cushion; 12, backrest; 13, armrest; 2, bottom plate; 3, gas rod; 4, chair leg assembly; 41, fixed part; 411, first bending part; 412, sleeve; 42, circuit board; 43, support arm; 431, second bending part; 432, extension part; 44, weighing sensor; 441, deformation block; 4411, fixed surface; 4412, stress surface; 4413, fastener; 442, deformation hole; 443, strain sensing element; 4431, electronic wire; 45, chair wheel; 451, wheel shell; 452, mounting column; 453, roller. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the present application will be described with reference to the drawings in which is shown by way of illustration the application in accordance with embodiments described herein in which:

[0029] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to one or more feature of one or more embodiments.

[0030] It should be noted that the "upper", "lower", "left", "right" and the like mentioned in the embodiments of the present application are described with reference to the placement state in the drawings, and should not be interpreted as the limiting embodiments of the present application. In addition, it should also be understood that in the text, when referring to an element "above" or "below" another element, it is possible that the element is directly "above" or "below" the other element, or the element is "above" or "below" the other element through an intermediate element.

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] The utility model embodiment provides a kind of weighing seat 100, combine Figures 1 to 8 As shown in the figure, it includes chair seat body 1, the bottom plate 2 fixed in the bottom of chair seat body 1, the gas rod 3 fixed to the side of bottom plate 2 away from chair seat body 1 and the chair leg assembly 4 installed in the end of gas rod 3 away from bottom plate 2.

[0033] Among them, chair seat body 1 includes fixed to the side of bottom plate 2 away from gas rod 3 cushion 11, be arranged in one side of cushion 11 and form rotatable connection with cushion 11 chair back 12 and fixed to the opposite sides of cushion 11 armrest 13, armrest 13 is located in the opposite sides of chair back 12. This design can make the passenger more comfortable. Of course, according to actual demand, chair seat body 1 can only contain cushion 11, or cushion 11 plus chair back 12, or cushion 11 plus armrest 13.

[0034] In the embodiment, gas rod 3 is air pressure rod. Of course, according to actual demand, gas rod 3 can also be designed into hydraulic rod, screw rod, electric screw rod and telescopic rod cooperation elastic column limit (such as umbrella rod) structure.

[0035] Chair leg assembly 4 includes fixed part 41 fixed to gas rod 3, at least three mutually spaced support arms 43 formed by the periphery of fixed part 41 outward extension, chair wheel 45 fixedly installed in the end of each support arm 43 away from fixed part 41 and at least one weighing sensor 44, the opposite sides of weighing sensor 44 are fixed to corresponding support arm 43 and chair wheel 45 respectively. Of course, if weighing sensor 44 is not this type of design, weighing sensor 44 is fixed between corresponding support arm 43 and chair wheel 45.

[0036] In the embodiment, the number of weighing sensor 44 is same as the number of support arm 43, and the opposite sides of each weighing sensor 44 are fixed to corresponding support arm 43 and chair wheel 45 respectively. That is, the number of chair wheel 45 is also same as the number of weighing sensor 44 and one-to-one correspondence, and the side of each chair wheel 45 close to support arm 43 abuts on corresponding weighing sensor 44, and the side of each support arm 43 close to chair wheel 45 abuts on corresponding weighing sensor 44. This design can make weight distribution balanced and concentrated in the end of support arm 43 during weighing, so as to improve the precision of weighing. Of course, according to actual demand, the number of weighing sensor 44 can also be different from the number of support arm 43.

[0037] In the embodiment, the chair leg assembly 4 further comprises a circuit board 42 fixed to the fixed part 41 and electrically connected with the load sensor 44. Specifically, the circuit board 42 is fixed to the side of the fixed part 41 away from the air cylinder 3. This design can facilitate signal transmission of the load sensor 44. Of course, the signal of the load sensor 44 can be transmitted through a wireless network without the design of the circuit board 42.

[0038] The fixed part 41 is hollow, and the outer periphery of the fixed part 41 is provided with a first bent part 411 extending by bending. The opposite sides of each support arm 43 are respectively provided with a second bent part 431 extending by bending and respectively connected with the first bent part 411. The first bent part 411 and the second bent part 431 respectively extend away from the chair body 1. This design can avoid the rider from kicking the circuit board 42 or the load sensor 44 through the first bent part 411 and the second bent part 431, so as to achieve the protection effect.

[0039] The side of the fixed part 41 away from the air cylinder 3 is provided with a sleeve 412 extending outward and surrounding the inner periphery of the fixed part 41. The air cylinder 3 is inserted into the fixed part 41 and extends into the sleeve 412. This design can facilitate the sleeving and fixing of the fixed part 41 and the air cylinder 3. In the embodiment, the circuit board 42 is annular and sleeved on the outer periphery of the sleeve 412. This design of the sleeve 412 can better protect the circuit board 42 in cooperation with the first bent part 411.

[0040] In the embodiment, the support arm 43 comprises five equal-interval arranged support arms. The equal-interval arrangement can make the weight distribution balanced, so as to improve the accuracy of weighing. Of course, the support arm 43 can also be designed as four, six, seven, etc. according to actual needs.

[0041] The support arm 43 is gradually inclined downward from one end close to the fixed part 41 to the other end. The one end of the support arm 43 close to the fixed part 41 is closer to the chair body 1 than the other end. This design can make the chair leg assembly 4 have a certain elasticity, so as to avoid damage of the chair leg assembly 4.

[0042] The chair wheel 45 comprises a wheel shell 451, a mounting column 452 mounted on the top of the wheel shell 451, and a roller 453 mounted on the bottom of the wheel shell 451.

[0043] Each weighing sensor 44 comprises a deformation block 441 fixed to the support arm 43, a deformation hole 442 formed through the deformation block 441, and at least one strain sensing element 443 attached to the deformation block 441; the region of the deformation block 441 where the deformation hole 442 is opened is defined as a deformation region, the strain sensing element 443 is fixed to the deformation region, and the chair wheel 45 is abutted to one side of the deformation block 441 away from the support arm 43. Specifically, the deformation hole 442 is horizontally arranged through the deformation block 441, the chair wheel 45 is abutted to the deformation region, and the strain sensing element 443 is electrically connected to the circuit board 42.

[0044] The side of the deformation block 441 close to the support arm 43 is a fixed surface 4411, and the side of the deformation block 441 away from the support arm 43 is a stress surface 4412, the fixed surface 4411 is abutted and fixed to the support arm 43, and the penetration direction of the deformation hole 442 is parallel to the fixed surface 4411; the mounting column 452 extends through the deformation block 441 from the stress surface 4412 to the fixed surface 4411 and forms a fixed connection with the deformation block 441, and the top of the wheel housing 451 is abutted to the stress surface 4412.

[0045] In this embodiment, the strain sensing element 443 comprises three mutually electrically connected ones, two of which are respectively attached to the fixed surface 4411 and the stress surface 4412 and are respectively located on opposite sides in the horizontal direction of the deformation hole 442, and the other one is attached to the side of the deformation block 441 connecting the fixed surface 4411 and the stress surface 4412 and is electrically connected to the circuit board 42. Of course, the number of strain sensing elements 443 can also be adaptively modified according to actual needs, such as one, two, three, etc.

[0046] The deformation block 441 is penetrated by the fastener 4413 from the fixed surface 4411 to the support arm 43 and forms a fixed connection with the support arm 43, and the chair wheel 45 and the fastener 4413 are respectively located on opposite sides in the horizontal direction of the deformation hole 442. This design can improve the fixing effect of the deformation block 441 and the support arm 43, and facilitates disassembly and assembly.

[0047] The support arm 43 is provided with an extension 432 protruding and extending on the side corresponding to the fastener 4413, the fastener 4413 is penetrated by the fixed surface 4411 to the extension 432 and forms a fixed connection with the extension 432, and the side of the extension 432 away from the support arm 43 is arranged in abutment with the fixed surface 4411. This design can further improve the fixing effect of the deformation block 441 and the support arm 43.

[0048] The strain sensing element 443 is electrically connected with the circuit board 42 through electronic wires 4431, and each of the electronic wires 4431 is located between the second bending portions 431 on the opposite sides of the corresponding support arm 43. Such a design not only realizes the electrical connection between the strain sensing element 443 and the circuit board 42, but also protects the electronic wires 4431 through the second bending portions 431. Of course, the electronic wires 4431 do not need to be designed without the circuit board 42.

[0049] The working principle of the weighing seat 100 in the embodiment is as follows: when a passenger sits on the cushion 11, the weight of the passenger is transmitted to the chassis 2 through the cushion 11, and then transmitted to the gas rod 3 through the chassis 2, and the gas rod 3 transmits the force to the chair leg assembly 4, and the chair leg assembly 4 is subjected to a downward force; since the fixing surface 4411 of the weighing sensor 44 is connected with the support arm 43 through the fastener 4413, the weighing sensor 44 is also subjected to a downward force, and the weighing sensor 44 transmits the force to the chair wheel 45 through the force receiving surface 4412, and the chair wheel 45 is subjected to a downward force, and since the chair wheel 45 is in contact with the ground, the chair wheel 45 generates a counterforce, which is transmitted to the weighing sensor 44 through the force receiving surface 4412, and since the deformation region of the weighing sensor 44 has a thickness smaller than that of other regions, the deformation region deforms, and the strain sensing element 443 attached to the deformation region senses the deformation amount and transmits the data to the circuit board 42 through the electronic wires 4431, and the circuit board 42 converts the data into force value data, thereby completing the weighing of the passenger. In addition, the passenger can read the measurement data through an APP software or other means, such as a connection mode between a Bluetooth speaker and a mobile phone APP, or directly install a display screen on the seat to display a lamp. Of course, the data signal of the weighing sensor 44 can be transmitted through a wireless network without the circuit board 42.

[0050] Compared with the prior art, the weighing seat 100 in the embodiment directly performs external assembly by designing the weighing sensor 44 between the corresponding support arm 43 and the chair wheel 45, without the need to separately assemble a certain component, so that the assembly is simpler, and in the maintenance process, the weighing sensor 44 can be directly replaced without the need to disassemble a certain component, so that the maintenance process is simpler. In addition, the weighing seat 100 can realize real-time weighing measurement, and can balance the weight distribution and concentrate the weight on the support end of the support arm 43 during the weighing process, thereby improving the weighing accuracy.

[0051] It should be noted that the various embodiments described above with reference to the drawings are merely intended to illustrate the present application and not to limit the scope of the present application, and those of ordinary skill in the art should understand that modifications or equivalent replacements made to the present application without departing from the spirit and scope of the present application should be covered within the scope of the present application. In addition, unless otherwise indicated by the context, the word appearing in the singular form includes the plural form, and vice versa. In addition, unless specifically stated, all or part of any embodiment can be used in combination with all or part of any other embodiment.

Claims

1. A weighing chair, comprising a seat body, a chassis fixed to the bottom of the seat body, an air cylinder fixed to the side of the chassis away from the seat body, and a chair leg assembly installed at the end of the air cylinder away from the chassis; characterized in that, the chair leg assembly comprises a fixed part fixed to the air cylinder, at least three mutually spaced support arms formed by the outer extension of the periphery of the fixed part, a chair wheel fixedly installed at the end of each support arm away from the fixed part, and at least one weighing sensor, the opposite sides of the weighing sensor are fixed to the corresponding support arm and chair wheel respectively.

2. The weighing seat of claim 1, wherein Each weighing sensor comprises a deformation block fixed to the support arm, a deformation hole formed through the deformation block, and at least one strain sensing element fixed to the deformation block. The area of the deformation block where the deformation hole is opened is defined as the deformation area, the strain sensing element is fixed to the deformation area, and the chair wheel abuts the side of the deformation block away from the support arm.

3. The weighing seat of claim 2, wherein, The chair wheel comprises a wheel shell, a mounting column installed at the top of the wheel shell, and a roller installed at the bottom of the wheel shell; the side of the deformation block close to the support arm is a fixed surface, the side of the deformation block away from the support arm is a stress surface, the fixed surface abuts and is fixed to the support arm, and the penetration direction of the deformation hole is parallel to the fixed surface; the mounting column extends from the stress surface to the fixed surface through the deformation block and forms a fixed connection with the deformation block, and the top of the wheel shell abuts the stress surface.

4. The weighing seat of claim 2, wherein, The chair leg assembly further comprises a circuit board fixed to the fixed part and electrically connected to the weighing sensor; the strain sensing element is electrically connected to the circuit board through an electronic wire.

5. The weighing seat of claim 3, wherein, The deformation block is penetrated from the fixed surface to the support arm through a fastener and forms a fixed connection with the support arm, and the chair wheel and the fastener are located on opposite sides in the horizontal direction of the deformation hole.

6. The weighing seat of claim 5, wherein, The side of the support arm corresponding to the fastener is provided with an extension part formed by protruding extension, the fastener is penetrated from the fixed surface to the extension part and forms a fixed connection with the extension part, and the side of the extension part away from the support arm is arranged in close contact with the fixed surface.

7. The weighing seat of claim 1, wherein, The number of weighing sensors is the same as the number of support arms, and the opposite sides of each weighing sensor are fixed to the corresponding support arm and chair wheel respectively.

8. The weighing seat of claim 1, wherein, The support arm is gradually inclined downward from one end close to the fixed part to the other end, and the one end of the support arm close to the fixed part is closer to the seat body than the other end.

9. The weighing seat of claim 1, wherein, The fixed part is hollow, and the side of the fixed part away from the air cylinder is provided with a sleeve protruding and extending around the inner periphery of the fixed part; the air cylinder is inserted into the fixed part and extends into the sleeve.

10. The weighing seat of claim 9, wherein, The outer periphery of the fixed part is provided with a first bending part formed by bending extension, and the opposite sides of each support arm are respectively provided with a second bending part formed by bending extension and connected to the first bending part respectively, and the first bending part and the second bending part respectively extend away from the seat body.

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