Pneumatic rod and seat

Abstract

The air pressure rod comprises an outer pipe, an inner pipe, a piston rod and a weighing sensor, the outer pipe is used for being connected with chair legs, the outer pipe is provided with a first containing cavity and a first opening communicated with the first containing cavity, the inner pipe is used for being connected with a chair seat, and the piston rod is connected with the weighing sensor. The inner pipe is provided with a second containing cavity and a second opening communicated with the second containing cavity, one end of the inner pipe is contained in the first containing cavity through the first opening, the inner pipe can move in the axial direction of the outer pipe, the piston rod is arranged in the first containing cavity, and one end of the piston rod is contained in the second containing cavity through the second opening; the weighing sensor is contained in the first containing cavity, the weighing sensor is arranged between the outer pipe and the piston rod, the weighing sensor is used for measuring the body weight, the traditional mode that the weighing sensor is assembled between the seat and the inner pipe can be abandoned, the seat is directly connected with the inner pipe, and the assembly efficiency of the seat can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic rods, and particularly relates to a pneumatic rod and a seat. Background Art

[0002] Seats play an important role in people's life, work, leisure and entertainment. People spend most of their time working and studying on seats. Due to sitting for a long time and lack of exercise, it is easy to cause a sharp increase in weight, and then lead to a sub-healthy state of the body. In order for people to monitor weight data in real time, seats with weighing functions have emerged as the times require.

[0003] Existing seats with weighing functions generally include a seat, chair legs, a weighing sensor and a pneumatic rod. The fixed end of the pneumatic rod is connected to the chair legs, and the weighing sensor is arranged between the seat and the movable end of the pneumatic rod. The weighing sensor is used to measure the force received by the seat to obtain the weight data of the user. Since the weighing sensor is installed between the seat and the movable end of the pneumatic rod, the installation steps of the pneumatic rod are cumbersome, and the assembly efficiency of the seat is low. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a pneumatic rod, which can improve the installation efficiency of the seat.

[0005] The utility model also provides a seat with the above pneumatic rod.

[0006] The pneumatic rod according to the first aspect embodiment of the utility model includes:

[0007] An outer tube for connecting with the chair legs, the outer tube is provided with a first accommodation cavity and a first opening communicating with the first accommodation cavity;

[0008] An inner tube for connecting with the seat, the inner tube is provided with a second accommodation cavity and a second opening communicating with the second accommodation cavity. One end of the inner tube is accommodated in the first accommodation cavity through the first opening, and the inner tube can move axially along the outer tube;

[0009] A piston rod arranged in the first accommodation cavity, and one end of the piston rod is accommodated in the second accommodation cavity through the second opening;

[0010] A weighing sensor accommodated in the first accommodation cavity, the weighing sensor is arranged between the outer tube and the piston rod, and the weighing sensor is used to measure the weight.

[0011] The pneumatic rod according to the first aspect embodiment of the utility model has at least the following beneficial effects:

[0012] The outer tube is connected to the chair leg, and the inner tube is connected to the seat. When the user wants to measure their weight, the user sits on the seat with their feet off the ground in a suspended state. The user's weight is applied to the piston rod through the inner tube, and then to the weighing sensor. The weighing sensor is used to measure the weight, enabling the seat to have a weighing function. By installing the weighing sensor inside the first accommodation cavity, the traditional method of assembling the weighing sensor between the seat and the inner tube can be abandoned. When assembling the seat, the seat can be directly connected to the inner tube, which can improve the assembly efficiency of the seat.

[0013] According to some embodiments of the present invention, the weighing sensor includes a deformable member and a strain gauge. One end of the deformable member is connected to the bottom wall of the first accommodation cavity, and the other end of the deformable member is connected to the end of the piston rod away from the inner tube. The strain gauge is disposed on one side of the deformable member. When the deformable member is stressed, it can deform, and the strain gauge is used to collect the deformation signal of the deformable member.

[0014] According to some embodiments of the present invention, the deformable member includes a first connecting portion, a deformable portion, and a second connecting portion. The first connecting portion is connected to the second connecting portion through the deformable portion. The first connecting portion is connected to the bottom wall of the first accommodation cavity, and the second connecting portion is connected to the end of the piston rod away from the inner tube. The strain gauge is disposed on the deformable portion.

[0015] According to some embodiments of the present invention, the second connecting portion is provided with a first through hole. Along the axial direction of the outer tube, the first through hole penetrates the second connecting portion.

[0016] According to some embodiments of the present invention, the first through hole is coaxially arranged with the deformable portion.

[0017] According to some embodiments of the present invention, the first connecting portion, the deformable portion, and the second connecting portion are of an integral structure.

[0018] According to some embodiments of the present invention, the second connecting portion is spaced apart from the bottom wall of the first accommodation cavity.

[0019] According to some embodiments of the present invention, a plurality of strain gauges are configured. The plurality of strain gauges are spaced apart along the circumferential direction of the deformable portion.

[0020] According to some embodiments of the present invention, the deformable portion is provided with a plurality of second through holes. The plurality of second through holes are spaced apart along the circumferential direction of the deformable portion. Along the axial direction of the outer tube, the second through holes penetrate the deformable portion, and the strain gauge is located between adjacent second through holes.

[0021] The seat according to the second aspect embodiment of the present utility model includes a seat, chair legs, and the pneumatic rod described in the above embodiments. The outer tube is connected to the chair legs, and the inner tube is connected to the seat.

[0022] The seat according to the second aspect embodiment of the present utility model has at least the following beneficial effects:

[0023] When the user wants to measure their weight, the user sits on the seat, with their feet off the ground and in a suspended state. The user's weight is applied to the piston rod through the inner tube, and then to the weighing sensor. The weighing sensor is used to measure the weight, enabling the seat to have a weighing function. By installing the weighing sensor inside the first accommodation cavity, the traditional method of assembling the weighing sensor between the seat and the inner tube can be abandoned. When assembling the seat, the seat can be directly connected to the inner tube, which can improve the assembly efficiency of the seat.

[0024] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0025] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0026] Figure 1 is a schematic structural diagram of the pneumatic rod according to the embodiment of the present utility model;

[0027] Figure 2 is a schematic internal structure diagram of the pneumatic rod according to the embodiment of the present utility model;

[0028] Figure 3 is a schematic structural diagram of the weighing sensor according to the embodiment of the present utility model;

[0029] Figure 4 is Figure 3 a top view of;

[0030] Figure 5 is Figure 4 a cross-sectional view taken along line A-A of;

[0031] Reference Signs:

[0032] Outer tube 100, First accommodation cavity 110, First opening 120, Inner tube 200, Second accommodation cavity 210, Second opening 220, Piston rod 300, Weighing sensor 400, Deformation member 410, First connection portion 411, Second connection portion 412, Deformation portion 413, First through hole 414, Second through hole 415, Strain gauge 420. Detailed Embodiments

[0033] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0034] In the description of the present utility model, it should be understood that with respect to the orientation description, such as the upper, lower, front, rear, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0035] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and "greater than", "less than", "exceeding", etc. are understood not to include the original number, and "above", "below", "within", etc. are understood to include the original number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.

[0037] Refer to Figure 1 、 Figure 2, The pneumatic rod according to the first aspect embodiment of the present utility model includes an outer tube 100, an inner tube 200, a piston rod 300, and a weighing sensor 400. The outer tube 100 is used to connect with the chair leg. The outer tube 100 is provided with a first accommodation cavity 110 and a first opening 120 communicating with the first accommodation cavity 110. The inner tube 200 is used to connect with the chair seat. The inner tube 200 is provided with a second accommodation cavity 210 and a second opening 220 communicating with the second accommodation cavity 210. One end of the inner tube 200 is placed in the first accommodation cavity 110 through the first opening 120. The inner tube 200 can move axially along the outer tube 100. The piston rod 300 is arranged in the first accommodation cavity 110, and one end of the piston rod 300 is placed in the second accommodation cavity 210 through the second opening 220. The weighing sensor 400 is placed in the first accommodation cavity 110. The weighing sensor 400 is arranged between the outer tube 100 and the piston rod 300. The weighing sensor 400 is used to measure the body weight. Thus, by installing the weighing sensor 400 inside the first accommodation cavity 110, the traditional method of assembling the weighing sensor 400 between the chair seat and the inner tube 200 can be abandoned. When assembling the chair, the chair seat can be directly connected to the inner tube 200, which can improve the assembly efficiency of the chair.

[0038] Specifically, the outer tube 100 is connected to the chair leg, and the inner tube 200 is connected to the chair seat. When the user wants to measure the body weight, the user sits on the chair seat with both feet off the ground in a suspended state. The user's body weight is applied to the piston rod 300 through the inner tube 200, and then applied to the weighing sensor 400. The weighing sensor 400 is used to measure the body weight so that the chair has a weighing function. By installing the weighing sensor 400 inside the first accommodation cavity 110, the traditional method of assembling the weighing sensor 400 between the chair seat and the inner tube 200 can be abandoned. When assembling the chair, the chair seat can be directly connected to the inner tube 200, which can improve the assembly efficiency of the chair.

[0039] It should be noted that high-pressure gas, which is nitrogen, is filled between the piston rod 300 and the inner tube 200, so that the force received by the inner tube 200 can be transmitted to the piston rod 300, which will not be elaborated here.

[0040] Refer to Figures 3 to 5 , In some embodiments of the present utility model, the weighing sensor 400 includes a deformation member 410 and a strain gauge 420. One end of the deformation member 410 is connected to the bottom wall of the first accommodation cavity 110, and the other end of the deformation member 410 is connected to the end of the piston rod 300 away from the inner tube 200. The strain gauge 420 is arranged on one side of the deformation member 410. When the deformation member 410 is stressed, it can deform. The strain gauge 420 is used to collect the deformation signal of the deformation member 410, which can facilitate the measurement of the user's body weight.

[0041] Specifically, when the user sits on the seat, the user's weight is applied to the piston rod 300 through the inner tube 200. The force received by the piston rod 300 is transmitted to the outer tube 100 through the deformation member 410. Since the deformation member 410 is clamped between the bottom wall of the first accommodating cavity 110 and the piston rod 300, the deformation member 410 can generate deformation. The strain gauge 420 is attached to the deformation member 410, so that the strain gauge 420 can generate deformation along with the deformation of the deformation member 410. The strain gauge 420 can collect the deformation signal of the deformation member 410, thus facilitating the measurement of the user's weight.

[0042] It should be noted that the strain gauge 420 can be a resistive strain gauge 420 or a capacitive strain gauge 420, and there is no limitation here.

[0043] In some embodiments of the present invention, the deformation member 410 includes a first connecting portion 411, a deformation portion 413, and a second connecting portion 412. The first connecting portion 411 is connected to the second connecting portion 412 through the deformation portion 413. The first connecting portion 411 is connected to the bottom wall of the first accommodating cavity 110, and the second connecting portion 412 is connected to the end of the piston rod 300 away from the inner tube 200. The strain gauge 420 is disposed on the deformation portion 413, which can facilitate the strain gauge 420 to collect the deformation amount of the deformation portion 413. The strain gauge 420 can convert the deformation amount of the deformation portion 413 into a deformation signal to facilitate the measurement of the user's weight.

[0044] Specifically, the first connecting portion 411 and the second connecting portion 412 are coaxially arranged, and the second connecting portion 412 is located inside the first connecting portion 411. When the user sits on the seat, the force received by the piston rod 300 is transmitted to the outer tube 100 through the second connecting portion 412 - deformation portion 413 - first connecting portion 411, so that the outer surface of the deformation portion 413 can generate deformation. The strain gauge 420 deforms along with the deformation of the deformation portion 413, which can facilitate the strain gauge 420 to collect the deformation amount of the deformation portion 413. The strain gauge 420 can convert the deformation amount of the deformation portion 413 into a deformation signal to facilitate the measurement of the user's weight.

[0045] In some embodiments of the present invention, the second connecting portion 412 is provided with a first through hole 414. Along the axial direction of the outer tube 100, the first through hole 414 penetrates through the second connecting portion 412, which can reduce the weight of the deformation member 410 to save the material cost of the deformation member, thereby reducing the production and manufacturing cost of the deformation member 410, which will not be elaborated here.

[0046] It should be noted that the first through hole 414 and the deformation portion 413 are coaxially arranged, so that the wall thickness of the deformation portion 413 is uniform, which can provide the measurement accuracy of the strain gauge 420.

[0047] In some embodiments of the present utility model, the first connecting portion 411, the deformation portion 413, and the second connecting portion 412 are of an integral structure, which can reduce the number of molds, so as to reduce the production cost of the molds, and thus reduce the production cost of the weighing sensor 400.

[0048] Specifically, the first connecting portion 411, the deformation portion 413, and the second connecting portion 412 can be integrally formed by die casting, which can reduce the number of molds, so as to reduce the production cost of the molds, and thus reduce the production cost of the weighing sensor 400.

[0049] Of course, in some specific embodiments, the first connecting portion 411 and the deformation portion 413 or the deformation portion 413 and the second connecting portion 412 can also be connected by welding, where the welding methods include but are not limited to resistance welding, laser welding, or ultrasonic welding, etc., which will not be elaborated here.

[0050] In some embodiments of the present utility model, a plurality of strain gauges 420 are arranged, and the plurality of strain gauges 420 are arranged at intervals along the circumferential direction of the deformation portion 413. By arranging the plurality of strain gauges 420, the deformation of the deformation portion 413 at different positions in its circumferential direction can be detected, so as to improve the measurement accuracy of the weighing sensor 400.

[0051] Specifically, the plurality of strain gauges 420 are evenly arranged at intervals along the circumferential direction of the deformation portion 413, and the plurality of strain gauges 420 are arranged at equal intervals along the circumferential direction of the deformation portion 413, which can detect the deformation of the deformation portion 413 at different positions in its circumferential direction, so as to improve the measurement accuracy of the weighing sensor 400.

[0052] In some embodiments of the present utility model, the second connecting portion 412 is spaced from the bottom wall of the first accommodating cavity 110, which can reserve a moving space for the second connecting portion 412, so that the second connecting portion 412 can drive the deformation portion 413 to deform, thereby ensuring the measurement accuracy of the weighing sensor 400.

[0053] Referring to Figure 4 、 Figure 5 In some embodiments of the present utility model, the deformation portion 413 is provided with a plurality of second through holes 415, and the plurality of second through holes 415 are arranged at intervals along the circumferential direction of the deformation portion 413. Along the axial direction of the outer tube 100, the second through holes 415 penetrate through the deformation portion 413, and the strain gauges 420 are located between adjacent second through holes 415, which can not only reduce the structural strength of the deformation portion 413 to facilitate the deformation of the deformation portion 413, but also facilitate the strain gauges 420 to measure the amount of deformation of the deformation portion 413.

[0054] Referring to Figure 1 、 Figure 2, The seat according to the second aspect embodiment of the present utility model includes a seat, chair legs, and a pneumatic rod according to the first aspect embodiment of the present utility model. The outer tube 100 is connected to the chair legs, and the inner tube 200 is connected to the seat. By installing the weighing sensor 400 inside the first accommodation cavity 110, the conventional method of assembling the weighing sensor 400 between the seat and the inner tube 200 can be abandoned. When assembling the seat, the seat can be directly connected to the inner tube 200, which can improve the assembly efficiency of the seat.

[0055] Specifically, the outer tube 100 is connected to the chair legs, and the inner tube 200 is connected to the seat. When a user wants to measure their weight, the user sits on the seat with their feet off the ground in a suspended state. The user's weight is applied to the piston rod 300 through the inner tube 200, and then applied to the weighing sensor 400. The weighing sensor 400 is used to measure the weight, so that the seat has a weighing function. By installing the weighing sensor 400 inside the first accommodation cavity 110, the conventional method of assembling the weighing sensor 400 between the seat and the inner tube 200 can be abandoned. When assembling the seat, the seat can be directly connected to the inner tube 200, which can improve the assembly efficiency of the seat.

[0056] It should be noted that the seat further includes a data processing module, and the data processing module is electrically connected to the strain gauge 420 to convert the deformation signal of the strain gauge 420 into weighing data.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0058] The above has described this embodiment in detail with reference to the drawings, but the present utility model is not limited to the above embodiment. Within the knowledge scope of those of ordinary skill in the technical field, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A pneumatic rod, for use in a seat, characterized in that, Comprising: An outer tube (100) for connecting with a chair leg, the outer tube (100) being provided with a first accommodation cavity (110) and a first opening (120) communicating with the first accommodation cavity (110); An inner tube (200) for connecting with a chair seat, the inner tube (200) being provided with a second accommodation cavity (210) and a second opening (220) communicating with the second accommodation cavity (210), one end of the inner tube (200) being received in the first accommodation cavity (110) through the first opening (120), and the inner tube (200) being movable along the axial direction of the outer tube (100); A piston rod (300) disposed in the first accommodation cavity (110), and one end of the piston rod (300) being received in the second accommodation cavity (210) through the second opening (220); A weighing sensor (400) received in the first accommodation cavity (110), the weighing sensor (400) being disposed between the outer tube (100) and the piston rod (300), and the weighing sensor (400) being used for measuring body weight.

2. The pneumatic rod according to claim 1, wherein, The weighing sensor (400) includes a deformable member (410) and a strain gauge (420), one end of the deformable member (410) being connected to the bottom wall of the first accommodation cavity (110), the other end of the deformable member (410) being connected to the end of the piston rod (300) away from the inner tube (200), the strain gauge (420) being disposed on one side of the deformable member (410), the deformable member (410) being capable of deforming when stressed, and the strain gauge (420) being used for collecting the deformation signal of the deformable member (410).

3. The pneumatic rod according to claim 2, characterized in that, The deformable member (410) includes a first connecting portion (411), a deformation portion (413) and a second connecting portion (412), the first connecting portion (411) being connected to the second connecting portion (412) through the deformation portion (413), the first connecting portion (411) being connected to the bottom wall of the first accommodation cavity (110), the second connecting portion (412) being connected to the end of the piston rod (300) away from the inner tube (200), and the strain gauge (420) being disposed on the deformation portion (413).

4. The pneumatic rod according to claim 3, characterized in that, The second connecting portion (412) is provided with a first through hole (414), and along the axial direction of the outer tube (100), the first through hole (414) penetrates through the second connecting portion (412).

5. The pneumatic rod according to claim 4, characterized in that, The first through hole (414) is coaxially arranged with the deformation portion (413).

6. The pneumatic rod according to claim 3, characterized in that, The first connecting portion (411), the deformation portion (413) and the second connecting portion (412) are of an integral structure.

7. The pneumatic rod according to claim 3, characterized in that, The second connecting portion (412) is spaced apart from the bottom wall of the first accommodation cavity (110).

8. The pneumatic rod according to claim 3, characterized in that, A plurality of the strain gauges (420) are configured, and the plurality of strain gauges (420) are spaced apart along the circumferential direction of the deformation portion (413).

9. The pneumatic rod according to claim 8, characterized in that, The deformation part (413) is provided with a plurality of second through holes (415), the plurality of second through holes (415) are arranged at intervals along the circumferential direction of the deformation part (413), along the axial direction of the outer tube (100), the second through holes (415) penetrate through the deformation part (413), and the strain gauge (420) is located between adjacent second through holes (415).

10. A seat, characterized in that, It includes a seat, chair legs and a pneumatic rod according to any one of claims 1 to 9, the outer tube (100) is connected to the chair legs, and the inner tube (200) is connected to the seat.

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