Elastic device and chair structure

Abstract

The elastic device is of a chair structure, and the elastic device can be installed between a backrest and a waist rest of a chair to provide buffering and supporting for the waist rest. The elastic device comprises two opposite elastic mounting seats, the outer sides of the two elastic mounting seats are connected with the backrest and the waist rest through connecting pieces, an elastic piece is arranged between the inner sides of the two elastic mounting seats, telescopic limiting pieces are further arranged between the ends of the elastic mounting seats, and the telescopic limiting pieces can be rotating plates which are hinged to each other. And a plurality of grooves are formed in the middle of the telescopic plate, so that the elastic piece is limited and protected. The elastic device can be conveniently applied to different parts of various machines, the working stability and safety of the elastic device are not affected even if the elastic device is installed at an exposed position, and the appearance with the sense of science and technology and the sense of beauty is formed; the chair structure using the elastic device can provide effective support for a chair user, and the use comfort is effectively improved.

Description

Technical Field

[0001] The utility model relates to an elastic device for providing elastic force for other devices, and a structure of a chair using the elastic device. Background Art

[0002] Elastic devices are widely used in various mechanical equipment. Elastic devices include spring types, elastic bushing types, elastic retaining ring types, bellows types, rubber parts, gas springs, etc. Among them, springs have become the most common elastic devices due to their simple structure, diverse specifications, and stable operation. However, the use of springs must be correspondingly provided with positioning structures, such as positioning rods for placing springs, columns, rods for the springs to be sleeved, etc., so as to ensure the accuracy and stability of the spring installation and operation. However, these positioning structures generally need to be arranged inside the machine, which limits their scope of use.

[0003] In addition, in order to provide better support for the waist and improve the use comfort, the bottom of the backrest of an ergonomic chair generally protrudes forward. Although the protruding position can provide a certain supporting effect, its effect is relatively limited and it is difficult to meet the use requirements. In view of this, more and more chairs are equipped with independent lumbar supports, but these lumbar supports are all installed on the backrest or seat by a fixed installation method, and can only provide limited buffering through the mesh, leather, etc. covering the outer layer of the lumbar support bracket, and cannot effectively ensure the fit between the lumbar support and the back side of the human waist, which seriously affects the use comfort of the lumbar support. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an elastic device with a wide installation range and high aesthetics to improve the applicable range of elastic devices; at the same time, to provide a structure of a chair using the elastic device to improve the use comfort.

[0005] The elastic device of the utility model includes an elastic member, and two elastic mounting seats are respectively arranged at both ends of the elastic member. Positioners for fixing the ends of the elastic member are respectively arranged on the two elastic mounting seats. The two ends of the two elastic mounting seats are respectively opposite and are connected in a ring shape through a deformable telescopic limiting member.

[0006] Further, the telescopic limiting member includes two rotating plates hinged to each other at one end, and the other ends of the two rotating plates are respectively hinged to the two elastic mounting seats.

[0007] Further, the shapes of the elastic mounting seat and the rotating plate along the same cross-section are both arc-shaped, and the middle of the arc protrudes outward from the elastic member, and the ends are sequentially hinged.

[0008] Alternatively, the telescopic limiting member is an arc-shaped telescopic plate, and a plurality of concave grooves are arranged at intervals on the inner side of the arc in the middle of the telescopic plate.

[0009] Furthermore, one end of the telescopic plate extends from one of the elastic mounting seats, and the other end is hinged to the other elastic mounting seat.

[0010] Furthermore, the elastic member is a spring. The positioner includes an inner positioning block and an outer positioning block. There is an annular gap between the inner positioning block and the outer positioning block, and the end of the elastic member is arranged in the gap.

[0011] Furthermore, the inner positioning block and the outer positioning block are two concentric positioning rings with different diameters and protruding outwards.

[0012] Furthermore, connecting members for connection are respectively installed on the outer sides of the two elastic mounting seats.

[0013] Furthermore, at least one connecting member is a hinged seat with an opening.

[0014] Furthermore, at least one connecting member is a mounting seat for fixed connection.

[0015] The chair structure described in the present utility model includes a backrest and a lumbar support, and an elastic device as described above is installed between the backrest and the lumbar support.

[0016] In the elastic device of the chair structure of the present utility model, the two elastic mounting seats are respectively installed on two mechanical components that move relative to each other and require the elastic member to provide an effect, such as the backrest and the lumbar support of a chair. The two elastic mounting seats respectively install and fix the two ends of the elastic member through the positioner. The ends of the two elastic mounting seats face each other, and the relative ends are connected by a deformable telescopic limiting member; the telescopic limiting member can be two rotatable plates hinged to each other, and the other ends of the two rotatable plates are respectively hinged to the elastic mounting seats; the telescopic limiting member can also be a deformable telescopic plate extending from the elastic mounting seat, and the end of the telescopic plate is hinged to the other elastic mounting seat; thus, the two elastic mounting seats and the two telescopic limiting members are connected in a ring shape. When the user sits down and presses on the lumbar support, the elastic member is compressed and shrinks, and the rotatable plates hinged to each other approach each other or the telescopic plate shrinks; when the user leaves or the force of leaning back is reduced, the elastic member pushes the elastic mounting seat and the lumbar support to reset through its elastic force, or pushes the lumbar support to closely adhere to the user's waist, and the rotatable plates hinged to each other rotate in the opposite direction or the telescopic limiting plate extends, thereby providing effective support for the user. The elastic device can, while ensuring the effect of the elastic member, limit the direction of elastic deformation by the rotatable plate and the telescopic plate, and can also protect the inner elastic member; thus, this kind of elastic device can be conveniently applied to different parts of various machines, and even when installed in an exposed position, it does not affect the working stability and safety, and forms an extremely technological and aesthetic appearance; moreover, it can provide effective support for the chair user and effectively improve the use comfort. Description of the Drawings

[0017] Figure 1 Figure 1 is a schematic diagram of the usage state of the first embodiment of the elastic device installed on a chair.

[0018] Figure 2 、 3 is Figure 1 a schematic diagram of the structure of the elastic device shown in Figure 2.

[0019] Figure 4 Figure 3 is a schematic diagram of the contracted state of the elastic device.

[0020] Figure 5 Figure 4 is a schematic diagram of the extended state of the elastic device.

[0021] Figure 6 、 7 Figure 5 is a schematic diagram of the structure of the elastic device without the elastic member.

[0022] Figure 8 Figure 6 is a schematic diagram of the usage state of the second embodiment of the elastic device installed on a chair.

[0023] Figure 9 、 10 is Figure 8 a schematic diagram of the structure of the elastic device shown in Figure 7.

[0024] Figure 11 Figure 8 is a schematic diagram of the structure of the elastic mounting base of the second embodiment. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, then the directional indications will also change accordingly.

[0027] If there are descriptions such as "first" or "second" in the embodiments of the present utility model, the descriptions of "first" or "second" are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] Embodiment 1, as Figure 1-7 shown, a resilient device is proposed.

[0029] The resilient device of this embodiment includes a resilient member 1 and two resilient mounting seats 2 respectively arranged at both ends of the resilient member. Positioners 3 for fixing the ends of the resilient member are respectively provided on the two resilient mounting seats. The two ends of the two resilient mounting seats are respectively opposite to each other and are connected by a deformable telescopic limiting member 4; the telescopic limiting member 4 includes two rotating plates hinged to each other at one end, and the other ends of the two rotating plates are respectively hinged to the two resilient mounting seats.

[0030] As Figure 1-3 shown, the resilient device is installed on a chair and is connected to the backrest 10 and the lumbar support 20 of the chair for providing buffering and support to the lumbar support. The middle parts of the two resilient mounting seats are respectively connected to one end of the resilient member through positioners. At the same time, the ends of the two resilient mounting seats are pairwise opposite, and the opposite ends are also hinged by two rotating plates. The two rotating plates are also hinged to each other, so that the two resilient mounting seats and the four rotating plates are annularly and sequentially hinged together end to end. As Figure 4 shown, when the user sits down and presses on the lumbar support, the resilient mounting seat installed on the lumbar support moves towards the other resilient mounting seat, the resilient member is compressed and contracted, and the mutually hinged rotating plates also approach each other, thereby forming a buffer; when the user leaves or the force of leaning back is reduced, as Figure 5 shown, the resilient member pushes the resilient mounting seat and the lumbar support to reset through its elastic force, or pushes the lumbar support to closely adhere to the user's waist, thereby providing effective support.

[0031] For the resilient device, the shapes of the resilient mounting seat 2 and the rotating plate 4 along the same cross-section are both arc-shaped. The middle parts of the arcs protrude outward from the resilient member 1, and the ends are sequentially hinged, thereby forming a circular ring or an ellipse, which can not only improve the smoothness of rotation but also improve the aesthetics.

[0032] The described elastic device, the elastic member 1 can be a gas spring, a rubber spring, or a general mechanical spring. It has a simple structure, a large deformation range, and a wide application range. On the inner sides of the two elastic mounting seats, that is, on the opposite sides, a positioner is installed. The positioner can be a positioning post for the spring to be sleeved in, or an annular groove for the end of the spring to be inserted into, or as Figure 6 , 7 shown, the positioner 3 includes an inner positioning block 31 and an outer positioning block 32. There is an annular gap 33 between the inner positioning block and the outer positioning block. The end of the elastic member 1 is arranged in the gap; the inner positioning block 31 and the outer positioning block 32 are two concentrically arranged positioning rings with different diameters and protruding outwards. It has a simple structure and a beautiful appearance; of course, the inner positioning ring can also be a positioning post or a cross-shaped positioning block, etc., to ensure the installation stability while meeting different usage requirements.

[0033] For the described elastic device, on the outer sides of the two elastic mounting seats 2, connecting members for connection are respectively installed, such as connecting mechanical components, or connecting the elastic mounting seats of other elastic devices. The connecting member can be, for example, Figure 6 the hinge seat 5 with an opening shown as Figure 7 shown, or it can be the mounting seat 6 for fixed connection shown as

[0034] The mounting seat can be connected to the mechanical component through screws, bolts, buckles, etc., or it can be an annular mounting sleeve, which is fixed in cooperation with a positioning post, an annular groove, etc. to improve the convenience of installation and disassembly. Or one of the connecting members is a hinge seat and the other is a mounting seat. Figure 8-11 shown, an elastic device.

[0035] For the elastic device of this embodiment, the telescopic limit member 4 is an arc-shaped telescopic plate, and a number of concave grooves 41 are arranged at intervals on the inner side of the arc in the middle of the telescopic plate; the rest is the same as in Embodiment 1.

[0036] The two ends of the telescopic plate can be integrally formed with or fixedly installed on the two elastic mounting seats 2, or one end of the telescopic plate can extend from one of the elastic mounting seats 2, and the other end is hinged to the other elastic mounting seat.

[0037] As Figure 8As shown, the elastic device can also be installed on the chair and connected to the backrest 10 and the lumbar support 20 of the chair to provide buffering and support for the lumbar support. The groove in the middle of the telescopic plate can serve as a space for deformation, so that the middle part of the arc-shaped telescopic plate can be extended or contracted as the elastic member deforms. This can not only limit the elastic deformation direction and protect the elastic member to ensure that the elastic member provides effective buffering and stable support for the lumbar support, but also improve the comfort of using the chair. The end of the telescopic plate is hinged to the elastic mounting seat, which can better ensure the deformation effect and facilitate the installation and disassembly of the elastic mounting seat.

[0038] This application also proposes a chair structure, including a backrest 10 and a lumbar support 20, and an elastic device as shown in Figure 1-7 Figures 8-11 is installed between the backrest and the lumbar support.

[0039] The top of the lumbar support of the chair and the backrest can also be connected by an elastic device, such as using an elastic sheet.

[0040] The top of the lumbar support of the chair can also be hinged to the backrest.

[0041] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An elastic device, comprising an elastic member, characterized in that: There are two elastic mounting seats respectively arranged at both ends of the elastic member. Positioners for fixing the ends of the elastic member are respectively provided on the two elastic mounting seats. The two ends of the two elastic mounting seats are respectively opposite to each other and are connected in a ring shape through deformable telescopic limit members.

2. The elastic device according to claim 1, characterized in that: The telescopic limit member includes two rotating plates hinged to each other at one end, and the other ends of the two rotating plates are respectively hinged to the two elastic mounting seats.

3. The elastic device according to claim 2, wherein: The shapes of the elastic mounting seat and the rotating plate along the same cross-section are both arc-shaped. The middle part of the arc protrudes outward from the elastic member, and the ends are sequentially hinged.

4. The elastic device according to claim 1, wherein: The telescopic limit member is an arc-shaped telescopic plate, and a number of recessed grooves are arranged at intervals on the inner side of the arc in the middle of the telescopic plate.

5. The elastic device according to claim 4, characterized in that: One end of the telescopic plate extends from one of the elastic mounting seats, and the other end is hinged to the other elastic mounting seat.

6. The elastic device according to claim 1, characterized in that: The elastic member is a spring. The positioner includes an inner positioning block and an outer positioning block. There is an annular gap between the inner positioning block and the outer positioning block, and the end of the elastic member is arranged in the gap.

7. The elastic device according to claim 6, characterized in that: The inner positioning block and the outer positioning block are two concentrically arranged positioning rings with different diameters and protruding outward.

8. The elastic device according to claim 1, characterized in that: Connectors for connection are respectively installed on the outer sides of the two elastic mounting seats.

9. The resilient device according to claim 8, wherein: At least one connector is a hinge seat with an opening.

10. The elastic device according to claim 8, characterized in that: At least one connector is a mounting seat for fixed connection.

11. A chair structure, comprising a backrest and a lumbar support, characterized in that: An elastic device as described in any one of claims 1-10 is installed between the backrest and the lumbar support.

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