Multi-purpose seat capable of being adjusted through gravity

Abstract

The invention discloses a multipurpose chair capable of being adjusted through gravity, which comprises a chair back and a chair main body, and is characterized in that the multipurpose chair also comprises a connecting rod structure connected with the chair back, the chair back is rotatably connected with the chair main body, and the chair main body is provided with a driving unit; the driving unit is connected with the connecting rod structure and can drive the chair back to rotate through the connecting rod structure. Therefore, the chair back can be unfolded or folded through the cooperation of the driving unit and the connecting rod structure, a user does not need to pull the chair back with hands, and therefore operation is easy, and labor is saved.

Description

Technical Field

[0001] This invention relates to a nap chair, and more particularly to a multi-purpose chair that can be adjusted by gravity. Background Technology

[0002] More and more students are now taking lunch and naps at school. However, non-boarding students can only rest in the traditional forward-leaning position, which can easily cause various health problems such as numbness in the hands, drooling, neck pain, and poor sleep. As a result, some school chairs with nap functions have appeared on the market. However, these chairs all use manual folding backrests to unfold or retract the chair, which is not only cumbersome to operate, but also laborious. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a multi-purpose chair that can be adjusted by gravity. The technical solution adopted by this invention to solve its technical problem is: A multi-purpose chair that can be adjusted by gravity includes a backrest and a main body, characterized in that: it further includes a linkage structure connected to the backrest, and the backrest is rotatably connected to the main body. The main body is provided with a drive unit, which is connected to the linkage structure and can drive the backrest to rotate through the linkage structure.

[0004] The linkage structure includes a linkage hinged to the chair back and a sliding frame that can slide on the chair body. The linkage is hinged to the sliding frame, and the drive unit is connected to the sliding frame.

[0005] The sliding frame includes a sliding sleeve disposed opposite to the sliding sleeve and a seat tube connected to the corresponding sliding sleeve. The chair body includes a chair rod disposed opposite to the sliding sleeve. The chair rod slides in cooperation with the corresponding sliding sleeve. The connecting rod is hinged to the sliding sleeve.

[0006] It also includes a seat plate and guide bolts. The chair rod has a guide elongated hole, the sliding sleeve has a sleeve hole, the seat plate has a side plate with a side hole, and the guide bolts pass through the side hole, the sleeve hole, and the guide elongated hole.

[0007] It also includes a zero-gravity tilting structure. The chair body also includes chair legs arranged opposite each other and a chair rod connected to the two chair legs. The chair rod is connected to the corresponding chair legs through the zero-gravity tilting structure.

[0008] The tilting structure includes a rotating shaft, a limiting rod, and an end groove at the end of the chair leg. The end of the first chair rod is located in the end groove. The end of the first chair rod is provided with a shaft hole and a limiting elongated hole, and the end groove is provided with a shaft hole and a limiting hole. The rotating shaft is located in the shaft hole and the shaft hole, and the first chair rod can rotate around the rotating shaft. The limiting rod is located in the limiting elongated hole and the limiting hole, thereby limiting the rotation angle of the first chair rod.

[0009] It also includes a shaft, a connecting end one on the chair rod, a connecting end two on the chair back, an end hole one and a positioning elongated hole on the connecting end one, an end hole two and a limiting post on the connecting end two, the shaft is located in the end hole one and the end hole two and the chair back can rotate around the shaft, and the limiting post is located in the positioning elongated hole and can limit the rotation angle of the chair back.

[0010] The sliding frame is equipped with a sleeve and a telescopic tube, and the telescopic tube is equipped with a foot plate.

[0011] The telescopic tube has a connector at its end, the connector has a hole and a shaft tube that rotates with the hole, the foot plate is fixed at both ends of the shaft tube, the connector has a limiting block one at both ends, and the foot plate has a limiting block two at its end that can abut against the limiting block one.

[0012] It also includes a headrest, which is equipped with a sliding rod. The backrest is provided with a sliding hole that slides with the sliding rod. The sliding rod is provided with a plurality of positioning holes, and the sliding hole is provided with an elastic steel ball that engages with the corresponding positioning hole.

[0013] The beneficial effects of the present invention are as follows: The present invention also includes a linkage structure connected to the chair back, and the chair back is rotatably connected to the chair body. The chair body is provided with a drive unit, the drive unit is connected to the linkage structure, and the drive unit can drive the chair back to rotate through the linkage structure. Therefore, the chair back can be unfolded or retracted through the cooperation of the drive unit and the linkage structure, without the user having to manually turn the chair back. Thus, it is not only simple to operate, but also saves effort. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a view of the chair when it is not unfolded; Figure 2 It is a view from below with the chair not unfolded; Figure 3 This is an exploded structural view of the chair with the seat panel hidden. Figure 4 This is a partial exploded view of the chair from another angle; Figure 5 This is an exploded structural view of the sliding frame and chair arm 1; Figure 6 This is an exploded structural view of the footboard section. Detailed Implementation

[0016] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0017] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0018] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0019] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0020] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0021] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0022] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0023] Reference Figures 1 to 6This invention discloses a gravity-adjustable multi-purpose chair, including a backrest 1 and a chair body 2, and a linkage structure connected to the backrest 1. The backrest 1 and the chair body 2 are rotatably connected. The chair body 2 is equipped with a drive unit 3, which is connected to the linkage structure and can drive the backrest 1 to rotate through the linkage structure. With the above structure, the user only needs to control the control switch 100 of the drive unit 3 to fold the backrest 1 without manually operating it, greatly facilitating the user's use.

[0024] As shown in the figure, the linkage structure includes a linkage 4 hinged to the backrest 1 and a sliding frame 5 that can slide on the chair body 2. The linkage 4 is hinged to the sliding frame 5, and the drive unit 3 is connected to the sliding frame 5. The drive unit 3 is preferably a gas spring. Therefore, when the chair needs to be unfolded, the user manually flips the control switch 100 of the gas spring. Simply lying back will cause the backrest 1 to flip and unfold. At the same time, the sliding frame 5 will move a certain distance away from the backrest 1. The seat 6 is fixed on the sliding frame 5, thus forming an integral whole with the sliding frame 5. In this way, when the backrest 1 is flipped and unfolded, the center of gravity of the human body will not shift too much towards the backrest 1, causing the chair to tip over easily. In particular, the chair of this application adopts a bow-shaped chair structure. On the other hand, the movement of the seat 6 is equivalent to increasing the length of the chair after it is unfolded, making it more comfortable for the user to lie down.

[0025] Specifically, the sliding frame 5 includes a sliding sleeve 7 arranged opposite to each other and a seat tube 8 connected to the corresponding sliding sleeve 7. There are two sets of sliding sleeves 7, two in each set, so there are two seat tubes 8, forming a square frame. The chair body 2 includes a chair rod 9 arranged opposite to each other. The chair rod 9 slides with the corresponding sliding sleeve 7. The connecting rod 4 is hinged to the sliding sleeve 7, so the sliding sleeve 7 can drive the connecting rod 4 to move when it slides.

[0026] As a specific rotating structure of the chair back 1, it also includes a shaft 10. The chair rod 9 is provided with a connecting end 11, and the chair back 1 is provided with a connecting end 12. Of course, the chair back 1 is provided with a back tube 13. The connecting end 12 is located at the end of the back tube 13. The connecting end 11 is provided with an end hole 14 and a positioning elongated hole 15. The positioning elongated hole 15 is an arc hole. The connecting end 12 is provided with an end hole 16 and a limiting post 17. The shaft 10 is located in the end hole 14 and the end hole 16, and the chair back 1 can rotate around the shaft 10. The limiting post 17 is located in the positioning elongated hole 15 and can limit the rotation angle of the chair back 1. Through the above structure, the rotation angle of the chair back 1 can be automatically limited. When the chair back 1 rotates around the shaft 10, the limiting post 17 will also rotate along the positioning elongated hole 15. When it rotates to the end of the positioning elongated hole 15, the limiting post 17 will be stuck in that position, thereby limiting the rotation angle of the chair back 1.

[0027] In this application, the connecting rod 4 is L-shaped, with hinge point one connecting the connecting rod 4 to the chair back 1 and hinge point two connecting the connecting rod 4 to the sliding sleeve 7. The shaft 10, hinge point one, and hinge point two are arranged in a triangle. The height of hinge point two is located between shaft 10 and hinge point one. With the above structure, when the chair is reset and folded up, the connecting rod can more easily pull the chair back 1 to rotate, so a smaller gas spring can be selected.

[0028] Specifically, it also includes a seat plate 6 and guide bolts (not shown in the figure). The chair rod 9 is provided with a guide elongated hole 18, the sliding sleeve 7 is provided with a sleeve hole 19, the seat plate 6 is provided with a side plate 20, and the side plate 20 is provided with a side hole 21. The guide bolt passes through the side hole 21, the sleeve hole 19 and the guide elongated hole 18. Through the above structure, the guide bolt not only fixes the seat plate 6 and the sliding sleeve 7, but also guides and limits the movement of the sliding sleeve 7, thus serving as a multi-purpose structure.

[0029] It also includes a zero-gravity tilting structure. The chair body 2 also includes chair legs 22 arranged opposite to each other and chair rods 23 connected to the two chair legs 22. The chair rods 23 are connected to the corresponding chair legs 22 through the zero-gravity tilting structure. The chair legs 22 are L-shaped support structures and together with the chair rods 9, they form the structure of an arched chair. Because arched chairs are usually designed to be simple and elegant, with a unique shape and no back legs, the space under the chair is open and space-saving. Through the zero-gravity tilting structure, when the user lies down, the footrest can make the toes and heart basically level, allowing for better rest.

[0030] Specifically, the tilting structure includes a rotating shaft (not shown in the figure), a limiting rod (not shown in the figure), and an end groove 26 located at the end of the chair leg 22. The end of the chair rod 9 is an iron plate and is located in the end groove 26. The end of the chair rod 9 is provided with a shaft hole 27 and a limiting elongated hole 28, which is an arc-shaped hole. The end groove 26 is provided with a shaft hole 29 penetrating through the two side groove walls and a limiting hole 30. The rotating shaft is located in the shaft hole 27 and the shaft hole 29, and the chair rod 9 can rotate around the rotating shaft. The limiting rod is located in the limiting elongated hole 28 and the limiting hole 30, thereby limiting the rotation angle of the chair rod 9. Both the rotating shaft and the limiting rod are bolted, thus the cost is low and the installation is easy. The structure allows the user to sit on the seat 6 and manually activate the gas spring control switch 100. The user's own weight causes the seat 6 and sliding frame 5 to sink, while the sliding frame 5 drives the chair rod 9 to rotate around the pivot. This rotation does not affect the sliding of the sliding frame 5 along the chair rod 9. Since this application is a bow-shaped chair structure, the chair rod 9 is supported at only one end, allowing it to rotate. The limiting rod and the limiting elongated hole 28 work together to limit the rotation angle of the chair rod 9 after a certain angle. After releasing the gas spring control switch 100, the gas spring can maintain the angle of the chair rod 9 by supporting the sliding frame 5 and maintain the unfolding angle of the backrest 1 by connecting rod 4.

[0031] As shown in the figure, the sliding frame 5 is provided with a sleeve 31 and a telescopic tube 32. The sleeve 31 is welded to the sliding frame 5, specifically to the two seat tubes 8. The telescopic tube 32 is provided with a footrest 33, which is used to place the user's feet, so that the user can lie down and relax. One end of the gas spring is hinged to the chair rod 23, and the other end of the gas spring is hinged to the sleeve 31.

[0032] The specific structure is as follows: the end of the telescopic tube 32 is provided with a connector 34, the connector 34 is provided with a tube hole 35 and a shaft tube 36 that rotates with the tube hole 35, and the foot plate 33 is fixed at both ends of the shaft tube 36. The two ends of the connector 34 are provided with a limiting block 37, and the end of the foot plate 33 is provided with a limiting block 38 that can abut against the limiting block 37. When the chair is in the unfolded state, the telescopic tube 32 is retracted into the sleeve 31, and the foot plate 33 flips over and overlaps with the sleeve 31, located under the seat plate 6 and the sliding frame 5, thus saving space. When the chair needs to be unfolded during lunch break, simply pull out the telescopic tube 32 and then manually flip the foot plate 33. The foot plate 33 rotates through the shaft tube 36 and the tube hole 35 until the limiting block 37 abuts against the limiting block 38 and is positioned, so that the foot plate 33 remains in the unfolded state and supports the user's legs.

[0033] As shown in the figure, the chair also includes a headrest 39, which is equipped with a slide rod 40. The backrest 1 is provided with a sliding hole that slides with the slide rod 40. The slide rod 40 is provided with several positioning holes, and elastic steel balls that engage with the corresponding positioning holes are provided in the sliding holes. The headrest 39 is used to support the user's head, so that the user can be comfortable whether sitting or lying down. Moreover, the height of the headrest 39 can be adjusted by the cooperation of the elastic steel balls and the positioning holes, so as to accommodate users of different heights.

[0034] The working principle of this chair is as follows: When the chair is in the unfolded state, it functions as a seat. During a lunch break, the user sits directly on the chair and manually flips the gas spring control switch 100. The user only needs to lean back to unfold the backrest 1 and move the sliding frame 5 a certain distance away from the backrest 1. At the same time, the user's own weight causes the seat 6 and the sliding frame 5 to sink. Then, releasing the control switch 100 maintains the above state. Then, manually pulling out the footrest 33 and manually flipping the footrest 33 completes the unfolding of the entire chair. When folding up, the user leaves the chair first and manually flips the gas spring control switch 100. The elastic force of the gas spring will push the sliding frame 5 to move. The sliding frame 5 will drive the chair rod 9 to rotate and reset, and at the same time, drive the backrest 1 to rotate and reset through the connecting rod 4. Then, manually flipping the footrest 33 resets the chair. Then, pushing the footrest 33 drives the telescopic tube 32 to retract into the sleeve 31, restoring the chair to the seated state.

[0035] The foregoing has provided a detailed description of a gravity-adjustable multi-purpose chair according to embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A multi-purpose chair that can be adjusted by gravity, comprising a backrest and a main body, characterized in that: It also includes a linkage structure connected to the chair back, and the chair back is rotatably connected to the chair body. The chair body is provided with a drive unit, which is connected to the linkage structure and can drive the chair back to rotate through the linkage structure.

2. The multi-purpose chair that can be adjusted by gravity according to claim 1, characterized in that: The linkage structure includes a linkage hinged to the chair back and a sliding frame that can slide on the chair body. The linkage is hinged to the sliding frame, and the drive unit is connected to the sliding frame.

3. A multi-purpose chair adjustable by gravity according to claim 2, characterized in that: The sliding frame includes a sliding sleeve disposed opposite to the sliding sleeve and a seat tube connected to the corresponding sliding sleeve. The chair body includes a chair rod disposed opposite to the sliding sleeve. The chair rod slides in cooperation with the corresponding sliding sleeve. The connecting rod is hinged to the sliding sleeve.

4. A multi-purpose chair adjustable by gravity according to claim 3, characterized in that: It also includes a seat plate and guide bolts. The chair rod has a guide elongated hole, the sliding sleeve has a sleeve hole, the seat plate has a side plate with a side hole, and the guide bolts pass through the side hole, the sleeve hole, and the guide elongated hole.

5. A multi-purpose chair adjustable by gravity according to claim 3, characterized in that: It also includes a zero-gravity tilting structure. The chair body also includes chair legs arranged opposite each other and a chair rod connected to the two chair legs. The chair rod is connected to the corresponding chair legs through the zero-gravity tilting structure.

6. A multi-purpose chair adjustable by gravity according to claim 5, characterized in that: The tilting structure includes a rotating shaft, a limiting rod, and an end groove at the end of the chair leg. The end of the first chair rod is located in the end groove. The end of the first chair rod is provided with a shaft hole and a limiting elongated hole, and the end groove is provided with a shaft hole and a limiting hole. The rotating shaft is located in the shaft hole and the shaft hole, and the first chair rod can rotate around the rotating shaft. The limiting rod is located in the limiting elongated hole and the limiting hole, thereby limiting the rotation angle of the first chair rod.

7. A multi-purpose chair adjustable by gravity according to claim 3, characterized in that: It also includes a shaft, a connecting end one on the chair rod, a connecting end two on the chair back, an end hole one and a positioning elongated hole on the connecting end one, an end hole two and a limiting post on the connecting end two, the shaft is located in the end hole one and the end hole two and the chair back can rotate around the shaft, and the limiting post is located in the positioning elongated hole and can limit the rotation angle of the chair back.

8. A multi-purpose chair adjustable by gravity according to claim 2, characterized in that: The sliding frame is equipped with a sleeve and a telescopic tube, and the telescopic tube is equipped with a foot plate.

9. A multi-purpose chair adjustable by gravity according to claim 8, characterized in that: The telescopic tube has a connector at its end, the connector has a hole and a shaft tube that rotates with the hole, the foot plate is fixed at both ends of the shaft tube, the connector has a limiting block one at both ends, and the foot plate has a limiting block two at its end that can abut against the limiting block one.

10. A multi-purpose chair adjustable by gravity according to claim 1, characterized in that: It also includes a headrest, which is equipped with a sliding rod. The backrest is provided with a sliding hole that slides with the sliding rod. The sliding rod is provided with a plurality of positioning holes, and the sliding hole is provided with an elastic steel ball that engages with the corresponding positioning hole.

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