Anti-static lifting chair not prone to damage

Abstract

The utility model belongs to the technical field of chairs, and particularly relates to a difficult-to-damage anti-static lifting chair which comprises chair legs connected with one end of a lifting rod, and the other end of the lifting rod is connected with a tray. And a chair back is arranged on the tray. An anti-static part is arranged at the near-ground end of the lifting rod, and an adjusting rocker is arranged at the far-ground end of the lifting rod and can adjust the height of the lifting chair. A supporting mechanism is arranged on the chair back and comprises a connecting block, a supporting rod, a foot plate and a cross beam. A fastening plate is arranged on the chair back, and the connecting block is detachably connected with the fastening plate. One end of the supporting rod is hinged to the connecting block, and the other end of the supporting rod is rotationally connected with one end of the foot plate. The beam is connected with the two struts. By arranging the supporting mechanism on the chair back, the chair back of the lifting chair is supported more stably and is firmer and more durable, and the service life of the lifting chair is prolonged; when the supporting function of the supporting mechanism is not used, the two supporting rods of the supporting mechanism can be overturned to the left side and the right side of the user to serve as handrails.

Description

Technical Field

[0001] This utility model belongs to the technical field of chairs, specifically relating to a durable, anti-static, height-adjustable chair. Background Technology

[0002] Anti-static height-adjustable chairs are widely used in hospitals, electronic manufacturing workshops, laboratories, cleanrooms, and other places requiring anti-static properties. Through the coordinated structure of the anti-static seat, support components, and casters or footrests, an anti-static height-adjustable chair forms a complete static discharge system, quickly conducting static electricity generated by the human body to the ground, preventing damage to electronic components and the human body.

[0003] For example, the invention patent (authorization announcement number: CN113939214B) discloses a chair, including a base, a receiving portion connected to the upper end of the base, and a seat shell forming a seat surface. The seat shell is supported by the receiving portion. The chair also includes a backrest shell forming a backrest surface. The backrest shell is connected to the seat shell on both sides of the seat surface and both sides of the backrest surface. The backrest shell includes an extension extending from the backrest surface to the receiving portion below the seat shell. The extension is elastically deformable.

[0004] However, when users lean back in the chair, the backrest is easily deformed and damaged, or the lifting rod may be twisted and broken, thus reducing the chair's lifespan and potentially causing it to tip over and injure people. Therefore, it is necessary to design a new solution to address these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a durable, anti-static adjustable chair, which aims to solve the technical problem in the prior art that "when the user leans back in the adjustable chair, the backrest is easily deformed and damaged, or the lifting rod is twisted and broken, thus reducing the service life of the adjustable chair, and may also cause the adjustable chair to tip over and cause injury."

[0006] To achieve the above objectives, this utility model provides a durable, anti-static adjustable chair, comprising chair legs connected to one end of a lifting rod, the other end of which is connected to a tray. A chair back is mounted on the tray. An anti-static component is provided at the near-ground end of the lifting rod, and an adjusting rocker arm is provided at the far-ground end. The adjusting rocker arm can adjust the lifting rod's height to adjust the chair's height. A support mechanism is provided on the chair back, comprising a connecting block, a support rod, a footplate, and a crossbeam.

[0007] The chair back is provided with a fastening plate, and the connecting block is detachably connected to the fastening plate;

[0008] One end of the support rod is hinged to the connecting block, and the other end is rotatably connected to one end of the foot plate, with the other end of the foot plate supporting the ground;

[0009] The crossbeam is connected to the two support rods;

[0010] The support mechanism is adjustable to two height levels. When the chair is adjusted to the corresponding two height levels, the support mechanism adapts to support the chair back.

[0011] Optionally, the footboard is provided with a first support portion, a second support portion, a first limiting portion, and a second limiting portion; one end of the support rod connected to the footboard is provided with a support rod support portion and a support rod groove; when the first support portion of the footboard supports the ground, the first limiting portion abuts against and is limited by the bottom of the support rod groove; when the chair is lowered by one level and the footboard is rotated until the second support portion supports the ground, the support rod support portion and the second support portion are flush and both support the ground together, and the second limiting portion abuts against and is limited by the bottom of the support rod groove.

[0012] Optionally, the crossbeam and the two support rods are integrally formed.

[0013] Optionally, the top of the connecting block is provided with a connecting block support part. When the two support rods are flipped to be perpendicular to the lifting rod and the foot plate is located in front of the lifting chair, the connecting block support part limits and supports the crossbeam.

[0014] Optionally, a retainer can be detachably installed on the connecting block; the crossbeam is provided with a limiting hole, and the retainer is detachably connected to the limiting hole.

[0015] Optionally, the support rod is provided with a first support rod hole, the connecting block is provided with a connecting block hole, and the two support rods and the connecting block are hinged together by a first rotating shaft; one end of the first rotating shaft is provided with a first rotating shaft head, the connecting block is located between the two support rods, the shaft of the first rotating shaft passes through the two first support rod holes and the connecting block hole, the first rotating shaft head is engaged with one of the support rods for limiting, and the other end of the first rotating shaft is connected to a first rotating shaft cap, the first rotating shaft cap limiting the other support rod.

[0016] Optionally, the support rod is provided with a second support rod hole, the foot plate is provided with a foot plate hole, and the support rod and the foot plate are rotatably connected by a second rotating shaft; one end of the second rotating shaft is provided with a second rotating shaft head, one end of the foot plate hole of the foot plate is placed in the support rod groove of the support rod, the shaft of the second rotating shaft passes through the second support rod hole and the foot plate hole, and the distal end of the second rotating shaft head of the second rotating shaft is connected to a second rotating shaft cap.

[0017] Optionally, the chair leg includes a chair frame and a base, the base being mounted on the bottom surface of the chair frame.

[0018] The above-mentioned technical solutions of the anti-static lifting chair that is not easily damaged provided by this utility model embodiment have at least one of the following technical effects: In this utility model, by setting a support mechanism at the back of the chair, the back of the lifting chair is supported more stably, making the lifting chair more sturdy and durable, and extending the service life of the lifting chair; when the support function of the support mechanism is not used, the two rods of the support mechanism can also be flipped to the left and right sides of the user to be used as armrests. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art 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.

[0020] Figure 1 A schematic diagram of the structure of the durable anti-static lifting chair provided in this embodiment of the utility model;

[0021] Figure 2 An exploded view of the durable anti-static lifting chair provided in this embodiment of the utility model;

[0022] Figure 3 An exploded view of the support mechanism provided in an embodiment of this utility model;

[0023] Figure 4 An enlarged schematic diagram of the support rod provided in an embodiment of this utility model;

[0024] Figure 5 An enlarged view of the limiting hole of the crossbeam provided in an embodiment of this utility model;

[0025] Figure 6 A schematic diagram of the foot plate provided in an embodiment of this utility model;

[0026] Figure 7 Another perspective view of the footplate provided in this embodiment of the utility model;

[0027] Figure 8 A schematic diagram of the support mechanism provided in the embodiment of this utility model in the second height position;

[0028] Figure 9 A schematic diagram of the support mechanism provided in this embodiment of the utility model, used as a handrail.

[0029] The following are the labeling elements in the figure:

[0030] Lifting rod 1, adjusting rocker 11, anti-static component 12;

[0031] Chair legs 2, chair frame 21, base 22;

[0032] Tray 3;

[0033] Chair back 4, fastening plate 41;

[0034] Support mechanism 5, connecting block 51, connecting block support part 511, connecting block hole 512, support rod 52, support rod support part 521, support rod groove 522, first support rod hole 523, second support rod hole 524, foot plate 53, first support part 531, second support part 532, first limiting part 533, second limiting part 534, foot plate hole 535, crossbeam 54, limiting hole 541, first rotating shaft 55, first rotating shaft head 551, first rotating shaft cap 56, second rotating shaft 57, second rotating shaft head 571, second rotating shaft cap 58;

[0035] Casse 6. Detailed Implementation

[0036] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0040] In one embodiment of this utility model, such as Figures 1-9 As shown, a durable, anti-static adjustable chair is provided, including chair legs 2, one end of which is connected to a lifting rod 1, and the other end of the lifting rod 1 is connected to a tray 3. A backrest 4 is mounted on the tray 3. An anti-static component 12 is provided at the near-ground end of the lifting rod 1, naturally hanging down to ground and conduct electricity, preventing static electricity from damaging electronic components and the human body. The anti-static component 12 typically uses an anti-static grounding chain. An adjusting rocker arm 11 is provided at the far-ground end of the lifting rod 1. The adjusting rocker arm 11 can adjust the lifting rod 1 to adjust the height of the adjustable chair. A support mechanism 5 is provided on the backrest. The support mechanism 5 includes a connecting block 51, a support rod 52, a footplate 53, and a crossbeam 54.

[0041] The backrest 4 is provided with a fastening plate 41, and the connecting block 51 is detachably connected to the fastening plate 41.

[0042] One end of the support rod 52 is hinged to the connecting block 51, and the other end is rotatably connected to one end of the foot plate 53, with the other end of the foot plate 53 supporting the ground.

[0043] The crossbeam 54 is connected to the two support rods 52.

[0044] The support mechanism 5 is adjustable to two height levels. When the chair is adjusted to the corresponding two height levels, the support mechanism 5 adapts to support the chair back 4.

[0045] In this embodiment of the utility model, by providing a support mechanism 5 at the backrest 4, the backrest 4 of the lifting chair is supported more stably, making the lifting chair more sturdy and durable, and extending the service life of the lifting chair; when the support function of the support mechanism 5 is not used, the two rods 52 of the support mechanism 5 can also be flipped to the front of the lifting chair for the user to use as armrests, making full use of its different functions.

[0046] In another embodiment of this utility model, such as Figures 4-7As shown, the footplate 53 has a first support portion 531 and a second support portion 532 at one end supporting the ground, with the first support portion 531 perpendicular to the second support portion 532. The end of the footplate 53 connected to the support rod 52 has a first limiting portion 533 and a second limiting portion 534, with the first limiting portion 533 perpendicular to the second limiting portion 534. The end of the support rod 52 connected to the footplate 53 has a support rod support portion 521 and a support rod groove 522. The vertical distance from the axis of rotation of the footplate 53 around the support rod 52 to the second support portion 532 is equal to the distance from this axis to the support rod support portion 521. When the first support portion 531 of the footplate 53 supports the ground, the first limiting portion 533 abuts against and is limited by the bottom of the support rod groove 522. When the adjustable chair lowers to one height and rotates the footplate 53 until the second support part 532 supports the ground, the support rod support part 521 is flush with the second support part 532 and both support the ground. At this time, the second limiting part 534 abuts against and is limited by the support rod limiting part 523. The above design enables the support mechanism 5 to achieve the function of adjusting two heights.

[0047] In another embodiment of this utility model, such as Figures 2-3 As shown, the crossbeam 54 and the two support rods 52 are integrally formed, which makes their connection stronger and thus makes the two support rods 52 more effective in synchronous support and rotation.

[0048] In another embodiment of this utility model, such as Figure 3 As shown, the top of the connecting block 51 is provided with a connecting block support 511, which is a horizontal plane. The crossbeam 54 is perpendicular to the two support rods 52, which are located outside the connecting block 51. When the two support rods 52 are flipped to be perpendicular to the lifting rod 1 and the footboard 53 is located in front of the lifting chair, the supporting mechanism 5 is in the supporting state. The side of the crossbeam located directly behind it rotates to a horizontal state and abuts against the connecting block support 511. At this time, the connecting block support 511 supports the crossbeam 54, so that the two support rods 52 are horizontally located on the left and right sides of the user as handrails. The connecting block support 511 also restricts the support rods 52 from rotating freely.

[0049] In another embodiment of this utility model, such as Figure 3 , Figure 5 and Figure 9 As shown, a retainer 6 is detachably installed on the connecting block 51. The crossbeam 54 is provided with a limiting hole 541, and the retainer 6 is detachably connected to the limiting hole 541. The retainer 6 is generally a circumferential plastic retainer, which can be detachably connected to the limiting hole 541 of the crossbeam 54 under a certain external force and can be reused. This ensures that when the support rod 52 of the support mechanism 5 is perpendicular to the ground, the front and rear directions of the support mechanism 5 are limited and it does not flip arbitrarily, and also ensures safety when supporting the chair back 4.

[0050] In another embodiment of this utility model, such as Figures 2-3As shown, the support rod 52 has a first support rod hole 523. The connecting block 51 has a connecting block hole 512. The two support rods 52 and the connecting block 51 are hinged together by a first rotating shaft 55. One end of the first rotating shaft 55 has a first rotating shaft head 551. The connecting block 51 is located between the two support rods 52. The shaft of the first rotating shaft 55 passes through the two first support rod holes 523 and the connecting block hole 512. The first rotating shaft head 551 is larger than the diameter of the first support rod hole 523. The first rotating shaft head 551 abuts against the outer rod surface of one first support rod hole 523 for limiting its position. The other end of the first rotating shaft 55 is connected to a first rotating shaft cap 56. The first rotating shaft cap 56 is larger than the diameter of the first support rod hole 523. The first rotating shaft cap 56 limits the outer rod surface of the other first support rod hole 523. The first rotating shaft 55 and the first rotating shaft cap 56 are generally connected by threads. The first pivot 55 is set to ensure the coaxiality of the rotation axes when the two rods 52 rotate, so that the combination of the two rods 52 and the crossbeam 54 has a better flipping effect.

[0051] In another embodiment of this utility model, such as Figures 2-4 As shown, the support rod 52 has a second support rod hole 524. The foot plate 53 has a foot plate hole 535. The support rod 52 and the foot plate 53 are rotatably connected by a second rotating shaft 57. One end of the second rotating shaft 57 has a second rotating shaft head 571, which is larger than the diameter of the second support rod hole 524. One end of the foot plate hole 535 of the foot plate 53 is placed in the support rod groove 522 of the support rod 52. The shaft of the second rotating shaft 57 passes through the second support rod hole 524 and the foot plate hole 535. The distal end of the second rotating shaft head 571 of the second rotating shaft 57 is connected to a second rotating shaft cap 58, which is larger than the diameter of the second support rod hole 524. The second rotating shaft head 571 and the second rotating shaft cap 58 limit the movement of the second rotating shaft 57, allowing the foot plate hole 535 to rotate around the second rotating shaft 57. The second rotating shaft 57 and the second rotating shaft cap 58 are generally connected by threads. The above settings allow the foot plate 53 to rotate to adjust the height of the support mechanism 5, and also make it easy to assemble and disassemble the foot plate 53 and the support rod 52.

[0052] In another embodiment of this utility model, such as Figure 2 As shown, the chair leg 2 includes a chair frame 21 and a base 22. The base 22 is installed on the bottom surface of the chair frame 21. The base 22 generally uses casters to facilitate the movement of the height-adjustable chair.

[0053] The working principle of the durable, anti-static adjustable chair in this invention is as follows:

[0054] like Figure 1 As shown, the support mechanism 5 is in its highest position, and the first support part 531 of the foot plate 53 of the support mechanism 5 supports the ground, thus realizing the function of supporting the chair back 4.

[0055] Adjust the lifting lever 1 by operating the rocker arm 11, such as... Figure 8As shown, the height of the chair is lowered by one level, and the foot plate 53 of the support mechanism 5 rotates to the second support part 532 to support the ground, thus realizing the function of supporting the chair back 4.

[0056] When the support function of support mechanism 5 is not used or the chair is moved, such as Figure 9 As shown, the two rods 52 of the support mechanism 5 can be flipped to the front of the chair and used as armrests at any height.

[0057] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A durable, anti-static adjustable chair, comprising chair legs connected to one end of a lifting rod, the other end of the lifting rod connected to a tray, a chair back mounted on the tray, an anti-static component located near the ground of the lifting rod, and an adjusting rocker arm located at the far ground of the lifting rod, the adjusting rocker arm being capable of adjusting the lifting rod to adjust the height of the adjustable chair; characterized in that: The chair back is provided with a support mechanism, which includes a connecting block, a support rod, a foot plate, and a crossbeam; The chair back is provided with a fastening plate, and the connecting block is detachably connected to the fastening plate; One end of the support rod is hinged to the connecting block, and the other end is rotatably connected to one end of the foot plate, with the other end of the foot plate supporting the ground; The crossbeam is connected to the two support rods; The support mechanism is adjustable to two height levels. When the chair is adjusted to the corresponding two height levels, the support mechanism adapts to support the chair back.

2. The durable anti-static lifting chair according to claim 1, characterized in that: The footboard is provided with a first support part, a second support part, a first limiting part, and a second limiting part; the end of the support rod connected to the footboard is provided with a support rod support part and a support rod groove; when the first support part of the footboard supports the ground, the first limiting part abuts against and is limited by the bottom of the support rod groove; when the chair is lowered by one level and the footboard is rotated until the second support part supports the ground, the support rod support part and the second support part are flush and both support the ground, and the second limiting part abuts against and is limited by the bottom of the support rod groove.

3. The durable anti-static height-adjustable chair according to claim 2, characterized in that: The crossbeam and the two support rods are integrally formed.

4. The durable anti-static lifting chair according to claim 3, characterized in that: The top of the connecting block is provided with a connecting block support. When the two support rods are flipped to be perpendicular to the lifting rod and the foot plate is located in front of the lifting chair, the connecting block support limits and supports the crossbeam.

5. The durable anti-static height-adjustable chair according to claim 4, characterized in that: A retainer is detachably installed on the connecting block; the crossbeam is provided with a limiting hole, and the retainer is detachably connected to the limiting hole.

6. The durable anti-static adjustable chair according to any one of claims 2-5, characterized in that: The support rod is provided with a first support rod hole, and the connecting block is provided with a connecting block hole. The two support rods and the connecting block are hinged together by a first rotating shaft. One end of the first rotating shaft is provided with a first rotating shaft head. The connecting block is located between the two support rods. The shaft of the first rotating shaft passes through the two first support rod holes and the connecting block hole. The first rotating shaft head abuts against one of the support rods to limit its movement. The other end of the first rotating shaft is connected to a first rotating shaft cap, which limits the movement of the other support rod.

7. The durable, anti-static adjustable chair according to any one of claims 2-5, characterized in that: The support rod is provided with a second support rod hole, and the foot plate is provided with a foot plate hole. The support rod and the foot plate are rotatably connected by a second rotating shaft. One end of the second rotating shaft is provided with a second rotating shaft head. One end of the foot plate hole of the foot plate is placed in the support rod groove of the support rod. The shaft of the second rotating shaft passes through the second support rod hole and the foot plate hole. The distal end of the second rotating shaft head of the second rotating shaft is connected to a second rotating shaft cap.

8. The durable anti-static height-adjustable chair according to claim 7, characterized in that: The chair legs include a chair frame and base feet, with the base feet mounted on the bottom surface of the chair frame.

Images