Learning table with table board capable of being adjusted to be inclined

Abstract

The utility model provides a learning table with a table board capable of being adjusted obliquely. The learning table comprises a table frame, a table board body, a first hinge arm, a second hinge arm, a one-way rotating assembly and a power assisting assembly. The one-way rotating assembly is used for limiting the rotating state of the second hinge arm, so that the table board body can only turn over upwards. Or the one-way rotating assembly is used for releasing the limitation on the second hinge arm, so that the table plate body can freely turn over. The power assisting assembly comprises a third hinge arm and a first elastic part, the third hinge arm is provided with a fifth end and a sixth end, the fifth end is in sliding fit with the first hinge arm, the sixth end is hinged to the second hinge arm, and the first elastic part is used for applying elastic force to the fifth end so that the fifth end can tend to move towards the second end. Due to the fact that the first elastic piece enables the fifth end to have the trend of moving towards the second end, when a user turns over the table board body upwards, the turning process is lighter, the user can open the table board body conveniently, and the use experience feeling of the user is improved.

Description

Technical Field

[0001] This utility model relates to the field of study desk technology, specifically to a study desk with an adjustable tilt tabletop. Background Technology

[0002] Traditional flat desks, lacking a tilting function, force students to bend over, easily leading to cervical spondylosis and eye strain. Desks with tilting surfaces, on the other hand, allow books and stationery to fall naturally at a better angle, providing better support for the student's neck and back, and reducing discomfort during long study sessions.

[0003] Existing mechanisms for tilting the tabletop either use a lockable gas spring for support or a folding tilting mechanism. However, neither of these mechanisms is designed with an assist device to flip the tabletop upwards. Because the tabletop is heavy, it is difficult for users to flip it upwards, making the operation inconvenient. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a study table with an adjustable tilt tabletop, which makes the flipping process easier and more convenient for users to open the tabletop when the tabletop body is flipped upward.

[0005] To achieve the above objectives, this utility model provides a study desk with an adjustable tilt tabletop, comprising a table frame; a tabletop body hinged to the table frame; a first hinge arm having a first end and a second end, the first end being hinged to the table frame; a second hinge arm having a third end and a fourth end, the third end being hinged to the tabletop body, and the fourth end being hinged to the second end; a unidirectional rotation component for restricting the rotation state of the second hinge arm, so that the tabletop body can only perform an upward flipping action, or for releasing the restriction on the second hinge arm, so that the tabletop body can perform a free flipping action; and an assist component for providing assistance to the rotation of the second hinge arm during the upward flipping of the tabletop body;

[0006] The assist component includes a third hinge arm and a first elastic element. The third hinge arm has a fifth end and a sixth end. The fifth end is slidably engaged with the first hinge arm. The sliding direction of the fifth end is parallel to the length direction of the first hinge arm. The sixth end is hinged with the second hinge arm. The first elastic element is used to apply elastic force to the fifth end so that the fifth end has a tendency to move towards the second end.

[0007] Preferably, the first hinge arm is provided with a guide hole extending along the length of the first hinge arm; the third hinge arm is provided with a first pin, which is slidably fitted in the guide hole; the first hinge arm is provided with a second pin near the second end; and the first elastic element connects the first pin and the second pin respectively.

[0008] Preferably, it further includes a first mounting base and a second mounting base, the first mounting base being disposed on the table frame and hinged to the first end; the second mounting base being disposed on the tabletop body and hinged to the third end.

[0009] Preferably, the unidirectional rotation assembly includes a unidirectional rotating component and a connecting component. The unidirectional rotating component is disposed on the first hinge arm and located at the second end. The connecting component passes through the unidirectional rotating component and can be connected to the unidirectional rotating component and can move along the axial direction of the unidirectional rotating component. The connecting component is movably connected to the second hinge arm and has no relative rotation with the second hinge arm.

[0010] When the connector is connected to the unidirectional rotating member, the second hinge arm can rotate in one direction; when the connector is disconnected from the unidirectional rotating member, the second hinge arm can rotate freely.

[0011] Preferably, the connector includes a first connecting portion and a second connecting portion connected together. The first connecting portion can cooperate with the unidirectional rotating member; the second connecting portion cooperates with the second hinge arm so that the connector and the second hinge arm do not rotate relative to each other.

[0012] Preferably, a limiting cap is provided at the end of the second connecting portion away from the first connecting portion. The unidirectional rotation assembly further includes a second elastic element, which is sleeved on the second connecting portion. The two ends of the second elastic element abut against the limiting cap and the second hinge arm, respectively. The second elastic element is used to apply elastic force to the connecting member to prevent the first connecting portion from disengaging from the unidirectional rotation assembly.

[0013] Preferably, a third connecting part is provided between the first connecting part and the second connecting part. The third connecting part is tapered, with its large-diameter end connected to the first connecting part and its small-diameter end connected to the second connecting part.

[0014] Preferably, a fourth connecting part is provided between the third connecting part and the second connecting part, the outer diameter of the fourth connecting part is equal to the diameter of the circumcircle of the second connecting part, and the fourth connecting part is movably connected to the first hinge arm.

[0015] Preferably, the unidirectional rotation component further includes a pull rope, which is connected to the first connecting part.

[0016] Preferably, the first hinge arm is provided with a support frame, the pull rope passes through the support frame, and the pull rope is provided with a limiting head, which can abut against the side of the support frame away from the first connecting part.

[0017] The beneficial effects of this utility model are:

[0018] This utility model discloses a study desk with an adjustable tilt tabletop. Through the design of an assistive component, the first elastic element causes the fifth end to tend to move towards the second end. When the user flips the tabletop upwards, the flipping process is made easier, thus enhancing the user experience and making it suitable for widespread adoption. Simultaneously, when flipping the tabletop downwards, the tabletop's own weight counteracts the resistance of the first elastic element, allowing for easy repositioning of the tabletop.

[0019] Furthermore, by designing a unidirectional rotating component, the second hinge arm can be locked in one direction, allowing the tabletop to remain in an inclined position after being flipped upwards. Simultaneously, the locking of the second hinge arm can be released, facilitating the tabletop's reset and enabling the user to easily adjust its position. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 A schematic diagram of the structure of a study desk with an adjustable tabletop provided in an embodiment of the present utility model;

[0022] Figure 2 This is a side view of the study desk;

[0023] Figure 3 This is a schematic diagram of the structure in which the first hinge arm and the second hinge arm mate.

[0024] Figure 4 for Figure 3 A partial schematic diagram under the condition;

[0025] Figure 5 This is a side view of the first hinge arm and the second hinge arm;

[0026] Figure 6 This is a structural schematic diagram of the connector;

[0027] Figure 7 This is a partial schematic diagram showing the engagement of the limiting cap and the second elastic element;

[0028] Figure 8 for Figure 5 Schematic diagram of AA section in the middle;

[0029] Figure label:

[0030] 10. Table frame; 20. Tabletop body; 30. First hinge arm; 31. First end; 32. Second end; 33. First side plate; 34. Second side plate; 35. Guide hole; 36. Second pin; 40. Second hinge arm; 41. Third end; 42. Fourth end; 43. Third side plate; 44. Fourth side plate; 50. One-way rotation assembly; 51. One-way rotation component; 52. Connector; 521. First connecting part; 522. Second connecting part; 523. Limit cap; 524. Third connecting part; 525. Fourth connecting part; 53. Second elastic element; 54. Pull rope; 55. Limit head; 60. Assist assembly; 61. Third hinge arm; 611. First pin; 62. First elastic element; 70. First mounting base; 80. Second mounting base; 90. Support frame. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0032] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 utility model according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] like Figure 1-8 As shown, in one embodiment of this utility model, a study desk with an adjustable tabletop is provided, including a table frame 10, a tabletop body 20, a first hinge arm 30, a second hinge arm 40, a one-way rotation component 50, and an assist component 60. The tabletop body 20 is hinged to the table frame 10. The first hinge arm 30 has a first end 31 and a second end 32, with the first end 31 hinged to the table frame 10. The second hinge arm 40 has a third end 41 and a fourth end 42, with the third end 41 hinged to the tabletop body 20 and the fourth end 42 hinged to the second end 32. The one-way rotation component 50 is used to restrict the rotation state of the second hinge arm 40, so that the tabletop body 20 can only perform an upward flipping action. Alternatively, the one-way rotation component 50 is used to release the restriction on the second hinge arm 40, allowing the tabletop body 20 to perform a free flipping action. The assist component 60 is used to provide assistance to the rotation of the second hinge arm 40 during the upward flipping process of the tabletop body 20.

[0038] The assist component 60 includes a third hinge arm 61 and a first elastic member 62. The third hinge arm 61 has a fifth end and a sixth end. The fifth end is slidably engaged with the first hinge arm 30. The sliding direction of the fifth end is parallel to the length direction of the first hinge arm 30. The sixth end is hinged with the second hinge arm 40. The first elastic member 62 is used to apply elastic force to the fifth end so that the fifth end has a tendency to move towards the second end 32.

[0039] This embodiment discloses a study desk with an adjustable tilt tabletop. Through the design of the assist component 60, the first elastic element 62 causes the fifth end to tend to move towards the second end 32. When the user flips the tabletop body 20 upwards, the flipping process is made easier, thus enhancing the user experience and making it suitable for widespread adoption. Simultaneously, when flipping the tabletop body 20 downwards, the weight of the tabletop body 20 counteracts the resistance of the first elastic element 62, allowing for easy repositioning of the tabletop body 20.

[0040] Furthermore, by designing the unidirectional rotating component 50, it is possible to achieve unidirectional locking of the second hinge arm 40, so that after the tabletop body 20 is flipped upward, the tabletop body 20 can be kept in an inclined state. At the same time, it can also release the locking state of the second hinge arm 40, making it convenient for the tabletop body 20 to reset, thereby facilitating the user to adjust the position of the tabletop body 20.

[0041] In one embodiment, the first hinge arm 30 is provided with a guide hole 35 extending along the length of the first hinge arm 30, and the third hinge arm 61 is provided with a first pin 611, which is slidably fitted within the guide hole 35. The first hinge arm 30 is provided with a second pin 36 near the second end 32, and a first elastic element 62, selected as a tension spring, connects the first pin 611 and the second pin 36. The study desk also includes a first mounting base 70 and a second mounting base 80. The first mounting base 70 is mounted on the table frame 10 and hinged to the first end 31. The second mounting base 80 is mounted on the tabletop body 20 and hinged to the third end 41.

[0042] The first hinge arm 30 includes a first side plate 33 and a second side plate 34, which are connected by a second pin 36, and are respectively hinged to the first mounting base 70. The second hinge arm 40 includes a connected third side plate 43 and a fourth side plate 44, which are respectively hinged to the second mounting base 80. The first side plate 33 and the third side plate 43 are rotatably connected by a third pin, while the second side plate 34 and the fourth side plate 44 are connected by a one-way rotation assembly 50.

[0043] The first side plate 33 and the second side plate 34 are each provided with guide holes 35, and the two ends of the first pin 611 extend into the two guide holes 35 respectively. The third hinge arm 61 includes the first pin 611 and two connecting rods. The fifth end of the connecting rod is connected to the first pin 611, and the sixth end of the connecting rod is hinged to the third side plate 43 or the fourth side plate 44.

[0044] When the tabletop body 20 is in its initial position, the first pin 611 is close to the first mounting base 70, and the first elastic element 62 is in a stretched state. The first elastic element 62 causes the fifth end to tend to move towards the second end 32. When the user flips the tabletop body 20 upward, the first pin 611 will move along the guide hole 35 towards the second pin 36 or the fourth end 42. In this way, under the action of the first elastic element 62, it will provide assistance for the rotation of the second hinge arm 40, thereby making the upward flipping of the tabletop body 20 easier.

[0045] In one embodiment, the unidirectional rotation assembly 50 includes a unidirectional rotating member 51 and a connecting member 52. The unidirectional rotating member 51 is fixedly mounted on the second side plate 34 of the first hinge arm 30 and located at the second end 32. The unidirectional rotating member 51 uses a unidirectional needle roller bearing, which is existing technology and will not be described in detail in this embodiment. The connecting member 52 passes through the unidirectional rotating member 51 and can be connected to the unidirectional rotating member 51 and can move along the axial direction of the unidirectional rotating member 51. The connecting member 52 is movably connected to the second hinge arm 40 and does not rotate relative to the second hinge arm 40. When the connecting member 52 is connected to the unidirectional rotating member 51, the second hinge arm 40 can perform a unidirectional rotation. When the connecting member 52 is disconnected from the unidirectional rotating member 51, the second hinge arm 40 can perform a free rotation.

[0046] When the connector 52 is engaged in the one-way rotating part 51 (the connector 52 presses against the needle roller), the connector 52 can only rotate in one direction within the one-way rotating part 51. Since the connector 52 is movably connected to the fourth side plate 44 of the second hinge arm 40 and does not rotate relative to the fourth side plate 44, the second hinge arm 40 can only rotate in one direction (the second hinge arm 40 will also drive the connector 52 to rotate in one direction within the one-way rotating part 51). This allows the user to only flip the tabletop body 20 upwards, and after releasing the tabletop body 20, the tabletop body 20 will not flip downwards due to the cooperation of the connector 52 and the one-way rotating part 51.

[0047] When the user pulls the connector 52 out of the one-way rotating part 51, the connector 52 is still connected to the fourth side plate 44 of the second hinge arm 40 in a movable but non-rotating manner. At this time, the one-way rotating assembly 50 releases the restriction on the fourth side plate 44, so that the user can flip the table body 20 downward.

[0048] In one embodiment, the connector 52 includes a first connecting portion 521 and a second connecting portion 522 connected together. The first connecting portion 521 can cooperate with the unidirectional rotating member 51. The second connecting portion 522 cooperates with the fourth side plate 44 of the second hinge arm 40 so that the connector 52 and the second hinge arm 40 do not rotate relative to each other.

[0049] In this embodiment, the first connecting part 521 has a cylindrical structure, while the cross-section of the second connecting part 522 is non-circular, and the outer diameter of the first connecting part 521 is larger than the diameter of the circumscribed circle of the second connecting part 522. During the process of inserting the first connecting part 521 into the unidirectional rotating member 51, it will push against each needle roller inside the unidirectional rotating member 51, thereby achieving a tight grip on the first connecting part 521. In this way, the first hinge arm 30 and the second hinge arm 40 can only perform unidirectional rotation.

[0050] The second side plate 34 is provided with a first through hole for the second connecting part 522 to pass through, and the fourth side plate 44 is provided with a second through hole that cooperates with the second connecting part 522. Since the cross-section of the second connecting part 522 is not circular, the second connecting part 522 slides with the second through hole without relative rotation during the process of the user pulling out or inserting the connecting part 52. Therefore, when the first connecting part 521 cooperates with the one-way rotating part 51, the user will drive the first connecting part 521 to perform a one-way rotation action within the one-way rotating part 51 during the process of rotating the second hinge arm 40 in one direction.

[0051] In one embodiment, the second connecting portion 522 is provided with a limiting cap 523 at one end away from the first connecting portion 521. The one-way rotating assembly 50 also includes a second elastic member 53, which is sleeved outside the second connecting portion 522. The two ends of the second elastic member 53 abut against the limiting cap 523 and the second hinge arm 40, respectively. The second elastic member 53 is used to apply elastic force to the connecting member 52 to prevent the first connecting portion 521 from disengaging from the one-way rotating assembly 51.

[0052] The second elastic element 53 is a spring. When the user pulls out the first connecting part 521, the limiting cap 523 moves towards the fourth side plate 44, which in turn engages with the fourth side plate 44 to compress the second elastic element 53. When the first connecting part 521 is released, the second elastic element 53 will quickly push the limiting cap 523, thereby causing the first connecting part 521 to re-engage in the one-way rotating part 51, thus achieving the engagement between the first connecting part 521 and the one-way rotating part 51.

[0053] In one embodiment, a third connecting portion 524 is provided between the first connecting portion 521 and the second connecting portion 522. The third connecting portion 524 is tapered, with its larger diameter end connected to the first connecting portion 521 and its smaller diameter end connected to the second connecting portion 522. The design of the third connecting portion 524 facilitates the quick insertion of the first connecting portion 521 into the unidirectional rotating member 51, ensuring a rapid connection between the first connecting portion 521 and the unidirectional rotating member 51.

[0054] In one embodiment, a fourth connecting portion 525 is provided between the third connecting portion 524 and the second connecting portion 522. The outer diameter of the fourth connecting portion 525 is equal to the diameter of the circumcircle of the second connecting portion 522. The fourth connecting portion 525 is movably connected to the first hinge arm 30.

[0055] The fourth connecting part 525 has a cylindrical structure, and the first through hole is a circular hole. The outer diameter of the fourth connecting part 525 is equal to the inner diameter of the first through hole. The fourth connecting part 525 is rotatably engaged with the first through hole and can disengage from the first through hole. Since the outer diameter of the fourth connecting part 525 is equal to the diameter of the circumscribed circle of the second connecting part 522, the second connecting part 522 will also move into the first through hole during the process of pulling the first connecting part 521 out of the one-way rotating member 51. In this way, the coaxiality of the first through hole and the second through hole can still be maintained during the movement of the operating rod.

[0056] In one embodiment, the unidirectional rotation assembly 50 further includes a pull cord 54 connected to the first connecting part 521. A support frame 90 is provided on the first hinge arm 30, and the pull cord 54 passes through the support frame 90. A limiting head 55 is provided on the pull cord 54. When the first connecting part 521 is engaged within the unidirectional rotation component 51, the limiting head 55 abuts against the side of the support frame 90 opposite to the first connecting part 521. The pull cord 54 is taut, so when the user pulls the pull cord 54, it directly pulls the connecting part 52, thereby driving the first connecting part 521 to disengage from the unidirectional rotation component 51, thus enabling the tabletop body 20 to freely rotate.

[0057] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A desk with adjustable desk board inclination, characterized in that, include: Table frame (10); The tabletop body (20) is hinged to the table frame (10); The first hinge arm (30) has a first end (31) and a second end (32), the first end (31) being hinged to the table frame (10); The second hinge arm (40) has a third end (41) and a fourth end (42), the third end (41) being hinged to the table body (20), and the fourth end (42) being hinged to the second end (32); A one-way rotating component (50) is used to restrict the rotation state of the second hinge arm (40) so that the table body (20) can only perform an upward flipping action, or to release the restriction on the second hinge arm (40) so that the table body (20) can perform a free flipping action. as well as A power assist component (60) is provided to assist the rotation of the second hinge arm (40) during the upward flipping of the table body (20); The assist component (60) includes a third hinge arm (61) and a first elastic element (62). The third hinge arm (61) has a fifth end and a sixth end. The fifth end is slidably engaged with the first hinge arm (30). The sliding direction of the fifth end is parallel to the length direction of the first hinge arm (30). The sixth end is hinged with the second hinge arm (40). The first elastic element (62) is used to apply elastic force to the fifth end so that the fifth end has a tendency to move toward the second end (32).

2. The desk with adjustable desk board inclination according to claim 1, characterized in that, The first hinge arm (30) is provided with a guide hole (35), which extends along the length direction of the first hinge arm (30). The third hinge arm (61) is provided with a first pin (611), which slides in the guide hole (35). The first hinge arm (30) is provided with a second pin (36), the second pin (36) is close to the second end (32), and the first elastic member (62) connects the first pin (611) and the second pin (36) respectively.

3. The desk according to claim 1, wherein the desk board is adjustable in inclination. It also includes a first mounting base (70) and a second mounting base (80). The first mounting base (70) is disposed on the table frame (10) and hinged to the first end (31); the second mounting base (80) is disposed on the table body (20) and hinged to the third end (41).

4. The height adjustable desk of any one of claims 1-3, wherein the desk board is adjustable in an angle. The unidirectional rotation assembly (50) includes a unidirectional rotating component (51) and a connecting component (52). The unidirectional rotating component (51) is disposed on the first hinge arm (30) and located at the second end (32). The connecting component (52) passes through the unidirectional rotating component (51). The connecting component (52) can be connected to the unidirectional rotating component (51) and can move along the axial direction of the unidirectional rotating component (51). The connecting component (52) is movably connected to the second hinge arm (40) and has no relative rotation with the second hinge arm (40). When the connecting piece (52) is connected with the one-way rotating piece (51), the second hinged arm (40) can make one-way rotating action; when the connecting piece (52) is disconnected with the one-way rotating piece (51), the second hinged arm (40) can make free rotating action.

5. The desk according to claim 4, wherein the desk board is adjustable in inclination. The connecting piece (52) comprises a first connecting part (521) and a second connecting part (522) connected with each other, the first connecting part (521) can be matched with the one-way rotating piece (51); the second connecting part (522) is matched with the second hinged arm (40), so that the connecting piece (52) and the second hinged arm (40) have no relative rotation.

6. The desk according to claim 5, wherein the desk board is adjustable in inclination. The second connecting part (522) is provided with a limiting cap (523) at one end away from the first connecting part (521), the one-way rotating assembly (50) further comprises a second elastic piece (53), the second elastic piece (53) is sleeved outside the second connecting part (522), two ends of the second elastic piece (53) are respectively abutted against the limiting cap (523) and the second hinged arm (40), the second elastic piece (53) is used for exerting elastic force on the connecting piece (52), so as to prevent the first connecting part (521) from being disconnected with the one-way rotating piece (51).

7. The desk according to claim 6, wherein the desk board is adjustable in inclination. The first connecting part (521) and the second connecting part (522) are provided with a third connecting part (524) therebetween, the third connecting part (524) is tapered, a large-diameter end of the third connecting part (524) is connected with the first connecting part (521), and a small-diameter end of the third connecting part (524) is connected with the second connecting part (522).

8. The desk according to claim 7, wherein the desk board is adjustable in inclination. The third connecting part (524) and the second connecting part (522) are provided with a fourth connecting part (525) therebetween, an outer diameter of the fourth connecting part (525) is equal to a diameter of a circle circumscribed to the second connecting part (522), and the fourth connecting part (525) is movably connected with the first hinged arm (30).

9. The desk according to claim 5, wherein, The one-way rotating assembly (50) further comprises a pull rope (54), the pull rope (54) is connected with the first connecting part (521).

10. The desk according to claim 9, wherein the desk board is adjustable in inclination. The first hinged arm (30) is provided with a support frame (90), the pull rope (54) penetrates through the support frame (90), the pull rope (54) is provided with a limiting head (55), and the limiting head (55) can abut against one side of the support frame (90) away from the first connecting part (521).

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