Front-mounted device for driving learning table to ascend and descend
By designing a front-mounted device to drive the height adjustment of the study desk, using a dual-axis motor and clutch, the height of the study desk can be adjusted both electrically and manually, solving the problem of the single height adjustment method of existing study desks and improving the adaptability and health of the study desk.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-24
AI Technical Summary
The existing study desks have only one height adjustment method, which cannot adapt to the height changes of students of different ages, thus affecting students' physical health.
Design a front-mounted device for driving the height adjustment of a study desk. The height of the study desk can be adjusted electrically or manually. The device uses a dual-axis motor, a first clutch, and a second clutch to achieve electric and manual control of the height adjustment of the desk legs.
The height adjustment options for the study desks have been expanded to accommodate the height changes of students of different ages, improving both comfort and health.
Smart Images
Figure CN224037202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of study desk technology, specifically to a front-mounted device for driving the lifting and lowering of a study desk. Background Technology
[0002] With the continuous advancement of modern educational concepts, the design of study desks has gradually evolved from single-function to multi-functional and intelligent. Traditional study desks have a fixed height, which cannot adapt to the height changes of students of different ages. Long-term use may lead to poor posture and affect students' physical health.
[0003] Currently, height-adjustable study desks mainly rely on height-adjustable legs for height adjustment. The height-adjustable legs mainly consist of upper legs, lower legs, a transmission rod, and a lead screw and nut lifting assembly. Through the gearbox of the transmission rod and the lead screw and nut lifting assembly, the rotational motion of the transmission rod can be converted into the rotational motion of the lead screw, thereby realizing the height adjustment of the upper leg relative to the lower leg.
[0004] However, most height-adjustable study desks on the market currently only have one of the following functions: manual height adjustment or electric height adjustment. The adjustment methods are relatively limited. Utility Model Content
[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a front-mounted device for driving the height adjustment of a study desk, which can achieve the adjustment of the desk height through electric or manual means.
[0006] To achieve the above objectives, this utility model provides a front-mounted device for driving the height adjustment of a study desk, comprising: a mounting base; a drive motor mounted on the mounting base, the drive motor being a dual-axis motor, the output shaft of the drive motor including a first output end and a second output end, the second output end being hollow; a first clutch disposed within the second output end, the first clutch not rotating relative to the second output end; a crank handle rotatably engaged on the mounting base, the crank handle being movable relative to the mounting base along its own rotation axis; and a second clutch disposed on the crank handle and extending into the second output end, the rotation axis of the second clutch coinciding with the rotation axis of the crank handle, the second clutch being movable relative to the first clutch along its own rotation axis, and being connectable or disconnectable from the first clutch.
[0007] When the second clutch is connected to the first clutch, the crank handle can rotate relative to the mounting base and drive the second output end and the first output end to rotate; when the second clutch is disengaged from the first clutch, the second output end and the first output end can rotate relative to the crank handle.
[0008] Preferably, the first clutch has a first through hole and at least one first limiting groove, the second clutch extends into the second output end after passing through the first through hole, and the second clutch has at least one first protrusion that can cooperate with the first limiting groove.
[0009] Preferably, the first clutch has a hollow cylindrical structure, and the first clutch is provided with at least one second protrusion. The second output end is provided with at least one second limiting groove, and the second protrusion is embedded in the second limiting groove.
[0010] Preferably, the mounting base has a groove, and the crank handle can be inserted into or detached from the groove.
[0011] Preferably, the mounting base is provided with a second through hole, which communicates with the groove, and the crank handle is provided with a connecting post, which is connected to the second clutch and is rotatably engaged in the second through hole.
[0012] Preferably, the mounting base has a receiving cavity, the drive motor is disposed in the receiving cavity, and the second through hole connects the groove and the receiving cavity respectively.
[0013] Preferably, the mounting base is provided with a button.
[0014] The beneficial effects of this utility model are:
[0015] This utility model discloses a front-mounted device for driving the height adjustment of a study desk. It utilizes a first clutch and a second clutch mechanism. When the user operates a crank to disengage the second clutch from the first clutch, the drive motor rotates the connected transmission rod, thus electrically controlling the height adjustment of the desk legs. Alternatively, when the user operates the crank to engage the second clutch with the first clutch, rotating the crank rotates the output shaft of the drive motor and the transmission rod, achieving manual control of the desk leg height adjustment. This allows for both electric and manual height adjustment of the study desk, enriching the methods of height adjustment and making it suitable for a wide range of applications. Attached Figure Description
[0016] 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.
[0017] Figure 1 This is a schematic diagram of the structure of a front-mounted device for driving the height adjustment of a study desk according to an embodiment of the present invention;
[0018] Figure 2 This is a schematic diagram of the mounting base.
[0019] Figure 3 This is a schematic diagram of the drive motor.
[0020] Figure 4 This is a schematic diagram of the first clutch component;
[0021] Figure 5 This is a schematic diagram of the structure in which the first clutch element is installed inside the second output terminal;
[0022] Figure 6 This is a schematic diagram of the crank handle.
[0023] Figure 7 A schematic diagram showing the structure of the second clutch component engaging with the first clutch component;
[0024] Figure 8 A cross-sectional schematic diagram showing the engagement of the drive motor, the first clutch, the second clutch, and the crank handle;
[0025] Figure 9 A structural schematic diagram of the mounting bracket from another perspective;
[0026] Figure 10 A schematic diagram of the structure in which the crank handle is embedded in the groove;
[0027] Figure 11 A schematic diagram of the structure for the engagement of the drive motor, bushing, transmission rod, and lead screw nut lifting assembly;
[0028] Figure label:
[0029] 10. Mounting base; 11. Groove; 12. Second through hole; 13. Receiving cavity; 14. Button; 20. Drive motor; 21. First output end; 22. Second output end; 23. Second limiting groove; 30. First clutch; 31. First through hole; 32. First limiting groove; 33. Second protrusion; 40. Handle; 41. Connecting column; 50. Second clutch; 51. First protrusion; 60. Bushing; 70. Transmission rod; 80. Lead screw and nut lifting assembly. Detailed Implementation
[0030] 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.
[0031] 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.
[0032] 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.
[0033] 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.
[0034] 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.
[0035] 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," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.
[0036] like Figure 1-11As shown, in one embodiment of this utility model, a front-mounted device for driving the height adjustment of a study desk is provided, including a mounting base 10, a drive motor 20, a first clutch 30, a crank handle 40, and a second clutch 50. The mounting base 10 is used to fix the study desk to the desk frame, and the drive motor 20 is fixed to the mounting base 10. The drive motor 20 is a dual-axis motor, and the output shaft of the drive motor 20 includes a first output end 21 and a second output end 22. The first output end 21 and the second output end 22 extend from both ends of the drive motor 20, respectively. Both the second output end 22 and the first output end 21 are hollow structures, that is, the drive motor 20 adopts a hollow shaft reduction motor. The transmission rod 70 is connected to the first output end 21 through a bushing 60.
[0037] The first clutch 30 is disposed within the second output end 22, and there is no relative rotation between the first clutch 30 and the second output end 22. The crank handle 40 is rotatably fitted onto the mounting base 10, and the crank handle 40 can move relative to the mounting base 10 along its own axis of rotation. The second clutch 50 is fixed to the crank handle 40 and extends into the second output end 22, and the axis of rotation of the second clutch 50 coincides with the axis of rotation of the crank handle 40. The second clutch 50 can move relative to the first clutch 30 along its own axis of rotation, and can be connected to or disconnected from the first clutch 30.
[0038] When the second clutch 50 is connected to the first clutch 30, the crank 40 can rotate relative to the mounting base 10 and drive the second output end 22 and the first output end 21 to rotate. By turning the crank 40, the output shaft of the drive motor 20 and the transmission rod 70 can be driven to rotate. The transmission rod 70 cooperates with the gearbox of the lead screw nut lifting assembly 80, thereby realizing the lifting of the upper table leg relative to the lower table leg, and thus realizing the manual control of the lifting of the table leg.
[0039] When the second clutch 50 is disengaged from the first clutch 30, the second output end 22 and the first output end 21 can rotate relative to the crank handle 40. The drive motor 20 can then drive the transmission rod 70 connected to it to rotate. The transmission rod 70 cooperates with the gearbox of the lead screw nut lifting assembly 80 to realize the lifting of the upper table leg relative to the lower table leg, thereby realizing the electric control of the lifting of the table leg.
[0040] This embodiment discloses a front-mounted device for driving the height adjustment of a study desk. It utilizes a first clutch 30 and a second clutch 50 in a coordinated manner. When the user operates the crank 40 to disengage the second clutch 50 from the first clutch 30, the drive motor 20 can rotate the connected transmission rod 70, thereby achieving electric control of the desk leg height adjustment. When the user operates the crank 40 to engage the second clutch 50 with the first clutch 30, rotating the crank 40 will rotate the output shaft of the drive motor 20 and the transmission rod 70, thus achieving manual control of the desk leg height adjustment. In this way, the desk height can be adjusted electrically or manually, enriching the methods for adjusting the desk height and making it suitable for a wide range of applications.
[0041] In one embodiment, the first clutch 30 is provided with a first through hole 31 and two first limiting grooves 32, and the axis of the first through hole 31 coincides with the rotation axis of the crank 40. The second clutch 50 has a cylindrical structure, and after passing through the first through hole 31, the second clutch 50 extends into the second output end 22. The second clutch 50 is provided with two first protrusions 51, which can cooperate with the first limiting grooves 32.
[0042] When the user pushes the crank handle 40 to move along its own rotation axis toward the first output end 21, the crank handle 40 will cause the first protrusion 51 on the second clutch 50 to disengage from the first limiting groove 32 of the first clutch 30. In this way, when the output shaft of the drive motor 20 rotates, the output shaft will not drive the crank handle 40 to rotate.
[0043] When the user pulls the crank handle 40 along its own rotation axis toward the second output end 22, the crank handle 40 will cause the first protrusion 51 on the second clutch 50 to engage with the first limiting groove 32 of the first clutch 30. Thus, when the user turns the crank handle 40, the first clutch 30 and the second clutch 50, in cooperation, can drive the output shaft of the drive motor 20, the bushing 60, and the transmission rod 70 to rotate. Of course, by reasonably setting the number of rotations of the drive motor 20, such as ensuring that the drive motor 20 rotates a full circle each time, it can be guaranteed that the first limiting groove 32 and the first protrusion 51 are always aligned.
[0044] In one embodiment, the first clutch 30 has a hollow cylindrical structure and two second protrusions 33. The second output end 22 has two second limiting grooves 23, and the second protrusions 33 are embedded in the second limiting grooves 23. This structural design facilitates the assembly of the first clutch 30 into the second output end 22. At the same time, the cooperation between the second protrusions 33 and the second limiting grooves 23 ensures that there is no relative rotation between the first clutch 30 and the second output end 22.
[0045] In one embodiment, the mounting base 10 is provided with a groove 11, into which the crank handle 40 can be inserted or removed. When the crank handle 40 is fully inserted into the groove 11, the crank handle 40 cannot be rotated, and at this time, the first protrusion 51 is completely disengaged from the first limiting groove 32. When the crank handle 40 is completely disengaged from the groove 11, the first protrusion 51 is inserted into the first limiting groove 32, at which point the user can rotate the crank handle 40. Therefore, the design of the groove 11 can limit the crank handle 40 during the electric control lifting process.
[0046] In one embodiment, the mounting base 10 is provided with a second through hole 12, which communicates with the groove 11. The crank handle 40 is provided with a connecting post 41, which is connected to the second clutch 50. The connecting post 41 is rotatably fitted within the second through hole 12. The mounting base 10 is provided with a receiving cavity 13, and the drive motor 20 is fixed within the receiving cavity 13. The second through hole 12 connects the groove 11 and the receiving cavity 13 respectively.
[0047] In one embodiment, the mounting base 10 is provided with a button 14, which is electrically connected to the control board of the drive motor 20. By pressing the button 14, the drive motor 20 can be started or stopped.
[0048] 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.
[0049] 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 front-mounted device for driving the height adjustment of a study desk, characterized in that, include: Mounting base (10); A drive motor (20) is mounted on the mounting base (10). The drive motor (20) is a dual-axis motor. The output shaft of the drive motor (20) includes a first output end (21) and a second output end (22). The second output end (22) has a hollow structure. The first clutch (30) is located inside the second output terminal (22), and the first clutch (30) and the second output terminal (22) do not rotate relative to each other; A crank handle (40) is rotatably fitted on the mounting base (10), and the crank handle (40) can move relative to the mounting base (10) along its own axis of rotation; as well as The second clutch (50) is provided on the crank handle (40) and extends into the second output end (22). The rotation axis of the second clutch (50) coincides with the rotation axis of the crank handle (40). The second clutch (50) can move relative to the first clutch (30) along its own rotation axis and can be connected or separated from the first clutch (30). When the second clutch (50) is connected to the first clutch (30), the crank (40) can rotate relative to the mounting base (10) and drive the second output end (22) and the first output end (21) to rotate; When the second clutch (50) is disengaged from the first clutch (30), the second output terminal (22) and the first output terminal (21) can rotate relative to the crank handle (40).
2. The front-mounted device for driving the height adjustment of a study desk according to claim 1, characterized in that, The first clutch (30) is provided with a first through hole (31) and at least one first limiting groove (32). The second clutch (50) passes through the first through hole (31) and extends into the second output end (22). The second clutch (50) is provided with at least one first protrusion (51), which can cooperate with the first limiting groove (32).
3. The front-mounted device for driving the height adjustment of a study desk according to claim 2, characterized in that, The first clutch (30) has a hollow cylindrical structure. The first clutch (30) is provided with at least one second protrusion (33). The second output end (22) is provided with at least one second limiting groove (23). The second protrusion (33) is embedded in the second limiting groove (23).
4. The front-mounted device for driving the height adjustment of a study desk according to any one of claims 1-3, characterized in that, The mounting base (10) is provided with a groove (11), and the crank (40) can be inserted into or removed from the groove (11).
5. The front-mounted device for driving the height adjustment of a study desk according to claim 4, characterized in that, The mounting base (10) is provided with a second through hole (12), which communicates with the groove (11). The crank handle (40) is provided with a connecting post (41), which is connected to the second clutch (50). The connecting post (41) is rotatably fitted in the second through hole (12).
6. The front-mounted device for driving the height adjustment of a study desk according to claim 5, characterized in that, The mounting base (10) is provided with a receiving cavity (13), the drive motor (20) is located in the receiving cavity (13), and the second through hole (12) connects the groove (11) and the receiving cavity (13) respectively.
7. The front-mounted device for driving the height adjustment of a study desk according to claim 1, characterized in that, The mounting base (10) is provided with a button (14).