Automatic lifting knob device
The automatic lifting knob device addresses the instability of traditional return springs by using a tension spring and cam mechanism for controlled knob positioning, enhancing usability and stability.
Patent Information
- Application Number
- CN202421110686.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Traditional button structures in mechanical equipment face issues with return springs that either require excessive force for operation or fatigue over time, leading to instability and poor functionality.
An automatic lifting knob device featuring a tension spring and lifting assembly, where the tension spring pulls the knob assembly downward and the lifting assembly, comprising a cam and rotating member, ensures the knob returns to a predetermined position through controlled rotation of the cam, aided by sensing members for precise positioning.
The device provides stable and effortless operation by reducing the force required to press the knob and maintaining its position, ensuring consistent functionality over time.
Smart Images
Figure CN222213277U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switch devices, in particular to an automatic lifting knob device. Background Art
[0002] The button structure is a commonly used switch structure in mechanical equipment. The user can control the equipment by pressing the button. The commonly used button structure usually has a return spring installed under the button. When the user presses the button, the return spring will be compressed. When the button is released, the return spring can push the button pressed down back to the predetermined position. However, in actual use, if a return spring with a larger elastic force is used, it will make it too difficult for the user to press the button down. If a return spring with a smaller elastic force is used, the return spring will become fatigued during repeated use, resulting in the return spring being unable to push the button back to the predetermined position, and the stability is poor, affecting the normal use of the button. Utility Model Content
[0003] To this end, the utility model provides an automatic lifting knob device, which solves the technical problem that a reset spring may become fatigued during repeated use, resulting in the reset spring being unable to push the button back to a predetermined position and having poor stability.
[0004] To achieve the above-mentioned purpose, the utility model specifically provides the following technical solutions: an automatic lifting knob device, comprising: a shell, provided with a accommodating cavity and an opening; the opening is arranged at the top end of the shell and is connected to the accommodating cavity; a knob assembly is movably arranged at the opening up and down; a tension spring is arranged in the accommodating cavity; the two ends of the tension spring are respectively connected to the bottom end of the knob assembly and the shell, and the tension spring has an elastic restoring force for pulling the knob assembly to move downward; a lifting assembly, comprising a cam and a rotating member; the cam abuts against the lower end of the knob assembly; the rotating member is connected to the cam, and can drive the cam to rotate so that the cam pushes the knob assembly upward.
[0005] Optionally, a first sensing member and a sensing structure are also included; the sensing structure is arranged on the cam and is located outside the rotation axis of the cam, the first sensing member is arranged in the accommodating cavity and is electrically connected to the rotating member, the first sensing member can sense the position of the sensing structure and can transmit the sensing result to the rotating member in the form of an electrical signal.
[0006] Optionally, a second sensing member is also included, and the second sensing member and the first sensing member are symmetrically arranged relative to the rotation axis of the cam, and the second sensing member is arranged in the accommodating cavity and electrically connected to the rotating member; the second sensing member can sense the position of the sensing structure and can transmit the sensing structure to the rotating member in the form of an electrical signal.
[0007] Optionally, both the first induction element and the second induction element are Hall sensors, and the induction structure is an induction magnet.
[0008] Optionally, the rotating member includes a driving structure and a rotating shaft, a rotating hole is provided on one side of the cam, the rotating shaft passes through the rotating hole, and the driving structure is connected to the rotating shaft and can drive the rotating shaft to rotate.
[0009] Optionally, a limiting groove is provided in the accommodating cavity; the cam is provided with a rotating protrusion, the rotating protrusion and the rotating hole are respectively arranged on two opposite sides of the cam, and the central axis of the rotating protrusion is coaxially arranged with the central axis of the rotating hole; the cross-section of the rotating protrusion is circular, and the protrusion can be rotatably arranged in the limiting groove.
[0010] Optionally, the knob assembly includes a guide bracket and a knob member; the guide bracket can be slidably arranged in the accommodating cavity up and down, the peripheral side of the guide bracket abuts against the inner wall of the accommodating cavity, the knob member is arranged at the upper end of the guide bracket, the cam abuts against the lower end of the guide bracket, and one end of the tension spring is connected to the guide bracket.
[0011] Optionally, a groove is provided at the lower end of the guide bracket, and the groove is arranged opposite to the cam.
[0012] Optionally, the width of the groove is equal to the thickness of the cam.
[0013] Optionally, a plurality of tension springs are provided.
[0014] Compared with the prior art, the utility model has the following beneficial effects: the knob assembly is arranged at the opening, the lower end of the knob assembly abuts against the cam, and the two ends of the tension spring are respectively connected to the bottom end of the knob assembly and the shell to limit the position of the knob assembly and prevent the tension spring from falling from the opening; the rotating member drives the cam to rotate to push the knob assembly to move upward until the end of the cam away from the rotation axis of the cam abuts against the lower end of the knob assembly, so that the knob assembly moves upward to a predetermined position, and the position of the cam can be maintained by the driving member, and the position of the knob assembly can be maintained; and because the tension spring has an elastic restoring force that pulls the knob assembly to move downward, and the knob assembly can be abutted against the cam to be limited by the cam The position of the knob assembly; when the user presses the knob assembly downward, the knob assembly moves downward, and the knob assembly pushes the cam to rotate the cam. The difficulty of the user pressing the knob assembly downward can be reduced by setting a tension spring; and when the user releases the knob assembly, the rotating member continuously drives the cam to rotate to push the cam upward, so as to push the knob assembly upward until the end of the cam away from the rotation axis of the cam abuts against the lower end of the knob assembly again, so that the knob assembly moves upward to the predetermined position again; compared with the traditional return spring, the automatic lifting knob device has better stability in pushing the knob assembly upward to the predetermined position by the cam of the lifting assembly, and can ensure the normal use of the knob assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0016] Figure 1 A schematic diagram of the structure of an automatic lifting knob device provided by an embodiment of the utility model;
[0017] Figure 2 A schematic diagram of the structure of a housing of an automatic lifting knob device provided by an embodiment of the utility model;
[0018] Figure 3 A schematic structural diagram of a housing, a first sensing element, a second sensing element, a sensing structure, and a lifting assembly of an automatic lifting knob device provided in an embodiment of the utility model;
[0019] Figure 4 A schematic diagram of the structure of a cam and a sensing structure of an automatic lifting knob device provided by an embodiment of the utility model;
[0020] Figure 5 for Figure 4 A structural schematic diagram of a cam and a sensing structure of an automatic lifting knob device provided by an embodiment of the utility model from another perspective;
[0021] Figure 6 A cross-sectional view of a knob assembly of an automatic lifting knob device provided by an embodiment of the utility model in an upward moving state;
[0022] Figure 7 for Figure 6 A cross-sectional view from another perspective of a knob assembly of an automatic lifting knob device provided by an embodiment of the utility model in an upward state;
[0023] Figure 8 A cross-sectional view of a knob assembly of an automatic lifting knob device provided by an embodiment of the utility model in a pressed-down state.
[0024] Reference numerals:
[0025] Shell 100; accommodating cavity 110; limiting groove 111; opening 120; knob assembly 200; guide bracket 210; groove 211; knob member 220; tension spring 300; lifting assembly 400; cam 410; rotating hole 411; rotating protrusion 412; rotating member 420; rotating shaft 421; driving structure 422; first sensing member 500; second sensing member 510; sensing structure 600. DETAILED DESCRIPTION
[0026] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.
[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0029] Reference below Figures 1 to 8The automatic lifting knob device according to the embodiment of the utility model is described.
[0030] According to the automatic lifting knob device of the embodiment of the utility model, the automatic lifting knob device includes a housing 100, a knob assembly 200, a tension spring 300 and a lifting assembly 400; the housing 100 is provided with a receiving cavity 110 and an opening 120; the opening 120 is provided at the top of the housing 100 and is connected to the receiving cavity 110; the knob assembly 200 is provided at the opening 120 so as to be movable up and down; the tension spring 300 is provided in the receiving cavity 110 ... The two ends of 00 are respectively connected to the bottom end of the knob assembly 200 and the housing 100, and the tension spring 300 has an elastic restoring force for pulling the knob assembly 200 to move downward; the lifting assembly 400 includes a cam 410 and a rotating member 420; the cam 410 abuts against the lower end of the knob assembly 200; the rotating member 420 is connected to the cam 410, and can drive the cam 410 to rotate so that the cam 410 pushes the knob assembly 200 upward.
[0031] The knob assembly 200 is arranged at the opening 120, and the lower end of the knob assembly 200 abuts against the cam 410, and the two ends of the tension spring 300 are respectively connected to the bottom end of the knob assembly 200 and the housing 100 to limit the position of the knob assembly 200 and prevent the tension spring 300 from falling from the opening 120; the rotating member 420 drives the cam 410 to rotate to push the knob assembly 200 to move upward until one end of the cam 410 away from the rotation axis of the cam 410 abuts against the lower end of the knob assembly 200, so that the knob assembly 200 moves upward to a predetermined position, and the position of the cam 410 can be maintained by the driving member, and the position of the knob assembly 200 can be maintained; and because the tension spring 300 has an elastic restoring force that pulls the knob assembly 200 to move downward, and the knob assembly 200 can be abutted against the cam 410, so as to limit the knob assembly 200 through the cam 410 position; when the user presses the knob assembly 200 downward, the knob assembly 200 moves downward, and the knob assembly 200 pushes the cam 410 to rotate the cam 410. By setting the tension spring 300, the difficulty of the user pressing the knob assembly 200 downward can be reduced; and when the user releases the knob assembly 200, the rotating member 420 continues to drive the cam 410 to rotate to push the cam 410 to move upward, so as to push the knob assembly 200 upward until the end of the cam 410 away from the rotation axis of the cam 410 abuts against the lower end of the knob assembly 200 again, so that the knob assembly 200 moves upward to the predetermined position again; compared with the traditional return spring, the automatic lifting knob device has better stability in pushing the knob assembly 200 to the predetermined position by the cam 410 of the lifting assembly 400, and can ensure the normal use of the knob assembly 200.
[0032] Specifically, the predetermined position of the knob assembly 200 is the highest position of the knob assembly 200 ; the outer contour surface of the cam 410 abuts against the knob assembly 200 .
[0033] Reference Figure 3 and Figure 4 It can be understood that it also includes a first sensing member 500 and a sensing structure 600; the sensing structure 600 is arranged on the cam 410 and is located outside the rotation axis of the cam 410. The first sensing member 500 is arranged in the accommodating cavity 110 and is electrically connected to the rotating member 420. The first sensing member 500 can sense the position of the sensing structure 600 and can transmit the sensing result to the rotating member 420 in the form of an electrical signal.
[0034] The rotating member 420 can drive the cam 410 to rotate around the rotation axis of the cam 410. The sensing structure 600 is set at a position outside the rotation axis of the cam 410, so that the rotation of the cam 410 can drive the sensing structure 600 to rotate around the rotation axis of the cam 410, so that the position of the sensing structure 600 changes. The first sensing member 500 can sense the position of the sensing structure 600 to determine the state of the cam 410. The first sensing member 500 can send the sensing structure 600 to the rotating member 420. The rotating member 420 can control the rotation of the cam 410 and stop driving the cam 410 to rotate according to the sensing result to control the position of the knob assembly 200.
[0035] Reference Figures 6 to 8 Specifically, the knob assembly 200 is pressed down, the cam 410 rotates until the end of the cam 410 close to the rotation axis abuts against the knob assembly 200, the sensing structure 600 moves to the side away from the first sensing member 500, the knob assembly 200 moves up, the cam 410 rotates until the end of the cam 410 away from the rotation axis abuts against the knob assembly 200, and the sensing structure 600 moves to the side close to the first sensing member 500.
[0036] Reference Figure 3 and Figure 4 It can be understood that it also includes a second sensing member 510. The second sensing member 510 and the first sensing member 500 are symmetrically arranged relative to the rotation axis of the cam 410. The second sensing member 510 is arranged in the accommodating cavity 110 and is electrically connected to the rotating member 420. The second sensing member can sense the position of the sensing structure 600 and can transmit the sensing structure 600 to the rotating member 420 in the form of an electrical signal.
[0037] The rotating member 420 can drive the cam 410 to rotate around the rotation axis of the cam 410. The sensing structure 600 is set at a position outside the rotation axis of the cam 410, so that the rotation of the cam 410 can drive the sensing structure 600 to rotate around the rotation axis of the cam 410, so that the position of the sensing structure 600 changes. The second sensing member 510 can sense the position of the sensing structure 600 to determine the state of the cam 410. The second sensing member 510 can send the sensing structure 600 to the rotating member 420. The rotating member 420 can control the rotation of the cam 410 and stop driving the cam 410 to rotate according to the sensing result to control the position of the knob assembly 200.
[0038] By symmetrically arranging the second sensing element 510 and the first sensing element 500 on both sides of the rotation axis of the cam 410 , the accuracy of the sensing result can be improved.
[0039] Reference Figures 6 to 8 Specifically, the knob assembly 200 is pressed downward, the cam 410 rotates until the end of the cam 410 close to the rotation axis abuts against the knob assembly 200, the sensing structure 600 moves to the side close to the second sensing member 510, the knob assembly 200 moves upward, the cam 410 rotates until the end of the cam 410 away from the rotation axis abuts against the knob assembly 200, and the sensing structure 600 moves to the side away from the second sensing member 510.
[0040] It is understandable that the first sensing element 500 and the second sensing element 510 are both Hall sensors, the sensing structure 600 is an induction magnet, and the first sensing element 500 and the second sensing element 510 are used to sense the magnetic flux size of the induction magnet to determine the distance between the first sensing element 500 and the second sensing element 510.
[0041] Reference Figures 6 to 8Specifically, the knob assembly 200 is pressed down, the cam 410 rotates until the end of the cam 410 close to the rotation axis abuts against the knob assembly 200, the sensing structure 600 moves to the side away from the first sensing member 500, and moves to the side close to the second sensing member 510, the magnetic flux of the sensing magnet that can be sensed by the first sensing member 500 is small, and the magnetic flux of the sensing magnet that can be sensed by the second sensing member 510 is large, when the first sensing member 500 senses that the magnetic flux is a first predetermined value, when the second sensing member 510 senses that the magnetic flux is a second predetermined value, the knob assembly 200 is located at the lowest point, wherein the first predetermined value is greater than the second predetermined value, and the rotating member 420 continues to rotate the cam 410; the knob assembly 200 moves up, and the cam 4 10 rotates until the end of the cam 410 away from the rotation axis abuts against the knob assembly 200, the sensing structure 600 moves to the side close to the first sensing member 500, and moves to the side away from the second sensing member 510, the magnetic flux of the induction magnet that can be sensed by the first sensing member 500 is larger, and the magnetic flux of the induction magnet that can be sensed by the second sensing member 510 is smaller, when the first sensing member 500 senses that the magnetic flux is a third predetermined value, and the second sensing member 510 senses that the magnetic flux is a fourth predetermined value, the knob assembly 200 is at the highest point, wherein the fourth predetermined value is greater than the third predetermined value, the rotating member 420 stops driving the cam 410, and keeps the cam 410 in position so that the knob assembly 200 can continue to be at the highest point.
[0042] Reference Figure 3 and Figure 5 It can be understood that the rotating member 420 includes a driving structure 422 and a rotating shaft 421. A rotating hole 411 is provided on one side of the cam 410. The rotating shaft 421 passes through the rotating hole 411. The driving structure 422 is connected to the rotating shaft 421 and can drive the rotating shaft 421 to rotate.
[0043] The driving structure 422 drives the rotating shaft 421 to rotate so as to drive the cam 410 to rotate, and since the cam 410 is connected to the rotating shaft 421 through the rotating hole 411, when it is necessary to adjust the highest position of the knob assembly 200, the cam 410 can be removed and replaced with other suitable cam 410 structures; wherein the rotation axis of the cam 410 is arranged in the same direction as the rotation axis of the rotating shaft 421; the driving structure 422 can be a rotating motor or other driving form.
[0044] Reference Figure 2 and Figure 4 It can be understood that a limiting groove 111 is provided in the accommodating cavity 110; the cam 410 is provided with a rotating protrusion 412, and the rotating protrusion 412 and the rotating hole 411 are respectively arranged on two opposite sides of the cam 410, and the central axis of the rotating protrusion 412 is coaxially arranged with the central axis of the rotating hole 411; the cross-section of the rotating protrusion 412 is circular, and the protrusion is rotatably arranged in the limiting groove 111.
[0045] The rotating member 420 drives the cam 410 to rotate, and the rotating protrusion 412 of the cam 410 can rotate in the limiting groove 111. The limiting groove 111 can support the cam 410 and limit the position of the cam 410.
[0046] Reference Figure 1 and Figure 6 It can be understood that the knob assembly 200 includes a guide bracket 210 and a knob member 220; the guide bracket 210 can be slidably arranged in the accommodating cavity 110, the peripheral side of the guide bracket 210 abuts against the inner wall of the accommodating cavity 110, the knob member 220 is arranged at the upper end of the guide bracket 210, the cam 410 abuts against the lower end of the guide bracket 210, and one end of the tension spring 300 is connected to the guide bracket 210.
[0047] The peripheral side of the guide bracket 210 abuts against the inner wall of the accommodating cavity 110. By setting the guide bracket 210, the stability of the knob member 220 moving in the accommodating cavity 110 can be limited. The knob member 220 is installed at the upper end of the guide bracket 210. The cam 410 pushes the guide bracket 210 to move upward so as to push the knob member 220 to move upward. The tension spring 300 can pull the guide bracket 210 to move downward so as to drive the guide bracket 210 to move downward.
[0048] Reference Figure 6 It can be understood that a groove 211 is provided at the lower end of the guide bracket 210 , and the groove 211 is arranged opposite to the cam 410 .
[0049] The cam 410 abuts against the bottom wall of the groove 211 . The groove 211 is provided to limit the position between the cam 410 and the guide bracket 210 , thereby improving the stability of the cam 410 pushing the guide bracket 210 to move.
[0050] Reference Figure 6 It can be understood that the width of the groove 211 is equal to the thickness of the cam 410 so as to reduce the degree of slippage of the cam 410 in the groove 211.
[0051] Reference Figure 6 It can be understood that a plurality of tension springs 300 are provided.
[0052] The plurality of tension springs 300 can improve the stability of the pull knob assembly 200 moving downward.
[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. Automatic lifting knob device, characterized in that: include: A housing (100) is provided with a containing cavity (110) and an opening (120); the opening (120) is provided at the top end of the housing (100) and is communicated with the containing cavity (110); A knob assembly (200) is disposed at the opening (120) so as to be movable up and down; A tension spring (300) is disposed in the accommodating cavity (110); two ends of the tension spring (300) are respectively connected to the bottom end of the knob assembly (200) and the housing (100), and the tension spring (300) has an elastic restoring force for pulling the knob assembly (200) to move downward; The lifting assembly (400) comprises a cam (410) and a rotating member (420); the cam (410) abuts against the lower end of the knob assembly (200); the rotating member (420) is connected to the cam (410) and is capable of driving the cam (410) to rotate so that the cam (410) pushes the knob assembly (200) upward.
2. The automatic lifting knob device according to claim 1, characterized in that: It also includes a first sensing member (500) and a sensing structure (600); the sensing structure (600) is arranged on the cam (410) and is located outside the rotation axis of the cam (410); the first sensing member (500) is arranged in the accommodating cavity (110) and is electrically connected to the rotating member (420); the first sensing member (500) is capable of sensing the position of the sensing structure (600) and transmitting the sensing result to the rotating member (420) in the form of an electrical signal.
3. The automatic lifting knob device according to claim 2, characterized in that: The invention also includes a second sensing member (510), wherein the second sensing member (510) and the first sensing member (500) are symmetrically arranged relative to the rotation axis of the cam (410), and the second sensing member (510) is arranged in the accommodating cavity (110) and is electrically connected to the rotating member (420); the second sensing member is capable of sensing the position of the sensing structure (600) and transmitting the sensing structure (600) to the rotating member (420) in the form of an electrical signal.
4. The automatic lifting knob device according to claim 3, characterized in that: The first sensing element (500) and the second sensing element (510) are both Hall sensors, and the sensing structure (600) is an induction magnet.
5. The automatic lifting knob device according to claim 1, characterized in that: The rotating member (420) comprises a driving structure (422) and a rotating shaft (421); a rotating hole (411) is provided on one side of the cam (410); the rotating shaft (421) passes through the rotating hole (411); the driving structure (422) is connected to the rotating shaft (421) and is capable of driving the rotating shaft (421) to rotate.
6. The automatic lifting knob device according to claim 5, characterized in that: A limiting groove (111) is provided in the accommodating cavity (110); the cam (410) is provided with a rotating protrusion (412); the rotating protrusion (412) and the rotating hole (411) are respectively provided on two opposite sides of the cam (410); the central axis of the rotating protrusion (412) is coaxially arranged with the central axis of the rotating hole (411); the cross section of the rotating protrusion (412) is circular, and the protrusion is rotatably arranged in the limiting groove (111).
7. The automatic lifting knob device according to claim 1, characterized in that: The knob assembly (200) comprises a guide bracket (210) and a knob member (220); the guide bracket (210) is slidably arranged in the accommodating cavity (110) up and down, the peripheral side of the guide bracket (210) abuts against the inner wall of the accommodating cavity (110), the knob member (220) is arranged at the upper end of the guide bracket (210), the cam (410) abuts against the lower end of the guide bracket (210), and one end of the tension spring (300) is connected to the guide bracket (210).
8. The automatic lifting knob device according to claim 7, characterized in that: A groove (211) is provided at the lower end of the guide bracket (210), and the groove (211) is arranged opposite to the cam (410).
9. The automatic lifting knob device according to claim 8, characterized in that: The width of the groove (211) is equal to the thickness of the cam (410).
10. The automatic lifting knob device according to claim 1, characterized in that: A plurality of tension springs (300) are provided.