A sealed knob mechanism

Abstract

The application discloses a sealed knob mechanism in the technical field of control knobs, which comprises a knob and a knob shell; a rotating mechanism is arranged in the knob shell; the rotating mechanism comprises a rotating seat and a knob fixing seat for assembling the rotating seat; the rotating seat is provided with a continuous undulating curved surface; elastic element two and a ball are arranged between the continuous undulating curved surface and the knob fixing seat; the ball is arranged between the elastic element two and the continuous undulating curved surface; the elastic element two applies elastic pressure to the ball towards the continuous undulating curved surface, so that the ball is always in contact with the continuous undulating curved surface; the knob is in transmission connection with the rotating seat; when the knob is rotated, the knob can drive the rotating seat to rotate synchronously. The application is suitable for engineering machinery control adjustment, reduces the abrasion of the knob during rotation, and prolongs the service life of the whole mechanism.

Description

Technical Field

[0001] This application relates to the field of control knob technology, and more particularly to a sealing knob mechanism. Background Technology

[0002] In the application scenarios of construction machinery, knobs, as the core control components of human-machine interaction, are widely used in the operation panels of equipment such as excavators, loaders, and cranes. They undertake key control functions such as switching working conditions, adjusting parameters, and starting and stopping functions. Their reliability directly affects the operating efficiency and safety of construction machinery.

[0003] Existing knobs used in construction machinery generally suffer from insufficient service life. Limited by the wear resistance of the internal transmission structure and the fitting precision between the external housing and the shaft, existing knobs commonly exhibit jamming and malfunction under high-frequency operation, failing to meet the lifespan requirements of construction machinery. Frequent replacements not only increase equipment maintenance costs but also easily lead to operational interruptions. Furthermore, due to the complex operating environment of construction machinery, often facing harsh conditions such as dust, humidity, and vibration, the sealing performance of existing knobs is insufficient to effectively resist external environmental interference, making internal components susceptible to contamination and corrosion, further shortening the knob's service life and reducing the overall reliability and stability of the equipment. Utility Model Content

[0004] The purpose of this application is to provide a sealing knob mechanism that solves the problem of easy wear of knobs in the prior art, thereby improving the service life of the knob.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] This application provides a sealing knob mechanism, including a knob and a knob housing;

[0007] The knob housing is provided with a rotating mechanism, which includes a rotating base and a knob fixing base for assembling the rotating base. The rotating base is provided with a continuous undulating surface; the continuous undulating surface includes mutually spaced and continuously connected crest surfaces and trough surfaces.

[0008] An elastic element two and a ball are disposed between the continuous undulating surface and the knob fixing seat. The ball is placed between the elastic element two and the continuous undulating surface. The elastic element two applies elastic pressure to the ball toward the continuous undulating surface, so that the ball always keeps in contact with the continuous undulating surface.

[0009] The knob is connected to the rotating base in a transmission manner. When the knob is rotated, the knob can drive the rotating base to rotate synchronously.

[0010] Furthermore, the rotating seat is provided with a first sealing ring and a second sealing ring;

[0011] The first sealing ring is assembled between the knob and the rotating base;

[0012] The second sealing ring is assembled between the rotating seat and the rotating fixed seat. By adding the sealing ring, impurities are effectively prevented from entering the knob mechanism, thus improving the sealing performance of the entire sealing knob mechanism.

[0013] Furthermore, the knob is equipped with a light guide component, and the knob housing is equipped with a light-emitting component;

[0014] The light guide component is used to guide the light generated by the light-emitting component to the preset light-emitting area of ​​the knob. Through the cooperation of the light-emitting component and the light guide component, the position and operation status of the knob can be clearly displayed in low-light environments.

[0015] Furthermore, the light-emitting component includes a circuit board and a light-emitting element, the light-emitting element being disposed on the circuit board.

[0016] Furthermore, the knob housing includes an upper housing and a lower housing;

[0017] The upper and lower housings combine to form a sealed space for housing the rotating mechanism and the light-emitting component. The cooperation between the upper and lower housings further improves the sealing performance of the knob mechanism.

[0018] Furthermore, the circuit board is also provided with a button, and the knob is provided with a button trigger part for triggering the electrical signal of the button, thereby realizing the button function of the knob.

[0019] Furthermore, an elastic element is provided between the knob and the rotating base to provide a reset force for the knob, so that the button trigger part does not contact the button when it is not pressed.

[0020] Furthermore, the rotating base is also provided with a shielding surface, and the circuit board is provided with a photoelectric switch;

[0021] The knob drives the rotating base to rotate. The change in the relative position of the shielding surface and the photoelectric switch causes the photoelectric switch to switch signals, thereby realizing the rotation function of the knob.

[0022] Compared with the prior art, the beneficial effects achieved by this application are as follows:

[0023] The sealing knob mechanism disclosed in this application adds an elastic element and a ball between the rotating seat and the rotating fixed seat. The ball reduces friction between the rotating seat and the rotating fixed seat, reduces wear, and thus extends the service life of the entire sealing knob mechanism. The elastic element provides a stable and moderate rotational damping force for the knob, avoiding jamming during rotation. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a sealing knob mechanism provided in this application;

[0025] Figure 2 yes Figure 1 Exploded view of the internal structure of the sealing knob mechanism shown in the figure;

[0026] Figure 3 yes Figure 2 A schematic diagram of the rotating base of the knob mechanism shown in the figure;

[0027] Figure 4 yes Figure 2 The diagram shows the structure of the knob in the knob mechanism shown.

[0028] In the diagram: 1. Knob; 1-1. Light-emitting lens; 1-2. Light guide lens; 1-3. Button contact part; 1-4. Guide groove; 2. Upper housing; 3. Elastic element one; 4. First sealing ring; 5. Rotating seat; 5-1. Continuous undulating surface; 5-2. Obstruction surface; 5-3. Guide block; 6. Second sealing ring; 7. Ball bearing; 8. Elastic element two; 9. Knob fixing seat; 10. Circuit board; 10-1. Photoelectric switch; 10-2. Button; 10-3. Light-emitting element; 11. Lower housing. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0030] This embodiment provides a sealing knob mechanism that can be used in various electronic or mechanical devices that require sealing operations and have rotational adjustment functions, thereby improving the reliability and service life of the equipment. For example... Figures 1 to 3 As shown, the mechanism specifically includes a knob 1 and a knob housing; a rotating mechanism is provided in the knob housing, the rotating mechanism includes a rotating base 5 and a knob fixing base 9 for assembling the rotating base, the rotating base 5 has a continuous undulating surface 5-1, the continuous undulating surface includes mutually spaced and continuously connected crest surfaces and trough surfaces; an elastic element 2 8 and a ball bearing 7 are arranged between the continuous undulating surface 5-1 and the knob fixing base 9, the ball bearing 7 is placed between the elastic element 2 8 and the continuous undulating surface 5-1, the elastic element 2 8 applies elastic pressure to the ball bearing 7 toward the continuous undulating surface 5-1, so that the ball bearing 7 always keeps in contact with the continuous undulating surface 5-1; the knob 1 is connected to the rotating base 5 in a transmission manner, when the knob 1 is rotated, the knob 1 can drive the rotating base 5 to rotate synchronously.

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, in order to realize the aperture effect of knob 1, a light guide component is provided inside the knob, and a light-emitting component is provided inside the knob housing; the light guide component is used to conduct the light generated by the light-emitting component to the preset light-emitting area of ​​the knob.

[0032] Furthermore, the light-emitting component includes a circuit board 10 and a light-emitting element 10-3. The circuit board 10 can be connected to a preset mounting position on the inner wall of the knob housing by means of screws or snap-fit. In this embodiment, the light-emitting element 10-3 preferably uses a light-emitting diode as the core light-emitting element. In specific application scenarios, depending on the actual functional requirements, a single-color light-emitting diode or a red-green-blue tri-color light-emitting diode can be further selected from the LED types. Other components with the same light-emitting function, including but not limited to organic light-emitting diodes, miniature neon lamps, and semiconductor laser diodes, can also be selected to meet the light-emitting performance in different scenarios. The light-emitting element 10-3 is soldered onto the circuit board 10.

[0033] The light guide assembly is located inside the knob 1 and includes a light guide mirror 1-2 and a light-emitting mirror 1-1. After light is emitted through the light-emitting element 10-3, it is captured by the reflective surface of the light guide mirror 1-2 and guided to the scattering surface of the light guide mirror 1-2. After being processed by the scattering surface of the light guide mirror 1-2, the light enters the light-emitting mirror 1-1 inside the knob 1. The light-emitting mirror 1-1 completes the presentation of the aperture effect, thereby enabling the knob's position and operating status to be clearly displayed in low-light environments.

[0034] like Figures 1 to 3 As shown, in this embodiment, the elastic element 2 8 is a compression spring. The elastic element 2 8 is assembled onto the ball 7 by interference fit. The two form an assembly that is installed into the mounting hole of the knob fixing seat 9. The assembly and the knob fixing seat 9 form a clearance fit. The rotating seat 5 and the knob fixing seat 9 are connected by a snap-fit ​​assembly method.

[0035] The elastic element 8 always contacts the ball 7 against the continuous undulating surface 5-1 on the rotating seat 5. During the rotation of the knob 1, the knob 1 drives the rotating seat 5 to rotate synchronously, causing the ball 7 to slide from the trough to the crest along the continuous undulating surface 5-1. This converts the elastic pressure of the elastic element 8 into resistance to the radial rotation of the knob 1, achieving torque control of the knob 1. Under the action of the elastic pressure, the ball 7 slides from the crest of the continuous undulating surface 5-1 to the adjacent trough. Because the installation position of the ball 7 is far from the rotation center of the knob 1, the contact pressure between the ball 7 and the continuous undulating surface 5-1 is reduced when providing the same resistance torque, effectively reducing wear at the contact points. Simultaneously, grease can be applied to the surface of the ball 7 to further reduce the friction between the ball 7 and the continuous undulating surface 5-1, enabling the knob 1 to achieve a high-frequency mechanical lifespan during rotation.

[0036] In this embodiment, the rotating base 5 is also provided with a shielding surface 5-2, and the circuit board 10 is provided with a photoelectric switch 10-1. When the relative position of the shielding surface 5-2 and the photoelectric switch 10-1 changes, that is, when it changes from a shielding state to an unshielded state, the photoelectric switch 10-1 will trigger a signal switch, thereby activating the rotation function of the knob 1. Since there is no direct contact between the photoelectric switch 10-1 and the mechanical parts, it will not affect its lifespan.

[0037] like Figures 1 to 4 As shown, in this embodiment, the circuit board 10 is further provided with a button 10-2, and the knob is provided with a button trigger part 1-3. When the knob 1 is pressed, the button trigger part 1-3 of the knob 1 presses the button 10-2 on the circuit board 10, triggering the circuit signal of the button 10-2, thereby realizing the function of the button 10-2. During the pressing process, the guide groove 1-4 of the knob 1 cooperates with the guide block 5-3 in the rotating seat 5 to guide the pressing of the knob 1. An elastic element 3 is also provided between the knob 1 and the rotating seat 5. The elastic element 3 is a compression spring, which is used to provide a reset force for the knob 1. When the knob 1 is not pressed, the button trigger part 1-3 of the knob 1 does not contact the button 10-2 on the circuit board 10, which ensures that the button trigger part 1-3 and the button 10-2 will not rub against each other during the rotation of the knob 1, thereby improving the lifespan of the button 10-2.

[0038] like Figure 1 and Figure 2As shown, in this embodiment, to enhance the sealing performance of the knob mechanism, a first sealing ring 4 and a second sealing ring 6 are provided on the rotating base 5. The first sealing ring 4 is fitted between the knob 1 and the rotating base 5, providing a seal between them; the second sealing ring 6 is fitted between the rotating base 5 and the rotating fixed base 9, providing a seal between them. To further enhance the sealing performance of the knob mechanism, in this embodiment, the knob housing consists of an upper housing 2 and a lower housing 11. The upper housing 2 is made of silicone material, which can form an interference fit with the rotating fixed base 9 and the lower housing 11, thereby achieving a seal. Through this triple sealing structure, the entire knob mechanism can achieve an IP66 level sealing protection standard.

[0039] In the description of this application, it should be understood that the terms "center," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific orientation. If the specific orientation changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application.

[0040] 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. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "assembly," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will be able to understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A sealing knob mechanism, characterized in that, Includes a knob (1) and a knob housing; The knob housing is provided with a rotating mechanism, which includes a rotating seat (5) and a knob fixing seat (9) for assembling the rotating seat (5). The rotating seat (5) is provided with a continuous undulating surface (5-1). The continuous undulating surface includes mutually spaced and continuously connected peak surfaces and trough surfaces. An elastic element two (8) and a ball (7) are disposed between the continuous undulating surface (5-1) and the knob fixing seat (9). The ball (7) is placed between the elastic element two (8) and the continuous undulating surface (5-1). The elastic element two (8) applies elastic pressure to the ball (7) towards the continuous undulating surface (5-1) so that the ball (7) always keeps in contact with the continuous undulating surface (5-1). The knob (1) is connected to the rotating seat (5) in a transmission manner. When the knob (1) is rotated, the knob (1) can drive the rotating seat (5) to rotate synchronously.

2. The sealing knob mechanism according to claim 1, characterized in that, The rotating seat (5) is provided with a first sealing ring (4) and a second sealing ring (6); The first sealing ring (4) is assembled between the knob (1) and the rotating seat (5); The second sealing ring (6) is assembled between the rotating seat (5) and the knob fixing seat (9).

3. The sealing knob mechanism according to claim 1, characterized in that, The knob (1) is provided with a light guide component, and the knob housing is provided with a light-emitting component; The light guide component is used to guide the light generated by the light-emitting component to the preset light-emitting area of ​​the knob (1).

4. The sealing knob mechanism according to claim 3, characterized in that, The light-emitting component includes a circuit board (10) and a light-emitting element (10-3), wherein the light-emitting element (10-3) is disposed on the circuit board (10).

5. The sealing knob mechanism according to claim 3, characterized in that, The knob housing includes an upper housing (2) and a lower housing (11). The upper shell (2) and the lower shell (11) are combined to form a sealed space for placing the rotating mechanism and the light-emitting component.

6. The sealing knob mechanism according to claim 4, characterized in that, The circuit board (10) is also provided with a button (10-2), and the knob (1) is provided with a button triggering part for triggering the electrical signal of the button (10-2) to realize the button function of the knob (1).

7. The sealing knob mechanism according to claim 6, characterized in that, An elastic element (3) is also provided between the knob (1) and the rotating base (5) to provide a reset elastic force for the knob (1) so that when the button (10-2) is not pressed, the button trigger part does not contact the button (10-2).

8. The sealing knob mechanism according to claim 4, characterized in that, The rotating base (5) is also provided with a shielding surface (5-2), and the circuit board is provided with a photoelectric switch (10-1). The knob (1) drives the rotating base (5) to rotate. By changing the relative position of the shielding surface (5-2) and the photoelectric switch (10-1), the photoelectric switch (10-1) generates a signal switch, thereby realizing the rotation function of the knob (1).

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