Electrically controlled knob and photographic equipment

Abstract

The utility model provides a kind of electric control knob and photographic equipment, wherein electric control knob includes: base, is equipped with with its inside intercommunication sliding hole;Circuit board, be located in the inside of the base, the circuit board is equipped with switch element;Trigger, with the sliding hole gap cooperation;Coil, with the base fixed connection and along the peripheral arrangement of the trigger;Rotating cap, with the trigger is connected and cover is located outside the coil;Magnetic piece, with the rotating cap is connected and is located between the rotating cap and the coil, and the gap is left between the magnetic piece and the coil. By adopting the above technical scheme, the interaction of magnetic piece and coil realizes the separation of trigger and switch element, responds quickly, improves the sensitivity of control, and can provide more convenient and efficient operation experience for users.

Description

Technical Field

[0001] This utility model relates to the technical field of photographic equipment, and more specifically, to an electric control knob and photographic equipment. Background Technology

[0002] In the field of photography equipment, precision and ease of operation are paramount. Traditional photography equipment relies heavily on button combinations or menu settings for parameter adjustments, which is cumbersome and can easily lead to missed shooting opportunities.

[0003] To optimize the user experience, some devices have adopted a knob design. Early mechanical knobs adjusted parameters through gear transmission. After long-term use, the gears were prone to wear, resulting in decreased accuracy and a lack of consistent feedback, making it difficult to meet high-precision requirements.

[0004] Existing electronic control knobs still have shortcomings in terms of functional integration and convenience. Some can only adjust a single parameter, and multiple knobs are required for multi-parameter adjustment, increasing cost and space, and making the operation panel cumbersome. The signal transmission and feedback mechanism is not perfect, and delays and stutters are prone to occur during rapid adjustments, affecting parameter control. Knobs on devices such as supplementary lighting also make it difficult to achieve fine-tuning of lighting parameters.

[0005] Therefore, a completely new electrically controlled knob is urgently needed to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an electric control knob and a photographic device to solve the technical problem that the electric control knob of the photographic device in the prior art has a single function, which leads to inconvenience in operation.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] Firstly, an electrically controlled knob is provided, comprising:

[0009] The base has a sliding hole that communicates with its interior;

[0010] A circuit board is disposed inside the base, and the circuit board is provided with switching elements;

[0011] The trigger element is clearance-fitted with the sliding hole;

[0012] A coil is fixedly connected to the base and arranged circumferentially along the trigger element;

[0013] A rotating cap is connected to the trigger element and covers the coil.

[0014] A magnetic component is connected to the swivel cap and located between the swivel cap and the coil, with a gap between the magnetic component and the coil;

[0015] The rotating cap can rotate around the axis X of the trigger to drive the magnetic component to rotate relative to the coil, and the magnetic field of the coil changes to output a rotation signal; the trigger can move in the sliding hole in the direction close to the switching element after being pressed to trigger the switching element; the magnetic component can drive the rotating cap to move in the direction away from the switching element under the action of the magnetic field of the coil, so that the trigger disengages from the switching element.

[0016] By adopting the above technical solution, this design integrates rotation control and press control functions into one compact structure, saving space. The rotation signal is output via electromagnetic induction, offering higher precision and stability compared to traditional mechanical structures, reducing mechanical wear, and extending service life. Simultaneously, the interaction between the magnetic component and the coil separates the trigger element from the switching element, resulting in rapid response and improved control sensitivity, providing users with a more convenient and efficient operating experience.

[0017] In one embodiment, the trigger includes a support rod and a first waterproof ring sleeved on the support rod, the first waterproof ring being elastic and abutting against the groove wall of the sliding hole.

[0018] In one embodiment, the base includes a first seat and a second seat, the second seat is disposed on the first seat and has the sliding hole formed thereon, and a second waterproof ring is provided between the first seat and the second seat, the second waterproof ring abutting against the first seat and the second seat respectively.

[0019] In one embodiment, the first base body is provided with a through hole, the sliding hole communicates with the through hole, the trigger element further includes a trigger end provided on the support rod, the trigger end is clearance-fitted with the through hole, the trigger end is provided with a trigger surface perpendicular to the axis X of the support rod and used to abut against the switching element, the size of the trigger surface is larger than the size of the switching element.

[0020] In one embodiment, the trigger end is provided with an elastic structure and a rigid structure disposed on the elastic structure and facing the switching element. The rigid structure is used to trigger the switching element, and the elastic structure is used to buffer the force applied to the switching element by the rigid structure.

[0021] In one embodiment, the trigger further includes a bearing sleeved on the support rod, the inner ring of the bearing being clearance-fitted with the support rod, and the outer ring of the bearing being connected to the base.

[0022] In one embodiment, the number of bearings is two, and the two bearings are located at opposite ends of the support rod.

[0023] In one embodiment, the inner wall of the cap is provided with a metal ring, and the magnetic element is disposed on the metal ring.

[0024] In one embodiment, the outer wall of the cap is provided with anti-slip texture.

[0025] Secondly, a photographic device is provided, including a photographic device body and the aforementioned electric control knob, wherein the electric control knob is disposed on the photographic device body.

[0026] By adopting the above technical solution, the photographic device of this embodiment, in addition to having the advantages of the electric control knob of the above embodiment, also has the advantage of convenient operation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of the electric control knob provided in an embodiment of this utility model.

[0029] Figure 2 This is a cross-sectional view of the electric control knob provided in an embodiment of this utility model.

[0030] Figure 3 This is an exploded view of the electric control knob provided in an embodiment of this utility model.

[0031] The labels for the attached figures are as follows:

[0032] 1. Base; 2. Circuit board; 3. Trigger; 4. Coil; 5. Swivel cap; 6. Magnetic component; 7. First waterproof ring; 8. Second waterproof ring; X-axis;

[0033] 11. Sliding hole; 12. First seat; 13. Second seat; 21. Switching element; 30. Support rod; 31. Trigger end; 32. Bearing; 51. Metal ring;

[0034] 121. Through hole; 311. Trigger surface; 312. Elastic structure; 313. Hard structure. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0039] like Figures 1 to 3 As shown, an embodiment of this utility model provides an electrically controlled knob, comprising:

[0040] The base 1 has a sliding hole 11 that communicates with its interior;

[0041] Circuit board 2 is located inside base 1, and circuit board 2 is equipped with switching element 21;

[0042] Trigger 3 is clearance-fitted with sliding hole 11;

[0043] Coil 4 is fixedly connected to base 1 and arranged circumferentially along trigger 3;

[0044] The rotating cap 5 is connected to the trigger 3 and covers the coil 4;

[0045] Magnetic component 6 is connected to the rotating cap 5 and located between the rotating cap 5 and the coil 4, with a gap between the magnetic component 6 and the coil 4;

[0046] Among them, the rotating cap 5 can rotate around the axis X of the trigger 3 to drive the magnetic element 6 to rotate relative to the coil 4, and the magnetic field of the coil 4 changes to output a rotation signal; the trigger 3 can move in the sliding hole 11 in the direction close to the switching element 21 after being pressed to trigger the switching element 21; the magnetic element 6 can drive the rotating cap 5 to move in the direction away from the switching element 21 under the action of the magnetic field of the coil 4, so that the trigger 3 disengages from the switching element 21.

[0047] Specifically, the electric control knob consists of several key parts. The base 1 has a sliding hole 11 communicating with the interior, providing a track for the movement of the trigger 3. The circuit board 2 is placed inside the base 1, and the switching element 21 on it is the key component for realizing circuit switching. The trigger 3 is clearance-fitted with the sliding hole 11, allowing it to move smoothly within the sliding hole 11. The coil 4 is fixedly connected to the base 1 and arranged circumferentially along the trigger 3. The rotary cap 5 is connected to the trigger 3 and covers the coil 4. The magnetic element 6 is connected between the rotary cap 5 and the coil 4, with a gap between them.

[0048] When the rotary cap 5 rotates around the axis X of the trigger 3, it causes the magnetic component 6 to rotate relative to the coil 4. According to the principle of electromagnetic induction, the magnetic field around the coil 4 changes. The sensor of the electric control knob detects the changing magnetic field parameters and converts them into an electrical signal output, thus allowing adjustment of the camera equipment parameters. When the trigger 3 is pressed—that is, when the user applies pressure to the rotary cap 5 and pushes the trigger 3 down—the trigger 3 can move within the sliding hole 11 towards the switch element 21 and press against the switch element 21, thereby triggering the switch element 21 and connecting the circuit, which can be used to start the camera equipment. When the user removes the force applied to the rotary cap 5, the magnetic component 6, under the influence of the magnetic field of the coil 4, will cause the rotary cap 5 to move away from the switch element 21, causing the trigger 3 to disengage from the switch element 21 and disconnecting the circuit.

[0049] By adopting the above technical solution, this design integrates rotation control and press control functions into one compact structure, saving space. The rotation signal is output via electromagnetic induction, offering higher precision and stability compared to traditional mechanical structures, reducing mechanical wear, and extending service life. Simultaneously, the interaction between the magnetic component 6 and the coil 4 separates the trigger component 3 from the switching element 21, resulting in rapid response, improved control sensitivity, and a more convenient and efficient operating experience for users.

[0050] In one embodiment, the trigger 3 includes a support rod 30 and a first waterproof ring 7 provided for sealing the interior of the base 1. The first waterproof ring 7 is sleeved on the support rod 30, and the first waterproof ring 7 is elastic and abuts against the groove wall of the sliding hole 11.

[0051] Specifically, in this embodiment, based on the original electric control knob structure, the trigger 3 is equipped with a first waterproof ring 7. The first waterproof ring 7 is elastic and abuts against the groove wall of the sliding hole 11. Its core function is to seal the inside of the base 1.

[0052] The first waterproof ring 7, as part of the trigger element 3, uses its own elasticity to make tight contact with the groove wall of the sliding hole 11 to form a sealing structure, which can prevent external water, dust and other impurities from entering the interior of the base 1 through the sliding hole 11, thereby protecting the key components such as the circuit board 2 and the switching element 21 inside the base 1 from contamination or damage.

[0053] When the trigger 3 moves within the sliding hole 11, the first waterproof ring 7 is elastic and always abuts against the groove wall, which not only does not hinder the normal movement of the trigger 3, but also maintains a sealed state, ensuring that the sealing of the base 1 is not affected when the trigger 3 is pressed close to the switching element 21 or moved away from the switching element 21 by the magnetic element 6.

[0054] By adopting the above technical solution, the setting of the first waterproof ring 7 effectively improves the waterproof and dustproof performance of the entire electric control knob, avoids circuit failure or functional failure caused by the intrusion of external impurities, extends the service life and reliability of the product, and does not affect the original rotation signal output and the realization of the functions of pressing trigger and reset, so that the control knob can adapt to more complex use environments and broaden its application range.

[0055] In one embodiment, the base 1 includes a first base 12 and a second base 13. The second base 13 is disposed on the first base 12 and has a sliding hole 11. A second waterproof ring 8 is provided between the first base 12 and the second base 13, and the second waterproof ring 8 abuts against the first base 12 and the second base 13 respectively.

[0056] Specifically, this embodiment optimizes the structure of the base 1 of the electric control knob. The base 1 includes a first seat 12 and a second seat 13. The second seat 13 is disposed on the first seat 12, and the second seat 13 forms a sliding hole 11 for the movement of the trigger 3. A second waterproof ring 8 is provided between the first seat 12 and the second seat 13, and this waterproof ring is in close contact with the first seat 12 and the second seat 13 respectively.

[0057] The second waterproof ring 8, as a key sealing component, is placed between the two seats, using its own properties to fill any gaps that may exist between them.

[0058] When external water or dust and other impurities attempt to penetrate the interior of the base 1 through the connection between the first base 12 and the second base 13, the second waterproof ring 8, through its own elastic deformation, tightly fits the contact surface of the two bases, effectively preventing impurities from entering through the gap.

[0059] By adopting the above technical solution and adding a second waterproof ring 8, the overall waterproof and dustproof performance of the base 1 is greatly improved, further protecting the precision components such as the circuit board 2 and switch element 21 inside the base 1, avoiding short circuits, corrosion and other failures caused by external impurities, thereby enhancing the stability and reliability of the entire electric control knob, extending the product's service life, and broadening its application range in various complex environments.

[0060] In one embodiment, the first base 12 is provided with a through hole 121, the sliding hole 11 communicates with the through hole 121, the trigger member 3 is provided with a trigger end 31, the trigger end 31 is clearance-fitted with the through hole 121, the trigger end 31 is provided with a trigger surface 311 perpendicular to the axis X of the trigger member 3 and used to abut against the switching element 21, the size of the trigger surface 311 is larger than the size of the switching element 21.

[0061] Specifically, the first base 12 is provided with a through hole 121 communicating with the sliding hole 11. The trigger end 31 of the trigger member 3 is in clearance fit with the through hole 121. The trigger end 31 is also provided with a trigger surface 311 perpendicular to the axis X of the trigger member 3 and used to abut against the switching element 21. The size of the trigger surface 311 is larger than the size of the switching element 21.

[0062] The through hole 121 of the first base 12 communicates with the sliding hole 11 on the second base 13, providing a channel for the movement of the trigger end 31 of the trigger member 3. The trigger surface 311 of the trigger end 31 is relatively large, ensuring that it can effectively cover the switching element 21. During operation, when pressure is applied to the trigger member 3, the trigger end 31 will move towards the switching element 21 within the channel formed by the sliding hole 11 and the through hole 121. Since the size of the trigger surface 311 is larger than that of the switching element 21, it can accurately and stably abut against the switching element 21, triggering its operation. When the trigger member 3 is reset by the magnetic element 6, the trigger end 31 moves away from the switching element 21 in the opposite direction.

[0063] By adopting the above technical solution, the design of the trigger surface 311 being larger than the switching element 21 improves the accuracy and reliability of triggering and reduces triggering errors caused by alignment deviations. At the same time, the gap fit between the trigger end 31 and the through hole 121 not only ensures the smooth movement of the trigger element 3, but also prevents external impurities from entering the interior of the base 1 through the gap to a certain extent, thus protecting the internal precision components and improving the stability and durability of the entire electric control knob in actual use.

[0064] In one embodiment, the trigger end 31 is provided with an elastic structure 312 and a rigid structure 313 disposed on the elastic structure 312 and facing the switching element 21. The rigid structure 313 is used to trigger the switching element 21, and the elastic structure 312 is used to buffer the force applied to the switching element 21 by the rigid structure 313.

[0065] Specifically, the trigger end 31 is provided with an elastic structure 312 and a rigid structure 313, with the rigid structure 313 located on the elastic structure 312 and facing the switching element 21.

[0066] The elastic structure 312 and the rigid structure 313 together constitute the special structure of the trigger end 31. The two work together and play different roles. For example, the elastic structure 312 can be a silicone structure; the rigid structure 313 can be a plastic structure.

[0067] When the trigger 3 is pressed and moves towards the switching element 21, the rigid structure 313 first contacts the switching element 21. Due to its relatively hard material, it can effectively trigger the switching element 21 to operate, thus turning on the circuit. During this process, the elastic structure 312 deforms due to the force between the rigid structure 313 and the switching element 21, acting as a buffer to prevent the rigid structure 313 from exerting excessive impact force on the switching element 21 and to prevent the switching element 21 from being damaged due to excessive instantaneous force. When the trigger 3 moves away from the switching element 21 under the action of the magnetic component 6, the elastic structure 312 can also assist the trigger end 31 to reset more smoothly.

[0068] By adopting the above technical solution, the service life of the switching element 21 is significantly improved, the risk of damage caused by frequent triggering operations is reduced, the reliability of the triggering action is ensured, and the situation of poor triggering caused by improper buffering is avoided. This further improves the stability and durability of the entire electric control knob in terms of pressing operation and enhances the overall performance of the product.

[0069] In one embodiment, the trigger 3 further includes a bearing 32 sleeved on the support rod 30, the inner ring of the bearing 32 being clearance-fitted with the support rod 30, and the outer ring of the bearing 32 being connected to the base 1.

[0070] Specifically, a bearing 32 is provided on the support rod 30. The inner ring of the bearing 32 is clearance-fitted with the support rod 30, while the outer ring is connected to the base 1. Structurally, the bearing 32 serves as a component connecting the support rod 30 and the base 1. The clearance fit between the inner ring and the support rod 30 provides space for the movement of the support rod 30, while the connection between the outer ring and the base 1 ensures the relative fixation of the bearing 32's position, thus providing stable support for the support rod 30 during rotation and movement.

[0071] When the rotating cap 5 drives the support rod 30 to rotate around the axis X, the inner ring of the bearing 32 will rotate with the support rod 30, while the outer ring remains stationary because it is connected to the base 1. The rolling friction between the inner and outer rings can greatly reduce the resistance when the trigger element 3 rotates, ensuring a smooth and stable rotation process and reducing component wear caused by excessive friction. At the same time, when the support rod 30 is pressed into the sliding hole 11 and moves in the direction of approaching or moving away from the switching element 21, the clearance fit between the inner ring of the bearing 32 and the support rod 30 allows the support rod 30 to move axially, and the bearing 32 can guide the movement of the support rod 30 to prevent it from deviating or shaking.

[0072] By adopting the above technical solution, the bearing 32 effectively reduces the frictional resistance when the support rod 30 rotates, improves the smoothness and accuracy of the rotation operation, reduces the mechanical wear of the components, and extends the service life of the product. At the same time, the guiding effect of the bearing 32 on the movement of the support rod 30 ensures the stability of the pressing and resetting actions, avoids problems such as the failure of the switching element 21 or the unresponsiveness caused by the offset of the support rod 30, and further enhances the working reliability and operating experience of the entire electric control knob.

[0073] In one embodiment, there are two bearings 32, which are located at the two ends of the support rod 30.

[0074] Specifically, the trigger 3 is equipped with two bearings 32, which are located at both ends of the support rod 30. Structurally, the two bearings 32 form support points at both ends of the support rod 30. The inner ring of each bearing 32 is clearance-fitted with the support rod 30, while the outer ring is connected to the base 1, together providing stable support for the support rod 30.

[0075] When the nut 5 drives the support rod 30 to rotate around the axis X, the inner rings of the bearings 32 at both ends rotate synchronously with the trigger 3, and the outer rings remain fixed because they are connected to the base 1. The rolling friction at both ends reduces the rotational resistance, making the support rod 30 rotate more smoothly. When the support rod 30 is pressed and moves axially, the clearance fit between the inner rings of the bearings 32 at both ends and the support rod 30 allows it to move axially, and the bearings 32 at both ends can guide the support rod 30 from both ends to prevent it from tilting or deviating during movement.

[0076] By adopting the above technical solution, the design of two bearings 32 located at both ends further enhances the support stability of the support rod 30. During rotation, the force can be more effectively distributed, reducing the swaying of the support rod 30 and improving the accuracy and smoothness of rotation. At the same time, it reduces the load on a single bearing 32 and extends the service life of the bearing 32. When the support rod 30 moves axially, the guiding effect at both ends makes the movement smoother and avoids deviation caused by uneven force on one end. This ensures that the support rod 30 can accurately approach or disengage from the switching element 21, thereby improving the overall reliability and durability of the electric control knob.

[0077] In one embodiment, the inner wall of the cap 5 is provided with a metal ring 51, and the magnetic element 6 is provided on the metal ring 51.

[0078] Specifically, the inner wall of the cap 5 is provided with a metal ring 51, and the magnetic component 6 is mounted on the metal ring 51. Structurally, the metal ring 51 is fixed to the inner wall of the cap 5, providing a stable mounting carrier for the magnetic component 6. The magnetic component 6 is reliably connected to the cap 5 through the metal ring 51, and the metal ring 51 makes the mounting position of the magnetic component 6 more stable, ensuring that it is always located in the preset position between the cap 5 and the coil 4, maintaining the designed gap with the coil 4.

[0079] When the rotating cap 5 rotates around the axis X of the trigger 3, the metal ring 51 rotates synchronously with the rotating cap 5, thereby driving the magnetic component 6 mounted on it to rotate relative to the coil 4, causing the magnetic field of the coil 4 to change and output a rotation signal; at the same time, the metal ring 51 supports and positions the magnetic component 6, ensuring that the magnetic component 6 is stable in position during rotation and interaction with the magnetic field of the coil 4, and avoiding the impact of the shaking of the magnetic component 6 on the stability of the magnetic field change and the accuracy of the signal output.

[0080] By adopting the above technical solution, the metal ring 51 enhances the stability of the connection between the magnetic component 6 and the rotating cap 5, ensuring that the magnetic component 6 will not shift or fall off when rotating with the rotating cap 5, thus improving the stability and reliability of the rotation signal output. The metal ring 51 can also concentrate or shield the magnetic field of the magnetic component 6, optimize the magnetic field distribution, make the magnetic field change induced by the coil 4 more uniform, and improve the accuracy of the rotation signal. In addition, as an intermediate connection structure, the metal ring 51 can reduce the requirements for the material or structure of the rotating cap 5 when the magnetic component 6 is directly installed on the rotating cap 5, increase the design flexibility, extend the service life of the magnetic component 6, and further improve the working performance and durability of the entire electric control knob.

[0081] In one embodiment, the outer wall of the rotating cap 5 is provided with anti-slip texture.

[0082] Specifically, in this embodiment, the outer wall of the swivel cap 5 is provided with anti-slip texture. From the perspective of structural composition, the anti-slip texture is a texture structure that is directly formed or set on the outer surface of the swivel cap 5. Its shape can be alternating stripes, grids or other irregular textures, which increases the roughness of the outer wall of the swivel cap 5.

[0083] When the user needs to rotate the cap 5 to achieve the rotation control function, the finger contacts the outer wall of the cap 5. The anti-slip texture increases the friction between the finger and the cap 5, reducing slippage during rotation. This ensures that the rotational force applied by the user can be more effectively transmitted to the cap 5, allowing the cap 5 to rotate stably around the axis X of the trigger 3. This, in turn, drives the magnetic component 6 to rotate relative to the coil 4, ensuring that the coil 4 outputs a stable rotation signal due to changes in the magnetic field. At the same time, when pressing the cap 5 to trigger the trigger 3 to activate the switch element 21, the anti-slip texture also increases the grip between the finger and the cap 5, preventing slippage during pressing and ensuring that the trigger 3 can be accurately pressed and move within the sliding hole 11.

[0084] By adopting the above technical solution, the anti-slip texture significantly improves the friction when the user operates the knob 5, enhances the stability and reliability of operation, reduces operational errors caused by slippage, and allows the user to control more precisely whether it is rotation adjustment or pressing trigger, improving the operating feel and user experience. At the same time, it also reduces the risk of accidental damage to the knob due to slippage, indirectly extending the product's service life.

[0085] Secondly, a photographic device is provided, including a photographic device body and the aforementioned electric control knob, the electric control knob being disposed on the photographic device body.

[0086] In this embodiment, the photographic equipment includes, but is not limited to, photographic lighting, cameras, or camcorders.

[0087] By adopting the above technical solution, the photographic device of this embodiment, in addition to having the advantages of the electric control knob of the above embodiment, also has the advantage of convenient operation.

[0088] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrically controlled knob, characterized in that, include: The base (1) has a sliding hole (11) communicating with its interior; A circuit board (2) is disposed inside the base (1), and the circuit board (2) is provided with a switching element (21); The trigger (3) is clearance-fitted with the sliding hole (11); The coil (4) is fixedly connected to the base (1) and arranged circumferentially along the trigger (3); A rotating cap (5) is connected to the trigger (3) and covers the coil (4); A magnetic component (6) is connected to the swivel cap (5) and located between the swivel cap (5) and the coil (4), with a gap between the magnetic component (6) and the coil (4); The rotating cap (5) can rotate around the axis X of the trigger (3) to drive the magnetic element (6) to rotate relative to the coil (4), and the magnetic field of the coil (4) changes to output a rotation signal; the trigger (3) can be pressed and move in the sliding hole (11) in the direction close to the switch element (21) to trigger the switch element (21); the magnetic element (6) can drive the rotating cap (5) to move in the direction away from the switch element (21) under the action of the magnetic field of the coil (4), so that the trigger (3) disengages from the switch element (21).

2. The electrically controlled knob as described in claim 1, characterized in that, The trigger (3) includes a support rod (30) and a first waterproof ring (7) sleeved on the support rod (30). The first waterproof ring (7) is elastic and abuts against the groove wall of the sliding hole (11).

3. The electrically controlled knob as described in claim 2, characterized in that, The base (1) includes a first seat (12) and a second seat (13). The second seat (13) is disposed on the first seat (12) and has the sliding hole (11). A second waterproof ring (8) is provided between the first seat (12) and the second seat (13). The second waterproof ring (8) abuts against the first seat (12) and the second seat (13) respectively.

4. The electrically controlled knob as described in claim 3, characterized in that, The first base (12) is provided with a through hole (121), and the sliding hole (11) communicates with the through hole (121). The trigger (3) also includes a trigger end (31) provided on the support rod (30). The trigger end (31) is in clearance fit with the through hole (121). The trigger end (31) is provided with a trigger surface (311) perpendicular to the axis X of the support rod (30) and used to abut against the switch element (21). The size of the trigger surface (311) is larger than the size of the switch element (21).

5. The electrically controlled knob as described in claim 4, characterized in that, The trigger end (31) is provided with an elastic structure (312) and a rigid structure (313) provided on the elastic structure (312) and facing the switching element (21). The rigid structure (313) is used to trigger the switching element (21), and the elastic structure (312) is used to buffer the force applied to the switching element (21) by the rigid structure (313).

6. The electrically controlled knob as described in any one of claims 2 to 5, characterized in that, The trigger (3) also includes a bearing (32) sleeved on the support rod (30), the inner ring of the bearing (32) is clearance-fitted with the support rod (30), and the outer ring of the bearing (32) is connected to the base (1).

7. The electrically controlled knob as described in claim 6, characterized in that, There are two bearings (32), and the two bearings (32) are located at the two ends of the support rod (30).

8. The electrically controlled knob as described in any one of claims 1 to 5, characterized in that, The inner wall of the cap (5) is provided with a metal ring (51), and the magnetic component (6) is provided on the metal ring (51).

9. The electrically controlled knob as described in any one of claims 1 to 5, characterized in that, The outer wall of the swivel cap (5) is provided with anti-slip texture.

10. A photographic device, characterized in that, It includes a main body of a photographic device and an electrically controlled knob as described in any one of claims 1 to 9, wherein the electrically controlled knob is disposed on the main body of the photographic device.

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