flashlight

Abstract

This utility model belongs to the technical field of lighting equipment and discloses a flashlight, including a body and a tail switch assembly. The tail switch assembly is configured to drive a light-emitting component to switch light emission modes. The tail switch assembly includes: a tail cap connected to the body, with a drive circuit board disposed inside the tail cap and connected to the light-emitting component via signal transmission; a rotating component partially disposed inside the tail cap and capable of rotating relative to the tail cap around its own axis, with a portion of the bottom surface of the rotating component configured as a reflective part and the remaining portion configured as a non-reflective part; and an optocoupler switch connected to the top surface of the drive circuit board and including an on and off state, the top surface of the optocoupler switch being a sensing surface. The reflective part can face and cooperate with the sensing surface to put the optocoupler switch in the on state, and the non-reflective part can face and cooperate with the sensing surface to put the optocoupler switch in the off state. This utility model is beneficial for improving the working stability and reliability of the flashlight.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to a flashlight. Background Technology

[0002] Flashlights are portable lighting tools used in modern life and industrial applications, widely used in various scenarios such as daily lighting, outdoor exploration, and emergency rescue. With the diversification of functional requirements, flashlight switches are no longer limited to simple on / off control, but need to achieve switching between different lighting modes. Currently, flashlight switch technology is mainly divided into two types: contact and non-contact. Their core function is to achieve precise switching of the flashlight's working state (including light source type, brightness level, etc.) through circuit on / off or magnetic field induction.

[0003] Existing contact switches mostly use metal parts such as springs or metal pins to connect the circuit. During long-term use, frequent contact and disconnection operations cause wear on these metal parts, leading to poor contact and problems such as malfunctioning mode switching and flickering light. Non-contact switches often use Hall effect switches, which achieve non-contact operation through magnetic field control, significantly improving their lifespan. However, they also have significant drawbacks. When there is external magnetic field interference, the switch is prone to malfunction, resulting in false triggering or being locked in a fixed lighting mode. In addition, if there are multiple magnetic field sources within the product, mutual interference may occur, preventing the switch from accurately performing its intended function.

[0004] Therefore, there is an urgent need to develop a flashlight to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a flashlight that achieves non-contact operation, effectively avoiding component wear caused by frequent contact and disconnection, and preventing false triggering, being locked in a fixed lighting mode, or interference from multiple magnetic field sources caused by magnetic field interference. This allows the flashlight to accurately perform its intended function, which is beneficial to improving the working stability and reliability of the flashlight.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a flashlight, including a tube body and a tail switch assembly connected to the tube body. The tail switch assembly is configured to drive a light-emitting component inside the tube body to switch its light-emitting mode. The tail switch assembly includes:

[0008] A tail cap is connected to the cylinder body, and a drive circuit board is provided inside the tail cap. The drive circuit board is connected to the light-emitting component.

[0009] A rotating component is partially disposed inside the tail cover and is capable of rotating relative to the tail cover about its own axis. A portion of the bottom surface of the rotating component is configured as a reflective part, and the remaining portion is configured as a non-reflective part.

[0010] An optocoupler switch is connected to the top surface of the drive circuit board. The top surface of the optocoupler switch is a sensing surface. The optocoupler switch includes an on state and an off state. The reflective part can face and cooperate with the sensing surface to put the optocoupler switch in the on state. The non-reflective part can face and cooperate with the sensing surface to put the optocoupler switch in the off state.

[0011] In some embodiments, a plurality of optocouplers are provided, each optocoupler including the sensing surface, and the reflective portion is configured to face at least one of the sensing surfaces.

[0012] In some embodiments, the tail switch assembly further includes a gear shift knob, the rotating member includes an extension protruding from the top wall of the tail cover, the gear shift knob is sleeved and connected to the outer periphery of the extension, and the gear shift knob is capable of driving the rotating member to rotate.

[0013] In some embodiments, the inner peripheral surface of the adjustment knob is provided with a first protrusion, the inner peripheral surface of the first protrusion abuts against the outer peripheral surface of the extended section, the top surface of the first protrusion is pressed with a first limiting ring, and the first limiting ring is fixedly connected to the outer peripheral surface of the extended section.

[0014] In some embodiments, the gear selector knob abuts against the top wall of the tail cap.

[0015] In some embodiments, the top wall is provided with a positioning groove, and the bottom surface of the adjustment knob is provided with a positioning member, which can engage with the positioning groove so that the reflective part is kept opposite to at least one of the sensing surfaces.

[0016] In some embodiments, the positioning element includes an elastic element and a positioning ball. The bottom surface of the adjustment knob has a receiving hole. The elastic element is disposed inside the receiving hole. The positioning ball is connected to one end of the elastic element near the bottom opening of the receiving hole. The elastic element always has an elastic tendency to make the positioning ball extend out of the bottom opening of the receiving hole.

[0017] In some embodiments, the distance between each point on the surface of the reflective portion facing the corresponding sensing surface and the sensing surface is less than or equal to the receivable distance of the sensing surface, and the distance between each point on the surface of the non-reflective portion facing the corresponding sensing surface and the sensing surface is greater than the receivable distance of the sensing surface.

[0018] In some embodiments, a second limiting ring is fixedly connected to the inner peripheral wall of the tail cover, and a second boss is provided on the inner peripheral surface of the second limiting ring, and the drive circuit board is supported on the top surface of the second boss.

[0019] In some embodiments, a sealing ring is provided between the rotating component and the inner peripheral wall of the tail cap.

[0020] The beneficial effects of this utility model are:

[0021] The flashlight provided by this utility model incorporates an optical coupler switch and a rotating component including a reflective and non-reflective part in the tail switch assembly. By rotating the rotating component, the user can switch the optical coupler switch between the on and off states based on the principle of light reflection. This allows the light-emitting component to switch between different light-emitting modes, achieving non-contact operation. This effectively avoids component wear caused by frequent contact and disconnection, and also prevents false triggering, being locked into a fixed lighting mode, or interference from multiple magnetic field sources due to magnetic field interference. As a result, the flashlight can accurately perform its intended function, which helps improve the working stability and reliability of the flashlight. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the flashlight provided in this embodiment of the utility model;

[0024] Figure 2 This is a cross-sectional view of the internal structure of the tail switch assembly provided in this embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the rotating component from one perspective provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the rotating component from another perspective provided in this embodiment of the utility model;

[0027] Figure 5 This is a cross-sectional view of the tail switch assembly provided in this embodiment of the utility model. Figure 1 ;

[0028] Figure 6 This is a cross-sectional view of the tail switch assembly in gear position one provided in this embodiment of the utility model. Figure 2 ;

[0029] Figure 7 This is a cross-sectional view of the tail switch assembly in gear position two provided in this embodiment of the utility model. Figure 3 ;

[0030] Figure 8 This is a cross-sectional view of the tail switch assembly in gear three provided in this embodiment of the utility model. Figure 4 ;

[0031] Figure 9 This is a schematic diagram of the gear shift knob from one perspective provided in an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the gear shift knob from another perspective provided by an embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the tail cap structure provided in an embodiment of the present utility model;

[0034] Figure 12 yes Figure 2 Enlarged view of point A in the middle;

[0035] Figure 13 This is a top view of the tail switch assembly in gear position one provided in this embodiment of the utility model;

[0036] Figure 14 This is a top view of the tail switch assembly in gear position two provided in this embodiment of the utility model;

[0037] Figure 15 This is a top view of the tail switch assembly in gear position three provided in this embodiment of the utility model;

[0038] Figure 16 This is a schematic diagram of the structure of the second limiting ring provided in this embodiment of the utility model.

[0039] In the picture:

[0040] 100. Cylinder body; 200. Tail switch assembly;

[0041] 1. Tail cover; 10. Drive circuit board; 11. Top wall;

[0042] 2. Rotating component; 21. Reflective part; 22. Non-reflective part; 23. Extended section;

[0043] 3. Optocoupler switch; 31. Sensing surface;

[0044] 4. Adjustment knob; 41. First boss; 42. Receiving hole;

[0045] 5. First limiting ring;

[0046] 6. Positioning groove;

[0047] 7. Positioning component; 71. Elastic component; 72. Positioning ball;

[0048] 8. Second limiting ring; 81. Second boss;

[0049] 9. Sealing ring. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not 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 utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0054] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature 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 includes the first feature 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.

[0056] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0057] like Figures 1 to 16 As shown, this embodiment provides a flashlight, including a tube body 100 and a tail switch assembly 200 connected to the tube body 100. The tail switch assembly 200 is configured to drive a light-emitting component (not shown) inside the tube body 100 to switch its light-emitting mode. The "head" of the flashlight refers to the side with the light-emitting end, and the "tail" refers to the side with the handheld end. For ease of description, this embodiment uses... Figure 1 Taking the orientation shown as an example, the side closer to the light-emitting end is the bottom, and the side closer to the handheld end is the top. Furthermore, the light-emitting component inside the cylinder 100 is a mature existing technology in this field and will not be described in detail here.

[0058] The tail switch assembly 200 includes a tail cover 1, a rotating component 2, and an optocoupler switch 3.

[0059] The tail cap 1 is connected to the cylinder 100. A drive circuit board 10 is provided inside the tail cap 1. The drive circuit board 10 is connected to the light-emitting component.

[0060] The rotating part 2 is located inside the tail cover 1 and can rotate relative to the tail cover 1 around its own axis. A portion of the bottom surface of the rotating part 2 is configured as a reflective part 21, and the remaining portion is configured as a non-reflective part 22.

[0061] Optical coupler switch 3 is connected to the top surface of driver circuit board 10. The top surface of optical coupler switch 3 is sensing surface 31. Optical coupler switch 3 includes an on state and an off state. Reflective part 21 can face and cooperate with sensing surface 31 to make optical coupler switch 3 in the on state. Non-reflective part 22 can face and cooperate with sensing surface 31 to make optical coupler switch 3 in the off state.

[0062] The optocoupler switch 3 is an independent surface-mount electronic component consisting of a transmitter and a receiver. The transmitter emits light, and the receiver receives the reflected light. The sensing surface 31 includes the active terminals of both the transmitter and receiver. When the rotating member 2 rotates to a position where the reflective part 21 is opposite to the sensing surface 31 of the optocoupler switch 3, the light emitted from the sensing surface 31 is blocked by the reflective part 21, which then reflects the light back to the sensing surface 31. The reflected light is received by the sensing surface 31, thus turning on the optocoupler switch 3. When the rotating member 2 rotates to a position where the non-reflective part 22 is opposite to the sensing surface 31 of the optocoupler switch 3, the non-reflective part 22 cannot reflect the light emitted from the sensing surface 31, and the sensing surface 31 does not receive the reflected light, thus turning off the optocoupler switch 3. The on and off states of the optocoupler switch 3 can transmit different electrical signals to the light-emitting component via the drive circuit board 10, thereby putting the light-emitting component into different light-emitting modes.

[0063] The flashlight provided in this embodiment, by setting an optical coupler switch 3 and a rotating part 2 including a reflective part 21 and a non-reflective part 22 in the tail switch assembly 200, allows the user to switch the optical coupler switch 3 between the on and off states by rotating the rotating part 2, relying on the principle of light reflection. This enables the light-emitting component to switch between different light-emitting modes, realizing non-contact operation. It effectively avoids component wear caused by frequent contact and disconnection, and also avoids false triggering, being locked in a fixed lighting mode, or interference from multiple magnetic field sources caused by magnetic field interference. This allows the flashlight to accurately perform the expected function, which is beneficial to improving the working stability and reliability of the flashlight.

[0064] Optionally, the sensing surface 31 and the reflecting part 21 are parallel to each other, and the line connecting the centers of the planes of the sensing surface 31 and the reflecting part 21 extends along the axial direction of the rotating member 2. Of course, in other embodiments, the sensing surface 31 and the reflecting part 21 may also be at a certain angle, for example, the sensing surface 31 may be tilted at a certain angle, and the reflecting part 21 may also be tilted at a certain angle, as long as the cooperation between the sensing surface 31 and the reflecting part 21 can be satisfied, and this application does not make specific limitations here.

[0065] like Figures 5-8As shown, in some embodiments, multiple optocoupler switches 3 are provided, each optocoupler switch 3 including a sensing surface 31, and a reflective part 21 is configured to face at least one sensing surface 31. That is, when the rotating member 2 rotates to any position, the reflective part 21 faces the sensing surface 31 of at least one optocoupler switch 3, causing at least one optocoupler switch 3 to be turned on. With this configuration, the flashlight can be in multiple different power levels by the different relative positional relationships between the reflective part 21 and the multiple optocoupler switches 3, and each power level corresponds to a light-emitting mode of the light-emitting component.

[0066] like Figures 5-8 As shown, in this embodiment, there are two optocoupler switches 3. When the reflective part 21 is opposite to the sensing surface 31 of one of the optocoupler switches 3, the other optocoupler switch 3 is opposite to the non-reflective part 22. When the reflective part 21 is opposite to the sensing surface 31 of both optocoupler switches 3, the non-reflective part 22 is opposite to other positions on the top surface of the drive circuit board 10.

[0067] Specifically, for ease of description, it will be along... Figures 6-8 The first optocoupler switch 3 rotating counterclockwise is called the first switch, and the second optocoupler switch 3 is called the second switch. When the rotating part 2 is in its default initial position (i.e., position one), the reflector 21 is positioned above the first switch. Figure 6 The first switch receives reflected light and is in the ON state, while the second switch does not receive reflected light and is in the OFF state. The rotating part 2 rotates counterclockwise from position one to position two. At this time, the reflective part 21 is located above the first and second switches. Figure 7 Both the first and second switches can receive reflected light and are in the ON state, while the non-reflective part 22 is opposite to other positions on the top surface of the drive circuit board 10. Furthermore, the rotating part 2 continues to rotate counterclockwise, switching from position two to position three. At this time, the reflective part 21 is positioned above the second switch. Figure 8 The first switch has a non-reflective part 22 above it. The second switch can receive reflected light and is in the ON state, while the first switch cannot receive reflected light and is in the OFF state. Positions one, two, and three correspond to three light-emitting modes of the light-emitting component. For example, the light-emitting component in position one emits white light, the light-emitting component in position two emits IR light, and the light-emitting component in position three emits UV light.

[0068] Of course, in other embodiments, the optocoupler switch 3 can also be set to three, four, etc., depending on the actual situation. For example, when there are three optocoupler switches 3 (including the first switch, the second switch, and the third switch), as the rotating member 2 rotates, when only the first switch has a corresponding reflective part 21, it is position one; when the first and second switches have corresponding reflective parts 21, it is position two; when the first, second, and third switches all have corresponding reflective parts 21, it is position three; when the second and third switches have corresponding reflective parts 21, it is position four; and when only the third switch has a corresponding reflective part 21, it is position five. Positions one to five correspond to five different light emission modes of the light-emitting component, respectively.

[0069] like Figure 2 and Figure 12 As shown, in some embodiments, the tail switch assembly 200 further includes a gear adjustment knob 4, and the rotating member 2 includes an extension section 23 protruding from the top wall 11 of the tail cover 1. The gear adjustment knob 4 is sleeved and connected to the outer periphery of the extension section 23, and the gear adjustment knob 4 can drive the rotating member 2 to rotate.

[0070] With this setup, users can hold the gear shift knob 4 and drive the rotating component 2 to rotate by turning the gear shift knob 4. Compared to directly operating the rotating component 2, the gear shift knob 4 significantly increases the contact area for operation, making it easier for users to hold and apply force.

[0071] like Figure 9 and Figure 12 As shown, in some embodiments, the inner circumferential surface of the adjustment knob 4 is provided with a first protrusion 41, the inner circumferential surface of the first protrusion 41 abuts against the outer circumferential surface of the extension section 23, the top surface of the first protrusion 41 is pressed with a first limiting ring 5, and the first limiting ring 5 is fixedly connected to the outer circumferential surface of the extension section 23.

[0072] By setting the first limiting ring 5, the first limiting ring 5 can effectively stop the gear shift knob 4 from moving to the top side, which helps to improve the stability of the gear shift knob 4.

[0073] like Figure 12 As shown, in some embodiments, the gear shift knob 4 abuts against the top wall 11 of the tail cover 1. This arrangement allows the top wall 11 of the tail cover 1 to provide stable support for the gear shift knob 4, preventing any wobbling that may occur during rotation, thereby improving the smoothness and stability of the gear shift knob 4 during rotation.

[0074] like Figures 10-12 As shown, in some embodiments, the top wall 11 is provided with a positioning groove 6, and the bottom surface of the adjustment knob 4 is provided with a positioning member 7. The positioning member 7 can be engaged with the positioning groove 6 so that the reflective part 21 is kept opposite to at least one sensing surface 31.

[0075] Taking the aforementioned flashlight with three speed settings as an example, such as Figures 13-15 As shown, three positioning slots 6 are provided on the top wall 11, corresponding to three gear positions respectively. When the gear adjustment knob 4 is rotated to any positioning slot 6, the positioning member 7 is engaged in the positioning slot 6. During gear switching, the positioning member 7 will disengage from the previous positioning slot 6 and rotate synchronously with the gear adjustment knob 4 until it is engaged in the next positioning slot 6.

[0076] With this configuration, the engagement between the positioning element 7 and the positioning groove 6 provides a clear and precise gear positioning function for the gear shift knob 4, ensuring that the reflector 21 can accurately remain at the preset gear position and achieve a stable relative state with the sensing surface 31. Furthermore, when the user rotates the gear shift knob 4 to change gears, the positioning element 7 generates noticeable tactile and audible feedback (such as a "click") as it disengages from the previous positioning groove 6 and engages with the next, enhancing the user's perception of gear shifting.

[0077] like Figure 12 As shown, in some embodiments, the positioning member 7 includes an elastic member 71 and a positioning ball 72. The bottom surface of the adjustment knob 4 is provided with a receiving hole 42. The elastic member 71 is disposed inside the receiving hole 42. The positioning ball 72 is connected to one end of the elastic member 71 near the bottom opening of the receiving hole 42. The elastic member 71 always has an elastic tendency to make the positioning ball 72 extend out of the bottom opening of the receiving hole 42.

[0078] When the user rotates the gear shift knob 4, the positioning ball 72 maintains continuous contact with the top wall 11 under the elastic force of the elastic element 71, and gets stuck in the positioning groove 6 due to the elastic force, forming a stable gear position. Specifically, during gear shifting, as the gear shift knob 4 rotates, the positioning ball 72 first climbs from the lowest point of the current positioning groove 6 to the groove wall. During this process, the elastic element 71 is gradually compressed, and the positioning ball 72 retracts into the receiving hole 42. After the positioning ball 72 passes the highest point of the groove wall, under the elastic restoring force of the elastic element 71, the positioning ball 72 first maintains continuous contact with the top wall 11 between the two positioning grooves 6, and then falls into the next positioning groove 6 as the gear shift knob 4 rotates.

[0079] With this configuration, the positioning element 7 can smoothly transition between different positioning grooves 6, avoiding jamming or wear that may be caused by rigid snapping. Furthermore, the preload of the elastic element 71 ensures that the positioning ball 72 and the positioning groove 6 always maintain close contact, thereby effectively preventing accidental slippage of the gear position.

[0080] Optionally, the elastic element 71 can be set as a coil spring, a sheet spring, etc., without specific limitations.

[0081] like Figures 2-4As shown, in some embodiments, the distance between the reflective part 21 and the corresponding sensing surface 31 at each point is less than or equal to the receivable distance of the sensing surface 31, and the distance between the non-reflective part 22 and the corresponding sensing surface 31 at each point is greater than the receivable distance of the sensing surface 31.

[0082] This design, which uses distance difference to switch between reflective and non-reflective states, allows for precise control of distance parameters through mold processing, resulting in a simple and reliable structure. When the reflective part 21 maintains an effective distance from the sensing surface 31, the reflected signal can be stabilized; the non-reflective part 22, being outside the sensing range, can completely block the signal, thereby achieving clear gear switching and effectively avoiding signal interference and misjudgment.

[0083] In another possible embodiment, the distinction between the reflective portion 21 and the non-reflective portion 22 can be achieved without a distance difference. For example, a light-absorbing material (such as a black oxide coating or a carbon-based light-absorbing paint) can be provided at a position adjacent to the reflective portion 21. When light is projected onto this position, it will be absorbed by the light-absorbing material and will not be reflected. The part where the light-absorbing material is provided is the non-reflective portion 22.

[0084] like Figure 2 and Figure 16 As shown, in some embodiments, a second limiting ring 8 is fixedly connected to the inner peripheral wall of the tail cover 1, and a second protrusion 81 is provided on the inner peripheral surface of the second limiting ring 8. The drive circuit board 10 is supported on the top surface of the second protrusion 81. That is, the second protrusion 81 provides support for the drive circuit board 10 through its top surface and acts as a stop to prevent the drive circuit board 10 from moving to the bottom side, which helps to improve the stability of the drive circuit board 10.

[0085] like Figure 2 As shown, in some embodiments, a sealing ring 9 is provided between the rotating component 2 and the inner peripheral wall of the tail cover 1. The sealing ring 9 can tightly fill the gap between the rotating component 2 and the inner peripheral wall of the tail cover 1, forming a physical barrier, effectively blocking the leakage of light between the optocoupler switch 3 and the reflector 21, and also preventing false triggering caused by external light signal interference.

[0086] Optionally, multiple sealing rings 9 can be provided. The specific configuration depends on the structure of the rotating part 2 and the tail cap 1, and is not specifically limited here.

[0087] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A flashlight, characterized in that, The device includes a cylindrical body (100) and a tail switch assembly (200) connected to the cylindrical body (100). The tail switch assembly (200) is configured to drive a light-emitting component inside the cylindrical body (100) to switch its light-emitting mode. The tail switch assembly (200) includes: Tail cap (1) is connected to the cylinder (100). A drive circuit board (10) is provided inside the tail cap (1). The drive circuit board (10) is connected to the light-emitting component. A rotating component (2) is partially disposed inside the tail cap (1) and is capable of rotating relative to the tail cap (1) about its own axis. A portion of the bottom surface of the rotating component (2) is configured as a reflective part (21), and the remaining portion is configured as a non-reflective part (22). An optocoupler switch (3) is connected to the top surface of the drive circuit board (10). The top surface of the optocoupler switch (3) is a sensing surface (31). The optocoupler switch (3) includes an on state and an off state. The reflective part (21) is able to face the sensing surface (31) and cooperate with the sensing surface (31) to make the optocoupler switch (3) be in the on state. The non-reflective part (22) is able to face the sensing surface (31) and cooperate with the sensing surface (31) to make the optocoupler switch (3) be in the off state.

2. The flashlight according to claim 1, characterized in that, Multiple optocoupler switches (3) are provided, each optocoupler switch (3) includes the sensing surface (31), and the reflective part (21) is configured to be opposite to at least one of the sensing surfaces (31).

3. The flashlight according to claim 2, characterized in that, The tail switch assembly (200) also includes a gear adjustment knob (4), and the rotating component (2) includes an extension section (23) protruding from the top wall (11) of the tail cover (1). The gear adjustment knob (4) is sleeved and connected to the outer periphery of the extension section (23), and the gear adjustment knob (4) can drive the rotating component (2) to rotate.

4. The flashlight according to claim 3, characterized in that, The inner circumferential surface of the adjustment knob (4) is provided with a first protrusion (41), the inner circumferential surface of the first protrusion (41) abuts against the outer circumferential surface of the protruding section (23), the top surface of the first protrusion (41) is pressed with a first limiting ring (5), and the first limiting ring (5) is fixedly connected to the outer circumferential surface of the protruding section (23).

5. The flashlight according to claim 3, characterized in that, The gear shift knob (4) abuts against the top wall (11) of the tail cover (1).

6. The flashlight according to claim 5, characterized in that, The top wall (11) is provided with a positioning groove (6), and the bottom surface of the adjustment knob (4) is provided with a positioning element (7). The positioning element (7) can be engaged with the positioning groove (6) so that the reflective part (21) is kept opposite to at least one of the sensing surfaces (31).

7. The flashlight according to claim 6, characterized in that, The positioning element (7) includes an elastic element (71) and a positioning ball (72). The bottom surface of the adjustment knob (4) is provided with a receiving hole (42). The elastic element (71) is disposed inside the receiving hole (42). The positioning ball (72) is connected to one end of the elastic element (71) near the bottom opening of the receiving hole (42). The elastic element (71) always has an elastic tendency to make the positioning ball (72) extend out of the bottom opening of the receiving hole (42).

8. The flashlight according to any one of claims 2 to 7, characterized in that, The distance between each point of the reflective part (21) facing the corresponding sensing surface (31) and the sensing surface (31) is less than or equal to the receivable distance of the sensing surface (31), while the distance between each point of the non-reflective part (22) facing the corresponding sensing surface (31) and the sensing surface (31) is greater than the receivable distance of the sensing surface (31).

9. The flashlight according to any one of claims 2 to 7, characterized in that, The inner peripheral wall of the tail cap (1) is fixedly connected to a second limiting ring (8), and the inner peripheral surface of the second limiting ring (8) is provided with a second boss (81). The drive circuit board (10) is supported on the top surface of the second boss (81).

10. The flashlight according to any one of claims 2 to 7, characterized in that, A sealing ring (9) is provided between the rotating part (2) and the inner peripheral wall of the tail cover (1).

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