flashlight

Abstract

This utility model belongs to the technical field of lighting equipment and discloses a flashlight. Its head switch assembly includes: a lamp holder connected to the flashlight body; a light-emitting component connected to the bottom of the lamp holder; a rotating component sleeved and connected to the outer periphery of the lamp holder and capable of rotating relative to the lamp holder around its own axis, with a reflective portion provided on its inner peripheral wall; and an optocoupler switch connected to the lamp holder and signal-connected to the light-emitting component, with the sensing surface of the optocoupler switch facing the inner peripheral wall of the rotating component. The optocoupler switch has an on state and an off state. When the rotating component rotates to a first position, the reflective portion and the sensing surface face each other, and the sensing surface can cooperate with the reflective portion to put the optocoupler switch in the on state. When the rotating component rotates to a second position, the reflective portion and the sensing surface are misaligned, and the sensing surface is configured so that it cannot cooperate with the reflective portion to put the optocoupler switch in the off state. This utility model helps to improve 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 head switch assembly connected to the tube body; the head switch assembly includes:

[0008] The lamp holder is connected to the cylinder.

[0009] A light-emitting component is connected to the bottom of the lamp holder and has a first light-emitting mode and a second light-emitting mode;

[0010] A rotating component is sleeved and connected to the outer periphery of the lamp holder and can rotate relative to the lamp holder about its own axis. A reflective part is provided on the inner peripheral wall of the rotating component. The rotating component has a first position and a second position.

[0011] An optocoupler switch is connected to the lamp holder and signal-connected to the light-emitting component. The sensing surface of the optocoupler switch is disposed facing the inner peripheral wall of the rotating member. The optocoupler switch has an on state and an off state. The on state corresponds to the first light-emitting mode, and the off state corresponds to the second light-emitting mode. When the rotating member rotates to the first position, the reflective part is opposite to the sensing surface, and the sensing surface can cooperate with the reflective part to put the optocoupler switch in the on state. When the rotating member rotates to the second position, the reflective part and the sensing surface are misaligned, and the sensing surface is configured not to cooperate with the reflective part to put the optocoupler switch in the off state.

[0012] In some embodiments, the lamp holder includes a bottom wall and a circumferential side wall, with a receiving space formed between the bottom wall and the circumferential side wall. A through hole is provided in the circumferential side wall. The optocoupler switch is disposed in the receiving space with the sensing surface facing the through hole. When the rotating member rotates to the first position, the reflective part, the through hole, and the sensing surface are aligned. When the rotating member rotates to the second position, the reflective part is opposite to the outer surface of the circumferential side wall.

[0013] In some embodiments, a non-reflective portion is further provided on the inner peripheral wall of the rotating member. The non-reflective portion and the reflective portion are arranged adjacent to each other along the circumference of the rotating member. When the rotating member is in the second position, the non-reflective portion, the through hole, and the sensing surface are aligned.

[0014] In some embodiments, the non-reflective portion is configured as a groove portion, and the distance between each point on the surface of the groove portion facing the sensing surface and the sensing surface is greater than the receptive distance of the sensing surface.

[0015] In some embodiments, a rotation limiting structure is provided between the rotating member and the lamp holder, the rotation limiting structure being used to restrict the rotating member from rotating and switching between the first position and the second position.

[0016] In some embodiments, the rotation limiting structure includes a stop and a limiting groove. A first boss is provided on the outer surface of the circumferential sidewall of the lamp holder, and the limiting groove is provided at the bottom of the first boss. The limiting groove extends circumferentially along the lamp holder. A second boss is provided on the inner circumferential wall of the rotating member. The stop is connected to the second boss and partially protrudes from the top surface of the second boss. The portion of the stop protruding from the top surface of the second boss can stop at the first or second end of the limiting groove along the circumferential direction of the lamp holder.

[0017] In some embodiments, the head switch assembly further includes a limiting member sleeved and connected to the outer periphery of the bottom wall of the lamp holder, the first boss extending circumferentially along the lamp holder, the second boss extending circumferentially along the rotating member, and the second boss being configured to be sandwiched between the bottom surface of the first boss and the top surface of the limiting member.

[0018] In some embodiments, a fixing member is provided within the accommodating space, the fixing member being detachably connected to the bottom wall of the lamp holder, and the optocoupler switch is connected to the fixing member.

[0019] In some embodiments, the optocoupler switch includes a switch body and an optocoupler circuit board, the switch body is connected to the optocoupler circuit board, the sensing surface is disposed on the switch body, and the optocoupler circuit board is detachably connected to the fixing member.

[0020] In some embodiments, the head switch assembly further includes a drive circuit board disposed at the top opening of the lamp holder, a bearing step is provided on the inner surface of the circumferential sidewall of the lamp holder, the drive circuit board abuts against the top surface of the bearing step, a fixing ring is pressed on the top surface of the drive circuit board, the optocoupler switch is electrically connected to the drive circuit board, and the drive circuit board is electrically connected to the light-emitting component.

[0021] The beneficial effects of this utility model are:

[0022] The flashlight provided by this utility model, by setting an optical coupler switch and a rotating part with a reflector in the head switch assembly, enables the light-emitting component to switch between the first light-emitting mode and the second light-emitting mode by relying on the principle of light reflection. This achieves non-contact operation, effectively avoids component wear caused by frequent contact and disconnection, and also avoids false triggering, being locked in a fixed lighting mode, or interference between 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. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a three-dimensional structural diagram of the flashlight provided in this embodiment of the utility model;

[0025] Figure 2 This is an exploded view of the flashlight provided in this embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the head switch assembly provided in this embodiment of the utility model;

[0027] Figure 4 This is a cross-sectional view of the head switch assembly provided in this embodiment of the utility model. Figure 1 ;

[0028] Figure 5 This is a cross-sectional view of the head switch assembly of the rotating member in the first position according to an embodiment of the present invention. Figure 2 ;

[0029] Figure 6 This is a cross-sectional view of the head switch assembly of the rotating member in the second position according to an embodiment of the present invention. Figure 3 ;

[0030] Figure 7 This is a schematic diagram of the rotating component from one perspective provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the rotating component from another perspective provided in this embodiment of the utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the lamp holder provided in this embodiment of the utility model;

[0033] Figure 10 This is a schematic diagram of the structure of the optocoupler switch and the fixing component from one perspective provided in an embodiment of this utility model;

[0034] Figure 11 This is a schematic diagram of the structure of the optocoupler switch and the fixing component from another perspective provided by an embodiment of this utility model;

[0035] Figure 12 This is an exploded view of the fixing ring and lamp holder provided in an embodiment of this utility model.

[0036] In the picture:

[0037] 100. Cylinder body; 200. Head switch assembly;

[0038] 1. Lamp holder; 11. Bottom wall; 12. Circumferential side wall; 121. Through hole; 122. First boss; 123. Supporting step; 13. Accommodation space;

[0039] 2. Light-emitting component; 21. Light source; 22. Light guide; 23. Diffuser plate;

[0040] 3. Rotating component; 31. Reflective part; 32. Groove part; 33. Second boss;

[0041] 4. Optocoupler switch; 41. Sensing surface; 42. Switch body; 43. Optocoupler circuit board;

[0042] 5. Rotational limiting structure; 51. Stop; 52. Limiting groove; 521. First end; 522. Second end;

[0043] 6. Limiting components;

[0044] 7. Fasteners;

[0045] 8. Driver circuit board;

[0046] 9. Fixing ring. Detailed Implementation

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] like Figures 1-12 As shown, this embodiment provides a flashlight, including a body 100 and a head switch assembly 200 connected to the body 100. 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. Furthermore, 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.

[0055] The head switch assembly 200 includes a lamp holder 1, a light-emitting component 2, a rotating component 3, and an optocoupler switch 4.

[0056] Lamp holder 1 is connected to cylinder 100. Light-emitting component 2 is connected to the bottom of lamp holder 1 and has a first light-emitting mode and a second light-emitting mode. Rotating component 3 is sleeved and connected to the outer periphery of lamp holder 1 and can rotate relative to lamp holder 1 around its own axis. A reflective part 31 is provided on the inner peripheral wall of rotating component 3. Rotating component 3 has a first position and a second position. Optical coupler switch 4 is connected to lamp holder 1 and signal connected to light-emitting component 2. The sensing surface 41 of optical coupler switch 4 is set facing the inner peripheral wall of rotating component 3. Optical coupler switch 4 has an on state and an off state. The on state corresponds to the first light-emitting mode, and the off state corresponds to the second light-emitting mode. That is, when optical coupler switch 4 is on, light-emitting component 2 is in the first light-emitting mode, and when optical coupler switch 4 is off, light-emitting component 2 is in the second light-emitting mode.

[0057] When the rotating member 3 rotates to the first position, the reflective part 31 is opposite to the sensing surface 41, and the sensing surface 41 can cooperate with the reflective part 31 to put the optocoupler switch 4 into the on state. When the rotating member 3 rotates to the second position, the reflective part 31 and the sensing surface 41 are misaligned, and the sensing surface 41 is configured so that it cannot cooperate with the reflective part 31 to put the optocoupler switch 4 into the off state.

[0058] The optocoupler switch 4 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 41 includes the active terminals of both the transmitter and receiver. When the rotating member 3 is in the first position, the light emitted from the sensing surface 41 is blocked by the reflector 31, which then reflects the light back to the sensing surface 41. The reflected light is received by the sensing surface 41, at which point the optocoupler switch 4 is turned on, and the light-emitting component 2 is in the first light-emitting mode. When the rotating member 3 is in the second position, the reflector 31 cannot receive and reflect the light emitted from the sensing surface 41, and the sensing surface 41 does not receive the reflected light. At this point, the optocoupler switch 4 is turned off, and the light-emitting component 2 is in the second light-emitting mode.

[0059] For example, in the first light-emitting mode, the light-emitting component 2 emits white light (or green light, blue light, etc.), and in the second light-emitting mode, the light-emitting component 2 emits IR light (or red light, UV light, etc.).

[0060] The flashlight provided in this embodiment, by setting an optocoupler switch 4 and a rotating part 3 with a reflector 31 in the head switch assembly 200, enables the light-emitting component 2 to switch between the first light-emitting mode and the second light-emitting mode by relying on the principle of light reflection. This achieves non-contact operation, effectively avoids component wear caused by frequent contact and disconnection, and prevents false triggering, being locked in a fixed lighting mode, or interference between 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.

[0061] like Figures 4-9 As shown, in some embodiments, the lamp holder 1 includes a bottom wall 11 and a circumferential side wall 12, forming a receiving space 13 between the bottom wall 11 and the circumferential side wall 12. A through hole 121 is formed in the circumferential side wall 12. The optocoupler switch 4 is disposed within the receiving space 13 with its sensing surface 41 facing the through hole 121. When the rotating member 3 rotates to the first position, the reflector 31, the through hole 121, and the sensing surface 41 are aligned (e.g., ...). Figure 5 At this time, the light emitted from the sensing surface 41 can reach the reflecting part 31 and be reflected back to the sensing surface 41 by the reflecting part 31, thus turning on the optocoupler switch 4. When the rotating part 3 rotates to the second position, the reflecting part 31 is opposite to the outer surface of the circumferential sidewall 12 (e.g., Figure 6 At this time, the light emitted from the sensing surface 41 cannot reach the reflecting part 31, so the sensing surface 41 cannot receive the reflected light, causing the optocoupler switch 4 to not be turned on.

[0062] With this arrangement, the optocoupler switch 4 is located in the housing space 13 inside the lamp holder 1, and the reflection of light is achieved by changing the relative position of the through hole 121 and the reflector 31. In this way, the optocoupler switch 4 does not occupy additional space outside the lamp holder 1, which is conducive to the rational use of space and reduces the overall size of the head switch assembly 200.

[0063] like Figure 4 , Figure 10 and Figure 11 As shown, in some embodiments, a fixing member 7 is provided within the accommodating space 13. The fixing member 7 is detachably connected to the bottom wall 11 of the lamp holder 1, and the optocoupler switch 4 is connected to the fixing member 7. With this arrangement, the fixing member 7 provides a stable mounting carrier for the optocoupler switch 4, improving the stability of the optocoupler switch 4.

[0064] like Figure 10 As shown, in some embodiments, the optocoupler switch 4 includes a switch body 42 and an optocoupler circuit board 43. The switch body 42 is connected to the optocoupler circuit board 43, the sensing surface 41 is disposed on the switch body 42, and the optocoupler circuit board 43 is detachably connected to the fixing member 7.

[0065] This design enables the modular design of the optocoupler switch 4. When the optocoupler switch 4 malfunctions, it can be quickly repaired or replaced simply by disassembling the optocoupler circuit board 43, which significantly improves the maintainability and service life of the product.

[0066] Optionally, the optocoupler circuit board 43 is detachably connected to the fixing member 7 by bolts, and the fixing member 7 can also be detachably connected to the bottom wall 11 of the lamp holder 1 by bolts. The bolt connection structure is simple and has high connection strength and reliability.

[0067] Optionally, such as Figure 5 As shown, the sensing surface 41 and the reflecting part 31 are parallel to each other, and the line connecting the centers of the planes of the sensing surface 41 and the reflecting part 31 extends radially along the lamp holder 1 and the rotating member 3. Of course, in other embodiments, the sensing surface 41 and the reflecting part 31 may also be at a certain angle, for example, the sensing surface 41 may be tilted at a certain angle, and the reflecting part 31 may also be tilted at a certain angle, as long as the cooperation between the sensing surface 41 and the reflecting part 31 can be satisfied, this application does not make specific limitations here.

[0068] In this embodiment, the number of optocoupler switches 4 is set to one. In other possible embodiments, the number of optocoupler switches 4 can also be set to multiple, such as two or three, depending on the actual situation. As long as the cooperation between the optocoupler switch 4 and the reflector 31 can be satisfied.

[0069] For example, taking two optocoupler switches 4 as an example, both optocoupler switches 4 are provided with sensing surfaces 41. When the rotating member 3 rotates to the first position, the reflective part 31 is opposite to at least one sensing surface 41. At this time, at least one optocoupler switch 4 is in the on state, and the light-emitting component 2 is in the first light-emitting mode. When the rotating member 3 rotates to the second position, the reflective part 31 is misaligned with both sensing surfaces 41, and neither sensing surface 41 can receive reflected light. At this time, both optocoupler switches 4 are in the off state, and the light-emitting component 2 is in the second light-emitting mode.

[0070] Furthermore, in some embodiments, the first light-emitting mode with two optocoupler switches 4 can be further refined into multiple levels. For ease of description, one of the two optocoupler switches 4 is referred to as the first switch, and the other as the second switch. When the rotating member 3 is in the initial position (i.e., level one), the reflective part 31 is only opposite to the sensing surface 41 of the first switch. At this time, the first switch is in the ON state, and the second switch is in the OFF state. As the rotating member 3 continues to rotate from the initial position, it can further switch to level two. At this time, the reflective part 31 is opposite to the sensing surfaces 41 of both the first and second switches, and both the first and second switches are in the ON state. As the rotating member 3 continues to rotate, it can further switch from level two to level three. In level three, the reflective part 31 is only opposite to the sensing surface 41 of the second switch. At this time, the second switch is in the ON state, and the first switch is in the OFF state. For example, the light-emitting component 2 emits white light in level one, green light in level two, and blue light in level three.

[0071] Similarly, when there are two or more optocoupler switches 4, multiple settings can be achieved by having the reflector 31 face at least one sensing surface 41.

[0072] like Figure 4 and Figure 12 As shown, in some embodiments, the head switch assembly 200 further includes a drive circuit board 8, which is disposed at the top opening of the lamp holder 1. A bearing step 123 is provided on the inner surface of the circumferential sidewall 12 of the lamp holder 1. The drive circuit board 8 abuts against the top surface of the bearing step 123. A fixing ring 9 is pressed onto the top surface of the drive circuit board 8. An optocoupler switch 4 is electrically connected to the drive circuit board 8, and the drive circuit board 8 is electrically connected to the light-emitting component 2. That is, the optocoupler switch 4 transmits signals to the drive circuit board 8, which then transmits them to the light-emitting component 2 to control different light-emitting modes of the light-emitting component 2.

[0073] With this configuration, the driver circuit board 8 can process, amplify, and optimize the signal transmitted by the optocoupler switch 4, ensuring stable signal transmission and preventing malfunctions in switching the flashlight's illumination mode due to signal attenuation or interference. Furthermore, the clamping action of the retaining ring 9 prevents the driver circuit board 8 from loosening due to vibration or external force, ensuring the stability of the circuit connection, thereby improving the reliability of the flashlight's illumination mode switching and extending the flashlight's lifespan.

[0074] like Figure 4 As shown, in some embodiments, the light-emitting component 2 includes a light source 21, a light guide 22, and a diffuser plate 23. The light source 21 is connected to the bottom of the bottom wall 11, and the light guide 22 and the diffuser plate 23 are sequentially connected to the bottom of the light source 21. The light emitted by the light source 21 is guided by the light guide 22 and finally diffused out through the diffuser plate 23.

[0075] Specifically, the light source 21 includes a light source circuit board and LED beads. The light source circuit board is connected to the bottom of the bottom wall 11, and the LED beads are disposed on the light source circuit board with their light-emitting surfaces facing the bottom. The driving circuit board is responsible for providing stable current and voltage to the LED beads and can precisely adjust the brightness and color of the LED beads. In addition, the light-emitting component 2 also includes auxiliary components such as heat sinks and insulating supports. Since these are mature existing technologies in this field, they will not be described in detail in this application.

[0076] like Figures 5-8 As shown, in some embodiments, a non-reflective portion 32 is also provided on the inner peripheral wall of the rotating member 3. The non-reflective portion 32 and the reflective portion 31 are arranged adjacent to each other along the circumference of the rotating member 3. When the rotating member 3 is in the second position, the non-reflective portion 32, the through hole 121, and the sensing surface 41 are aligned. With this arrangement, in the second position, the non-reflective portion 32 cannot reflect the light emitted by the sensing surface 41, and the sensing surface 41 does not receive reflected light, causing the optocoupler switch 4 to be disconnected. This ensures the stable disconnected state of the optocoupler switch 4 in the second position, avoiding accidental light reflection by other structures besides the reflective portion 31, which could lead to the optocoupler switch 4 being mistakenly turned on. This is beneficial to improving the accuracy and reliability of switching between different light emission modes of the flashlight.

[0077] like Figures 5-8 As shown, in some embodiments, the non-reflective portion 32 is configured as a recessed portion, and the distance between each point of the recessed portion facing the sensing surface 41 and the sensing surface 41 is greater than the receivable distance of the sensing surface 41. With this configuration, the non-reflective portion 32, being outside the sensing range, can completely block the signal. This structural design, which achieves switching between reflective and non-reflective states through distance difference, allows for precise control of distance parameters using mold processing. The structure is simple and reliable, enabling clear gear switching.

[0078] Furthermore, in some embodiments, a light-absorbing material (not shown in the figure) is provided on the surface of the groove facing the sensing surface 41.

[0079] By incorporating light-absorbing material in the groove, a dual protection mechanism is formed by the distance design between the groove and the sensing surface 41. On the one hand, it can absorb trace amounts of reflected light caused by scattering, refraction, or manufacturing tolerances, compensating for actual errors in theoretical distance control; on the other hand, it can effectively isolate interference caused by external ambient light reflected from the groove, further eliminating the risk of false triggering of the optocoupler switch 4.

[0080] Optionally, the light-absorbing material can be a black oxide coating or a carbon-based light-absorbing coating, or it can be a velvet cloth or a light-absorbing film. This application does not make any specific limitations here.

[0081] In another possible embodiment, the distinction between the reflective portion 31 and the non-reflective portion 32 can be achieved without a distance difference. For example, a light-absorbing material can be placed directly at a position adjacent to the reflective portion 31. When light is projected onto this position, it will be absorbed by the light-absorbing material and cannot be reflected. The position where the light-absorbing material is placed is the non-reflective portion 32.

[0082] like Figures 7-9 As shown, in some embodiments, a rotation limiting structure 5 is provided between the rotating member 3 and the lamp holder 1. The rotation limiting structure 5 is used to restrict the rotating member 3 from rotating and switching between the first position and the second position.

[0083] By setting the rotation limit structure 5, the rotating part 3 can be prevented from rotating incompletely or excessively, ensuring that the rotating part 3 is always within the effective working range. At the same time, the rotation limit structure 5 can also help users obtain clear gear feedback during operation, which is conducive to improving the convenience and reliability of use.

[0084] like Figures 7-9 As shown, in some embodiments, the rotation limiting structure 5 includes a stop member 51 and a limiting groove 52. A first boss 122 is provided on the outer surface of the circumferential sidewall 12 of the lamp holder 1. A limiting groove 52 is formed at the bottom of the first boss 122, extending circumferentially along the lamp holder 1. A second boss 33 is provided on the inner circumferential wall of the rotating member 3. The stop member 51 is connected to the second boss 33 and partially protrudes from the top surface of the second boss 33. The portion of the stop member 51 protruding from the top surface of the second boss 33 can stop at either the first end 521 or the second end 522 of the limiting groove 52 along the circumferential direction of the lamp holder 1. For example, when the portion of the stop member 51 protruding from the top surface of the second boss 33 stops at the first end 521, the rotating member 3 is in a first position; when the portion of the stop member 51 protruding from the top surface of the second boss 33 stops at the second end 522, the rotating member 3 is in a second position.

[0085] With this design, the rotary limiting structure 5 has a simple structure and is easy to process, which can not only reduce processing difficulty and cost, but also improve production efficiency.

[0086] Optionally, the stop 51 is a screw, with the head of the screw positioned within the limiting groove 52. Of course, in other embodiments, the stop 51 can also be other structures, such as a stop rod or a stop block, depending on the specific circumstances.

[0087] Optionally, the second boss 33, the reflective part 31, and the groove part 32 can be disposed at the same height position along the axial direction of the rotating member 3.

[0088] like Figure 4As shown, in some embodiments, the head switch assembly 200 further includes a limiting member 6, which is sleeved and connected to the outer periphery of the bottom wall 11 of the lamp holder 1. The first boss 122 extends along the circumference of the lamp holder 1, and the second boss 33 extends along the circumference of the rotating member 3. The second boss 33 is configured to be sandwiched between the bottom surface of the first boss 122 and the top surface of the limiting member 6.

[0089] With this configuration, the second protrusion 33 is securely clamped between the top surface of the limiting member 6 and the bottom surface of the first protrusion 122, effectively limiting the displacement of the rotating member 3 in the axial direction and preventing the rotating member 3 from moving up and down along the axial direction during use. This ensures that the cooperation between the optocoupler switch 4 and the reflector 31 is not affected by axial offset, which is beneficial to improving the stability and reliability of the light emission mode switching.

[0090] 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, Includes a cylindrical body (100) and a head switch assembly (200) connected to the cylindrical body (100); the head switch assembly (200) includes: Lamp holder (1), connected to the cylinder (100); The light-emitting component (2) is connected to the bottom of the lamp holder (1) and has a first light-emitting mode and a second light-emitting mode; A rotating component (3) is sleeved and connected to the outer periphery of the lamp holder (1) and can rotate relative to the lamp holder (1) around its own axis. A reflective part (31) is provided on the inner peripheral wall of the rotating component (3). The rotating component (3) has a first position and a second position. An optocoupler switch (4) is connected to the lamp holder (1) and signal-connected to the light-emitting component (2). The sensing surface (41) of the optocoupler switch (4) is disposed facing the inner peripheral wall of the rotating member (3). The optocoupler switch (4) has an on state and an off state. The on state corresponds to the first light-emitting mode, and the off state corresponds to the second light-emitting mode. When the rotating member (3) rotates to the first position, the reflective part (31) is opposite to the sensing surface (41), and the sensing surface (41) can cooperate with the reflective part (31) to make the optocoupler switch (4) be in the on state. When the rotating member (3) rotates to the second position, the reflective part (31) and the sensing surface (41) are misaligned, and the sensing surface (41) is configured to not cooperate with the reflective part (31) to make the optocoupler switch (4) be in the off state.

2. The flashlight according to claim 1, characterized in that, The lamp holder (1) includes a bottom wall (11) and a circumferential side wall (12). A receiving space (13) is formed between the bottom wall (11) and the circumferential side wall (12). A through hole (121) is provided in the circumferential side wall (12). The optocoupler switch (4) is disposed in the receiving space (13) and the sensing surface (41) faces the through hole (121). When the rotating member (3) rotates to the first position, the reflective part (31), the through hole (121) and the sensing surface (41) are aligned. When the rotating member (3) rotates to the second position, the reflective part (31) is opposite to the outer surface of the circumferential side wall (12).

3. The flashlight according to claim 2, characterized in that, The inner peripheral wall of the rotating member (3) is also provided with a non-reflective part (32). The non-reflective part (32) and the reflective part (31) are arranged adjacent to each other along the circumference of the rotating member (3). When the rotating member (3) is in the second position, the non-reflective part (32), the through hole (121) and the sensing surface (41) are aligned.

4. The flashlight according to claim 3, characterized in that, The non-reflective portion (32) is configured as a groove portion, and the distance between each point of the groove portion facing the sensing surface (41) and the sensing surface (41) is greater than the receivable distance of the sensing surface (41).

5. The flashlight according to claim 2, characterized in that, A rotation limiting structure (5) is provided between the rotating component (3) and the lamp holder (1). The rotation limiting structure (5) is used to restrict the rotating component (3) from rotating and switching between the first position and the second position.

6. The flashlight according to claim 5, characterized in that, The rotation limiting structure (5) includes a stop (51) and a limiting groove (52). The outer surface of the circumferential sidewall (12) of the lamp holder (1) is provided with a first boss (122). The bottom of the first boss (122) is provided with the limiting groove (52). The limiting groove (52) extends along the circumference of the lamp holder (1). The inner circumferential wall of the rotating member (3) is provided with a second boss (33). The stop (51) is connected to the second boss (33) and partially protrudes from the top surface of the second boss (33). The part of the stop (51) protruding from the top surface of the second boss (33) can stop the limiting groove (52) at the first end (521) or the second end (522) along the circumference of the lamp holder (1).

7. The flashlight according to claim 6, characterized in that, The head switch assembly (200) further includes a limiting member (6), which is sleeved and connected to the outer periphery of the bottom wall (11) of the lamp holder (1). The first boss (122) extends along the circumference of the lamp holder (1), and the second boss (33) extends along the circumference of the rotating member (3). The second boss (33) is configured to be sandwiched between the bottom surface of the first boss (122) and the top surface of the limiting member (6).

8. The flashlight according to any one of claims 2 to 7, characterized in that, A fixing member (7) is provided in the accommodating space (13). The fixing member (7) is detachably connected to the bottom wall (11) of the lamp holder (1). The optocoupler switch (4) is connected to the fixing member (7).

9. The flashlight according to claim 8, characterized in that, The optocoupler switch (4) includes a switch body (42) and an optocoupler circuit board (43). The switch body (42) is connected to the optocoupler circuit board (43). The sensing surface (41) is disposed on the switch body (42). The optocoupler circuit board (43) is detachably connected to the fixing member (7).

10. The flashlight according to any one of claims 2 to 7, characterized in that, The head switch assembly (200) further includes a drive circuit board (8), which is disposed at the top opening of the lamp holder (1). The inner surface of the circumferential sidewall (12) of the lamp holder (1) is provided with a bearing step (123). The drive circuit board (8) abuts against the top surface of the bearing step (123). A fixing ring (9) is pressed on the top surface of the drive circuit board (8). The optocoupler switch (4) is electrically connected to the drive circuit board (8). The drive circuit board (8) is electrically connected to the light-emitting component (2).

Images