A diving flashlight

Abstract

This utility model discloses a diving flashlight. The diving flashlight of this utility model includes a main shell, a rotating component, a movable component, a light source, and a focusing lens. The rotating component is rotatably fitted onto the outer periphery of the front section. The movable component is disposed within a receiving cavity and is threadedly connected to the rotating component. The movable component can move axially relative to the main shell, while the rotating component rotates around the central axis of the main shell, allowing the movable component to move axially within the receiving cavity, thereby changing the distance between the light source and the focusing lens. By setting an axially movable component inside the main shell and placing the light source on the movable component, and utilizing the threaded connection between the rotating component and the movable component, the movable component moves back and forth within the main shell while the rotating component only rotates relative to the main shell. This transfers axial movement to the internal space, while the external structure only rotates, allowing for better arrangement of the waterproof structure and effectively improving waterproof performance.

Description

Technical Field

[0001] This utility model relates to the field of flashlight technology, specifically to a diving flashlight. Background Technology

[0002] Flashlights are widely used due to their advantages such as being lightweight and easy to carry. Currently, many variable-focus flashlights have emerged, which adjust the illumination area and brightness of the emitted light by changing the distance between the light source and the lens. In the field of diving, variable-focus flashlights are also needed to meet the needs of different underwater scenarios. However, variable-focus flashlights for diving have the problem of poor waterproof performance. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a diving flashlight that features zoom capability while improving waterproof performance.

[0004] A diving flashlight according to an embodiment of the present invention includes a main housing, a rotating component, a movable component, a light source, and a focusing lens. The main housing includes a front section and a rear section, the front section having a receiving cavity, and the rear section for gripping. The rotating component is sleeved on the outer periphery of the front section. The movable component is disposed within the receiving cavity, and is threadedly connected to the rotating component. The movable component can move axially back and forth relative to the main housing. The light source is fixed to the movable component, and the focusing lens is fixed to the rotating component. The rotating component rotates around the central axis of the main housing, causing the movable component to move axially back and forth within the receiving cavity, thereby changing the distance between the light source and the focusing lens.

[0005] The diving flashlight according to the present invention has at least the following beneficial effects: In related technologies, adjustable-focus flashlights typically connect a focusing lens to a movable component that is fitted outside the main housing and can move back and forth relative to the main housing. The focusing lens is then moved back and forth by rotating or pushing the movable component, thereby changing the distance between it and the light source to achieve focusing. However, this structure alters the axial relative position of the flashlight's external structure, and the axial relative movement between the main housing and the movable component results in poor waterproof performance. The diving flashlight of the present invention, by setting an axially movable component inside the main housing and placing the light source on the movable component, and using a threaded connection between a rotating component and the movable component, allows the movable component to move back and forth inside the main housing while the rotating component only rotates relative to the main housing. This transfers the axial movement to the internal space, while the external structure only rotates, allowing for better arrangement of the waterproof structure and effectively improving waterproof performance.

[0006] According to some embodiments of the present invention, the flashlight further includes a pressure ring connected to the front section. The pressure ring has a first abutting surface that extends radially outward relative to the front section. The first abutting surface is used to abut against the rotating member to restrict the rotating member from moving axially back and forth relative to the main housing.

[0007] According to some embodiments of the present invention, the pressure ring is sleeved on the outer periphery of the front section, and the inner peripheral wall of the pressure ring is threadedly connected to the outer peripheral surface of the front section to restrict the rotating member from moving along the axis and disengaging from the front section.

[0008] According to some embodiments of the present invention, the pressure ring includes a first main body, a first protrusion, and a second protrusion. The first main body is threadedly connected to the outer peripheral surface of the front section. The first protrusion extends radially away from the front section relative to the first main body. The second protrusion extends radially toward the central axis of the front section relative to the first main body. A first abutting surface is disposed on the first protrusion. The second protrusion further includes a second abutting surface, which is used to abut against the end face of the front section.

[0009] According to some embodiments of the present invention, the front section includes a second main body and a third protrusion. The rotating member is sleeved on the second main body. The third protrusion protrudes outward relative to the outer peripheral surface of the second main body. The third protrusion has a third abutting surface. The third abutting surface is arranged facing the first abutting surface. The third abutting surface and the rotating member are in axial clearance fit.

[0010] According to some embodiments of the present invention, the diving flashlight includes a first waterproof ring, and the inner peripheral wall of the rotating member is provided with a first groove, the first waterproof ring being embedded in the first groove and abutting against the outer peripheral surface of the front section.

[0011] According to some embodiments of the present invention, the diving flashlight includes a second waterproof ring, a second groove is provided on the outer peripheral surface of the front section, the second waterproof ring is embedded in the second groove and abuts against the inner peripheral wall of the rotating member, and the first waterproof ring and the second waterproof ring are distributed axially at intervals.

[0012] According to some embodiments of the present invention, the front section is provided with a limiting groove along the axial direction, the opening of the limiting groove faces the focusing lens, the moving member includes a third body part and a fourth protrusion part, the third body part is slidably disposed on the front section, the fourth protrusion part protrudes outward relative to the outer peripheral surface of the third body part, the fourth protrusion part is engaged in the limiting groove, and the limiting groove is used to limit the rotation of the moving member around the central axis of the main housing.

[0013] According to some embodiments of the present invention, the bottom wall of the limiting groove is formed with a fifth protrusion, the fifth protrusion protruding axially toward the fourth protrusion, and the fifth protrusion abutting against the fourth protrusion to restrict the moving member from sliding away from the focusing lens.

[0014] According to some embodiments of the present invention, the diving flashlight includes a protective cover and a light-transmitting element. The protective cover has a through hole in the middle and is installed on the rotating component. The light-transmitting element covers the through hole and is located on the side of the focusing lens away from the light source. The protective cover and the light-transmitting element together are used to isolate the focusing lens from the external environment.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a perspective view of a diving flashlight in one embodiment of the present invention;

[0018] Figure 2 This is an exploded view of a diving flashlight according to one embodiment of the present invention;

[0019] Figure 3 This is a perspective view of the pressure ring of a diving flashlight in one embodiment of the present invention;

[0020] Figure 4 The images show a top view and a cross-sectional view of a diving flashlight according to one embodiment of the present invention.

[0021] Figure 5 for Figure 4 Enlarged view of region B in the middle;

[0022] Figure 6 for Figure 4 A magnified view of region C in the middle.

[0023] Reference numerals: Diving flashlight 100, main housing 101, rotating part 102, focusing lens 103, front section 201, rear section 202, moving part 203, third body part 204, fourth protrusion 205, light source 206, pressure ring 207, limiting groove 208, fifth protrusion 209, light-transmitting part 210, protective cover 211, first main body part 301, first protrusion 302, second protrusion 303, first abutting surface 304, second abutting surface 305, receiving cavity 401, first waterproof ring 601, first groove 602, second waterproof ring 603, second groove 604, second main body part 605, third protrusion 606, third abutting surface 607. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Flashlights are widely used due to their advantages such as being lightweight and easy to carry. Currently, many variable-focus flashlights have emerged, which adjust the illumination area and brightness of the emitted light by changing the distance between the light source 206 and the lens. In the field of diving, variable-focus flashlights are also needed to meet the needs of different underwater scenarios. However, the variable-focus flashlights used for diving in related technologies have the problem of poor waterproof performance.

[0030] This utility model proposes a diving flashlight 100, which has a zoom function and can also improve waterproof performance.

[0031] refer to Figure 1 , Figure 2 and Figure 4A diving flashlight 100 according to an embodiment of the present invention includes a main housing 101, a rotating member 102, a moving member 203, a light source 206, and a focusing lens 103. The main housing 101 includes a front section 201 and a rear section 202. The front section 201 has a receiving cavity 401, and the rear section 202 is used for gripping. The rotating member 102 is sleeved on the outer periphery of the front section 201. The moving member 203 is disposed in the receiving cavity 401 and is threadedly connected to the rotating member 102. The moving member 203 can move back and forth axially relative to the main housing 101. The light source 206 is fixed to the moving member 203, and the focusing lens 103 is fixed to the rotating member 102. The rotating member 102 rotates around the central axis of the main housing 101, so that the moving member 203 moves back and forth axially within the receiving cavity 401, thereby changing the distance between the light source 206 and the focusing lens 103. In related technologies, adjustable-focus flashlights typically connect a focusing lens 103 to a movable component that is fitted outside the main housing 101 and can move back and forth relative to the main housing 101. The focusing lens 103 is then moved back and forth by rotating or pushing the movable component, thereby changing its distance from the light source 206 and achieving focusing. However, this structure alters the axial relative position of the flashlight's external structure, and the axial relative movement between the main housing 101 and the movable component results in poor waterproofing performance. The diving flashlight 100 of this embodiment, by setting an axially movable component 203 inside the main housing 101 and mounting the light source 206 on the movable component 203, utilizes a threaded connection between a rotating component 102 and the movable component 203. This allows the movable component 203 to move back and forth inside the main housing 101 while the rotating component 102 only rotates relative to the main housing 101. This transfers the axial movement to the internal space, with the external structure only rotating, allowing for better arrangement of the waterproof structure and effectively improving waterproofing performance.

[0032] It should be noted that the reference Figure 4 In some embodiments of this utility model, the focusing lens 103 can specifically be a plano-convex lens. The side of the plano-convex lens closer to the light source 206 is a flat surface, and the side farther from the light source 206 is a convex surface. The convex surface is responsible for converging the diverging light rays towards the optical axis, while the flat surface keeps the light rays parallel or slightly deflected. This design can quickly concentrate the light rays onto the main optical axis to form a more concentrated beam. Moreover, the process is mature and the cost is low. In some embodiments, the focusing lens 103 can also be a biconvex lens or a compound lens.

[0033] refer to Figures 2 to 5In some embodiments of this utility model, the flashlight further includes a pressure ring 207, which is connected to the front section 201. The pressure ring 207 has a first abutting surface 304, which extends radially outward relative to the front section 201. The first abutting surface 304 is used to abut against the rotating member 102 to restrict the rotating member 102 from moving axially back and forth relative to the main housing 101. The first abutting surface 304 of the pressure ring 207 can abut against the rotating member 102 to prevent the rotating member 102 from sliding axially during rotation, thus providing a certain degree of axial limiting effect on the rotating member 102. This allows the force to be better transmitted to the moving member 203 through the thread, enabling the moving member 203 to move better axially, thereby changing the distance between the light source 206 and the focusing lens 103, achieving a zoom effect. It should be noted that, according to the reference... Figure 5 In some embodiments of this utility model, there is a gap between the first abutting surface 304 and the corresponding position of the rotating member 102, which can prevent the rotating member 102 from rubbing against the first abutting surface 304 when rotating, thus improving the user experience.

[0034] refer to Figure 4 and Figure 5 In some embodiments of this utility model, a pressure ring 207 is sleeved on the outer periphery of the front section 201, and the inner peripheral wall of the pressure ring 207 is threadedly connected to the outer peripheral surface of the front section 201 to restrict the rotating part 102 from moving along the axis and disengaging from the front section 201. The threaded connection allows for a tighter connection between the pressure ring 207 and the front section 201, preventing the rotating part 102 from falling off.

[0035] It should be noted that in some embodiments of this utility model, an annular groove is provided on the outer peripheral surface of the front section 201, and the pressure ring 207 is engaged in the annular groove. This can further improve the structural stability of the pressure ring 207 after installation and prevent the pressure ring 207 from falling off.

[0036] refer to Figure 3 and Figure 5In some embodiments of this utility model, the pressure ring 207 includes a first main body 301, a first protrusion 302, and a second protrusion 303. The first main body 301 is threadedly connected to the outer peripheral surface of the front section 201. The first protrusion 302 extends radially away from the front section 201 relative to the first main body 301. The second protrusion 303 extends radially relative to the central axis of the front section 201 relative to the first main body 301. A first abutting surface 304 is disposed on the first protrusion 302. The second protrusion 303 also includes a second abutting surface 305, which is used to abut against the end face of the front section 201. The first protrusion 302 and the second protrusion 303 are respectively provided on the outer and inner rings of the first main body 301, which can improve the performance of the pressure ring 207. The specific functions are as follows: the first main body 301 has the longest axial dimension, and is fitted on the front section 201 to provide the greatest friction and structural stability. The first protrusion 302 forms the first abutment surface 304, which can effectively abut against the rotating part 102 to prevent it from moving axially. The second protrusion 303 is for the convenience of disassembling the pressure ring 207. When disassembling the pressure ring 207, the user can use tools or manually lift the second protrusion 303 and apply an outward pushing force to the second abutment surface 305, thereby applying an axial force to the entire pressure ring 207, making the pressure ring 207 easier to detach.

[0037] refer to Figure 4 and Figure 6 In some embodiments of this utility model, the front section 201 includes a second main body 605 and a third protrusion 606. The rotating member 102 is sleeved on the second main body 605. The third protrusion 606 protrudes outward relative to the outer peripheral surface of the second main body 605. The third protrusion 606 has a third abutment surface 607, which is disposed facing the first abutment surface 304. The third abutment surface 607 and the rotating member 102 are in axial clearance fit. The third abutment surface 607 can abut against both sides of the rotating member 102 together with the first abutment surface 304, thereby enabling the rotating member 102 to rotate more smoothly and transmit the axial force to the moving member 203, improving the waterproof performance of the external structure. The axial clearance fit between the third abutment surface 607 and the rotating member 102 is to reserve space for the rotation of the rotating member 102 and prevent excessive friction between it and the third protrusion 606 during rotation.

[0038] refer to Figure 4 and Figure 6In some embodiments of this utility model, the diving flashlight 100 includes a first waterproof ring 601. A first groove 602 is formed on the inner peripheral wall of the rotating member 102. The first waterproof ring 601 is embedded in the first groove 602 and abuts against the outer peripheral surface of the front section 201. The first waterproof ring 601 prevents water from entering through the radial gap between the rotating member 102 and the front section 201 when the rotating member 102 rotates relative to the front section 201, thus improving the waterproof effect of the diving flashlight 100. Furthermore, since the rotating member 102 in this embodiment only rotates and has almost no axial movement, the first waterproof ring 601 will not generate excessive friction with the outer peripheral surface of the front section 201. The design of the first groove 602 is to provide space for the installation of the first waterproof ring 601, reducing excessive friction between the first waterproof ring 601 and the front section 201. Both of these factors effectively improve the waterproof performance and the service life of the first waterproof ring 601.

[0039] refer to Figure 4 and Figure 6 In some embodiments of this utility model, the diving flashlight 100 includes a second waterproof ring 603. A second groove 604 is formed on the outer peripheral surface of the front section 201. The second waterproof ring 603 is embedded in the second groove 604 and abuts against the inner peripheral wall of the rotating member 102. The first waterproof ring 601 and the second waterproof ring 603 are spaced apart along the axial direction. The second waterproof ring 603 is also designed to prevent water from entering through the radial gap between the rotating member 102 and the front section 201. It further enhances the waterproof performance based on the first waterproof ring 601. The spaced distribution of the first waterproof ring 601 and the second waterproof ring 603 avoids them abutting against each other and affecting the waterproof performance. It also increases the maze degree of the gap between the front section 201 and the rotating member 102, increasing the difficulty of water entering and thus improving the waterproof performance.

[0040] It should be noted that the reference Figure 4 In some embodiments of this utility model, waterproof rings are provided on both the upper and lower surfaces of the plano-convex lens to prevent water from flowing into the interior of the diving flashlight 100 from the opening of the plano-convex lens.

[0041] It should be noted that the reference Figure 2 and Figure 4 In some embodiments of this utility model, waterproof rings are provided at the connection points of the various components of the front section 201 and the rear section 202 of the diving flashlight 100. Waterproof rings are also provided or waterproof treatment is applied around the cavity for placing the battery and the outer periphery of the switch knob, so that the entire diving flashlight 100 meets the waterproof design and meets the needs of underwater use scenarios.

[0042] It should be noted that in some embodiments of this utility model, the first waterproof ring 601, the second waterproof ring 603, and waterproof rings at other locations can be made of materials such as silicone or fluoropolymer.

[0043] refer to Figure 6 In some embodiments of this utility model, at least two first waterproof rings 601 are spaced apart along the axial direction, and / or at least two second waterproof rings 603 are spaced apart along the axial direction. Providing multiple first waterproof rings 601 or second waterproof rings 603 can further enhance the labyrinthine effect between the gaps, increase the difficulty of water ingress, and improve the sealing performance, effectively enhancing the waterproof performance of the diving flashlight 100.

[0044] refer to Figure 2 and Figure 4 In some embodiments of this utility model, the front section 201 is provided with a limiting groove 208 along the axial direction. The opening of the limiting groove 208 faces the focusing lens 103. The moving member 203 includes a third body part 204 and a fourth protrusion 205. The third body part 204 is slidably disposed on the front section 201. The fourth protrusion 205 protrudes outward relative to the outer peripheral surface of the third body part 204. The fourth protrusion 205 is engaged in the limiting groove 208. The limiting groove 208 is used to limit the rotation of the moving member 203 around the central axis of the main housing 101. The limiting groove 208 can restrict the rotation of the moving part 203, so that the moving part 203 can move better along the axis after being subjected to external force, improving the user experience when zooming. In addition, the limiting groove 208 also helps the moving part 203 to be better engaged in the receiving cavity 401 of the front section 201. The limiting groove 208 extending along the axis also plays a guiding role for the moving part 203, so that it can move more accurately along the axis and prevent the light source 206 from leaving the optical central axis of the focusing lens 103.

[0045] refer to Figure 2 and Figure 4 In some embodiments of this utility model, a fifth protrusion 209 is formed on the bottom wall of the limiting groove 208. The fifth protrusion 209 protrudes axially toward the fourth protrusion 205. The fifth protrusion 209 is used to abut against the fourth protrusion 205 to limit the sliding of the moving member 203 away from the focusing lens 103. The fifth protrusion 209 can effectively limit the movement of the moving member 203 away from the light source 206. On the one hand, it can prevent the movement stroke from being too large and the threads of the moving member 203 and the rotating member 102 from coming loose. On the other hand, it can design the distance for the best light effect according to the position of the plano-convex lens and the light source 206. For example, when the fourth protrusion 205 abuts against the fifth protrusion 209, the light source 206 is located near the focal point of the plano-convex lens. At this time, the beam is more concentrated and the illumination distance is also longer, resulting in an ideal light effect.

[0046] refer to Figure 2 and Figure 4 In some embodiments of this utility model, the diving flashlight 100 includes a protective cover 211 and a light-transmitting element 210. The protective cover 211 has a through hole in the middle and is mounted on the rotating component 102. The light-transmitting element 210 covers the through hole and is located on the side of the focusing lens 103 facing away from the light source 206. The protective cover 211 and the light-transmitting element 210 together isolate the focusing lens 103 from the external environment. The protective cover 211, mounted on the light-transmitting element 102, can protect the focusing lens 103. The through hole of the protective cover 211 and the light-transmitting element 210 ensure normal light transmission. This design allows the diving flashlight 100 to isolate the focusing lens 103 from water when used underwater, preventing refraction phenomena caused by water and improving the underwater focusing effect. Specifically, refer to... Figure 2 In some embodiments of this utility model, the protective cover 211 can be threadedly connected to the rotating part 102 for easy disassembly and replacement. Furthermore, the light-transmitting part 210 is configured as a flat plate to reduce the effect of light refraction on the light itself. The light-transmitting part 210 can be made of materials such as glass or transparent plastic.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A diving flashlight, characterized in that, include: The main housing includes a front section and a rear section, the front section having a receiving cavity and the rear section for gripping; A rotating component, wherein the rotating component is sleeved on the outer periphery of the front section; A movable component is disposed within the receiving cavity and is threadedly connected to the rotating component. The movable component can move axially back and forth relative to the main housing. Light source, which is fixed to the movable component; A focusing lens is fixed to the rotating member, which rotates about the central axis of the main housing to move the moving member back and forth axially within the receiving cavity, thereby changing the distance between the light source and the focusing lens.

2. The diving flashlight according to claim 1, characterized in that, The front section has a limiting groove along the axial direction, and the opening of the limiting groove faces the focusing lens. The moving part includes a third body part and a fourth protrusion part. The third body part is slidably disposed on the front section. The fourth protrusion part protrudes outward relative to the outer peripheral surface of the third body part. The fourth protrusion part is engaged in the limiting groove. The limiting groove is used to limit the rotation of the moving part around the central axis of the main housing.

3. The diving flashlight according to claim 2, characterized in that, The bottom wall of the limiting groove has a fifth protrusion, which protrudes axially toward the fourth protrusion. The fifth protrusion abuts against the fourth protrusion to restrict the moving member from sliding away from the focusing lens.

4. The diving flashlight according to claim 1, characterized in that, The flashlight also includes a pressure ring connected to the front section. The pressure ring has a first abutting surface that extends radially outward relative to the front section. The first abutting surface is used to abut against the rotating member to restrict the rotating member from moving axially back and forth relative to the main housing.

5. The diving flashlight according to claim 4, characterized in that, The pressure ring is sleeved on the outer periphery of the front section, and the inner peripheral wall of the pressure ring is threadedly connected to the outer peripheral surface of the front section to restrict the rotating part from moving along the axis and disengaging from the front section.

6. The diving flashlight according to claim 5, characterized in that, The pressure ring includes a first main body, a first protrusion, and a second protrusion. The first main body is threadedly connected to the outer peripheral surface of the front section. The first protrusion extends radially away from the front section relative to the first main body. The second protrusion extends radially towards the central axis of the front section relative to the first main body. A first abutting surface is disposed on the first protrusion. The second protrusion also includes a second abutting surface, which is used to abut against the end face of the front section.

7. The diving flashlight according to claim 4, characterized in that, The front section includes a second main body and a third protrusion. The rotating member is sleeved on the second main body. The third protrusion protrudes outward relative to the outer peripheral surface of the second main body. The third protrusion has a third abutting surface. The third abutting surface is arranged facing the first abutting surface. The third abutting surface and the rotating member are in axial clearance fit.

8. The diving flashlight according to claim 1, characterized in that, The diving flashlight includes a first waterproof ring, and the inner peripheral wall of the rotating part has a first groove. The first waterproof ring is embedded in the first groove and abuts against the outer peripheral surface of the front section.

9. The diving flashlight according to claim 8, characterized in that, The diving flashlight includes a second waterproof ring, and a second groove is formed on the outer peripheral surface of the front section. The second waterproof ring is embedded in the second groove and abuts against the inner peripheral wall of the rotating member. The first waterproof ring and the second waterproof ring are distributed axially at intervals.

10. The diving flashlight according to claim 1, characterized in that, The diving flashlight includes a protective cover and a light-transmitting element. The protective cover has a through hole in the middle and is mounted on the rotating component. The light-transmitting element covers the through hole and is located on the side of the focusing lens away from the light source. The protective cover and the light-transmitting element together are used to isolate the focusing lens from the external environment.

Images