Flashlight with telescopic structure

Abstract

The invention belongs to the technical field of flashlights, and particularly relates to a flashlight with a telescopic structure, which comprises a shell, a sleeve, a telescopic cylinder, a moving assembly and a driving assembly. The moving assembly is arranged in the second containing cavity, an avoiding groove is formed in the side wall of the sleeve, the moving assembly is connected with the end, away from the lighting assembly, of the telescopic cylinder through the avoiding groove, and the moving assembly can drive the telescopic cylinder to move along the cylinder wall of the sleeve; the driving assembly is arranged in the second containing cavity, the driving assembly is connected with one end of the moving assembly, and the driving assembly can drive the moving assembly to move so as to drive the telescopic cylinder to move along the cylinder wall of the sleeve. When the flashlight is used, the overall length of the flashlight is changed, the telescopic cylinder wraps the outer side of the lighting assembly, light emitted by the lighting assembly can be closer to parallel light by prolonging the length of the telescopic cylinder than light emitted by the lighting assembly when the telescopic cylinder is not prolonged, and the irradiation distance is increased. Meanwhile, the length of the flashlight is changed, the holding position is flexibly adjusted according to different user requirements, and the use comfort is improved.

Description

Technical Field

[0001] This invention belongs to the field of flashlight technology, and more specifically, relates to a flashlight with a retractable structure. Background Technology

[0002] With societal development, the demand for nighttime travel is gradually increasing. To ensure safety during nighttime outings, flashlights are essential for illumination. Common flashlights consist of a body and a lighting component. The body houses the circuit board and power supply, while the lighting component provides illumination, ensuring safety for nighttime travelers. However, traditional flashlights have a fixed, integrated grip and lighting component, which can easily cause hand fatigue during prolonged single-handed use. Furthermore, the grip cannot be flexibly adjusted to accommodate different hand sizes, resulting in poor comfort. This fixed design makes it difficult for users to alleviate hand pressure during extended outdoor adventures, nighttime patrols, or emergency rescues by adjusting the grip, especially for users with smaller hands, where an unstable grip may affect lighting accuracy.

[0003] To address this issue, this embodiment provides a flashlight with a retractable structure. Summary of the Invention

[0004] The main objective of this application is to provide a flashlight with a telescopic structure, which can change the length of the flashlight by telescopic tube.

[0005] To achieve the above objectives, this application proposes a flashlight with a retractable structure, comprising: The outer casing has a first receiving cavity inside; A sleeve is disposed in a first receiving cavity, the sleeve having a second receiving cavity, and a lighting component is fixedly connected to one end of the sleeve; A telescopic cylinder is disposed in the first mounting cavity and wraps around the sleeve, with one end of the telescopic cylinder wrapping around the lighting component; A movable component is disposed in the second receiving cavity. The side wall of the sleeve is provided with a clearance groove. The movable component is connected to the end of the telescopic cylinder away from the lighting component through the clearance groove. The movable component can drive the telescopic cylinder to move along the cylinder wall of the sleeve, thereby changing the distance between the lighting component and the end face of the telescopic cylinder. A drive assembly is disposed in the second receiving cavity. The drive assembly is connected to one end of the moving assembly. The drive assembly can drive the moving assembly to move, thereby driving the telescopic cylinder to move along the cylinder wall of the sleeve.

[0006] Furthermore, the driving assembly includes a driving motor and a driving screw. The driving motor is located at the end of the second receiving cavity away from the lighting assembly. The output shaft of the driving motor is fixedly connected to one end of the driving screw. The end of the driving screw away from the driving motor is rotatably connected to the lighting assembly. The moving assembly is connected in cooperation with the driving screw.

[0007] Furthermore, the end of the drive screw near the drive motor is provided with a screw connection hole. The output end of the drive motor is inserted into the screw connection hole or inserted into the screw connection hole through a screw connector and fixedly connected to the screw connection hole, so that when the drive motor starts, the output end of the drive motor can drive the drive screw to rotate.

[0008] Furthermore, the moving component includes a moving block with a through hole in the middle. The through hole is sleeved on and connected to the drive screw, so that when the drive screw rotates, the moving block can move along the axis of the drive screw. The outer side of the moving block is provided with a protrusion, which passes through the clearance groove and abuts against and connects to the end of the telescopic cylinder away from the lighting component, so that when the moving block moves, the protrusion can drive the telescopic cylinder to move along the cylinder wall of the sleeve.

[0009] Furthermore, the end of the telescopic cylinder furthest from the lighting component is the mounting end, and the port of the mounting end is provided with a telescopic connection hole. The protrusion is provided with a mating connection hole, which is concentrically arranged with the telescopic connection hole. The mating connection hole is fixedly connected to the telescopic connection hole through the protrusion connector, so that when the moving block moves back and forth along the drive screw, the moving block can drive the telescopic cylinder to move back and forth along the cylinder wall of the sleeve.

[0010] Furthermore, the outer wall of the sleeve is provided with a slide rail, the slide rail is planar, and a sliding assembly is fixedly connected to the mounting end. The sliding assembly includes a connecting part and a pulley part. The connecting part is connected to the mounting end, and the pulley part has a pulley. The pulley abuts against the slide rail. When the telescopic cylinder moves along the wall of the sleeve, the pulley and the slide rail roll relative to each other.

[0011] Furthermore, the outer wall of the telescopic cylinder is provided with a plurality of cubic protrusions, which surround the outer wall of the telescopic cylinder and are evenly arrayed along the axial direction of the telescopic cylinder.

[0012] Furthermore, the first receiving cavity is also provided with an adjusting cylinder, which is sleeved outside the telescopic cylinder, and both ends of the adjusting cylinder are connected to both ends of the telescopic cylinder, so that the telescopic cylinder can drive the adjusting cylinder to move when it moves along the cylinder wall of the sleeve. The adjusting cylinder is provided with a lens at one end of the lighting component, and the light emitted by the lighting component needs to pass through the lens to be sent to the outside of the flashlight. The lens is detachably connected to the adjusting cylinder.

[0013] Furthermore, the lens is a convex lens. When the adjusting cylinder moves, it changes the distance between the convex lens and the lighting component, making the flashlight light bright and focused.

[0014] Furthermore, the lens is a concave lens. When the adjusting cylinder moves, it changes the distance between the concave lens and the lighting component, making the flashlight's light diffuse and its illumination range wider.

[0015] The flashlight with a retractable structure proposed in this invention has the following beneficial effects: (1) The flashlight with a telescopic structure described in this invention, through the drive component, the moving component and the telescopic tube, when the drive component is started, the moving component drives the telescopic tube to move along the tube wall of the sleeve, thereby changing the overall length of the flashlight. The telescopic tube wraps around the outside of the lighting component. Extending the length of the telescopic tube can make the light emitted by the lighting component closer to parallel light than when it is not extended, thereby increasing the illumination distance.

[0016] (2) The flashlight with a telescopic structure described in this invention has an adjusting tube set outside the telescopic tube. The adjusting tube can move with the telescopic tube. The adjusting tube is provided with a lens at one end of the lighting component. The light path of the flashlight is adjusted by changing the distance between the lens and the lighting component. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the flashlight with a retractable structure according to the present invention; Figure 2 This is a partial internal cross-sectional view of the flashlight with a retractable structure according to the present invention; Figure 3 This is a schematic diagram of the telescopic cylinder. Figure 4 This is a schematic diagram of the pulley assembly. Figure 5 This is a schematic diagram of the sleeve structure; Figure 6 This is a structural diagram of the moving component.

[0018] In the figure: 1. Outer shell; 101. First receiving cavity; 2. Sleeve; 201. Second receiving cavity; 202. Clearance groove; 203. Slide rail; 3. Lighting assembly; 4. Telescopic cylinder; 401. Mounting end; 402. Telescopic connection hole; 403. Sliding assembly; 4031. Connecting part; 4032. Pulley part; 404. Protrusion; 5. Moving assembly; 501. Moving block; 502. Through hole; 503. Protrusion; 504. Mating connection hole; 6. Drive assembly; 601. Drive motor; 602. Drive screw; 603. Screw connection hole; 7. Adjusting cylinder; 701. Lens. Detailed Implementation

[0019] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0020] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0021] Reference Figure 1-6This invention provides a flashlight with a telescopic structure, including a housing 1, a sleeve 2, a telescopic tube 4, a moving component 5, and a driving component 6. The housing 1 has a first receiving cavity 101 inside; the sleeve 2 is disposed within the first receiving cavity 101, and the sleeve 2 has a second receiving cavity 201 inside, with a lighting component 3 fixedly connected to one end of the sleeve 2; the telescopic tube 4 is disposed within the first mounting cavity and surrounds the sleeve 2, with one end of the telescopic tube 4 surrounding the lighting component 3; the moving component 5 is disposed within the second receiving cavity 201, and the side wall of the sleeve 2 has a clearance groove 202. The moving component 5 is connected to the end of the telescopic tube 4 away from the lighting component 3 through the clearance groove 202, and the moving component 5 can drive the telescopic tube 4 to move along the tube wall of the sleeve 2, thereby changing the distance between the lighting component 3 and the end face of the telescopic tube 4; the driving component 6 is disposed within the second receiving cavity 201, and the driving component 6 is connected to one end of the moving component 5, and the driving component 6 can drive the moving component 5 to move, thereby driving the telescopic tube 4 to move along the tube wall of the sleeve 2. In use, the drive assembly 6 is activated, and the moving assembly 5 drives the telescopic tube 4 to move along the wall of the sleeve 2, thereby changing the overall length of the flashlight. The telescopic tube 4 wraps around the outside of the lighting assembly 3. Extending the length of the telescopic tube 4 makes the light emitted by the lighting assembly 3 closer to parallel light than when it is not extended, increasing the illumination distance. At the same time, changing the length of the flashlight allows for flexible adjustment of the grip position according to different user needs, improving user comfort.

[0022] Further, refer to Figure 2 The drive assembly 6 includes a drive motor 601 and a drive screw 602. The drive motor 601 is located at the end of the second receiving cavity 201 away from the lighting assembly 3. The output shaft of the drive motor 601 is fixedly connected to one end of the drive screw 602, and the end of the drive screw 602 away from the drive motor 601 is rotatably connected to the lighting assembly 3 (in this embodiment, a bearing connection is used). The drive motor 601 is connected to the flashlight's power system. The drive motor 601 is a forward and reverse motor. A button is installed on the outside of the housing 1 to start the drive motor 601 in forward, reverse, and stop directions. When the drive motor 601 is started, it can drive the drive screw 602 to rotate. The moving assembly 5 is connected to the drive screw 602. The rotation of the drive screw 602 drives the moving assembly 5 to move along the wall of the sleeve 2. At this time, the total length of the flashlight is the length of the housing 1 plus the length of the extended moving assembly 5.

[0023] Furthermore, refer to Figure 2The drive screw 602 has a screw connection hole 603 at one end near the drive motor 601. The output end of the drive motor 601 is inserted into the screw connection hole 603 or fixedly connected to it via a screw connector. This design ensures the stability of the connection between the drive motor 601 and the drive screw 602, effectively transmitting the torque generated by the drive motor 601 and ensuring stable and efficient rotation of the drive screw 602. Furthermore, this design facilitates the installation and removal of the drive motor 601 and the drive screw 602, allowing for quick repairs or replacements when the flashlight malfunctions, improving efficiency and reducing costs. This connection method also accommodates different specifications of drive motors 601 and drive screws 602, enhancing the flashlight's versatility and compatibility. The output end of the drive motor 601 can be directly connected to the lead screw connection hole 603 via a flat key, or it can be connected via a lead screw connector such as a coupling. In this embodiment, the output end of the drive motor 601 is connected to the lead screw connection hole 603 via a flat key.

[0024] In this embodiment, reference Figure 2 , Figure 4The moving component 5 includes a moving block 501 with a through hole 502 in its center. The through hole 502 is sleeved on and connected to the drive screw 602, allowing the moving block 501 to move along the axis of the drive screw 602 when the drive screw 602 rotates. A protrusion 503 is provided on the outer side of the moving block 501, passing through the clearance groove 202 and abutting against and connecting with the end of the telescopic cylinder 4 away from the lighting component 3. This allows the moving block 501 to move, driving the telescopic cylinder 4 along the wall of the sleeve 2 via the protrusion 503. To ensure balance, in this embodiment, the protrusions 503 are arranged symmetrically on both sides of the moving block 501, with one protrusion 503 on each side. This ensures that the telescopic cylinder 4 is subjected to uniform force during the movement of the moving block 501, preventing jamming or uneven extension due to force deviation. In use, the drive motor 601 drives the drive screw 602 to rotate. The moving block 501 of the drive screw 602 moves along the axis of the drive screw 602 according to the direction of rotation. The protrusion 503 on the moving block 501 drives the telescopic cylinder 4 to move. This embodiment makes the flashlight length adjustment flexible and convenient. When it is necessary to extend the flashlight to obtain a better lighting range, simply start the drive motor 601, causing the drive screw 602 to rotate in a specific direction. The moving block 501 will then move along the drive screw 602 to the end away from the drive motor 601, thereby pushing the telescopic cylinder 4 outward through the protrusion 503, increasing the total length of the flashlight. Conversely, when it is necessary to shorten the flashlight for easier carrying or storage, simply rotate the drive motor 601 in the opposite direction. The moving block 501 will then move along the drive screw 602 to the end closer to the drive motor 601, causing the telescopic cylinder 4 to retract inward, reducing the total length of the flashlight. The entire adjustment process is smooth and efficient, greatly improving the ease of use and practicality of the flashlight.

[0025] Further, refer to Figure 2 , Figure 3The end of the telescopic cylinder 4 furthest from the lighting component 3 is the mounting end 401. The mounting end 401 has a telescopic connection hole 402, and the protrusion 503 has a mating connection hole 504. The mating connection hole 504 is concentric with the telescopic connection hole 402. The mating connection hole 504 is fixedly connected to the telescopic connection hole 402 via the protrusion 503 connector, allowing the moving block 501 to move back and forth along the drive screw 602, thus driving the telescopic cylinder 4 to move back and forth along the cylinder wall of the sleeve 2. The protrusion 503 connector can be a screw, and the telescopic connection hole 402 is a threaded hole. The screw passes through the telescopic connection hole 402 and is threaded into the mating connection hole 504. This connection method is not only simple in structure but also stable, ensuring reliable transmission between the moving block 501 and the telescopic cylinder 4. In actual use, when the drive motor 601 drives the drive screw 602 to rotate, the moving block 501 moves axially on the drive screw 602. Since the protrusion 503 and the telescopic cylinder 4 are fixedly connected through the protrusion 503 connector, the movement of the moving block 501 will synchronously drive the telescopic cylinder 4 to move back and forth along the cylinder wall of the sleeve 2. This design makes the flashlight length adjustment more precise and reliable. Whether extending or shortening the flashlight, it can ensure the coordinated movement between the telescopic cylinder 4 and the moving block 501, thereby effectively improving the stability and accuracy of the flashlight length adjustment and further enhancing the flashlight's performance.

[0026] Furthermore, refer to Figure 5The outer wall of the sleeve 2 is provided with a slide rail 203, which is flat. A sliding assembly 403 is fixedly connected to the mounting end 401. The sliding assembly 403 includes a connecting part 4031 and a pulley part 4032. The connecting part 4031 is connected to the mounting end 401, and the pulley part 4032 has a pulley that abuts against the slide rail 203. When the telescopic cylinder 4 moves along the wall of the sleeve 2, the pulley and the slide rail 203 roll relative to each other. The telescopic cylinder 4 is connected to the sleeve 2 via the sliding assembly 403, providing support. To ensure balance, the sliding assembly 403 can be symmetrically arranged on both sides of the mounting end 401. The symmetrical arrangement of the sliding assemblies 403 on both sides can evenly distribute the force generated when the telescopic cylinder 4 moves, avoiding jamming or displacement of the telescopic cylinder 4 due to uneven force. At the same time, this symmetrical layout can also enhance the stability of the entire flashlight structure, making the flashlight more stable and smooth during length adjustment, effectively improving the user's operating experience when using the flashlight. When the drive motor 601 starts, the moving block 501 drives the telescopic cylinder 4 to move via the protrusion 503. The telescopic cylinder 4 moves on the slide rail 203 via the sliding component 403. During this process, the power provided by the drive motor 601 is precisely transmitted to the moving block 501 through the transmission structure. The protrusion 503 on the moving block 501 and the telescopic cylinder 4 cooperate closely to form a stable force transmission path. When the telescopic cylinder 4 moves on the slide rail 203, the pulley part 4032 of the sliding component 403 rolls smoothly along the slide rail 203. The rolling friction between the pulley and the slide rail 203 is small, effectively reducing energy loss and making the movement of the telescopic cylinder 4 more efficient. Moreover, the planar design of the slide rail 203 provides a stable track for the pulley to roll, further ensuring the straightness and accuracy of the movement of the telescopic cylinder 4, avoiding the telescopic cylinder 4 from shaking or deviating from the predetermined trajectory during movement, thereby ensuring the reliable realization of the flashlight length adjustment function.

[0027] In this embodiment, reference Figure 2 , Figure 3 The telescopic cylinder 4 has multiple cuboid protrusions 404 on its outer wall, which are evenly arranged around the outer wall and along the axis of the telescopic cylinder 4. This design enhances the structural strength of the telescopic cylinder 4, making it less prone to deformation under external forces. Simultaneously, these cuboid protrusions 404 also act as guides during length adjustment, assisting the telescopic cylinder 4 to move in the correct direction, further improving the accuracy and smoothness of length adjustment. Moreover, when the flashlight is accidentally impacted, the cuboid protrusions 404 can disperse the impact force to a certain extent, protecting the internal structure of the telescopic cylinder 4 from damage and extending the flashlight's lifespan.

[0028] In this embodiment, reference Figure 2The first receiving cavity 101 also includes an adjusting cylinder 7, which is sleeved outside the telescopic cylinder 4, with both ends of the adjusting cylinder 7 connected to both ends of the telescopic cylinder 4 (abutting each other in this embodiment). This allows the telescopic cylinder 4 to move along the wall of the sleeve 2, thereby moving the adjusting cylinder 7. A lens 701 is located at one end of the adjusting cylinder 7 near the lighting component 3. The light emitted by the lighting component 3 must pass through the lens 701 to reach the outside of the flashlight. The lens 701 and the adjusting cylinder 7 are detachably connected, either by a snap-fit ​​connection or a threaded connection. When using a snap-fit ​​connection, the lens 701 has a snap-fit ​​on its edge, and the adjusting cylinder 7 has a corresponding slot. The snap-fit ​​and slot work together to achieve quick installation and removal, facilitating cleaning of the lens 701 or replacement with lenses of different specifications to meet different lighting needs. When using a threaded connection, the lens 701 has an external thread on its outer circumference, and the corresponding part of the adjusting cylinder 7 has an internal thread. Rotating the lens 701 securely mounts it onto the adjusting cylinder 7. This connection method provides good sealing, effectively preventing dust and moisture from entering the flashlight and ensuring the normal operation of the lighting component 3. The lens 701 can be either a concave lens 701 or a convex lens 701. When the lens 701 is a convex lens 701, moving the adjusting cylinder 7 changes the distance between the convex lens 701 and the lighting component 3. When the distance is closer, the light refracted by the convex lens 701 forms a more concentrated beam, suitable for scenarios requiring long-distance illumination, such as nighttime outdoor exploration and search and rescue. When the adjusting cylinder 7 moves the convex lens 701 away from the lighting component 3, the light refraction angle changes, and the illumination range expands accordingly. Although the brightness decreases slightly, it still meets the lighting needs of a larger area, making it ideal for situations like reading inside a tent or illuminating the surrounding environment during nighttime camping. By flexibly moving the adjustment cylinder 7, users can easily adjust the flashlight's lighting effect according to their actual needs. When the lens 701 is a concave lens 701, the movement of the adjustment cylinder 7 changes the distance between the concave lens 701 and the lighting component 3. When the concave lens 701 is closer to the lighting component 3, the light will form a more divergent beam after being refracted by the concave lens 701. This beam is suitable for use in scenarios where a large area of ​​illumination is needed but not particularly high brightness, such as general activity lighting indoors or as ambient lighting. When the adjustment cylinder 7 moves the concave lens 701 away from the lighting component 3, the light divergence will further increase, and the illumination range will become wider, but the brightness will also become lower. This is suitable for scenarios where the brightness requirement is not high but a large area needs to be covered, such as auxiliary lighting in some small outdoor gathering places.

[0029] In the description of this invention, it should be understood that the terms "middle," "length," "upper," "lower," "front," "rear," "vertical," "horizontal," "inner," "outer," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0030] In this invention, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first and second features, or indirect contact with the first and second features through an intermediate medium. "A plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] The above description is merely illustrative of the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made without creative effort within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flashlight with a retractable structure, characterized in that, include: The outer shell (1) has a first receiving cavity (101) inside. A sleeve (2) is disposed in a first receiving cavity (101), and the sleeve (2) has a second receiving cavity (201). A lighting component (3) is fixedly connected to one end of the sleeve (2). Telescopic cylinder (4) is located in the first mounting cavity and wraps around the sleeve (2). One end of the telescopic cylinder (4) wraps around the lighting component (3). The movable component (5) is located in the second receiving cavity (201). The side wall of the sleeve (2) is provided with a relief groove (202). The movable component (5) is connected to the end of the telescopic cylinder (4) away from the lighting component (3) through the relief groove (202). The movable component (5) can drive the telescopic cylinder (4) to move along the cylinder wall of the sleeve (2), thereby changing the distance between the lighting component (3) and the end face of the telescopic cylinder (4). The drive assembly (6) is located in the second receiving cavity (201). The drive assembly (6) is connected to one end of the moving assembly (5). The drive assembly (6) can drive the moving assembly (5) to move, thereby driving the telescopic cylinder (4) to move along the cylinder wall of the sleeve (2).

2. The flashlight with a retractable structure according to claim 1, characterized in that, The drive assembly (6) includes a drive motor (601) and a drive screw (602). The drive motor (601) is located at the end of the second receiving cavity (201) away from the lighting assembly (3). The output shaft of the drive motor (601) is fixedly connected to one end of the drive screw (602). The end of the drive screw (602) away from the drive motor (601) is rotatably connected to the lighting assembly (3). The moving assembly (5) is connected to the drive screw (602).

3. The flashlight with a retractable structure according to claim 2, characterized in that, The drive screw (602) has a screw connection hole (603) at one end near the drive motor (601). The output end of the drive motor (601) is inserted into the screw connection hole (603) or inserted into the screw connection hole (603) through a screw connector and fixedly connected to the screw connection hole (603), so that when the drive motor (601) is started, the output end of the drive motor (601) can drive the drive screw (602) to rotate.

4. The flashlight with a retractable structure according to claim 2, characterized in that, The moving component (5) includes a moving block (501), the moving block (501) has a through hole (502) in the middle, the through hole (502) is sleeved on the drive screw (602) and is connected to the drive screw (602) so that when the drive screw (602) rotates, the moving block (501) can move along the axis of the drive screw (602). The outer side of the moving block (501) is provided with a protrusion (503), the protrusion (503) passes through the clearance groove (202) and abuts and connects with the end of the telescopic cylinder (4) away from the lighting component (3), so that when the moving block (501) moves, the telescopic cylinder (4) can be driven to move along the cylinder wall of the sleeve (2) through the protrusion (503).

5. The flashlight with a retractable structure according to claim 4, characterized in that, The end of the telescopic cylinder (4) away from the lighting component (3) is the mounting end (401). The port of the mounting end (401) is provided with a telescopic connection hole (402). The protrusion (503) is provided with a mating connection hole (504). The mating connection hole (504) and the telescopic connection hole (402) are concentrically arranged. The mating connection hole (504) is fixedly connected to the telescopic connection hole (402) through the protrusion (503) connector, so that when the moving block (501) moves back and forth along the drive screw (602), the moving block (501) can drive the telescopic cylinder (4) to move back and forth along the cylinder wall of the sleeve (2).

6. The flashlight with a retractable structure according to claim 5, characterized in that, The outer wall of the sleeve (2) is provided with a slide (203), the slide (203) is a plane, and the mounting end (401) is fixedly connected to a sliding component (403). The sliding component (403) includes a connecting part (4031) and a pulley part (4032). The connecting part (4031) is connected to the mounting end (401), and the pulley part (4032) has a pulley. The pulley abuts against the slide (203). When the telescopic cylinder (4) moves along the wall of the sleeve (2), the pulley and the slide (203) roll relative to each other.

7. The flashlight with a retractable structure according to claim 1, characterized in that, The outer wall of the telescopic cylinder (4) is provided with a plurality of cubic protrusions (404), which surround the outer wall of the telescopic cylinder (4) and are evenly arrayed along the axial direction of the telescopic cylinder (4).

8. The flashlight with a retractable structure according to any one of claims 1-7, characterized in that, The first receiving cavity (101) is also provided with an adjusting cylinder (7), which is sleeved outside the telescopic cylinder (4), and both ends of the adjusting cylinder (7) are connected to both ends of the telescopic cylinder (4), so that when the telescopic cylinder (4) moves along the cylinder wall of the sleeve (2), it can drive the adjusting cylinder (7) to move. The adjusting cylinder (7) is provided with a lens (701) at one end of the lighting component (3). The light emitted by the lighting component (3) needs to pass through the lens (701) to be sent to the outside of the flashlight. The lens (701) is detachably connected to the adjusting cylinder (7).

9. The flashlight with a retractable structure according to claim 8, characterized in that, The lens (701) is a convex lens (701). When the adjusting cylinder (7) moves, the distance between the convex lens (701) and the lighting component (3) is changed, so that the flashlight light is bright and focused.

10. The flashlight with a retractable structure according to claim 8, characterized in that, The lens (701) is a concave lens (701). When the adjusting cylinder (7) moves, the distance between the concave lens (701) and the lighting component (3) is changed, so that the flashlight light diffuses and the illumination range is wider.

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