flashlight

Abstract

This invention discloses a flashlight, relating to the field of lighting equipment technology. The flashlight includes a lamp tube, a circuit board, and a button assembly. A button hole is formed in the peripheral wall of the lamp tube. The circuit board is disposed inside the lamp tube and opposite the button hole. The button assembly includes a button and a retaining ring. The button passes through the button hole, and a sealing edge is provided around its periphery. The sealing edge abuts against the inner wall of the lamp tube along the periphery of the button hole. The retaining ring is detachably connected to the inner wall of the lamp tube and is pressed tightly against the sealing edge. The technical solution provided by this invention aims to ensure the flashlight's waterproof performance and reduce the risk of circuit board damage from contamination.

Description

Technical Field

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

[0002] In related technologies, flashlights typically use glue injection to fix the button to the lamp housing to achieve a certain degree of waterproofing. However, during the glue injection process, the glue can easily seep into the lamp housing due to its fluidity or operational errors, contaminating or even covering electronic components or solder joints on the circuit board, leading to short circuits, insulation failure, or signal interference. In severe cases, this can cause flashlight malfunctions. Furthermore, once the glue has cured, it is difficult to repair. If the button is damaged or needs replacement, destructive disassembly is required, reducing the product's maintainability and lifespan. Summary of the Invention

[0003] The main objective of this invention is to provide a flashlight that ensures its waterproof performance and reduces the risk of circuit board damage from contamination.

[0004] To achieve the above objectives, the flashlight proposed in this invention includes: A lamp holder, wherein a button hole is provided on the peripheral wall of the lamp holder; A circuit board, wherein the circuit board is disposed inside the lamp housing and is opposite to the button hole; and A button assembly includes a button and a fastening ring. The button passes through the button hole and has a sealing edge around its periphery. The sealing edge abuts against the inner wall of the lamp tube along the periphery of the button hole. The fastening ring is detachably connected to the inner wall of the lamp tube and abuts against the sealing edge.

[0005] In one embodiment, the button is made of rubber and includes a soft rubber button and a hard rubber button. The soft rubber button covers the outer periphery of the hard rubber button, and the sealing edge is provided on the soft rubber button.

[0006] In one embodiment, the hard rubber button includes a pressing portion and a contact portion connected together, the soft rubber button covers the outer periphery of the contact portion, the pressing portion is exposed outside the button hole, and the contact portion extends toward the circuit board and is capable of abutting against the circuit board.

[0007] In one embodiment, the fastening ring is fixed to the inner wall of the lamp tube by means of bolts.

[0008] In one embodiment, the peripheral wall of the lamp tube is further provided with a card interface, the card interface and the button hole are arranged radially opposite each other, and the flashlight also includes a charging component, the charging component is snapped into the card interface and electrically connected to the circuit board.

[0009] In one embodiment, the shape of the card interface is adapted to the outer periphery of the fastening ring, and the circuit board is mounted axially inside the lamp tube.

[0010] In one embodiment, the charging component is configured as a magnetic charging structure, including a magnetic fixing plate and a charging terminal. The magnetic fixing plate is exposed on the outer peripheral wall of the lamp tube, and the charging terminal is electrically connected to the circuit board.

[0011] In one embodiment, the outer peripheral wall of the lamp tube is recessed with a mounting groove, the card interface is disposed on the bottom wall of the mounting groove, the charging component is provided with a buckle, the charging component is installed in the mounting groove, and a first sealing ring is clamped between the charging component and the side wall of the mounting groove, and the buckle is engaged with the periphery of the card interface.

[0012] In one embodiment, the lamp tube includes a connecting tube and a tube body, the button hole is disposed in the connecting tube, the button assembly and the circuit board are mounted in the connecting tube, the ends of the tube body and the connecting tube are sleeved together and a second sealing ring is clamped therebetween.

[0013] In one embodiment, the lamp tube includes a telescopic sleeve and a connecting sleeve. The button hole is disposed in the connecting sleeve. The button assembly and the circuit board are mounted in the connecting sleeve. An LED bead electrically connected to the circuit board is disposed at the end of the connecting sleeve. A lens is disposed at the end of the telescopic sleeve. The lens and the LED bead are axially opposite each other. The telescopic sleeve is sleeved outside the connecting sleeve and can slide axially relative to the connecting sleeve. At the end away from the lens, a third sealing ring is sandwiched between the telescopic sleeve and the connecting sleeve.

[0014] In one embodiment, the lamp tube further includes a wave-shaped female tube and a lamp holder. The lamp holder is connected to the end of the connecting tube and is provided with the lamp bead. The telescopic sleeve is rotatably fitted around the outer periphery of the lamp holder. A first wave-shaped groove is provided on the periphery of the end of the lamp holder facing the lens. The wave-shaped female tube is fixed to the inner periphery of the telescopic sleeve at least in the circumferential direction. A second wave-shaped groove is provided at the end of the wave-shaped female tube. The first wave-shaped groove and the second wave-shaped groove slide against each other in the circumferential direction.

[0015] The technical solution of this invention involves inserting a button through a buttonhole, and sealing the buttonhole with an outwardly extending edge integrally formed or fixedly connected to the buttonhole. When the button is assembled, the edge tightly abuts against the inner wall of the lamp tube along the periphery of the buttonhole, forming a sealed interface. Simultaneously, a fastening ring is fixedly connected to the inner wall of the lamp tube by means of snaps, threads, or welding, and applies pressure to the edge from the inside, firmly clamping the edge between the edge of the buttonhole and the fastening ring, thus forming a stable and reliable sealing structure. This avoids the risk of glue flowing into the lamp tube and contaminating the circuit board, which is common with button installation via glue injection. Furthermore, the cooperation between the edge and the fastening ring achieves a high level of waterproof protection, ensuring the flashlight's waterproof performance and reducing the risk of circuit board damage from contamination. In addition, the button can be replaced by removing and installing the fastening ring, improving the flashlight's maintainability and lifespan. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the flashlight provided by the present invention; Figure 2 for Figure 1 A cross-sectional view of a medium-sized flashlight; Figure 3 for Figure 2 A magnified view of a section at point B in the middle; Figure 4 for Figure 1 Schematic diagram of the middle connecting cylinder; Figure 5 for Figure 1 A diagram illustrating the explosion of a flashlight; Figure 6 for Figure 1 Schematic diagram of the energy storage device; Figure 7 for Figure 1 Schematic diagram of the structure of the central lamp holder; Figure 8 for Figure 1 Another structural diagram of the connecting cylinder; Figure 9 for Figure 2 A magnified view of a portion of point A in the middle.

[0018] Explanation of icon numbers: 100. Lamp tube; 110. Connecting tube; 111. Positioning groove; 112. Reinforcing part; 113. Connecting part; 114. Button hole; 115. Snap-fit ​​interface; 116. Mounting groove; 120. Tube body; 130. Lamp holder; 131. Fixing groove; 132. Snap-fit ​​groove; 133. First wave groove; 134. Fastening hole; 135. Wire hole; 140. Lamp bead; 150. Buffer; 160. Wave female tube; 161. Second wave groove; 170. Telescopic sleeve; 180. Lens; 101. Second sealing ring; 102. Third sealing ring; 200. Energy storage component; 210. Battery casing; 211. Limiting groove; 212. Reinforcing block; 213. Clearance opening; 220. Battery; 300, Circuit board; 700, Button assembly; 710, Button; 711, Hard rubber button; 712, Pressing part; 713, Contact part; 714, Soft rubber button; 715, Edge sealing; 720, Fastening ring; 800, Charging component; 810, Buckle; 820, Magnetic fixing plate; 830, Charging terminal; 840, First sealing ring.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] This invention proposes a flashlight.

[0024] Please refer to Figures 1 to 4 In one embodiment of the present invention, the flashlight includes: The lamp holder 100 has a button hole 114 on its peripheral wall; Circuit board 300 is disposed inside lamp holder 100 and is opposite to button hole 114; and The button assembly 700 includes a button 710 and a fastening ring 720. The button 710 passes through the button hole 114 and has a sealing edge 715 around its periphery. The sealing edge 715 abuts against the inner wall of the lamp tube 100 along the periphery of the button hole 114. The fastening ring 720 is detachably connected to the inner wall of the lamp tube 100 and abuts against the sealing edge 715.

[0025] The technical solution of this invention involves inserting a button 710 through a button hole 114, and sealing the button hole 114 with an outwardly extending sealing edge 715 integrally formed or fixedly connected to its periphery. When the button 710 is in place, the sealing edge 715 tightly abuts against the inner wall of the lamp tube 100 along the periphery of the button hole 114, forming a sealed interface. Simultaneously, a fastening ring 720 is fixedly connected to the inner wall of the lamp tube 100 by means of a snap-fit ​​810, threads, or welding, and applies a clamping force to the sealing edge 715 from the inside, firmly clamping the sealing edge 715 between the edge of the button hole 114 and the fastening ring 720, thus forming a stable and reliable sealing structure. This avoids the risk of glue flowing into the lamp tube 100 and contaminating the circuit board 300, which would occur when installing the button 710 using glue injection. Furthermore, the cooperation between the sealing edge 715 and the fastening ring 720 achieves a high level of waterproof protection, thereby ensuring the flashlight's waterproof performance and reducing the risk of contamination damage to the circuit board 300. In addition, the button 710 can be replaced by removing and installing the fastening ring 720, which improves the maintainability and lifespan of the flashlight.

[0026] It should be noted that the circuit board 300 is equipped with a control switch corresponding to the button 710. The button 710 is movable and deformable. After the user applies force to the button 710, the button 710 can abut against the control switch on the circuit board 300 to control the flashlight. Here, the button 710 can be a gear button 710, a switch button 710, etc. In addition, the axial, radial, circumferential, and other directional descriptions mentioned in this embodiment are all with reference to the lamp holder 100. For example, the axial direction mentioned in this embodiment refers to the axial direction of the lamp holder 100, and will not be repeated here.

[0027] In one embodiment, please refer to Figures 2 to 4 The button 710 is made of rubber and includes a soft rubber button 714 and a hard rubber button 711. The soft rubber button 714 covers the outer periphery of the hard rubber button 711, and the sealing edge 715 is located around the periphery of the soft rubber button 714. In essence, the hard rubber button 711 provides sufficient structural strength and support rigidity to ensure stable force transmission and prevent button deformation during pressing, thereby reliably triggering the switching elements on the internal circuit board 300. The outer soft rubber button 714, due to its elastic properties, provides effective reset and rebound, giving the user a pressing feel, and allows the sealing edge 715 to fit tightly against the inner wall of the lamp holder 100, forming a continuous and seamless sealing interface under the pressure of the fastening ring 720, improving waterproof reliability. Furthermore, since the sealing edge 715 is made of soft rubber, it has good compression resilience and deformation adaptability. Even if there are minor dimensional deviations or assembly tolerances in the button hole 114 of the lamp holder 100, it can fill the gaps through its own elasticity, avoiding sealing failure caused by hard contact. Among them, the soft rubber button 714 and the hard rubber button 711 are integrally molded into button 710 by melting.

[0028] Furthermore, in this embodiment, please refer to Figures 2 to 4 The hard plastic button 711 includes a pressing part 712 and a contact part 713 connected together. A soft plastic button 714 covers the outer periphery of the contact part 713. The pressing part 712 is exposed outside the button hole 114, and the contact part 713 extends toward the circuit board 300 and can abut against the circuit board 300. It can be understood that the hard plastic button 711 includes an integrally formed pressing part 712 and a contact part 713. The pressing part 712 is located on the outside and exposed outside the button hole 114 on the peripheral wall of the lamp tube 100 for direct operation by the user. The contact part 713 extends from the inner end of the pressing part 712 toward the interior of the lamp tube 100 and is positioned toward the circuit board 300. Its end can accurately abut against the control switch on the circuit board 300 to realize the switching function. The soft rubber button 714 covers the outer periphery of the contact portion 713 but does not cover the pressing portion 712, allowing the pressing portion 712 to maintain a hard surface to provide clear operational feedback and wear resistance, while the soft rubber portion mainly serves a sealing and cushioning function. Simultaneously, the soft rubber covering area is limited to the outer periphery of the contact portion 713, preventing external moisture from entering the internal cavity along the gap between the button 710 and the lamp holder 100, and also preventing the soft rubber from covering the pressing portion 712 and affecting the appearance and tactile feel. Generally, the soft rubber button 714 is located in the button hole 114 and can have a gap with the hole wall, while the pressing portion 712 of the hard rubber button 711 protrudes and is exposed outside the button hole 114 for user operation.

[0029] In one embodiment, please refer to Figures 2 to 4 The fastening ring 720 is fixed to the inner wall of the lamp holder 100 by bolt fastening. Specifically, a mounting boss or threaded hole is provided on the inner wall of the lamp holder 100 at a position corresponding to the periphery of the button hole 114. The fastening ring 720 has a matching through hole. The bolt passes through the fastening ring 720 and is screwed into the threaded structure of the inner wall of the lamp holder 100, firmly pressing the fastening ring 720 against the back side of the sealing edge 715 of the soft rubber button 714. This provides a stable, adjustable, and durable clamping force, ensuring that the sealing edge 715 always fits tightly against the edge of the button hole 114, forming a reliable waterproof sealing interface. In addition, the bolt fastening method has good adaptability to manufacturing tolerances, and the dimensional fluctuations of the parts can be compensated by adjusting the tightening force, further ensuring sealing consistency and structural reliability. Of course, in other embodiments, the fastening ring 720 can also be connected to the inner wall of the lamp holder 100 by snap-fit.

[0030] In one embodiment, please refer to Figures 2 to 4The flashlight 100 also has a snap-fit ​​interface 115 on its peripheral wall. The snap-fit ​​interface 115 is radially opposite to the button hole 114. The flashlight also includes a charging component 800, which is snapped into the snap-fit ​​interface 115 and electrically connected to the circuit board 300. In other words, in addition to the button hole 114, the peripheral wall of the flashlight 100 also has a snap-fit ​​interface 115 radially opposite to it. The snap-fit ​​interface 115 is used to detachably mount the charging component 800. The charging component 800 is securely embedded in the snap-fit ​​interface 115 through a snap-fit ​​structure, and has an electrical connection terminal at its internal end. This terminal reliably connects to a corresponding contact or pad on the circuit board 300, thereby providing a charging path for the battery 220 or power management module inside the flashlight. In this way, the charging function is modularized and integrated into the side wall of the lamp holder 100, eliminating the need for a separate dedicated charging port or an exposed USB interface. This maintains the simplicity and sealing continuity of the overall structure of the lamp holder 100, while avoiding interface wear or sealing failure caused by frequent plugging and unplugging of the charging cable. Furthermore, the charging component 800 is fixed using a snap-fit ​​method rather than glue injection or welding, avoiding the risk of glue seepage and facilitating the replacement or upgrading of charging modules of different specifications, thus improving maintenance convenience.

[0031] Furthermore, in this embodiment, please refer to Figures 2 to 4 The card interface 115 is shaped to fit the outer periphery of the fastening ring 720, and the circuit board 300 is mounted axially inside the lamp tube 100. This can be understood as the charging component being mounted inside the lamp tube 100 via the card interface 115, and the shape of the card interface 115 providing operational space for the fixed connection between the fastening ring 720 and the inner wall of the lamp tube 100. This ensures that the fastening ring 720 can be bolted to the inner wall of the lamp tube 100, thereby facilitating the operation of the sealing edge 715 of the button 710. Then, the circuit board 300 is mounted axially inside the lamp tube 100, with one side corresponding to the button hole 114 to receive the press trigger of the contact portion 713 of the hard plastic button 711, and the other side opposite the card interface 115, establishing an electrical connection with the charging component 800 mounted in the card interface 115. Then, the charging component 800 is installed at the card interface 115, thereby making full use of the limited radial space inside the lamp tube 100, so that the fastening ring 720, button 710, circuit board 300 and charging component 800 do not interfere with each other and are positioned in a mutually independent manner, thereby improving the ease of operation in assembling the flashlight.

[0032] Specifically, in this embodiment, please refer to Figure 2 , Figure 3 and Figure 5The charging component 800 is configured with a magnetic charging structure, including a magnetic fixing plate 820 and a charging terminal 830. The magnetic fixing plate 820 is exposed on the outer peripheral wall of the lamp tube 100, and the charging terminal 830 is electrically connected to the circuit board 300. It can be understood that the magnetic fixing plate 820 is embedded in and exposed on the outer peripheral wall of the lamp tube 100, automatically aligning and adhering to the charging device via magnetic force, achieving a convenient, blind-operation charging connection. One end of the charging terminal 830 is electrically connected to the charging device, and the other end is electrically connected to the circuit board 300 mounted along the axial direction of the lamp tube 100, thereby conducting the charging energy input from the external charging device to the internal battery. Thus, on the one hand, the charging component 800 in this embodiment, combined with the closed snap-fit ​​design of the card interface 115, prevents dust and moisture from entering the interior of the lamp tube 100 through the charging interface, improving the flashlight's waterproof and dustproof performance; on the other hand, the magnetic adhesion of the charging component 800 through the magnetic fixing plate 820 during the charging process improves the convenience of the charging operation. Of course, in other embodiments, the charging element 800 may also be a wireless charging structure.

[0033] In one embodiment, please refer to Figures 2 to 4 The lamp holder 100 has a recessed mounting groove 116 on its outer peripheral wall. A snap-fit ​​interface 115 is located on the bottom wall of the mounting groove 116. The charging component 800 is equipped with a snap-fit ​​810. The charging component 800 is installed in the mounting groove 116, and a first sealing ring 840 is clamped between it and the side wall of the mounting groove 116. The snap-fit ​​810 is snapped onto the periphery of the snap-fit ​​interface 115. The charging component 800 is reliably positioned and fixed in the axial and radial directions by being snapped onto the periphery of the snap-fit ​​interface 115 through the snap-fit ​​810. At the same time, the outer contour of the charging component 800 is adapted to the inner cavity of the mounting groove 116, and the first sealing ring 840 is clamped between the two at the circumferential gap. The first sealing ring 840 is compressed between the charging component 800 and the side wall of the mounting groove 116, forming a circumferential sealing structure. In this way, the engagement of the clip 810 and the card interface 115 not only ensures the stability of the charging component 800 installation, preventing it from loosening due to vibration or drops, but also effectively prevents external moisture and dust from entering the internal cavity through the gap between the charging component 800 and the lamp housing 100, thus improving the flashlight's waterproof and dustproof performance. Furthermore, the mounting slot 116 allows the charging component 800 to be completely embedded below the outer surface of the lamp housing 100, maintaining a flat appearance without protruding parts, thus balancing structural compactness, operational safety, and industrial aesthetics.

[0034] In one embodiment, please refer to Figures 3 to 5The lamp tube 100 includes a connecting tube 110 and a tube body 120. A button hole 114 is disposed in the connecting tube 110, and a button assembly 700 and a circuit board 300 are mounted in the connecting tube 110. The ends of the tube body 120 and the connecting tube 110 are sleeved together, and a second sealing ring 101 is sandwiched between them. In this way, the functional modules of the flashlight are integrated into the connecting tube 110, which facilitates independent assembly and debugging, while the tube body 120 mainly serves to house the battery 220. When the tube body 120 and the connecting tube 110 are sleeved together, the second sealing ring 101 is compressed axially and radially between the two, forming a reliable sealing barrier around their connection interface, preventing external moisture from seeping into the internal cavity along the segmented joints of the tube body. This not only avoids the sealing difficulties caused by the multi-hole slotted design of the one-piece lamp tube 100, but also simplifies the manufacturing and assembly process. In addition, the split design of the lamp tube 100 also facilitates the molding of the flashlight and reduces costs.

[0035] In one embodiment, please refer to Figures 3 to 5 , Figure 9 The lamp tube 100 includes a telescopic sleeve 170 and a connecting tube 110. A button hole 114 is provided in the connecting tube 110. A button assembly 700 and a circuit board 300 are mounted in the connecting tube 110. A lamp bead 140 electrically connected to the circuit board 300 is provided at the end of the connecting tube 110. A lens 180 is provided at the end of the telescopic sleeve 170. The lens 180 and the lamp bead 140 are axially opposite each other. The telescopic sleeve 170 is sleeved on the outside of the connecting tube 110 and can slide axially relative to the connecting tube 110. At the end away from the lens 180, a third sealing ring 102 is sandwiched between the telescopic sleeve 170 and the connecting tube 110. This can be understood as follows: one end of the connecting cylinder 110 is equipped with an LED bead 140 electrically connected to the circuit board 300, serving as the light source output end. When the telescopic sleeve 170 slides relative to the lamp tube 100 along the axial direction, the lens 180 at the end away from the connecting cylinder 110 is axially aligned with the LED bead 140. By adjusting the extension or retraction position of the telescopic sleeve 170, the switching between focused and floodlight illumination modes can be achieved. To ensure the environmental sealing of the flashlight during the extension and retraction adjustment process, the third sealing ring 102 is compressed between the inner wall of the telescopic sleeve 170 and the outer wall of the connecting cylinder 110, forming a dynamic sealing interface. This allows for smooth axial sliding while effectively preventing external moisture and dust from entering the interior of the lamp tube 100 along the sliding gap, especially preventing contaminants from contacting the circuit board 300 or the LED bead 140.

[0036] Furthermore, in this embodiment, please refer to Figure 2 , Figure 5 and Figure 7The lamp holder 100 also includes a wave-shaped female cylinder 160 and a lamp holder 130. The lamp holder 130 is connected to the end of the connecting cylinder 110 and is provided with a lamp bead 140. The telescopic sleeve 170 is rotatably sleeved on the outer periphery of the lamp holder 130. The end periphery of the lamp holder 130 facing the lens 180 is provided with a first wave groove 133. The wave-shaped female cylinder 160 is fixed to the inner periphery of the telescopic sleeve 170 at least in the circumferential direction. The end of the wave-shaped female cylinder 160 is provided with a second wave groove 161. The first wave groove 133 and the second wave groove 161 slide and abut against each other in the circumferential direction. This can be understood as providing axial drive and a clear sense of gear position for the telescopic sleeve 170 during rotation. When the telescopic sleeve 170 rotates relative to the lamp holder 130, the first wave groove 133 and the second wave groove 161 slide against each other under axial pressure, forming a multi-point periodic convex-concave wave friction structure. This generates a clear click feel and positioning feedback as the peaks and troughs alternately pass through, and pulls the telescopic sleeve 170 to slide axially between two extreme adjustment positions, thereby achieving stable locking of the axial extreme adjustment position corresponding to the rotation position of the telescopic sleeve 170. In this way, not only is the user given clear tactile feedback, making it easy to switch between spotlight, floodlight or other preset lighting modes, but the surface contact between the first wave groove 133 and the second wave groove 161 also restricts the free rotation of the telescopic sleeve 170 in the non-operational state, improving the stability of use; at the same time, since the wave mother sleeve 160 and the telescopic sleeve 170 are integrated and fixed, the lamp holder 130 and the connecting tube 110 remain stationary and the internal circuit board 300 and the lamp bead 140 are not affected by rotation, ensuring the stability of the flashlight in use.

[0037] In one embodiment, please refer to Figure 2 , Figure 5 and Figure 9The flashlight 100 has a lamp holder 130 at one end. Along the axial direction of the lamp holder 130, a lamp bead 140 is disposed on one side. The flashlight also includes an energy storage unit 200 installed within the lamp holder 100. The lamp bead 140 and the energy storage unit 200 are electrically connected via a circuit board 300. Along the axial direction of the lamp holder 100, one side of the circuit board 300 abuts against the other side of the lamp holder 130, and the other side of the circuit board 300 abuts against the end of the energy storage unit 200 facing the lamp holder 130. This can be understood as follows: along the axial direction of the lamp holder 100, one side of the circuit board 300 tightly abuts against the side of the lamp holder 130 away from the lamp bead 140, while the other side of the circuit board 300 abuts against the end face of the energy storage unit 200 facing the lamp holder 130. The LED chip 140 is electrically connected to the drive circuit on the circuit board 300 through a conductive path, and the energy storage device 200 is also electrically connected to the power input terminal on the circuit board 300 through positive and negative contacts, thus forming a complete power supply circuit. Thus, in this embodiment, the energy storage component 200, which was originally only used for power supply, is transformed into one of the supporting elements of the circuit board 300. During the assembly process, the circuit board 300 and the energy storage component 200 are simply pressed into the lamp tube 100 axially in sequence. Under the action of the energy storage component 200, the circuit board 300 is stably clamped between the lamp holder 130 and the end face of the energy storage component 200. There is no need to set up additional auxiliary fixing structures such as buckles 810, brackets, screws or adhesives, which simplifies the assembly process of the circuit board 300 in the flashlight. Furthermore, when the flashlight is dropped or subjected to severe impact, the lamp holder 130, the circuit board 300 and the energy storage component 200 form a continuous and rigid axial force chain, which suppresses the swaying, warping or displacement of the circuit board 300 in the radial or axial direction, avoids functional failure caused by fatigue fracture of solder joints or poor contact, and thus ensures the installation stability of the circuit board 300 and the energy storage component 200.

[0038] Since both sides of the circuit board 300 are in contact with the rigid component surface, its overall flatness is maintained, which is conducive to the heat dissipation through the lamp holder 130 or the outer shell of the energy storage component 200, further improving the thermal stability and long-term reliability under high power operation. It should be noted that the lamp holder 130 connecting the lamp bead 140 can be detachably mounted on the lamp tube 100, with the energy storage component 200 first installed inside the lamp tube 100, then the circuit board 300 installed inside the lamp tube 100, and then the lamp holder 130 fixed; or the lamp holder 130 of the lamp bead 140 can be fixed to the end of the lamp tube 100, with the circuit board 300 first installed inside the lamp tube 100 at the end away from the lamp bead 140, then the energy storage component 200 installed inside the lamp tube 100, and then the bottom cover is set to press the energy storage component 200 inside the lamp tube 100, so that at least the circuit board 300 and the energy storage component 200 are installed and fixed along the axial direction of the lamp tube 100, which improves the convenience of assembly and the stability after installation.

[0039] In one embodiment, please refer to Figure 2 , Figure 5 and Figure 9 A buffer 150 is provided on the side of the lamp holder 130 facing the circuit board 300, and the buffer 150 abuts against the circuit board 300. The buffer 150 can be made of flexible materials such as silicone pads, rubber rings, foam or elastic polymers, and its shape can be adapted to the end face of the lamp holder 130 facing the circuit board 300 and fixedly embedded in the end face of the lamp holder 130 facing the circuit board 300. When the circuit board 300 is inserted along the axial direction of the lamp tube 100 and is pushed from the other side by the energy storage member 200, the side of the circuit board 300 near the lamp holder 130 no longer directly contacts the lamp holder 130, but forms a flexible abutment with the buffer 150. On the one hand, the buffer 150 can absorb and disperse transient stress when the flashlight is dropped or impacted, preventing the impact energy from being transferred to the circuit board 300 and its electronic components, thereby improving the flashlight's vibration and impact resistance. On the other hand, during the assembly process, the buffer 150 can also compensate for dimensional deviations caused by manufacturing tolerances between the lamp holder 130, the circuit board 300 and the energy storage component 200, ensuring that the circuit board 300 is subjected to uniform force and is stably positioned, while preventing board deformation or component damage due to excessive compression.

[0040] Furthermore, in this embodiment, please refer to Figure 2 , Figure 5 and Figure 9 The lamp holder 130 has a recessed fixing groove 131 on the side facing the circuit board 300. The buffer member 150 is fixed in the fixing groove 131 and at least partially protrudes from the opening of the fixing groove 131. Here, the contour of the fixing groove 131 matches the shape of the buffer member 150, which can effectively limit the buffer member 150 in the radial direction, preventing it from shifting, falling off, or misaligning during assembly or use. The part of the buffer member 150 protruding from the groove will undergo moderate compression deformation when the circuit board 300 is axially pressed by the energy storage member 200, thereby forming a stable flexible contact interface between the lamp holder 130 and the circuit board 300. In this way, the positioning of the buffer member 150 by the fixing groove 131 avoids clamping failure or unstable electrical connection caused by the displacement of the buffer member 150. Therefore, when the flashlight is subjected to drop or vibration impact, the buffer member 150 can effectively absorb and dissipate impact energy, improving the stability and drop resistance of the internal electronic components of the flashlight. It should be noted that the buffer 150 can be fixed to the fixing groove 131 by adhesive.

[0041] In one embodiment, please refer to Figure 5 , Figure 8 and Figure 9The inner wall of the lamp holder 100 is recessed with a positioning groove 111 extending axially, and the side edge of the circuit board 300 is engaged in the positioning groove 111. It can be understood that the positioning groove 111 is axially continuous along the lamp holder 100, and its cross-sectional shape is adapted to the side edge of the circuit board 300, so that after the circuit board 300 is installed in the lamp holder 100, at least one edge of the circuit board 300 can be embedded and confined in the positioning groove 111, thereby achieving alignment and stable constraint in the circumferential and radial directions. Combined with the aforementioned description that the circuit board 300 is axially held by the buffer member 150 on the lamp holder 130 side and the end face of the energy storage member 200, this embodiment further restricts the circumferential and radial degrees of freedom of the circuit board 300 through the positioning groove 111, preventing it from deflecting, warping, or shifting due to vibration, impact, or thermal expansion and contraction during assembly, transportation, or use. This not only improves the ease of positioning the circuit board 300 during installation, but also, when the flashlight is subjected to a drop impact, the cooperation between the positioning groove 111 and the edge of the circuit board 300 can work together with the axial clamping force to form an all-round limit, enhancing the drop resistance of the internal electronic components.

[0042] Furthermore, in this embodiment, please refer to Figure 5 , Figure 8 and Figure 9 The lamp holder 130 is located at the end of the connecting cylinder 110 away from the cylinder body 120. The circuit board 300 is located inside the connecting cylinder 110, and the energy storage component 200 is located inside the cylinder body 120. The positioning groove 111 extends axially at least through the end of the connecting cylinder 110. It should be noted that the positioning groove 111 extends at least to the junction of the connecting cylinder 110 and the cylinder body 120. This arrangement allows the side edge of the circuit board 300 to be engaged in the positioning groove 111 after being inserted into the connecting cylinder 110, achieving radial and circumferential positioning. At the same time, since the positioning groove 111 spans the junction area of ​​the connecting cylinder 110 and the cylinder body 120 axially, even if the connecting cylinder 110 and the cylinder body 120 are connected by threads, snap clips 810, or welding, it can be ensured that the circuit board 300 slides in smoothly and is continuously guided during assembly, avoiding jamming or improper installation of the circuit board 300 due to misalignment of the two cylinder sections. In addition, dividing the lamp tube 100 into two sections, the connecting tube 110 and the tube body 120, is beneficial to the molding of the lamp tube 100 and reduces the cost.

[0043] In one embodiment, please refer to Figure 5 , Figure 8 and Figure 9The inner wall of the connecting cylinder 110 has a protruding reinforcing portion 112, and a positioning groove 111 is formed on the reinforcing portion 112. The connecting cylinder 110 is provided with two positioning grooves 111 distributed radially, and the distance between the bottom walls of the two positioning grooves 111 is not greater than the inner diameter of the cylinder body 120. Without loss of generality, the reinforcing portion 112 extends axially inside the connecting cylinder 110, presenting a flat shape that thickens the cylinder wall of the connecting cylinder 110. By locally thickening the inner wall of the connecting cylinder 110 to form the reinforcing portion 112, and opening the positioning groove 111 on the reinforcing portion 112, the structural rigidity and deformation resistance of the connecting cylinder 110 in the lamp holder 130 mounting area are improved, and a stable guide and limit are provided for the circuit board 300. The connecting cylinder 110 has two radially symmetrically arranged positioning grooves 111. Since the distance between the bottom walls of the two positioning grooves 111 is controlled within the range not exceeding the inner diameter of the cylinder body 120, the two side edges of the circuit board 300 can smoothly slide into the positioning grooves 111 when it is installed from the cylinder body 120 towards the connecting cylinder 110, without causing assembly interference due to abrupt changes in the inner diameter of the connecting cylinder 110 or excessive protrusion of the reinforcing part 112. This ensures that even if the connecting cylinder 110 and the cylinder body 120 are manufactured and assembled separately, the circuit board 300 can still maintain continuous support across the interface between the two, avoiding stress concentration or board warping caused by structural steps or misalignments.

[0044] In one embodiment, please refer to Figures 7 to 9 The lamp holder 130 has a fastening hole 134, and the inner wall of the connecting cylinder 110 has a protruding connecting part 113. The fastening hole 134 and the connecting part 113 are opposite each other in the axial direction of the connecting cylinder 110. The connecting part 113 and the positioning groove 111 are offset in the circumferential direction. The lamp holder 130 is connected to the connecting part 113 by fasteners passing through the fastening hole 134. It can be understood that the shape of the connecting part 113 is similar to that of the reinforcing part 112 in the above embodiment, except that the connecting part 113 is connected to the lamp holder 130 at the end of the connecting cylinder 110. When installing the lamp holder 130, fasteners such as screws or bolts are sequentially passed through the fastening holes 134 on the lamp holder 130 and screwed or riveted to the connecting part 113, thereby firmly fixing the lamp holder 130 to the end of the connecting cylinder 110 away from the cylinder body 120. This design ensures that the lamp holder 130 will not loosen or fall off under high vibration or drop conditions, guaranteeing the stability of the optical axis of the lamp bead 140. Furthermore, because the connecting part 113 and the positioning groove 111 are staggered in the circumferential direction, the connecting part 113 can independently bear the fastening load, while the positioning groove 111 is dedicated to precisely guiding and limiting the circuit board 300. Their functions are separate and do not weaken each other, avoiding localized strength reduction or assembly difficulties caused by structural overlap. In addition, the connecting part 113, as an inner wall protrusion structure, also enhances the rigidity of the end of the connecting cylinder 110, further improving the impact resistance of the connecting cylinder 110 in conjunction with the aforementioned reinforcing part 112.

[0045] Furthermore, in this embodiment, please refer to Figures 7 to 9 The lamp holder 130 has a wire-passing hole 135, which is radially distributed with the positioning groove 111 and axially opposite to the circuit board 300. The lamp bead 140 is electrically connected to the circuit board 300 through a conductor passing through the wire-passing hole 135. This can be understood as the lamp bead 140 being electrically connected to the circuit board 300 after passing through the wire-passing hole 135 with a conductor such as a flexible ribbon cable, metal pin, or enameled wire. This allows the lamp bead 140 to be located outside the lamp holder 130, while the control circuit is integrated on the circuit board 300 inside the connecting cylinder 110. The two are electrically connected through the wire-passing hole 135, ensuring both heat dissipation space and optical layout freedom for the lamp bead 140, while avoiding exposure of sensitive electronic components to high-temperature or high-humidity environments at the front end. Meanwhile, since the wire hole 135 and the positioning groove 111 are of the same diameter, after the circuit board 300 is installed, the conductor path is short and straight with fewer bends, which helps to shorten the conductor connecting the circuit board 300 to the lamp bead 140, reduce the risk of line impedance and signal interference, and also reduce the tensile stress on the conductor during assembly, thus improving the reliability of electrical connection.

[0046] In one embodiment, please refer to Figure 2 , Figure 6 and Figure 9 The energy storage device 200 includes a battery housing 210 and a battery 220. The battery 220 is mounted on the battery housing 210. A limiting groove 211 is provided at the end of the battery housing 210 facing the circuit board 300. The limiting groove 211 extends radially, and the side edge of the circuit board 300 is engaged in the limiting groove 211. It can be understood that the energy storage device 200 not only provides electrical energy as a power unit, but its battery housing 210 also has a limiting function for the circuit board 300: when the circuit board 300 is installed into the connecting cylinder 110 and abuts against the end face of the battery housing 210 axially, its side edge is embedded in the limiting groove 211, thereby forming an effective constraint in the radial and circumferential directions. Combined with the axial abutment action of the energy storage device 200 against the circuit board 300, it can prevent the circuit board 300 from shifting, warping, or loosening its conductor connection with the lamp holder 130 due to vibration, drop, or thermal expansion and contraction. Since the limiting groove 211 is located at the end of the battery case 210 and cooperates with the positioning groove 111 on the inner wall of the lamp tube 100 and the buffer 150 on the lamp holder 130, they can work together to further enhance the positioning continuity and structural stability of the circuit board 300 in the axial direction of the lamp tube 100.

[0047] Furthermore, in this embodiment, please refer to Figure 2 , Figure 5 and Figure 6The battery casing 210 also has two reinforcing blocks 212 at its end facing the circuit board 300. These two reinforcing blocks 212 are located at both ends of the limiting groove 211 in the radial direction of the battery casing 210. By symmetrically arranging the reinforcing blocks 212 at both ends of the limiting groove 211 in the radial direction, the rigidity and deformation resistance of the end of the battery casing 210 are enhanced when subjected to axial clamping force and external impact loads. When the side edge of the circuit board 300 is inserted into the limiting groove 211, its two sides are precisely clamped or supported by the two reinforcing blocks 212, preventing the circuit board 300 from lateral movement or torsion during vibration or drop, and avoiding plastic deformation or cracking of the limiting groove 211 due to concentrated force. Simultaneously, the reinforcing blocks 212 also compensate for the weakening of the end structure of the battery casing 210 caused by the opening of the limiting groove 211, ensuring that the structural strength of the energy storage device 200 is not affected, effectively maintaining a stable contact relationship between the circuit board 300 and the battery casing 210, and ensuring the reliability of the electrical connection.

[0048] In one embodiment, please refer to Figure 5 and Figure 6 The battery casing 210 has a clearance opening 213 at the end facing the circuit board 300, through which a conductor for electrical connection between the circuit board 300 and the battery 220 passes. Specifically, the conductor can be configured as a nickel strip, flexible cable, or solder pin, with one end electrically connected to the electrode of the battery 220, and the other end passing through the clearance opening 213 to achieve electrical connection with the corresponding pad or terminal on the circuit board 300. The position and size of the clearance opening 213 are designed to ensure that the conductor is not interfered with by the end face structure of the battery casing 210 during assembly, while avoiding breakage or increased contact resistance due to excessive compression or bending. This avoids problems such as large space occupation, easy wear, and poor vibration resistance caused by the conductor needing to be routed around or exposed when the end face of the energy storage device 200 is closed or lacks a dedicated wiring channel. In addition, the reasonable layout of the clearance port 213, the aforementioned limiting groove 211, and the reinforcing block 212 on the end face ensures that they do not interfere with each other. This not only ensures the positioning accuracy of the circuit board 300, but also ensures the structural strength of the battery case 210 through the setting of the reinforcing block 212. This prevents functional failure caused by loose, broken or short-circuited conductors when the flashlight is dropped or impacted, thus improving the stability of the flashlight's use.

[0049] In one embodiment, please refer to Figure 7 and Figure 9Along the axial direction of the lamp holder 100, the lamp holder 130, on the side opposite to the circuit board 300, has intermittently distributed snap-fit ​​grooves 132. The lamp bead 140 is snapped into the snap-fit ​​grooves 132. The snap-fit ​​grooves 132 can be understood as consisting of multiple grooves or notches spaced circumferentially along the outer end face of the lamp holder 130. Their shape matches the outer edge contour of the lamp bead 140, allowing the lamp bead 140 to be pressed in axially during assembly and limited by the side walls of the multiple snap-fit ​​grooves 132, achieving circumferential positioning and axial anti-dislodgement. Because the snap-fit ​​grooves 132 are intermittently distributed, sufficient structural strength is maintained at the end of the lamp holder 130 to support the thermal stress and load generated during the operation of the high-power lamp bead 140, while avoiding the weakening of rigidity or obstruction of heat dissipation paths caused by continuous annular grooves. In conjunction with the rotation of the aforementioned telescopic sleeve 170, this embodiment utilizes the snap-fit ​​engagement between the snap-fit ​​groove 132 and the LED bead 140 to prevent the LED bead 140 from being affected by the rotation of the telescopic sleeve 170, thus ensuring the stability of the electrical connection between the LED bead 140 and the circuit board 300.

[0050] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A flashlight, characterized in that, include: A lamp holder, wherein a button hole is provided on the peripheral wall of the lamp holder; A circuit board is disposed inside the lamp tube and is opposite to the button hole; as well as A button assembly includes a button and a fastening ring. The button passes through the button hole and has a sealing edge around its periphery. The sealing edge abuts against the inner wall of the lamp tube along the periphery of the button hole. The fastening ring is detachably connected to the inner wall of the lamp tube and abuts against the sealing edge.

2. The flashlight as described in claim 1, characterized in that, The button is made of rubber and includes a soft rubber button and a hard rubber button. The soft rubber button covers the outer periphery of the hard rubber button, and the edge sealing is provided on the soft rubber button.

3. The flashlight as described in claim 2, characterized in that, The hard rubber button includes a pressing part and a contact part connected together. The soft rubber button covers the outer periphery of the contact part. The pressing part is exposed outside the button hole. The contact part extends toward the circuit board and can abut against the circuit board.

4. The flashlight as described in claim 1, characterized in that, The fastening ring is fixed to the inner wall of the lamp tube by bolts.

5. The flashlight as described in claim 1, characterized in that, The lamp tube also has a card slot on its peripheral wall. The card slot and the button hole are radially opposite each other. The flashlight also includes a charging component, which is snapped into the card slot and electrically connected to the circuit board.

6. The flashlight as described in claim 5, characterized in that, The shape of the card interface is adapted to the outer periphery of the fastening ring, and the circuit board is mounted inside the lamp tube in the axial direction of the lamp tube; And / or, the charging component is configured as a magnetic charging structure, including a magnetic fixing plate and a charging terminal, the magnetic fixing plate being exposed on the outer peripheral wall of the lamp tube, and the charging terminal being electrically connected to the circuit board.

7. The flashlight as described in claim 5, characterized in that, The outer peripheral wall of the lamp tube is recessed with a mounting groove, the card interface is disposed on the bottom wall of the mounting groove, the charging component is provided with a buckle, the charging component is installed in the mounting groove, and a first sealing ring is clamped between the charging component and the side wall of the mounting groove, and the buckle is engaged with the periphery of the card interface.

8. The flashlight as described in any one of claims 1 to 7, characterized in that, The lamp tube includes a connecting tube and a tube body. The button hole is disposed on the connecting tube. The button assembly and the circuit board are mounted on the connecting tube. The ends of the tube body and the connecting tube are sleeved together and clamped with a second sealing ring.

9. The flashlight as described in any one of claims 1 to 7, characterized in that, The lamp tube includes a telescopic sleeve and a connecting tube. The button hole is disposed in the connecting tube. The button assembly and the circuit board are mounted in the connecting tube. An LED bead electrically connected to the circuit board is disposed at the end of the connecting tube. A lens is disposed at the end of the telescopic sleeve. The lens and the LED bead are axially opposite each other. The telescopic sleeve is sleeved on the outside of the connecting tube and can slide axially relative to the connecting tube. At the end away from the lens, a third sealing ring is sandwiched between the telescopic sleeve and the connecting tube.

10. The flashlight as described in claim 9, characterized in that, The lamp tube also includes a wave-shaped main tube and a lamp holder. The lamp holder is connected to the end of the connecting tube and is provided with the lamp bead. The telescopic sleeve is rotatably fitted around the outer periphery of the lamp holder. The lamp holder has a first wave-shaped groove on the periphery of the end facing the lens. The wave-shaped main tube is fixed to the inner periphery of the telescopic sleeve at least in the circumferential direction. The end of the wave-shaped main tube has a second wave-shaped groove. The first wave-shaped groove and the second wave-shaped groove slide and abut against each other in the circumferential direction.

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