flashlight

Abstract

This invention discloses a flashlight, relating to the field of lighting equipment technology. The flashlight includes a lamp barrel, an energy storage component, and a circuit board. A lamp holder is located at one end of the lamp barrel, and an LED chip is mounted on one side of the lamp holder along the axial direction of the lamp barrel. The energy storage component is installed inside the lamp barrel. The circuit board is installed inside the lamp barrel, and the LED chip and the energy storage component are electrically connected via the circuit board. Along the axial direction of the lamp barrel, one side of the circuit board abuts against the other side of the lamp holder, and the other side of the circuit board abuts against the end of the energy storage component facing the lamp holder. The technical solution provided by this invention aims to improve the ease of installation of the circuit board while ensuring the installation stability of the circuit board and the energy storage component.

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 independent brackets, clips, or adhesives to fix the internal circuit board. However, while these methods can achieve the positioning of the circuit board to a certain extent, they require the addition of special fasteners, which not only increases material costs but also adds assembly steps and reduces production efficiency. Furthermore, when subjected to external impacts or drops, the circuit board is prone to displacement, warping, or even solder joint breakage due to insecure fixing, leading to electrical connection failure. Summary of the Invention

[0003] The main objective of this invention is to provide a flashlight that improves the ease of installation of the circuit board while ensuring the installation stability of the circuit board and energy storage components.

[0004] To achieve the above objectives, the flashlight proposed in this invention includes: A lamp tube, one end of which is provided with a lamp holder, and along the axial direction of the lamp tube, a lamp bead is provided on one side of the lamp holder; Energy storage device, said energy storage device being installed inside the lamp tube; and A circuit board is installed inside the lamp tube. The lamp beads and the energy storage device are electrically connected through the circuit board. In the axial direction of the lamp tube, one side of the circuit board abuts against the other side of the lamp holder, and the other side of the circuit board abuts against the end of the energy storage device facing the lamp holder.

[0005] In one embodiment, a buffer is provided on the side of the lamp holder facing the circuit board, and the buffer abuts against the circuit board.

[0006] In one embodiment, the lamp holder has a recessed fixing groove on the side facing the circuit board, the buffer is fixed to the fixing groove, and at least partially protrudes and is exposed at the opening of the fixing groove.

[0007] In one embodiment, the inner wall of the lamp tube is recessed with a positioning groove extending axially, and the side edge of the circuit board is engaged in the positioning groove.

[0008] In one embodiment, the lamp tube includes a connecting tube and a tube body connected together, the lamp holder is disposed at the end of the connecting tube away from the tube body, the circuit board is located inside the connecting tube, the energy storage device is located inside the tube body, and the positioning groove extends axially through at least the end connected to the tube body.

[0009] In one embodiment, a reinforcing portion is formed protruding from the inner wall of the connecting cylinder, and a positioning groove is formed in the reinforcing portion. The connecting cylinder is provided with two positioning grooves distributed radially, and the distance between the bottom walls of the two positioning grooves is not greater than the inner diameter of the cylinder body.

[0010] In one embodiment, the lamp holder has a fastening hole, and the inner wall of the connecting cylinder has a protruding connecting part. In the axial direction of the connecting cylinder, the fastening hole and the connecting part are opposite to each other, and the connecting part and the positioning groove are staggered in the circumferential direction. The lamp holder is connected to the connecting part by fasteners passing through the fastening hole.

[0011] In one embodiment, the lamp holder has a wire-passing hole, which is radially distributed with the positioning groove and axially opposite to the circuit board. The lamp bead is electrically connected to the circuit board through a conductor passing through the wire-passing hole.

[0012] In one embodiment, the energy storage device includes a battery casing and a battery, the battery being mounted in the battery casing, the end of the battery casing facing the circuit board having a limiting groove extending radially, and the side edge of the circuit board being engaged with the limiting groove.

[0013] In one embodiment, the battery casing is further provided with two reinforcing blocks at the end facing the circuit board, and the two reinforcing blocks are respectively disposed at both ends of the limiting groove in the radial direction of the battery casing.

[0014] In one embodiment, the battery casing has a clearance opening at the end facing the circuit board, the clearance opening allowing conductors electrically connected to the circuit board and the battery to pass through.

[0015] In one embodiment, the flashlight further includes a wave-shaped female tube and a telescopic sleeve. The telescopic sleeve is rotatably fitted over the lamp holder. A first wave-shaped groove is provided on the periphery of the end of the lamp holder away from the circuit board. 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.

[0016] In one embodiment, on the axial direction of the lamp tube, the lamp holder is provided with a snap-fit ​​groove that is discontinuously distributed circumferentially on the side opposite to the circuit board, and the lamp bead is snapped into the snap-fit ​​groove.

[0017] The technical solution of this invention involves fixing a lamp holder to one end of a lamp tube, mounting an LED chip on the side of the lamp holder facing outwards, and inserting an energy storage device into the lamp tube along its axial direction, serving as the power unit for the flashlight. A circuit board is disposed inside the lamp tube, located between the lamp holder and the energy storage device: along the axial direction of the lamp tube, one side of the circuit board tightly abuts against the side of the lamp holder away from the LED chip, while the other side of the circuit board abuts against the end face of the energy storage device facing the lamp holder. The LED chip is electrically connected to the drive circuit on the circuit board via a conductive path, and the energy storage device is also electrically connected to the power input terminal on the circuit board via positive and negative contacts, thus forming a complete power supply circuit. In this way, the solution transforms the energy storage component, which was originally only used for power supply, into one of the supporting elements of the circuit board. During the assembly process, the circuit board and the energy storage component are simply pressed into the lamp tube axially in sequence. Under the action of the energy storage component, the circuit board is stably clamped between the lamp holder and the end face of the energy storage component. There is no need to set up additional clips, brackets, screws or adhesives or other auxiliary fixing structures, which simplifies the assembly process of the circuit board in the flashlight. Furthermore, when the flashlight is dropped or subjected to severe impact, the lamp holder, circuit board and energy storage component form a continuous and rigid axial force chain, which suppresses the swaying, warping or displacement of the circuit board 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 and energy storage component. Attached Figure Description

[0018] 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.

[0019] 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 A in the middle; Figure 4 for Figure 1 Schematic diagram of the middle connecting cylinder; Figure 5 for Figure 1 Schematic diagram of the energy storage device; Figure 6 for Figure 1 Schematic diagram of the structure of the central lamp holder; Figure 7 for Figure 1 A diagram illustrating the explosion of a flashlight; Figure 8 for Figure 1 Another structural diagram of the connecting cylinder; Figure 9 for Figure 2 A magnified view of a section at point B.

[0020] 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 passage hole; 140. Lamp bead component; 150. Buffer component; 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; 400, Waveform sleeve; 410, Second waveform groove; 500, Telescopic sleeve; 600, Lens; 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.

[0021] 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

[0022] 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.

[0023] 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.

[0024] 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.

[0025] This invention proposes a flashlight.

[0026] Please refer to Figures 1 to 3 In one embodiment of the present invention, the flashlight includes: The lamp tube 100 has a lamp holder 130 at one end and a lamp bead 140 on one side of the lamp holder 130 along the axial direction of the lamp tube 100. Energy storage component 200, which is installed inside lamp holder 100; and Circuit board 300 is installed inside lamp tube 100. Lamp bead 140 and energy storage unit 200 are electrically connected through circuit board 300. In the axial direction of lamp tube 100, one side of circuit board 300 abuts against the other side of lamp holder 130, and the other side of circuit board 300 abuts against the end of energy storage unit 200 facing lamp holder 130.

[0027] The technical solution of this invention involves fixing a lamp holder 130 to one end of a lamp tube 100, mounting an LED chip 140 on the side of the lamp holder 130 facing the outside of the lamp tube 100, and inserting an energy storage unit 200 into the lamp tube 100 along its axial direction, serving as the power supply unit for the flashlight. A circuit board 300 is disposed inside the lamp tube 100, located between the lamp holder 130 and the energy storage unit 200. Along the axial direction of the lamp tube 100, one side of the circuit board 300 tightly abuts against the side of the lamp holder 130 away from the LED chip 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 via a conductive path, and the energy storage unit 200 is also electrically connected to the power input terminal on the circuit board 300 via positive and negative contacts, thus forming a complete power supply circuit. Thus, this solution transforms the energy storage component 200, originally used only for power supply, into one of the supporting elements of the circuit board 300. During assembly, the circuit board 300 and the energy storage component 200 are simply pressed axially into the lamp tube 100 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 clips 810, brackets, screws, or adhesives or other auxiliary fixing structures, thereby simplifying 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, and avoids functional failure caused by fatigue fracture of solder joints or poor contact, thereby ensuring the installation stability of the circuit board 300 and the energy storage component 200.

[0028] 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. In addition, the axial, radial, circumferential and other directional descriptions mentioned in this embodiment are all based on the lamp holder 100. For example, the axial direction mentioned in this embodiment is the axial direction of the lamp holder 100, and will not be repeated here.

[0029] In one embodiment, please refer to Figure 2 and Figure 3 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.

[0030] Furthermore, in this embodiment, please refer to Figure 2 and Figure 3 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.

[0031] In one embodiment, please refer to Figure 2 and Figure 4The 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.

[0032] Furthermore, in this embodiment, please refer to Figure 2 and Figure 4 The lamp tube 100 includes a connecting tube 110 and a tube body 120 connected together. The lamp holder 130 is disposed at the end of the connecting tube 110 away from the tube body 120. The circuit board 300 is located inside the connecting tube 110. The energy storage component 200 is located inside the tube body 120. The positioning groove 111 extends through at least the end of the connecting tube 110 in the axial direction. 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 the connecting cylinder 110 is inserted, achieving radial and circumferential positioning. Simultaneously, since the positioning groove 111 axially spans the junction area of ​​the connecting cylinder 110 and the cylinder body 120, even if the connecting cylinder 110 and the cylinder body 120 are connected by threads, snap-fit ​​810, or welding, it ensures that the circuit board 300 slides smoothly into the assembly process and is continuously guided, preventing jamming or improper installation of the circuit board 300 due to misalignment of the two cylinder sections. Furthermore, dividing the lamp tube 100 into two sections, the connecting cylinder 110 and the cylinder body 120, facilitates the molding of the lamp tube 100 and reduces costs.

[0033] In one embodiment, please refer to Figure 2 and Figure 4The 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.

[0034] In one embodiment, please refer to Figure 2 , Figure 4 and Figure 6 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.

[0035] Furthermore, in this embodiment, please refer to Figure 2 , Figure 4 and Figure 6 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.

[0036] In one embodiment, please refer to Figure 2 , Figure 5 and Figure 7 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.

[0037] Furthermore, in this embodiment, please refer to Figure 2 , Figure 5 and Figure 7The 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.

[0038] In one embodiment, please refer to Figure 2 , Figure 5 and Figure 7 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.

[0039] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 7The flashlight also includes a wave-shaped female tube 400 and a telescopic sleeve 500. The telescopic sleeve 500 is rotatably sleeved on the outside of the lamp holder 130. A first wave groove 133 is provided on the periphery of the end of the lamp holder 130 away from the circuit board 300. The wave-shaped female tube 400 is fixed to the inner periphery of the telescopic sleeve 500 at least in the circumferential direction. A second wave groove 410 is provided at the end of the wave-shaped female tube 400. The first wave groove 133 and the second wave groove 410 slide and abut against each other in the circumferential direction. This can be understood as follows: through the meshing sliding contact of the first wave groove 133 and the second wave groove 410, a rotary adjustment mechanism is formed. When the user rotates the telescopic sleeve 500, the wave-shaped main sleeve 400 rotates synchronously. Its second wave groove 410 slides along the first wave groove 133 of the lamp holder 130, generating a clear click-like feel and positioning feedback as it alternately crosses the crests and troughs. This pulls the telescopic sleeve 500 to slide axially between two extreme adjustment positions, thereby achieving stable locking of the axial extreme adjustment position corresponding to the rotational position of the telescopic sleeve 500. In this way, through the cooperation of the second wave groove 410 of the wave-shaped main sleeve 400 and the first wave groove 133 of the lamp holder 130, the axial position of the telescopic sleeve 500 is changed, thereby adjusting the distance between the lamp bead 140 and the end lens 600 of the telescopic sleeve 500, realizing the adjustment of the focal length and divergence angle, thus changing the brightness and illumination range of the flashlight and improving the ease of use of the flashlight. In addition, the first wave groove 133 and the second wave groove 410 are respectively integrated into the end face of the lamp holder 130 and the wave mother tube 400, eliminating the need for additional cams, springs or micro switches, which simplifies the assembly structure for adjusting the flashlight's focus and illumination range. Furthermore, users can adjust the focus and illumination range simply by rotating the telescopic sleeve 500, thereby improving the user's ease of operation.

[0040] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 6 Along 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 500, 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 500, thus ensuring the stability of the electrical connection between the LED bead 140 and the circuit board 300.

[0041] In one embodiment, please refer to Figure 2 , Figure 8 and Figure 9 The lamp holder 100 has a button hole 114 on its peripheral wall. The circuit board 300 is opposite to the button hole 114. The flashlight also includes a button assembly 700, which includes a button 710 and a fastening ring 720. The button 710 passes through the button hole 114, and the periphery of the button 710 is provided with a sealing edge 715. The sealing edge 715 abuts against the inner wall of the lamp holder 100 along the periphery of the button hole 114. The fastening ring 720 is detachably connected to the inner wall of the lamp holder 100 and abuts against the sealing edge 715. In this way, by passing the button 710 through the button hole 114 and sealingly abutting against the button hole 114 with the outwardly extending sealing edge 715 integrally formed or fixedly connected to its periphery; when the button 710 is assembled in place, the sealing edge 715 just tightly abuts against the inner wall of the lamp holder 100 along the periphery of the button hole 114, forming a sealed interface. Meanwhile, the fastening ring 720 is fixedly connected to the inner wall of the lamp tube 100 by means of clips 810, threads, or welding, and applies pressure to the sealing edge 715 from the inside, so that the sealing edge 715 is firmly clamped 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 if the button 710 were installed by injection. At the same time, the cooperation between the sealing edge 715 and the fastening ring 720 achieves a high level of waterproof protection, thus ensuring the flashlight's waterproof performance and reducing the risk of contamination damage to the circuit board 300. Furthermore, the button 710 can be replaced by removing and installing the fastening ring 720, improving the maintainability and lifespan of the flashlight. 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.

[0042] In one embodiment, please refer to Figure 8 and Figure 9The 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.

[0043] Furthermore, in this embodiment, please refer to Figure 8 and Figure 9 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.

[0044] In one embodiment, please refer to Figure 8 and Figure 9The 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.

[0045] In one embodiment, please refer to Figure 2 , Figures 7 to 9 The 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.

[0046] Furthermore, in this embodiment, please refer to Figure 8 and Figure 9The 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 operating 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 of assembling the flashlight.

[0047] Specifically, in this embodiment, please refer to Figure 2 , Figure 7 , Figure 9 The 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 an external magnetic 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 charging device to the internal battery 220. 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 attachment 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.

[0048] In one embodiment, please refer to Figure 2 and Figure 8 , Figure 9The 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.

[0049] In one embodiment, please refer to Figures 7 to 9 A button hole 114 is located in the connecting tube 110. The button assembly 700 and the 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 clamped 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.

[0050] In one embodiment, please refer to Figures 7 to 9A button hole 114 is provided in the connecting cylinder 110. The button assembly 700 and the circuit board 300 are installed in the connecting cylinder 110. The end of the connecting cylinder 110 is provided with a lamp bead 140 electrically connected to the circuit board 300. The end of the telescopic sleeve 500 is provided with a lens 600. The lens 600 and the lamp bead 140 are axially opposite each other. The telescopic sleeve 500 is sleeved on the outside of the connecting cylinder 110 and can slide axially relative to the connecting cylinder 110. At the end away from the lens 600, the telescopic sleeve 500 and the connecting cylinder 110 are sandwiched with a third sealing ring 102. 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 500 slides relative to the lamp tube 100 along the axial direction, the lens 600 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 500, 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 500 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.

[0051] 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 tube, one end of which is provided with a lamp holder, and along the axial direction of the lamp tube, a lamp bead is provided on one side of the lamp holder; An energy storage device is installed inside the lamp tube; as well as A circuit board is installed inside the lamp tube. The lamp beads and the energy storage device are electrically connected through the circuit board. In the axial direction of the lamp tube, one side of the circuit board abuts against the other side of the lamp holder, and the other side of the circuit board abuts against the end of the energy storage device facing the lamp holder.

2. The flashlight as described in claim 1, characterized in that, A buffer is provided on the side of the lamp holder facing the circuit board, and the buffer abuts against the circuit board.

3. The flashlight as described in claim 2, characterized in that, The lamp holder has a recessed fixing groove on the side facing the circuit board. The buffer is fixed to the fixing groove and at least partially protrudes from the opening of the fixing groove.

4. The flashlight as described in claim 1, characterized in that, The inner wall of the lamp tube is recessed with a positioning groove that extends axially, and the side edge of the circuit board is engaged in the positioning groove.

5. The flashlight as described in claim 4, characterized in that, The lamp tube includes a connecting tube and a tube body connected together. The lamp holder is disposed at the end of the connecting tube away from the tube body. The circuit board is located inside the connecting tube. The energy storage device is located inside the tube body. The positioning groove extends axially through at least the end of the tube body connected to the tube body.

6. The flashlight as described in claim 5, characterized in that, The inner wall of the connecting cylinder is provided with a reinforcing part, the positioning groove is formed in the reinforcing part, and the connecting cylinder is provided with two positioning grooves distributed radially. The distance between the bottom walls of the two positioning grooves is not greater than the inner diameter of the cylinder body.

7. The flashlight as described in claim 5, characterized in that, The lamp holder has a fastening hole, and the inner wall of the connecting cylinder has a protruding connecting part. In the axial direction of the connecting cylinder, the fastening hole and the connecting part are opposite to each other. The connecting part and the positioning groove are staggered in the circumferential direction. The lamp holder is connected to the connecting part by fasteners passing through the fastening hole. And / or, the lamp holder has a wire-passing hole, the wire-passing hole and the positioning groove are radially distributed and axially opposite to the circuit board, and the lamp bead is electrically connected to the circuit board through the wire-passing hole via a conductor.

8. The flashlight as described in claim 1, characterized in that, The energy storage device includes a battery casing and a battery. The battery is mounted in the battery casing. The end of the battery casing facing the circuit board is provided with a limiting groove. The limiting groove extends radially, and the side edge of the circuit board is engaged with the limiting groove.

9. The flashlight as described in claim 8, characterized in that, The battery casing is further provided with two reinforcing blocks at the end facing the circuit board, and the two reinforcing blocks are respectively disposed at both ends of the limiting groove in the radial direction of the battery casing. And / or, the battery casing has a clearance opening at the end facing the circuit board, the clearance opening allowing conductors electrically connected to the circuit board and the battery to pass through.

10. The flashlight as described in any one of claims 1 to 9, characterized in that, The flashlight also includes a wave-shaped female tube and a telescopic sleeve. The telescopic sleeve is rotatably fitted over the lamp holder. A first wave-shaped groove is provided on the periphery of the end of the lamp holder away from the circuit board. 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 and abut against each other in the circumferential direction. And / or, along the axial direction of the lamp tube, the lamp holder is provided with a circumferentially discontinuously distributed snap-fit ​​groove on the side opposite to the circuit board, and the lamp bead is snapped into the snap-fit ​​groove.

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