Flashlight tail switch

Abstract

The utility model discloses a flashlight tail switch belongs to flashlight technical field, this flashlight tail switch, including the tail of the barrel, the upper portion threaded joint of tail of barrel has tail cover, the inside of tail cover is provided with switch, the outside of switch is provided with the lock piece of limit, lock piece and switch limit abut, the outside of lock piece is connected with the limit of tail cover, rotatoryly be provided with the round dial between lock piece and tail cover, the lower portion of round dial and switch is connected with circuit board, and circuit board limit installation is in tail cover, through the combination structure of round dial and magnet, hall sensor, cooperate the positioning design of steel ball and spring, realize 3 and above gear's accurate switching, and 3 positioning recess evenly divide the included angle of hall sensor, and gear positioning precision is high, and there is no risk of deviation, and the control function of combining the middle press switch can expand more lighting mode, satisfy different use scene demand.

Description

Technical Field

[0001] This utility model relates to the field of flashlights, and more specifically, to a tail switch for a flashlight. Background Technology

[0002] Current flashlight tail switches primarily employ a single operation mode, specifically falling into two categories: one is a separate center-press switch, which uses axial pressing to switch power on / off and speed on / off, widely used in everyday portable flashlights; the other is a single-sided toggle switch, which uses a horizontal toggle lever to change the circuit connection, often used in outdoor scenarios requiring quick speed switching. Furthermore, while some high-end flashlights attempt combined switch designs, they are mostly separate layouts of "press + toggle," meaning the press switch and toggle switch are located in different areas of the tail, failing to form an integrated operating interface.

[0003] However, existing technologies suffer from insufficient flexibility in gear switching in practical applications: a single push-button switch can usually only achieve 2-3 fixed gear switching in a cycle, which cannot meet the user's precise selection needs for multi-mode lighting (such as strong light, weak light, strobe, SOS); a single-sided toggle switch is limited by the toggle travel, has low gear positioning accuracy, and is prone to accidental switching due to vibration.

[0004] The operation is not very convenient: the pressing and toggle components of the split combination switch are scattered, and users need to repeatedly search for and locate the switch in dimly lit outdoor environments or when operating it while wearing gloves, resulting in low operating efficiency; moreover, the toggle switch does not provide clear tactile feedback, and users cannot judge the power level by touch. How to invent a flashlight tail switch to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a flashlight tail switch, which aims to improve the problem of the existing combined flashlight switch components being scattered and difficult to operate with one hand.

[0006] This utility model is implemented as follows: a flashlight tail switch includes a tail, a tail cap is threadedly connected to the upper part of the tail, a switch is disposed inside the tail cap, a locking plate is provided on the outer limit of the switch, the locking plate abuts against the switch limit, the outer part of the locking plate is limited and connected to the tail cap limit, a circular dial is rotatably disposed between the locking plate and the tail cap, a circuit board is connected to the lower part of the circular dial and the switch, and the circuit board is limited and installed inside the tail cap.

[0007] In a preferred embodiment of this utility model, both the tail cap and the cylindrical tail are cylindrical, the inner walls at both ends of the cylindrical tail are threaded, the bottom outer wall of the tail cap is threaded, and the tail cap is threaded to the top of the cylindrical tail.

[0008] In a preferred embodiment of this utility model, a switch cap is provided above the switch, a locking piece is sleeved on the outside of the switch cap, a stepped edge is provided at the bottom of the switch cap, the stepped edge abuts against the bottom of the locking piece, and the bottom outer ring of the locking piece is threadedly connected to the inside of the tail cap.

[0009] In a preferred embodiment of this utility model, a partition is provided in the middle of the tail cover, and a threaded ring is fixedly connected to the partition. The threaded ring is threadedly connected to the locking plate. The bottom limit rotation of the circular dial is provided on the partition, and the circular dial is located between the threaded ring and the inner wall of the tail cover.

[0010] In a preferred embodiment of this utility model, the circuit board is located below the inner partition of the tail cover, and the circuit board is locked to the inner wall of the tail cover. The switch is installed above the circuit board.

[0011] In a preferred embodiment of this utility model, a Hall sensor is connected above the circuit board, a magnet is embedded below the circular dial, the magnet is correspondingly arranged with the Hall sensor, a groove is formed below the other side of the circular dial on the magnet, a steel ball is arranged below the groove, a spring is arranged below the steel ball, and the steel ball and spring are vertically mounted on the partition of the tail cover.

[0012] In a preferred embodiment of this utility model, the negative terminal of the circuit board is connected to a negative terminal spring, the negative terminal spring is located directly below the circuit board, and a bracket is sleeved on the outside of the negative terminal spring, the bracket being locked to the bottom of the circuit board.

[0013] In a preferred embodiment of this utility model, a signal spring is installed on the bracket, one end of the signal spring abuts against the circuit board, and the other end of the signal spring abuts against the inner wall of the cylinder tail.

[0014] The beneficial effects of this utility model are as follows: The flashlight tail switch obtained by the above design provides precise and versatile gear switching during use. Through the combination structure of the circular dial, magnet, and Hall sensor, along with the positioning design of the steel ball and spring, precise switching of three or more gears can be achieved. Moreover, the three positioning grooves evenly divide the included angle of the Hall sensor, resulting in high gear positioning accuracy and no risk of offset. At the same time, combined with the control function of the middle push switch, more lighting modes can be expanded to meet the needs of different usage scenarios.

[0015] Significantly improved ease of operation: The integrated layout of "center push-button switch + outer circular dial switch" is located at the bottom of the flashlight's tail, allowing users to press and rotate without having to fumble around. Furthermore, the combination of the steel ball and the spherical groove of the circular dial provides clear tactile feedback when switching gears, enabling accurate judgment of the gear status even in dim environments or when wearing gloves, greatly improving operational efficiency.

[0016] The circuit is safe, stable, and has a long service life: the tail switch is controlled by only a weak signal current when it is working, without the need to carry a large current, thus avoiding the problem of switch overheating and reducing safety hazards; the elastic conductive structure of the signal spring and the negative spring has better vibration resistance and wear resistance than hard contact, effectively avoiding poor contact and extending the service life of the switch; at the same time, the threaded connection between the tail and the tail cover and the limiting fixation of the bracket ensure that all components are firmly assembled and there is no risk of loosening during long-term use.

[0017] High structural integration and easy assembly: Each component is precisely matched through positioning grooves, threaded connections, limit snaps and other methods to form a complete tail switch assembly. The layout is compact and reasonable, with a high degree of integration. The assembly process is clear, with a clear installation sequence from the external switch structure to the internal circuit components. No complicated tooling is required, which is conducive to mass production. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of one side of the structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the internal structure provided for an embodiment of this utility model; Figure 3 A cross-sectional structural schematic diagram provided for an embodiment of this utility model; Figure 4 An exploded structural diagram provided for an embodiment of this utility model.

[0020] In the diagram: 1-Switch cap; 2-Circular dial; 3-Locking plate; 4-Tail cap; 5-Magnet; 6-Steel ball; 7-Spring; 8-Hall sensor; 9-Circuit board; 10-Switch; 11-Bracket; 12-Negative spring; 13-Signal spring; 14-Tail end. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a flashlight tail switch, including... The cylinder tail 14 has a tail cover 4 threadedly connected to its upper part. A switch 10 is installed inside the tail cover 4. A locking plate 3 is installed on the outside of the switch 10 to limit its movement. The locking plate 3 abuts against the switch 10 and is connected to the tail cover 4. A circular dial 2 is rotatably mounted between the locking plate 3 and the tail cover 4. A circuit board 9 is connected below the circular dial 2 and the switch 10 and is installed inside the tail cover 4. Through the combination structure of the circular dial 2, magnet 5, and Hall sensor 8, and the positioning design of steel ball 6 and spring 7, precise switching of 3 or more gears can be achieved. The 3 positioning grooves evenly divide the included angle of the Hall sensor 8, resulting in high gear positioning accuracy and no risk of offset. At the same time, combined with the control function of the middle push switch 10, more lighting modes can be expanded to meet the needs of different usage scenarios.

[0023] Please see Figure 3 and Figure 4 The inner wall of the tail cover 4 is provided with positioning ridges that mate with the edge of the circuit board 9, improving the installation accuracy of the circuit board 9 and preventing displacement caused by vibration. The principle is to limit the radial and axial displacement of the circuit board 9 through a mechanical positioning structure, ensuring the relative position stability of the Hall sensor 8 and the magnet 5, ensuring the accuracy of signal detection, and at the same time improving the overall compactness of the switch structure and reducing internal redundant space. Both the tail cap 4 and the tail tube 14 are cylindrical. The inner walls of both ends of the tail tube 14 are threaded, and the bottom outer wall of the tail cap 4 is threaded. The tail cap 4 and the top of the tail tube 14 are threaded together. The inner wall thread of the tail tube 14 adopts a fine thread design. With the use of thread locking adhesive, the connection sealing and anti-loosening performance are enhanced. The principle is that the fine thread has a small pitch and a large contact area, which can improve the load-bearing capacity and stability of the threaded connection. The thread locking adhesive can fill the thread gap and prevent loosening caused by long-term vibration. At the same time, the cylindrical structure allows the components to be arranged coaxially, making the overall structure more compact and easy to seamlessly connect with the flashlight body.

[0024] A switch cap 1 is provided above the switch 10, and a locking plate 3 is sleeved on the outside of the switch cap 1. The bottom of the switch cap 1 is provided with a stepped edge, which abuts against the bottom of the locking plate 3. The bottom outer ring of the locking plate 3 is connected to the internal thread of the tail cap 4. The switch cap 1 is made of soft silicone material with anti-slip texture on the surface. A buffer washer is provided on the contact surface between the stepped edge and the locking plate 3. The principle is that the soft silicone material can improve the pressing feel, the anti-slip texture increases the operating friction and avoids slipping when wet hands or wearing gloves, and the buffer washer can absorb the pressing impact, reduce the wear of the switch 10, and extend its service life. At the same time, the locking plate 3 achieves axial limitation of the circular dial 2 through thread fastening, ensuring that it will not fall off when rotating, making the structural layout more compact.

[0025] A partition is provided in the middle of the tail cover 4, and a threaded ring is fixedly connected to the partition. The threaded ring is threadedly connected to the locking plate 3. The bottom limit rotation of the circular dial 2 is set on the partition, and the circular dial 2 is located between the threaded ring and the inner wall of the tail cover 4. An annular groove is opened on the partition, and an annular boss that matches the groove is provided at the bottom of the circular dial 2. Lubricant is applied between the annular boss and the groove. The principle is that the cooperation between the annular groove and the boss realizes the precise rotation limit of the circular dial 2, avoiding radial offset. The lubricant can reduce the rotational friction and make the dial operation smoother. At the same time, the threaded connection between the threaded ring and the locking plate 3 can precisely adjust the axial clearance of the circular dial 2, making the structure more compact and preventing abnormal noise during rotation.

[0026] Circuit board 9 is located below the inner partition of tail cover 4, and circuit board 9 is locked to the inner wall of tail cover 4. Switch 10 is installed above circuit board 9. Hall sensor 8 is connected to the top of circuit board 9. Magnet 5 is embedded below circular dial 2, and magnet 5 is correspondingly set with Hall sensor 8. A groove is opened below the other side of circular dial 2 below magnet 5. Steel ball 6 is set below the groove. Spring 7 is set below steel ball 6. Steel ball 6 and spring 7 are vertically installed on the partition of tail cover 4. There are two Hall sensors 8, which are soldered to the circumference of circuit board 9 at a specific angle by SMT surface mount. Three evenly distributed spherical grooves are opened below circular dial 2. Spring 7 is a compression spring and is installed in the blind hole of the partition of tail cover 4. The diameter of steel ball 6 is adapted to the spherical groove. The principle is that two Hall sensors 8 cooperate with three spherical grooves. The rotation of the circular dial 2 drives the magnet 5 to rotate synchronously. The Hall sensors 8 detect changes in the magnetic field and output signals to realize multi-gear switching. The elastic force of the spring 7 pushes the steel ball 6 into the spherical groove to realize gear positioning. The three grooves evenly divide the included angle of the Hall sensor 8 to ensure accurate gear positioning. The close fit between the steel ball 6 and the spherical groove provides clear tactile feedback, allowing users to intuitively judge the gear status. At the same time, the installation method of compression spring and blind hole saves space and makes the structure more compact. A cylindrical groove is set at the corresponding position of the spring 7 to limit the spring 7 and the steel ball 6 and prevent displacement.

[0027] The negative terminal of the circuit board 9 is connected to a negative terminal spring 12, which is located directly below the circuit board 9. A bracket 11 is sleeved on the outside of the negative terminal spring 12, and the bracket 11 is locked to the bottom of the circuit board 9. The top of the negative terminal spring 12 is welded and fixed to the negative terminal pad of the circuit board 9. The guide groove of the bracket 11 can limit the radial displacement of the negative terminal spring 12. At the same time, the bracket 11 provides bottom support for the circuit board 9, improving the overall structural strength. The cylindrical bracket 11 is arranged coaxially with other components, further optimizing the structural compactness. A signal spring 13 is installed on the bracket 11. One end of the signal spring 13 abuts against the circuit board 9, and the other end abuts against the inner wall of the cylinder tail 14. The signal spring 13 is a cylindrical compression spring. A spring mounting groove is opened on the bracket 11. The two ends of the signal spring 13 are tightly abutted against the signal pads of the circuit board 9 and the bare aluminum conductive surface of the inner wall of the cylinder tail 14, respectively. The principle is that the cylindrical compression spring is elastic and stable, the mounting groove realizes the precise positioning of the signal spring 13, and the tight abutment at both ends ensures the stable conduction of signals and current. Compared with rigid conductive structures, elastic contact can absorb vibration and assembly errors, improve the reliability of conductivity. At the same time, the design of the spring mounting groove allows the signal spring 13 to be integrated into the bracket 11 without taking up extra space, ensuring the compactness of the overall structure.

[0028] Working Principle: Gear Switching and Positioning Principle: The user rotates the circular dial 2 left and right in a circumferential direction at the tail of the flashlight. The circular dial 2 drives the magnet 5 embedded below it to rotate synchronously. When the magnet 5 rotates to the position corresponding to the Hall sensor 8 above the circuit board 9, the Hall sensor 8 detects the magnetic field signal and transmits it to the control circuit to realize the corresponding gear switching. At the same time, the spring 7 on the partition of the tail cover 4 provides elastic force, pushing the steel ball 6 into the spherical groove on the circular dial 2. The design of three positioning grooves evenly dividing the included angle of the Hall sensor 8 achieves precise gear positioning. The cooperation between the steel ball 6 and the spherical groove provides the user with clear tactile feedback, clearly indicating the gear switching status. In addition, the large groove on the circular dial 2 cooperates with the limiting protrusion of the tail cover 4 to limit the maximum rotation range of the circular dial 2, avoiding excessive rotation that could damage the components.

[0029] The principle of the intermediate switch control: Pressing the switch cap 1 at the center of the tail causes the switch cap 1 to move the switch 10 below. The switch 10 controls the opening and closing of the circuit, realizing the power on / off or quick switching of specific gears. It complements the gear switching function of the circular dial 2, enriching the operation modes.

[0030] Circuit conduction principle: The circuit loop is connected to the circuit board 9 through the negative spring 12. The negative spring 12 serves as one of the connection ports with the front flashlight and battery, realizing the conduction of the negative power supply. One end of the signal spring 13 abuts against the circuit board 9, and the other end abuts against the bare aluminum conductive surface of the inner wall of the tail 14, conducting the bare aluminum on the tail 14. The bare aluminum conductive surface of the tail 14 serves as another connection port, realizing the circuit connection with the front flashlight and battery. The switch 10 is connected in series in the circuit loop. Its on / off state controls the power supply of the entire circuit, ensuring the normal realization of the lighting function.

[0031] It should be noted that the specific model and specifications in this solution need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0032] The power supply and its principle in this solution are clear to those skilled in the art, and will not be described in detail here.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tail switch for a flashlight, characterized in that, include The cylinder tail has a tail cap threadedly connected to its upper part. A switch is installed inside the tail cap. A locking plate is installed on the outside of the switch to limit its movement. The locking plate abuts against the switch limit and is externally connected to the tail cap limit. A circular dial is rotatably arranged between the locking plate and the tail cap. A circuit board is connected below the circular dial and the switch and is installed inside the tail cap.

2. The flashlight tail switch as described in claim 1, characterized in that: Both the tail cap and the cylindrical tail are cylindrical. The inner walls of both ends of the cylindrical tail are threaded, and the bottom outer wall of the tail cap is threaded. The tail cap is threaded to the top of the cylindrical tail.

3. A flashlight tail switch as described in claim 1, characterized in that: A switch cap is provided above the switch, and the locking piece is sleeved on the outside of the switch cap. A stepped edge is provided at the bottom of the switch cap, and the stepped edge abuts against the bottom of the locking piece. The bottom outer ring of the locking piece is threadedly connected to the inside of the tail cap.

4. A flashlight tail switch as described in claim 3, characterized in that: A partition is provided in the middle of the tail cover, and a threaded ring is fixedly connected to the partition. The threaded ring is threadedly connected to the locking plate. The bottom limit of the circular dial is rotatably set on the partition, and the circular dial is located between the threaded ring and the inner wall of the tail cover.

5. A flashlight tail switch as described in claim 4, characterized in that: The circuit board is located below the inner partition of the tail cover, and the circuit board is locked to the inner wall of the tail cover. The switch is installed above the circuit board.

6. A flashlight tail switch as described in claim 5, characterized in that: A Hall sensor is connected to the top of the circuit board, and a magnet is embedded below the circular dial. The magnet is positioned corresponding to the Hall sensor. A groove is formed below the other side of the circular dial on the magnet. A steel ball is placed below the groove, and a spring is placed below the steel ball. The steel ball and the spring are vertically mounted on the partition of the tail cover.

7. A flashlight tail switch as described in claim 5, characterized in that: The negative terminal of the circuit board is connected to a negative terminal spring, which is located directly below the circuit board. A bracket is sleeved on the outside of the negative terminal spring, and the bracket is engaged with the bottom limit of the circuit board.

8. A flashlight tail switch as described in claim 7, characterized in that: A signal spring is installed on the bracket. One end of the signal spring abuts against the circuit board, and the other end of the signal spring abuts against the inner wall of the cylinder tail.

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