A flashlight with elastic pre-pressing screwing locking structure

Abstract

The utility model belongs to lighting technical field, concretely relates to a flashlight of elastic prepress screw -up locking structure, include: casing, be provided with inner chamber in casing, power module, power module sets up in the inner chamber of casing, head locking portion, head locking portion sets up one end of casing, elastic positioning portion, elastic positioning portion sets up between casing and head locking portion, one end with casing axial positioning, the other end links with head locking portion, when installing, elastic positioning portion and head locking portion keep relative static, through the positioning of elastic positioning portion, make head locking portion correspond in the preset installation position of casing, rotate head locking portion and drive elastic positioning portion synchronous rotation, make the end of casing and head locking portion mutual clamping, complete overall assembly. The utility model has solved the problem that the tooth surface of the existing flashlight is easy to fall off due to thread connection structure and is easy to shift due to rigid clamping structure, and improves the reliability of use.

Description

Technical Field

[0001] This utility model belongs to the field of lighting technology, specifically relating to a flashlight with an elastic pre-compression screw-locking structure. Background Technology

[0002] In various scenarios such as daily lighting, outdoor work, and night cycling, the flashlight, as a core lighting tool that combines portability and practicality, directly determines the user experience and the reliability of the tool by the stability of the connection between the head and the shell and the ease of assembly.

[0003] Currently, flashlights mainly use two types of connection schemes. One is a threaded engagement connection, which uses external threads machined at the end of the shell and internal threads machined on the inner wall of the head, relying on the meshing of the thread surfaces to achieve fixation; the other scheme uses a single rigid snap-fit ​​structure, which uses a protrusion on the outer wall of the shell and a slot on the inner wall of the head, relying on axial insertion and snap-fit ​​to achieve fixation between the two.

[0004] While both methods allow for the overall assembly of the flashlight, they have significant drawbacks. Firstly, the stability of threaded connections relies entirely on the friction of the threaded surfaces. Therefore, when the threads wear down, the friction decreases dramatically, causing gaps to gradually appear in the originally tight thread fit, potentially leading to the head completely detaching. Secondly, flashlights using a single rigid snap-fit ​​structure are prone to gaps between the protrusion and the slot when operating in a vibrating environment. This can cause axial movement or circumferential rotation of the head assembly, thus affecting the stability of the illumination. Utility Model Content

[0005] The purpose of this invention is to provide a flashlight with an elastic pre-compression screw-locking structure, which aims to solve the problems of easy wear and detachment of the threaded connection structure and easy movement of the rigid snap-fit ​​structure under vibration in existing flashlights.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flashlight with an elastic preload screw-on locking structure includes:

[0008] A housing, wherein an inner cavity is provided within the housing;

[0009] A power module, wherein the power module is disposed in the inner cavity of the housing;

[0010] A head locking part is disposed at one end of the housing;

[0011] An elastic positioning part is disposed between the housing and the head locking part, with one end axially positioned with the housing and the other end connected to the head locking part;

[0012] During installation, the elastic positioning part and the head locking part remain relatively stationary. The head locking part is positioned by the elastic positioning part so that it corresponds to the preset installation position of the housing. Rotating the head locking part drives the elastic positioning part to rotate synchronously, so that the end of the housing and the head locking part are engaged with each other, completing the overall assembly.

[0013] Further, the housing includes:

[0014] The connecting end is disposed at the end of the housing near the head locking part and is in contact with the inner wall of the head locking part;

[0015] A limiting block is provided on the outer wall of the connecting end, and the limiting block is engaged with the inner wall of the head locking part at the corresponding position.

[0016] The second positioning hole is provided on the side of the connecting end and is used to accommodate the elastic positioning part.

[0017] Furthermore, the elastic positioning part includes:

[0018] The mounting post has a receiving cavity inside, and the receiving cavity is connected to the outside through one end of the mounting post, while the other end of the mounting post is connected to the head locking part.

[0019] A spring, wherein the spring is disposed within a receiving cavity of the mounting post;

[0020] A positioning ball, one side of which is connected to a spring, and the opposite side is disposed in a second positioning hole.

[0021] Furthermore, the head locking part includes:

[0022] The main body is provided with a receiving cavity, and the end of the main body is provided with a first positioning hole that is opposite to the position of the second positioning hole;

[0023] A limiting groove is provided on the inner wall of the main body receiving cavity, and its position corresponds to the position of the limiting block.

[0024] Furthermore, the sidewalls of the housing and the end away from the head locking part are provided with receiving holes for accommodating magnets.

[0025] Furthermore, it also includes:

[0026] A lampshade, wherein the lampshade is disposed between the power module and the head locking part;

[0027] A glass lens is housed inside the lampshade, and the central axis of the glass lens coincides with the central axis of the lampshade.

[0028] Furthermore, the outer wall of the housing is provided with a mounting hole opposite to the charging port of the power module, and the mounting hole of the housing accommodates a charging port protective plug.

[0029] Furthermore, the outer wall of the housing is provided with several through holes, and a protective plate and a button are respectively installed inside the through holes. The button is opposite to the power switch of the power module.

[0030] Furthermore, the protective panel is made of acrylic material.

[0031] Furthermore, the magnet is a rubidium magnet.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] This invention achieves overall installation by incorporating a power module within the housing and connecting the head locking part to the housing using a flexible positioning part. Specifically, the flexible positioning part is positioned between the housing and the head locking part, with one end axially positioned with the housing and the other end connected to the head locking part. During installation, the flexible positioning part aligns the head locking part with a preset installation position. Then, by rotating the head locking part, the flexible positioning part rotates synchronously, causing the end of the housing to engage with the head locking part, completing the overall assembly. This structure overcomes the problems of easy wear and detachment caused by threaded connections and rigid snap-fits in existing flashlights. It ensures a tight fit between the head locking part and the housing's engagement surface, mitigating external forces such as vibration and impact during use and improving reliability. Attached Figure Description

[0034] Figure 1 This is an exploded view of the present invention;

[0035] Figure 2 This is a partial assembly diagram of the present utility model;

[0036] Figure 3 This is a front view of the present invention;

[0037] Figure 4 This is a diagram of the head locking part of this utility model;

[0038] Figure 5 This is a diagram of the elastic positioning part of this utility model.

[0039] In the diagram: 1. Head locking part; 100. Limiting groove; 110. First positioning hole; 2. Elastic positioning part; 200. Mounting post; 210. Spring; 220. Positioning ball; 3. Glass lens; 4. Lampshade; 5. Power module; 6. Housing; 600. Second positioning hole; 610. Hanging rope hole; 620. Connecting end; 630. Limiting block; 7. Protective plate; 8. Button; 9. Magnet; 10. Charging port protective plug. Detailed Implementation

[0040] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0041] like Figures 1-5 In this embodiment, it includes: a head locking part 1, an elastic positioning part 2, a glass lens 3, a lampshade 4, a power module 5, a housing 6, a protective plate 7, a button 8, a magnet 9, and a charging port protective plug 10.

[0042] The housing 6 has an inner cavity, and the power module 5 is located in the inner cavity of the housing 6.

[0043] It should be noted that the housing 6 includes: a connecting end 620 and a limiting block 630;

[0044] Connection end 620: It is provided at the end of the housing 6 near the head locking part 1 and is in contact with the inner wall of the head locking part 1;

[0045] Limiting block 630: It is provided on the outer wall of the connecting end 620, and the limiting block 630 is engaged with the inner wall of the head locking part 1 at the corresponding position.

[0046] Specifically, the limiting blocks 630 are distributed circumferentially along the outer wall of the connecting end 620, and an inclined guide surface is provided on the side facing the head locking part 1; correspondingly, the inner wall of the head locking part 1 is provided with a limiting groove 100 that is adapted to the limiting blocks 630, and the end of the limiting groove 100 is provided with an inclined surface structure that cooperates with the guide surface.

[0047] When the head locking part 1 is rotated, the limiting groove 100 on its inner wall contacts the guide surface of the limiting block 630 through the inclined surface. As the rotation angle increases, the inclined surfaces of the two press against each other, forcing the elastic positioning part 2 to undergo elastic deformation to provide buffering, until the limiting block 630 is completely inserted into the positioning section of the limiting groove 100. At this time, the head locking part 1 and the housing 6 achieve axial locking through the circumferential engagement of the limiting block 630 and the limiting groove 100. At the same time, the rebound force of the elastic positioning part 2 keeps the two in close contact to prevent loosening.

[0048] This structural design, through the precise cooperation between the limiting block 630 and the limiting groove 100, transforms the rotational movement of the head locking part into an axial locking action. Combined with the buffering and pre-tightening effect of the elastic positioning part 2, it not only ensures the convenience of assembly but also improves the stability of the connection.

[0049] The head locking part 1 is located at one end of the housing 6;

[0050] It should be noted that the head locking part 1 includes: a main body and a limiting groove 100;

[0051] Main body: It is provided with a receiving cavity, and the end of the main body is provided with a first positioning hole 110 that is opposite to the position of the second positioning hole 600;

[0052] Limiting groove 100: It is set on the inner wall of the receiving cavity of the main body 1, and its position corresponds to the position of the limiting block 630.

[0053] Specifically, the head locking part 1 is assembled to one end of the housing 6 in a "sleeving fit" manner. Its main body is a cylindrical structure that adapts to the contour of the end of the housing 6. The inner diameter of the internal receiving cavity matches the outer diameter of the connecting end 620 on the side of the housing 6 near the head locking part 1. During assembly, the connecting end 620 can be inserted into the receiving cavity to form a radial fit relationship between the two, so as to avoid radial displacement or shaking of the head locking part 1 after assembly.

[0054] The first positioning hole 110 at the end of the main body is positioned with the elastic positioning part 2 so that it is coaxially aligned with the second positioning hole 600;

[0055] The limiting groove 100 is a recessed structure extending circumferentially on the inner wall of the main receiving cavity. Its length, depth, and opening shape are all adapted to the limiting block 630 on the outer wall of the connecting end 620 of the housing 6. The limiting groove 100 is divided into two parts: an inlet section and a locking section. The inlet section extends obliquely along the inner wall of the receiving cavity, and its opening is designed to be tapered, which facilitates the smooth sliding of the limiting block 630 during assembly. The locking section is the straight end of the limiting groove 100. When the head locking part 1 is rotated to the assembly position, the limiting block 630 is just locked into the locking section. Through the axial limiting effect of the limiting block 630 and the locking section, the head locking part 1 is prevented from disengaging along the axis of the housing 6. At the same time, with the pre-tightening force of the elastic positioning part 2, it is ensured that the limiting block 630 and the limiting groove 100 always remain in close contact.

[0056] The elastic positioning part 2 includes: a mounting post 200, a spring 210, and a positioning ball 220;

[0057] Mounting post 200: It has an internal receiving cavity, and the receiving cavity is connected to the outside through one end of the mounting post 200, and the other end of the mounting post 200 is connected to the first positioning hole 110;

[0058] Spring 210: disposed within the receiving cavity of mounting post 200;

[0059] Positioning ball 220: One side is connected to spring 210, and the opposite side is set in the second positioning hole 600; specifically

[0060] During assembly: Align the limiting groove 100 of the head locking part 1 with the corresponding limiting block 630 of the head of the housing 6, and insert it to the bottom along the axial direction of the housing 6; during the insertion process, the positioning ball 220 is squeezed by the inner wall of the hole after being inserted into the second positioning hole 600; then, rotate the head locking part 1 to move the limiting block 630 towards the locking section of the limiting groove 100 until it slides to the end of the groove; when it is rotated to the position, the positioning ball 220 pops out under the rebound force of the spring 210, realizing the circumferential positioning of the head locking part 1 and the housing 6; at the same time, the limiting block 630 of the housing 6 and the end engaging surface of the limiting groove 100 form an axial limit to prevent the head locking part 1 from disengaging along the axis, thus completing the overall assembly;

[0061] During disassembly: Rotate the head locking part 1 in the opposite direction, and the inner wall of the second positioning hole 600 will press the positioning ball 220 to compress the spring 210. Continue to rotate until the limiting block 630 is freed from the constraint of the limiting groove 100. Then, pull out the head locking part 1 along the axial direction to complete the separation of the head locking part 1 and the housing 6.

[0062] The lampshade 4 is positioned between the power module 5 and the head locking part 1;

[0063] The glass lens 3 is housed inside the lampshade 4, and the central axis of the glass lens 3 coincides with the central axis of the lampshade 4.

[0064] Specifically, the lampshade 4 is a cylindrical structure with openings at both ends. It is coaxially assembled in the inner cavity of the housing 6. One end of the lampshade 4 is positioned against the front end of the power module 5 near the side where the light is emitted, and the other end extends into the receiving cavity of the head locking part 1, forming an axial connection structure of "power module-lampshade-head locking part". This structure is used to limit the installation position of the glass lens 3 and to focus and guide the light.

[0065] The glass lens 3 is embedded in the limiting structure inside the lampshade 4, with its edge tightly fitting the end face of the limiting structure to ensure that the glass lens 3 is stably fixed and does not move axially. At the same time, through the coaxiality design of the limiting structure inside the lampshade 4, the central axis of the glass lens 3 is completely coincident with the central axis of the lampshade 4, thereby ensuring that the light emitted from the light-emitting element of the power module 5 can be refracted along the coaxial direction by the glass lens 3, avoiding light divergence or spot shift caused by axial offset.

[0066] The side wall of the housing 6 and the end away from the head locking part 1 are provided with receiving holes for accommodating the magnet 9;

[0067] Specifically, the side walls of the housing 6 and the ends away from the head locking part 1 are provided with recessed holes: the recessed holes on the side walls are distributed circumferentially around the housing 6, and the recessed holes at the ends are coaxially set with the axis of the housing 6. The diameter and depth of the two types of recessed holes are precisely matched with the outer dimensions of the magnet 9. The magnet 9 is fixed in the recessed holes by interference fit, bonding or embedded snap-fit, and after fixing, the outer surface of the magnet 9 does not protrude from the outer contour surface of the housing 6, which not only prevents the magnet from falling off due to bumps during use, but also does not affect the feel of gripping the hand.

[0068] By integrating magnets 9 into the housing 6, it can replace the external fixing accessories such as clips and screws that existing flashlights rely on, and flexibly adapt to various usage scenarios: for example, during routine maintenance, the flashlight can be directly attached to the surface of metal equipment housings, pipes, metal shelves, etc., by means of magnets 9, and can maintain stable illumination without holding it by hand; in emergency lighting scenarios, it can be quickly attached to metal door and window frames, radiators, etc., to achieve multi-angle fixed lighting; in outdoor scenarios, it can also be attached to the metal frame of tents, metal buckles of backpacks, etc., freeing up hands to complete other operations;

[0069] The outer wall of the housing 6 is also provided with a mounting hole that is opposite to the charging port of the power module 5. The mounting hole of the housing 6 is used to accommodate a charging port protective plug 10.

[0070] The outer wall of the housing 6 is also provided with two through holes, and a protective plate 7 and a button 8 are respectively installed inside the through holes. The button 8 is opposite to the power switch of the power module 5.

[0071] Specifically, the mounting holes on the outer wall of the housing 6 are coaxially aligned with the charging port of the power module 5. The diameter of the mounting holes is slightly larger than the outer diameter of the charging port, and the hole wall is provided with an annular groove. The charging port protective plug 10 is made of elastic material such as silicone or rubber, and its shape is adapted to the mounting holes. During assembly, the protective plug 10 is embedded in the mounting holes, and the elastic material of the protective plug 10 can fit tightly against the inner wall of the mounting holes to form a sealing structure.

[0072] The protective plate 7 is matched with the corresponding through hole size, which can isolate external dust and play a protective role;

[0073] Button 8 triggers the power switch via the push rod, enabling the flashlight to be turned on and off, and the flashlight speed to be adjusted. When button 8 is released, it rebounds through its own reset structure, remaining flush with or slightly protruding from the outer wall of the housing 6, which does not affect the grip and ensures convenient operation.

[0074] In this embodiment, the housing 6 is also provided with a lanyard hole 610.

[0075] In this embodiment, the protective plate 7 is made of acrylic material.

[0076] In this embodiment, magnet 9 is a rubidium magnet.

[0077] In this embodiment, the overall dimensions are 15.6×15.6×60mm, and the overall weight is 31g.

[0078] In this embodiment, the charging port is a Type-C charging port.

[0079] In this embodiment, the flashlight has two working modes: main light and side light. In the main light mode, four different brightness levels can be adjusted. In the side light mode, there are six levels: white light, white light flashing, ultraviolet banknote detection, red light, red light flashing, and red and blue strobe emergency.

[0080] It should be noted that the aforementioned existing technologies will not be elaborated upon here.

[0081] Assembly process:

[0082] First, embed the glass lens 3 into the limiting structure inside the lampshade 4, ensuring that the edge of the glass lens 3 fits tightly with the end face of the limiting structure and that their central axes are completely coincident; after completion, store the lampshade 4 with the pre-installed glass lens 3 for later use.

[0083] Next, slide the power module 5 into the inner cavity of the housing 6 along the guide rail groove; then, place one end of the lampshade 4 with the pre-installed glass lens 3 against the front end of the power module 5, and extend the other end towards the opening end of the housing 6 near the head locking part 1, so that the lampshade 4 is coaxially assembled with the inner cavity of the housing 6.

[0084] Then, the protective plate 7, button 8, charging port protective plug 10 and neodymium magnet 9 are thus embedded into the holes provided on the surface of the housing 6;

[0085] Finally, align the guide section of the limiting groove 100 on the inner wall of the head locking part 1 with the limiting block 630 on the outer wall of the connecting end 620 of the housing 6, and fit the head locking part 1 onto the connecting end 620 along the axial direction of the housing 6 until it is inserted to the bottom; at this time, the outer wall of the connecting end 620 is radially fitted with the inner wall of the receiving cavity of the head locking part 1, and at the same time, the positioning ball 220 of the elastic positioning part 2 is squeezed by the outer wall of the housing 6, compressing the spring 210 and keeping it in a flat state; maintain a slight axial pressure on the head locking part 1, and rotate it counterclockwise by about 20°; during the rotation, the limiting block 630 The inclined guide surface and the inclined surface of the limiting groove 100 press against each other, forcing the elastic positioning part 2 to deform slightly to buffer the pressure. The limiting block 630 gradually slides along the guide section of the limiting groove 100 towards the locking section. When the head locking part 1 is rotated into place, the spring 210 releases its rebound force, pushing the positioning ball 220 to pop out and lock into the second positioning hole 600 of the housing 6, realizing the circumferential positioning of the head locking part 1 and the housing 6. At the same time, the limiting block 630 engages with the inner wall of the locking section of the limiting groove 100 to form an axial limit, preventing the head locking part 1 from disengaging along the axis. The overall installation is completed.

[0086] Disassembly process:

[0087] First, the head locking part 1 is rotated clockwise by about 20°. During the rotation, the inner wall of the second positioning hole 600 of the housing 6 presses the positioning ball 220, causing the positioning ball 220 to compress the spring 210 and disengage from the second positioning hole 600, thus releasing the circumferential positioning. Continue rotating until the limiting block 630 slides out of the locking section of the limiting groove 100 and enters the guide section.

[0088] Then, while keeping the head locking part 1 in a rotating state, pull the head locking part 1 outward along the axis of the housing 6 so that the limiting block 630 is completely disengaged from the limiting groove 100, the head locking part 1 is completely separated from the connecting end 620 of the housing 6, and the elastic positioning part 2 is taken out together with the head locking part 1.

[0089] Finally, disassemble the remaining parts one by one, and the disassembly is complete.

[0090] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flashlight with an elastic pre-compression screw-locking structure, characterized in that, include: A housing (6) having an inner cavity inside; A power module (5) is disposed in the inner cavity of the housing (6); A head locking part (1) is provided at one end of the housing (6); The elastic positioning part (2) is disposed between the housing (6) and the head locking part (1), with one end axially positioned with the housing (6) and the other end connected to the head locking part (1); During installation, the elastic positioning part (2) and the head locking part (1) remain relatively stationary. The head locking part (1) is positioned by the elastic positioning part (2) so that it corresponds to the preset installation position of the housing (6). Rotating the head locking part (1) drives the elastic positioning part (2) to rotate synchronously, so that the end of the housing (6) and the head locking part (1) are engaged with each other to complete the overall assembly.

2. The flashlight with an elastic pre-compression screw-locking structure according to claim 1, characterized in that, The housing (6) includes: The connecting end (620) is disposed at the end of the housing (6) near the head locking part (1) and is in contact with the inner wall of the head locking part (1); A limiting block (630) is provided on the outer wall of the connecting end (620), and the limiting block (630) is engaged with the inner wall of the head locking part (1) at the corresponding position. The second positioning hole (600) is provided on the side of the connecting end (620) and is used to accommodate the elastic positioning part (2).

3. The flashlight with an elastic pre-compression screw-locking structure according to claim 2, characterized in that, The elastic positioning part (2) includes: Mounting post (200), the mounting post (200) has a receiving cavity inside, and the receiving cavity is connected to the outside through one end of the mounting post (200), and the other end of the mounting post (200) is connected to the head locking part (1); A spring (210) is disposed within a receiving cavity of a mounting post (200); A positioning ball (220) is provided, one side of which is connected to a spring (210), and the other side is disposed in a second positioning hole (600).

4. The flashlight with an elastic pre-compression screw-locking structure according to claim 3, characterized in that, The head locking part (1) includes: The main body is provided with a receiving cavity, and the end of the main body is provided with a first positioning hole (110) opposite to the position of the second positioning hole (600); A limiting groove (100) is provided on the inner wall of the main body receiving cavity, and its position corresponds to the position of the limiting block (630).

5. The flashlight with an elastic pre-compression screw-locking structure according to claim 1, characterized in that, The sidewall of the housing (6) and the end away from the head locking part (1) are provided with receiving holes for accommodating magnets (9).

6. The flashlight with an elastic pre-compression screw-locking structure according to claim 5, characterized in that, Also includes: A lampshade (4) is disposed between the power module (5) and the head locking part (1); A glass lens (3) is housed inside a lampshade (4), and the central axis of the glass lens (3) coincides with the central axis of the lampshade (4).

7. The flashlight with an elastic pre-compression screw-locking structure according to claim 6, characterized in that, The outer wall of the housing (6) is also provided with a mounting hole opposite to the charging port of the power module (5), and the mounting hole of the housing (6) is filled with a charging port protective plug (10).

8. The flashlight with an elastic pre-compression screw-locking structure according to claim 7, characterized in that, The outer wall of the housing (6) is also provided with several through holes, and a protective plate (7) and a button (8) are respectively provided inside the through holes. The button (8) is opposite to the power switch of the power module (5).

9. The flashlight with an elastic pre-compression screw-locking structure according to claim 8, characterized in that, The protective plate (7) is made of acrylic material.

10. The flashlight with an elastic pre-compression screw-locking structure according to claim 5, characterized in that, The magnet (9) is a rubidium magnet.

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