CN104676260A - Flashlight - Google Patents

Abstract

A flashlight, the flashlight includes: a lamp tube, the lamp tube is hollow to form a storage cavity, and the front end and the tail end of the lamp tube are both open and connected to the storage cavity; a light source assembly, the light source assembly includes a light source and a fixing plate, and the light source is fixed on the fixing plate; Lens; gas spring, the gas spring is located in the lamp tube and at the rear end of the light source assembly, the piston rod of the gas spring is connected to the fixed plate of the light source assembly to drive the light source assembly to move axially in the storage cavity; the tail cover, which is fixed Connect the tail end of the lamp tube, the gas spring is fixed on the tail cap, the tail cap is used to fix the gas spring in the storage cavity, and there is an adjustment hole on the tail cap; the adjustment button is inserted into the adjustment hole of the tail cap and connected to the gas spring , used to adjust the extension length of the piston rod of the gas spring, thereby adjusting the distance between the light source assembly and the lens. The invention changes the position of the light source assembly through the expansion and contraction of the piston rod of the gas spring, thereby realizing the adjustment of the focal length and changing the position of the illumination.

Description

a flashlight

technical field

The present invention relates to lighting fixtures, in particular to torches.

Background technique

The focus of the light source of the existing torch is generally only fixed, and the focal length cannot be changed. This flashlight with a fixed focal length needs to use the movement of people to achieve the lighting effect. It is very cumbersome to operate, and in the occasion where the operator is inconvenient to move, the flashlight in the prior art is difficult to meet the lighting requirement.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art, and to propose a flashlight, which can adjust the focal length, thereby changing the lighting position.

In order to solve the above technical problems, the present invention proposes a flashlight, which includes: a lamp tube, the lamp tube is hollow to form a storage cavity, and the front end and the tail end of the lamp tube are both open and connected to the storage cavity; the light source Assembly, the light source assembly includes a light source and a fixing plate, the light source is fixed on the fixing plate, the light source opens toward the front end of the lamp tube, and the fixing plate can drive the light source in the accommodating cavity Axial movement; lens, the lens is located in the lamp tube, and is fixed on the front end of the light source assembly to focus the light emitted by the light source assembly; gas spring, the gas spring is located in the lamp tube Inside, and located at the rear end of the light source assembly, the piston rod of the gas spring is connected to the fixing plate of the light source assembly to drive the light source assembly to move axially in the storage cavity; the tail cover is fixed Connect the tail end of the lamp tube, the gas spring is fixed on the tail cap, the tail cap is used to fix the gas spring in the storage cavity, and the tail cap is provided with an adjustment hole; the adjustment button , said gas spring is inserted into and connected to said gas spring through the adjustment hole of said tail cap, so as to adjust the protruding length of the piston rod of the gas spring, thereby adjusting the distance between said light source assembly and said lens.

Preferably, the light source of the light source assembly is an LED.

Preferably, one side of the fixed plate fixes the LED, and the other side of the fixed plate is provided with a cylindrical wall, the cylindrical wall forms a cylindrical groove with the fixed plate, and the piston rod of the gas spring is inserted into the The cylindrical groove is fixedly connected with the fixing plate.

Preferably, the edge of the fixing plate extends backward to form a side wall, and the side wall is used for fixing the light source assembly.

Preferably, the tail cover includes a base and a column wall extending from the base to the same side, the adjustment hole is located on the base, the column wall is provided with internal threads, and the outer wall of the tail end of the lamp tube There are matching external threads on the top, and the tail cap is fixed on the tail end of the lamp tube through threads.

Preferably, there are two installation holes on the base of the tail cover, and two installation slots are opened on the tail of the gas spring, and the screws pass through the installation holes and the installation slots to fix the tail of the gas spring on the tail cover on the base.

Preferably, the adjusting knob is a knob.

Preferably, the torch further includes a gland, the front opening of the lamp tube is provided with external threads, and the gland is provided with matching internal threads, and the gland is screwed onto the front opening of the lamp tube for Compress the lens.

Preferably, the torch further includes a reflective cup, the light source of the light source assembly is located at the bottom of the reflective cup, and the opening of the reflective cup corresponds to the lens.

Preferably, the storage cavity includes a front storage cavity and a rear storage cavity, the diameter of the front storage cavity is larger than that of the rear storage cavity, the light source assembly is located in the front storage cavity, and the gas spring is located in the rear storage cavity.

Compared with the prior art, the present invention has the following beneficial effects: the present invention changes the position of the light source assembly through the expansion and contraction of the piston rod of the gas spring, thereby realizing the adjustment of the focal length and changing the position of the illumination.

Description of drawings

Figure 1 is an exploded view of the flashlight of the present invention.

Fig. 2 is a cross-sectional view of the flashlight of the present invention.

Wherein, the reference signs are explained as follows: lamp tube 1, storage cavity 11, rear storage cavity 12, light source assembly 2, light source 21, fixing plate 22, cylindrical wall 23, side wall 24, gas spring 3, installation groove 31, tail cover 4. Base 41 , column wall 42 , adjustment hole 411 , installation hole 412 , adjustment knob 5 , lens 6 , gland 7 , reflective cup 8 , and screw 9 .

Detailed ways

In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 , the present invention provides a flashlight, which includes a lamp tube 1 , a light source assembly 2 , a gas spring 3 , a tail cap 4 , an adjustment knob 5 , a lens 6 , a gland 7 and a reflector 8 .

The lamp tube 1 is hollow to form a storage cavity, and the front end and the tail end of the lamp tube 1 are both open and communicated with the storage cavity. In this embodiment, the storage cavity includes a front storage cavity 11 and a rear storage cavity 12, the diameter of the front storage cavity 11 is larger than that of the rear storage cavity 12, the light source assembly 2 is located in the front storage cavity 11, and the gas spring 3 is located in the rear storage cavity 12. In other embodiments, the diameters of the front and rear accommodating cavities can also be changed according to actual installation methods or components. The rear accommodating cavity 12 can be larger than the front accommodating cavity 11, or they can be the same.

The light source assembly 2, the light source assembly 2 includes a light source 21 and a fixing plate 22, the light source 21 is fixed on the fixing plate 22, the light source 21 opens toward the front end of the lamp tube 1, and the fixing plate 22 can Driving the light source 21 to move in the axial direction in the accommodating cavity. The function of the fixing plate 22 is to facilitate the fixing of the light source 21 in the lamp tube 1 . In this embodiment, the light source 21 is an LED. In other embodiments, the type of light source 21 can vary according to lighting needs, such as small incandescent bulbs and the like. In this embodiment, one side of the fixing plate 22 fixes the LED, and the other side of the fixing plate 22 is provided with a cylindrical wall 23, and the cylindrical wall 23 forms a cylindrical groove with the fixing plate 22, The piston rod of the gas spring 3 is inserted into the cylindrical groove and fixedly connected with the fixing plate 22 . The function of the cylindrical wall 23 is to facilitate the connection of the piston rod of the gas spring 3 with the fixed plate. In other embodiments, the cylindrical wall 23 may not be provided as required, or other methods may be adopted, such as slotting on the fixing plate 22 , and the piston rod of the gas spring 3 is inserted into the groove to connect to the fixing plate 22 . In this embodiment, the edge of the fixing plate 22 extends backward to form a side wall 24 , and the side wall 24 is used for fixing the light source assembly 2 . The side wall 24 is to facilitate the fixing of the light source assembly 2 in the lamp tube 1 . Compared with the fixing by the fixing plate 22 alone, the side wall 24 has a sufficient thickness in the axial direction so it can ensure more stability.

Gas spring 3, the gas spring 3 is located in the lamp tube 1 and at the rear end of the light source assembly 2, the piston rod of the gas spring 3 is connected to the fixed plate 22 of the light source assembly 2 to drive The light source assembly 2 moves axially in the receiving cavity. The function of the gas spring 3 is to adjust the focus of the light source 21 by changing the position of the light source assembly 2 .

Tail cap 4, which is fixedly connected to the tail end of the lamp tube 1, the gas spring 3 is fixed on the tail cap 4, and the tail cap 4 is used to fix the gas spring 3 in the storage cavity. The tail cover 4 is provided with an adjustment hole 411 . In this embodiment, the tail cap 4 includes a base 41 and a column wall 42 extending from the base 41 to the same side, the adjustment hole 411 is located on the base 41, and the column wall 42 is provided with internal threads , the outer wall of the tail end of the lamp tube 1 is provided with matching external threads, and the tail cap 4 is fixed on the tail end of the lamp tube 1 through threads. The function of the tail cover 4 is to fix the gas spring 3 from the rear, so as to prevent the gas spring 3 from being pushed out by the reaction force when applying force to the light source assembly 2 . In other embodiments, the rear cover 4 may also be fixed in various ways, for example, by screwing, bonding or buckling. In this embodiment, two installation holes 412 are opened on the base 41 of the tail cover 4, and two installation grooves 31 are opened at the tail of the gas spring 3, and the screws 9 pass through the installation holes 412 and the installation grooves 31. Fix the tail of the gas spring 3 on the base 41 of the tail cover 4 . In other embodiments, other fixing methods may also be used, for example, by bonding or slotting.

The adjustment button 5 is inserted into the adjustment hole 411 of the tail cover 4 and connected to the gas spring 3 to adjust the extension length of the piston rod of the gas spring 3, thereby adjusting the light source assembly 2 and the lens 6 spacing between. In this embodiment, the adjustment knob 5 is a knob, the knob is screwed in to make the piston rod of the gas spring 3 stretch out, and the knob is turned out to make the piston rod of the gas spring 3 contract. In other embodiments, the adjustment knob 5 can use other methods Adjust the gas spring 3, such as a push button or a pull rod, etc.

The lens 6 is located inside the lamp tube 1 and at the front end of the light source assembly 2 for focusing the light emitted by the light source assembly 2 .

Gland 7, the front opening of the lamp tube 1 is provided with external threads, and the gland 7 is provided with matching internal threads, and the gland 7 is screwed on the front opening of the lamp tube 1 for pressing Tighten the lens 6.

The reflective cup 8 , the light source 21 of the light source assembly 2 is located at the bottom of the reflective cup 8 , and the opening of the reflective cup 8 corresponds to the lens 6 . The function of the reflector 8 is to converge the light emitted by the light source 21 into one direction.

The working principle of the present invention will be described in detail below by taking this embodiment as an example.

When the torch is working normally, the light source 21 of the light source assembly 2 emits light, and the light is collected through the reflective cup 8 and emitted through the lens 6 .

When the focal length needs to be adjusted, the adjustment knob 5 is screwed in or out, thereby causing the piston rod of the gas spring 3 to stretch out or retract, so that the position of the light source 21 of the light source assembly 2 relative to the lens 6 changes, so that the focal length changes, thereby Change the position of the lighting.

To sum up, the present invention changes the position of the light source assembly through the expansion and contraction of the piston rod of the gas spring, thereby realizing the adjustment of the focal length and changing the position of the lighting.

The above descriptions are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. All equivalent structural changes made by using the description and drawings of the present invention are included in the protection scope of the present invention.

Claims (10)

1. A torch, characterized in that the torch comprises: A lamp tube, the lamp tube is hollow to form a storage cavity, and the front end and the tail end of the lamp tube are both open and communicated with the storage cavity; A light source assembly, the light source assembly includes a light source and a fixing plate, the light source is fixed on the fixing plate, the light source opens toward the front end of the lamp tube, and the fixing plate can drive the light source in the accommodating cavity inner axial movement; a lens, the lens is located in the lamp tube and fixed on the front end of the light source assembly to focus the light emitted by the light source assembly; A gas spring, the gas spring is located in the lamp tube and at the rear end of the light source assembly, the piston rod of the gas spring is connected to the fixing plate of the light source assembly to drive the light source assembly in the The storage chamber moves along the axial direction; A tail cap, which is fixedly connected to the tail end of the lamp tube, the gas spring is fixed on the tail cap, the tail cap is used to fix the gas spring in the storage cavity, and the tail cap is provided with adjustment hole; The adjustment knob is inserted into the adjustment hole of the tail cover and connected to the gas spring, and is used to adjust the extension length of the piston rod of the gas spring, thereby adjusting the distance between the light source assembly and the lens. 2. The torch according to claim 1, wherein the light source of the light source assembly is an LED. 3. The torch according to claim 2, wherein the LED is fixed on one side of the fixing plate, and a cylindrical wall is provided on the other side of the fixing plate, and the cylindrical wall and the fixing plate form a A cylindrical groove, the piston rod of the gas spring is inserted into the cylindrical groove and fixedly connected with the fixing plate. 4. The torch according to claim 3, wherein the edge of the fixing plate extends backward to form a side wall, and the side wall is used for fixing the light source assembly. 5. The torch according to claim 1, wherein the tail cap comprises a base and a column wall extending from the base to the same side, the adjustment hole is located on the base, and the column wall is An internal thread is provided, and a matching external thread is provided on the outer wall of the tail end of the lamp tube, and the tail cap is fixed on the tail end of the lamp tube through threads. 6. The torch according to claim 4, wherein two mounting holes are opened on the base of the tail cover, and two mounting grooves are opened on the tail of the gas spring, and screws pass through the mounting holes and the mounting holes. A slot secures the tail of the gas spring to the base of the tail cap. 7. The flashlight according to claim 1, characterized in that, the adjustment knob is a knob. 8. The flashlight according to claim 1, characterized in that, the flashlight further comprises a gland, the front opening of the lamp tube is provided with external threads, and the gland is provided with matching internal threads, so that The gland is screwed onto the front opening of the lamp tube to compress the lens. 9 . The flashlight according to claim 8 , further comprising a reflective cup, the light source of the light source assembly is located at the bottom of the reflective cup, and the opening of the reflective cup corresponds to the lens. 10. The flashlight according to claim 1, wherein the storage cavity comprises a front storage cavity and a rear storage cavity, the diameter of the front storage cavity is larger than that of the rear storage cavity, and the light source assembly is located in the front storage cavity , the gas spring is located in the rear accommodation chamber.