CN212029202U - Focusing flashlight - Google Patents

Abstract

The utility model relates to a focusing flashlight, include: a barrel; the lamp holder is connected to the front end of the barrel and is provided with a luminous body; the rotary adjusting head is connected to the front end of the lamp holder, and a first focusing lens which can move back and forth relative to the luminous body is arranged on the rotary adjusting head; the first focusing lens is at least two, the second focusing lenses are arranged along the axial direction of the rotary adjusting head at intervals and can be movably arranged on the rotary adjusting head back and forth, and at least one second focusing lens which keeps a fixed distance from the luminous body is further arranged at the front end of the luminous body. The focusing flashlight can effectively reduce light loss in the focusing process of the flashlight.

Description

Focusing flashlight

Technical Field

The utility model relates to a flashlight technical field especially relates to a focusing flashlight.

Background

Flashlights, as a temporary lighting tool, are typically capable of varying the distance of illumination and the amount of light that is focused by adjusting the focal length. The existing zoom flashlight is characterized in that a lens is added in front of a light source, the direction of light rays emitted by a bulb is changed by changing the distance between the lens and the bulb, and then the adjustment effects of long-distance illumination (light condensation and high brightness) and short-distance illumination (floodlight and large area) are realized. However, such flashlights lose light when the focusing lens is moved away from the light emitter during focusing, which reduces the brightness.

In order to solve the above technical problem, chinese utility model patent with application number CN201220092067.9(CN202532197U) discloses "focusing flashlight", which includes a barrel, a lamp cap rotatably disposed on the barrel, a first focusing lens fixed on the head of the lamp cap, a light emitting body fixed on the barrel inside the lamp cap, a second focusing lens disposed at the front end of the light emitting body, and a distance between the second focusing lens and the light emitting body is kept fixed. The second focusing lens is arranged at a fixed distance from the luminous body, and the distance between the first focusing lens and the second focusing lens is adjusted, so that the light emitted by the luminous body is refracted out as completely as possible, and the finally emitted light is strengthened.

However, the flashlight in the above patent still has certain deficiencies in the actual use process, and although the second focusing lens is arranged to keep a fixed distance from the light emitter, the focusing distance for arranging one second focusing lens is limited, and in the rotating focusing process of the flashlight, as the first focusing lens fixed on the head of the lamp holder is far away from the light emitter, a certain light loss exists, which is difficult to avoid, so how to reduce the light loss in the focusing process of the flashlight to the maximum extent becomes a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a can effectively reduce the focusing flashlight of the light loss of flashlight focusing in-process.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a focusing flashlight, comprising:

a barrel;

the lamp holder is connected to the front end of the barrel and is provided with a luminous body;

the rotary adjusting head is connected to the front end of the lamp holder, and a first focusing lens which can move back and forth relative to the luminous body is arranged on the rotary adjusting head;

the first focusing lens is at least two, the second focusing lenses are arranged along the axial direction of the rotary adjusting head at intervals and can be movably arranged on the rotary adjusting head back and forth, and at least one second focusing lens which keeps a fixed distance from the luminous body is further arranged at the front end of the luminous body.

In order to stably hold the second focusing lens at the front part of the luminous body, the luminous body further comprises a fixed sleeve assembly detachably connected to the lamp holder, and the second focusing lens is arranged on the fixed sleeve assembly.

In order to refract the light generated by the luminous body as much as possible, thereby further reducing the light loss, the second focusing lenses are two, and the two second focusing lenses are arranged along the axial direction of the fixed sleeve component at intervals, wherein the diameter of the second focusing lens close to the luminous body is smaller than that of the second focusing lens relatively far away from the luminous body.

In order to stably fix the two second focusing lenses on the lamp holder, the fixing sleeve assembly comprises a fixing sleeve, a first spacing sleeve and a first pressing sleeve, the fixing sleeve is connected on the lamp holder and is provided with a first annular blocking edge formed by extending inwards in the radial direction at the rear port, the two second focusing lenses are arranged in the fixing sleeve and are separated by the first spacing sleeve correspondingly arranged in the fixing sleeve, and the first pressing sleeve is connected at the front port of the fixing sleeve so as to press the two second focusing lenses backwards on the first annular blocking edge.

In order to further reduce the light loss, the first focusing lenses are provided in two groups, and the two groups of first focusing lenses are respectively arranged at the front part and the rear part of the rotary adjusting head and can be close to or far away from each other when the rotary adjusting head rotates.

In order to enable the front and rear groups of first focusing lenses to be stably close to or far away from each other, the group of first focusing lenses positioned at the front part of the rotary adjusting head is assembled in a first sliding sleeve, and the group of first focusing lenses positioned at the rear part of the rotary adjusting head is assembled in a second sliding sleeve;

the rotary adjustment head includes:

the rear end of the inner cylinder is connected to the lamp holder, a first strip-shaped sliding groove which penetrates through the inner cylinder from inside to outside and extends along the axial direction of the inner cylinder is formed in the front part of the wall of the inner cylinder, and a second strip-shaped sliding groove which penetrates through the inner cylinder from inside to outside and extends along the axial direction of the inner cylinder is formed in the rear part of the wall of the inner cylinder;

the outer cylinder is sleeved outside the inner cylinder and is coaxially arranged with the inner cylinder, the outer cylinder can rotate around the axis of the outer cylinder relative to the inner cylinder, a first spiral chute spirally arranged along the axial direction of the outer cylinder is arranged in the front of the wall of the outer cylinder, so that a first sliding key correspondingly arranged on the outer wall of the first sliding sleeve penetrates through a first strip-shaped chute of the inner cylinder and extends into the first strip-shaped chute, a second spiral chute spirally arranged along the axial direction of the outer cylinder is arranged in the rear of the wall of the outer cylinder, so that a second sliding key correspondingly arranged on the outer wall of the second sliding sleeve penetrates through a second strip-shaped chute of the inner cylinder and extends into the second strip-shaped chute, and the spiral direction of the second spiral chute is opposite to the spiral direction of the first spiral chute;

and the adjusting sleeve is sleeved outside the outer barrel and can drive the outer barrel to rotate.

In order to reasonably arrange all parts of the rotary adjusting head so as to reduce the volume of the flashlight, the inner cylinder comprises a first large hole section positioned at the front part and a first small hole section positioned at the rear part, the first strip-shaped sliding groove is arranged on the first large hole section of the inner cylinder, and the second strip-shaped sliding groove is arranged on the first small hole section of the inner cylinder;

the urceolus is including being located anterior second macropore section and being located the second aperture section at rear portion, the second macropore section with the first macropore section of inner tube corresponds, the second aperture section with the first aperture section of inner tube corresponds, first spiral spout locate on the second aperture section of urceolus, second spiral spout locate on the second macropore section of urceolus.

In order to further improve the stability of the front and back sliding of the two groups of first focusing lenses, two first sliding keys are symmetrically arranged on the outer wall of the first sliding sleeve, and two first strip-shaped sliding grooves and two first spiral sliding grooves are correspondingly arranged;

the second sliding keys are symmetrically arranged on the outer wall of the second sliding sleeve, and the second strip-shaped sliding groove and the second spiral sliding groove are correspondingly provided with two sliding keys.

In order to assemble the corresponding first focusing lens in the first sliding sleeve, the number of the first focusing lenses in the first sliding sleeve is two, the front port of the first sliding sleeve is provided with a second annular retaining edge formed by extending inwards in the radial direction, the two first focusing lenses are arranged from the rear port of the first sliding sleeve and are separated by a second spacer sleeve, and the rear port of the first sliding sleeve is also connected with a second pressing sleeve used for pressing the two first focusing lenses on the second annular retaining edge.

In order to assemble the corresponding second focusing lens in the second sliding sleeve, the first focusing lens in the second sliding sleeve is provided with one first focusing lens, the front port of the second sliding sleeve is provided with a third annular retaining edge formed by extending inwards in the radial direction, the first focusing lens is loaded from the rear port of the second sliding sleeve and is pressed on the third annular retaining edge of the second sliding sleeve through a third pressing sleeve correspondingly connected to the rear port of the second sliding sleeve.

Compared with the prior art, the utility model has the advantages that: the front part of the luminous body of the flashlight is provided with a plurality of focusing lenses, the focusing lenses comprise a second focusing lens which keeps a fixed distance from the luminous body and at least two first focusing lenses which can move back and forth relative to the luminous body, so that in the rotating focusing process of the flashlight, the luminous energy emitted by the luminous body can be refracted out as much as possible, thereby reducing the light loss to the maximum extent and enhancing the illumination intensity.

Drawings

Fig. 1 is a schematic perspective view of a focusing flashlight according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a focusing flashlight of an embodiment of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is an exploded view of a focusing flashlight of an embodiment of the present invention;

FIG. 5 is a schematic perspective view of an outer barrel of a focusing flashlight according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of an inner barrel of a focusing flashlight according to an embodiment of the present invention.

Reference numerals: 10. a barrel; 11. a lamp socket; 110. a light emitter; 111. an annular connecting wall; 12. a front cover; 13. a plane mirror; 20. rotating the adjusting head; 21. an inner barrel; 211. a first bar-shaped chute; 212. a second bar-shaped chute; 213. a first large bore section; 214. a first small hole section; 22. an outer cylinder; 221. a first spiral chute; 222. a second spiral chute; 223. a second large bore section; 224. a second small hole section; 23. an adjusting sleeve; 31. a first focusing lens; 32. a second focusing lens; 40. a fixed sleeve assembly; 41. fixing a sleeve; 410. a first annular ledge; 42. a first spacer sleeve; 43. a first compression sleeve; 50. a first sliding sleeve; 51. a first feather key; 52. a second annular blocking edge; 53. a second spacer sleeve; 54. a second compression sleeve; 60. a second sliding sleeve; 61. a second feather key; 62. a third annular retaining edge; 63. and a third compression sleeve.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1-6, a focusing flashlight includes a barrel 10, a lamp holder 11, a fixing sleeve assembly 40, a rotary adjusting head 20, and a front cover 12. A battery may be installed in the cylinder 10, and a lamp holder 11 is provided at the front end of the cylinder 10. The rotary adjusting head 20 is arranged at the front part of the lamp holder 11, the front cover 12 is connected at the front end of the rotary adjusting head 20, and the plane mirror 13 is arranged between the front cover 12 and the front end surface of the rotary adjusting head 20, so that the first focusing lens 31 arranged in the rotary adjusting head 20 can be protected.

Referring to fig. 2, the lamp socket 11 has a cylindrical shape, and a concave cavity is formed at a front end of the lamp socket 11, and the light emitting body 110 is disposed in the concave cavity.

Referring to fig. 3, the front portion of the light emitting body 110 is further provided with at least one second focusing lens 32, and particularly, the second focusing lens 32 is assembled in the fixing sleeve assembly 40, and each second focusing lens 32 is kept at a fixed distance from the light emitting body 110, so that the light emitted from the light emitting body 110 can be refracted as much as possible.

Referring to fig. 3 and 4, the fixing sleeve assembly 40 of the present embodiment is detachably connected to the lamp socket 11. Specifically, the stationary sleeve assembly 40 includes a stationary sleeve 41, a first spacer sleeve 42, and a first compression sleeve 43. The inner wall of the cavity has a forward extending annular connecting wall 111, the annular connecting wall 111 is disposed on the outer periphery of the light emitting body 110, and the fixing sleeve 41 can be sleeved on the front end periphery of the annular connecting wall 111. The rear end of the fixing sleeve 41 has a first annular retaining edge 410 extending radially inward, and the second focusing lens 32 can be disposed in the fixing sleeve 41, specifically, two second focusing lenses 32 are disposed in the fixing sleeve 41 in this embodiment, and one first spacer sleeve 42 is also disposed in the fixing sleeve 41, specifically, the two second focusing lenses 32 can be spaced apart. The front end of the fixing sleeve 41 is further connected with a first pressing sleeve 43, and the first pressing sleeve 43 can press the two second focusing lenses 32 backwards on the first annular retaining edge 410 of the fixing sleeve 41. As an alternative embodiment, the second focusing lens 32 in the present embodiment may also be provided with one or three or more than three, and correspondingly, the first spacing sleeve 42 may be omitted or the number of the corresponding first spacing sleeves 42 may be increased.

Referring to fig. 3, in the present embodiment, the diameter of the second focusing lens 32 close to the light emitter 110 of the two second focusing lenses 32 provided in the fixing cover 41 is smaller than the diameter of the second focusing lens 32 relatively far from the light emitter 110, that is, the diameter of the second focusing lens 32 located in the front of the fixing cover 41 is larger than the diameter of the second focusing lens 32 located in the rear of the fixing cover 41.

Referring to fig. 2, the first focusing lens 31 in the present embodiment is disposed in the rotation adjusting head and can move back and forth with respect to the light emitting body 110. Specifically, the first focusing lens 31 of the present embodiment is divided into two front and rear groups, wherein one group of the first focusing lens 31 is fitted in the first sliding sleeve 50 and located in front of the rotation adjusting head 20, and the other group of the first focusing lens 31 is fitted in the second sliding sleeve 60 and located in front of the rotation adjusting head 20. The front and rear sets of first focusing lenses 31 (i.e., the first and second sliding sleeves 50 and 60) can be moved toward and away from each other when the rotary adjustment head 20 is rotated.

Referring to fig. 2 and 4, the rotary adjusting head 20 in the present embodiment includes an inner cylinder 21, an outer cylinder 22, and an adjusting sleeve 23. The inner cylinder 21 and the outer cylinder 22 in this embodiment are both in a stepped cylinder 10 structure with a large front part and a small rear part, the rear end of the inner cylinder 21 is connected to the lamp holder 11, the outer cylinder 22 is sleeved outside the inner cylinder 21, specifically, the outer cylinder 22 is coaxially arranged with the inner cylinder 21, and a slight gap is formed between the inner wall of the outer cylinder 22 and the outer wall of the inner cylinder 21, so that the outer cylinder 22 can rotate around its own axis relative to the inner cylinder 21. The adjusting sleeve 23 is sleeved and connected on the outer side of the outer cylinder 22 and can drive the outer cylinder 22 to rotate, wherein the inner wall of the adjusting sleeve 23 is in threaded connection with the outer wall of the outer cylinder 22, and the threaded connection positions of the adjusting sleeve 23 and the outer cylinder 22 are correspondingly located at the rear end position of the adjusting sleeve 23 and the position of the large hole section of the outer cylinder 22 close to the step part.

Referring to fig. 2, the rear end of the inner tube 21 is attached to the lamp socket 11. The front part of the wall of the inner cylinder 21 is provided with a first strip-shaped sliding groove 211 which penetrates through the inside and the outside and extends along the self axial direction, and the rear part of the wall of the inner cylinder 21 is provided with a second strip-shaped sliding groove 212 which penetrates through the inside and the outside and extends along the self axial direction. Specifically, the inner cylinder 21 includes a first large hole section 213 at the front part and a first small hole section 214 at the rear part, the first strip-shaped sliding groove 211 is disposed on the first large hole section 213 of the inner cylinder 21, and the second strip-shaped sliding groove 212 is disposed on the first small hole section 214 of the inner cylinder 21, as shown in detail in fig. 6.

With continued reference to fig. 2, the outer cartridge 22 includes a second, forward, large bore section 223 and a second, rearward, small bore section 224. The second large hole section 223 of the outer cylinder 22 corresponds to the first large hole section 213 of the inner cylinder 21, and the second small hole section 224 of the outer cylinder 22 corresponds to the first small hole section 214 of the inner cylinder 21. The wall of the second large hole section 223 of the outer cylinder 22 is provided with a first spiral sliding groove 221 spirally arranged along the self axial direction, and the wall of the second small hole section 224 of the outer cylinder 22 is provided with a second spiral sliding groove 222 spirally arranged along the self axial direction. The spiral direction of the second spiral sliding groove 222 is opposite to the spiral direction of the first spiral sliding groove 221, and is shown in detail in fig. 5.

Referring to fig. 2, the second sliding sleeve 60 has a second sliding key 61 extending radially outward on the outer wall thereof, and the second sliding key 61 passes through the second strip-shaped sliding groove 212 of the inner cylinder 21 and extends into the second spiral sliding groove 222 of the outer cylinder 22. The first sliding key 51 is arranged on the outer wall of the first sliding sleeve 50, and the first sliding key 51 passes through the first strip-shaped sliding groove 211 of the inner cylinder 21 and extends into the first spiral sliding groove 221 of the outer cylinder 22. As a preferred embodiment, in the present embodiment, there are two first sliding keys 51 of the first sliding sleeve 50, the two first sliding keys 51 are symmetrically disposed on the outer wall of the first sliding sleeve 50, and correspondingly, there are two first linear sliding grooves 211 on the inner cylinder 21 and two first spiral sliding grooves 221 on the outer cylinder 22. Similarly, there are two second sliding keys 61 of the second sliding sleeve 60, the two second sliding keys 61 are symmetrically disposed on the outer wall of the second sliding sleeve 60, and correspondingly, there are two second strip-shaped sliding grooves 212 and two second spiral sliding grooves 222.

The rotation adjustment process of the front and rear two sets of first focusing lenses 31 in the rotation adjustment head 20 of the present embodiment:

the user rotates the adjusting sleeve 23, the adjusting sleeve 23 can drive the outer cylinder 22 to rotate together, the inner cylinder 21 is fixed, and corresponding sliding keys on the outer walls of the front and rear sliding sleeves are limited in the first strip-shaped sliding groove 211 and the second strip-shaped sliding groove 212 of the inner cylinder 21 and extend into the two spiral sliding grooves of the outer cylinder 22, so the first sliding key 51 on the first sliding sleeve 50 and the second sliding key 61 of the second sliding sleeve 60 can move forward or backward along the first strip-shaped sliding groove 211 of the inner cylinder 21 under the driving of the side walls of the front and rear spiral sliding grooves of the outer cylinder 22, and because the spiral direction of the second spiral sliding groove 222 on the outer cylinder 22 is opposite to the spiral direction of the first spiral sliding groove 221 (see fig. 5 for details), when the outer cylinder 22 rotates, the first sliding sleeve 50 and the second sliding sleeve 60 can move simultaneously to approach or separate from each other.

Referring to fig. 2, there are two first focusing lenses 31 in the first sliding sleeve 50 in the present embodiment. The front end of the first sliding sleeve 50 is provided with a second annular retaining edge 52 extending radially inwards, two first focusing lenses 31 are arranged in the rear end of the first sliding sleeve 50 and are separated by a second spacer sleeve 53, and the rear end of the first sliding sleeve 50 is also connected with a second pressing sleeve 54 which can be used for pressing the two first focusing lenses 31 on the second annular retaining edge 52 of the first sliding sleeve 50. As an alternative embodiment, one or three or more first focusing lenses 31 may be provided in the first sliding sleeve 50, and accordingly, the second spacer 53 may be omitted or the number of the second spacer 53 may be increased.

Referring to fig. 2, in the present embodiment, one first focusing lens 31 is disposed in the second sliding sleeve 60, and the front end of the second sliding sleeve 60 has a third annular ledge 62 extending radially inward, and the first focusing lens 31 can be inserted from the rear end of the second sliding sleeve 60 and then pressed against the third annular ledge 62 of the second sliding sleeve 60 by a third pressing sleeve 63 correspondingly connected to the rear end of the second sliding sleeve 60. As an alternative embodiment, two or more first focusing lenses 31 may be provided in the second sliding sleeve 60, and correspondingly, a corresponding spacer (which may have the same structure as the second spacer 53 in the first sliding sleeve 50) may be added to space the plurality of first focusing lenses 31 in the second sliding sleeve 60.

The focusing flashlight of the embodiment has a plurality of advantages: firstly, the front part of the luminous body 110 of the flashlight is provided with a plurality of focusing lenses, which comprise a second focusing lens 32 which keeps a fixed distance with the luminous body 110 and at least two first focusing lenses 31 which can move back and forth relative to the luminous body 110, so that in the rotating and focusing process of the flashlight, the luminous energy emitted by the luminous body 110 is refracted as much as possible, thereby reducing the light loss to the maximum extent and enhancing the illumination intensity; secondly, all parts of the rotary adjusting head 20 are reasonably arranged, the operation is convenient, when a user rotates the rotary adjusting head 20, two groups of first focusing lenses 31 arranged at the front part and the rear part of the rotary adjusting head 20 can synchronously move, and the focusing process is very flexible and convenient; moreover, when the outer tube 22 rotates, the two groups of first focusing lenses 31 in the rotary adjusting head 20 can approach or separate from each other along with the corresponding sliding sleeves, so that the uniformity of light emission of the flashlight in the focusing process is ensured, and the purpose of rapid focusing of the flashlight is achieved.

Claims (10)

1. A focusing flashlight, comprising:

a cylinder (10);

the lamp holder (11) is connected to the front end of the barrel (10), and a luminous body (110) is arranged on the lamp holder;

the rotary adjusting head (20) is connected to the front end of the lamp holder (11), and a first focusing lens (31) which can move back and forth relative to the luminous body (110) is arranged on the rotary adjusting head;

the method is characterized in that: the number of the first focusing lenses (31) is at least two, each second focusing lens (32) is arranged along the axial direction of the rotary adjusting head (20) at intervals and can be movably arranged on the rotary adjusting head (20) back and forth, and at least one second focusing lens (32) which keeps a fixed distance from the light emitting body (110) is further arranged at the front end of the light emitting body (110).

2. The focusing flashlight of claim 1, wherein: the LED lamp further comprises a fixed sleeve assembly (40) detachably connected to the lamp holder (11), and the second focusing lens (32) is arranged on the fixed sleeve assembly (40).

3. The focusing flashlight of claim 2, wherein: the two second focusing lenses (32) are arranged at intervals along the axial direction of the fixed sleeve assembly (40), wherein the diameter of the second focusing lens (32) close to the luminous body (110) is smaller than that of the second focusing lens (32) relatively far away from the luminous body (110).

4. The focusing flashlight of claim 3, wherein: fixed cover subassembly (40) are including fixed cover (41), first spacer sleeve (42) and first cover (43) that compresses tightly, fixed cover (41) are connected on lamp stand (11) to have radial inside extension the first annular that forms and keep off along (410) at the rear port, two second focusing lens (32) all locate in fixed cover (41), and separate through corresponding first spacer sleeve (42) of locating in fixed cover (41), first cover (43) that compresses tightly is connected the preceding port of fixed cover (41), thereby will two second focusing lens (32) compress tightly backward and be in first annular keep off on along (410).

5. The focusing flashlight of any one of claims 1-4, wherein: the two groups of first focusing lenses (31) are respectively arranged at the front part and the rear part of the rotary adjusting head (20), and can be close to or far away from each other when the rotary adjusting head (20) rotates.

6. The focusing flashlight of claim 5, wherein: a set of first focusing lenses (31) located at the front of the rotary adjusting head (20) is fitted in a first sliding sleeve (50), and a set of first focusing lenses (31) located at the rear of the rotary adjusting head (20) is fitted in a second sliding sleeve (60);

the rotary adjustment head (20) comprises:

the rear end of the inner cylinder (21) is connected to the lamp holder (11), a first strip-shaped sliding groove (211) which penetrates through the inner cylinder and the outer cylinder and extends along the self axial direction is arranged at the front part of the wall of the inner cylinder (21), and a second strip-shaped sliding groove (212) which penetrates through the inner cylinder and the outer cylinder and extends along the self axial direction is arranged at the rear part of the wall of the inner cylinder (21);

an outer cylinder (22) sleeved outside the inner cylinder (21) and arranged coaxially with the inner cylinder (21), the outer cylinder (22) can rotate around the axis of the outer cylinder relative to the inner cylinder (21), a first spiral chute (221) spirally arranged along the axial direction of the outer cylinder is arranged at the front part of the wall of the outer cylinder (22), so that a first sliding key (51) correspondingly arranged on the outer wall of the first sliding sleeve (50) passes through the first strip-shaped sliding groove (211) of the inner cylinder (21) and extends into the first strip-shaped sliding groove, the rear part of the wall of the outer cylinder (22) is provided with a second spiral sliding chute (222) which is spirally arranged along the self axial direction, so that a second sliding key (61) correspondingly arranged on the outer wall of the second sliding sleeve (60) passes through a second strip-shaped sliding groove (212) of the inner cylinder (21) and extends into the second sliding groove, the spiral direction of the second spiral chute (222) is opposite to the spiral direction of the first spiral chute (221);

and the adjusting sleeve (23) is sleeved outside the outer cylinder (22) and can drive the outer cylinder (22) to rotate.

7. The focusing flashlight of claim 6, wherein: the inner cylinder (21) comprises a first big hole section (213) positioned at the front part and a first small hole section (214) positioned at the rear part, the first strip-shaped sliding chute (211) is arranged on the first big hole section (213) of the inner cylinder (21), and the second strip-shaped sliding chute (212) is arranged on the first small hole section (214) of the inner cylinder (21);

the outer barrel (22) comprises a second big hole section (223) located at the front part and a second small hole section (224) located at the rear part, the second big hole section (223) corresponds to the first big hole section (213) of the inner barrel (21), the second small hole section (224) corresponds to the first small hole section (214) of the inner barrel (21), the first spiral sliding groove (221) is arranged on the second small hole section (224) of the outer barrel (22), and the second spiral sliding groove (222) is arranged on the second big hole section (223) of the outer barrel (22).

8. The focusing flashlight of claim 7, wherein: the number of the first sliding keys (51) is two, the first sliding keys are symmetrically arranged on the outer wall of the first sliding sleeve (50), and the number of the first strip-shaped sliding grooves (211) and the number of the first spiral sliding grooves (221) are two;

the number of the second sliding keys (61) is two, the second sliding keys are symmetrically arranged on the outer wall of the second sliding sleeve (60), and the number of the second strip-shaped sliding grooves (212) and the number of the second spiral sliding grooves (222) are two.

9. The focusing flashlight of claim 6, wherein: the number of the first focusing lenses (31) in the first sliding sleeve (50) is two, the front port of the first sliding sleeve (50) is provided with a second annular retaining edge (52) which extends inwards in the radial direction, the two first focusing lenses (31) are arranged from the rear port of the first sliding sleeve (50) and are separated by a second spacing sleeve (53), and the rear port of the first sliding sleeve (50) is also connected with a second pressing sleeve (54) which is used for pressing the two first focusing lenses (31) on the second annular retaining edge (52).

10. The focusing flashlight of claim 6, wherein: one first focusing lens (31) is arranged in the second sliding sleeve (60), a third annular blocking edge (62) formed by extending inwards in the radial direction is arranged at the front port of the second sliding sleeve (60), the first focusing lens (31) is installed from the rear port of the second sliding sleeve (60) and is pressed on the third annular blocking edge (62) of the second sliding sleeve (60) through a third pressing sleeve (63) correspondingly connected to the rear port of the second sliding sleeve (60).

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