A zoom flashlight

Abstract

The utility model discloses a zoom flashlight, wherein the lamp cap is fixed to the front end of the cylinder, the front end of the cylinder is formed with a sliding seat at the axis, the rear end of the sliding sleeve is sleeved on the sliding seat, the front end of the sliding sleeve is provided with a Fresnel lens opposite to the light source assembly, the rear end of the lamp cap is formed with a lantern ring accommodating cavity, the transmission lantern ring is rotatably arranged in the lantern ring accommodating cavity, the transmission lantern ring is sleeved on the outside of the sliding sleeve, and the inner transmission thread and the outer transmission thread are mutually screwed, the adjusting lantern ring is rotatably sleeved on the rear end outside of the lamp cap, the first magnetic assembly is arranged on the adjusting lantern ring, the second magnetic assembly is arranged on the transmission lantern ring, the first magnetic assembly and the second magnetic assembly are magnetically matched, the transmission lantern ring is driven to rotate when the adjusting lantern ring is rotated, and the sliding sleeve is driven to slide forward and backward by the transmission lantern ring. The utility model is more easy to reach the technical requirement such as high water pressure resistance, high waterproof performance, and is especially suitable for underwater photography and other application occasions.

Description

Technical Field

[0001] This utility model relates to flashlights, and more particularly to a zoom flashlight. Background Technology

[0002] As a lighting device, flashlights can be used in various occasions such as outdoor sports and underwater photography. To achieve brightness adjustment, some flashlights have a Fresnel lens at the head. For relevant structures, please refer to the Chinese patent publication document with announcement number CN211289635U and title "Flashlight and Optical Components Thereof". It describes that: "The light source 21 and the Fresnel lens 221 are arranged alternately. The Fresnel lens 221 and the reflector 22 are arranged coaxially. The reflector 22 is integrally formed. The user can push the body 4 forward, and the light source 21 at the front end of the body 4 will approach the lens until the body 4 reaches the first limit position and is locked. At this time, the flashlight 1 is in a pan-focused state, and the light source 21 has a large projection range. When the user pulls the body 4 backward, the light source 21 moves away from the lens until the body 4 reaches the second limit position and is locked. At this time, the flashlight 1 is in a focused state, and the light source 21 is focused into a brighter beam."

[0003] In this type of equipment, the tube body is nested inside the lamp head housing and is engaged by sliding grooves. This push-pull structure makes it difficult to reliably seal the connection between the tube body and the lamp head. When users need to perform activities such as underwater photography, it cannot withstand underwater pressure and has insufficient waterproofing capabilities. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a zoom flashlight with stronger waterproof capabilities, addressing the shortcomings of existing technologies.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0006] A zoom flashlight includes a tube body, a lamp head, a sliding sleeve, a transmission collar, and an adjusting collar. The lamp head is fixed to the front end of the tube body and the two are sealed together. A light-transmitting lens is provided at the front end of the lamp head. A slide is formed at the axial center of the front end of the tube body. The rear end of the sliding sleeve is fitted onto the slide, and the sliding sleeve can slide back and forth relative to the slide. A light source assembly is fixed to the front end of the slide. A Fresnel lens opposite to the light source assembly is provided at the front end of the sliding sleeve. A collar receiving cavity is formed on the inner side of the rear end of the lamp head. The transmission collar is rotatably disposed in the collar receiving cavity. Inside the cavity, the outer wall of the sliding sleeve has an external drive thread, and the inner wall of the drive ring has an internal drive thread. The drive ring is sleeved on the outside of the sliding sleeve, and the internal drive thread and the external drive thread are screwed together. The adjusting ring is rotatably sleeved on the outer rear end of the lamp head. The adjusting ring is provided with a first magnetic component, and the drive ring is provided with a second magnetic component. The first magnetic component and the second magnetic component are magnetically engaged. When the adjusting ring is rotated, the drive ring is driven to rotate, and the sliding sleeve is driven to slide back and forth by the drive ring.

[0007] Preferably, the front end of the sliding sleeve is formed with a conical cover, and the Fresnel lens is fixed to the wide end of the conical cover.

[0008] Preferably, the slide block is provided with limiting screws on both sides, and the slide sleeve is provided with limiting grooves on both sides, with the limiting screws passing through the limiting grooves and the two slidingly engaged.

[0009] Preferably, the adjusting collar is provided with a plurality of first receiving grooves, and the first magnetic component includes a plurality of first arc-shaped magnets, which are respectively disposed in the plurality of first receiving grooves.

[0010] Preferably, the outer side of the transmission collar is provided with a plurality of second receiving grooves, and the second magnetic component includes a plurality of second arc-shaped magnets, which are respectively disposed in the plurality of second receiving grooves, and the first arc-shaped magnet and the second arc-shaped magnet are magnetically engaged.

[0011] Preferably, the outer surface of the adjusting collar has anti-slip texture.

[0012] Preferably, the lamp head has an inner flange on its inner side, and the collar receiving cavity is formed between the inner flange and the front end of the cylinder.

[0013] Preferably, the slide extends a predetermined length toward the inside of the lamp head.

[0014] Preferably, both the cylinder and the slide are made of metal, and the light source assembly includes a lamp plate, the heating surface of which is attached to the slide.

[0015] Preferably, the light source assembly includes a focusing lens, which is disposed at the front end of the lamp panel and aligned with the lamp beads on the lamp panel.

[0016] In the zoom flashlight disclosed in this utility model, the sliding sleeve can slide back and forth relative to the sliding base. When the back and forth position of the sliding sleeve is adjusted, the distance between the Fresnel lens and the light source assembly can be adjusted, thereby realizing corner operation. To achieve this adjustment function, this utility model rotatably sleeves the adjustment ring on the outside of the lamp head. When the user rotates the adjustment ring, based on the magnetic engagement between the first magnetic component on the adjustment ring and the second magnetic component on the transmission ring, the adjustment ring can drive the transmission ring to rotate together. Based on the screw drive engagement between the transmission ring and the sliding sleeve, the sliding sleeve is further driven to slide back and forth. Compared with the prior art, this utility model achieves contactless driving through the magnetic engagement between the inner and outer magnetic components. During manufacturing, only the fixed connection between the sliding sleeve and the cylinder needs to achieve a waterproof seal, making it easier to meet technical requirements such as high water pressure resistance and high waterproof performance, and is particularly suitable for applications such as underwater photography. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the zoom flashlight of this utility model;

[0018] Figure 2 This is an exploded view of the zoom flashlight of this utility model;

[0019] Figure 3 An exploded view of the lamp holder, sliding sleeve, transmission collar, and adjusting collar;

[0020] Figure 4 This is a cross-sectional view of the zoom flashlight of this utility model. Detailed Implementation

[0021] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0022] This utility model discloses a zoom flashlight, combined with Figures 1 to 4As shown, it includes a cylindrical body 1, a lamp head 2, a sliding sleeve 3, a transmission collar 4, and an adjusting collar 5. The lamp head 2 is fixed to the front end of the cylindrical body 1, and the two are sealed together. A light-transmitting lens 20 is provided at the front end of the lamp head 2. A slide block 10 is formed at the front axis of the cylindrical body 1. The rear end of the sliding sleeve 3 is sleeved on the slide block 10, and the sliding sleeve 3 can slide back and forth relative to the slide block 10. A light source assembly 11 is fixed to the front end of the slide block 10. A Fresnel lens 30 is provided at the front end of the sliding sleeve 3 opposite to the light source assembly 11. A collar receiving cavity 21 is formed on the inner side of the rear end of the lamp head 2. The transmission collar 4 is rotatably set... Within the collar receiving cavity 21, the outer wall of the sliding sleeve 3 has an external drive thread, and the inner wall of the drive collar 4 has an internal drive thread. The drive collar 4 is sleeved on the outer side of the sliding sleeve 3, and the internal drive thread and the external drive thread are screwed together. The adjusting collar 5 is rotatably sleeved on the outer rear end of the lamp head 2. The adjusting collar 5 is provided with a first magnetic component, and the drive collar 4 is provided with a second magnetic component. The first magnetic component and the second magnetic component are magnetically engaged. When the adjusting collar 5 is rotated, the drive collar 4 is driven to rotate, and the sliding sleeve 3 is driven to slide back and forth by the drive collar 4.

[0023] In the above structure, the sliding sleeve 3 can slide back and forth relative to the sliding base 10. When the back and forth position of the sliding sleeve 3 is adjusted, the distance between the Fresnel lens 30 and the light source assembly 11 can be adjusted, thereby realizing corner operation. To achieve this adjustment function, the present invention rotatably sleeves the adjusting ring 5 on the outside of the lamp head 2. When the user rotates the adjusting ring 5, based on the magnetic cooperation between the first magnetic component on the adjusting ring 5 and the second magnetic component on the transmission ring 4, the adjusting ring 5 can drive the transmission ring 4 to rotate together. Based on the screw drive cooperation between the transmission ring 4 and the sliding sleeve 3, the sliding sleeve 3 is further driven to slide back and forth. Compared with the prior art, the present invention achieves contactless driving through the magnetic cooperation between the inner and outer magnetic components. During manufacturing, only the fixed connection between the sliding sleeve 3 and the cylinder 1 needs to achieve a waterproof seal. Therefore, it is easier to meet the technical requirements of high water pressure resistance and high waterproof performance, and is particularly suitable for underwater photography and other applications.

[0024] As a preferred embodiment, the front end of the sliding sleeve 3 is formed with a conical cover 31, and the Fresnel lens 30 is fixed to the wide end of the conical cover 31.

[0025] In this embodiment, the sliding sleeve 3 is limited to sliding in the front-to-back direction, combined with Figures 2 to 4As shown, the slide block 10 is provided with limiting screws 12 on both sides, and the slide sleeve 3 is provided with limiting grooves 32 on both sides. The limiting screws 12 pass through the limiting grooves 32 and the two slide in cooperation.

[0026] Regarding the preferred cooperation method between the first magnetic component and the second magnetic component, in this embodiment, the adjusting collar 5 is provided with a plurality of first receiving grooves 50, and the first magnetic component includes a plurality of first arc-shaped magnets 51, which are respectively disposed in the plurality of first receiving grooves 50.

[0027] Furthermore, the outer side of the transmission collar 4 is provided with a plurality of second receiving grooves 40, and the second magnetic component includes a plurality of second arc-shaped magnets 41, which are respectively disposed in the plurality of second receiving grooves 40, and the first arc-shaped magnet 51 and the second arc-shaped magnet 41 are magnetically engaged.

[0028] In the above structure, the number of the first arc-shaped magnet 51 and the second arc-shaped magnet 41 can be the same or different. The magnetic cooperation between the first arc-shaped magnet 51 and the second arc-shaped magnet 41, i.e. the inner and outer magnets, can be magnetically attracted or magnetically repelled. Both of these methods can achieve torque transmission.

[0029] To facilitate manual adjustment, in this embodiment, the outer surface of the adjusting collar 5 has anti-slip texture.

[0030] As a preferred embodiment, the lamp holder 2 has an inner flange 22 on its inner side, and the collar receiving cavity 21 is formed between the inner flange 22 and the front end of the cylinder 1. Under the action of the inner flange 22, the transmission collar 4 can be confined within the collar receiving cavity 21, while ensuring that the transmission collar 4 can rotate smoothly.

[0031] Please see Figure 4 In this embodiment, the slide 10 extends a predetermined length toward the inside of the lamp head 2.

[0032] For the specific structure of the light source assembly 11, please refer to [link / reference]. Figure 4 Both the cylindrical body 1 and the slide 10 are made of metal. The light source assembly 11 includes a lamp plate 110, the heating surface of which is attached to the slide 10. The heating surface of the lamp plate 110 is attached to the metal cylindrical body and slide. Compared to traditional flashlights where the lamp plate position is adjusted, this invention ensures rapid heat dissipation, especially when used underwater, as the cylindrical body 1 is submerged, significantly improving heat dissipation.

[0033] In a preferred embodiment, the light source assembly 11 includes a focusing lens 111, which is disposed at the front end of the lamp panel 110 and aligned with the lamp beads 112 on the lamp panel 110. The focusing lens 111 focuses the light beam emitted from the lamp beads 112 into the sliding sleeve 3 to reduce light scattering loss, before it is emitted outwards through the Fresnel lens 30.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A zoom flashlight, characterized in that, The device includes a cylindrical body (1), a lamp head (2), a sliding sleeve (3), a transmission collar (4), and an adjusting collar (5). The lamp head (2) is fixed to the front end of the cylindrical body (1) and the two are sealed together. A light-transmitting lens (20) is provided at the front end of the lamp head (2). A slide (10) is formed at the front axis of the cylindrical body (1). The rear end of the sliding sleeve (3) is sleeved on the slide (10), and the sliding sleeve (3) can slide back and forth relative to the slide (10). A light source assembly (11) is fixed to the front end of the slide (10). A Fresnel lens (30) is provided at the front end of the sliding sleeve (3) opposite to the light source assembly (11). A collar receiving cavity (21) is formed on the inner side of the rear end of the lamp head (2). The transmission collar (4) is... The ring (4) is rotatably disposed in the collar receiving cavity (21). The outer wall of the sliding sleeve (3) is formed with an external transmission thread, and the inner wall of the transmission collar (4) is formed with an internal transmission thread. The transmission collar (4) is sleeved on the outer side of the sliding sleeve (3), and the internal transmission thread and the external transmission thread are screwed together. The adjusting collar (5) is rotatably sleeved on the outer side of the rear end of the lamp head (2). The adjusting collar (5) is provided with a first magnetic component, and the transmission collar (4) is provided with a second magnetic component. The first magnetic component and the second magnetic component are magnetically engaged. When the adjusting collar (5) is rotated, the transmission collar (4) is driven to rotate, and the sliding sleeve (3) is driven to slide back and forth by the transmission collar (4).

2. The zoom flashlight as described in claim 1, characterized in that, The front end of the sliding sleeve (3) is formed with a conical cover (31), and the Fresnel lens (30) is fixed to the wide end of the conical cover (31).

3. The zoom flashlight as described in claim 1, characterized in that, The slide block (10) is provided with limiting screws (12) on both sides, and the slide sleeve (3) is provided with limiting grooves (32) on both sides. The limiting screws (12) pass through the limiting grooves (32) and the two slide together.

4. The zoom flashlight as described in claim 1, characterized in that, The adjusting collar (5) has multiple first receiving grooves (50), and the first magnetic component includes multiple first arc magnets (51), which are respectively disposed in multiple first receiving grooves (50).

5. The zoom flashlight as described in claim 4, characterized in that, The transmission collar (4) has a plurality of second receiving grooves (40) on its outer side. The second magnetic component includes a plurality of second arc magnets (41). The plurality of second arc magnets (41) are disposed in the plurality of second receiving grooves (40). The first arc magnet (51) and the second arc magnet (41) are magnetically engaged.

6. The zoom flashlight as described in claim 1, characterized in that, The outer surface of the adjusting collar (5) has anti-slip texture.

7. The zoom flashlight as described in claim 1, characterized in that, The lamp head (2) has an inner flange (22) on its inner side, and the collar receiving cavity (21) is formed between the inner flange (22) and the front end of the cylinder (1).

8. The zoom flashlight as described in claim 1, characterized in that, The slide (10) extends a predetermined length toward the inside of the lamp head (2).

9. The zoom flashlight as described in claim 1, characterized in that, Both the cylinder (1) and the slide (10) are made of metal. The light source assembly (11) includes a lamp plate (110), and the heating surface of the lamp plate (110) is attached to the slide (10).

10. The zoom flashlight as described in claim 9, characterized in that, The light source assembly (11) includes a focusing lens (111), which is located at the front end of the lamp panel (110) and is aligned with the lamp beads (112) on the lamp panel (110).

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