Flashlight with adjustable focal length

Abstract

The flashlight comprises a focusing part and a lamp holder used for installing a lamp source, and the top of an inner cavity of the lamp holder is provided with a second clamping part used for limiting the tail of the lamp source and a first clamping part used for limiting the head of the lamp source. The distance between the second clamping portion and the first clamping portion is larger than the width of the lamp source, and the lamp holder further comprises an elastic clamping portion used for enabling the lamp source to abut against the first clamping portion. In the implementation process of the lamp holder, due to the arrangement of the second clamping part and the first clamping part, on one hand, a space for limiting movement is provided for the lamp source, on the other hand, the second clamping part and the first clamping part reinforce the position of the head of the lamp holder, and the position between the second clamping part and the first clamping part can guarantee a relatively firm space not prone to deformation; therefore, the flashlight still has a good lighting effect after being frequently used.

Description

Technical Field

[0001] The present application relates to the technical field of flashlights, and in particular to a flashlight with adjustable focal length. Background Art

[0002] A focus flashlight can change the lighting distance and concentration by adjusting the focal length. Existing zoom flashlights add a lens in front of the light source. By changing the distance between the lens and the bulb, the direction of the light emitted by the bulb is changed, thereby achieving the adjustment effect of long-distance lighting (concentrated, high brightness) and close-range lighting (floodlight, large area).

[0003] During long-term use and frequent focusing of a zoom flashlight, the lamp holder and the focusing head frequently move relative to each other, and the head of the lamp holder is prone to deformation, which can cause the light source to become loose or skewed, thereby affecting the lighting effect. Utility Model Content

[0004] One object of the present application is to provide a flashlight with adjustable focal length.

[0005] To achieve the above objectives, the technical solution adopted in this application is: a flashlight with adjustable focal length, comprising a focusing part and a lamp holder for mounting a light source, a second clamping part for limiting the tail of the light source and a first clamping part for limiting the head of the light source provided at the top of the inner cavity of the lamp holder, the spacing between the second clamping part and the first clamping part being greater than the width of the light source, and the lamp holder also comprising an elastic clamping part for making the light source abut against the first clamping part.

[0006] As a preferred embodiment, the flashlight with adjustable focal length also includes a lamp cover, the inner cavity of the lamp cover fits and wraps the head of the lamp holder, and a locking structure is provided between the tail of the lamp cover and the lamp holder; the top of the lamp cover is provided with a focusing portion for aggregating the light of the light source, and the focusing portion is funnel-shaped; the innermost side of the focusing portion is coplanar with the innermost side of the first clamping portion, and the elastic clamping portion elastically abuts the light source against the inner ring hole of the focusing portion.

[0007] Further preferably, a focusing piece is provided at the top of the inner cavity of the focusing part, and the focusing piece is arranged coaxially with the light source; the middle part of the inner cavity of the focusing part is connected to the outer wall of the lamp cover, and a damping washer is provided on the outer wall of the lamp cover, and the focusing part increases the friction between the focusing part and the lamp cover during relative sliding through the damping washer.

[0008] Further preferably, a limiting portion is provided at the tail of the focusing portion, and a plurality of anti-slip protrusions are equidistantly provided on the outer wall of the lamp holder. The anti-slip protrusions at the top, the tail end surface of the lamp cover and the outer wall of the lamp holder together form a sliding space for limiting the sliding of the limiting portion.

[0009] As a preference, the locking structure includes a locking portion arranged on the inner side of the rear end of the lamp cover and a locking groove arranged on the outer side of the top of the lamp holder, wherein the locking groove is an L-shaped slot, and the locking portion at the rear end of the lamp cover is aligned and inserted into the L-shaped slot and then rotated to lock the lamp cover and the lamp holder.

[0010] Further preferably, a conical groove is provided in the middle of the locking portion, and a conical anti-slip part is provided in the locking groove. When the locking portion is aligned with the L-shaped slot, inserted and rotated, the locking portion interacts with the anti-slip part when passing through the anti-slip part, and then the conical groove fits in with the anti-slip part.

[0011] As a preference, the second clamping portion is a circular clamping ring or a plurality of clamping blocks equidistantly distributed along the inner cavity of the lamp holder; the first clamping portion is a circular clamping ring or a plurality of clamping blocks equidistantly distributed along the inner cavity of the lamp holder.

[0012] Further preferably, the elastic snap-fitting portion is an elastic snap-fitting piece integrally formed with the second snap-fitting portion, an inclination angle is formed between the elastic snap-fitting piece and the second snap-fitting portion, and the minimum distance between the elastic snap-fitting piece and the second snap-fitting piece in the initial state is less than or equal to the width of the light source; the lamp holder includes a detachable upper shell and a lower shell, and during installation, the light source and the inclined elastic snap-fitting piece in the upper shell are abutted against each other to cause the elastic snap-fitting piece to undergo ductile deformation, thereby causing the light source to be snap-fitted and installed in the upper shell, and then the lower shell is snap-fitted to the light source in the same manner, and finally the upper shell and the lower shell are fixedly connected to complete the installation of the light source.

[0013] As a preference, the L-shaped slot is arranged on the inner side of the lamp holder at a position corresponding to the light source, and a through hole is provided at the top of the L-shaped slot. When the locking portion and the L-shaped slot are matched, a heat dissipation gap is formed between the lamp cover and the lamp holder at the position of the L-shaped slot.

[0014] As a preference, a position indicating protrusion is provided on the outer side of the top end of the lamp cover, and a position indicating groove is provided on the inner tail end of the focusing part, and the position indicating protrusion and the position indicating groove form a locking position when matched; a protective part is provided on the side where the light source is connected to the elastic clamping part, and the protective part is made of rubber material.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The setting of the second locking part and the first locking part provides space for limiting the movement of the light source on the one hand, and on the other hand, the second locking part and the first locking part themselves also strengthen the position of the lamp holder head. The position between the second locking part and the first locking part can ensure a relatively firm and non-deformable space, so that the flashlight still has a good lighting effect after frequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0018] Figure 2 yes Figure 1 State diagram when the structure is dispersed.

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure when continuing to disperse on the basis.

[0020] Figure 4 This is a diagram of the flashlight in use after the focus adjustment is turned on.

[0021] Figure 5 yes Figure 1 The dispersed structure diagram of the mesostructure from another angle.

[0022] Figure 6 yes Figure 5 Schematic diagram of the installation structure.

[0023] Figure 7 It is a structural diagram of the lamp cover installation.

[0024] Figure 8 yes Figure 1 Cross-sectional view above the middle grip.

[0025] In the figure: 1. Focusing part; 2. Lamp holder; 3. Grip part; 4. Lamp tail; 5. Lamp cover; 6. Locking part; 7. Locking slot; 8. Anti-slip part; 9. Positioning protrusion; 10. Through hole; 11. Charging port; 12. Reinforcement layer; 13. Protective part; 14. Light source; 15. Elastic clamping part; 16. First clamping part; 17. Second clamping part; 18. Heat dissipation gap; 19. Limiting part; 20. Focusing part; 21. Damping washer. DETAILED DESCRIPTION

[0026] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0029] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0030] Example:

[0031] Reference Figures 1 to 8 This embodiment provides a flashlight with adjustable focus, comprising a focus adjustment portion 1 and a lamp holder 2 for mounting a light source 14. The lamp holder 2 has a grip portion 3 at the end thereof for holding the light. The grip portion 3 may further have a lamp tail 4 with a hanging hole at the end thereof, so that the flashlight can be conveniently carried with a rope. Figure 4 As shown, in this embodiment, a charging port 11 is provided in the middle of the lamp holder 2. In the initial state, the charging port 11 is hidden by the focusing part 1. When charging is needed, the focusing part 1 is moved outward to expose the charging port 11.

[0032] Unlike the prior art, the top of the inner cavity of the lamp holder 2 in this embodiment is provided with a second clamping portion 17 for limiting the tail of the light source 14 and a first clamping portion 16 for limiting the head of the light source 14. The distance between the second clamping portion 17 and the first clamping portion 16 is greater than the width of the light source 14. The lamp holder 2 also includes an elastic clamping portion 15 for making the light source 14 abut against the first clamping portion 16. Figure 3 and Figure 6By setting the second clamping portion 17 and the first clamping portion 16, the light source 14 is confined between the second clamping portion 17 and the first clamping portion 16. At the same time, by setting the elastic clamping portion 15, the light source 14 can maintain contact with the first clamping portion 16. Due to the frequent adjustment of the focusing portion 1 back and forth, the section where the head of the lamp holder 2 and the focusing portion 1 are connected is prone to deformation. At this time, the light source 14 is prone to loosening or tilting. This will affect the lighting effect during subsequent use. In this embodiment, the restriction between the second clamping portion 17 and the first clamping portion 16 and the elastic abutment of the elastic clamping portion 15 are used to maintain contact with the first clamping portion 16. Then, even if the head of the lamp holder 2 is deformed to a certain extent, the light source 14 can still maintain contact with the first locking portion 16 without being deformed too much. The setting of the second locking portion 17 and the first locking portion 16 provides a space for the light source 14 to limit movement. On the other hand, the second locking portion 17 and the first locking portion 16 themselves also strengthen the position of the head of the lamp holder 2. Even if the head of the lamp holder 2 is deformed to a certain extent, the position between the second locking portion 17 and the first locking portion 16 ensures a relatively firm and non-deformable space, so that the flashlight still has a good lighting effect after frequent use.

[0033] In order to protect the elastic clamping portion 15 from damaging the light source 14 when it acts on the light source 14, a side where the light source 14 and the elastic clamping portion 15 are connected is provided. Figure 5 The protective portion 13 shown can be made of rubber.

[0034] To further protect the lamp holder 2, as Figure 8 As shown, a reinforcement layer 12 is provided in the middle of the lamp holder 2 .

[0035] like Figure 2 、 Figure 3 As shown, the flashlight with adjustable focal length also includes a lamp cover 5. The inner cavity of the lamp cover 5 fits and wraps the head of the lamp holder 2, and a locking structure is provided between the tail of the lamp cover 5 and the lamp holder 2. The lamp cover 5 and the lamp holder 2 are fixed by the locking structure, and this fixation is preferably detachable. The top of the lamp cover 5 is provided with a focusing portion for aggregating the light of the light source 14. The focusing portion is funnel-shaped; the innermost side of the focusing portion is coplanar with the innermost side of the first clamping portion 16, and the elastic clamping portion 15 elastically abuts the light source 14 against the inner ring hole of the focusing portion. On the one hand, the lamp cover 5 wraps and protects the head of the lamp holder 2, and on the other hand, the lamp cover 5 integrates Figure 8 The light-concentrating portion shown in the figure allows the light from the light source 14 to be concentrated and emitted outward, thereby ensuring full utilization of the light. In this case, the light source 14 should not only abut against the first retaining portion 16, but more importantly, it should preferably abut against the inner ring hole of the light-concentrating portion, which also plays a certain role in limiting the position of the light source 14.

[0036] Reference Figure 8 A focusing piece 20 is provided at the top of the inner cavity of the focusing part 1. The focusing piece 20 is arranged coaxially with the light source 14 to ensure that the light from the light source 14 can fully pass through the focusing piece 20 and accurately illuminate. The middle part of the inner cavity of the focusing part 1 is connected to the outer wall of the lamp cover 5. The outer wall of the lamp cover 5 is provided with a damping washer 21. The focusing part 1 increases the friction during relative sliding with the lamp cover 5 through the damping washer 21. The focusing part 1 and the lamp cover 5 move relative to each other, which can reduce the deformation of the lamp holder 2 to a certain extent, thereby reducing the impact on the light source 14. The damping washer 21 can reduce the adjustment speed of the focusing part 1 by increasing friction, thereby ensuring the accuracy of the adjustment.

[0037] like Figure 8 As shown, a limiter 19 is provided at the rear end of the focusing unit 1, and multiple anti-slip bumps are evenly spaced on the outer wall of the lamp holder 2. The top anti-slip bumps, the rear end surface of the lamp cover 5, and the outer wall of the lamp holder 2 together form a sliding space for limiting the movement of the limiter 19. When the limiter 19 and the top anti-slip bumps are in contact, it is the initial state. When the limiter 19 and the rear end surface of the lamp cover 5 abut, the focusing unit 1 reaches its maximum adjustment distance.

[0038] It is worth mentioning that in this specification and in the claims, "top" refers to the direction toward the light-emitting side, while "bottom" or "tail" refers to the direction relative to the above-mentioned "top". Figure 8 The tail of the middle focusing unit 1 refers to the right end of the focusing unit 1 .

[0039] like Figure 2 、 Figure 3 As shown, the locking structure includes a locking portion 6 arranged on the inner side of the rear end of the lamp cover 5 and a locking groove 7 arranged on the outer side of the top of the lamp holder 2. The locking groove 7 is an L-shaped slot. The locking portion 6 at the rear end of the lamp cover 5 is aligned and inserted into the L-shaped slot and then rotated to lock the lamp cover 5 and the lamp holder 2. The locking method is simple.

[0040] In order to further increase the stability after locking, such as Figure 2 As shown, a tapered groove is provided in the middle of the locking portion 6, and a tapered anti-slip member 8 is provided in the locking groove 7. When the locking portion 6 is aligned with the L-shaped slot and inserted and rotated, the locking portion 6 interacts with the anti-slip member 8 as it passes by, and then the tapered groove and the anti-slip member 8 are engaged. To remove the lamp cover 5, first twist the lamp cover 5 in the opposite direction to disengage the tapered groove and the anti-slip member 8, then continue to rotate the lamp cover 5 and finally pull it out.

[0041] like Figure 5 、 Figure 6 As shown, the second clamping portion 17 is a circular clamping ring or a plurality of clamping blocks equidistantly distributed along the inner cavity of the lamp holder 2; the first clamping portion 16 is a circular clamping ring or a plurality of clamping blocks equidistantly distributed along the inner cavity of the lamp holder 2. Figure 6 In the embodiment, the second latching portion 17 is configured as an arc-shaped latching block. The lamp holder 2 preferably has an upper shell and a lower shell in the atmosphere, such as Figure 5 As shown, the upper shell and the lower shell are respectively provided with an arc-shaped clamping block (second clamping portion 17). The first clamping portion 16 is Figure 6 A semicircular snap ring is provided in the middle, and the upper shell and the lower shell are combined to form a complete snap ring (ie the first clamping portion 16).

[0042] Continue as Figure 6 As shown, the elastic clamping portion 15 is an elastic clamping piece integrally formed with the second clamping portion 17. An inclination angle is formed between the elastic clamping piece and the second clamping portion 17. In the initial state, the minimum distance between the elastic clamping piece and the second clamping portion 17 is less than or equal to the width of the light source 14. The lamp holder 2 includes an upper shell and a lower shell. During installation, the light source 14 and the inclined elastic clamping piece in the upper shell are abutted against each other, so that the elastic clamping piece undergoes toughness deformation, thereby clamping the light source 14 into the upper shell. Subsequently, the lower shell is clamped to the light source 14 in the same manner. Finally, the upper shell and the lower shell are fixedly connected to complete the installation of the light source 14. Figure 6 The middle elastic clamping piece is a straight plate. In fact, the elastic clamping portion 15 can also be configured to be arc-shaped.

[0043] like Figure 3 、 Figure 6 and Figure 7 As shown, an L-shaped slot is provided on the inside of the lamp holder 2 at a position corresponding to the light source 14. A through-hole 10 is provided at the top of the L-shaped slot. When the locking portion 6 and the L-shaped slot are engaged, a heat dissipation gap 18 is formed between the lamp cover 5 and the lamp holder 2 at the position of the L-shaped slot. The design of the through-hole 10 effectively helps dissipate heat from the light source 14 without affecting the structure of the lamp holder 2 itself. Because the locking slot 7 is provided on the outside of the lamp holder 2, the position where the lamp cover 5 and the lamp holder 2 are locked by the locking slot 7 and the locking portion 6 forms a gap, namely the aforementioned heat dissipation gap 18, which helps the flashlight dissipate heat effectively.

[0044] Since there is no fixed connection between the focus adjusting part 1 and the lamp cover 5 and the lamp holder 2, the focus adjusting part 1 can actually be rotated when adjusted. When the flashlight is not in use, the focus adjusting part 1 and the lamp cover 5 may also rotate or twist, thereby increasing friction. In order to prevent this, Figure 2 、 Figure 3 As shown, the top outer side of the lamp cover 5 is provided with a position indicating protrusion 9 ( Figure 2 ), the inner end of the focusing part 1 is provided with a position indicating groove ( Figure 3 ), when matched, the position indicating protrusion 9 and the position indicating groove form a locking position, so that when not in use, the focusing part 1 is retracted and the position indicating protrusion 9 and the position indicating groove are matched, which can prevent relative movement between the focusing part 1 and the lamp cover 5 when not in use.

[0045] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A flashlight with adjustable focal length, comprising a focusing portion and a lamp holder for mounting a light source, characterized in that: The top of the inner cavity of the lamp holder is provided with a second clamping portion for limiting the tail of the light source and a first clamping portion for limiting the head of the light source. The distance between the second clamping portion and the first clamping portion is greater than the width of the light source. The lamp holder also includes an elastic clamping portion for making the light source abut against the first clamping portion.

2. The flashlight with adjustable focus according to claim 1, wherein: It also includes a lamp cover, the inner cavity of the lamp cover fits and wraps the head of the lamp holder, and a locking structure is provided between the tail of the lamp cover and the lamp holder; the top of the lamp cover is provided with a focusing portion for gathering the light of the lamp source, and the focusing portion is funnel-shaped; the innermost side of the focusing portion is coplanar with the innermost side of the first clamping portion, and the elastic clamping portion elastically abuts the light source against the inner ring hole of the focusing portion.

3. The flashlight with adjustable focus according to claim 2, wherein: A focusing piece is provided at the top of the inner cavity of the focusing part, and the focusing piece is arranged coaxially with the light source; the middle part of the inner cavity of the focusing part is connected to the outer wall of the lamp cover, and a damping washer is provided on the outer wall of the lamp cover. The focusing part increases the friction between the focusing part and the lamp cover during relative sliding through the damping washer.

4. The flashlight with adjustable focus as claimed in claim 3, wherein: A limiting portion is provided at the tail of the focusing portion, and a plurality of anti-slip protrusions are equidistantly provided on the outer wall of the lamp holder. The anti-slip protrusions at the top, the tail end surface of the lamp cover and the outer wall of the lamp holder together form a sliding space for limiting the sliding of the limiting portion.

5. The flashlight with adjustable focus as claimed in claim 2, wherein: The locking structure includes a locking portion arranged on the inner side of the rear end of the lamp cover and a locking groove arranged on the outer side of the top of the lamp holder. The locking groove is an L-shaped slot. The locking portion at the rear end of the lamp cover is aligned and inserted into the L-shaped slot and then rotated to lock the lamp cover and the lamp holder.

6. The flashlight with adjustable focus according to claim 5, wherein: A conical groove is provided in the middle of the locking portion, and a conical anti-slip part is provided in the locking groove. When the locking portion is aligned with the L-shaped slot, inserted and rotated, the locking portion interacts with the anti-slip part when passing through the anti-slip part, and then the conical groove and the anti-slip part are fitted and connected.

7. The flashlight with adjustable focus according to claim 1, wherein: The second clamping portion is a circular clamping ring or a plurality of clamping blocks equidistantly distributed along the inner cavity of the lamp holder; the first clamping portion is a circular clamping ring or a plurality of clamping blocks equidistantly distributed along the inner cavity of the lamp holder.

8. The flashlight with adjustable focus according to claim 7, wherein: The elastic clamping portion is an elastic clamping piece integrally formed with the second clamping portion, and an inclination angle is formed between the elastic clamping piece and the second clamping portion. In the initial state, the minimum distance between the elastic clamping piece and the second clamping portion is less than or equal to the width of the lamp source; the lamp holder includes an upper shell and a lower shell that are detachably connected.

9. The flashlight with adjustable focus according to claim 5, wherein: The L-shaped slot is arranged on the inner side of the lamp holder at a position corresponding to the light source, and a through hole is provided at the top of the L-shaped slot. When the locking portion and the L-shaped slot are matched, a heat dissipation gap is formed between the lamp cover and the lamp holder at the position of the L-shaped slot.

10. The flashlight with adjustable focus according to claim 2, wherein: A position indicating protrusion is provided on the outer side of the top end of the lamp cover, and a position indicating groove is provided on the inner tail end of the focusing part. When matched, the position indicating protrusion and the position indicating groove form a locking position; a protective part is provided on the side where the light source is connected to the elastic clamping part, and the protective part is made of rubber material.

Images