Focusing mechanism and focusing lighting flashlight

Abstract

The utility model relates to the technical field of lighting equipment, and provides a focusing mechanism and a focusing lighting flashlight. The focusing mechanism comprises an inner shell, a focusing ring, a first limiting ring and a second limiting part. The inner shell is provided with a limiting protrusion and used for being connected with a light source. The focusing ring is sleeved with the inner shell and used for being connected with a lens. The first limiting part and the second limiting part are both arranged on the focusing ring and are oppositely arranged at intervals in the axial direction of the focusing ring, at least one of the first limiting part and the second limiting part is detachably connected to the focusing ring, and the limiting protrusion is located between the second limiting part and the limiting end face; the focusing ring can move relative to the inner shell in the axial direction of the focusing ring, and the second limiting part and the first limiting part can abut against the limiting protrusions respectively so as to limit axial displacement. According to the focusing mechanism provided by the invention, the structure is simplified on the basis of improving the focusing stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting devices, in particular to a focusing mechanism and a focusing flashlight. BACKGROUND

[0002] As a common portable lighting tool, a flashlight has a wide range of applications in night or low light conditions. In order to meet different light supplementing needs, the flashlight usually needs to have a focusing function, for example, the focusing is mainly achieved by changing the distance between the lens and the light source to achieve different viewing angle lighting effects.

[0003] In the related art, the flashlight can be fixed on other devices, and the vibration of these devices can be transmitted to the flashlight, resulting in insufficient stability of the light source after focusing, which affects the lighting effect. Therefore, in order to ensure the stability of focusing, it is necessary to set the assembly relationship of multiple components, which increases the overall production cost and assembly difficulty; and the more complex the structure is, the more difficult it is to ensure the overall stability. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a focusing mechanism which simplifies the structure on the basis of improving the stability of focusing.

[0005] A focusing mechanism, comprising an inner shell, a focusing ring, a first limiting part and a second limiting part; the inner shell is provided with a limiting protrusion and is used for connecting a light source; the focusing ring is sleeved on the inner shell and is used for connecting a lens; the first limiting part and the second limiting part are both arranged on the focusing ring and are spaced apart along the axial direction of the focusing ring, and at least one of the first limiting part and the second limiting part is detachably connected to the focusing ring, and the limiting protrusion is located between the second limiting part and the first limiting part; wherein the focusing ring can move along the axial direction relative to the inner shell, and the second limiting part and the first limiting part can respectively abut against the limiting protrusion to limit the axial displacement.

[0006] It can be understood that, since the focusing ring is used to connect the lens, the inner shell is used to connect the light source. Therefore, when the focusing ring moves relative to the inner shell, the distance between the lens and the light source can be changed, and the focusing purpose is achieved. In this process, since the first limiting part and the second limiting part are provided on the focusing ring, when the focusing ring moves, the first limiting part and the second limiting part are driven to move synchronously, so that the two can be matched with the limiting protrusions respectively, as the bidirectional limiting of the movement of the focusing ring, to ensure the position stability of the focusing ring after movement, and to improve the problem that the lighting effect is affected due to the instability of the focusing ring. Moreover, such a structure is simple in overall structure, and is more conducive to focusing operation; and the assembly relationship of multiple components does not need to be considered, thereby reducing the overall production cost and assembly difficulty, and further improving the focusing stability. In addition, since at least one of the first limiting part and the second limiting part is detachably connected with the focusing ring, the disassembly and assembly of the inner shell and the focusing ring are more convenient.

[0007] In some embodiments, the focusing ring is capable of rotating around its own axis to move relative to the inner shell along the axial direction of the focusing ring.

[0008] In some embodiments, the focusing ring has an assembly hole for being sleeved on the inner shell, and the first limiting part and the second limiting part are both protruded on the hole wall of the assembly hole.

[0009] In some embodiments, the first limiting part is a limiting end face provided on the hole wall of the assembly hole; and part of the hole wall of the assembly hole is protruded inward along the radial direction of the focusing ring to define the limiting end face.

[0010] In some embodiments, the second limiting part is detachably connected with the hole wall of the assembly hole; and / or, the second limiting part is a stop ring.

[0011] In some embodiments, along the axial direction of the focusing ring, part of the assembly hole between the first limiting part and the second limiting part is provided with a threaded segment; the outer circumferential side of the limiting protrusion is threadedly matched with the threaded segment, and along the axial direction of the focusing ring, the length of the limiting protrusion is less than the length of the threaded segment.

[0012] In some embodiments, along the axial direction of the focusing ring, part of the assembly hole away from the first limiting part is provided with a sealing segment, and a sealing element is arranged between the inner shell and the sealing segment.

[0013] In some embodiments, the focusing ring has a positioning end and an assembly end arranged at intervals along its own axial direction, the positioning end is used to connect the lens, the second limiting part is connected to the assembly end, and the first limiting part is arranged between the positioning end and the second limiting part.

[0014] In some embodiments, along the axial direction of the focusing ring, the second limiting portion is provided with an operation force applying portion on the side away from the first limiting portion.

[0015] The application further provides a focusing flashlight, comprising the focusing mechanism, a light source and a lens as described above, the light source is installed in the inner shell of the focusing mechanism, and the lens is installed in the focusing ring of the focusing mechanism, wherein, along the axial direction of the focusing ring, the focusing ring is movable relative to the inner shell to adjust the distance between the lens and the light source. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] Fig. 1 A sectional view of the abutment between the limiting protrusion and the limiting end face in the focusing mechanism provided by the present application;

[0018] Fig. 2 A sectional view of the abutment between the limiting protrusion and the second limiting portion in the focusing mechanism provided by the present application;

[0019] Fig. 3 A partial exploded view of the focusing flashlight provided by the present application.

[0020] Fig. 100, focusing mechanism; 110, inner shell; 111, limiting protrusion; 112, sealing protrusion; 120, focusing ring; 121, assembly hole; 130, second limiting portion; 131, operation force applying portion; 140, first limiting portion; 151, sealing member; 152, sealing ring; 200, light source; 300, lens; 1101, accommodating cavity; 1201, positioning end; 1202, assembly end; 1211, large-diameter section; 1212, small-diameter section; 1214, threaded section; 1215, sealing section. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a sufficient understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0022] It is to be understood that where the terms specific, "fixed", "connected", or terms such as similar terms used in the description of the specification are used, they can be directly connected, or there can be intermediate components present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms are used for the purpose of explanation only and are not intended to indicate the only orientation of the application.

[0023] In addition, the terms "first", "second", etc. are used herein only to describe various terms distinct from each other. These terms are not intended to imply or suggest relative importance or a specific number of the technical features indicated. Thus, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0024] In the present application, unless otherwise explicitly specified and limited, the first feature "on", "under" the second feature can be the first feature directly contacting the second feature, or the first feature indirectly contacting the second feature through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be the first feature directly above or obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature can be the first feature directly below or obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0025] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0026] Please refer to Figs. 1-3An embodiment of the present application provides a focusing mechanism 100, which comprises an inner shell 110, a focusing ring 120, a first limiting part 140 and a second limiting part 130. The inner shell 110 is provided with a limiting protrusion 111 and is used for connecting a light source 200, the focusing ring 120 is sleeved on the inner shell 110 and is used for connecting a lens 300. The second limiting part 130 and the first limiting part 140 are both arranged on the focusing ring 120 and are oppositely arranged along the axial direction of the focusing ring 120, and at least one of the first limiting part 140 and the second limiting part 130 is detachably connected to the focusing ring 120, and the limiting protrusion 111 is located between the second limiting part 130 and the first limiting part 140. Wherein, the focusing ring 120 can move along the axial direction of the focusing ring 120 relative to the inner shell 110, and the second limiting part 130 and the first limiting part 140 can respectively abut against the limiting protrusion 111 to limit the axial displacement.

[0027] Taking the movement of the focusing ring 120 relative to the inner shell 110 along the axial direction of the focusing ring 120 as an example, the axial direction of the focusing ring 120 is the vertical direction. The first limiting part 140 is located above the second limiting part 130 along the vertical direction. Since the focusing ring 120 is used for connecting the lens 300, and the inner shell 110 is used for connecting the light source 200, when the focusing ring 120 moves relative to the inner shell 110 along the vertical direction, the distance between the lens 300 and the light source 200 along the vertical direction can be changed, so that the focusing purpose is achieved. In this process, since the first limiting part 140 and the second limiting part 130 are arranged on the focusing ring 120, when the focusing ring 120 moves, the first limiting part 140 and the second limiting part 130 are driven to move synchronously. For example, when the focusing ring 120 moves upward along the vertical direction, it is equivalent to that the inner shell 110 moves downward along the vertical direction, and the second limiting part 130 can abut against the lower end surface of the limiting protrusion 111, so as to limit the downward displacement of the inner shell 110 and the upward displacement of the focusing ring 120, thereby avoiding the loosening of the inner shell 110 and the focusing ring 120. Conversely, when the focusing ring 120 moves downward along the vertical direction, it is equivalent to that the inner shell 110 moves upward along the vertical direction, and the first limiting part 140 can abut against the upper end surface of the limiting protrusion 111, so as to limit the upward displacement of the inner shell 110 and the downward displacement of the focusing ring 120, thereby avoiding the loosening of the inner shell 110 and the focusing ring 120. In this way, the stability of the upward and downward movement of the focusing ring 120 can be improved.

[0028] That is, the embodiment provides the cooperation of the first limiting portion 140 and the second limiting portion 130 relative to the limiting protrusion 111 respectively to meet the upper and lower limits during focusing, to ensure the position stability after the movement of the focusing ring 120, and to improve the problem of affecting the illumination effect due to the instability of the focusing ring 120; and the overall structure is simple, which is more conducive to the focusing operation. At the same time, due to such a setting, the assembly relationship of multiple components does not need to be considered, the overall production cost and assembly difficulty are reduced, and the focusing stability is further improved. In addition, due to the detachable connection of at least one of the first limiting portion 140 and the second limiting portion 130 with the focusing ring 120, the inner shell 110 is convenient to disassemble and assemble relative to the focusing ring 120, and the limiting protrusion 111 is ensured to be located between the first limiting portion 140 and the second limiting portion 130.

[0029] Among them, the focusing ring 120 can be moved upward along the vertical direction to increase the distance between the lens 300 and the light source 200, and vice versa.

[0030] In some embodiments, a wear-resistant coating or anti-skid texture can be provided on the contact surfaces of the second limiting portion 130, the first limiting portion 140, and the limiting protrusion 111, to improve the reliability, maintain the stability under extreme conditions, and reduce the risk of slipping. Of course, only the contact surface between the second limiting portion 130 and the limiting protrusion 111 can be provided with a wear-resistant coating or anti-skid texture, or only the contact surface between the first limiting portion 140 and the limiting protrusion 111 can be provided with a wear-resistant coating or anti-skid texture, which is only exemplified here.

[0031] In still other embodiments, the limiting protrusion 111 can be annularly arranged around the inner shell 110 and extend circumferentially; of course, it can also be arc-shaped, and at this time, the limiting protrusion 111 is provided with a plurality of limiting protrusions and is arranged at intervals along the circumference of the inner shell 110. Correspondingly, the first limiting portion 140 and the second limiting portion 130 can also be annular or arc-shaped. As long as it can meet the upward and downward movement of the focusing ring 120 along the vertical direction, which is only exemplified here.

[0032] Further, the limiting protrusion 111 and the first limiting portion 140 are in surface contact, and the limiting protrusion 111 and the second limiting portion 130 are also in surface contact. It can be understood that by using the surface contact setting mode, the contact area is increased, and the limiting stability is further improved to maintain the stability of the focusing ring 120. Of course, the limiting protrusion 111 and the limiting surface can also be in point contact or multiple discontinuous line contact at intervals, and the limiting protrusion 111 and the second limiting portion 130 are the same.

[0033] Please refer to Figs. 1-3In some embodiments, the focusing ring 120 is rotatable about its own axis to move axially relative to the inner housing 110. That is, the user can meet the axial movement relative to the inner housing 110 by rotating the focusing ring 120. For example, the focusing ring 120 is threadedly engaged with the inner housing 110, which further simplifies the structure and is more conducive to production. Alternatively, the focusing ring 120 is engaged with the inner housing 110 by a gear and rack to achieve axial displacement when the focusing ring 120 is rotated. Yet alternatively, the focusing ring 120 can be directly pushed to move vertically relative to the inner housing 110, and after moving into position, it is limited by the groove and convex ball clamping.

[0034] Referring to Figs. 1-3 Optionally, the focusing ring 120 has an assembly hole 121, and the focusing ring 120 is sleeved on the outer side of the inner housing 110 through the assembly hole 121. At this time, the limiting protrusion 111 is protruded on the outer peripheral surface of the inner housing 110, and the first limiting portion 140 and the second limiting portion 130 are both protruded on the hole wall of the assembly hole 121. That is, the inner diameter of each of the first limiting portion 140 and the second limiting portion 130 is smaller than the outer diameter of the limiting protrusion 111, thereby ensuring that the first limiting portion 140 and the second limiting portion 130 can respectively abut against the upper and lower end surfaces of the limiting protrusion 111 to limit the axial movement of the focusing ring 120.

[0035] Alternatively, the inner housing 110 can be sleeved on the outer side of the focusing ring 120. At this time, the focusing ring 120 is provided with a cooperating segment cooperating with the inner housing 110 and an operating segment extending out of the inner housing 110 for user operation. The limiting protrusion 111 is protruded on the inner side wall of the inner housing 110, and the first limiting portion 140 and the second limiting portion 130 are protruded on the cooperating segment. As long as it can meet the adjustment of the distance between the lens 300 and the light source 200 by the focusing ring 120, it is only an example here.

[0036] In some embodiments, the first limiting portion 140 is a limiting end surface provided on the hole wall of the assembly hole 121, and part of the hole wall of the assembly hole 121 is protruded inward along the radial direction of the focusing ring 120 to define the limiting end surface. That is, the first limiting portion 140 is integrally formed with the focusing ring 120, for example, it can be integrally injection molded, machined, etc. Such a setting not only simplifies the structure, but also facilitates processing and manufacturing, while ensuring the stability and reliability of the cooperation between the first limiting portion 140 and the limiting protrusion 111.

[0037] The hole wall of the assembly hole 121 is provided with an annular groove between the first limiting portion 140 and the second limiting portion 130, so as to accommodate the limiting protrusion 111 on the inner shell 110. The limiting protrusion 111 can move in the vertical direction in the groove, and can also guide the movement of the focusing ring 120, so as to reduce the risk of skewing, deviation or shaking of the focusing ring 120 during adjustment, and ensure the lighting effect.

[0038] Please refer to Figs. 1-3 In some embodiments, the assembly hole 121 is provided in the form of a stepped hole, including a large-diameter section 1211 and a small-diameter section 1212 connected to the large-diameter section 1211. The stepped end face between the large-diameter section 1211 and the small-diameter section 1212 serves as the first limiting portion 140. The limiting protrusion 111 cooperates with the large-diameter section 1211, and the second limiting portion 130 is connected to one end of the large-diameter section 1211 away from the first limiting portion 140. The inner shell 110 cooperates with the small-diameter section 1212 at one end of the limiting protrusion 111 away from the second limiting portion 130 in the vertical direction, which can also guide the movement and further reduce the risk of skewing, deviation or shaking of the focusing ring 120.

[0039] Please refer to Figs. 1-3 In actual use, the second limiting portion 130 is detachably connected to the hole wall of the assembly hole 121. Such a design facilitates the disassembly and assembly of the second limiting portion 130 relative to the focusing ring 120, and further facilitates replacement or maintenance. For example, the second limiting portion 130 can be threadedly connected to the focusing ring 120; alternatively, the second limiting portion 130 can be snap-fitted to the focusing ring 120. As long as the second limiting portion 130 can be detachably connected to the focusing ring 120 and the second limiting portion 130 will not easily loosen or fall off during focusing, the design is acceptable.

[0040] For example, the second limiting portion 130 is arranged below the first limiting portion 140 in the vertical direction, the inner shell 110 is inserted into the assembly hole 121 from bottom to top, and then the second limiting portion 130 is fastened relative to the focusing ring 120. Alternatively, the second limiting portion 130 can be arranged above the first limiting portion 140 in the vertical direction, and the inner shell 110 can be assembled from top to bottom.

[0041] Please refer to Figs. 1-3In actual use, the second limiting portion 130 is provided with an operation force applying portion 131 on the side away from the first limiting portion 140 along the axial direction of the focusing ring 120. The operation force applying portion 131 is configured to facilitate the user to act on the second limiting portion 130 with a tool to meet the disassembly of the second limiting portion 130 relative to the focusing ring 120. For example, the operation force applying portion 131 on the second limiting portion 130 can be two opposite and spaced-apart force applying notches, and the user can insert a tool into the two notches to rotate the second limiting portion 130 for disassembly. Alternatively, the operation force applying portion 131 is a force applying protrusion provided on the side of the second limiting portion 130 away from the first limiting portion 140. The force applying protrusion is provided with two and spaced apart along the circumferential direction of the focusing ring 120.

[0042] Referring to Figs. 1-3 In an optional embodiment, the portion of the assembly hole 121 between the first limiting portion 140 and the second limiting portion 130 is provided with a threaded segment 1214 along the axial direction of the focusing ring 120; the outer circumferential side of the limiting protrusion 111 is threadedly connected with the threaded segment 1214, and the length of the limiting protrusion 111 is less than the length of the threaded segment 1214 along the axial direction of the focusing ring 120. Such a configuration can ensure that the limiting protrusion 111 has a certain freely movable stroke within the threaded segment 1214 to meet the adjustment of the distance between the lens 300 and the light source 200. At the same time, the threaded connection of the limiting protrusion 111 and the threaded segment 1214 not only ensures the stable connection between the inner shell 110 and the focusing ring 120, but also ensures the accuracy and reliability of the focusing; and such a configuration does not need to reserve extra space for the assembly between the inner shell 110 and the focusing ring 120. That is, the limiting protrusion 111 is not only used to cooperate with the first limiting portion 140 and the second limiting portion 130 to meet the movement limiting and ensure the stability of the focusing, but also used for the connection between the inner shell 110 and the focusing ring 120 to achieve one thing with multiple uses, further simplifying the structure.

[0043] Alternatively, the inner shell 110 and the limiting protrusion 111 can be threadedly connected with the small-diameter segment 1212 of the assembly hole 121 at the end of the limiting protrusion 111 away from the second limiting portion 130 along the vertical direction.

[0044] Referring to Figs. 1-3 Alternatively, the portion of the assembly hole 121 away from the first limiting portion 140 is provided with a sealing segment 1215 along the axial direction of the focusing ring 120, and a sealing member 151 is arranged between the inner shell 110 and the sealing segment 1215. That is, due to the arrangement of the sealing member 151, the assembly between the inner shell 110 and the focusing ring 120 can be sealed to avoid as much as possible the infiltration of external water vapor, impurities, dust, etc. into the focusing mechanism 100, ensure the cleanliness and dryness inside the focusing mechanism 100, and thus prolong the service life of the focusing mechanism 100.

[0045] The sealing section 1215 is the small-diameter section 1212. The inner shell 110 has a sealing protrusion 112 protruding from the portion of the inner shell 110 away from the second limiting portion 130. The sealing member 151 is arranged between the sealing protrusion 112 and the small-diameter section 1212. This arrangement can limit the contact area between the inner shell 110 and the focusing ring 120 to a certain range, and reduce the wear between the two.

[0046] Further, the focusing ring 120 is arranged outside the inner shell 110. The outer circumferential surface of the inner shell 110 is recessed to form a sealing groove, and the sealing member 151 is arranged in the sealing groove. Specifically, the middle portion of the sealing protrusion 112 is recessed inward along the radial direction of the focusing ring 120 to form a sealing groove. The sealing member 151 is arranged in the sealing groove and protrudes partially from the sealing groove to press against the focusing ring 120, thereby achieving sealing. Alternatively, a ring-shaped sealing member 151 can be arranged on the hole wall corresponding to the small-diameter section 1212, and the sealing protrusion 112 is arranged to press against the sealing member 151 to achieve sealing.

[0047] In actual use, when the lens 300 is installed on the focusing ring 120, the sealing ring 152 is arranged between the lens 300 and the focusing ring 120, further improving the sealing performance.

[0048] Please refer to Figs. 1-3 In some embodiments, the focusing ring 120 has a positioning end 1201 and an assembly end 1202 arranged along the axial direction of the focusing ring 120. The positioning end 1201 is used to connect the lens 300, and the second limiting portion 130 is connected to the assembly end 1202. The first limiting portion 140 is arranged between the positioning end 1201 and the second limiting portion 130. It can be understood that the positioning end 1201 is one end of the focusing ring 120 used to fix the lens 300 in the vertical direction, and the assembly end 1202 is one end of the focusing ring 120 used to assemble the inner shell 110 and the second limiting portion 130 into the assembly hole 121. The assembly end 1202 is provided with a structure for fastening with the second limiting portion 130 to improve the connection reliability of the second limiting portion 130 and the focusing ring 120. This design allows the focusing ring 120 to achieve accurate focal length adjustment during focusing and ensure the stability and durability of the structure.

[0049] Optionally, the end of the inner shell 110 away from the positioning end 1201 protrudes from the second limiting portion 130 for connecting other structures. The difference between the inner diameter of the second limiting portion 130 and the outer diameter of the corresponding portion of the inner shell 110 is small, so as to guide the movement of the focusing ring 120, reduce the risk of lens 300 or light source 200 shaking, and improve the stability.

[0050] Please refer to Figs. 1-3 Figs. 1-3The application further provides a focusing flashlight, which comprises the focusing mechanism 100, the light source 200 and the lens 300, the light source 200 is installed on the inner shell 110 of the focusing mechanism 100, the lens 300 is installed on the focusing ring 120 of the focusing mechanism 100, and the focusing ring 120 can move relative to the inner shell 110 along the axial direction of the focusing ring 120 to adjust the distance between the lens 300 and the light source 200.

[0051] The inner shell 110 is provided with a containing cavity 1101 for installing the light source 200. The focusing ring 120 is provided with a clamping groove at the positioning end 1201 for cooperating with the lens 300. A sealing ring 152 is arranged between the lens 300 and the focusing ring 120 to improve the sealing performance. The containing cavity 1101 of the inner shell 110 can also be used for installing a battery, a circuit board and other structures to be electrically connected with the light source 200 to supply the light source 200 with electric energy. The inner shell 110 is further provided with a button switch electrically connected with the circuit board to control the opening and closing of the light source 200, the brightness adjustment and the like.

[0052] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that they are within the scope of the present application.

[0053] The above-described embodiments only express several implementation manners of the application, the description is relatively specific and detailed, however, it should not be understood as the limitation of the patent application scope. It should be pointed out that, for the ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A focusing mechanism, characterized by, The focusing mechanism (100) comprises: an inner shell (110) provided with a limiting protrusion (111) and configured to connect a light source (200); a focusing ring (120) sleeved on the inner shell (110) and configured to connect a lens (300); The focusing mechanism (100) further comprises a first limiting portion (140) and a second limiting portion (130), both of which are arranged on the focusing ring (120) and are opposite and spaced along the axial direction of the focusing ring (120), and at least one of the first limiting portion (140) and the second limiting portion (130) is detachably connected to the focusing ring (120), and the limiting protrusion (111) is located between the second limiting portion (130) and the first limiting portion (140). The focusing ring (120) can move along its own axial direction relative to the inner shell (110), and the second limiting portion (130) and the first limiting portion (140) can respectively abut against the limiting protrusion (111) to limit the axial displacement.

2. The focusing mechanism of claim 1, wherein The focusing ring (120) can rotate around its own axis to move along the axial direction of the focusing ring (120) relative to the inner shell (110).

3. The focusing mechanism of claim 1, wherein The focusing ring (120) has an assembly hole (121) for sleeving on the inner shell (110), and the first limiting portion (140) and the second limiting portion (130) are both protruded on the hole wall of the assembly hole (121).

4. The focusing mechanism of claim 3, wherein The first limiting portion (140) is a limiting end face provided on the hole wall of the assembly hole (121). Part of the hole wall of the assembly hole (121) protrudes inward along the radial direction of the focusing ring (120) to define the limiting end face.

5. A focusing mechanism according to claim 3 or 4, characterised in that, The second limiting portion (130) is detachably connected with the hole wall of the assembly hole (121); and / or, the second limiting portion (130) is a stop ring.

6. The focusing mechanism of claim 3, wherein Along the axial direction of the focusing ring (120), a threaded segment (1214) is provided between the first limiting portion (140) and the second limiting portion (130) of the assembly hole (121); The outer circumferential side of the limiting protrusion (111) is threadedly connected with the threaded segment (1214), and along the axial direction of the focusing ring (120), the length of the limiting protrusion (111) is less than the length of the threaded segment (1214).

7. The focusing mechanism of claim 3, wherein Along the axial direction of the focusing ring (120), a sealing segment (1215) is provided on the portion of the assembly hole (121) away from the first limiting portion (140), and a sealing member (151) is provided between the inner shell (110) and the sealing segment (1215).

8. The focusing mechanism of claim 1, wherein, The focusing ring (120) has a positioning end (1201) and an assembly end (1202) arranged along its own axial direction, the positioning end (1201) is configured to connect a lens (300), the second limiting portion (130) is connected to the assembly end (1202), and the first limiting portion (140) is arranged between the positioning end (1201) and the second limiting portion (130).

9. The focusing mechanism of claim 1, wherein, An operating force applying part (131) is arranged on the side of the second limiting part (130) away from the first limiting part (140) along the axial direction of the focusing ring (120).

10. A focusing flashlight, characterized in that, The application further discloses a focusing mechanism and a camera. The focusing mechanism according to any one of claims 1-9; A light source (200) is arranged in the inner shell (110) of the focusing mechanism (100). A lens (300) is arranged in the focusing ring (120) of the focusing mechanism (100). The focusing ring (120) is movable relative to the inner shell (110) along the axial direction of the focusing ring (120) to adjust the distance between the lens (300) and the light source (200).

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