A lens barrel extension ring and adapter with a quick lock assembly

Abstract

The utility model provides a lens barrel extension ring with a quick lock assembly and an adapter device. A lens barrel extension ring with a quick lock assembly includes a body and a quick lock assembly. The body has an inner side surface, the inner side surface includes an assembly space, and the assembly space is arranged along the circumference of the inner side surface, and the assembly space is used to assemble the clamping part of the lens barrel. The quick lock assembly includes a locking member, which is arranged on the inner side surface, and the locking member can move along the radial cross section to enter or leave the assembly space; when the locking member moves to the assembly space along the radial cross section, the locking member can enter the locking position of the clamping part of the lens barrel to lock the lens barrel; or, when the locking member moves along the radial cross section to leave the assembly space, the locking member can leave the locking position of the clamping part of the lens barrel to unlock the lens barrel. The quick lock assembly of the present application is particularly suitable for a lens barrel extension ring with a thickness of 10-20 mm, and can realize the quick lock assembly of the lens barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of camera equipment, in particular to a lens barrel extension ring with a quick lock component and a switching device. Background Art

[0002] When taking underwater photos, the camera, camera head and lens are usually placed in a special waterproof housing (commonly known as a camera waterproof housing). A special opening or interface is designed at the front end of the camera waterproof housing for installing an extension ring or lens barrel to protect the lens. The extension ring and lens barrel are usually hollow cylindrical pieces, and the front end of the lens barrel is sealed and connected to a flat lens or a spherical lens, which not only protects the lens but also meets the optical performance requirements of the lens framing. Underwater photographers need to match extension rings of specific lengths and lens barrels of different specifications according to the external dimensions and optical characteristics of the selected lens (such as the angle of view, the closest focusing distance, etc.). Therefore, it becomes very important to quickly assemble, seal and lock extension rings of different lengths, or between extension rings and lens barrels, to prevent accidental falling off during use.

[0003] Patent CN218383612U discloses a transfer device, which can firmly lock the lens barrel and other parts on the transfer device by using the cooperation of the axial locking protrusion and the transfer sleeve, effectively preventing the parts from loosening and separating. At the same time, by using the meshing connection relationship between the transmission member and the locking ring, the position of the locking ring can be adjusted from the outside of the device with the help of the operating member, so as to quickly and labor-savingly complete the locking or disassembly between the parts, and realize the quick release or quick lock between the related parts. Since the locking ring, transmission member and operating member are precise and complex in structure and require a certain internal installation space, they are generally only suitable for transfer devices with a thickness of 20 mm or more. Patent CN208239704U discloses a lens barrel extension ring with a quick lock device, which is arranged inside the extension ring body, and the self-locking block is restricted to extend or retract into the self-locking seat by the limit assembly, so as to achieve the effect of quick locking and unlocking. Similarly, in this patent, since the self-locking block needs to extend or retract into the locking hole of the self-locking device seat to achieve the locking and unlocking of the lens barrel, there is a requirement for the thickness of the extension ring in the extension or retraction direction, and the thickness of the extension ring is usually required to be 20mm or more. However, there is no suitable quick locking device for the extension ring with a thickness between 10-20mm. Therefore, a quick locking device suitable for the extension ring with a thickness of 10-20mm is urgently needed. Utility Model Content

[0004] The present application provides a lens barrel extension ring with a quick lock assembly and a switching device. The quick lock assembly is particularly suitable for a lens barrel extension ring with a thickness of 10-20 mm and can realize quick lock assembly of the lens barrel.

[0005] According to the first aspect of the present application, an embodiment provides a lens barrel extension ring with a quick lock assembly, comprising:

[0006] The body has an inner side surface; the inner side surface includes an assembly space, and the assembly space is arranged along the circumference of the inner side surface, and the assembly space is used to assemble the clamping portion of the lens barrel;

[0007] The quick lock assembly includes a locking member, which is arranged on the inner side surface and can move along a radial cross section to enter or leave an assembly space; when the locking member moves along the radial cross section to the assembly space, the locking member can enter the locking position of the lens barrel clamping portion to lock the lens barrel; or, when the locking member moves along the radial cross section to leave the assembly space, the locking member can leave the locking position of the lens barrel clamping portion to unlock the lens barrel.

[0008] Further, the locking member includes a first end and a second end, the first end is rotatably arranged on the inner side surface, and the second end is provided with a first limiting member;

[0009] The quick lock assembly also includes a pressing piece, which is arranged on the inner side and is arranged opposite to the locking piece. The end of the pressing piece close to the second end has a second limiting portion, and the second limiting portion cooperates with the first limiting portion to lock the locking piece in the locking position of the lens barrel.

[0010] Furthermore, the quick lock assembly also includes a rotating part and a torsion spring, the rotating part is arranged on the inner side surface, and the rotating part is passed through the first end; the torsion spring is sleeved on the rotating part, and one end of the torsion spring abuts against the inner side surface, and the other end abuts against the locking part to push the second end of the locking part to move along the radial section to leave the assembly space.

[0011] Furthermore, the second end has a mounting hole, and the first limiting member is disposed through the mounting hole and can move along the axial direction of the mounting hole;

[0012] The pressing member includes a fixing seat and a button. The fixing seat is arranged on the inner side surface, and the fixing seat has a second limiting portion, the second limiting portion is a second limiting groove, and the second limiting groove is used for inserting the first limiting member; the button is arranged inside the fixing seat and can move axially along the fixing seat to push the first limiting member out of the second limiting groove so that the second end of the locking member can leave the assembly space.

[0013] Furthermore, the mounting hole has a mounting step, and the first limiting member has a supporting step; a first spring is sleeved on the outer peripheral side of the first limiting member, and one end of the first spring is against the mounting step, and the other end is against the supporting step, and the first spring has a restoring force for pushing the first limiting member into the second limiting groove;

[0014] And, a first blocking member is provided at one end of the first limiting member away from the pressing member, and the first blocking member is provided outside the mounting hole to prevent the first limiting member from being separated from the mounting hole.

[0015] Furthermore, the fixing seat has a receiving groove, a second limiting groove is arranged at the bottom of the receiving groove, and the second limiting groove passes through the bottom of the receiving groove; the button is arranged in the receiving groove, and a second spring is arranged at the bottom of the receiving groove, one end of the second spring is connected to the bottom of the receiving groove, and the other end resists the button, and the second spring has a restoring force to push the button to move away from the bottom of the receiving groove.

[0016] Furthermore, the pressing member also includes a second limiting member, and a mounting hole is also provided at the bottom of the accommodating groove; the button has a mounting portion, which is movably disposed in the mounting hole, and the second limiting member is disposed on the mounting portion, and is at least partially located outside the mounting hole, for supporting the bottom of the accommodating cavity to prevent the button from detaching from the accommodating groove.

[0017] Furthermore, a plurality of first limiting protrusions are provided on the lens barrel extension ring, and the plurality of first limiting protrusions are arranged at intervals. The first limiting protrusions are used to abut against the second limiting protrusions of the lens barrel to accurately position the locking member to the locking position of the lens barrel.

[0018] According to the second aspect of the present application, an adapter device is provided in an embodiment, comprising the lens barrel extension ring and the lens barrel of the first aspect, the lens barrel comprising a clamping portion, and the clamping portion is arranged along the circumference of the lens barrel, and the clamping portion is clamped in the assembly space of the lens barrel extension ring; the clamping portion has a locking position, and the locking position is used to cooperate with the locking piece to lock the lens barrel extension ring with the locking piece.

[0019] Further, the locking position is a locking notch, and the locking notch is used to accommodate the locking member;

[0020] Alternatively, the clamping portion is further provided with a plurality of second limiting protrusions, which are spaced apart on the clamping portion, and the second limiting protrusions are used to abut against the first limiting protrusions of the lens barrel extension ring to position the lens barrel extension ring in the locked position.

[0021] The utility model provides a lens barrel extension ring with a quick lock assembly, comprising a body and a quick lock assembly. The body has an inner side surface, the inner side surface comprises an assembly space, and the assembly space is arranged along the circumference of the inner side surface, and the assembly space is used to assemble the clamping part of the lens barrel. The locking member in the quick lock assembly is arranged on the inner side surface, and the locking member can move along the radial cross section to enter or leave the assembly space, so as to achieve the locking or unlocking of the lens barrel. The locking member in the present application moves along the radial direction of the extension ring to achieve the purpose of unlocking the lens barrel and the extension ring, and the movement of the locking member no longer limits the size of the lens barrel extension ring in the axial direction, and the size of the lens barrel extension ring can be set more flexibly, not only limited to the thickness of the extension ring in the axial direction being greater than 20mm. In addition, the quick lock assembly of the present application can also achieve the rapid assembly and locking of the lens barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a structural schematic diagram of a lens barrel extension ring with a quick lock assembly in an embodiment of the utility model;

[0023] Figure 2 for Figure 1 An exploded diagram of the lens barrel extension ring;

[0024] Figure 3 for Figure 1 A cross-sectional view of the lens barrel extension ring shown;

[0025] Figure 4 It is a schematic diagram of the structure of the lens barrel in the embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the switching device in the embodiment of the utility model;

[0027] Figure 6 It is a cross-sectional view of the adapter in the embodiment of the utility model.

[0028] Reference numerals: lens barrel extension ring 1000, body 1100, inner side 1110, assembly space 1111, first limiting ridge 11111, first limiting protrusion 1120, first marking point 1130, second marking point 1140; quick lock assembly 1200, locking member 1210, first limiting member 1211, abutting step 12111, mounting hole 1212, mounting step 12121, first spring 1213, first blocking member 1214; pressing member 1220, fixing seat 1221 , the second limiting portion -12211, the accommodating groove -12212, the notch -122121, the mounting through hole -122122, the button -1222, the mounting portion -12221, the second spring -1223, the second limiting member -1224, the screw -12241, the gasket -12242; the rotating member -1230, the torsion spring -1240; the lens barrel -2000, the clamping portion -2100, the locking position -2110, the second limiting protrusion -2120, the third limiting groove -2130, the third marking point -2140, the sealing groove -2150. DETAILED DESCRIPTION

[0029] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0030] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0031] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0032] Please refer to Figure 1-6 An embodiment of the utility model provides a lens barrel extension ring 1000 with a quick lock assembly 1200 . The lens barrel extension ring 1000 includes a body 1100 and a quick lock assembly 1200 .

[0033] Please refer to Figure 1-4 The body 1100 has an inner side surface 1110. The inner side surface 1110 includes an assembly space 1111, and the assembly space 1111 is arranged along the circumference of the inner side surface 1110, and the assembly space 1111 is used to assemble the clamping portion 2100 of the lens barrel 2000. The quick lock assembly 1200 includes a locking member 1210, which is arranged on the inner side surface 1110, and the locking member 1210 can move along the radial section to enter or leave the assembly space 1111. When the locking member 1210 moves along the radial cross-section to the assembly space 1111, the locking member 1210 can enter the locking position 2110 of the clamping portion 2100 of the lens barrel 2000 to lock the lens barrel 2000, or, when the locking member 1210 moves along the radial cross-section to leave the assembly space 1111, the locking member 1210 can leave the locking position 2110 of the clamping portion 2100 of the lens barrel 2000 to unlock the lens barrel 2000.

[0034] In the embodiment of the utility model, the locking member 1210 is disposed on the inner side surface 1110 of the body 1100, and the locking member 1210 moves along the radial section of the lens barrel extension ring 1000, so as to achieve the purpose of entering or leaving the assembly space 1111. With such a design, the thickness design of the lens barrel extension ring 1000 in the axial direction is more flexible, and the thickness of the extension ring is no longer required to be more than 20 mm.

[0035] In this embodiment, please refer to Figure 1 and Figure 3 The locking member 1210 includes a first end and a second end, the first end is rotatably disposed on the inner side surface 1110, and the second end is provided with a first limiting member 1211. The quick lock assembly 1200 also includes a pressing member 1220, the pressing member 1220 is disposed on the inner side surface 1110, and the pressing member 1220 and the locking member 1210 are disposed opposite to each other, and the pressing member 1220 has a second limiting portion 12211 at one end close to the second end, and the second limiting portion 12211 cooperates with the first limiting member 1211 to lock the locking member 1210 at the locking position 2110 of the lens barrel 2000.

[0036] The cooperation and limitation of the first limiting member 1211 and the second limiting portion 12211 can conveniently fix and lock the locking member 1210 at the locking position 2110 of the lens barrel 2000, thereby preventing the lens barrel 2000 from being separated from the lens barrel extension ring 1000 during use.

[0037] Please refer to Figure 2-3 The quick lock assembly 1200 also includes a rotating member 1230 and a torsion spring 1240. The rotating member 1230 is arranged on the inner side surface 1110, and the rotating member 1230 is penetrated at the first end. The torsion spring 1240 is sleeved on the rotating member 1230, and one end of the torsion spring 1240 abuts against the inner side surface 1110, and the other end abuts against the locking member 1210 to push the second end of the locking member 1210 to move along the radial section to leave the assembly space 1111.

[0038] When the first limiting member 1211 is unlocked from the second limiting portion 12211 , the locking member 1210 can automatically leave the assembly space 1111 under the thrust of the torsion spring 1240 , and then leave the locking position 2110 of the lens barrel 2000 , without manual manipulation, which is convenient to use.

[0039] Please refer to Figure 2-3The second end of the locking member 1210 has a mounting hole 1212, and the first limiting member 1211 is disposed in the mounting hole 1212 and can move along the axial direction of the mounting hole 1212. The pressing member 1220 includes a fixing seat 1221 and a button 1222. The fixing seat 1221 is disposed on the inner side surface 1110, and the fixing seat 1221 has a second limiting portion 12211, and the second limiting portion 12211 is a second limiting groove, and the second limiting groove is used for the first limiting member 1211 to be inserted, so as to fix the locking member 1210 in the assembly space 1111. The button 1222 is disposed inside the fixing seat 1221, and can move along the axial direction of the fixing seat 1221, so as to push the first limiting member 1211 out of the second limiting groove, so that the second end of the locking member 1210 can leave the assembly space 1111.

[0040] The first limiting member 1211 can move axially along the mounting hole 1212, and the first limiting member 1211 can be pushed away from the second limiting groove by pressing the button 1222, thereby further unlocking the locking member 1210, so that the locking member 1210 can leave the assembly space 1111, and finally unlock the lens barrel 2000. The structural design is relatively simple.

[0041] Please refer to Figure 3 , the mounting hole 1212 has a mounting step 12121, and the first limiting member 1211 has a supporting step 12111. The outer peripheral side of the first limiting member 1211 is sleeved with a first spring 1213, and one end of the first spring 1213 is against the mounting step 12121, and the other end is against the supporting step 12111. The first spring 1213 has an elastic restoring force, which is used to push the first limiting member 1211 into the second limiting groove. The end of the first limiting member 1211 away from the pressing member 1220 is provided with a first blocking member 1214, and the first blocking member 1214 is arranged outside the mounting hole 1212, and is used to prevent the first limiting member 1211 from being separated from the mounting hole 1212. Specifically, the first blocking member 1214 is a retaining spring.

[0042] The provision of the first spring 1213 can ensure that the first limiting member 1211 can move axially relatively freely in the mounting hole 1212. In the process of rotating the locking member 1210 to the assembly space 1111, the first limiting member 1211 can first move in the direction away from the fixing seat 1221 under the push of the fixing seat 1221. When the mounting hole 1212 is facing the second limiting groove, there is no need to manually push the first limiting member 1211. Under the thrust of the first spring 1213, the first limiting member 1211 can enter the second limiting groove. In addition, the first blocking member 1214 is provided on the side of the first limiting member 1211 away from the fixing seat 1221 and is located outside the mounting hole 1212, which is conducive to preventing the first limiting member 1211 from falling from the opening of the mounting hole 1212 away from the first blocking member 1214.

[0043] Please refer to Figure 3 The fixing seat 1221 has a receiving groove 12212, and a second limiting groove is provided at the bottom of the receiving groove 12212, and the second limiting groove runs through the bottom of the receiving groove 12212. The button 1222 is provided in the receiving groove 12212, and a second spring 1223 is provided at the bottom of the receiving groove 12212, one end of the second spring 1223 is connected to the bottom of the receiving groove 12212, and the other end abuts against the button 1222, and the second spring 1223 has a restoring force to push the button 1222 to move away from the bottom of the receiving groove 12212. Specifically, the receiving groove 12212 also includes a notch 122121, and the notch 122121 is arranged opposite to the bottom of the receiving groove 12212, the bottom of the receiving groove 12212 is arranged close to the second end of the locking member 1210, and the notch 122121 is arranged away from the second end of the locking member 1210.

[0044] The button 1222 is arranged in the receiving groove 12212, and the second limiting groove is arranged through the bottom of the receiving groove 12212. In this way, it is convenient to arrange the button 1222 in the fixing seat 1221, and it is also convenient for the button 1222 to push the first limiting member 1211 to leave the second limiting groove. In addition, the arrangement of the second spring 1223 can make the button 1222 automatically reset.

[0045] Please refer to Figure 1 and Figure 3 The pressing member 1220 further includes a second stopper 1224, and a mounting through hole 122122 is further provided at the bottom of the receiving groove 12212. The button 1222 has a mounting portion 12221, and the mounting portion 12221 is movably provided in the mounting through hole 122122. The second stopper 1224 is provided at the mounting portion 12221, and at least partially located outside the mounting through hole 122122, and is used to abut against the bottom of the receiving groove 12212 to prevent the button 1222 from escaping from the receiving groove 12212. Specifically, the second stopper 1224 includes a screw 12241 and a gasket 12242, the screw 12241 is inserted into the mounting portion 12221 of the button 1222, the gasket 12242 is sleeved around the screw 12241, and the gasket 12242 is located outside the mounting through hole 122122, and is used to abut against the bottom of the receiving groove 12212.

[0046] The second limiting member 1224 can, on the one hand, set the button 1222 on the fixing seat 1221; on the other hand, since the portion of the second limiting member 1224 outside the mounting through hole 122122 can abut against the outer side of the bottom of the accommodating groove 12212, even if the groove 122121 is set downward, it can be ensured that the button 1222 will not fall from the groove 122121.

[0047] Please refer to Figure 5A plurality of first limiting protrusions 1120 are also provided on the lens barrel extension ring 1000 , and the plurality of first limiting protrusions 1120 are arranged at intervals. The first limiting protrusions 1120 are used to abut against the second limiting protrusions 2120 of the lens barrel 2000 to accurately position the locking member 1210 to the locking position 2110 of the lens barrel 2000 .

[0048] The first limiting protrusion 1120 facilitates fixing the lens barrel 2000 on the lens barrel extension ring 1000 more stably, prevents the lens barrel 2000 and the lens barrel extension ring 1000 from sliding relative to each other, and is also more conducive to positioning the locking member 1210 at the locking position 2110 of the lens barrel 2000.

[0049] Specifically, in the present invention, the distance between any two adjacent first limiting protrusions 1120 is equal, because the quick lock assembly 1200 and multiple first limiting protrusions 1120 are arranged at fixed positions on the inner side surface 1110, and the second limiting protrusion 2120 is also arranged at a fixed position of the lens barrel 2000. The clamping portion 2100 of the lens barrel 2000 needs to be clamped into the assembly space 1111 at a specific position to realize the installation of the lens barrel 2000. In order to facilitate the installation of the clamping portion 2100 of the lens barrel 2000 in the assembly space 1111 of the lens barrel extension ring 1000, marking points are provided on the lens barrel 2000 and the lens barrel extension ring 1000, including a first marking point 1130 and a second marking point 1140 on the lens barrel extension ring 1000, and the lens barrel 2000 includes a third marking point 2140. The first marking point 1130 corresponds to one of the first limiting protrusions 1120, and the second marking point 1140 corresponds to a groove between two adjacent first limiting protrusions 1120, and the groove is arranged adjacent to the first limiting protrusion 1120 corresponding to the first marking point 1130. The distance between the first marking point 1130 and the second marking point 1140 is the spacing between two adjacent first limiting protrusions 1120. When the lens barrel 2000 is to be installed on the lens barrel extension ring 1000, the first marking point 1130 is aligned with the third marking point 2140, and then the lens barrel 2000 is rotated to align the second marking point 1140 with the third marking point 2140. At this time, the first limiting protrusion 1120 of the lens barrel extension ring 1000 is in conflict with the second limiting protrusion 2120, and the locking member 1210 is also correspondingly positioned at the locking position 2110 of the clamping portion 2100 of the lens barrel 2000. The locking member 1210 can be pushed into the locking position 2110 to lock the lens barrel 2000 on the lens barrel extension ring 1000. More specifically, the spacing between two adjacent second limiting protrusions 2120 is greater than the spacing between two adjacent first limiting protrusions 1120, which facilitates the rotation of the lens barrel 2000. When the clamping portion 2100 of the lens barrel 2000 is inserted into the assembly space 1111, the two sides of the first limiting protrusion 1120 are two adjacent second limiting protrusions 2120 of the lens barrel 2000.

[0050] In addition, a first limiting ridge 11111 is further provided in the assembly space 1111 of the lens barrel extension ring 1000, and the clamping portion 2100 of the lens barrel 2000 has a third limiting groove 2130. It should be noted that in order to clamp the first limiting ridge 11111 into the third limiting groove 2130, the first limiting ridge 11111 can be evenly spaced in the same radial cross section of the assembly space 1111, please refer to Figure 4 The second limiting protrusions 2120 of the lens barrel are also arranged at even intervals, so that the first limiting ridge 11111 is conveniently pushed into the third limiting groove 2130 first. After the first mark point 1130 is aligned with the third mark point 2140, the lens barrel 2000 is rotated to align the second mark point 1140 with the third mark point 2140. At this time, the first limiting ridge 11111 is axially abutted against the second limiting ridge 2120, that is, the first limiting ridge 11111 is axially locked in the third limiting groove 2130, and the lens barrel 2000 is further clamped into the lens barrel extension ring 1000. In addition, the clamping portion 2100 of the lens barrel 2000 also has a sealing groove 2150, and a water-sealing ring is sleeved in the sealing groove 2140 to prevent water from entering the lens barrel 2000.

[0051] The lens barrel extension ring 1000 provided by the utility model has a simple structure and can realize the rapid disassembly and installation of the lens barrel.

[0052] Please refer to Figure 5-6 Another embodiment of the utility model further provides a conversion device, which includes a lens barrel 2000 and the aforementioned lens barrel extension ring 1000, the lens barrel 2000 includes a clamping portion 2100, and the clamping portion 2100 is arranged along the circumference of the lens barrel 2000, the clamping portion 2100 is clamped with the assembly space 1111 of the lens barrel extension ring 1000, the clamping portion 2100 has a locking position 2110, and the locking position 2110 is used to cooperate with the locking member 1210 to lock the lens barrel 2000 extension ring 1000 with the locking member 1210.

[0053] The adapter device of the utility model is used for installing a waterproof housing. When underwater photography is required, a camera, a video camera or a lens can be placed in the waterproof housing, which can protect the lens and meet the optical performance requirements of the lens framing.

[0054] Please refer to Figure 4 The locking position 2110 is a locking notch, and the locking notch is used to accommodate the locking member 1210.

[0055] The locking notch on the lens barrel 2000 facilitates the locking member 1210 on the lens barrel extension ring 1000 to be snapped in, so as to lock the lens barrel 2000 on the lens barrel extension ring 1000 .

[0056] Please refer to Figure 4The clamping portion 2100 of the lens barrel 2000 is also provided with a second limiting protrusion 2120, and a plurality of second limiting protrusions 2120 are arranged at intervals on the clamping portion 2100, and the second limiting protrusions 2120 are used to abut against the first limiting protrusion 1120 of the lens barrel extension ring 1000 to position the lens barrel extension ring 1000 at the locking position 2110.

[0057] The second limiting protrusion 2120 is disposed to be in contact with the first limiting protrusion 1120 of the lens barrel extension ring 1000 , so as to position the locking member 1210 at the locking position 2110 of the lens barrel 2000 .

[0058] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A lens barrel extension ring with a quick lock assembly, characterized in that: include: The body has an inner side surface; the inner side surface includes an assembly space, and the assembly space is arranged along the circumference of the inner side surface, and the assembly space is used to assemble the clamping portion of the lens barrel; A quick lock assembly, comprising a locking member, wherein the locking member is disposed on the inner side surface and can move along a radial cross section to enter or leave the assembly space; When the locking member moves along the radial cross-section to the assembly space, the locking member can enter the locking position of the lens barrel clamping portion to lock the lens barrel; or, when the locking member moves along the radial cross-section to leave the assembly space, the locking member can leave the locking position of the lens barrel clamping portion to unlock the lens barrel.

2. The lens barrel extension ring according to claim 1, characterized in that: The locking member comprises a first end and a second end, the first end is rotatably disposed on the inner side surface, and the second end is provided with a first limiting member; The quick lock assembly also includes a pressing piece, which is arranged on the inner side surface and is arranged opposite to the locking piece. The pressing piece has a second limiting portion at one end close to the second end, and the second limiting portion cooperates with the first limiting piece to lock the locking piece in the locking position of the lens barrel.

3. The lens barrel extension ring according to claim 2, characterized in that: The quick lock assembly also includes a rotating member and a torsion spring, wherein the rotating member is arranged on the inner side surface and the rotating member is passed through the first end; the torsion spring is sleeved on the rotating member, and one end of the torsion spring abuts against the inner side surface, and the other end abuts against the locking member to push the second end of the locking member to move along the radial section to leave the assembly space.

4. The lens barrel extension ring according to claim 2, characterized in that: The second end has a mounting hole, and the first limiting member is disposed through the mounting hole and can move along the axial direction of the mounting hole; The pressing member includes a fixing seat and a button, the fixing seat is arranged on the inner side surface, and the fixing seat has a second limiting portion, the second limiting portion is a second limiting groove, and the second limiting groove is used for inserting the first limiting member; the button is arranged inside the fixing seat and can move axially along the fixing seat to push the first limiting member out of the second limiting groove so that the second end of the locking member can leave the assembly space.

5. The lens barrel extension ring according to claim 4, characterized in that: The mounting hole has a mounting step, and the first limiting member has a supporting step; a first spring is sleeved on the outer peripheral side of the first limiting member, and one end of the first spring supports the mounting step, and the other end supports the supporting step, and the first spring has a restoring force for pushing the first limiting member into the second limiting groove; And, a first blocking member is provided at one end of the first limiting member away from the pressing member, and the first blocking member is provided outside the mounting hole to prevent the first limiting member from being separated from the mounting hole.

6. The lens barrel extension ring according to claim 4, characterized in that: The fixing seat has a receiving groove, the bottom of the receiving groove is provided with a second limiting groove, and the second limiting groove runs through the bottom of the receiving groove; The button is arranged in the accommodating groove, and a second spring is arranged at the bottom of the accommodating groove, one end of the second spring is connected to the bottom of the accommodating groove, and the other end abuts against the button, and the second spring has a restoring force to push the button to move away from the bottom of the accommodating groove.

7. The lens barrel extension ring according to claim 6, characterized in that: The pressing member also includes a second limiting member, and a mounting hole is further provided at the bottom of the accommodating groove; the button has a mounting portion, and the mounting portion is movably disposed in the mounting hole, and the second limiting member is disposed on the mounting portion and is at least partially located outside the mounting hole, for supporting the bottom of the accommodating groove to prevent the button from detaching from the accommodating groove.

8. The lens barrel extension ring according to claim 1, characterized in that: The lens barrel extension ring is also provided with a plurality of first limiting protrusions, which are arranged at intervals, and the first limiting protrusions are used to abut against the second limiting protrusions of the lens barrel to accurately position the locking member to the locking position of the lens barrel.

9. A switching device, characterized in that: It comprises a lens barrel extension ring and a lens barrel as described in any one of claims 1 to 8; the lens barrel comprises a clamping portion, and the clamping portion is arranged along the circumference of the lens barrel, and the clamping portion is clamped in the assembly space of the lens barrel extension ring; the clamping portion has a locking position, and the locking position is used to cooperate with the locking piece to lock the lens barrel extension ring with the locking piece.

10. The switching device according to claim 9, characterized in that: The locking position is a locking notch, and the locking notch is used to accommodate the locking member; Alternatively, the clamping portion is further provided with a plurality of second limiting protrusions, which are spaced apart on the clamping portion, and the second limiting protrusions are used to abut against the first limiting protrusion of the lens barrel extension ring to position the lens barrel extension ring at the locking position.

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