Auxiliary focusing device

Abstract

The embodiment of the utility model discloses an auxiliary focusing device, relates to the technical field of auxiliary equipment, and aims to conveniently fix the auxiliary focusing device on imaging equipment. The auxiliary focusing device is applied to imaging equipment with a focusing lens, and comprises a first arc-shaped holding section, a second arc-shaped holding section and a third arc-shaped holding section, a locking groove is formed in the first end of the second arc-shaped holding section; the lock catch is hinged to the connecting part of the first end of the first arc-shaped holding section; the handle is arranged on the first arc-shaped holding section or the second arc-shaped holding section; when the auxiliary focusing device is installed on a focusing driving part of a focusing lens of the imaging equipment, the locking part on the lock catch is clamped into the locking groove, so that the first arc-shaped holding section and the second arc-shaped holding section hold the focusing driving part of the focusing lens of the imaging equipment. The method and the device are suitable for focusing the imaging equipment.

Description

Technical Field

[0001] This application relates to the field of auxiliary equipment technology, and in particular to an auxiliary focusing device. Background Technology

[0002] The image quality of imaging devices with focusing lenses is affected by the lens itself. To improve the image quality, focusing is usually achieved by adjusting the distance between the lens and the subject. In existing technology, to facilitate focusing, an auxiliary focusing device is installed on the lens. Specifically, this auxiliary focusing device is secured with screws to hold the lens firmly, and then the imaging device is focused using the auxiliary focusing device. However, using screws to secure the auxiliary focusing device to hold the lens is rather cumbersome. Utility Model Content

[0003] In view of this, embodiments of this application provide an auxiliary focusing device that can be easily fixed to an imaging device.

[0004] This application provides an auxiliary focusing device applied to an imaging device with a focusing lens, comprising: a first arc-shaped clamping section, the first end of which is provided with a connecting portion; a second arc-shaped clamping section, the first end of which is provided with a locking groove; a latch, the latch being hinged to the connecting portion at the first end of the first arc-shaped clamping section; and a handle, the handle being disposed on the first arc-shaped clamping section or the second arc-shaped clamping section; when the auxiliary focusing device is installed on the focusing drive unit of the focusing lens of the imaging device, the locking portion on the latch engages with the locking groove, so that the first arc-shaped clamping section and the second arc-shaped clamping section clamp the focusing drive unit of the focusing lens of the imaging device.

[0005] According to a specific implementation of this application, a torsion spring is disposed on the first arc-shaped clamping section to generate a preload force; when the locking groove moves to the locking position, the locking part on the latch is inserted into the locking groove under the action of the preload force of the torsion spring.

[0006] According to a specific implementation of an embodiment of this application, one end of the latch is provided with a first hinge hole; the first end of the first arc-shaped clamping section is provided with a second hinge hole; the first hinge hole and the second hinge hole correspond to each other, and a hinge shaft passes through the first hinge hole and the second hinge hole; the hinge shaft is fixed on the first arc-shaped clamping section; a torsion spring is sleeved on the hinge shaft, one end of the torsion spring abuts against the latch, and the other end abuts against the hinge shaft or the first arc-shaped clamping section, so as to apply a preload force to the latch to move the locking part toward the lock groove; wherein, when the other end of the torsion spring abuts against the hinge shaft, the hinge shaft is fixed on the first arc-shaped clamping section.

[0007] According to a specific implementation of the present application, the end of the first end of the first arc-shaped clamping segment extends to form a support portion; the support portion is provided with a receiving groove on the side facing the buckle for supporting and accommodating the first end of the second arc-shaped clamping segment; the bottom of the receiving groove is provided with a clearance hole for avoiding the locking portion on the buckle.

[0008] According to a specific implementation of this application, the outer dimensions of the locking part on the latch gradually increase from the end of the locking part to the root of the locking part; when the end of the locking part is in the clearance hole, the side of the locking part engages with the inner wall of the clearance hole to form a gap between the bottom of the receiving groove and the latch for receiving the first end of the second arc-shaped clamping section.

[0009] According to a specific implementation of this application, the first end of the second arc-shaped clamping segment has a first inclined surface, and the locking part has a second inclined surface; the first inclined surface of the first end of the second arc-shaped clamping segment pushes the second inclined surface on the locking part, and the locking part moves in a direction away from the receiving groove, so that the first end of the second arc-shaped clamping segment enters the receiving groove, and after the first end of the second arc-shaped clamping segment has entered the receiving groove by a predetermined length, the locking part falls and locks into the locking groove of the first end of the second arc-shaped clamping segment.

[0010] According to a specific implementation of this application, the second hinge hole includes a left hinge hole and a right hinge hole respectively disposed on both sides of the first hinge hole; a portion of the wall of the left hinge hole has a plane, and the right hinge hole is a screw hole; one end of the hinge shaft has a plane, and the other end is provided with a screw hole; the plane of the hinge shaft abuts against the plane of the left hinge hole; the device further includes a screw, which is screwed into the right hinge hole and the screw hole of the hinge shaft.

[0011] According to a specific implementation of an embodiment of this application, a rotation limiting structure is provided on the first arc-shaped clamping segment or the second arc-shaped clamping segment; the handle is connected to the rotation limiting structure; the handle can be flipped to a storage position and a working position relative to the rotation limiting structure; wherein, the direction of the storage position is the longitudinal direction of the first arc-shaped clamping segment or the second arc-shaped clamping segment; the direction of the working position is the radial direction of the first arc-shaped clamping segment or the second arc-shaped clamping segment; when the handle is in the working position, the rotation limiting structure restricts the relative movement of the handle and the first arc-shaped clamping segment, so that the handle drives the first arc-shaped clamping segment to rotate; or, the rotation limiting structure restricts the relative movement of the handle and the second arc-shaped clamping segment, so that the handle drives the second arc-shaped clamping segment to rotate.

[0012] According to a specific implementation of an embodiment of this application, the rotation limiting structure includes an opening groove with a top opening and a side opening provided on the first arc-shaped clamping section or the second arc-shaped clamping section, the top opening and the side opening being connected; the rotation limiting structure also includes an elastic positioning member provided at the bottom of the opening groove; the first end of the handle is embedded in the opening groove; a first positioning groove is provided on the end face of the first end of the handle, and a second positioning groove is provided on the side of the first end of the handle; when the handle is in the working position, the elastic positioning member is engaged in the first positioning groove; when the handle rotates from the working position to the storage position, the elastic positioning member is disengaged from the first positioning groove and engaged in the second positioning groove.

[0013] According to a specific implementation of an embodiment of this application, the handle includes a handle rod and a ball, one end of the handle rod being connected to the ball; the ball is embedded in the opening groove; the spherical surface of the ball away from the handle rod is provided with a first positioning groove, and the side of the ball is provided with a second positioning groove.

[0014] According to a specific implementation of this application, the method further includes: a positioning seat, which is disposed in the opening groove and opposite to the top opening; the elastic positioning member includes a spring and a ball; the spring is disposed in the positioning seat; the ball is disposed at one end of the spring near the top opening of the opening groove and is partially disposed in the positioning seat; when the handle is in the working position, the ball is engaged in the first positioning groove; when the handle is rotated from the working position to the folding position, the ball is disengaged from the first positioning groove and engaged in the second positioning groove.

[0015] According to a specific implementation of the present application, the second end of the first arc-shaped clamping segment and the second end of the second arc-shaped clamping segment are hinged together; or, the second end of the first arc-shaped clamping segment is connected to the second end of the second arc-shaped clamping segment through an intermediate structure.

[0016] In this embodiment of the auxiliary focusing device, a latch is hinged to the connecting portion of the first end of the first arc-shaped clamping section, and a locking groove is provided at the first end of the second arc-shaped clamping section. When the auxiliary focusing device is installed on the focusing drive unit of the focusing lens of the imaging device, the locking part on the latch engages in the locking groove, causing the first and second arc-shaped clamping sections to clamp the focusing drive unit of the focusing lens of the imaging device, and the focusing lens of the imaging device can be focused via a handle. By having the locking part of the latch at the second end of the first arc-shaped clamping section engage in the locking groove at the second end of the second arc-shaped clamping section, the auxiliary focusing device can be easily fixed to the focusing drive unit of the focusing lens of the imaging device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an auxiliary focusing device provided in an embodiment of this application;

[0019] Figure 2 An exploded view of an auxiliary focusing device provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the latch structure in one embodiment of this application;

[0021] Figure 4 Exploded view of an auxiliary focusing device provided in another embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the structure of an auxiliary focusing device provided in an embodiment of this application;

[0023] Figure 6 An exploded view of an auxiliary focusing device provided in another embodiment of this application.

[0024] Explanation of key figure labels:

[0025] 1-First arc-shaped clamping section, 1a-Second hinge hole, 1aa-Left hinge hole, 1ab-Right hinge hole; 2-Second arc-shaped clamping section, 2a-Locking groove, 2b-First inclined surface; 3-Lock, 3a-Locking part, 3aa-Second inclined surface, 3b-First hinge hole; 4-Handle; 5-Torsion spring; 6-Hinge shaft, 6a-Planar surface of hinge shaft; 7-Support part, 7a-Allowing hole; 8-Screw; 9-Rotation limiting structure, 9a-Opening groove, 9b-Elastic positioning element, 9ba-Pellet, 9bb-Spring; 10-Positioning seat; 11-Handheld protrusion; 12-Rubber pad. Detailed Implementation

[0026] The embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] To enable those skilled in the art to better understand the technical concept, implementation scheme and beneficial effects of the embodiments of this application, detailed descriptions are provided below through specific embodiments.

[0030] like Figures 1-3 The auxiliary focusing device of this embodiment is applied to an imaging device with a focusing lens, and includes: a first arc-shaped clamping section 1, a second arc-shaped clamping section 2, a latch 3, and a handle 4; the first end of the first arc-shaped clamping section 1 is provided with a connecting part, and the second end of the second arc-shaped clamping section 2 is provided with a locking groove 2a; the latch 3 is hinged to the connecting part at the first end of the first arc-shaped clamping section 1; the handle 4 is provided on the first arc-shaped clamping section 1 or the second arc-shaped clamping section 2.

[0031] When the auxiliary focusing device is installed on the focusing drive unit of the focusing lens of the imaging device, the locking part 3a on the latch 3 engages in the locking groove 2a, so that the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 clamp the focusing drive unit of the focusing lens of the imaging device.

[0032] The imaging device in this embodiment can be a camera, a video camera, or a sight such as a scope or an infrared sight.

[0033] During focusing, the user can adjust the focus using the focusing drive unit of the imaging device's focusing lens. Focusing improves image quality. In some cases, the focusing drive unit is a zoom ring.

[0034] The first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 can also be referred to as arc-shaped clamping hoops. The materials of the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 can be the same or different. The materials of the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 can be hard plastic, stainless steel, or other metal materials. The shapes of the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 are adapted to the shape of the focusing drive part of the focusing lens of the imaging device.

[0035] The first end of the second arc-shaped clamping section 2 is provided with a locking groove 2a, and a latch 3 is hinged on the connecting part of the first end of the first arc-shaped clamping section 1. The shapes of the locking groove 2a and the locking part 3a on the latch 3 are adapted to each other, so that the locking part 3a on the latch 3 can be inserted into the locking groove 2a.

[0036] The handle 4 can be located on the first arc-shaped clamping section 1 or on the second arc-shaped clamping section 2.

[0037] In use, the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 can be fitted onto the focusing drive unit of the focusing lens, so that the first end of the first arc-shaped clamping section 1 and the first end of the second arc-shaped clamping section 2 are close to each other until the locking part 3a on the latch 3 is engaged in the locking groove 2a. At this time, the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 clamp the focusing drive unit of the focusing lens of the imaging device. Then, as needed, the handle 4 can be turned to rotate the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2, thereby driving the focusing drive unit of the focusing lens of the imaging device to rotate for the purpose of solid focusing.

[0038] In this embodiment, a latch 3 is hinged to the connecting part of the first end of the first arc-shaped clamping section 1, and a locking groove 2a is provided at the first end of the second arc-shaped clamping section 2. When the auxiliary focusing device is installed on the focusing drive part of the focusing lens of the imaging device, the locking part 3a on the latch 3 is engaged in the locking groove 2a, so that the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 clamp the focusing drive part of the focusing lens of the imaging device, and the focusing lens of the imaging device can be focused by the handle 4. In this embodiment, by having the locking part 3a of the latch 3 at the second end of the first arc-shaped clamping section 1 engaged in the locking groove 2a at the second end of the second arc-shaped clamping section 2, it is possible to more conveniently fix the auxiliary focusing device to the focusing drive part of the focusing lens of the imaging device, avoiding the problem of the cumbersome operation caused by fixing the auxiliary focusing device to the focusing lens of the imaging device with screws in the prior art. In addition, it is easier to simplify the focusing process of the imaging device and improve the focusing efficiency.

[0039] See Figure 4In order to enable the locking part 3a on the latch to automatically insert into the locking groove 2a, in some examples, this embodiment may also include: a torsion spring 5; the torsion spring 5 is disposed on the first arc-shaped clamping section 1 to generate a preload force; when the locking groove 2a moves to the locking position, the locking part 3a on the latch 3 is inserted into the locking groove 2a under the preload force of the torsion spring 5.

[0040] Torsion spring 5 is an elastic element. Under load, torsion spring 5 will undergo elastic deformation and return to its original shape after the load is removed.

[0041] The locking position is the position of the locking groove 2a when the locking part 3a on the latch 3 can be inserted into the locking groove 2a.

[0042] See Figure 4 In a specific example, one end of the latch 3 is provided with a first hinge hole 3b; the first end of the first arc-shaped clamping section 1 is provided with a second hinge hole 1a.

[0043] The first hinge hole 3b corresponds to the second hinge hole 1a, and a hinge shaft 6 is inserted through the first hinge hole 3b and the second hinge hole 1a; the hinge shaft 6 is connected to the first arc-shaped clamping section 1.

[0044] The torsion spring 5 is sleeved on the hinge shaft 6. One end of the torsion spring 5 abuts against the latch 3, and the other end abuts against the hinge shaft 6 or the first arc-shaped clamping section 1 to apply a preload force to the latch 3 to move the locking part 3a toward the locking groove 2a. When the other end of the torsion spring 5 abuts against the hinge shaft 6, the hinge shaft 6 is fixed on the first arc-shaped clamping section.

[0045] In this embodiment, in order for the locking part 3a of the latch 3 to engage in the lock groove 2a, the latch 3 must first be moved away from the lock groove 2a. When the lock groove 2a on the first end of the second arc-shaped clamping section 2 is in the locked position, under the action of the torsion spring 5, the locking part 3a of the latch 3 can automatically move towards the lock groove 2a and finally engage in the lock groove 2a.

[0046] Because the latch 3 is hinged to the first end of the first arc-shaped clamping section 1, the latch 3 can rotate relative to the first end of the first arc-shaped clamping section 1. This makes it easy for the inner sides of the latch 3 and the first arc-shaped clamping section 1 to come into contact. Therefore, if the locking part 3a on the latch 3 is to be engaged in the locking groove 2a, the latch 3 must first be rotated to separate it from the inner side of the first arc-shaped clamping section 1. This makes the process of engaging the locking part 3a on the latch 3 in the locking groove 2a rather complicated. (See [reference needed]). Figure 2 and Figure 3In some examples, the end of the first end of the first arc-shaped clamping section 1 extends to form a support portion 7; the support portion 7 is provided with a receiving groove on the side facing the latch 3 for supporting and accommodating the first end of the second arc-shaped clamping section 2; the bottom of the receiving groove is provided with a clearance hole 7a for avoiding the locking portion 3a on the latch 3.

[0047] The locking part 3a on the latch 3 can be positioned in the clearance hole 7a, so that the angle between the latch 3 and the support part 7 is small, and the auxiliary focusing device can occupy a small volume.

[0048] In this embodiment, the support part 7 not only supports the latch 3, but also has a receiving groove that can accommodate and support the first end of the second arc-shaped clamping section 2. In addition, the bottom of the receiving groove is provided with a clearance hole 7a for avoiding the locking part 3a on the latch 3. This helps to reduce the volume occupied by the auxiliary focusing device.

[0049] In order to facilitate the first end of the second arc-shaped clamping section 2 to extend into the receiving groove, in some examples, the outer dimensions of the locking part 3a on the latch 3 gradually increase from the end of the locking part 3a to the root of the locking part 3a; when the end of the locking part 3a is in the clearance hole 7a, the side of the locking part 3a engages with the inner wall of the clearance hole 7a to form a gap between the bottom of the receiving groove and the latch 3 for receiving the first end of the second arc-shaped clamping section 2.

[0050] The shape of the locking part 3a can be regular or irregular. The overall dimensions of the locking part 3a increase from the end to the root. For example, the locking part 3a can be conical, and the specific conical surface can include a straight surface and an inclined surface.

[0051] When the end of the locking part 3a is in the clearance hole 7a, the side of the locking part 3a engages with the inner wall of the clearance hole 7a. At this time, there is a gap between the bottom of the receiving groove and the latch 3. This gap allows the first end of the second arc-shaped clamping section 2 to be easily inserted into the receiving groove.

[0052] Similarly, to facilitate the insertion of the first end of the second arc-shaped clamping section 2 into the receiving groove, see... Figure 5 In some examples, the first end of the second arc-shaped clamping section 2 has a first inclined surface 2b, and the locking part 3a has a second inclined surface 3aa; the first inclined surface 2b of the first end of the second arc-shaped clamping section 2 pushes the second inclined surface 3aa on the locking part 3a, and the locking part 3a moves in a direction away from the receiving groove, so that the first end of the second arc-shaped clamping section 2 enters the receiving groove, and after one end of the second arc-shaped clamping section 2 has entered the receiving groove by a predetermined length, the locking part 3a falls and locks into the locking groove 2a of the first end of the second arc-shaped clamping section 2.

[0053] The first inclined surface 2b at the first end of the second arc-shaped clamping section 2 pushes the second inclined surface 3aa on the locking part 3a, causing the locking part 3a to move away from the receiving groove, and finally the locking part 3a is engaged in the locking groove 2a at the first end of the second arc-shaped clamping section 2. Because the first inclined surface 2b at the first end of the second arc-shaped clamping section 2 pushes the second inclined surface 3aa on the locking part 3a, that is, the interaction between the inclined surfaces makes the push of the first end of the second arc-shaped clamping section 2 on the locking part 3a more stable and reliable.

[0054] After the first end of the second arc-shaped clamping section 2 enters the receiving groove for a predetermined length, the locking part 3a falls down, thereby locking the locking part 3a into the locking groove 2a of the first end of the second arc-shaped clamping section 2.

[0055] See Figure 6 In a specific example, the second hinge hole 1a includes a left hinge hole 1aa and a right hinge hole 1ab respectively located on both sides of the first hinge hole 3b; part of the wall of the left hinge hole 1aa has a plane, and the right hinge hole 1ab is a screw hole; one end of the hinge shaft 6 has a plane, and the other end has a screw hole; the plane 6a of the hinge shaft abuts against the plane of the left hinge hole 1aa; the device also includes a screw 8, which is screwed into the right hinge hole 1ab and the screw hole of the hinge shaft 6.

[0056] The plane 6a of the hinge shaft abuts against the plane of the left hinge hole 1aa, so that the hinge shaft 6 will not rotate in the left hinge hole 1aa, that is, it will not rotate relative to the first arc-shaped clamping section 1.

[0057] The other end of the hinge shaft 6 is provided with a screw hole, which is fixed to the right hinge hole 1ab and the screw hole of the hinge shaft 6 by screw 8.

[0058] The handle 4 facilitates focusing of the imaging device. If the handle 4 is fixed on the first arc-shaped clamping section 1 or the second arc-shaped clamping section 2, it will interfere with the user's operation of the imaging device after focusing is completed. In some examples, a rotation limiting structure 9 is provided on the first arc-shaped clamping section 1; the handle 4 is connected to the rotation limiting structure 9; the handle 4 can be flipped to the storage position and the working position relative to the rotation limiting structure 9; wherein, the direction of the storage position is the longitudinal direction of the first arc-shaped clamping section 1; and the direction of the working position is the radial direction of the first arc-shaped clamping section 1.

[0059] When the handle 4 is in the working position, the rotation limit structure 9 restricts the relative rotation of the handle 4 and the first arc-shaped clamping section 1, so that the handle 4 drives the first arc-shaped clamping section 1 to rotate.

[0060] When the auxiliary focusing device is installed on the focusing drive unit of the focusing lens of the imaging device, if focusing is not required using the auxiliary focusing device, the handle can be in the retracted position, with the retracted position oriented in the longitudinal direction of the first arc-shaped clamping section 1. This positions the handle in the longitudinal direction of the imaging device, facilitating user operation. During focusing of the imaging device using the auxiliary focusing device, the handle is in the working position, with the working position oriented in the radial direction of the first arc-shaped clamping section 1. In this position, the handle 4 drives the first arc-shaped clamping section 1 to rotate, thus focusing the imaging device.

[0061] In some other examples, a rotation limiting structure 9 is provided on the second arc-shaped clamping section 2; the handle 4 is connected to the rotation limiting structure 9; the handle 4 can be flipped to the storage position and the working position relative to the rotation limiting structure 9; wherein, the direction of the storage position is the longitudinal direction of the second arc-shaped clamping section 2; and the direction of the working position is the radial direction of the second arc-shaped clamping section 2.

[0062] When the handle 4 is in the working position, the rotation limit structure 9 restricts the relative rotation of the handle 4 and the second arc-shaped clamping section 2, so that the handle 4 drives the second arc-shaped clamping section 2 to rotate.

[0063] See Figure 6 As a preferred embodiment, the rotation limiting structure 9 includes an opening groove 9a with a top opening and a side opening on the first arc-shaped clamping section 1, and the top opening and the side opening are connected; the rotation limiting structure 9 also includes an elastic positioning member 9b provided at the bottom of the opening groove 9a.

[0064] The first end of the handle 4 is embedded in the opening groove 9a; a first positioning groove is provided on the end face of the first end of the handle 4, and a second positioning groove is provided on the side of the first end of the handle 4.

[0065] When the handle 4 is in the working position, the elastic positioning member 9b is engaged in the first positioning groove; when the handle 4 is rotated from the working position to the folding position, the elastic positioning member 9b is disengaged from the first positioning groove and engaged in the second positioning groove.

[0066] It is understandable that when the handle 4 is in the working position, the handle 4 is in the top opening of the opening slot 9a; when the handle 4 is in the folded position, the handle 4 is in the side opening of the opening slot 9a.

[0067] It is understandable that when the rotation limiting structure 9 is provided on the second arc-shaped clamping section 2, the opening groove 9a is provided on the second arc-shaped clamping section 2. Correspondingly, in some examples, the rotation limiting structure 9 includes an opening groove 9a with a top opening and a side opening on the second arc-shaped clamping section 2, and the top opening and the side opening are connected. The rotation limiting structure 9 also includes an elastic positioning member 9b provided at the bottom of the opening groove 9a.

[0068] The first end of the handle 4 is embedded in the opening groove 9a; a first positioning groove is provided on the end face of the first end of the handle 4, and a second positioning groove is provided on the side of the first end of the handle 4.

[0069] When the handle 4 is in the working position, the elastic positioning member 9b is engaged in the first positioning groove; when the handle 4 is rotated from the working position to the folding position, the elastic positioning member 9b is disengaged from the first positioning groove and engaged in the second positioning groove.

[0070] In one specific example, the handle 4 includes a handle rod and a ball, one end of which is connected to the ball; the ball is embedded in the opening groove 9a; a first positioning groove is provided on the spherical surface of the ball away from the handle rod, and a second positioning groove is provided on the side of the ball.

[0071] like Figure 6 In the embodiment shown, the handle rod is inserted from the inside of the first arc-shaped clamping section 1 into the top opening of the opening groove 9a, the ball is in the opening groove 9a, and then the pressure plate is pressed against the position of the first arc-shaped clamping section 1 opposite to the opening groove 9a, thereby embedding the ball into the opening groove 9a.

[0072] See Figure 6 In one specific example, the auxiliary focusing device further includes: a positioning seat 10, which is disposed in the opening groove 9a and opposite to the top opening; an elastic positioning member 9b including a ball 9ba and a spring 9bb; the spring 9bb is disposed in the positioning seat 10; the ball 9ba is disposed at one end of the spring 9bb near the top opening of the opening groove 9a and is partially disposed in the positioning seat 10; when the handle 4 is in the working position, the ball 9ba is engaged in the first positioning groove; when the handle 4 is rotated from the working position to the folding position, the ball 9ba is dislodged from the first positioning groove and engaged in the second positioning groove.

[0073] In this embodiment, since the ball 9ba is partially located in the positioning seat 10, the ball 9ba will not fall off during the process of the handle 4 being in the working position or rotating from the working position to the folding position, and when the handle 4 is in the folding position, thus improving the reliability of the auxiliary focusing device.

[0074] In some examples, the second end of the first arc-shaped clamping segment 1 is hinged to the second end of the second arc-shaped clamping segment 2, which ensures that the two can rotate relative to each other. In use, it is convenient to be fitted onto the lens of the imaging device so that the first arc-shaped clamping segment 1 and the second arc-shaped clamping segment 2 clamp the focusing drive part of the focusing lens of the imaging device. In other examples, the second end of the first arc-shaped clamping segment 1 is connected to the second end of the second arc-shaped clamping segment 2 through an intermediate structure.

[0075] The intermediate structure can be any structure. In one example, the intermediate structure is a third arc-shaped clamping section, which is hinged to the second end of the first arc-shaped clamping section 1 and the second end of the second arc-shaped clamping section 2.

[0076] To facilitate users in installing the auxiliary focusing device on the focusing drive unit of the focusing lens of the imaging device, in some examples, a hand-held protrusion 11 is provided on the second arc-shaped clamping section 2 at any position other than the position where it is hinged to the first arc-shaped clamping section 1; or, a hand-held protrusion 11 is provided on the first arc-shaped clamping section 1 at any position other than the position where it is hinged to the second arc-shaped clamping section 2.

[0077] The user can push the hand-held protrusion 11 to bring the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 closer together until the locking part 3a of the latch 3 is engaged in the locking groove 2a.

[0078] In order to improve the effect of the first arc-shaped clamping section 1 and the second arc-shaped clamping section 2 clamping the focusing drive unit of the focusing lens of the imaging device, in some examples, rubber pads 12 are respectively provided on the surface of the first arc-shaped clamping section 1 facing the second arc-shaped clamping section 2 and the surface of the second arc-shaped clamping section 2 facing the first arc-shaped clamping section 1.

[0079] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0080] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0081] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An auxiliary focusing device, characterized in that, Imaging devices with focusing lenses, including: The first arc-shaped clamping section has a connecting part at its first end; The second arc-shaped clamping section has a locking groove at its first end; A latch, the latch being hinged to the connecting portion at the first end of the first arc-shaped clamping section; A handle, wherein the handle is disposed on the first arc-shaped clamping section or the second arc-shaped clamping section; When the auxiliary focusing device is installed on the focusing drive unit of the focusing lens of the imaging device, the locking part on the latch engages in the locking groove, so that the first arc-shaped clamping section and the second arc-shaped clamping section clamp the focusing drive unit of the focusing lens of the imaging device.

2. The auxiliary focusing device according to claim 1, characterized in that, Also includes: A torsion spring is provided on the first arc-shaped clamping section to generate a preload force; When the lock groove moves to the locking position, the locking part on the latch is inserted into the lock groove under the preload of the torsion spring.

3. The auxiliary focusing device according to claim 2, characterized in that, One end of the latch is provided with a first hinge hole; the first end of the first arc-shaped clamping section is provided with a second hinge hole; The first hinge hole corresponds to the second hinge hole, and a hinge shaft is inserted through the first hinge hole and the second hinge hole; the hinge shaft is connected to the first arc-shaped clamping section; The torsion spring is sleeved on the hinge shaft. One end of the torsion spring abuts against the latch, and the other end abuts against the hinge shaft or the first arc-shaped clamping section to apply a preload force to the latch, causing the locking part to move toward the lock groove. When the other end of the torsion spring abuts against the hinge shaft, the hinge shaft is fixed on the first arc-shaped clamping section.

4. The auxiliary focusing device according to claim 1, characterized in that, The first end of the first arc-shaped clamping section extends to form a support portion; the support portion is provided with a receiving groove on the side facing the buckle for supporting and accommodating the first end of the second arc-shaped clamping section; the bottom of the receiving groove is provided with a clearance hole for avoiding the locking portion on the buckle.

5. The auxiliary focusing device according to claim 4, characterized in that, The external dimensions of the locking part on the latch gradually increase from the end of the locking part to the root of the locking part; When the end of the locking part is in the clearance hole, the side of the locking part engages with the inner wall of the clearance hole to form a gap between the bottom of the receiving groove and the latch for receiving the first end of the second arc-shaped clamping section.

6. The auxiliary focusing device according to claim 5, characterized in that, The first end of the second arc-shaped clamping section has a first inclined surface, and the locking part has a second inclined surface; The first inclined surface at the first end of the second arc-shaped clamping section pushes the second inclined surface on the locking part, causing the locking part to move away from the receiving groove, so that the first end of the second arc-shaped clamping section enters the receiving groove. After the first end of the second arc-shaped clamping section has entered the receiving groove by a predetermined length, the locking part falls and locks into the locking groove at the first end of the second arc-shaped clamping section.

7. The auxiliary focusing device according to claim 3, characterized in that, The second hinge hole includes a left hinge hole and a right hinge hole respectively provided on both sides of the first hinge hole; part of the hole wall of the left hinge hole has a plane, and the right hinge hole is a screw hole; One end of the hinge shaft has a flat surface, and the other end has a screw hole; The plane of the hinge shaft abuts against the plane of the left hinge hole; The device also includes screws screwed into the right hinge hole and the screw hole of the hinge shaft.

8. The auxiliary focusing device according to claim 1, characterized in that, A rotation limiting structure is provided on the first arc-shaped clamping section or the second arc-shaped clamping section; The handle is connected to the rotation limiting structure; The handle can be flipped to a storage position and a working position relative to the rotation limiting structure; wherein, the direction of the storage position is the longitudinal direction of the first arc-shaped clamping section or the second arc-shaped clamping section; the direction of the working position is the radial direction of the first arc-shaped clamping section or the second arc-shaped clamping section; When the handle is in the working position, the rotation limiting structure restricts the relative rotation of the handle and the first arc-shaped clamping section, so that the handle drives the first arc-shaped clamping section to rotate; or, the rotation limiting structure restricts the relative rotation of the handle and the second arc-shaped clamping section, so that the handle drives the second arc-shaped clamping section to rotate.

9. The auxiliary focusing device according to claim 8, characterized in that, The rotation limiting structure includes an opening groove with a top opening and a side opening provided on the first arc-shaped clamping section or the second arc-shaped clamping section, wherein the top opening and the side opening are connected. The rotation limiting structure also includes an elastic positioning element provided at the bottom of the opening groove; The first end of the handle is embedded in the opening groove; a first positioning groove is provided on the end face of the first end of the handle, and a second positioning groove is provided on the side of the first end of the handle; When the handle is in the working position, the elastic positioning member is engaged in the first positioning groove; when the handle is rotated from the working position to the storage position, the elastic positioning member is disengaged from the first positioning groove and engaged in the second positioning groove.

10. The auxiliary focusing device according to claim 9, characterized in that, The handle includes a handle rod and a ball, one end of which is connected to the ball; the ball is embedded in the opening groove; the ball has a first positioning groove on its surface away from the handle rod, and a second positioning groove on its side.

11. The auxiliary focusing device according to claim 9, characterized in that, Also includes: A positioning seat, wherein the positioning seat is disposed in the opening groove and is opposite to the top opening; The elastic positioning element includes a spring and a ball; the spring is disposed in the positioning seat; the ball is disposed at one end of the spring near the top opening of the slot, and is partially disposed in the positioning seat. When the handle is in the working position, the ball is engaged in the first positioning groove; when the handle is rotated from the working position to the folding position, the ball is dislodged from the first positioning groove and engaged in the second positioning groove.

12. The auxiliary focusing device according to claim 1, characterized in that, The second end of the first arc-shaped clamping segment and the second end of the second arc-shaped clamping segment are hinged together; or, the second end of the first arc-shaped clamping segment is connected to the second end of the second arc-shaped clamping segment through an intermediate structure.

Images