Zoom unit, zoom camera module, endoscope and endoscope system

Abstract

The invention provides a zoom unit, a zoom camera module, an endoscope and an endoscope system. The endoscope system comprises an image processing device, a light source device and the endoscope. The endoscope comprises a connection part, an operation part, an insertion part and a zoom camera module. The zoom camera module comprises a front-end lens group, a rear-end lens group, a first lens body and a zoom unit, the front-end lens group and the rear-end lens group are arranged at an interval along a first direction, the zoom unit comprises a moving frame for mounting the first lens body and a driving assembly, and the driving assembly drives the first lens body to be slidably arranged between the front-end lens group and the rear-end lens group. The movable frame is provided with a first face and a second face which are oppositely arranged in the first direction. The driving assembly comprises a flexible driving rope, an abutting piece and an elastic structure. The elastic structure abuts against the first face of the movable frame in the first direction, the flexible driving rope is fixedly connected with the abutting piece, and the abutting piece abuts against the second face of the movable frame in the first direction under the pulling force effect of the flexible driving rope. The problem that the moving frame is blocked can be solved.

Description

Technical Field

[0001] This application belongs to the field of endoscope technology, and more specifically, relates to a zoom unit, a zoom camera module, an endoscope, and an endoscope system. Background Technology

[0002] The zoom camera module is a crucial component of a zoom endoscope. It acquires optical images of lesions in the human body to facilitate observation by doctors and aid in manipulation. To achieve zooming, the zoom camera module typically includes a front endpiece group, a rear endpiece group, a moving endpiece group, and a drive assembly. The drive assembly moves the moving endpiece group along the principal optical axis between the front and rear endpiece groups to achieve endoscope zooming. However, in related technologies, the moving endpiece group is prone to jamming or becoming stuck during movement, preventing zooming. Summary of the Invention

[0003] The purpose of this application is to provide a zoom unit, a zoom camera module, an endoscope, and an endoscope system to solve the technical problem that the movable frame in the prior art is prone to movement jamming or freezing.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: In the first aspect, a zoom unit is provided, which is applied in the zoom camera module of an endoscope to realize the zoom of the endoscope. The zoom unit includes a movable frame for mounting a first endoscope body and a drive component for driving the movable frame to move along a first direction.

[0005] The mobile frame has a first surface and a second surface that are arranged opposite to each other along the first direction;

[0006] The drive assembly includes a flexible drive rope, a pressing member, and an elastic structure; the elastic structure abuts against a first surface of the movable frame along the first direction, the flexible drive rope is fixedly connected to the pressing member, and the pressing member abuts against a second surface of the movable frame along the first direction under the tension of the flexible drive rope.

[0007] In some embodiments, the elastic structure and the movable frame abut against each other in a planar manner, and the first surface is a plane perpendicular to the first direction;

[0008] And / or, the pressing member abuts against the movable frame in a planar contact, and the second surface is a plane perpendicular to the first direction.

[0009] In some embodiments, the movable frame has a first mounting hole extending along the first direction;

[0010] The pressing member includes a sleeve portion and an abutting portion connected to each other. The abutting portion abuts against the second surface, and the sleeve portion is inserted into the first assembly hole. The outer peripheral surface of the sleeve portion has a first gap with the inner peripheral surface of the first assembly hole.

[0011] In some embodiments, the elastic structure includes an elastic element and a guide element, the elastic element elastically abutting the guide element against a first surface of the movable frame.

[0012] In some embodiments, the movable frame has a first mounting hole extending through the first direction, and the guide member has a second mounting hole at its end facing the movable frame;

[0013] The pressing member includes a sleeve portion and an abutting portion connected to each other. The abutting portion abuts against the second surface, and the sleeve portion is respectively inserted into the first assembly hole and the second assembly hole. The outer peripheral surface of the sleeve portion has a first gap with the inner peripheral surface of the first assembly hole, and the outer peripheral surface of the sleeve portion has a second gap with the inner peripheral surface of the second assembly hole.

[0014] In some embodiments, the zoom unit further includes a hollow mounting bracket, the guide member is slidably disposed in the mounting bracket, and the outer side of the guide member is guided and engaged with the inner side of the mounting bracket.

[0015] In some embodiments, a sealing ring abuts between the outer side of the guide and the inner side of the mounting bracket.

[0016] In some embodiments, the elastic element is a cylindrical spring, and the cylindrical spring forms a guiding engagement with the guide element;

[0017] And / or, the cylindrical spring forms a guiding engagement with the mounting bracket;

[0018] And / or, the inner cavity of the mounting bracket is provided with a mating part for forming a guiding engagement with the cylindrical spring.

[0019] In some embodiments, the zoom unit further includes an adjusting member, the elastic member abutting between the adjusting member and the guide member, the adjusting member being position-adjustable on the mounting bracket to adjust the initial length of the elastic member.

[0020] In some embodiments, the elastic structure includes an elastic element that abuts against a first surface of the movable frame.

[0021] Secondly, this application also provides a zoom camera module, including a front lens group, a rear lens group, a first lens body, and a zoom unit. The front lens group and the rear lens group are spaced apart along the first direction. The zoom unit includes a movable frame for mounting the first lens body and a drive component. The drive component drives the movable frame to slide so that the first lens body is slidably disposed between the front lens group and the rear lens group.

[0022] In some embodiments, the zoom camera module includes a mounting bracket, the front lens group and the rear lens group are both fixed to the mounting bracket, the mounting bracket has a mating hole, and the movable bracket forms a shaft hole mating with the mating hole.

[0023] In some embodiments, the peripheral sidewall of the fixing frame has a guide groove communicating with the mating hole; the movable frame includes a sliding portion abutting between the pressing member and the elastic structure and a mounting portion for mounting the first mirror body, the mounting portion forming a shaft hole fit with the mating hole, and the sliding portion slidingly fitting with the guide groove.

[0024] Thirdly, this application also provides an endoscope, including a connecting part, an operating part, an insertion part, and a zoom camera module.

[0025] Fourthly, this application also provides an endoscope system, including an image processing device, a light source device, and an endoscope.

[0026] The beneficial effects of the zoom unit, zoom camera module, endoscope, and endoscope system provided in this application are as follows: by pressing the elastic structure against the first side of the moving frame, and the pressing member against the second side of the moving frame under the tension of the flexible drive rope, the moving frame can maintain its movement along the first direction under the double-sided pressing action of the pressing member and the elastic structure when the moving frame is pulled by the flexible drive rope. This improves the stability of the moving frame, avoids tilting when the moving frame moves, and thus avoids jamming during the movement of the moving frame, ensuring the zoom effect. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, 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.

[0028] Figure 1 This is a three-dimensional structural diagram of the zoom camera module provided in the embodiments of this application;

[0029] Figure 2This is a partially exploded view of the zoom camera module provided in an embodiment of this application;

[0030] Figure 3 This is a cross-sectional view of the zoom camera module provided in an embodiment of this application.

[0031] Figure 4 This is a partial cross-sectional view of the zoom camera module provided in an embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the assembly structure of the movable frame and the fixed frame in the zoom camera module provided in the embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the structure in the endoscope provided in the embodiments of this application;

[0034] Figure 7 This is a schematic diagram of the front end structure of the insertion part of an endoscope provided in an embodiment of this application.

[0035] The following are the labeling elements in the figure:

[0036] 100. Zoom unit; 110. Moving lens group; 111. Moving frame; 1111. First surface; 1112. Second surface; 1113. First mounting hole; 1114. Sliding part; 1115. Mounting part; 112. First lens body; 120. Drive assembly; 121. Flexible drive rope; 122. Pressing member; 1221. Abutting part; 1222. Sleeve part; 1223. Center hole; 1224. Receiving groove; 123. Elastic member; 124. Guide member; 1241. Annular groove; 1242. Second mounting hole; 1243. 1. Positioning part; 125. Adjusting part; 1251. Insertion hole; 130. Elastic structure; 140. Mounting bracket; 150. Sealing ring; 160. Protective tube; 170. Sealing plug; 200. Front lens group; 210. Front frame; 220. Second lens body; 300. Rear lens group; 310. Third lens body; 400. Fixing bracket; 410. Mating hole; 420. Guide groove; 1. Connecting part; 2. Operating part; 21. Handle; 3. Insertion part; 4. Zoom camera module; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0037] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0041] An endoscope mainly consists of a connecting section, an operating section, and an insertion section connected in sequence. Simultaneously, a zoom camera module is also an important component of the endoscope. The zoom camera module is inserted into the insertion section and extends to its front end. It is used to acquire optical images of the lesion site in the human body, facilitating observation by the doctor and aiding in operation. Furthermore, the zoom function of the zoom camera module plays a decisive role in optical imaging.

[0042] To achieve zoom, a zoom camera module typically includes a front lens group, a rear lens group, a moving lens group, and a drive assembly. The drive assembly moves the moving lens group between the front and rear lens groups along the principal optical axis to achieve zoom. Specifically, the drive assembly is connected to a drive handle on the control unit via a steel cable. By moving the drive handle on the control unit, the drive handle drives the drive assembly via the steel cable, thus moving the moving lens group along the principal optical axis. However, because the steel cable is a flexible structure, during the pushing and pulling process, the deformation of the steel cable causes a slight shift in the direction of the pushing force, making it impossible to maintain continuous parallelism with the principal optical axis. This makes the moving lens group prone to deflection and jamming with its mating hole. This problem is particularly severe when the gap between the moving lens group and the mating hole is small, ultimately preventing zooming.

[0043] To address the issue of jamming or stuckness in the moving lens assembly, related technologies have been implemented by increasing the rounded corners around the outer periphery of the moving lens assembly or by increasing the gap between the moving lens assembly and the mating hole. However, these solutions can easily cause the optical axis of the moving lens assembly to deflect relative to the principal optical axis of the zoom camera module, resulting in poor image quality.

[0044] Therefore, this application provides a zoom unit 100, a zoom camera module 4, an endoscope, and an endoscope system. The pressing member 122 and the elastic structure 130 are respectively abutted against the opposite sides of the movable frame 111 along the main optical axis, so that the movable frame 111 is continuously clamped by two forces along the main optical axis during the movement, thereby ensuring that the movable frame 111 always moves along the optical axis. This not only improves the problem of the movable frame 111 being prone to jamming, but also eliminates the need to improve the jamming situation by increasing the transition radius on the outer periphery of the movable frame 111 or increasing the gap between the movable frame 111 and the mating hole 410. As a result, the optical axis of the movable frame 111 will not deflect from the main optical axis of the zoom camera module, resulting in poor imaging.

[0045] Please see Figures 1 to 4 The zoom unit 100 provided in this application embodiment will now be described in detail. This zoom unit 100 is applied in the zoom camera module 4 of an endoscope to achieve endoscope zoom. It should be noted that, in this application, the zoom unit 100 is applied in the zoom camera module 4. During design and use, for ease of distinction, the direction of the zoom camera module 4 towards the object to be photographed is generally referred to as "front," and the direction away from the object to be photographed is referred to as "rear." In this application, for ease of description, it will also be described using the front and rear analogy.

[0046] The zoom unit 100 includes a movable frame 111 for mounting a first lens body 112 and a drive assembly 120 for driving the movable frame 111 to move along a first direction X. The movable frame 111 has a first surface 1111 and a second surface 1112 that are disposed opposite to each other along the first direction X. The drive assembly 120 includes a flexible drive rope 121, a pressing member 122 and an elastic structure 130. The elastic structure 130 is pressed against the first surface 1111 of the movable frame 111 along the first direction X. The flexible drive rope 121 is fixedly connected to the pressing member 122. Under the tension of the flexible drive rope 121, the pressing member 122 is pressed against the second surface 1112 of the movable frame 111 along the first direction X.

[0047] When the zoom unit 100 is applied to the zoom camera module 4, it is necessary to ensure that the first direction X is parallel to the main optical axis of the zoom camera module 4. When zooming, the drive component 120 drives the moving frame 111 and the first lens body 112 to move along the main optical axis to change the focal length, thereby realizing the magnification and reduction of the image.

[0048] The flexible drive rope 121 refers to a drive rope with a certain degree of flexibility, such as a steel wire rope, synthetic fiber rope, or other composite material rope. The flexible drive rope 121 has a front end and a rear end that are arranged opposite to each other. The front end of the flexible drive rope 121 is connected to the pressure member 122, and the rear end of the flexible drive rope 121 extends to the operating part 2 to connect with the handle 21 on the operating part 2. By rotating the handle 21, the flexible drive rope 121 is pulled, thereby pressing the pressure member 122 against the second surface 1112 of the moving frame 111. At the same time, the elastic structure 130 elastically presses against the first surface 1111 of the moving frame 111.

[0049] The elastic structure 130 is a structure that can deform at least partially under external force and return to its original shape after the external force disappears. One end of the elastic structure 130 is fixed, and the other end of the elastic structure 130 abuts against the first surface 1111 of the movable frame 111. The elastic structure 130 is always in a compressed state, that is, the elastic structure 130 always exerts a forward pushing force on the movable frame 111. When it is necessary to move the movable frame 111 to the rear, the flexible drive rope 121 is pulled by rotating the handle 21 to move the movable frame 111 backward through the pressing member 122. At the same time, the elastic structure 130 elastically abuts against the first surface 1111 (that is, the rear side) of the movable frame 111 and accumulates elastic force. The movable frame 111 maintains a smooth backward movement under the action of the double-sided pushing force. Since the thrust of the elastic structure 130 and the tension of the pressing member 122 are both along the first direction X, the moving frame 111 is ensured to move along the first direction X to avoid jamming between the moving frame 111 and its mating hole 410. When it is necessary to move the moving frame 111 backward, the flexible drive rope 121 is released by rotating the handle 21. Under the elastic action of the elastic structure 130, the moving frame 111 moves forward along the first direction X. Although the flexible drive rope 121 has a pushing force on the moving frame 111 at this time, the elastic restoring force of the elastic structure 130 is much greater than the thrust of the flexible drive rope 121, so that the final resultant force direction is basically parallel to the main optical axis, so that the moving frame 111 remains in a state that is continuously close to perpendicular to the optical axis.

[0050] The zoom unit 100 provided in this application embodiment, by pressing the elastic structure 130 against the first surface 1111 of the movable frame 111, and the pressing member 122 against the second surface 1112 of the movable frame 111 under the tension of the flexible drive rope 121, makes the movable frame 111 able to maintain movement along the first direction X under the double-sided pressing action of the pressing member 122 and the elastic structure 130 when the movable frame 111 is pulled by the flexible drive rope 121. This improves the stability of the movement of the movable frame 111, avoids tilting when the movable frame 111 moves, and avoids jamming when the movable frame 111 moves, thus ensuring the zoom effect.

[0051] In some embodiments, the movable frame 111 and the pressing member 122 are independently arranged and mutually abutted. This arrangement allows the pressing member 122 to press against the second surface 1112 of the movable frame 111 under the action of the flexible drive rope 121, ensuring smooth movement of the movable frame 111. It also reduces the manufacturing difficulty of the pressing member 122 and the movable frame 111. However, if the movable frame 111 and the pressing member 122 are fixedly connected, the manufacturing and installation requirements are very high in order to make the mirror body of the movable frame 111 perpendicular to the main optical axis.

[0052] In some embodiments, please refer to Figure 3 and Figure 4 The elastic structure 130 and the movable frame 111 are in planar contact, and the first surface 1111 is a plane perpendicular to the first direction X. By applying a force along the first direction X to the first surface 1111 perpendicular to the first direction X, the elastic structure 130 can push the movable frame 111 forward along the first direction X. The pressing member 122 and the movable frame 111 are in planar contact, and the second surface 1112 is a plane perpendicular to the first direction X. By applying a force along the first direction X to the second surface 1112 perpendicular to the first direction X, the pressing member 122 can pull the movable frame 111 backward along the first direction X. When the pulling force of the pressing member 122 on the movable frame 111 is greater than the pushing force of the elastic structure 130 on the movable frame 111, the movable frame 111 moves backward along the first direction X. When the pushing force of the elastic structure 130 on the movable frame 111 is greater than the pushing force of the pressing member 122 on the movable frame 111, the movable frame 111 moves forward along the first direction X. It can be understood that in other embodiments of this application, the elastic structure 130 and the movable frame 111 may also be in line-surface contact, or curved surface contact, or toothed surface contact. The first surface 1111 may also be a curved surface, an arc surface, or a toothed surface. The pressing member 122 and the movable frame 111 may also be in line-surface contact, or curved surface contact, or toothed surface contact. The second surface 1112 may also be a curved surface, an arc surface, or a toothed surface.

[0053] In some embodiments, please refer to Figure 3 and Figure 4The movable frame 111 has a first mounting hole 1113 extending along a first direction X; the pressing member 122 includes a sleeve portion 1222 and a pressing portion 1221 connected to each other. The pressing portion 1221 abuts against the second surface 1112, and the sleeve portion 1222 is inserted into the first mounting hole 1113. The outer peripheral surface of the sleeve portion 1222 and the inner peripheral surface of the first mounting hole 1113 have a first gap. The first gap provides radial redundancy between the sleeve portion 1222 and the movable frame 111, ensuring that the pressing member 122, when pushed or pulled slightly by the flexible drive rope 121, will not affect the movement of the movable frame 111, thus preventing jamming.

[0054] In some embodiments, please refer to Figure 4 The sleeve portion 1222 and the abutment portion 1221 are connected in a T-shape. Both the sleeve portion 1222 and the abutment portion 1221 are cylindrical and coaxially arranged. The sleeve portion 1222 is coaxially arranged with the first mounting hole 1113 of the movable frame 111, and the surface of the abutment portion 1221 that abuts against the movable frame 111 is flat. Furthermore, the sleeve portion 1222 and the abutment portion 1221 are integrally connected, for example, by integral machining, integral injection molding, or integral 3D printing.

[0055] In some embodiments, please refer to Figure 4 The first mounting hole 1113 penetrates the first surface 1111 and the second surface 1112 of the movable frame 111 along the first direction X. The sleeve portion 1222 of the pressing member 122 is provided through the first mounting hole 1113. The pressing member 122 has a central hole 1223. The front end of the flexible drive rope 121 passes through the sleeve portion 1222 and the pressing portion 1221 sequentially from the rear end of the pressing member 122, and the front end of the flexible drive rope 121 is fixedly connected to the pressing portion 1221. When the flexible drive rope 121 is pulled in the operating part 2, the pressing member 122 can be pulled backward, thereby pressing the pressing member 122 against the second surface 1112 of the movable frame 111, and driving the movable frame 111 to move backward along the first direction X.

[0056] In some embodiments, please refer to Figure 4 The front center of the abutment portion 1221 has a recessed receiving groove 1224 that communicates with the central hole 1223. The front end of the flexible drive rope 121 extends to the receiving groove 1224. By applying glue or filling solder into the receiving groove 1224, the front end of the flexible drive rope 121 is fixed to the abutment portion 1221, thereby enabling the flexible drive rope 121 to pull the pressing member 122 to move.

[0057] In some embodiments, please refer to Figure 3 and Figure 4The elastic structure 130 includes an elastic element 123 and a guide element 124. The elastic element 123 elastically abuts the guide element 124 against the first surface 1111 of the movable frame 111.

[0058] It should be noted that the elastic element 123 refers to a structure that deforms under external force and returns to its original shape after the external force is removed. In contrast, the guide element 124 is a rigid structure that does not deform under external force. In this embodiment, by dividing the elastic structure 130 into two parts, the elastic element 123 and the guide element 124, on the one hand, the elastic element 123 can apply an elastic force to the moving frame 111, and on the other hand, the guide element 124 and the moving frame 111 are in rigid contact, thereby ensuring the stability of the contact. For example, the smooth movement of the moving frame 111 can be ensured by the plane contact between the guide element 124 and the moving frame 111. In some other embodiments of this application, the elastic structure 130 may also include only the elastic element 123, which directly and elastically contacts the first surface 1111 of the moving frame 111. The elastic element 123 may be a cylindrical spring. Alternatively, in order to make the elastic element 123 and the moving frame 111 have a plane contact, the elastic element 123 may also be a bent and connected spring sheet.

[0059] In some embodiments, please refer to Figure 3 and Figure 4 The movable frame 111 has a first mounting hole 1113 extending along the first direction X, and the end of the guide member 124 facing the movable frame 111 has a second mounting hole 1242; the pressing member 122 includes a sleeve portion 1222 and an abutment portion 1221 connected to each other, the abutment portion 1221 abuts against the second surface 1112, and the sleeve portion 1222 is respectively inserted into the first mounting hole 1113 and the second mounting hole 1242; the outer peripheral surface of the sleeve portion 1222 has a first gap with the inner peripheral surface of the first mounting hole 1113, and the outer peripheral surface of the sleeve portion 1222 has a second gap with the inner peripheral surface of the second mounting hole 1242. The sleeve portion 1222 enhances the connection strength between the pressing member 122 and the moving frame 111 and the guide member 124, ensuring the stability of the pressing member 122 in pulling the moving frame 111. It also enables the guide member 124 to guide the movement of the pressing member 122, ensuring the parallelism of the movement of the pressing member 122. The first gap and the second gap provide radial redundancy between the sleeve portion 122 and the moving frame 111 and the guide member 124, so that when the pressing member 122 is pushed and pulled by the flexible drive rope 121 with a slight tilt, it will not affect the movement of the moving frame 111, thus preventing jamming.

[0060] It should be noted that the specific values ​​of the first and second gaps are not limited, as long as there is a certain gap between them.

[0061] In some embodiments, please refer to Figure 3 and Figure 4 The zoom unit 100 also includes a hollow mounting bracket 140, in which a guide member 124 is slidably disposed. The outer surface of the guide member 124 guides and engages with the inner surface of the mounting bracket 140. This arrangement ensures that the mounting bracket 140 guides the movement of the guide member 124, guaranteeing that the guide member 124 can maintain movement along the first direction X. Furthermore, the guide member 124 abuts against the first surface 1111 of the movable frame 111, thus also guiding the movement of the movable frame 111, ensuring that the movable frame 111 also maintains movement along the first direction X.

[0062] Optionally, the outer surface of the guide 124 is cylindrical, and the inner surface of the mounting bracket 140 is also cylindrical. The guide 124 and the mounting bracket 140 are fitted with a shaft hole, which provides better alignment and ensures the guiding effect of the guide 124 and the mounting bracket 140. Understandably, in other embodiments of this application, the cross-section of the outer surface of the guide 124 can also be elliptical, oblong, racetrack-shaped, square, or polygonal, etc. Correspondingly, the cross-section of the inner surface of the mounting bracket 140 is set to match the cross-section of the outer surface of the guide 124.

[0063] In some embodiments, please refer to Figure 3 and Figure 4 A sealing ring 150 abuts against the outer side of the guide member 124 and the inner side of the mounting bracket 140. The sealing ring 150 can absorb the vibration generated when the drive assembly 120 moves, increasing the smoothness of the transmission. In addition, the sealing ring 150 can also ensure the airtightness of the rear end of the zoom camera module 4. The specific sealing structure design of the rear end of the zoom camera module 4 will be explained in detail later.

[0064] In some embodiments, please refer to Figure 4 The outer side of the guide member 124 has an indented annular groove 1241. A portion of the sealing ring 150 is housed in the annular groove 1241, and a portion of the sealing ring 150 extends out of the annular groove 1241 to elastically abut against the inner side of the mounting bracket 140, thereby achieving a seal between the guide member 124 and the mounting bracket 140.

[0065] In some embodiments, please refer to Figure 4 The number of sealing rings 150 can be one or more. When the number of sealing rings 150 is multiple, each sealing ring 150 is arranged at intervals along the first direction X.

[0066] In some embodiments, the elastic element 123 is a cylindrical spring, which forms a guiding engagement with the guide element 124. That is, the extension and retraction of the cylindrical spring are guided by the guide element 124 to ensure that the cylindrical spring extends and retracts along the first direction X, and to ensure that the cylindrical spring maintains a force along the first direction X on the movable frame 111.

[0067] In some embodiments, please refer to Figure 4 The guide member 124 has a positioning part 1243 axially protruding from one end opposite to the movable frame 111. A cylindrical spring is partially sleeved outside the positioning part 1243 and is sleeved inside the mounting frame 140. That is, the outer circumferential surface of the cylindrical spring is guided and engaged with the inner circumferential surface of the mounting frame 140. In this way, the cylindrical spring can be extended and retracted along the first direction X by the dual guidance of the positioning part 1243 and the mounting frame 140. In other embodiments of this application, in addition to the positioning part 1243 and the mounting frame 140, a mating part can be provided inside the mounting frame 140. The opposite ends of the cylindrical spring are respectively sleeved on the positioning part 1243 and the mating part, and the outer circumferential surface of the cylindrical spring is guided and engaged with the inner circumferential surface of the mounting frame 140, further ensuring that the cylindrical spring extends and retracts along the first direction X. It is understood that in other embodiments of this application, the cylindrical spring may be guided to the mounting bracket 140, or a mating part for guiding the cylindrical spring may be provided in the inner cavity of the mounting bracket 140. This is not the only one.

[0068] In some embodiments, please refer to Figure 3 The zoom unit 100 also includes an adjusting member 125, an elastic member 123, and a guide member 124 movably mounted on the mounting frame 140. The elastic member 123 abuts against the adjusting member 125 and the guide member 124. The position of the adjusting member 125 on the mounting frame 140 is adjustable to adjust the initial length of the elastic member 123. By adjusting the adjusting member 125, the initial length of the elastic member 123 can be adjusted, thereby adjusting the initial elastic force of the elastic member 123 according to the restoring force requirements of the moving frame 111.

[0069] As an example, please refer to Figure 3 The adjusting member 125 includes an adjusting nut, which is threaded onto the mounting bracket 140. Rotating the adjusting nut adjusts its installation depth within the mounting bracket 140, thereby adjusting the initial length of the elastic member 123. It is understood that in other embodiments of this application, the adjusting member 125 may also have multiple protrusions spaced along a first direction X, and the mounting bracket 140 may have recesses. Different protrusions engaging with the recesses can adjust the assembly depth of the adjusting member 125, thereby adjusting the initial length of the elastic member 123.

[0070] In some embodiments, please refer to Figure 3The adjusting nut is installed at the rear port of the mounting bracket 140, so that the preload length of the elastic element 123 can be adjusted by rotating the adjusting nut at the rear end of the mounting bracket 140, which is convenient for adjustment.

[0071] In some embodiments, please refer to Figure 3 and Figure 4 The mounting frame 140 is hollow along the first direction X. The elastic element 123, the guide element 124 and the pressing element 122 are all installed inside the mounting frame 140. The adjusting nut is installed at the rear end of the mounting frame 140. The movable frame 111 is partially slidably disposed inside the mounting frame 140. Part of the movable frame 111 extends out from the peripheral side of the mounting frame 140. The flexible drive rope 121 passes through the adjusting nut, the elastic element 123, the guide element 124, the movable frame 111 and the pressing element 122 in sequence from the rear end of the mounting frame 140, and is connected to the pressing element 122.

[0072] Please see Figure 3 The flexible drive rope 121 located between the operating part 2 and the mounting frame 140 is externally fitted with a protective tube 160. The protective tube 160 protects the flexible drive rope 121 and prevents its movement from being disturbed by external factors. Meanwhile, the rear end of the adjusting nut has a insertion hole 1251 of a certain length. The front end of the protective tube 160 is inserted into the insertion hole 1251. This insertion and engagement of the adjusting nut and the protective tube 160 provides a guiding effect on the flexible drive rope 121. For example, during assembly, the front end of the flexible drive rope 121 can be inserted into the mounting frame 140 through the insertion hole 1251 of the adjusting nut, thereby improving the assembly efficiency and success rate of the flexible drive rope 121.

[0073] In some embodiments, please refer to Figure 1 and Figure 3 A sealing plug 170 is installed at the front opening of the mounting bracket 140. Through the combined action of the sealing plug 170 and the sealing ring 150, the light sealing of the part of the mounting bracket 140 corresponding to the movable bracket 111 is guaranteed, so as to avoid light leakage and image distortion.

[0074] The above-described design facilitates the replacement of easily worn components such as the sealing ring 150, elastic element 123, and guide element 124. For example, when replacing the sealing ring 150, the specific operation is as follows: Open the sealing plug 170, pull out the flexible drive rope 121 and the pressing element 122 from the front end of the mounting bracket 140, simultaneously unscrew the adjusting nut with the protective tube 160, and push out the guide element 124 and elastic element 123 with the sealing ring 150 from the rear end of the mounting bracket 140 to replace the sealing ring 150. This design allows for the replacement of the sealing ring 150 without extensive disassembly of the zoom unit 100.

[0075] Secondly, please refer to Figures 1 to 4 This application also provides a zoom camera module 4, including a front lens group 200, a rear lens group 300, a first lens body 112, and the aforementioned zoom unit 100. The front lens group 200 and the rear lens group 300 are spaced apart along a first direction X. The zoom unit 100 includes a movable frame 111 for mounting the first lens body 112 and a drive assembly 120. The drive assembly 120 drives the movable frame 111 to slide so that the first lens body 112 is slidably disposed between the front lens group 200 and the rear lens group 300, thereby realizing focusing.

[0076] The movable frame 111 and the first mirror body 112 can form a movable mirror group 110.

[0077] In some embodiments, please refer to Figure 3 and Figure 4 The zoom camera module 4 includes a fixed frame 400, with the front lens group 200 and the rear lens group 300 both fixed to the fixed frame 400. The fixed frame 400 has a mating hole 410, and the movable frame 111 forms an axial hole fit with the mating hole 410. By forming an axial hole fit between the movable frame 111 and the mating hole 410, the fixed frame 400 guides the movement of the movable frame 111, allowing the movable frame 111 to maintain its movement along the main optical axis of the zoom camera module 4, thus achieving better imaging results.

[0078] In some embodiments, please refer to Figure 2 , Figure 4 and Figure 5 The peripheral sidewall of the fixed frame 400 has a guide groove 420 communicating with the mating hole 410; the movable frame 111 includes a sliding part 1114 abutting between the pressing member 122 and the elastic structure 130 and a mounting part 1115 for mounting the first mirror body 112. The mounting part 1115 forms a shaft hole fit with the mating hole 410, and the sliding part 1114 slides with the guide groove 420. The above arrangement allows the mating hole 410, the guide groove 420 and the drive assembly 120 to guide and maintain the movable frame 111 at different positions, thereby further ensuring that the movable frame 111 can maintain movement along the first direction X.

[0079] As an example, please see Figure 4 and Figure 5 The sliding part 1114 has a cuboid block structure, and the guide groove 420 extends along the first direction X. The guide groove 420 is a rectangular groove. The sliding part 1114 slides and abuts against the guide groove 420 on opposite sides along the second direction Y, thereby guiding the sliding of the sliding part 1114. In addition, the sliding part 1114 is connected to the mounting part 1115 along the third direction Z. The first direction X, the second direction Y, and the third direction Z are all perpendicular to each other.

[0080] In some embodiments, please refer to Figure 3 and Figure 4 The front lens group 200 includes a front frame 210 and a second lens body 220, and the rear lens group 300 includes a third lens body 310. The third lens body 310 is mounted on a fixed frame 400. The front frame 210 is fixedly sleeved with the fixed frame 400, and the second lens body 220 is mounted on the front frame 210. The mounting part 1115 of the movable frame 111 is slidably disposed in the fixed frame 400. Both the front frame 210 and the fixed frame 400 are cylindrical structures, and the mounting part 1115 of the movable frame 111 is also a cylindrical structure. The front frame 210 and the fixed frame 400 are cylindrically sleeved, and the movable frame 111 and the fixed frame 400 are cylindrically slidingly fitted. This arrangement easily ensures the coaxiality of each lens group. Simultaneously, it reduces the manufacturing difficulty of each lens group, ensures coaxiality and eccentricity between lens groups, and minimizes focal point shift during zooming.

[0081] In some embodiments, please refer to Figure 3 and Figure 4 The mounting bracket 140 and the fixing bracket 400 are detachably connected. This arrangement allows the zoom unit 100, the front lens group 200, and the rear lens group 300 to be completely disassembled during subsequent maintenance of the zoom camera module 4, which is more conducive to later maintenance.

[0082] Please see Figure 6 and Figure 7 The endoscope provided in the embodiments of this application will now be described in detail. The endoscope includes a connecting part 1, an operating part 2, and an insertion part 3. The insertion part 3, the operating part 2, and the connecting part 1 are connected in sequence. The insertion part 3 is used to be inserted into the patient's body, and the operator controls the operation of the insertion part 3 in the patient's body through the operating part 2.

[0083] In addition, the endoscope also includes a zoom camera module 4, a light source assembly, and a tubing assembly. The zoom camera module 4 is used to acquire optical images of the lesion site in the human body, and the light source assembly is used for illumination to facilitate the acquisition of optical images by the zoom camera module 4. The tubing assembly can be used to deliver water and air to the tip of the insertion section 3 for cleaning the light source assembly and the zoom camera module 4. The tubing assembly can also be used for cleaning and inflating the human digestive tract, delivering tools to the tip of the insertion section 3 for surgical procedures, or aspirating tissue fluid from the patient. The connecting section 1 is used for communication between the zoom camera module 4 and the image processing equipment, for electrical connection between the light source assembly and the light source equipment, and for connection between the tubing assembly and water / air sources.

[0084] The endoscopic system provided in this application embodiment will now be described in detail. The endoscopic system includes an image processing device, a light source device, and an endoscope. The endoscope is equipped with a zoom camera module 4 and a light source assembly. The light source device provides light to the light source assembly in the endoscope to ensure that the endoscope can acquire images of lesions in the human body. The image processing device is communicatively connected to the zoom camera module 4 in the endoscope. The image processing device receives optical image information transmitted from the zoom camera module 4 and processes the optical image information. The display device is communicatively connected to the image processing device and displays the processed optical image for the doctor to observe and assist in operation.

[0085] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A zoom unit (100), used in the zoom camera module (4) of an endoscope to achieve zooming of the endoscope, characterized in that, The zoom unit (100) includes a movable frame (111) for mounting the first lens body (112) and a drive assembly (120) for driving the movable frame (111) to move along a first direction (X); The movable frame (111) has a first surface (1111) and a second surface (1112) that are oppositely arranged along the first direction (X); The drive assembly (120) includes a flexible drive rope (121), a pressing member (122), and an elastic structure (130); the elastic structure (130) abuts against the first surface (1111) of the movable frame (111) along the first direction (X); the flexible drive rope (121) is fixedly connected to the pressing member (122); and the pressing member (122) abuts against the second surface (1112) of the movable frame (111) along the first direction (X) under the tension of the flexible drive rope (121).

2. The zoom unit (100) as described in claim 1, characterized in that, The elastic structure (130) and the movable frame (111) are in planar contact, and the first surface (1111) is a plane perpendicular to the first direction (X); And / or, the pressing member (122) abuts against the movable frame (111) in a planar contact, and the second surface (1112) is a plane perpendicular to the first direction (X).

3. The zoom unit (100) as described in claim 1, characterized in that, The movable frame (111) has a first mounting hole (1113) extending along the first direction (X); The pressing member (122) includes a sleeve portion (1222) and an abutment portion (1221) connected to each other. The abutment portion (1221) abuts against the second surface (1112), and the sleeve portion (1222) is inserted into the first assembly hole (1113). The outer peripheral surface of the sleeve portion (1222) and the inner peripheral surface of the first assembly hole (1113) have a first gap.

4. The zoom unit (100) as described in claim 1 or 2, characterized in that, The elastic structure (130) includes an elastic element (123) and a guide element (124), wherein the elastic element (123) elastically abuts the guide element (124) against the first surface (1111) of the movable frame (111).

5. The zoom unit (100) as described in claim 4, characterized in that, The movable frame (111) has a first mounting hole (1113) extending through the first direction (X), and the guide (124) has a second mounting hole (1242) at its end facing the movable frame (111). The pressing member (122) includes a sleeve portion (1222) and an abutment portion (1221) connected to each other. The abutment portion (1221) abuts against the second surface (1112). The sleeve portion (1222) is respectively inserted into the first assembly hole (1113) and the second assembly hole (1242). The outer peripheral surface of the sleeve portion (1222) has a first gap with the inner peripheral surface of the first assembly hole (1113), and the outer peripheral surface of the sleeve portion (1222) has a second gap with the inner peripheral surface of the second assembly hole (1242).

6. The zoom unit (100) as described in claim 4, characterized in that, The zoom unit (100) also includes a hollow mounting bracket (140), and the guide member (124) is slidably disposed in the mounting bracket (140). The outer side of the guide member (124) is guided and engaged with the inner side of the mounting bracket (140).

7. The zoom unit (100) as described in claim 6, characterized in that, A sealing ring (150) abuts between the outer side of the guide (124) and the inner side of the mounting bracket (140).

8. The zoom unit (100) as claimed in claim 6, characterized in that, The elastic element (123) is a cylindrical spring, and the cylindrical spring forms a guiding engagement with the guide element (124); And / or, the cylindrical spring forms a guiding engagement with the mounting bracket (140); And / or, the inner cavity of the mounting bracket (140) is provided with a mating part for forming a guiding engagement with the cylindrical spring.

9. The zoom unit (100) as claimed in claim 6, characterized in that, The zoom unit (100) further includes an adjusting member (125), and the elastic member (123) abuts between the adjusting member (125) and the guide member (124). The position of the adjusting member (125) on the mounting bracket (140) is adjustable to adjust the initial length of the elastic member (123).

10. The zoom unit (100) as claimed in any one of claims 1 to 3, characterized in that, The elastic structure (130) includes an elastic element (123) that abuts against the first surface (1111) of the movable frame (111).

11. A zoom camera module (4), characterized in that, The device includes a front lens group (200), a rear lens group (300), a first lens body (112), and a zoom unit (100) as described in any one of claims 1 to 10. The front lens group (200) and the rear lens group (300) are spaced apart along the first direction (X). The zoom unit (100) includes a movable frame (111) for mounting the first lens body (112) and a drive assembly (120). The drive assembly (120) drives the movable frame (111) to slide so that the first lens body (112) is slidably disposed between the front lens group (200) and the rear lens group (300).

12. The zoom camera module (4) as described in claim 11, characterized in that, The zoom camera module (4) includes a fixed frame (400), the front lens group (200) and the rear lens group (300) are both fixed to the fixed frame (400), the fixed frame (400) has a mating hole (410), and the movable frame (111) forms a shaft hole mating with the mating hole (410).

13. The zoom camera module (4) as described in claim 12, characterized in that, The peripheral sidewall of the fixed frame (400) has a guide groove (420) communicating with the mating hole (410); the movable frame (111) includes a sliding part (1114) abutting between the pressing member (122) and the elastic structure (130) and a mounting part (1115) for mounting the first mirror body (112), the mounting part (1115) forming a shaft hole fit with the mating hole (410), and the sliding part (1114) slidingly fitting with the guide groove (420).

14. An endoscope, characterized in that, It includes a connecting part (1), an operating part (2), an insertion part (3), and a zoom camera module (4) as described in any one of claims 11 to 13.

15. An endoscope system, characterized in that, It includes image processing equipment, light source equipment, and the endoscope as described in claim 14.

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