Endoscope camera and endoscope

Abstract

The utility model belongs to the technical field of endoscopes, and provides an endoscope camera and an endoscope, the endoscope camera comprises: a main lens barrel, one end of which is provided with a fixed lens group; the movable lens cone is arranged in the main lens cone, and a movable lens group is mounted in the movable lens cone; the sleeve is arranged outside the main lens cone in a sleeving manner; the focusing knob is sleeved outside the sleeve and is in threaded connection with the sleeve; and the transmission mechanism is connected with the main lens cone and the movable lens cone, and the transmission mechanism is used for converting the rotation of the focusing knob into the linear motion of the movable lens cone, so that the movable lens group is close to or far away from the fixed lens group along the focusing direction. By rotating the focusing knob, under the action of the transmission mechanism, the rotation of the focusing knob is converted into the movement of the sleeve in the focusing direction, and the movable lens cone and the movable lens group connected into the movable lens cone axially move in the main lens cone and do not relatively rotate, so that the lens groups are ensured not to be eccentric while focusing.

Description

Technical Field

[0001] The utility model belongs to the technical field of endoscopes, and particularly relates to an endoscope camera and an endoscope. Background Art

[0002] In the medical field, endoscopes have obvious advantages such as direct vision imaging, convenient operation, integrated diagnosis and treatment, and minimally invasive treatment during examination and treatment, and are widely used in clinical practice.

[0003] In the related art, rigid endoscopes are mainly used for the diagnosis and treatment of lesions in natural cavities on the superficial and shallow parts of the human body surface and through punctured oral cavities, such as cystoscopes and hysteroscopes. The rigid endoscope cannot be bent during operation. The rigid endoscope includes a camera, and the camera includes components such as an optical module and a chip module. The optical components in the camera mainly include a fixed lens group and a movable lens group. The movable lens group is used to adjust the working distance of the camera. Most of the mechanism solutions for driving the movable lens group to move in the related art adopt a spiral groove structure, which is prone to eccentricity during the adjustment process, thereby affecting the focusing effect. Summary of the Utility Model

[0004] In view of this, the utility model provides an endoscope camera and an endoscope to solve the problem that the spiral groove structure in the related art is prone to eccentricity when adjusting the focal length.

[0005] On the one hand, the utility model provides an endoscope camera, and the endoscope camera includes: a main lens barrel, with a fixed lens group provided at one end; a movable lens barrel, arranged inside the main lens barrel, and a movable lens group is installed inside the movable lens barrel; a sleeve, sleeved outside the main lens barrel; a focusing knob, sleeved outside the sleeve and threadedly connected to the sleeve; a transmission mechanism, connected to the main lens barrel and the movable lens barrel, and the transmission mechanism is used to convert the rotation of the focusing knob into a linear motion of the movable lens barrel, so that the movable lens group approaches or moves away from the fixed lens group along the focusing direction.

[0006] The beneficial effect is that by rotating the focusing knob, under the action of the transmission mechanism, the rotation of the focusing knob is converted into the movement of the sleeve in the focusing direction, and the movable lens barrel and the movable lens group connected to the inside of the movable lens barrel move axially inside the main lens barrel without relative rotation, ensuring that there is no eccentricity between the lens groups while focusing.

[0007] As an optional implementation manner, the transmission mechanism includes: a transmission component, arranged between the main lens barrel and the sleeve, so that the sleeve and the main lens barrel move relatively in the focusing direction; a connecting piece, connecting the sleeve and the movable lens barrel.

[0008] The beneficial effects are as follows. By arranging the transmission component between the outer wall of the main lens barrel and the inner wall of the sleeve, when the focusing knob is rotated, the transmission component can restrict the rotation of the sleeve and convert the rotation of the focusing knob into the linear motion of the sleeve. The linear motion of the sleeve in the focusing direction is realized through the transmission component, and the structure is simple and reliable.

[0009] As an optional implementation manner, the transmission component includes: a convex portion provided on the outer surface of the main lens barrel or the inner surface of the sleeve; a groove provided on the inner surface of the sleeve or the outer surface of the main lens barrel; wherein, the convex portion and the groove respectively extend in the focusing direction, and the groove is in interference fit with the convex portion.

[0010] The beneficial effects are as follows. Through the cooperation of the convex portion and the groove, not only can the rotation of the sleeve be restricted and it can only move axially, but also the convex portion plays a guiding role in the axial movement of the sleeve.

[0011] As an optional implementation manner, the grooves and the convex portions are respectively provided in multiple numbers in one-to-one correspondence.

[0012] The beneficial effects are as follows. It can make the sleeve move more smoothly axially without eccentricity.

[0013] As an optional implementation manner, the connecting member is connected to the sleeve, and the connecting member penetrates through the main lens barrel and is connected to the movable lens barrel.

[0014] The beneficial effects are as follows. By connecting the movable lens barrel and the sleeve through the connecting member, the movable lens barrel can move synchronously with the sleeve in the focusing direction, so that the movable lens group mounted on the movable lens barrel can approach or move away from the fixed lens group in the focusing direction, thereby achieving the purpose of focusing.

[0015] As an optional implementation manner, a sliding groove is provided on the barrel wall of the main lens barrel, and the connecting member is arranged in the sliding groove.

[0016] The beneficial effects are as follows. The sliding groove can play a role in avoiding the connecting member. The width of the sliding groove can match the connecting member, so that the connecting member can slide along the inner wall of the sliding groove and will not get stuck during the sliding process.

[0017] As an optional implementation manner, a connecting hole is provided on the side wall of the sleeve, and the connecting member includes a connecting rod, and one end of the connecting rod is threadedly connected to the connecting hole.

[0018] The beneficial effects are as follows. By threadedly connecting the connecting rod to the sleeve, the installation structure is further simplified, and the manufacturing process of the camera is simplified.

[0019] As an alternative embodiment, the endoscope camera further includes an axial limiting component for limiting the axial movement of the focusing knob.

[0020] The beneficial effect is that it can further ensure that the focusing rotation does not undergo axial movement during rotation.

[0021] As an alternative embodiment, the axial limiting component includes: a first limiting cover provided at the end of the main lens barrel; a second limiting cover sleeved outside the sleeve; wherein, the focusing knob is provided between the first limiting cover and the second limiting cover.

[0022] On the other hand, the present invention also provides an endoscope including the endoscope camera according to any one of the above.

[0023] The beneficial effect is that since the above endoscope includes the endoscope camera according to any one of the above, the above endoscope has all the beneficial effects of the above endoscope camera, which will not be elaborated here. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a cross-sectional structural schematic diagram of the endoscope camera according to an embodiment of the present invention;

[0026] Figure 2 It is Figure 1 The enlarged structural schematic diagram at A in

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the main lens barrel of the endoscope camera according to an embodiment of the present invention;

[0028] Figure 4 It is a three-dimensional structural schematic diagram of the sleeve of the endoscope camera according to an embodiment of the present invention;

[0029] Figure 5 It is a partial cross-sectional structural schematic diagram of the endoscope camera according to an embodiment of the present invention;

[0030] Figure 6 It is a three-dimensional structural schematic diagram of the endoscope camera according to an embodiment of the present invention.

[0031] Explanation of the Reference Numerals:

[0032] 100, Endoscope camera; 110, Main lens barrel; 1101, Slide groove; 120, Fixed lens group; 130, Movable lens barrel; 140, Movable lens group; 150, Sleeve; 1501, Connecting hole; 1502, Protrusion; 160, Focus adjustment knob; 171, Protruding part; 172, Groove; 173, Connecting piece; 180, Axial limiting component; 181, First limiting cover; 182, Second limiting cover; X, Focus adjustment direction. Detailed implementation mode

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] The following is combined with Figures 1 to 6 , to describe the embodiments of the present utility model.

[0035] As Figure 1 and Figure 6 shown, according to an embodiment of the present utility model, an endoscope camera 100 is provided. The endoscope camera 100 includes a main lens barrel 110, a movable lens barrel 130, a sleeve 150, a focus adjustment knob 160 and a transmission mechanism. A fixed lens group 120 is provided at one end of the main lens barrel 110. The movable lens barrel 130 is disposed inside the main lens barrel 110. A movable lens group 140 is installed inside the movable lens barrel 130. The sleeve 150 is sleeved outside the main lens barrel 110. The focus adjustment knob 160 is sleeved outside the sleeve 150 and is threadedly connected to the sleeve 150. The transmission mechanism is connected to the main lens barrel 110 and the movable lens barrel 130. The transmission mechanism is configured to convert the rotation of the focus adjustment knob 160 into a linear motion of the movable lens barrel 130, so that the movable lens group 140 approaches or moves away from the fixed lens group 120 along the focus adjustment direction X.

[0036] The above-mentioned sleeve 150 has a straight tube structure, and the sleeve 150 is a cylinder. As Figure 2 and Figure 4 shown, one end of the sleeve 150 is provided with a step, so that the outer wall of the sleeve bulges outwards circumferentially at this end, forming a protrusion 1502. The protrusion 1502 has an external thread to be threadedly connected to the focus adjustment knob 160. Understandably, the focus adjustment knob 160 has a hollow cavity that penetrates through the front and rear, so as to be sleeved outside the sleeve 150. The hollow cavity has a circumferential recess, and the circumferential recess has an internal thread, so that the focus adjustment knob 160 can be threadedly connected to the protrusion 1502 of the sleeve 150 through the recess.

[0037] A threaded connection structure with a concave-convex fit is provided between the sleeve 150 and the focusing knob 160, which can prevent the focusing knob 160 from axially displacing when it rotates.

[0038] In addition, on the outer wall of the end of the main lens barrel 110 near the fixed lens group 120, there is a circumferentially recessed portion, and the recessed portion forms a step. Thus, a circumferentially protruding portion 171 is provided on the inner side wall of one end of the focusing knob 160. When the focusing knob 160 is installed on the sleeve 150, the circumferentially protruding portion 171 of the focusing knob 160 abuts against the step formed by the circumferentially recessed portion, thereby limiting the axial displacement of the focusing knob 160.

[0039] It can be understood that since the focusing knob 160, the sleeve 150, and the main lens barrel 110 all have a cylindrical structure, the axial direction is the focusing direction X.

[0040] It can be understood that the inner diameter of the focusing knob 160 is not consistent, and the outer diameter of the main lens barrel 110 is not consistent.

[0041] The sleeve 150 is slidably disposed on the outer periphery of the main lens barrel 110. The sliding direction of the sleeve 150 is the focusing direction X, that is, the sleeve 150 is slidably disposed on the outer wall of the main lens barrel 110 in the focusing direction X, so that the movable lens barrel 130 can be driven by the transmission mechanism to axially displace in the focusing direction X.

[0042] When the operator rotates the focusing knob 160, under the action of the transmission mechanism, the rotation of the focusing knob 160 is converted into the axial movement of the sleeve 150, and the movable lens barrel 130 and the movable lens group 140 connected to the movable lens barrel 130 axially move in the main lens barrel 110 without relative rotation, ensuring that the lens groups are not eccentric during focusing.

[0043] Among them, in order to facilitate the operation of the focusing knob 160, a plurality of concave-convex alternating structures are provided around the axis on the outer side surface of the focusing knob 160, and the concave-convex alternating structures can be smoothly transitioned.

[0044] In another embodiment, as Figure 3 and Figure 4 shown, the transmission mechanism includes a transmission component and a connecting piece 173. The transmission component is disposed between the main lens barrel 110 and the sleeve 150 to enable relative movement between the sleeve 150 and the main lens barrel 110 in the focusing direction X, and the connecting piece 173 connects the sleeve 150 and the movable lens barrel 130.

[0045] The above-mentioned transmission assembly is arranged between the outer wall of the main lens barrel 110 and the inner wall of the sleeve 150. When the focusing knob 160 is rotated, the transmission assembly can limit the rotation of the sleeve 150 and convert the rotation of the focusing knob 160 into a linear motion of the sleeve 150. The linear motion of the sleeve 150 in the focusing direction X is realized through the transmission assembly, and the structure is simple and reliable.

[0046] Specifically, the transmission assembly includes a protrusion 171 and a groove 172. The protrusion 171 is provided on the outer surface of the main lens barrel 110 or the inner surface of the sleeve 150; the groove 172 is provided on the inner surface of the sleeve 150 or the outer surface of the main lens barrel 110. The protrusion 171 and the groove 172 extend in the focusing direction X respectively, and the groove 172 is in interference fit with the protrusion 171.

[0047] Understandably, the protrusion 171 is provided on the outer wall of the main lens barrel 110. The protrusion 171 is strip-shaped and extends in the axial direction of the main lens barrel 110. Similarly, the groove 172 is provided on the inner wall of the sleeve 150. The groove 172 is also strip-shaped and extends in the axial direction of the sleeve 150. Or the positions of the protrusion 171 and the groove 172 are exchanged with each other. During assembly, the sleeve 150 is sleeved outside the main lens barrel 110, and the protrusion 171 is in interference fit with the groove 172, so that the groove 172 can slide along the protrusion 171. The cooperation between the protrusion 171 and the groove 172 can not only limit the rotation of the sleeve 150 and enable it to move only axially, but also the protrusion 171 plays a guiding role in the axial movement of the sleeve 150. Among them, the groove 172 penetrates axially to the end faces at both ends of the sleeve 150.

[0048] Of course, the protrusion 171 can also be provided on the inner surface of the sleeve 150 and extend in the focusing direction X, and the groove 172 is provided on the outer surface of the main lens barrel 110 and extends in the focusing direction X. The groove 172 is in interference fit with the protrusion 171, which will not be elaborated here.

[0049] In addition, a limiting plate is provided at one end of the main lens barrel 110, and the limiting plate can limit the axial movement distance of the sleeve 150.

[0050] Specifically, the groove 172 and the protrusion 171 are respectively provided in multiple numbers in one-to-one correspondence, which can make the sleeve 150 move more smoothly axially and will not be eccentric. Among them, the multiple grooves 172 and the multiple protrusions 171 can be evenly distributed respectively. For example, the groove 172 and the protrusion 171 can be respectively provided in three numbers. According to the fact that three points can determine a plane, it is ensured that the sleeve 150 moves smoothly in the focusing direction X and will not be eccentric. Of course, the groove 172 and the protrusion 171 can also be respectively provided in four, five, etc.

[0051] Further, the connecting member 173 is connected to the sleeve 150, and the connecting member 173 passes through the main lens barrel 110 and is connected to the movable lens barrel 130.

[0052] Since the connecting member 173 is used to connect the movable lens barrel 130 and the sleeve 150 so that the movable lens barrel 130 and the sleeve 150 can move synchronously in the focusing direction X, therefore, the connecting member 173 can be connected to the sleeve 150, and then pass through the main lens barrel 110 and be connected to the movable lens barrel 130. By connecting the movable lens barrel 130 and the sleeve 150 through the connecting member 173, the movable lens barrel 130 can be displaced synchronously with the sleeve 150 in the focusing direction X, so that the movable lens group 140 mounted on the movable lens barrel 130 can approach or move away from the fixed lens group 120 in the focusing direction X, thus achieving the purpose of focusing.

[0053] Specifically, a sliding groove 1101 is provided on the barrel wall of the main lens barrel 110, the connecting member 173 is arranged in the sliding groove 1101, and the connecting member 173 can move along the sliding groove 1101 in the focusing direction X. The sliding groove 1101 is opened on the side wall of the main lens barrel 110 so that the connecting member 173 can pass through and be connected to the movable lens barrel 130. Among them, the sliding groove 1101 has a certain length in the focusing direction X, so that the sliding groove 1101 can play a role in avoiding the connecting member 173 during the process of driving the movable lens barrel 130 to move. In addition, the width of the sliding groove 1101 can match the connecting member 173, so that the connecting member 173 can slide along the inner wall of the sliding groove 1101 and the connecting member 173 will not get stuck during the sliding process.

[0054] Therefore, the sliding groove 1101 also plays a role in guiding and limiting the connecting member 173. Among them, the two inner walls sliding in the focusing direction X can limit the moving distance of the connecting member 173.

[0055] More specifically, a connecting hole 1501 is provided on the side wall of the sleeve 150, the connecting member 173 is a connecting rod, and one end of the connecting rod is threadedly connected to the connecting hole 1501.

[0056] Among them, the connecting rod can be a screw or a screw rod. External threads are provided at one end of the connecting rod, and the connecting hole 1501 is a threaded hole, so that the connecting rod can be detachably connected to the side wall of the sleeve 150. The other end of the connecting rod can also be threadedly connected to the movable lens barrel 130, or the other end of the connecting rod is welded or riveted to the movable lens barrel 130, which is not specifically limited here.

[0057] The operator rotates the focusing knob 160. Under the limiting action of the convex part 171 and the groove 172, the rotation of the focusing knob 160 is converted into the axial movement of the sleeve 150. Driven by the pin, the movable lens barrel 130 and the movable lens group 140 axially move in the main lens barrel 110 without relative rotation, ensuring that the lens groups are not eccentric during focusing.

[0058] In another embodiment, as Figure 5 shown, the endoscope camera 100 further includes an axial limiting component 180, and the axial limiting component 180 is used to limit the axial movement of the focusing knob 160.

[0059] In order to further ensure that the focusing rotation does not have axial movement during rotation, the axial limiting component 180 is provided.

[0060] Specifically, continuing to combine with Figure 5 shown, the axial limiting component 180 includes a first limiting cover 181 and a second limiting cover 182. The first limiting cover 181 is arranged at the end of the main lens barrel 110, and the second limiting cover 182 is sleeved outside the sleeve 150. Among them, the focusing knob 160 is arranged between the first limiting cover 181 and the second limiting cover 182.

[0061] The first limiting cover 181 is arranged at the end of the main lens barrel 110. The first limiting cover 181 forms a limiting end face, and the limiting end face abuts against the end face of one end of the focusing knob 160 and the step face of the main lens barrel 110. The second limiting cover 182 is arranged outside the sleeve 150, and the end face of the second limiting cover 182 can abut against the other end of the focusing knob 160.

[0062] According to an embodiment of the present invention, an endoscope is further provided. The endoscope includes the endoscope camera 100 of any one of the above.

[0063] The endoscope further includes a light source, a light guide beam, a rigid endoscope, an optical bayonet, a camera host and a display. The camera includes components such as an optical module and a chip module. The optical components in the camera include a fixed lens group 120 and a movable lens group 140, and the movable lens group 140 is used to adjust the working distance of the camera.

[0064] As Figure 1 and Figure 6 shown, the camera further includes a handle, a rear lens group fixing seat, a rear lens group, a photoelectric sensor, an image module bracket, an image module, a key module and a soft rubber key, which will not be elaborated here.

[0065] The focusing knob 160 is threadedly connected to the sleeve 150. The sleeve 150 is slidably connected to the main lens barrel 110 in the axial direction, and the sleeve 150 is connected to the movable lens barrel 130 through the connecting member 173, which reduces the processing difficulty, will not be eccentric during the focusing process, and reduces the problem that the operation feel is affected due to poor movement caused by friction.

[0066] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the creation of the present utility model.

Claims

1. An endoscope camera, characterized in that, The endoscope camera (100) includes: A main barrel (110) with a fixed lens group (120) provided at one end; A movable barrel (130) disposed within the main barrel (110), and a movable lens group (140) is installed within the movable barrel (130); A sleeve (150) sleeved outside the main barrel (110); A focusing knob (160) sleeved outside the sleeve (150) and threadedly connected to the sleeve (150); A transmission mechanism connected to the main barrel (110) and the movable barrel (130), and the transmission mechanism is configured to convert the rotation of the focusing knob (160) into a linear motion of the movable barrel (130), so that the movable lens group (140) approaches or moves away from the fixed lens group (120) along the focusing direction (X).

2. The endoscopic camera according to claim 1, characterized in that, The transmission mechanism includes: A transmission component disposed between the main barrel (110) and the sleeve (150) to enable relative movement between the sleeve (150) and the main barrel (110) in the focusing direction (X); A connecting member (173) connecting the sleeve (150) and the movable barrel (130).

3. The endoscope camera according to claim 2, characterized in that, The transmission component includes A protrusion (171) provided on the outer surface of the main barrel (110) or on the inner surface of the sleeve (150); A groove (172) provided on the inner surface of the sleeve (150) or on the outer surface of the main barrel (110); Wherein, the protrusion (171) and the groove (172) respectively extend in the focusing direction (X), and the groove (172) is in mating insertion with the protrusion (171).

4. The endoscope camera according to claim 3, characterized in that, The groove (172) and the protrusion (171) are respectively provided in multiple numbers in one-to-one correspondence.

5. The endoscopic camera according to any one of claims 2 to 4, characterized in that, The connecting member (173) is connected to the sleeve (150), and the connecting member (173) penetrates through the main barrel (110) and is connected to the movable barrel (130).

6. The endoscopic camera according to claim 5, characterized in that, A sliding groove (1101) is provided on the barrel wall of the main barrel (110), and the connecting member (173) is disposed within the sliding groove (1101).

7. The endoscopic camera according to claim 5, characterized in that, A connection hole (1501) is provided on the side wall of the sleeve (150), and the connecting member (173) includes a connecting rod, and one end of the connecting rod is threadedly connected to the connection hole (1501).

8. The endoscope camera according to any one of claims 1 to 4, characterized in that The endoscope camera (100) further includes an axial limiting component (180), and the axial limiting component (180) is configured to limit the axial movement of the focusing knob (160).

9. The endoscopic camera according to claim 8, wherein The axial limiting component (180) includes: A first limiting cover (181) disposed at the end of the main barrel (110); A second limiting cover (182) sleeved outside the sleeve (150); The focusing knob (160) is disposed between the first limiting cover (181) and the second limiting cover (182).

10. An endoscope, characterized in that, Including the endoscope camera (100) according to any one of claims 1 to 9.

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