Optical endoscope adapter

Abstract

The utility model relates to an optical endoscope adapter, which comprises a main barrel, a bayonet base and a connecting seat, the bayonet base and the connecting seat are respectively connected to the front end and the rear end of the main barrel, a lens barrel is coaxially arranged in the main barrel, an optical component is arranged in the lens barrel, a focusing ring is sleeved on the outer side of the main barrel, sealing rings are respectively sleeved on the outer sides of the front end and the rear end of the main barrel, and the sealing rings are arranged on the bayonet base and the connecting seat. The front end and the rear end of the inner side face of the focusing ring are each provided with an annular groove used for containing a sealing ring, and an annular gasket is arranged between each sealing ring and the groove bottom of the corresponding annular groove. The silence focusing ring is reasonable in structural design, not only can avoid axial movement of the focusing ring, but also can realize complete silence during focusing of the focusing ring.

Description

Technical fields:

[0001] This utility model relates to an optical endoscope adapter. Background technology:

[0002] Currently, some medical devices, such as endoscopes, require optical adapters to connect the rigid endoscope and the camera. Existing optical adapters typically include a bayonet, endoscope barrel, connecting base, and focusing ring. However, the current focusing ring is fixed between the bayonet and the connecting base, and the connection is sealed with a sealing ring. Due to the characteristics of milling processes, the movement of the milling cutter has certain tolerances, and the dimensions of the sealing ring also have certain tolerances. This leads to inconsistent product quality, causing the focusing ring to move axially and producing mechanical friction noise during adjustment. Utility Model Content:

[0003] This invention addresses the problems existing in the prior art by providing an optical endoscope adapter.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an optical endoscope adapter, including a main tube, a bayonet base and a connecting seat respectively connected to the front and rear ends of the main tube, an endoscope tube coaxially arranged inside the main tube, an optical component arranged inside the endoscope tube, a focusing ring sleeved on the outer side of the main tube, a sealing ring sleeved on the outer side of the front and rear ends of the main tube, and an annular groove for accommodating the sealing ring provided at both the front and rear ends of the inner side of the focusing ring, and an annular gasket provided between the sealing ring and the bottom of the annular groove.

[0005] Furthermore, the main barrel is provided with an arc-shaped groove on its circumferential side. The arc-shaped groove runs radially through the main barrel, and a guide pin runs through the arc-shaped groove. The guide pin slides in conjunction with the arc-shaped groove. The inner end of the guide pin is threaded to the circumferential side of the lens barrel, and the outer end of the guide pin is threaded to the focusing ring. When the focusing ring rotates, it drives the guide pin to slide along the arc-shaped groove. The guide pin drives the lens barrel to move axially along the main barrel to achieve focusing.

[0006] Furthermore, there are gaps between the front end of the focusing ring and the bayonet base, and between the rear end of the focusing ring and the connecting seat, so that the focusing ring does not come into contact with the bayonet base and the connecting seat when it is rotated.

[0007] Furthermore, the thickness of the gasket is 0.1 to 0.5 mm.

[0008] Furthermore, the gasket is made of SUS304 material.

[0009] Compared with the prior art, the present invention has the following advantages: The present invention has a reasonable structural design, which can not only avoid axial movement of the focusing ring, but also achieve complete silence when the focusing ring is focusing. Attached image description:

[0010] Figure 1 This is a schematic diagram of the front half-section structure of an embodiment of this utility model;

[0011] Figure 2 This is a partial enlarged view of an embodiment of the present invention without the gasket;

[0012] Figure 3 This is a partial enlarged view of an embodiment of the present invention with the gasket installed.

[0013] In the picture:

[0014] 1-Mount base; 2-Main tube; 3-Connecting seat; 4-Focusing ring; 5-Sealing ring; 6-Gasket; 7-Guide pin; 8-Tube tube; 9-Annular groove; 10-Arc-shaped slide; 11-Optical components. Detailed implementation method:

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "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 utility model 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 utility model.

[0017] like Figures 1-3 As shown, this utility model discloses an optical endoscope adapter, including a main tube 2, a bayonet base 1, a connecting seat 3, an endoscope tube 8, and an optical component 11. The bayonet base 1 and the connecting seat 3 are threaded to the front and rear ends of the main tube 2, respectively. The endoscope tube 8 is coaxially arranged inside the main tube 2, and the optical component 11 is arranged inside the endoscope tube 8. A focusing ring 4 is rotatably sleeved on the outer side of the main tube 2. The focusing ring is coaxially arranged with the main tube. This part of the structure is the same as the existing optical adapter structure. The specific improvement is that: the front and rear ends of the main tube 2 are respectively sleeved with annular sealing rings 5. The inner circumferential side of the focusing ring 4 is provided with annular grooves 9 at the front and rear ends. The annular grooves 9 are used to accommodate the sealing rings 5 ​​in corresponding positions. An annular gasket 6 is provided between the sealing ring 5 and the bottom of the annular groove 9. The annular gasket is also sleeved on the outer side of the main tube like the sealing ring.

[0018] In this embodiment, an arc-shaped groove 10 is provided on the periphery of the main barrel 2. The arc-shaped groove 10 extends radially through the main barrel 2, and a guide pin 7 passes through the arc-shaped groove 10. The guide pin 7 slides in conjunction with the arc-shaped groove 10. The inner end of the guide pin 7 is threadedly connected to the periphery of the lens barrel 8, and the outer end of the guide pin 7 is threadedly connected to the focusing ring 4. When the focusing ring 4 rotates, it drives the guide pin 7 to slide along the arc-shaped groove 10. The guide pin 7 drives the lens barrel 8 to move forward and backward along the axis of the main barrel 2 to achieve focusing.

[0019] In this embodiment, there are gaps between the front end of the focusing ring 4 and the bayonet base 1, and between the rear end of the focusing ring 4 and the connecting seat 3, so that when the focusing ring is rotated, the focusing ring 4 does not contact the bayonet base 1 and the connecting seat 3, that is, the focusing ring 4 does not rub against the bayonet base 1 and the connecting seat 3.

[0020] In this embodiment, the thickness of the gasket 6 is 0.1–0.5 mm. It should be noted that gaskets of different thicknesses are used during assembly to accommodate different gaps.

[0021] In this embodiment, the gasket 6 is made of stainless steel SUS304, which has high strength and corrosion resistance.

[0022] The assembly method is as follows: (1) The main cylinder 2 and the connecting seat 3 are connected by threads. The sealing ring 5, the focusing ring 4, and the sealing ring 5 located on the rear side of the main cylinder 2 pass through the main cylinder in sequence from front to back. Finally, the front end of the main cylinder 2 is threadedly locked to the bayonet base 1; (2) Rotate the focusing ring 4 and observe whether the focusing ring 4 will move or produce friction noise. If the focusing ring 4 moves or produces friction noise when rotated, the bayonet base 1, the sealing ring 5 located on the front end of the main cylinder 2, and the focusing ring are removed from front to back. 4. Then, from front to back, install the gasket 6 at the rear end of the main tube 2, the focusing ring 4, the gasket 6 at the front end of the main tube 2, and the sealing ring 5 at the front end of the main tube 2 in sequence. Finally, lock the bayonet base 1 to the main tube 2. (3) Rotate the focusing ring 4 and observe whether the focusing ring 4 will move or produce friction noise. If the focusing ring 4 moves or produces friction noise when rotated, repeat the above steps to replace the gasket. The replacement order of the gasket 6 is from thin to thick until the focusing ring 4 does not move and does not produce friction noise.

[0023] The advantages of this invention are that it can not only avoid axial movement of the focusing ring, but also achieve complete silence when the focusing ring is focusing.

[0024] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0025] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0026] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An optical endoscope adapter, comprising a main tube, bayonet bases and connecting seats respectively connected to the front and rear ends of the main tube, wherein an endoscope tube is coaxially disposed inside the main tube, an optical component is disposed inside the endoscope tube, and a focusing ring is sleeved on the outer side of the main tube, characterized in that: The front and rear ends of the main cylinder are respectively fitted with sealing rings. The front and rear ends of the inner side of the focusing ring are provided with annular grooves for accommodating the sealing rings. An annular gasket is provided between the sealing ring and the bottom of the annular groove.

2. An optical endoscope adapter according to claim 1, characterized in that: The main tube has an arc-shaped groove on its circumference, which runs radially through the main tube. A guide pin runs through the arc-shaped groove and slides in the groove. The inner end of the guide pin is threaded to the circumference of the lens tube, and the outer end of the guide pin is threaded to the focusing ring. When the focusing ring rotates, it drives the guide pin to slide along the arc-shaped groove, and the guide pin drives the lens tube to move axially along the main tube to achieve focusing.

3. An optical endoscope adapter according to claim 1, characterized in that: There are gaps between the front end of the focusing ring and the bayonet base, and between the rear end of the focusing ring and the connecting seat, so that the focusing ring does not come into contact with the bayonet base and the connecting seat when it is rotated.

4. An optical endoscope adapter according to claim 1, characterized in that: The thickness of the gasket is 0.1 to 0.5 mm.

5. An optical endoscope adapter according to claim 1, characterized in that: The gasket is made of SUS304 material.

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