A rotating mechanism and endoscope with a rotation range greater than 360 degrees

Abstract

This utility model relates to a rotating mechanism with a rotation angle greater than 360 degrees and an endoscope, including a fixed base, a fixed base protrusion extending from the center of the top surface of the fixed base, and a rotating seat rotatably mounted on the fixed base protrusion opposite to the top surface of the fixed base protrusion; an annular groove is provided on the top surface of the fixed base protrusion, and a stop block is provided within the annular groove; a first arc-shaped groove and a cover plate covering the first arc-shaped groove are provided on the surface of the rotating seat corresponding to the top surface of the fixed base protrusion, and an arc-shaped through hole is provided on the cover plate; a first slider slides within the first arc-shaped groove, and a lower extension arm extends from the bottom surface of the first slider, passing through the arc-shaped through hole and sliding within the annular groove. An endoscope utilizing this rotating mechanism is also disclosed. This utility model can achieve a rotation angle greater than 360 degrees, eliminating blind spots for lateral viewing in endoscopes.

Description

Technical Field

[0001] This utility model relates to a rotation adjustment structure, and more particularly to a rotation mechanism with a rotation angle of more than 360 degrees and an endoscope. Background Technology

[0002] Rotating structures are common in mechanical devices. To prevent unlimited rotation, the rotation is usually limited. This means that existing rotating structures can only provide a rotational stroke of less than 360°, which cannot meet the needs of some applications requiring rotation of 360° or more. Especially for side-viewing industrial endoscopes, rotation less than 360° will create blind spots, which is detrimental to their use. Utility Model Content

[0003] To address the shortcomings of existing methods, this invention provides a rotating mechanism and endoscope with a rotation range of more than 360 degrees.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a rotating mechanism with a rotation angle greater than 360 degrees, including a fixed base, a fixed base protrusion extending from the center of the top surface of the fixed base, and a rotating seat rotatably disposed on the fixed base protrusion opposite to the top surface of the fixed base protrusion; an annular groove is provided on the top surface of the fixed base protrusion, and a stop block is disposed in the annular groove; a first arc-shaped groove and a cover plate covering the first arc-shaped groove are provided on the surface of the rotating seat corresponding to the top surface of the fixed base protrusion, and an arc-shaped through hole is provided on the cover plate; a first slider is slidably disposed in the first arc-shaped groove, and a lower extension arm extending from the bottom surface of the first slider through the arc-shaped through hole and sliding in the annular groove.

[0005] Preferably, the cover plate is provided with a second arc-shaped groove at a position corresponding to the first arc-shaped groove; the first slider is slidably disposed in the second arc-shaped groove and an upper extension arm extends from the top surface of the first slider to slide in the first arc-shaped groove; the arc-shaped through hole is disposed at the center of the bottom of the second arc-shaped groove and is coaxially disposed with the second arc-shaped groove.

[0006] Preferably, the first slider is an arc-shaped slider, and the upper extension arm and the lower extension arm are respectively disposed at the center of the top surface and the bottom surface of the first slider.

[0007] Preferably, the upper extension arm and / or the lower extension arm are provided with a limiting slider for limiting sliding.

[0008] Preferably, the sum of the travel angle of the first slider relative to the first arc-shaped groove and the travel angle of the first slider relative to the annular groove is not less than 360 degrees.

[0009] Preferably, the stroke angle range of the first slider relative to the first arc-shaped groove is 23 degrees to 25 degrees.

[0010] Preferably, the top surface of the fixed seat protrusion is provided with a fixed seat through hole that penetrates the fixed seat protrusion and the upper and lower surfaces of the fixed seat, and the annular groove is provided circumferentially along the fixed seat through hole; the rotating seat is provided with a rotating shaft that passes through the fixed seat through hole, and the rotating seat is provided with a rotating seat through hole that penetrates the rotating seat and the rotating shaft.

[0011] Preferably, a sealing ring is provided between the fixed seat protrusion and the rotating seat.

[0012] Preferably, the outer surface of the rotating seat is provided with anti-slip protrusions.

[0013] An endoscope includes a rotation mechanism of more than 360 degrees as described in any of the preceding claims, a rigid insertion tube, a probe for lateral detection disposed at the head of the rigid insertion tube, and a control handle. The fixed base is connected to the control handle. The tail end of the rigid insertion tube passes through a rotating base, a fixed base protrusion, and the fixed base in sequence. The probe is electrically connected to the control handle via a wire passing through the rigid insertion tube.

[0014] The beneficial effects of this utility model are as follows: This utility model limits the position by using a stop block and a first slider, and achieves a rotation of more than 360 degrees by rotating the rotating seat and the first slider, which also solves the problem of blind spots in the testing endoscope. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the endoscope according to an embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional schematic diagram of the endoscope control handle and rotating mechanism according to an embodiment of the present utility model;

[0017] Figure 3 This is an exploded structural diagram of the rotating mechanism according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the bottom surface of the rotating seat in an embodiment of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the rotating seat bottom surface with the first slider and cover plate installed in this embodiment of the utility model;

[0020] Figure 6 This is an example of the structure of the first slider in this embodiment of the present invention;

[0021] Component names and serial numbers in the diagram: 1-Fixed seat; 10-Fixed seat protrusion; 11-Annular groove; 12-Stop; 13-Fixed seat through hole; 2-Rotating seat; 20-First arc-shaped groove; 21-Rotating shaft; 22-Rotating seat through hole; 23-Anti-slip protrusion; 3-Cover plate; 30-Arc-shaped through hole; 31-Second arc-shaped groove; 4-First slider; 40-Lower extension arm; 41-Upper extension arm; 5-Limiting slider; 6-Sealing ring; 7-Rigid insertion tube; 8-Probe; 9-Control handle. Detailed Implementation

[0022] To more clearly illustrate the purpose, technical solution, and advantages of the embodiments of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. A clear and complete description will be provided. Obviously, the described embodiments are some, but not all, embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0023] Examples of embodiments of this utility model Figures 1 to 6As shown, a rotating mechanism with a rotation angle greater than 360 degrees includes a fixed base 1. A fixed base protrusion 10 extends from the center of the top surface of the fixed base 1. The fixed base protrusion 10 has a cylindrical structure and is coaxial with the fixed base 1. A rotating seat 2 is rotatably mounted on the fixed base protrusion 10, opposite to the top surface of the fixed base protrusion 10. This means the rotating seat 2 is located on the top surface of the fixed base protrusion 10. The rotating seat 2 is circular and positioned above the fixed base protrusion 10. The bottom surface of the rotating seat 2 is opposite to the top surface of the fixed base protrusion 10. A ring-shaped section extends downwards along the circumference of the bottom edge of the rotating seat 2. The sidewalls are extended to form a barrel-shaped structure, allowing the rotating seat 2 to be rotatably mounted on the fixed seat protrusion 10, thus making the connection between the rotating seat 2 and the rotating seat protrusion 10 more stable. An annular groove 11 is provided on the top surface of the fixed seat protrusion 10, and a stop 12 is provided within the annular groove 11. The annular groove 11 is arranged circumferentially along the fixed seat protrusion 10, and the stop 12 breaks the annular groove 11, transforming it into a curved groove with a central angle close to 360 degrees. The rotating seat 2 has a first arc-shaped groove 20 on its surface corresponding to the top surface of the fixed seat protrusion 10, and a cover is provided on the first arc-shaped groove 20. The cover plate 3 on the 0, that is, the first arc-shaped sliding groove 20 and the cover plate 3 are set on the bottom surface of the rotating seat 2. The cover plate 3 covers the first arc-shaped sliding groove 20 and is fixedly connected to the rotating seat 2 by screws. The cover plate 3 is provided with an arc-shaped through hole 30. The first slider 4 is slidably arranged in the first arc-shaped sliding groove 20. The bottom surface of the first slider 4 extends out of the arc-shaped through hole 30 and slides in the annular sliding groove 11. For example, the cover plate 3 is set as a cover plate with a semi-circular cross section. In use, the rotating seat 2 first rotates, and the first slider 4 slides relative to the first arc-shaped sliding groove 20. After the rotating seat 2 rotates a certain angle, in the rotation direction, the first slider 4 slides relative to the first arc-shaped sliding groove 20. The rear wall of the arc-shaped slide groove 20 abuts against the rear side wall of the first slider 4, stopping the relative sliding between the rotating seat 2 and the first slider 4. The rotating seat 2 continues to rotate, and the rotating seat 2 and the first slider 4 rotate as a whole. The lower extension arm 40 of the first slider 4 slides relative to the annular slide groove 11. When the lower extension arm 40 abuts against the stop block 12, the rotating seat 2 stops rotating. At this time, the stroke angle of the rotating mechanism is the sum of the stroke angle of the first slider 4 relative to the first arc-shaped slide groove 20 and the stroke angle of the first slider 4 relative to the annular slide groove 11, and their sum is greater than 360 degrees. That is, the sum of the stroke angle of the first slider 4 relative to the first arc-shaped slide groove 20 and the stroke angle of the first slider 4 relative to the annular slide groove 11 is not less than 360 degrees. The stroke angle range of the first slider 4 relative to the first arc-shaped slide groove 20 is 23 degrees to 25 degrees, and its stroke angle is 23.59 degrees.

[0024] Further improvements, such as Figure 3As shown, a second arc-shaped groove 31 is provided at the position corresponding to the first arc-shaped groove 20 on the cover plate 3; that is, the second arc-shaped groove 31 is provided on the top surface of the cover plate 3. The positions of the first arc-shaped groove 20 and the second arc-shaped groove 31 are opposite each other. Both the first arc-shaped groove 20 and the second arc-shaped groove 31 are inferior arc-shaped grooves with the same central angle. At the same time, the width of the second arc-shaped groove 31 is greater than the width of the first arc-shaped groove 20. After the cover plate 3 is connected to the rotating seat 2, the opening ends of the first arc-shaped groove 20 and the second arc-shaped groove 31 abut against each other, and the first arc-shaped groove 20 and the second arc-shaped groove 31 form a sliding space; as Figure 2 and Figure 3 As shown, the first slider 4 is slidably disposed within the second arc-shaped groove 31, and an upper extension arm 41 extends from the top surface of the first slider 4, sliding within the first arc-shaped groove 20. An arc-shaped through hole 30 is located at the center of the bottom of the second arc-shaped groove 31 and is coaxially aligned with the second arc-shaped groove 31. The first slider 4 is positioned within the second arc-shaped groove 31, and the upper extension arm 41 extends into the first arc-shaped groove 20 and slides relative to it. Figure 6 As shown, the first slider 4 is an arc-shaped slider. The upper extension arm 41 and the lower extension arm 40 are respectively disposed at the center of the top and bottom surfaces of the first slider 4. In the sliding direction, the distance from the front end of the first slider 4 to the front end of the second arc-shaped groove 31 is equal to the distance from the rear end of the first slider 4 to the rear end of the second arc-shaped groove 31. The distance from the rear end of the upper extension arm 41 to the rear end of the arc-shaped through hole 30 is equal to the distance from the front end of the upper extension arm 41 to the front end of the arc-shaped through hole 30. At the same time, the distance from the front end of the first slider 4 to the front end of the second arc-shaped groove 31 is also equal to the distance from the front end of the upper extension arm 41 to the front end of the arc-shaped through hole 31. At this time, in order to facilitate their sliding, such as Figure 2 and Figure 3 As shown, the upper extension arm 41 and / or the lower extension arm 40 are provided with limiting sliders 5 for limiting sliding. That is, the upper extension arm 41 is provided with a limiting slider 5 that slides in accordance with the first arc-shaped slide groove 20, and is called the upper slider; or the lower extension arm 40 is provided with a limiting slider 5 that slides in accordance with the annular slide groove 11, and is called the lower slider; or limiting sliders 5 are provided on both the upper extension arm 41 and the lower extension arm 40. Figure 6 As shown, the lower extension arm 40 is configured into two parts with different outer diameters. The outer diameter of the part adjacent to the first slider 4 is larger, and the outer diameter of the part farther away from the first slider 4 is smaller. The limiting slider 5 is installed in the part with the smaller outer diameter, which facilitates the installation of the limiting slider 5 and also maintains the stability of the structure after installation. When the upper slider abuts against the groove wall at one end of the first arc-shaped slide groove 20, the sliding of the first slider 4 is limited. When the lower slider abuts against the stop block 12 in the annular slide groove 11, the rotation of the rotating seat 2 is limited. A bearing is selected to act as the limiting slider 5 to facilitate its sliding. The bearing is fixedly sleeved on the upper extension arm 41 or the lower extension arm 40.

[0025] Further improvements, such as Figures 2 to 5 As shown, the top surface of the fixed seat protrusion 10 is provided with a fixed seat through hole 13 that penetrates the fixed seat protrusion 10 and the upper and lower surfaces of the fixed seat 1. The annular groove 11 is arranged circumferentially along the fixed seat through hole 13. The rotating seat 2 is provided with a rotating shaft 21 that passes through the fixed seat through hole 13. The rotating seat 2 is provided with a rotating seat through hole 22 that penetrates the rotating seat 2 and the rotating shaft 21. The rotating seat through hole 22 and the fixed seat through hole 13 are coaxial. The rotating shaft 21 is matched and rotatably arranged in the fixed seat through hole 13, which ensures the stability of the rotation of the rotating seat 2. The rotating seat through hole 22 can be used to install the components that need to be installed on the rotating seat 2, such as the rigid insertion tube of the endoscope.

[0026] Further improvements, such as Figure 2 and Figure 3 As shown, a sealing ring 6 is provided between the fixed seat protrusion 10 and the rotating seat 2. The sealing ring 6 is provided to prevent water from entering. When the rotating seat 2 is sleeved on the fixed seat protrusion 10, the sealing ring 6 is set on the outer side wall of the rotating seat protrusion 10. The structure is to provide a side wall groove on the outer side wall of the rotating seat protrusion 10, and then install the sealing ring 6 in the side wall groove.

[0027] Further improvements, such as Figures 3 to 5 As shown, the outer surface of the rotating seat 2 is provided with anti-slip protrusions 23, which makes it easy to hold the rotating seat 2 and rotate it.

[0028] An endoscope, such as Figure 1 and Figure 2 As shown, the device includes a rotation mechanism of more than 360 degrees as described in any of the preceding items, a rigid insertion tube 7, a probe 8 for lateral detection disposed at the head of the rigid insertion tube 7, and a control handle 9. The fixed base 1 is connected to the control handle 9. The tail end of the rigid insertion tube 7 passes through the rotating base 2, the fixed base protrusion 10, and the fixed base 1 in sequence. The probe 8 is electrically connected to the control handle 9 by a wire passing through the rigid insertion tube 7. The rigid insertion tube 7 is selected from the insertion tubes of existing rigid industrial endoscopes. The control handle 9 can be the control handle of any existing industrial endoscope. The probe 8 is a probe for lateral viewing. Both the probe 8 and the control handle 9 are existing technologies, and their structures will not be described in detail here. When a fixed base through hole 13 is provided on the fixed base 1 and a rotating base through hole 22 is provided on the rotating base 2, the rigid insertion tube 7 is matched and installed in the rotating base through hole 22. The tail end passes through the fixed base 1 and extends into the control handle 9. The wire connecting the probe 8 passes out from the rigid insertion tube 7 and is electrically connected to the control handle 9.

[0029] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A rotating mechanism with a rotation angle greater than 360 degrees, characterized in that, The device includes a fixed base, a fixed base protrusion extending from the center of the top surface of the fixed base, and a rotating seat rotatably mounted on the fixed base protrusion opposite to the top surface of the fixed base protrusion; an annular groove is provided on the top surface of the fixed base protrusion, and a stop block is provided in the annular groove; a first arc-shaped groove and a cover plate covering the first arc-shaped groove are provided on the surface of the rotating seat corresponding to the top surface of the fixed base protrusion, and an arc-shaped through hole is provided on the cover plate; a first slider is slidably mounted in the first arc-shaped groove, and a lower extension arm extends from the bottom surface of the first slider, passing through the arc-shaped through hole and sliding in the annular groove.

2. The rotating mechanism with a rotation angle greater than 360 degrees according to claim 1, characterized in that, The cover plate is provided with a second arc-shaped groove at a position corresponding to the first arc-shaped groove; the first slider is slidably disposed in the second arc-shaped groove and an upper extension arm extends from the top surface of the first slider to slide in the first arc-shaped groove; the arc-shaped through hole is disposed at the center of the bottom of the second arc-shaped groove and is coaxially disposed with the second arc-shaped groove.

3. The rotating mechanism with a rotation angle greater than 360 degrees according to claim 2, characterized in that, The first slider is an arc-shaped slider, and the upper extension arm and the lower extension arm are respectively disposed at the center of the top surface and the bottom surface of the first slider.

4. The rotating mechanism with a rotation angle greater than 360 degrees according to claim 2, characterized in that, The upper extension arm and / or lower extension arm are provided with limiting sliders for limiting sliding.

5. The rotating mechanism with a rotation angle greater than 360 degrees according to claim 1, characterized in that, The sum of the travel angle of the first slider relative to the first arc-shaped groove and the travel angle of the first slider relative to the annular groove is not less than 360 degrees.

6. The rotating mechanism with a rotation angle greater than 360 degrees according to claim 5, characterized in that, The first slider slides relative to the first arc-shaped groove at an angle ranging from 23 degrees to 25 degrees.

7. The rotating mechanism with a rotation angle greater than 360 degrees according to claim 1, characterized in that, The top surface of the fixed seat protrusion is provided with a fixed seat through hole that penetrates the fixed seat protrusion and the upper and lower surfaces of the fixed seat. The annular groove is provided circumferentially along the fixed seat through hole. The rotating seat is provided with a rotating shaft that passes through the fixed seat through hole. The rotating seat is provided with a rotating seat through hole that penetrates the rotating seat and the rotating shaft.

8. The rotating mechanism with a rotation angle greater than 360 degrees according to claim 1, characterized in that, A sealing ring is provided between the fixed seat protrusion and the rotating seat.

9. The rotating mechanism with a rotation angle greater than 360 degrees according to claim 1, characterized in that, The outer surface of the rotating seat is provided with anti-slip protrusions.

10. An endoscope, characterized in that, The device includes a rotating mechanism with a rotation angle greater than 360 degrees as described in any one of claims 1 to 9, a rigid insertion tube, a probe for lateral detection disposed at the head of the rigid insertion tube, and a control handle. The fixed base is connected to the control handle. The tail end of the rigid insertion tube passes through the rotating base, the fixed base protrusion, and the fixed base in sequence. The probe is electrically connected to the control handle via a wire passing through the rigid insertion tube.

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