CN220045843U

CN220045843U - Optical signal transmission device and endoscope

Info

Publication number: CN220045843U
Application number: CN202222754342.5U
Authority: CN
Inventors: 王贺; 邱建军
Original assignee: Sonoscape Medical Corp
Current assignee: Sonoscape Medical Corp
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-11-21
Anticipated expiration: 2032-10-19

Abstract

Compared with the prior art, the utility model relates to the technical field of medical equipment, and provides an optical signal transmission device, wherein a rotor of a driving part is connected with a rotor of an optoelectronic slip ring through a coupler, and rotation transmission is realized through the coupler, so that the rotor of the driving part and the rotor of the optoelectronic slip ring keep synchronous rotation; the rotor outgoing line of the photoelectric slip ring passes through the rotor of the coupler and the driving part; the coupler comprises at least two groups of connecting parts which can move relatively along the axial direction and can transmit circumferential rotation, the connecting parts can move along the axial direction, and the axial length of the coupler is adjusted during assembly; the rotor of the driving part and the rotor of the photoelectric slip ring are respectively connected with different connecting parts, and when the photoelectric slip ring is assembled, the connecting parts of the coupler are adjusted, so that the overall length of the coupler is changed, the length of the coupler is matched with the length of a rotor outgoing line of the photoelectric slip ring, the rotor outgoing line of the photoelectric slip ring comprises an optical fiber, and the optical fiber can be prevented from being excessively bent and deformed. The endoscope according to the present utility model can achieve the same technical effects.

Description

Optical signal transmission device and endoscope

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an optical signal transmission device. Furthermore, the utility model relates to an endoscope.

Background

Endoscopes are detection instruments that integrate traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software, etc., with components such as image sensors, optical lenses, light source illumination, mechanical devices, etc. The endoscope is a noninvasive imaging device, can enter the stomach through the oral cavity or enter the body through other natural pore canals, can accurately observe the characteristics of the surface or the interior of biological tissues by using the endoscope, can see the lesions which cannot be displayed by X rays, and is very important for doctors to diagnose the lesions. For example, an endoscope may be used to view ulcers or tumors in the stomach, thereby creating an optimal treatment regimen.

The endoscope transmits an optical signal by an optical fiber and transmits an electrical signal by a wire. The endoscope comprises a probe part and a driving part, a rotating assembly is respectively arranged in the probe part and the driving part of the endoscope for realizing multi-angle observation, an optical fiber and a wire penetrate through the rotating assembly and are connected with the rotating assembly of the photoelectric slip ring, the photoelectric slip ring can transmit electric energy, electric signals, optical energy and optical signals between the parts which rotate relatively, and normal transmission of energy or signals in rotating connection is ensured.

The traditional wiring mode is that after the optical fiber and the lead wire are led out of the rotating component of the driving part, the optical fiber and the lead wire are connected with the rotating component of the photoelectric slip ring, and then the photoelectric slip ring is fixedly installed. This type of assembly can cause bending of the optical fibers and conductors, affecting the signal transmission of the optical fibers.

It is a technical problem that needs to be solved at present for a person skilled in the art how to avoid excessive bending deformation during optical fiber assembly.

Disclosure of Invention

The utility model provides an optical signal transmission device which can prevent the transmission of optical signals from being influenced by the large-amplitude bending of optical fibers and improve the transmission quality of the optical signals.

The optical signal transmission device comprises a driving part, an optoelectronic slip ring and a coupler, wherein a rotor of the driving part is connected with a rotor of the optoelectronic slip ring through the coupler, and a rotor outgoing line of the optoelectronic slip ring passes through the rotor of the driving part and the coupler;

the coupler comprises at least two groups of connecting parts which can move relatively along the axial direction and can transmit circumferential rotation, and the connecting parts are used for adjusting the axial length of the coupler during assembly; the rotor of the driving part and the rotor of the photoelectric slip ring are respectively connected with different connecting parts.

Optionally, the coupling comprises two groups of connecting parts, namely an outer sleeve and an inner sleeve, which are nested with each other, can move along the axial direction and can transmit circumferential rotation; the outer sleeve and the inner sleeve are respectively connected to one of the rotor of the driving part and the rotor of the photoelectric slip ring.

Optionally, one of the outer wall of the inner sleeve and the inner wall of the outer sleeve is provided with a protruding transmission key, the other one is provided with a transmission groove nested with the transmission key, the transmission key can slide in the transmission groove along the axial direction of the coupler, and the transmission key and the transmission groove are matched to transmit circumferential rotation.

Optionally, the inner wall of the outer sleeve is provided with a circumferential positioning surface for realizing circumferential transmission in cooperation with the rotor of the photoelectric slip ring, and the plane of the circumferential positioning surface is parallel to the axial direction of the outer sleeve;

the inner wall of the outer sleeve is provided with an axial step surface matched with the rotor of the photoelectric slip ring for axial contact positioning, and the axial step surface is perpendicular to the axial direction of the outer sleeve.

Optionally, each connecting portion includes at least two detachably connected combination pieces, each combination piece forms a part of a circumferential direction of the connecting portion, and each combination piece is fixed around to form the connecting portion.

Optionally, an outer cylinder connecting table for installing a fixing bolt is convexly arranged on the outer surface of the outer sleeve, and the fixing bolt fixedly connects the two combined sheets of the outer sleeve through the outer cylinder connecting table;

the outer surface of the inner sleeve is provided with an inner sleeve connecting table in a protruding mode, and the fixing bolts are used for fixedly connecting the two combined sheets of the inner sleeve through the inner sleeve connecting table.

Optionally, the device further comprises a slip ring fixing assembly, wherein the slip ring fixing assembly comprises a driving connecting frame and a slip ring connecting frame;

the driving connecting frame is fixedly arranged on the stator of the driving part, and the slip ring connecting frame is fixedly arranged on the stator of the photoelectric slip ring; the driving connecting frame and the slip ring connecting frame are at least partially overlapped along the axial direction of the photoelectric slip ring, the axial positions of the driving connecting frame and the slip ring connecting frame are adjustable, and the connection positioning is realized through the overlapped parts.

Optionally, the driving connection frame comprises a driving flange plate and a driving positioning plate, and the slip ring connection frame comprises a slip ring flange plate and a slip ring positioning plate;

the driving flange plate is fixed on the stator of the driving part, and the slip ring flange plate is fixed on the stator of the photoelectric slip ring;

one of the driving positioning plate and the slip ring positioning plate is provided with an adjusting waist hole along the axial direction, the other one is provided with a threaded hole, and a positioning bolt penetrates through the adjusting waist hole and is in threaded connection with the threaded hole, so that the driving positioning plate and the slip ring positioning plate realize positioning with an adjustable shaft.

Optionally, the outer cylinder connecting table is axially positioned in cooperation with the slip ring flange;

the inner cylinder connecting table is axially positioned in cooperation with the driving flange plate.

The utility model also provides an endoscope comprising the optical signal transmission device.

Optionally, the stator of the driving part is connected to the outer shell of the mirror body, and the rotor of the driving part is connected to the inner core of the mirror body; the rotor outgoing line of the photoelectric slip ring is connected with the inner core of the endoscope body, and the stator outgoing line of the photoelectric slip ring is connected with the signal processing module of the endoscope.

Compared with the prior art, the utility model provides the optical signal transmission device, wherein the rotor of the driving part is connected with the rotor of the photoelectric slip ring through the coupler, and the rotation transmission is realized through the coupler, so that the rotor of the driving part and the rotor of the photoelectric slip ring keep synchronous rotation; the rotor outgoing line of the photoelectric slip ring passes through the rotor of the coupler and the driving part; the coupler comprises at least two groups of connecting parts which can move relatively along the axial direction and can transmit circumferential rotation, the connecting parts can move along the axial direction, and the axial length of the coupler is adjusted during assembly; the rotor of the driving part and the rotor of the photoelectric slip ring are respectively connected with different connecting parts, and when the photoelectric slip ring is assembled, the connecting parts of the coupler are adjusted, so that the overall length of the coupler is changed, the length of the coupler is matched with the length of a rotor outgoing line of the photoelectric slip ring, the rotor outgoing line of the photoelectric slip ring comprises an optical fiber, and the optical fiber can be prevented from being excessively bent and deformed.

The endoscope according to the present utility model can achieve the same technical effects.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an isometric view of an optical signal transmission device according to the present utility model;

FIG. 2 is an exploded view of the optical signal transmission device of the present utility model;

fig. 3 is an isometric view of a partial construction of an endoscope.

The drawings include:

a driving unit 1;

an optoelectronic slip ring 2;

the coupling 3, the outer sleeve 31, the transmission groove 311, the outer cylinder connecting post 312, the outer cylinder connecting table 313, the circumferential positioning surface 314, the axial step surface 315, the inner sleeve 32, the transmission key 321, the inner cylinder connecting post 322, the inner cylinder connecting table 323 and the fixing bolt 33;

slip ring fixed subassembly 4, drive link 41, drive flange 411, drive locating plate 412, slip ring link 42, slip ring flange 421, slip ring locating plate 422, locating bolt 43.

Detailed Description

The core of the utility model is to provide an optical signal transmission device, which can prevent the optical fiber from being bent to a large extent to influence the transmission of optical signals and improve the transmission quality of the optical signals.

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the following describes the optical signal transmission device and the endoscope of the present utility model in detail with reference to the accompanying drawings and the specific embodiments.

With reference to fig. 1 and 2, the utility model provides an optical signal transmission device, which comprises a driving part 1, an optoelectronic slip ring 2, a coupler 3 and other structures, wherein a rotor of the optoelectronic slip ring 2 is connected with a rotor outgoing line, the rotor outgoing line comprises an optical fiber, the optical fiber is used for transmitting an optical signal, and other wires can be arranged side by side with the optical fiber for realizing transmission of an electronic signal; the rotor of the driving part 1 is connected with the rotor of the photoelectric slip ring 2 through the coupling 3, namely, the rotor of the driving part 1 and the rotor of the photoelectric slip ring 2 are respectively connected at two ends of the coupling 3, circumferential transmission is realized between the rotor of the driving part 1 and the rotor of the photoelectric slip ring 2 through the coupling 3, and the rotor of the driving part 1 and the rotor of the photoelectric slip ring 2 keep synchronous rotation.

Both the drive part 1 and the opto-electronic slip ring 2 comprise a stator and a rotor, respectively, the stator being stationary in use and the rotor being rotatable relative to the stator.

The rotor outgoing line of the photoelectric slip ring 2 passes through the coupler 3 and the rotor of the driving part 1, a channel for the rotor outgoing line to pass through is arranged in the coupler 3, and the rotor outgoing line of the photoelectric slip ring 2 can respectively pass through the coupler 3 of the rotor of the driving part 1; the rotor outgoing line is used for transmitting signals, including optical signals and electrical signals, and synchronously rotates around the axis along with the rotor of the photoelectric slip ring 2, the coupler 3 and the rotor of the driving part 1.

The coupler 3 is sleeved outside the rotor outgoing line of the photoelectric slip ring 2, and the coupler 3 plays a role in transmitting rotation; the coupling 3 comprises at least two groups of connecting parts capable of relatively moving along the axial direction, and each group of connecting parts can transmit circumferential rotation, namely each connecting part can relatively move along the axial direction of the coupling 3, but cannot relatively rotate along the circumferential direction. The axial position can be adjusted between each connecting portion for adjust the axial length of shaft coupling 3 when assembling, according to the position difference that connecting portion was located, can make the whole of shaft coupling 3 have different length, the overlap portion between each connecting portion is more, the whole length of shaft coupling 3 is shorter. The rotor of the driving part 1 and the rotor of the photoelectric slip ring 2 are respectively connected to different connecting parts; when two connecting parts exist, the rotor of the driving part 1 and the rotor of the photoelectric slip ring 2 are respectively connected to the two different connecting parts; when there are more than two connecting portions, the rotor of the driving portion 1 and the rotor of the photoelectric slip ring 2 are connected to the connecting portions at both ends, respectively. In general, the rotor of the driving unit 1 and the rotor of the photoelectric slip ring 2 are fixedly connected to the coupling 3, but a connection form in which the axial length of the rotor of the driving unit 1 and the rotor of the photoelectric slip ring 2 can be adjusted to the coupling 3 is not excluded.

The coupler 3 comprises at least two different connecting parts for realizing axial length adjustment, and when the coupler is assembled, a rotor outgoing line of the photoelectric slip ring 2 passes through the rotor of the driving part 1 and the coupler 3, the connecting parts of the coupler 3 are respectively arranged on the rotor of the driving part 1 and the rotor of the photoelectric slip ring 2, and the length of the coupler 3 is adjusted to be matched with the rotor outgoing line length of the photoelectric slip ring 2, so that the rotor outgoing line of the photoelectric slip ring 2 is ensured to be in an extended state, and particularly, the excessive bending deformation is avoided when an optical fiber is assembled, and the influence on the transmission of optical fiber signals is avoided.

In some embodiments, the coupling 3 of the present utility model comprises two sets of connecting portions, an outer sleeve 31 and an inner sleeve 32, respectively, the outer sleeve 31 and the inner sleeve 32 being one connecting portion, the coupling 3 being formed by the outer sleeve 31 and the inner sleeve 32, the outer sleeve 31 and the inner sleeve 32 being nested with each other, and the outer sleeve 31 and the inner sleeve 32 being axially movable, the outer sleeve 31 and the inner sleeve 32 being capable of transmitting circumferential rotation. The outer sleeve 31 and the inner sleeve 32 are respectively connected to one of the rotor of the driving unit 1 and the rotor of the photoelectric slip ring 2, and the outer sleeve 31 may be connected to the rotor of the driving unit 1, the inner sleeve 32 may be connected to the rotor of the photoelectric slip ring 2, or the inner sleeve 32 may be connected to the rotor of the driving unit 1, and the outer sleeve 31 may be connected to the rotor of the photoelectric slip ring 2. At least a portion of the inner diameter of the outer sleeve 31 is slightly larger than at least a portion of the outer diameter of the inner sleeve 32, and one end of the inner sleeve 32 is capable of being nested and inserted from one end of the outer sleeve 31.

Specifically, one of the outer wall of the inner sleeve 32 and the inner wall of the outer sleeve 31 is provided with a protruding transmission key 321, the other one is provided with a transmission groove 311 which is clamped with the transmission key 321, the transmission groove 311 is a recessed groove, the transmission key 321 and the transmission groove 311 are mutually nested and inserted and matched, the transmission key 321 can slide in the transmission groove 311 along the axial direction of the coupler 3, and the transmission key 321 and the transmission groove 311 are matched to transmit circumferential rotation, so that circumferential transmission is realized, and the inner sleeve 32 and the outer sleeve 31 keep synchronous rotation.

Referring to fig. 2, in the embodiment shown therein, a transmission key 321 is disposed on an outer wall of the inner sleeve 32, a transmission groove 311 is disposed on an inner wall of the outer sleeve 31, and the transmission key 321 and the transmission groove 311 are both in an elongated structure disposed along an axial direction, so as to realize a matched rotation transmission when the transmission key and the transmission groove are axially inserted.

The inner wall of the outer sleeve 31 is parallel to a circumferential positioning surface 314 which is axially arranged for being matched with a rotor of the photoelectric slip ring 2 to realize circumferential transmission, and the plane of the circumferential positioning surface 314 is parallel to the axial direction of the outer sleeve 31; referring to fig. 2, the circumferential positioning surface 314 is a plane, which corresponds to supplementing a portion of the inner wall of the outer sleeve 31; correspondingly, a plane is arranged at a position corresponding to the outer surface of the rotor of the photoelectric slip ring 2, which is equivalent to cutting a part of the side wall of the rotor of the photoelectric slip ring 2; when the outer sleeve 31 and the rotor of the photoelectric slip ring 2 are axially inserted, a plane arranged on the outer surface of the rotor of the photoelectric slip ring 2 is in matched contact with a circumferential positioning surface 314 arranged on the inner wall of the outer sleeve 31, so that circumferential torque transmission is realized, and rotation is realized. Of course, the present utility model is not limited to the arrangement of the circumferential positioning surface 314 and the cutting surface of the rotor of the opto-electronic slip ring 2 as a plane, but other arrangements may be adopted, such as saw teeth, waves, etc.

The inner wall of the outer sleeve 31 is radially provided with an axial step surface 315 in a protruding manner, which is matched with the rotor of the photoelectric slip ring 2 for axial contact positioning, and the axial step surface 315 is perpendicular to the axial direction of the outer sleeve 31. The axial step surface 315 is equivalent to a section of annular boss protruding from the inner wall of the outer sleeve 31, the maximum axial dimension of the rotor of the photoelectric slip ring 2 is limited by the axial step surface 315, the assembly between the outer sleeve 31 and the rotor of the photoelectric slip ring 2 realizes axial positioning, and when the rotor end of the photoelectric slip ring 2 is propped against the axial step surface 315, the axial movement cannot be continued, and the axial dimension of the rotor extending into the outer sleeve 31 reaches the maximum.

On the basis of any one of the above technical schemes and the mutual combination thereof, and referring to fig. 2, each connecting portion of the present utility model includes at least two combined pieces detachably connected, each combined piece forms a part of the circumference of the connecting portion, and the cross section of each combined piece is an arc; each combination piece surrounds and fixes and forms connecting portion, and the cross section of connecting portion is a complete annular, and each combination piece is served as a part arc respectively. Each connecting part is formed by splicing at least two combined sheets, and a plurality of combined sheets can be spliced to form the connecting part during installation, so that the assembly and the disassembly are convenient.

In general, the sizes of the combined sheets are equal, namely, the combined sheets are distributed in a central symmetry manner; the present utility model does not exclude the case of different sizes of the combination sheet.

Referring to fig. 2, an outer surface of the outer sleeve 31 is provided with an outer cylinder connecting stand 313 for mounting the fixing bolt 33 in a protruding manner, and an outer surface of the inner sleeve 32 is provided with an inner cylinder connecting stand 323 for mounting the fixing bolt 33 in a protruding manner. In the structure shown in fig. 2, the outer cylinder connecting base 313 and the inner cylinder connecting base 323 are boss structures protruding in the circumferential direction in an annular shape, the outer cylinder connecting base 313 and the inner cylinder connecting base 323 are also split structures, the outer cylinder connecting base 313 is provided for each of the combined pieces constituting the outer sleeve 31, and the inner cylinder connecting base 323 is provided for each of the combined pieces constituting the inner sleeve 32. The outer tube connecting base 313 and the inner tube connecting base 323 are located at positions having larger wall thickness, and the outer tube connecting base 313 and the inner tube connecting base 323 may be provided with connecting holes, the two combination pieces of the outer sleeve 31 may be fixedly connected to each other by the fixing bolts 33 through the outer tube connecting base 313, and the two combination pieces of the inner sleeve 32 may be fixedly connected to each other by the fixing bolts 33 through the inner tube connecting base 323.

On the basis of any one of the above technical solutions and the combination of the above technical solutions, the present utility model further includes a slip ring fixing assembly 4, and in combination with fig. 1 and 2, the slip ring fixing assembly 4 includes a driving connection frame 41 and a slip ring connection frame 42.

The driving connection frame 41 is fixedly installed on the stator of the driving part 1, the slip ring connection frame 42 is fixedly installed on the stator of the photoelectric slip ring 2, namely, the driving connection frame 41 is connected to the driving part 1, the slip ring connection frame 42 is connected to the photoelectric slip ring 2, and when the photoelectric slip ring 2 and the driving part 1 relatively move along the axial direction, the driving connection frame 41 and the slip ring connection frame 42 are driven to relatively move along the axial direction.

The driving connecting frame 41 and the slip ring connecting frame 42 are at least partially overlapped, the axial positions of the driving connecting frame 41 and the slip ring connecting frame 42 are adjustable, and axial clamping and positioning are realized through the overlapped parts; when the outer sleeve 31 and the inner sleeve 32 of the coupler 3 are axially moved and adjusted, the driving connecting frame 41 and the slip ring connecting frame 42 are synchronously axially moved and adjusted, and after the positions of the outer sleeve 31 and the inner sleeve 32 are determined, the driving connecting frame 41 and the slip ring connecting frame 42 are relatively fixed, so that the positions of the outer sleeve 31 and the inner sleeve 32 are relatively fixed, the axial length of the whole coupler 3 is fixed, and the axial length of the coupler 3 is prevented from random floating.

It should be noted that the present utility model uses the driving connection frame 41 and the slip ring connection frame 42 to fix the length of the coupling 3, which is just a preferred embodiment, and other positioning manners may be adopted, for example, a tightening screw is installed on the side wall of the outer sleeve 31, and the end of the tightening screw is abutted against the side wall of the inner sleeve 32 to fix the relative positions of the outer sleeve 31 and the inner sleeve 32.

Referring to fig. 2, the driving connection frame 41 includes a driving flange 411 and a driving positioning plate 412, and an extending direction of the driving flange 411 and an extending direction of the driving positioning plate 412 are perpendicular to each other; the slip ring connecting frame 42 includes a slip ring flange 421 and a slip ring positioning plate 422, and an extending direction of the slip ring flange 421 and an extending direction of the slip ring positioning plate 422 are perpendicular to each other. The length directions of the driving positioning plate 412 and the slip ring positioning plate 422 extend along the axial direction, and an overlapping part exists between the driving positioning plate 412 and the slip ring positioning plate 422; the plate surfaces of the driving flange 411 and the slip ring flange 421 are oriented perpendicular to the axial direction.

The driving flange 411 is fixed to the stator of the driving part 1, the slip ring flange 421 is fixed to the stator of the photoelectric slip ring 2, the driving flange 411 and the slip ring flange 421 are fixedly assembled by bolts arranged circumferentially, and the driving connection frame 41 and the slip ring connection frame 42 are fixedly connected. One of the driving positioning plate 412 and the slip ring positioning plate 422 is provided with an adjusting waist hole along the axial direction, the other is provided with a threaded hole, and the positioning bolt 43 penetrates through the adjusting waist hole and is in threaded connection with the threaded hole, so that the driving positioning plate 412 and the slip ring positioning plate 422 realize the shaft-adjustable positioning. Referring to fig. 1 and 2, an adjustment waist hole is vertically and penetratingly formed in the plate surface of the drive connection frame 41, and the length extension direction of the adjustment waist hole is along the axial direction; a threaded hole is vertically and penetratingly formed in the plate surface of the slip ring connecting frame 42, an internal thread is arranged in the threaded hole, and a positioning bolt 43 penetrates through the adjusting waist hole to form threaded fit connection with the threaded hole; when the drive connection frame 41 and the slip ring connection frame 42 are required to be fixed relatively, the positioning bolts 43 are screwed, and the drive positioning plate 412 and the slip ring positioning plate 422 are pressed against each other to achieve fixed positioning. Of course, the setting positions of the waist hole and the threaded hole can be changed, and the same technical effect can be achieved. The connection fixation by two positioning bolts 43 is shown in fig. 2 for a more stable positioning action.

The outer cylinder connecting table 313 can be axially positioned in cooperation with the slip ring flange 421; the inner barrel connecting stage 323 can be axially positioned in cooperation with the drive flange 411. Referring to fig. 2, an outer cylinder connection post 312 is provided on the right side of the outer cylinder connection post 313, the outer diameter of the outer cylinder connection post 313 is larger than that of the outer cylinder connection post 312, and a step having a abrupt size is formed between the outer cylinder connection post 313 and the outer cylinder connection post 312, and can be axially positioned in cooperation with a slip ring flange 421. An inner cylinder connecting column 322 is arranged on the left side of the inner cylinder connecting table 323, the outer diameter of the inner cylinder connecting table 323 is larger than that of the inner cylinder connecting column 322, a step with abrupt size is formed between the inner cylinder connecting table 32 and the inner cylinder connecting column 322, and the step can be axially positioned in cooperation with the driving flange 411. After assembly, the outer cylinder connection post 312 and the slip ring flange 421 have an overlap region in the axial direction, and the inner cylinder connection post 322 and the drive flange 411 have an overlap region in the axial direction.

The utility model also provides an endoscope, which comprises the optical signal transmission device, wherein the probe of the endoscope can realize circumferential rotation to detect the azimuth of the direction. The endoscope can achieve the technical effects described above.

The endoscope comprises a mirror body, one end of the mirror body can partially extend into the body during detection, a stator of the driving part 1 is connected to a shell of the mirror body, a rotor of the driving part 1 is connected to an inner core of the mirror body, and the inner core of the mirror body is driven to synchronously rotate during rotation of the rotor of the driving part 1. The photoelectric slip ring 2 is close to one end of the handle, a stator outgoing line of the photoelectric slip ring 2 is connected to a signal processing module of the endoscope, and a signal transmitted by an inner core of the endoscope body is transmitted to the signal processing module of the endoscope through a rotor outgoing line of the photoelectric slip ring 2, so that an endoscopic image is obtained.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The optical signal transmission device is characterized by comprising a driving part (1), an optoelectronic slip ring (2) and a coupler (3), wherein a rotor of the driving part (1) is connected with a rotor of the optoelectronic slip ring (2) through the coupler (3), and a rotor outgoing line of the optoelectronic slip ring (2) passes through the rotor of the driving part (1) and the coupler (3);

the coupler (3) comprises at least two groups of connecting parts which can move relatively along the axial direction and can transmit circumferential rotation, and the connecting parts are used for adjusting the axial length of the coupler (3) during assembly; the rotor of the driving part (1) and the rotor of the photoelectric slip ring (2) are respectively connected with different connecting parts.

2. Optical signal transmission device according to claim 1, characterized in that the coupling (3) comprises two sets of connection parts, respectively an outer sleeve (31) and an inner sleeve (32), the outer sleeve (31) and the inner sleeve (32) being mutually nested, axially movable and capable of transmitting a circumferential rotation; the outer sleeve (31) and the inner sleeve (32) are respectively connected to one of the rotor of the driving part (1) and the rotor of the photoelectric slip ring (2).

3. An optical signal transmission device according to claim 2, characterized in that one of the outer wall of the inner sleeve (32) and the inner wall of the outer sleeve (31) is provided with a protruding transmission key (321), the other one is provided with a transmission groove (311) nested with the transmission key (321), the transmission key (321) can slide in the transmission groove (311) along the axial direction of the coupling (3), and the transmission key (321) and the transmission groove (311) cooperate to transmit circumferential rotation.

4. Optical signal transmission device according to claim 2, characterized in that the inner wall of the outer sleeve (31) is provided with a circumferential positioning surface (314) for realizing circumferential transmission in cooperation with the rotor of the opto-electronic slip ring (2), the plane of the circumferential positioning surface (314) being parallel to the axial direction of the outer sleeve (31);

an axial step surface (315) matched with the rotor of the photoelectric slip ring (2) for axial contact positioning is arranged on the inner wall of the outer sleeve (31), and the axial step surface (315) is perpendicular to the axial direction of the outer sleeve (31).

5. An optical signal transmission device according to any one of claims 2 to 4 wherein each of the connection portions comprises at least two detachably connected combination pieces, each of the combination pieces forming a part of the circumference of the connection portion, each of the combination pieces being secured around to form the connection portion.

6. The optical signal transmission device according to claim 5, wherein an outer cylinder connecting table (313) for mounting a fixing bolt (33) is provided to protrude from an outer surface of the outer sleeve (31), and the fixing bolt (33) fixedly connects the two combination pieces of the outer sleeve (31) through the outer cylinder connecting table (313);

an inner cylinder connecting table (323) for installing a fixing bolt (33) is arranged on the outer surface of the inner sleeve (32) in a protruding mode, and the fixing bolt (33) fixedly connects the two combined sheets of the inner sleeve (32) through the inner cylinder connecting table (323).

7. An optical signal transmission device according to any one of claims 2 to 4, further comprising a slip ring fixing assembly (4), the slip ring fixing assembly (4) comprising a drive connection frame (41) and a slip ring connection frame (42);

the driving connecting frame (41) is fixedly arranged on the stator of the driving part (1), and the slip ring connecting frame (42) is fixedly arranged on the stator of the photoelectric slip ring (2); the driving connecting frame (41) and the slip ring connecting frame (42) are at least partially overlapped along the axial direction of the photoelectric slip ring (2), the axial positions of the driving connecting frame (41) and the slip ring connecting frame (42) are adjustable, and connection positioning is realized through the overlapped parts.

8. The optical signal transmission device according to claim 7, wherein the drive connection frame (41) comprises a drive flange (411) and a drive positioning plate (412), and the slip ring connection frame (42) comprises a slip ring flange (421) and a slip ring positioning plate (422);

the driving flange (411) is fixed to the stator of the driving part (1), and the slip ring flange (421) is fixed to the stator of the photoelectric slip ring (2);

one of the driving positioning plate (412) and the slip ring positioning plate (422) is provided with an adjusting waist hole along the axial direction, the other one is provided with a threaded hole, and a positioning bolt (43) penetrates through the adjusting waist hole and is in threaded connection with the threaded hole, so that the driving positioning plate (412) and the slip ring positioning plate (422) realize shaft-adjustable positioning.

9. The optical signal transmission device according to claim 8, wherein an outer barrel connection (313) is axially positioned in cooperation with the slip ring flange (421);

the inner cylinder connecting table (323) is matched with the driving flange plate (411) to be axially positioned.

10. An endoscope comprising the optical signal transmission device according to any one of claims 1 to 9;

the stator of the driving part (1) is connected with the outer shell of the mirror body, and the rotor of the driving part (1) is connected with the inner core of the mirror body; the rotor outgoing line of the photoelectric sliding ring (2) is connected with the inner core of the endoscope body, and the stator outgoing line of the photoelectric sliding ring (2) is connected with the signal processing module of the endoscope.