Optical fiber plug fixing device and endoscope

Abstract

The utility model relates to the technical field of endoscopes, and discloses an optical fiber plug fixing device and an endoscope. The optical fiber plug fixing device is used for fixing an optical fiber plug and comprises a main body which is provided with an insertion hole for insertion of the optical fiber plug; the radial matching holes are formed along the periphery of the insertion hole at intervals and extend in the radial direction of the insertion hole, and circumferential grooves are formed in the positions, matched with the radial matching holes, of the optical fiber plug; and a plurality of locking assemblies, each radial matching hole is internally provided with one locking assembly, and the locking assemblies can extend into the circumferential groove and axially lock the optical fiber plug. According to the optical fiber plug fixing device, the locking assembly can extend into the circumferential groove in the optical fiber plug and exert abutting pressure on the groove bottom of the circumferential groove, so that the optical fiber plug is stably restrained in the insertion hole, and the optical fiber plug is prevented from loosening after being connected with the main body; and the illumination uniformity and stability of the light source on the endoscope are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to an optical fiber plug fixing device and an endoscope. Background Art

[0002] The optical fiber is used to connect between the cold light source of the medical endoscope and the optical endoscope, and transmit the light from the cold light source to the optical endoscope, thereby providing lighting for the camera end of the optical endoscope. Therefore, it is particularly important to ensure the reliable connection between the optical fiber plug fixture and the optical fiber plug.

[0003] In the related art, when the optical fiber plug fixture is connected to the optical fiber plug, the optical fiber plug is easily not installed in place, causing the connection between the optical fiber plug and the fixture to loosen or even detach from the optical fiber plug fixture, affecting the light flux transmitted from the light source to the rigid optical endoscope, affecting the uniformity and stability of the light source's illumination of the endoscope, and even affecting the imaging quality due to insufficient light, causing the endoscope to fail to work properly. Utility Model Content

[0004] In view of this, the utility model provides an optical fiber plug fixing device and an endoscope to solve the defect that the optical fiber plug of the existing optical fiber plug fixing device is easily not installed in place when connected to the optical fiber, which affects the uniformity and stability of the illumination of the endoscope by the light source, affects the imaging quality, and even causes the endoscope to fail to work normally.

[0005] In a first aspect, the utility model provides an optical fiber plug fixing device for fixing an optical fiber plug, comprising:

[0006] A main body, wherein an insertion hole is formed on the main body for inserting the optical fiber plug;

[0007] A plurality of radial matching holes are arranged at intervals along the periphery of the insertion hole and extend radially along the insertion hole respectively, and a circumferential groove is arranged at the position where the optical fiber plug matches the radial matching hole;

[0008] A plurality of locking components are provided in each radial matching hole. The locking components can extend into the circumferential groove and implement axial locking on the optical fiber plug.

[0009] Beneficial effects:

[0010] The optical fiber plug fixing device of the embodiment of the utility model mainly forms a plurality of radial matching holes arranged along the radial direction of the insertion hole on the main body, and a locking component is arranged in each radial matching hole. When the optical fiber plug is inserted into the insertion hole on the main body, the plurality of locking components can extend into the circumferential groove on the optical fiber plug and apply a pressing force to the bottom of the circumferential groove so that the optical fiber plug is stably constrained in the insertion hole, thereby preventing the optical fiber plug from loosening after being connected to the main body, affecting the uniformity and stability of the illumination of the endoscope by the light source.

[0011] At the same time, multiple locking components can cooperate with the groove wall of the circumferential groove to limit the optical fiber axially. Therefore, the optical fiber plug fixture of the present application can both reliably limit the optical fiber plug radially and axially, ensure the uniformity and stability of the light source for the endoscope, and ensure that the optical fiber plug is loosened or detached from the optical fiber plug fixture after being plugged into the optical fiber plug fixture, resulting in insufficient light that affects the imaging quality or even the endoscope cannot work properly.

[0012] In an optional embodiment, the locking assembly includes an elastic top pressing member, and the elastic top pressing member includes:

[0013] spring;

[0014] A locking bead abuts against the side of the spring that is closest to the insertion hole.

[0015] Beneficial effects:

[0016] By so arranging, when the operator inserts or removes the optical fiber plug, the locking bead can roll so that the optical fiber plug is pulled out from the main body. Even if the elastic element in the elastic top pressing member fails, the locking bead can also avoid the optical fiber plug from getting stuck by rolling itself.

[0017] In an optional embodiment, a circumferential convex flange is formed at one end of the radial matching hole close to the insertion hole, and the inner diameter of the circumferential convex flange is smaller than the diameter of the locking bead.

[0018] Beneficial effects:

[0019] The circumferential convex edge can prevent the locking bead from falling into the insertion hole under the pressure of the spring. Preferably, the taper of the side of the circumferential convex edge against the locking bead is set to fit the locking bead, which can make the locking bead rotate more smoothly in the radial matching hole, further reducing the risk of the optical fiber plug getting stuck.

[0020] In an optional embodiment, the locking assembly further includes an adjusting assembly, which is installed in the radial matching hole and abuts against the elastic pressing piece to compress or relax the spring.

[0021] Beneficial effects:

[0022] The adjustment component can be used to adjust the pressing force applied by the elastic pressing member to the bottom of the circumferential groove to adjust the optical fiber plug so that the optical fiber receiving surface is aligned with the optical axis center of the light source, thereby improving the effect of the light source. When there are errors in the processing and assembly of parts, resulting in inconsistent support forces of multiple elastic pressing members on the optical fiber plug, the operator can compress or relax the spring through the adjustment component to prevent the optical fiber receiving surface of the optical fiber plug from deviating from the center of the optical axis. When the spring in the elastic pressing member ages after long-term use, the operator can control the adjustment component to compress the spring to ensure that the elastic pressing member can apply sufficient support force to the optical fiber plug, and ensure that the optical fiber plug fixing device can implement reliable circumferential and axial limiting of the optical fiber plug.

[0023] In an optional embodiment, the adjustment component includes:

[0024] A threaded knob, an inner thread is formed on the inner peripheral wall of the radial matching hole, and the threaded knob is threadedly connected with the inner thread;

[0025] The limiting column is connected with the threaded knob. The spring is sleeved on the limiting column and abuts against the threaded knob.

[0026] In an optional embodiment, a plurality of radial fitting holes are arranged at equal central angles.

[0027] Beneficial effects:

[0028] By such an arrangement, it is ensured that the pressures applied by the multiple elastic pressing members to the optical fiber plug can offset each other, thereby preventing the optical fiber receiving surface from deviating from the center of the optical axis.

[0029] In an optional embodiment, the optical fiber plug fixing device further includes a heat sink, which is disposed on one side of the main body and located at one end of the insertion hole, and can dissipate heat for the insertion end of the optical fiber plug.

[0030] Beneficial effects:

[0031] The heat sink can dissipate heat from the end face of the optical fiber plug to prevent the operator from being burned after the optical fiber plug is pulled out.

[0032] In an optional embodiment, a fiber optic plug light-through hole is formed on the heat sink, the fiber optic plug light-through hole is connected to the insertion hole, and the fiber optic plug can enter the fiber optic plug light-through hole through the insertion hole.

[0033] Beneficial effects:

[0034] The optical fiber plug light hole can limit the optical fiber plug to ensure that the receiving surface of the optical fiber is aligned with the center of the optical axis.

[0035] In an optional embodiment, a mounting hole connected to the insertion hole is formed on the main body, the mounting hole is formed on one side of the main body and extends radially along the insertion hole, and the optical fiber plug fixing device further includes:

[0036] A photoelectric sensor is arranged on one side of the main body and is used to transmit a signal into the mounting hole;

[0037] A light shielding sheet is hinged in the mounting hole, and has a light-shielding state and a light-blocking state. In the light-shielding state, the photoelectric sensor can receive a signal reflected by the hole wall of the mounting hole and / or the insertion hole, and in the light-blocking state, the light shielding sheet can block the signal sent by the photoelectric sensor;

[0038] The elastic member is supported between the hole wall of the installation hole and the light shielding sheet. When the optical fiber plug is inserted into the insertion hole, the light shielding sheet is in a light shielding state; when the optical fiber plug is separated from the insertion hole, the elastic member can abut against the light shielding sheet to switch the light shielding sheet to a light-shielding state.

[0039] Beneficial effects:

[0040] The optical fiber plug fixing device of the utility model is used in an endoscope, and the photoelectric sensor is communicatively connected with the control module of the endoscope. When the optical fiber plug is inserted into the insertion hole, the shading sheet is in a shading state, and the photoelectric sensor cannot receive a signal. The control module can determine that the optical fiber plug has been inserted into the optical fiber plug fixing device and control the light source of the endoscope to emit light.

[0041] When the optical fiber plug is pulled out from the insertion hole, the light shielding sheet can be switched to a light-proof state under the action of the elastic member, the hole wall of the mounting hole and / or the insertion hole can reflect the signal sent by the photoelectric sensor, and the control module can determine that the optical fiber plug is pulled out and control the light source of the endoscope to turn off.

[0042] In a second aspect, the utility model further provides an endoscope, comprising:

[0043] The optical fiber plug fixing device as described in the first aspect of the utility model;

[0044] The optical fiber plug can be inserted into the insertion hole of the optical fiber plug fixing device.

[0045] Beneficial effects:

[0046] The endoscope of the second aspect of the utility model includes or uses the optical fiber plug fixing device of the first aspect of the utility model, and thus has its beneficial effects, namely, it can simultaneously perform reliable radial and axial limiting on the optical fiber plug, ensure the uniformity and stability of the illumination of the endoscope by the light source, ensure that the receiving surface of the optical fiber is directly opposite to the center of the optical axis, and avoid the loosening or detachment of the optical fiber plug fixing device after the optical fiber plug is connected to the optical fiber plug fixing device, resulting in insufficient light affecting the imaging quality or even the endoscope failing to work properly. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 A three-dimensional diagram of an optical fiber plug fixing device according to an embodiment of the utility model;

[0049] Figure 2 An exploded view of the optical fiber plug fixing device according to an embodiment of the utility model in the use state;

[0050] Figure 3 A cross-sectional view of the optical fiber plug fixing device of the embodiment of the utility model in the use state;

[0051] Figure 4 for Figure 3 An enlarged view of the optical fiber plug fixture at A;

[0052] Figure 5 It is an enlarged view of the adjustment component of the optical fiber plug fixing device according to the embodiment of the utility model.

[0053] Description of reference numerals:

[0054] 1. Main body; 101. Insertion hole; 102. Radial matching hole; 1021. Circumferential convex eaves; 103. Mounting hole;

[0055] 2. Elastic top pressure piece; 201. Spring; 202. Locking bead;

[0056] 3. Adjustment assembly; 301. Threaded knob; 302. Limiting column; 303. Slotted groove;

[0057] 4. Radiator; 401. Optical fiber plug light hole;

[0058] 601, shading sheet; 602, elastic member;

[0059] 7. Optical fiber plug; 701. Circumferential groove; 8. Photoelectric sensor. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0061] Combine the following Figures 1 to 5 , describing an embodiment of the utility model.

[0062] According to an embodiment of the utility model, on the one hand, a fiber optic plug fixing device is provided for fixing a fiber optic plug 7. The fiber optic plug fixing device comprises a main body 1, a plurality of radial matching holes 102 and a plurality of locking components. Among them, an insertion hole 101 for inserting the fiber optic plug 7 is formed on the main body 1. The plurality of radial matching holes 102 are arranged at intervals along the periphery of the insertion hole 101, and extend radially along the insertion hole 101 respectively, and a circumferential groove 701 is provided at the position where the fiber optic plug 7 matches with the radial matching hole 102. A locking component is arranged in each radial matching hole 102. The locking component can extend into the circumferential groove 701 and implement axial locking on the fiber optic plug 7.

[0063] The optical fiber plug fixing device of the embodiment of the utility model mainly forms a plurality of radial matching holes 102 arranged along the radial direction of the insertion hole 101 on the main body 1, and a locking component is arranged in each radial matching hole 102. When the optical fiber plug 7 is inserted into the insertion hole 101 on the main body 1, the plurality of locking components can extend into the circumferential groove 701 on the optical fiber plug 7 and apply a pressing force to the bottom of the circumferential groove 701, so that the optical fiber plug 7 is stably constrained in the insertion hole 101, thereby preventing the optical fiber plug 7 from loosening after being connected to the main body 1, affecting the uniformity and stability of the illumination of the endoscope by the light source.

[0064] At the same time, multiple locking components can cooperate with the groove wall of the circumferential groove 701 to axially limit the optical fiber plug 7. Therefore, the optical fiber plug fixture of the present application can simultaneously reliably limit the optical fiber plug 7 in radial and axial directions, ensure the uniformity and stability of the illumination of the endoscope by the light source, and prevent the optical fiber plug 7 from loosening or detaching from the optical fiber plug fixture after being plugged into the optical fiber plug fixture, resulting in insufficient light to affect the imaging quality or even the endoscope failing to work properly.

[0065] The optical fiber plug fixing device is preferably but not limited to an optical fiber socket.

[0066] In one embodiment, Figure 3 and Figure 4 As shown, the locking assembly includes an elastic pressing member 2, and the elastic pressing member 2 includes a spring 201 and a locking bead 202. The locking bead 202 abuts against a side of the spring 201 close to the insertion hole 101.

[0067] By such arrangement, when the operator inserts or removes the optical fiber plug 7, the locking bead 202 can roll, so that the optical fiber plug 7 can be pulled out from the main body 1. Even if the elastic element in the elastic pressing member 2 fails, the locking bead 202 can prevent the optical fiber plug 7 from getting stuck by rolling. The locking bead 202 is preferably, but not limited to, made of metal, plastic, ceramic or glass. For example, in the present embodiment, the locking bead 202 is a steel bead.

[0068] As a convertible embodiment, the elastic pressing member 2 includes a bullet-shaped locking head and an elastic plunger. The elastic plunger is installed in the radial matching hole 102, and the locking head is installed in the radial matching hole 102 and abuts against a side of the elastic plunger close to the insertion hole 101.

[0069] In one embodiment, the inner diameter of the spring 201 is 0.7 to 0.8 times the diameter of the locking bead 202. By such a configuration, it can be ensured that the locking bead 202 is reliably constrained at the end of the spring 201 and is partially located inside the spring 201, so that the spring 201 can provide a reliable supporting force to the locking bead 202, and the locking bead 202 can roll relative to the spring 201. Preferably, both end surfaces of the spring 201 are ground flat.

[0070] In one embodiment, a circumferential convex 1021 is formed at one end of the radial matching hole 102 close to the insertion hole 101, and the inner diameter of the circumferential convex 1021 is smaller than the diameter of the locking bead 202. The circumferential convex 1021 can prevent the locking bead 202 from falling into the insertion hole 101 under the pressure of the spring 201. Preferably, the taper of the side of the circumferential convex 1021 that abuts against the locking bead 202 is set to fit the locking bead 202, which can make the locking bead 202 rotate more smoothly in the radial matching hole 102, further reducing the risk of the optical fiber plug 7 getting stuck.

[0071] In one embodiment, the optical fiber plug fixture locking assembly further includes an adjustment assembly 3. The adjustment assembly 3 is installed in the radial matching hole 102 and abuts against the elastic top pressing piece 2 to compress or relax the spring 201. The adjustment assembly 3 can be used to adjust the abutting force applied by the elastic top pressing piece 2 to the bottom of the circumferential groove to adjust the optical fiber plug 7 so that the optical fiber receiving surface is aligned with the optical axis center of the light source, thereby improving the effect of the light source. When there are errors in the processing and assembly of parts, resulting in inconsistent support forces of multiple elastic top pressing pieces 2 on the optical fiber plug 7, the operator can compress or relax the spring 201 through the adjustment assembly 3 to avoid the optical fiber receiving surface of the optical fiber plug 7 from deviating from the optical axis center. When the spring 201 in the elastic top pressing piece 2 ages after long-term use, the operator can control the adjustment assembly 3 to compress the spring 201 to ensure that the elastic top pressing piece 2 can apply sufficient support force to the optical fiber plug 7, ensuring that the optical fiber plug fixture can implement reliable circumferential and axial limit on the optical fiber plug 7.

[0072] In one embodiment, Figure 4 and Figure 5 As shown, the adjustment component 3 includes a threaded knob 301 and a limiting column 302. Among them, an internal thread is formed on the inner wall of the radial matching hole 102, and the threaded knob 301 is threadedly connected to the internal thread. The limiting column 302 is connected to the threaded knob 301, and the spring 201 is sleeved on the limiting column 302 and abuts against the threaded knob 301. The locking force of the elastic top pressing member 2 on the optical fiber plug 7 can be adjusted by adjusting the number of turns of the threaded matching between the threaded knob 301 and the radial matching hole 102. For example, the operator can rotate the threaded knob 301 in a first direction so that the threaded knob 301 moves closer to the insertion hole 101 and compresses the spring 201, thereby increasing the locking force of the elastic top pressing member 2 on the optical fiber plug 7. The operator can also rotate the threaded knob 301 in a second direction so that the threaded knob 301 moves away from the insertion hole 101 and relaxes the spring 201, thereby reducing the locking force of the elastic top pressing member 2 on the optical fiber plug 7.

[0073] Preferably, a slot 303 is formed on the side of the threaded knob 301 away from the spring 201. The slot 303 can be matched with a slotted screwdriver, so that it is convenient for the operator to apply force to the threaded knob 301. As a convertible embodiment, a cross slot is formed on the side of the threaded knob 301 away from the spring 201. The cross slot can be matched with a cross screwdriver.

[0074] As a convertible embodiment, the adjustment component 3 is further selected to be slidably connected in the radial matching hole 102, and has damping between the radial matching hole 102. The operator can pull the adjustment component 3 out of the radial matching hole 102 or press it into the radial matching hole 102, thereby compressing or relaxing the spring 201.

[0075] In a preferred embodiment, the plurality of radial matching holes 102 are arranged at equal central angles. This arrangement ensures that the pressures applied by the plurality of elastic pressing members 2 to the optical fiber plug 7 can offset each other, thereby preventing the optical fiber receiving surface from deviating from the center of the optical axis.

[0076] In one embodiment, Figure 2 and Figure 3 As shown, the optical fiber plug fixing device also includes a heat sink 4, which is arranged on one side of the main body 1 and located at one end of the insertion hole 101, and can dissipate heat for the insertion end of the optical fiber plug 7 to avoid scalding the operator after the optical fiber plug 7 is pulled out.

[0077] The optical fiber plug fixing device also includes a heat sink 4 connected to the main body 1. An optical fiber plug light hole 401 is formed on the heat sink 4. The optical fiber plug light hole 401 is connected to the insertion hole 101, and the optical fiber plug 7 can enter the optical fiber plug light hole 401 through the insertion hole 101. The optical fiber plug light hole 401 can limit the optical fiber plug 7 to ensure that the receiving surface of the optical fiber is facing the center of the optical axis.

[0078] The heat sink 4 is preferably a machined part, which can not only conveniently control the processing accuracy of the optical fiber plug light hole 401, but also dissipate heat for the optical fiber head end, ensure that the optical fiber receiving surface is directly facing the center of the optical axis, and the optical fiber is not easy to shake.

[0079] In one embodiment, a mounting hole 103 connected to the insertion hole 101 is formed on the main body 1, and the mounting hole 103 is formed on one side of the main body 1 and extends radially along the insertion hole 101. The optical fiber plug fixing device also includes a photoelectric sensor 8, a light shielding sheet 601 and an elastic member 602. The photoelectric sensor 8 is arranged on one side of the main body 1, and is used to transmit a signal into the mounting hole 103. The light shielding sheet 601 is hinged in the mounting hole 103, and the light shielding sheet 601 has a light-shielding state and a light-shielding state. In the light-shielding state, the photoelectric sensor 8 can receive a signal reflected by the hole wall of the mounting hole 103 and / or the insertion hole 101. In the light-shielding state, the light-shielding sheet can block the signal emitted by the photoelectric sensor 8; the elastic member 602 is supported between the hole wall of the mounting hole 103 and the light-shielding sheet 601, and when the optical fiber plug 7 is inserted into the insertion hole 101, the light-shielding sheet 601 is in the light-shielding state; when the optical fiber plug 7 is detached from the insertion hole 101, the elastic member 602 can abut against the light-shielding sheet 601, so that the light-shielding sheet 601 is switched to the light-shielding state.

[0080] Preferably, the optical fiber plug fixing device of the utility model is used in an endoscope, and the photoelectric sensor 8 is communicatively connected with the control module of the endoscope. When the optical fiber plug 7 is inserted into the insertion hole 101, the shading sheet 601 is in a shading state, and the photoelectric sensor 8 cannot receive a signal. The control module can determine that the optical fiber plug 7 has been inserted into the optical fiber plug fixing device and control the light source of the endoscope to emit light.

[0081] When the fiber optic plug 7 is pulled out from the insertion hole 101, the shading sheet 601 can be switched to a light-shielding state under the action of the elastic member 602, and the photoelectric sensor 8 can receive the signal reflected by the wall of the mounting hole 103 and / or the insertion hole 101. The control module can determine that the fiber optic plug 7 is pulled out and control the light source of the endoscope to turn off. The signal emitted by the photoelectric sensor 8 is preferably but not limited to a pulse signal. The control module may include a programmable logic control component (such as a PLC or CPU), a memory, and electronic components connected to the programmable logic control component, etc., which are well known to those skilled in the art and will not be described in detail here. Figure 2 As shown, the mounting hole 103 is a square hole. As a convertible implementation, the mounting hole 103 can also be a circular hole or an elliptical hole as long as it does not interfere with the shading sheet 601.

[0082] According to an embodiment of the utility model, on the other hand, an endoscope is also provided, comprising an optical fiber plug fixing device and an optical fiber plug 7. The optical fiber plug 7 can be inserted into the insertion hole 101 of the optical fiber plug fixing device. The camera needs to be connected to the device when imaging, and is connected to the optical fiber plug fixing device through the optical fiber plug 7, and the optical fiber plug fixing device is fixed to the bottom plate of the light source host device.

[0083] The endoscope of the second aspect of the utility model includes or uses the optical fiber plug fixing device of the first aspect of the utility model, and thus has its beneficial effects, namely: it can simultaneously perform reliable radial and axial limiting on the optical fiber plug 7, thereby ensuring the uniformity and stability of the illumination of the endoscope by the light source, ensuring that the receiving surface of the optical fiber is directly opposite to the center of the optical axis, and preventing the optical fiber plug 7 from loosening or detaching from the optical fiber plug fixing device after being plugged into the optical fiber plug fixing device, resulting in insufficient light affecting the imaging quality or even the endoscope failing to work properly.

[0084] The circumferential groove 701 of the optical fiber plug 7 is preferably configured to fit with the outer wall of the locking bead 202 , so that the locking column can be pressed against the surface of the optical fiber plug 7 .

[0085] In summary, the optical fiber plug fixing device of the first aspect and the endoscope of the second aspect of the utility model have the following advantages: the elastic mechanism on the fixing seat fixes the slide groove on the optical fiber plug 7, and the elastic mechanism provides thrust to lock the optical fiber plug 7 on the fixing seat, so that the rigid optical laparoscopic endoscope will not deviate from the center of the optical axis due to the optical fiber receiving surface during use, and the optical fiber plugging and pulling force can be adjusted, the steel ball itself can roll and will not cause the optical fiber to get stuck during plugging and pulling due to failure of the elastic mechanism, affecting the optical performance and imaging quality, thereby affecting the use effect.

[0086] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An optical fiber plug fixing device for fixing an optical fiber plug (7), characterized in that: include: A main body (1), wherein the main body (1) is formed with an insertion hole (101) for inserting an optical fiber plug (7); A plurality of radial matching holes (102) are arranged at intervals along the periphery of the insertion hole (101) and respectively extend in the radial direction of the insertion hole (101); a circumferential groove (701) is provided at a position where the optical fiber plug (7) matches with the radial matching hole (102); A plurality of locking components, one of which is disposed in each radial matching hole (102), and the locking component can extend into the circumferential groove (701) and implement axial locking on the optical fiber plug (7).

2. The optical fiber plug fixing device according to claim 1, characterized in that: The locking assembly comprises an elastic pressing member (2), and the elastic pressing member (2) comprises: Spring (201); A locking bead (202) abuts against a side of the spring (201) close to the insertion hole (101).

3. The optical fiber plug fixing device according to claim 2, characterized in that: A circumferential convex flange (1021) is formed at one end of the radial matching hole (102) close to the insertion hole (101), and the inner diameter of the circumferential convex flange (1021) is smaller than the diameter of the locking bead (202).

4. The optical fiber plug fixing device according to claim 2, characterized in that: The locking assembly further comprises an adjusting assembly (3), wherein the adjusting assembly (3) is installed in the radial matching hole (102) and abuts against the elastic pressing member (2) to compress or relax the spring (201).

5. The optical fiber plug fixing device according to claim 4, characterized in that: The regulating component (3) comprises: A threaded knob (301), wherein an internal thread is formed on the inner wall of the radial matching hole (102), and the threaded knob (301) is threadedly connected to the internal thread; The limiting column (302) is connected to the threaded knob (301), and the spring (201) is sleeved on the limiting column (302) and abuts against the threaded knob (301).

6. The optical fiber plug fixing device according to any one of claims 1 to 5, characterized in that: The plurality of radial matching holes (102) are arranged at equal central angles.

7. The optical fiber plug fixing device according to any one of claims 1 to 5, characterized in that: It also comprises a heat sink (4), which is arranged on one side of the main body (1) and located at one end of the insertion hole (101) and can dissipate heat for the insertion end of the optical fiber plug (7).

8. The optical fiber plug fixing device according to claim 7, characterized in that: The heat sink (4) is formed with an optical fiber plug light-through hole (401), the optical fiber plug light-through hole (401) is connected to the insertion hole (101), and the optical fiber plug (7) can enter the optical fiber plug light-through hole (401) through the insertion hole (101).

9. The optical fiber plug fixing device according to any one of claims 1 to 5, characterized in that: The main body (1) is formed with a mounting hole (103) which is in communication with the insertion hole (101); the mounting hole (103) is formed on one side of the main body (1) and extends radially along the insertion hole (101); the optical fiber plug fixing device further comprises: A photoelectric sensor (8) is arranged on one side of the main body (1) and is used to transmit a signal into the mounting hole (103); a light shielding sheet (601) hinged in the mounting hole (103), the light shielding sheet (601) having a light-shielding state and a light-shielding state, wherein in the light-shielding state, the photoelectric sensor (8) can receive the signal reflected by the hole wall of the mounting hole (103) and / or the insertion hole (101), and in the light-shielding state, the light shielding sheet can block the signal emitted by the photoelectric sensor (8); An elastic member (602) is supported between the hole wall of the mounting hole (103) and the light shielding sheet (601); when the optical fiber plug (7) is inserted into the insertion hole (101), the light shielding sheet (601) is in a light shielding state; when the optical fiber plug (7) is separated from the insertion hole (101), the elastic member (602) can abut against the light shielding sheet (601) to switch the light shielding sheet (601) to a light-shielding state.

10. An endoscope, characterized in that: include: The optical fiber plug fixing device according to any one of claims 1 to 9; An optical fiber plug (7) can be inserted into an insertion hole (101) of the optical fiber plug fixing device.

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