Optical fiber connection structure
Through the split fiber connection structure, the bending distance of the fiber bundle is increased, which solves the problem of excessive stress in the cutting and grinding of the fiber bundle, and improves the imaging quality of the endoscope.
Patent Information
- Application Number
- CN202422021724.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In existing endoscopes, fiber bundles are prone to fracture due to excessive stress during cutting and grinding, which affects the imaging quality.
The optical fiber connection structure arranged in a separate body is adopted, through the separation and combination state of the first connector and the second connector, the bending distance of the optical fiber bundle before and after cutting, grinding and other processes is increased, and the optical fiber bundle stress is reduced.
It effectively reduces the number of fiber breaks in cutting, grinding and other processes, ensures the light intensity of incident light, and improves the imaging quality of the endoscope.
Smart Images
Figure CN222994745U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of endoscopes, and particularly relates to an optical fiber connection structure. Background Art
[0002] An endoscope is an important tool in the industrial field and the medical field. Based on optical and image processing technologies, through the reflection and refraction of lenses, an endoscope can help workers observe areas with narrow fields of view or areas that cannot be directly observed and make diagnoses, so as to improve the workers' observation and diagnostic capabilities.
[0003] Existing endoscopes mainly include structures such as a housing, an incident optical fiber, and a light source connection cavity. The incident optical fiber can provide incident light. Generally, the direction of the emitted light of the incident optical fiber is perpendicular to the axis of the light source connection cavity. The emitted light of the incident optical fiber is converted into light parallel to the axis of the light source connection cavity after reflection. The incident optical fiber is generally an optical fiber bundle composed of a large number of optical fibers. In order to ensure that the direction of the emitted light of the incident optical fiber is perpendicular to the axis of the light source connection cavity, an "L-shaped" connector is generally used. The optical fiber passes through the cavity in the "L-shaped" connector, that is, enters from the tail of the "L-shaped" connector and exits from the head of the "L-shaped" connector, and the "L-shaped" connector is fixedly installed on structures such as the light source connection cavity or the housing. The existing "L-shaped" connector is of an integrated design. In actual processing, after the optical fiber bundle extends to the head of the "L-shaped" connector as a whole, the optical fiber bundle is cut, polished, coated with a film, sealed with glue, etc. with the horizontal position of the head of the "L-shaped" connector as a reference plane. Since the overall size of the "L-shaped" connector is small, when cutting, polishing, coating with a film, sealing with glue, etc. are performed on the optical fiber bundle, the cutting, polishing, etc. positions are relatively close to the bending position of the optical fiber bundle, that is, the stress on the part of the optical fiber bundle where the cutting and polishing are performed is relatively large. Under the vibration of cutting, polishing and other operations, some optical fibers in the optical fiber bundle will break, resulting in a decrease in the light intensity of the incident light provided by the optical fiber bundle and affecting the imaging quality of the endoscope.
[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model
[0005] The purpose of the present utility model is to provide an optical fiber connection structure, which can reduce the number of broken optical fibers in the optical fiber bundle during cutting, polishing, etc. of the optical fiber bundle installed on the optical fiber connection structure and ensure the light intensity of the incident light provided by the optical fiber bundle.
[0006] To achieve the above purpose, the technical solution provided by a specific embodiment of the present utility model is as follows: an optical fiber connection structure, including a first connector and a second connector which are separately arranged;
[0007] The first connecting member has a first receiving hole for receiving an optical fiber bundle. The first receiving hole includes an inlet and an outlet, and the central axis of the inlet is not parallel to the central axis of the outlet.
[0008] The second connecting member is used to connect with the outlet of the first connecting member. The second connecting member has a second receiving hole for receiving an optical fiber bundle, and the second receiving hole communicates with the first receiving hole.
[0009] In one or more embodiments of the present utility model, the optical fiber connection structure has a separated state and a combined state.
[0010] In the separated state, the second connecting member and the first connecting member are separated from each other.
[0011] In the combined state, the second connecting member is inserted into the outlet of the first connecting member.
[0012] In one or more embodiments of the present utility model, the optical fiber connection structure further includes a fixing member. In the combined state, the fixing member is connected to the second connecting member and the first connecting member to fix the second connecting member to the first connecting member.
[0013] In one or more embodiments of the present utility model, the fixing member has an external thread, and the second connecting member is provided with a threaded hole.
[0014] In the combined state, a part of the fixing member is connected to the first connecting member, and the external thread is threadedly connected to the threaded hole.
[0015] In one or more embodiments of the present utility model, a connection hole communicating with the first receiving hole is provided on the outer peripheral surface of the first connecting member. In the combined state, a part of the fixing member is connected to the connection hole.
[0016] In one or more embodiments of the present utility model, in the combined state, a part of the fixing member is inserted into and bonded to the connection hole.
[0017] In one or more embodiments of the present utility model, the insertion direction of the second connecting member into the outlet of the first connecting member is not parallel to the axial direction of the connection hole.
[0018] In one or more embodiments of the present utility model, the second connecting member includes a connected body portion and a connecting portion, and an abutting surface is formed at the connection between the body portion and the connecting portion. In the combined state, the connecting portion is inserted into the outlet of the first connecting member, and the abutting surface abuts against the outer peripheral surface of the first connecting member.
[0019] In one or more embodiments of the present utility model, a connection groove is provided on the body portion, and the connection groove is used to connect with a light source connection cavity.
[0020] In one or more embodiments of the present utility model, the first connecting member is a columnar first connecting member, the inlet is provided at one axial end of the first connecting member, and the outlet is provided on the outer peripheral surface of the first connecting member axially.
[0021] Compared with the prior art, in the optical fiber connection structure of the present utility model, since the first connecting member and the second connecting member are separately provided, the optical fiber bundle can first pass through the inlet of the first accommodating hole, extend out from the outlet, then pass through and extend out of the second accommodating hole, and before performing processes such as cutting, grinding, coating, and sealing on the part of the optical fiber bundle that extends out of the second accommodating hole, first increase the distance between the first connecting member and the second connecting member. Since the optical fiber bundle is bent in the first accommodating hole, increasing the distance between the first connecting member and the second connecting member can increase the distance between the part of the optical fiber bundle that extends out of the second accommodating hole and the bending part of the optical fiber bundle, and then perform processes such as cutting, grinding, coating, and sealing, which can reduce the number of optical fiber breaks in the optical fiber bundle caused by excessive self-stress of the part of the optical fiber bundle that extends out of the second accommodating hole during the above processes. When the processes such as cutting, grinding, coating, and sealing are completed, then move the first connecting member on the optical fiber bundle to make it close to the second connecting member, and make the second connecting member inserted into the inlet of the first accommodating hole, and finally install the second connecting member on the light source connection cavity to realize the assembly of the optical fiber connection structure. Description of the Drawings
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0023] Figure 1 Partial internal schematic diagram of the endoscope system in an embodiment of the present utility model;
[0024] Figure 2 Three-dimensional view of the optical fiber connection structure in a separated state in an embodiment of the present utility model;
[0025] Figure 3 Three-dimensional view of the optical fiber connection structure in an assembled state in an embodiment of the present utility model;
[0026] Figure 4 Cross-sectional view of the optical fiber connection structure in an assembled state in an embodiment of the present utility model.
[0027] Main reference numeral description:
[0028] 1. Optical fiber connection structure; 11. First connecting member; 111. First receiving hole; 112. Entrance; 113. Exit; 114. Connection hole; 12. Second connecting member; 121. Body portion; 122. Connecting portion; 123. Second receiving hole; 124. Connection groove; 125. Threaded hole; 126. Contact surface; 13. Fixing member; 2. Light source connection cavity; 21. Connection port; 3. Optical fiber bundle. Detailed implementation manner
[0029] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0030] Since the endoscope system requires an optical fiber bundle to provide a light source, if the optical fiber bundle is directly connected to the connection port at the lower end of the light source connection cavity, because the optical fiber bundle (the optical fiber bundle is generally composed of multiple optical fibers) is flexible by itself, the exit end of the optical fiber bundle cannot be guaranteed to be vertically connected to the connection port. Therefore, in the prior art, a connecting member (equivalent to the optical fiber connection structure in the present utility model) is installed at the connection port at the lower end of the light source connection cavity. The connecting member is sleeved outside the optical fiber bundle, bends and limits the optical fiber bundle, fixes the exit end of the optical fiber bundle and makes the exit end of the optical fiber bundle vertically installed at the connection port.
[0031] In the prior art, after the optical fiber bundle passes through the connecting member, in order to ensure the stability of the subsequent light source and the installation requirements, processes such as cutting, grinding, coating, and sealing are required for the part of the optical fiber bundle that penetrates through the connecting member to form a flat light source exit surface. The cutting part is generally at the optical fiber bundle exit of the connecting member. Since the connecting member is integrally formed and the size of the connecting member is small, the distance between the cutting, grinding, etc. parts on the optical fiber bundle and the bending part of the optical fiber bundle located inside the connecting member is relatively close, resulting in greater stress on the cutting, grinding, etc. parts of the optical fiber bundle. After processes with high vibrations such as cutting and grinding, the probability of a single optical fiber in the optical fiber bundle breaking increases, thereby reducing the light intensity of the light source provided by the optical fiber bundle to the endoscope and affecting the imaging of the endoscope.
[0032] Such as Figures 1 to 4As shown in the figure, a fiber optic connection structure in an embodiment of the present utility model can be applied to an endoscope system. The fiber optic connection structure 1 includes a first connector 11 and a second connector 12 that are separately arranged. The first connector 11 has a first receiving hole 111 for receiving the fiber optic bundle 3. The first receiving hole 111 includes an inlet 112 and an outlet 113, and the central axis of the inlet 112 is not parallel to the central axis of the outlet 113. The second connector 12 is used to connect to the outlet 113 of the first connector 11, and the second connector 12 has a second receiving hole 123 for receiving the fiber optic bundle 3, and the second receiving hole 123 communicates with the first receiving hole 111.
[0033] It can be understood that, as Figure 1 shown, before the fiber optic bundle 3 enters the fiber optic connection structure 1, its extending direction is generally perpendicular to the axial direction of the connection port at the lower end of the light source connection cavity or has a certain inclination angle. Therefore, the fiber optic connection structure 1 is required to bend the fiber optic bundle 3 before connecting it to the connection port at the lower end of the light source connection cavity, that is, the fiber optic bundle 3 can first pass through the inlet 112 of the first receiving hole 111, extend out from the outlet 113, then pass through and extend out of the second receiving hole 123. Before performing processes such as cutting, grinding, coating, and sealing on the part of the fiber optic bundle 3 that extends out of the second receiving hole 123, first increase the distance between the first connector 11 and the second connector 12. Since the fiber optic bundle 3 is bent within the first receiving hole 111, increasing the distance between the first connector 11 and the second connector 12 can increase the distance between the part of the fiber optic bundle 3 that extends out of the second receiving hole 123 and the bent part of the fiber optic bundle 3. Then, processes such as cutting, grinding, coating, and sealing are performed, which can reduce the number of fiber breaks in the fiber optic bundle 3 caused by excessive self-stress in the part of the fiber optic bundle 3 that extends out of the second receiving hole 123 during the above processes. When the processes such as cutting, grinding, coating, and sealing are completed, then move the first connector 11 on the fiber optic bundle 3 to make it close to the second connector 12, and make the second connector 12 inserted into the inlet 112 of the first receiving hole 111. Finally, install the second connector 12 at the connection port 21 at the lower end of the light source connection cavity 2 to complete the assembly of the fiber optic connection structure 1.
[0034] As Figures 2 to 4 shown, the fiber optic connection structure 1 has a separated state (as Figure 2 shown) and a combined state (as Figure 3 and 4As shown; in the separated state, the second connecting member 12 and the first connecting member 11 are separated; in the combined state, the outlet 113 of the second connecting member 12 and the first connecting member 11 are inserted into each other. When installing the optical fiber connection structure 1 with the optical fiber bundle 3 and the light source connection cavity 2, the optical fiber connection structure 1 is first in the separated state. After the optical fiber bundle 3 undergoes processes such as cutting, grinding, coating, and sealing, the second connecting member 12 and the first connecting member 11 are then installed, that is, the optical fiber connection structure 1 changes from the separated state to the combined state, and finally it is installed on the light source connection cavity 2.
[0035] Preferably, the first connecting member 11 is a columnar first connecting member 11, the inlet 112 is provided at one axial end of the first connecting member 11, and the outlet 113 is provided on the outer peripheral surface of the first connecting member 11 in the axial direction. That is, there is at least one corner in the first receiving hole 111 in the first connecting member 11, which functions to change and define the optical fiber bundle 3, that is, the optical fiber bundle 3 is bent within the first connecting member 11. The second receiving hole 123 on the second connecting member 12 can be a straight through hole and does not function to bend and define the optical fiber bundle 3.
[0036] Furthermore, the optical fiber connection structure 1 further includes a fixing member 13. In the combined state, the fixing member 13 is connected to the second connecting member 12 and the first connecting member 11 to fix the second connecting member 12 to the first connecting member 11. The fixing member 13 functions to fixedly connect the second connecting member 12 and the first connecting member 11.
[0037] Specifically, in this embodiment, the fixing member 13 has an external thread, and the second connecting member 12 is provided with a threaded hole 125; in the combined state, a part of the fixing member 13 is connected to the first connecting member 11, and the external thread is threadedly connected to the threaded hole 125. That is, the threaded connection between the fixing member 13 and the first connecting member 11 is achieved, and the detachable connection of the fixing member 13, the first connecting member 11, and the second connecting member 12 can also be achieved.
[0038] Specifically, a connection hole 114 communicating with the first receiving hole 111 is provided on the outer peripheral surface of the first connecting member 11. In the combined state, a part of the fixing member 13 is connected to the connection hole 114.
[0039] Specifically, the insertion direction of the outlet 113 of the second connecting member 12 and the first connecting member 11 is not parallel to the axial direction of the connection hole 114. Preferably, in this embodiment, the insertion direction of the outlet 113 of the second connecting member 12 and the first connecting member 11 is perpendicular to the axial direction of the connection hole 114.
[0040] Further, in the combined state, a part of the fixing member 13 is inserted into and bonded to the connection hole 114, so that the fixing member 13 stably connects the second connecting member 12 and the first connecting member 11.
[0041] In other embodiments, the insertion direction of the second connecting member 12 and the outlet 113 of the first connecting member 11 may also be parallel to the axial direction of the connection hole 114. In the combined state, a part of the fixing member 13 is inserted into and bonded to the connection hole 114, so that the fixing member 13 stably connects the second connecting member 12 and the first connecting member 11.
[0042] As Figure 2 and 3 shown, the second connecting member 12 includes a connected body portion 121 and a connecting portion 122, and a contact surface 126 is formed at the connection between the body portion 121 and the connecting portion 122; in the combined state, the connecting portion 122 is inserted into the outlet 113 of the first connecting member 11, and the contact surface 126 abuts against the outer peripheral surface of the first connecting member 11. The contact surface 126 serves to limit the insertion depth of the second connecting member 12 into the first connecting member 11.
[0043] Further, a connection groove 124 is provided on the body portion 121, and the connection groove 124 is used to connect with the light source connection cavity 2. Specifically, the body portion 121 can be inserted into the light source connection cavity 2, and is tightened inwardly by a structure such as a setscrew or a screw installed on the inner wall of the light source connection cavity 2 into the connection groove 124, so as to vertically fix the second connecting member 12 below the light source connection cavity 2, realizing the fixed connection between the light source connection cavity 2 and the second connecting member 12.
[0044] As Figure 1 shown, an embodiment of the present invention also discloses an endoscope system, including a connected light source connection cavity 2, an optical fiber connection structure 1, and an optical fiber bundle 3.
[0045] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.
[0046] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An optical fiber connection structure, characterized in that: It includes a first connecting member and a second connecting member which are separately arranged; The first connecting member has a first accommodating hole for accommodating the optical fiber bundle, the first accommodating hole includes an inlet and an outlet, and the central axis of the inlet is not parallel to the central axis of the outlet; The second connecting member is used to be connected to the outlet of the first connecting member. The second connecting member has a second accommodating hole for accommodating the optical fiber bundle. The second accommodating hole is communicated with the first accommodating hole.
2. The optical fiber connection structure according to claim 1, characterized in that: The optical fiber connection structure has a separated state and a combined state; In the separated state, the second connecting member is separated from the first connecting member; In the assembled state, the second connector is plugged into the outlet of the first connector.
3. The optical fiber connection structure according to claim 2, characterized in that: The optical fiber connection structure also includes a fixing member, which is connected to the second connecting member and the first connecting member in a combined state to fix the second connecting member on the first connecting member.
4. The optical fiber connection structure according to claim 3, characterized in that: The fixing member is provided with an external thread, and the second connecting member is provided with a threaded hole; In the assembled state, a portion of the fixing member is connected to the first connecting member, and the external thread is threadedly connected to the threaded hole.
5. The optical fiber connection structure according to claim 4, characterized in that: A connecting hole communicating with the first accommodating hole is provided on the outer peripheral surface of the first connecting member. In the assembled state, a part of the fixing member is connected with the connecting hole.
6. The optical fiber connection structure according to claim 5, characterized in that: In the assembled state, a portion of the fixing piece is plugged into and bonded to the connecting hole.
7. The optical fiber connection structure according to claim 5, characterized in that: The plugging direction of the outlets of the second connecting member and the first connecting member is not parallel to the axial direction of the connecting hole.
8. The optical fiber connection structure according to claim 2, characterized in that: The second connector includes a main body and a connecting part connected to each other, and an abutment surface is formed at the connection between the main body and the connecting part; in the assembled state, the connecting part is plugged into the outlet of the first connector, and the abutment surface abuts against the outer peripheral surface of the first connector.
9. The optical fiber connection structure according to claim 8, characterized in that: The main body is provided with a connecting groove, and the connecting groove is used to connect with the light source connecting cavity.
10. The optical fiber connection structure according to claim 1, characterized in that: The first connecting member is a columnar first connecting member, the inlet is arranged at one axial end of the first connecting member, and the outlet is arranged on an axial outer peripheral surface of the first connecting member.