CN215815927U

CN215815927U - Fixing device of super-radiation light-emitting diode

Info

Publication number: CN215815927U
Application number: CN202123231531.6U
Authority: CN
Inventors: 张润; 何威威; 吕小威; 李同宁; 游毓麒
Original assignee: Wuhan Yingfeihua Technology Co ltd
Current assignee: Wuhan Yingfeihua Technology Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-02-11
Anticipated expiration: 2031-12-22

Abstract

The application relates to a fixing device of a super-radiation light-emitting diode, which comprises a heat dissipation table, a connecting sheet, a pressing piece and a connecting rod, wherein the connecting sheet is used for being fixedly connected with a base of an SLD (super luminescent diode); an embedded groove is dug in the end face, close to the radiating table, of the pressing piece and used for accommodating the SLD; the base of the SLD and the connecting sheet are positioned on the same plane; the pressing piece is provided with a first through hole, the connecting piece is provided with a second through hole, and the heat dissipation table is provided with a third through hole; the other end of the connecting rod sequentially penetrates through the first through hole, the second through hole and the third through hole, the connecting rod is in threaded connection with the third through hole, and the inner diameter of the second through hole is larger than the outer diameter of the connecting rod. The application does not produce the atress relation between connection piece and the connecting rod, and when the connecting rod and the fixed in-process of heat dissipation platform spiro union, the connection piece can not produce stress deformation because of the removal of connecting rod, and then makes SLD's base can not produce stress deformation.

Description

Fixing device of super-radiation light-emitting diode

Technical Field

The application relates to the technical field of fixing devices, in particular to a fixing device for a super-radiation light-emitting diode.

Background

The super-radiation light emitting diode (SLD) is a semiconductor photoelectric device between a Laser (LD) and a Light Emitting Diode (LED), has the characteristics of high output power, wide spectral width and the like, and is suitable for applications such as an Optical Coherence Tomography (OCT) imaging system and an optical fiber gyroscope (FOG); in order to ensure heat dissipation and facilitate removal of a superluminescent light emitting diode (SLD) in use, a heat conductive silicone grease needs to be coated between an SLD base and a heat dissipation table. The conventional method for fixing the SLD is to install fixing screws at four corners of the SLD base to fix the SLD. However, the stress deformation of the base can be caused by uneven stress when the SLD base is fixed due to uneven coating of the heat-conducting silicone grease. The optical components of the SLD are welded to the base, and the stress deformation of the base causes the optical performance of the SLD to change.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a fixing device of super-radiation light-emitting diode to solve the problem that in the prior art, the SLD is fixed by installing fixing screws at four corners of the SLD base, because the heat-conducting silicone grease is not uniformly coated, the stress is not uniform when the SLD base is fixed, and further the stress deformation of the base is caused.

The technical scheme of the utility model is realized as follows:

a fixing device of a super-radiation light-emitting diode comprises a heat dissipation table, a connecting sheet, a pressing piece and a connecting rod, wherein the connecting sheet is used for being fixedly connected with a base of the super-radiation light-emitting diode; an embedded groove is dug in the position, close to the end face of the heat dissipation table, of the pressing piece, and the embedded groove is used for accommodating the super-radiation light-emitting diode; the base of the super-radiation light-emitting diode and the connecting sheet are positioned on the same plane; the pressing piece is provided with a first through hole, the connecting piece is provided with a second through hole, and the heat dissipation table is provided with a third through hole; the other end of the connecting rod sequentially penetrates through the first through hole, the second through hole and the third through hole, and the connecting rod is fixedly connected with the heat dissipation platform.

In some embodiments, the second through bore inner diameter is greater than the connecting rod outer diameter.

In some embodiments, the heat sink surface is provided with a thermally conductive layer.

In some embodiments, the heat conductive layer is provided with a fourth through hole through which the connection rod passes.

In some embodiments, the connecting piece includes a first mounting piece and a second mounting piece, the first mounting piece is used for being fixedly connected with one end of the super-radiation light-emitting diode, and the second mounting piece is used for being fixedly connected with the other end of the super-radiation light-emitting diode; the first mounting piece, the second mounting piece and the base of the super-radiation light-emitting diode are all positioned on the same plane and are integrally formed.

In some embodiments, an external thread is disposed at an end of the connecting rod away from the limiting member, an end of a return spring is connected to the end surface of the limiting member close to the pressing member, and the return spring is sleeved on the connecting rod.

In some embodiments, circular arc blocks are symmetrically arranged on the position of the position limiting member close to the end face of the pressing member, an annular groove matched with the circular arc blocks is dug in the position of the pressing member close to the end face of the position limiting member, and the annular groove and the first through hole are coaxially arranged.

In some embodiments, the first through hole is offset from the insertion groove.

In some embodiments, an anti-wear protective layer is disposed between the connecting rod and the second through hole, and the anti-wear protective layer is disposed on an outer surface of the connecting rod.

In some embodiments, a flexible shock absorbing layer is disposed within the embedded groove.

The beneficial effect that technical scheme that this application provided brought includes: the utility model provides a do not produce the atress relation between connection piece and the connecting rod, when the connecting rod with the fixed in-process of heat dissipation platform spiro union, the connection piece can not produce stress deformation because of the removal of connecting rod, and then makes SLD's base can not produce stress deformation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts from these drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of an explosive structure according to the present invention;

FIG. 3 is a schematic structural view of a position limiting member and a return spring according to the present invention;

FIG. 4 is a schematic diagram showing the relationship between the circular arc block and the annular groove according to the present invention;

FIG. 5 is a schematic view of the relationship between the positions of the circular arc block and the connecting rod according to the present invention;

FIG. 6 is a schematic view of a relationship between positions of the annular groove and the first through hole according to the present invention.

In the figure: 1. a heat dissipation table; 2. a superluminescent light emitting diode; 3. connecting sheets; 4. a compression member; 5. a connecting rod; 6. a limiting member; 7. a groove is embedded; 8. a heat conductive layer; 9. a return spring; 10. a circular arc block; 11. an annular groove; 12. a first through hole; 13. a second through hole; 14. a third via.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the present embodiment provides a fixing device for a super-radiation light emitting diode, which includes a heat dissipation platform 1, a connecting sheet 3 for fixedly connecting with a base of the super-radiation light emitting diode 2, a pressing member 4, and a connecting rod 5 having a limiting member 6 at one end. As shown in fig. 1 and fig. 2, the superluminescent light emitting diode 2 is a butterfly superluminescent light emitting diode.

The pressing piece 4 is close to the end face of the heat dissipation table 1, an embedded groove 7 is dug in the end face, the embedded groove 7 is used for containing the super-radiation light-emitting diode 2, and the super-radiation light-emitting diode 2 is arranged between the pressing piece 4 and the heat dissipation table 1. The base of the super-radiation light-emitting diode 2 and the connecting sheet 3 are positioned on the same plane. The pressing piece 4 is provided with a first through hole 12, and in some embodiments, the first through hole 12 is offset from the insertion groove 7. The connecting piece 3 is provided with a second through hole 13. The heat dissipation table 1 is provided with a third through hole 14, and inner side walls of the third through hole 14 are provided with internal threads. The other end of the connecting rod 5 sequentially penetrates through the first through hole 12, the second through hole 13 and the third through hole 14, the connecting rod 5 is in threaded connection with the third through hole 14, and the inner diameter of the second through hole 13 is larger than the outer diameter of the connecting rod 5.

When the connecting rod 5 is in threaded connection with the third through hole 14, the distance between the pressing piece 4 and the heat dissipation table 1 is continuously reduced, and then the super-radiation light-emitting diode 2 is fixed. This application passes through 13 internal diameters of second through-hole are greater than the design of 5 external diameters of connecting rod lets not produce the atress relation between connection piece 3 and the connecting rod 5, when connecting rod 5 with the fixed in-process of 1 spiro union of heat dissipation platform, connection piece 3 can not produce stress deformation because of the removal of connecting rod 5, and then makes super radiation emitting diode 2's base can not produce stress deformation.

In some embodiments, the connecting piece 3 includes a first mounting piece and a second mounting piece, the first mounting piece is used for being fixedly connected with one end of the superluminescent light emitting diode 2, and the second mounting piece is used for being fixedly connected with the other end of the superluminescent light emitting diode 2; the first mounting piece, the second mounting piece and the base of the super-radiation light-emitting diode 2 are all positioned on the same plane and are integrally formed. As shown in fig. 2, two second through holes 13 are provided on both the first mounting plate and the second mounting plate.

In some embodiments, the heat dissipation stage 1 is provided with a heat conductive layer 8 on the surface. The heat conduction layer 8 can enable the super-radiation light-emitting diode 2 to dissipate heat, and in this embodiment, the heat conduction layer 8 is heat conduction silica gel.

In some embodiments, the heat conducting layer 8 is provided with a fourth through hole through which the connection rod 5 passes. When the heat conduction layer 8 is not fixedly connected with the heat dissipation table 1, the heat conduction layer 8 can be prevented from moving by the way that the connecting rod 5 penetrates through the fourth through hole.

In some embodiments, an end of the connecting rod 5 away from the limiting member 6 is provided with an external thread, an end of the limiting member 6 near the end face of the pressing member 4 is connected with an end of a return spring 9, and the return spring 9 is sleeved on the connecting rod 5.

When the superluminescent light emitting diode 2 is fixed by the fixing device, the return spring 9 is in a compressed state. When the superluminescent light emitting diode 2 needs to be taken out from the fixing device, the limiting member 6 is screwed, so that the end of the connecting rod 5 with the thread is separated from the third through hole 14. When the connecting rod 5 is separated from the third through hole 14, the return spring 9 can return to the original length, and the distance between the limiting member 6 and the pressing member 4 is pulled open, so that the limiting member 6 and the connecting rod 5 can be taken out conveniently.

In some embodiments, circular arc blocks 10 are symmetrically disposed on the end surface of the limiting member 6 close to the pressing member 4, an annular groove 11 adapted to the circular arc blocks 10 is dug on the end surface of the pressing member 4 close to the limiting member 6, and the annular groove 11 and the first through hole 12 are coaxially disposed. The circular arc block 10 can play a role in limiting on one hand, and avoids the trouble of subsequent disassembly caused by too tight screwing between the end provided with the thread of the connecting rod 5 and the third through hole 14; the circular arc block 10 can play a certain guiding role on the other hand, and the connecting rod 5 is prevented from obliquely passing through the through hole.

In some embodiments, an anti-wear protective layer is disposed between the connecting rod 5 and the second through hole 13, and the anti-wear protective layer is disposed on the outer surface of the connecting rod 5. The anti-abrasion protective layer can prevent the connecting rod 5 from penetrating the second through hole 13 for multiple times, the inner side wall of the second through hole 13 is abraded, and the base of the super-radiation light-emitting diode 2 is prevented from being damaged. The wear-resistant protective layer can be a rubber wear-resistant protective layer.

In some embodiments, a flexible shock absorbing layer is provided in the embedded groove 7. The flexible shock-absorbing layer can prevent the pressing piece 4 from excessively pressing the super-radiation light-emitting diode 2, so that the surface of the super-radiation light-emitting diode 2 is deformed. The flexible shock-absorbing layer can be a heat-conducting silica gel flexible shock-absorbing layer, so that on one hand, shock-absorbing protection can be carried out, and on the other hand, heat dissipation of the super-radiation light-emitting diode 2 can be promoted.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. 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 application. Thus, the present application 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. A fixing device for a super-radiation light-emitting diode is characterized by comprising a heat dissipation table (1), a connecting sheet (3) fixedly connected with a base of the super-radiation light-emitting diode (2), a pressing piece (4) and a connecting rod (5) with one end provided with a limiting piece (6); an embedded groove (7) is dug in the position, close to the end face of the heat dissipation table (1), of the pressing piece (4), and the embedded groove (7) is used for accommodating the super-radiation light-emitting diode (2); the base of the super-radiation light-emitting diode (2) and the connecting sheet (3) are positioned on the same plane; the pressing piece (4) is provided with a first through hole (12), the connecting piece (3) is provided with a second through hole (13), and the heat dissipation table (1) is provided with a third through hole (14); the other end of the connecting rod (5) sequentially penetrates through the first through hole (12), the second through hole (13) and the third through hole (14), and the connecting rod (5) is fixedly connected with the radiating table (1).

2. A fixation device for superluminescent light emitting diodes as claimed in claim 1, characterized in that said second through hole (13) has an inner diameter larger than an outer diameter of said connection rod (5).

3. A fixing device of super-radiation LED according to claim 1, characterized in that the surface of the heat sink (1) is provided with a heat conducting layer (8).

4. A fixation device for superluminescent light emitting diodes as claimed in claim 3, wherein said heat conducting layer (8) is provided with a fourth through hole through which said connection rod (5) passes.

5. The fixing device of the superluminescent diode of claim 1, wherein the connecting sheet (3) comprises a first mounting sheet and a second mounting sheet, the first mounting sheet is used for being fixedly connected with one end of the superluminescent diode (2), and the second mounting sheet is used for being fixedly connected with the other end of the superluminescent diode (2); the first mounting piece, the second mounting piece and the base of the super-radiation light-emitting diode (2) are all located on the same plane and are integrally formed.

6. The fixing device of the superluminescent light-emitting diode of claim 1, wherein an end of the connecting rod (5) far from the limiting member (6) is provided with an external thread, an end of the limiting member (6) near the end face of the pressing member (4) is connected with an end of a return spring (9), and the return spring (9) is sleeved on the connecting rod (5).

7. The fixing device of the super-radiation light-emitting diode according to claim 1, wherein the limiting member (6) is symmetrically provided with circular arc blocks (10) near the end surface of the pressing member (4), the pressing member (4) is dug with an annular groove (11) matching with the circular arc blocks (10) near the end surface of the limiting member (6), and the annular groove (11) is coaxially arranged with the first through hole (12).

8. The fixing device of the superluminescent light emitting diode of claim 1, wherein the first through hole (12) is offset from the insertion groove (7).

9. The fixing device of the super-radiation light-emitting diode according to the claim 1, characterized in that an anti-abrasion protective layer is arranged between the connecting rod (5) and the second through hole (13), and the anti-abrasion protective layer is arranged on the outer surface of the connecting rod (5).

10. The fixing device of the superluminescent light emitting diode of claim 1, wherein a flexible shock absorbing layer is arranged in the embedding groove (7).