Optical module structure
By designing a limit structure at the junction of the PCBA board of the optical module and the device housing, the problem of falling off caused by mismatch in the thermal expansion coefficient of the existing optical module is solved, and higher stability and reliability are achieved.
Patent Information
- Application Number
- CN202422079213.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The PCBA board of the existing optical module and the device housing are at risk of falling off after assembly due to the thermal expansion coefficient.
An optical module structure is designed, by providing a limit structure at the junction between the PCBA board and the device housing, including a first limit section and a second limit section, and matching the limit notch and limit card slot, the movement of the PCBA board is restricted and fallen off.
It effectively reduces the risk of PCBA board disconnection from the device housing under temperature changes, and improves the stability and reliability of the optical module.
Smart Images
Figure CN222913927U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of optical communication, and particularly relates to an optical module structure. Background Art
[0002] The assembly structure of the PCBA board and the device housing of the existing conventional COB-packaged optical module is as Figure 1 shown. The end of the PCBA board 1 is directly inserted into the device housing 2 and fixed with glue. However, the PCBA board 1 and the device housing 2 are not limited in the direction in which the PCBA board 1 extends into the device housing 2, and the limitation is completely dependent on the glue. Due to the mismatch of the thermal expansion coefficients of the PCBA board 1, the device housing 2, and the glue, affected by temperature, there is a risk of detachment between the PCBA board 1 and the device housing 2 after a long time. Summary of the Utility Model
[0003] The purpose of the utility model is to provide an optical module structure, which can at least solve some defects existing in the prior art.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme:
[0005] An optical module structure includes a device housing and a PCBA board. The end of the PCBA board has a connection part for connecting with the device housing. An opening groove for the connection part to be snapped into is provided on one side wall of the device housing corresponding to the PCBA board, and a limiting structure for limiting the connection part is provided at the opening groove.
[0006] Further, both sides of the connection part of the PCBA board have first limiting segments extending outwards, which are used for being cooperatively snapped with the inner side surfaces of the opening groove located inside the device housing.
[0007] Further, a limiting member for restricting the movement of the first limiting segment is provided inside the device housing corresponding to the first limiting segment.
[0008] Further, the limiting member is a limiting card slot.
[0009] Further, the width of the connection part of the PCBA board is equal to the width of the opening groove.
[0010] Further, limiting notches are symmetrically arranged at the bottoms of the inner side walls of the opening groove. Both sides of the connection part of the PCBA board have second limiting segments extending outwards, and the second limiting segments are cooperatively snapped with the limiting notches.
[0011] Further, the distance between the inner side walls of the two limiting notches is equal to the distance between the second limiting segments on both sides of the connection part.
[0012] Further, the upper surface of the limiting notch fits with the upper surface of the second limiting section.
[0013] Further, glue is applied at the joint positions of the first limiting section and the second limiting section with the device housing.
[0014] Further, both the first limiting section and the second limiting section are integrally formed with the connecting portion.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] The optical module structure provided by the present utility model designs a limiting structure at the joint of the PCBA board and the device housing to limit the movement of the PCBA board after being assembled with the device housing, thereby greatly reducing the risk that the assembly of the PCBA board and the device housing becomes disconnected due to temperature influence.
[0017] The following will further elaborate on the present utility model in detail with reference to the accompanying drawings. Description of the Drawings
[0018] Figure 1 is an assembly schematic diagram of the PCBA board and the device housing of a conventional optical module;
[0019] Figure 2 is a schematic diagram of the optical module structure of the present utility model;
[0020] Figure 3 is a schematic diagram of the PCBA board in the optical module structure of the present utility model;
[0021] Figure 4 is a schematic diagram of the device housing in the optical module structure of the present utility model.
[0022] Description of the reference numerals: 1, PCBA board; 2, device housing; 3, connecting portion; 4, opening groove; 5, first limiting section; 6, second limiting section; 7, limiting notch; 8, limiting card slot. Detailed Embodiments
[0023] 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 of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a contact connection or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0026] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.
[0027] As Figure 2 、 Figure 3 and Figure 4 shown, this embodiment provides an optical module structure, including a device housing 2 and a PCBA board 1. The end of the PCBA board 1 has a connection portion 3 for connecting with the device housing 2. An opening groove 4 for the connection portion 3 to be snapped into is provided on a side wall of the device housing 2 corresponding to the PCBA board 1, and a limiting structure for limiting the connection portion 3 is provided at the opening groove 4. In this embodiment, by designing a limiting structure at the joint of the PCBA board 1 and the device housing 2, the movement of the PCBA board 1 after being assembled with the device housing 2 is restricted, thereby greatly reducing the risk that the assembly of the PCBA board 1 and the device housing 2 becomes disconnected due to temperature influence.
[0028] As a specific implementation manner, as Figure 2 and Figure 3As shown, on both sides of the connecting portion 3 of the PCBA board 1, there are first limiting segments 5 extending outward, which are used to cooperate and engage with the side surface located inside the device housing 2 at the opening groove 4. Among them, the first limiting segment 5 and the side wall surface corresponding to the connecting portion 3 of the PCBA board 1 inside the device housing 2 together form a limiting structure; when the PCBA board 1 is assembled with the device housing 2, the connecting portion 3 of the PCBA board 1 reaches the assembly position downward from the opening groove 4 of the device housing 2, and at the same time, the first limiting segment 5 abuts against the side wall surface corresponding to the connecting portion 3 of the PCBA board 1 inside the device housing 2, so as to limit the horizontal extraction of the PCBA board 1 from the device housing 2.
[0029] Preferably, as Figure 2 and Figure 4 shown, inside the device housing 2 corresponding to the first limiting segment 5, there is a limiting member for restricting the movement of the first limiting segment 5; specifically, the limiting member is a limiting card slot 8. When the PCBA board 1 is assembled with the device housing 2, the first limiting segment 5 is engaged in the limiting card slot 8, so as to limit the movement of the PCBA board 1 in the X-axis direction.
[0030] In some embodiments, the width of the connecting portion 3 of the PCBA board 1 can be designed to be equal to the width of the opening groove 4, so that the connecting portion 3 of the PCBA board 1 is snap-connected in the opening groove 4, and the movement of the PCBA board 1 in the Y-axis direction can be restricted by the side wall surfaces on both sides of the opening groove 4.
[0031] In some embodiments, limiting notches 7 can also be symmetrically arranged at the bottoms of the two inner side walls of the opening groove 4. At the same time, second limiting segments 6 extending outward are arranged on both sides of the connecting portion 3 of the PCBA board 1, and the second limiting segments 6 are engaged with the limiting notches 7 in a matching manner; preferably, the second limiting segments 6 and the first limiting segments 5 are designed to form a stepped structure. When the PCBA board 1 is assembled with the device housing 2, the first limiting segment 5 is engaged in the limiting card slot 8, and the two side wall surfaces of the limiting card slot 8 are used to limit the first limiting segment 5, so as to limit the movement of the PCBA board 1 in the X-axis direction. At the same time, the second limiting segment 6 is engaged in the limiting notch 7, and the opposite inner side wall surfaces of the two limiting notches 7 are used to limit the movement of the PCBA board 1 in the Y-axis direction, and the upper and lower surfaces of the limiting notch 7 are used to limit the movement of the PCBA board 1 in the Z-axis direction; this limiting method in this embodiment enables the PCBA board 1 to be restricted in movement in the X, Y, and Z directions after being assembled with the device housing 2, greatly reducing the risk that the PCBA board 1 and the device housing 2 are disengaged due to the influence of temperature on the assembled body.
[0032] Preferably, the distance between the inner side walls of the two limiting notches 7 is designed to be equal to the distance between the second limiting segments 6 on both sides of the connecting portion 3; the upper surface of the limiting notch 7 is fitted with the upper surface of the second limiting segment 6; so as to ensure that the second limiting segment 6 is clamped in the limiting notch 7 without shaking.
[0033] Preferably, it is designed that both the first limiting segment 5 and the second limiting segment 6 are integrally formed with the connecting portion 3.
[0034] Furthermore, in order to ensure the stability of the connection between the PCBA board 1 and the device housing 2, glue can be applied at the joint positions of the first limiting segment 5 and the second limiting segment 6 and the device housing 2.
[0035] The assembly process of the optical module structure in this embodiment is as follows: First, fix the device housing 2 on the assembly fixture; then, insert the connecting portion 3 of the PCBA board 1 from the opening groove 4 of the device housing 2, and connect the first limiting segment 5 and the second limiting segment 6 to the corresponding parts on the device housing 2; then apply glue at the joint position of the PCBA board 1 and the device housing 2; finally, put the product together with the assembly fixture into the oven to bake and cure the glue.
[0036] The above examples are only illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. Any design identical or similar to the present invention falls within the protection scope of the present invention.
Claims
1. An optical module structure, comprising a device housing and a PCBA board, characterized in that: The end of the PCBA board has a connecting part for connecting to the device housing, and the device housing is provided with an opening groove for the connecting part to be inserted into a side wall corresponding to the PCBA board, and a limiting structure for limiting the connecting part is provided at the opening groove.
2. The optical module structure according to claim 1, characterized in that: Both sides of the connection portion of the PCBA board have first limiting sections extending outwards, which are used to cooperate and snap-fit with a side surface of the opening groove located inside the device housing.
3. The optical module structure according to claim 2, characterized in that: A limiting member for limiting the movement of the first limiting section is provided inside the device housing at a position corresponding to the first limiting section.
4. The optical module structure according to claim 3, characterized in that: The limiting component is a limiting slot.
5. The optical module structure according to claim 2, characterized in that: The width of the connecting portion of the PCBA board is equal to the width of the opening groove.
6. The optical module structure according to any one of claims 2 to 5, characterized in that: The bottom of the two inner side walls of the opening groove are symmetrically provided with limiting notches, and the two sides of the connecting portion of the PCBA board have second limiting sections extending outward, and the second limiting sections are matched and snap-fitted with the limiting notches.
7. The optical module structure according to claim 6, characterized in that: The distance between the inner side walls of the two limiting grooves is equal to the distance between the second limiting sections on both sides of the connecting portion.
8. The optical module structure according to claim 6, characterized in that: The upper surface of the limiting groove is in contact with the upper surface of the second limiting section.
9. The optical module structure according to claim 6, characterized in that: Glue is applied to the joints between the first limiting section, the second limiting section and the device housing.
10. The optical module structure according to claim 6, characterized in that: The first limiting section and the second limiting section are both integrally formed with the connecting portion.