Solid-state laser radar module convenient to assemble

Abstract

A solid-state laser radar module convenient to assemble comprises a front shell and a rear shell which are connected into a whole, the front end of the front shell is connected with a lens shell, an integrated lens barrel is detachably connected with the front shell through a connecting bolt, a lens group is preset in the integrated lens barrel, and a PCBA board is arranged on the back face of the integrated lens barrel. According to the laser radar module, the transmitting lens, the receiving lens, the PCB and other core components are integrated in the integrated lens cone to serve as a standard component, then the next step of assembly is carried out, during assembly, only the standard component needs to be assembled in the front shell, then the rear shell is covered, and the front shell and the rear shell are welded and packaged, so that modularization and rapidness during assembly are achieved, and the assembly efficiency is improved. And parts and detachability are realized during maintenance. Core assemblies such as a lens and a PCB do not need to be carefully installed after a die casting is integrally formed in the prior art, the assembly difficulty can be greatly reduced, meanwhile, the overall scrapping of the die casting shell is not caused, only parts are replaced when a certain lens is damaged, and then the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser radar module technical field, specifically a kind of solid-state laser radar module of being convenient for assembly. BACKGROUND

[0002] The working principle of solid-state laser radar module is based on the combination of laser radar module technology and solid-state laser technology. It usually includes laser module, receiver module, signal processing module and other parts. In the process of laser emission, solid-state laser generates high-energy, short-pulse laser beam. When the laser beam encounters the target object, part of the reflected light signal will be received by the receiver of the solid-state laser radar module. In the process of laser reception, the receiver converts the received reflected light signal into an electrical signal and amplifies and processes it to obtain the position, shape, speed and other information of the target.

[0003] At present, the conventional solid-state laser radar module assembly method usually includes opening a lens barrel groove on the die-cast front shell that meets the size of the lens, assembling the lens in the lens barrel groove through AA machining technology during assembly, and then fixing the PCB board on the die-cast front shell by dispensing. This assembly method will cause the front shell to be scrapped when the lens assembly is poor, and will also cause the front shell to be scrapped when the PCB focusing is poor, making it difficult to process and easily causing waste of raw materials. Therefore, a solid-state laser radar module that is easy to assemble is proposed to solve the above problems. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a solid-state laser radar module that is easy to assemble. The laser radar module integrates the core components such as the transmitting lens, receiving lens and PCB in a compact module. That is, the integral lens barrel and PCBA board are assembled into a core module before assembly, and only the core module needs to be assembled in the front shell during assembly, and then the rear shell is closed and welded for packaging. This method does not require installing the lens after die casting, which can greatly reduce the assembly difficulty, does not cause waste of die-cast shells, and is easy to replace when a lens is damaged, thereby reducing maintenance costs. This solves the technical problem of the prior art that the front shell is scrapped due to poor lens assembly and poor PCB focusing when the lens is assembled on the die-cast front shell, which has a large processing difficulty and easily causes waste of raw materials.

[0005] The technical solution adopted by the embodiment of the present application to solve its technical problem is:

[0006] A solid-state laser radar module convenient to assemble, comprising a front shell and a rear shell, both of which are made of aluminum material, are connected as a whole, and the front end of the front shell is connected with a lens shell; an integrated lens barrel is inserted in the lens shell and is detachably connected with the front shell through a connecting bolt; wherein, a lens group is pre-set in the integrated lens barrel, and the back of the integrated lens barrel is pressed against a plurality of PIN pins for mounting a PCBA board.

[0007] In a possible implementation, the lens shell and the front shell are provided with a lens barrel groove that is communicated and penetrates through, and the size of the lens barrel groove is consistent with the size of the lens barrel part of the integrated lens barrel, which provides a necessary structural basis for positioning and mounting of the integrated lens barrel, and a glass cover plate is attached to the front end face of the lens shell, which can protect the integrated lens barrel.

[0008] In a possible implementation, a plurality of positioning shafts are fixedly arranged in the front shell, and corresponding positioning holes are arranged on the integrated lens barrel, which can guide and position the integrated lens barrel during mounting, so that the integrated lens barrel can be mounted at a specified position, and in addition, the front shell is provided with mounting holes matched with the connecting bolt, which provides a necessary structural basis for fixed connection between the connecting bolt and the front shell.

[0009] In a possible implementation, the back of the integrated lens barrel is provided with a plurality of mounting bottom holes, the PIN pins are press-connected with the mounting bottom holes, and the two are interference-fitted, which can ensure the stability of the PIN pin installation, so that the PIN pins will not be loose under high and low temperature environments and long-term vibration.

[0010] In a possible implementation, the PCBA board is provided with a connecting hole at each corner, the connecting hole is arranged at a position corresponding to the position of the PIN pin, the PCBA board is fixedly connected with the PIN pin through soldering at the connecting hole, and the combination of the PIN pin and the connecting hole can provide positioning for the installation of the PCBA board, preventing the installation position from deviating and causing mismatch of focal length.

[0011] In a possible implementation, the rear shell is provided with an outwardly protruding annular pad, and the PCBA board is attached with a heat-conducting plate, the back of the heat-conducting plate abuts against the annular pad after the front shell and the rear shell are welded, and the above structure can fix the heat-conducting plate and reserve a heat dissipation space, ensuring that the PCBA board can efficiently exchange heat with the outside.

[0012] In a possible implementation, the heat-conducting plate is composed of a metal plate and a graphene layer, and the graphene layer is located on the front side to be attached to the PCBA board, and the above structure can ensure that the heat-conducting plate has high heat dissipation performance through the attachment of the graphene layer to the PCBA board.

[0013] In a possible implementation, the rear shell back is fixedly provided with a centrally arranged connecting port, and the rear shell back is fixedly provided with radiating teeth on four sides, which can enhance the radiating effect of the rear shell and avoid accumulation of heat inside the radar.

[0014] In a possible implementation, the front shell and the rear shell are integrated by laser welding when assembled.

[0015] In a possible implementation, the front shell and the rear shell are made of 1 series aluminum material.

[0016] In summary, the utility model has the following beneficial technical effects:

[0017] The laser radar module integrates core components such as a transmitting lens, a receiving lens and a PCB in an integrated lens barrel as a standard part, and then performs next assembly, only needs to assemble the standard part in the front shell, then covers the rear shell and welds and packages the front and rear shells, realizes modularization and rapidization during assembly, and realizes partization and detachability during maintenance. Without carefully installing core components such as a lens and a PCB after integrally forming a die-casting part as in the prior art, the assembly difficulty can be greatly reduced, the production efficiency can be improved, the production cost can be reduced, the whole die-casting shell will not be scrapped, only parts need to be replaced when a lens is damaged, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a structure composition schematic view of the utility model;

[0021] Figure 3 It is a local structure schematic view of the utility model;

[0022] Figure 4 It is a rear shell internal structure schematic view of the utility model;

[0023] Figure 5 It is a rear shell back structure schematic view of the utility model;

[0024] Figure 6 It is a lens part structure schematic view of the utility model.

[0025] In the diagram: 1. Front housing; 11. Mounting hole; 12. Positioning shaft; 2. Rear housing; 21. Annular pad; 22. Heat dissipation teeth; 23. Connection port; 3. Lens housing; 31. Lens barrel groove; 32. Glass cover plate; 4. Integrated lens barrel; 41. Positioning hole; 42. Connecting bolt; 43. PIN pin; 5. PCBA board; 51. Connecting hole; 6. Heat conduction plate. Detailed Implementation

[0026] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0027] like Figure 1 - Figure 3 As shown in the figure, this embodiment provides a solid-state lidar module that is easy to assemble, including a front shell 1 and a rear shell 2, which are connected together by laser welding during assembly, and a lens shell 3 is connected to the front end of the front shell 1. It should be noted that, in addition to laser welding, the front shell 1 and the rear shell 2 can also be connected together by a sealing ring and threaded fixing method. However, the sealing ring may be at risk of aging after long-term use, affecting the use of the lens. The laser welding process achieves permanent sealing and provides better acid resistance, water resistance, fog resistance, and dust resistance.

[0028] The easy-to-assemble solid-state lidar module also includes: an integrated lens barrel 4, which is inserted into the lens housing 3 and is detachably connected to the front housing 1 by connecting bolts 42; wherein, the integrated lens barrel 4 has a pre-set lens assembly, and several pins 43 are pressed onto its back for mounting PCBA board 5.

[0029] This lidar module integrates core components such as the transmitting lens, receiving lens, and PCB into a single, unified lens barrel as a standard component. Further assembly is then performed using this standard component. During assembly, only the standard component needs to be installed in the front shell 1, followed by the rear shell 2, and then the front and rear shells are welded together. This achieves modularity and speed in assembly, and modularity and disassembly for maintenance. Unlike existing technologies that require careful installation of lenses, PCBs, and other core components after the die-cast part is integrally formed, this significantly reduces assembly difficulty, improves production efficiency, and lowers production costs. It also avoids the overall scrapping of the die-cast housing; if a lens fails, only the damaged part needs to be replaced, thus reducing maintenance costs.

[0030] In some embodiments, the front shell 1 or the rear shell 2 can be made of 1-series aluminum, 6-series aluminum, or die-cast aluminum; however, it is best if both are made of 1-series aluminum, as the traditional die-casting process is no longer required due to the use of 1-series aluminum. Compared to traditional die-cast aluminum alloys (ADC12), 1-series aluminum has better heat dissipation performance (1-series aluminum can dissipate heat up to 230W or more, while 6-series aluminum and high thermal conductivity die-cast aluminum are around 150W), and combined with external finned heat dissipation teeth, efficient heat dissipation can still be achieved.

[0031] In the above scheme, two integrated lens barrels 4 can be provided, one of which is used to emit laser and the other is used to receive laser. Three integrated lens barrels 4 can also be arranged, as shown in Figure 6 The middle integrated lens barrel 4 is used to emit laser, and the two side integrated lens barrels 4 are used to receive laser.

[0032] As shown in Figure 2 - Figure 3 The lens barrel shell 3 is provided with a through lens barrel groove 31 in the front shell 1, which is matched with the size of the lens barrel part of the integrated lens barrel 4. This structure provides the necessary structure basis for the positioning and installation of the integrated lens barrel 4, and the front end of the lens barrel shell 3 is provided with a glass cover plate 32, which can protect the integrated lens barrel 4.

[0033] As shown in Figure 3 A plurality of positioning shafts 12 are fixedly arranged in the front shell 1, and corresponding positioning holes 41 are arranged on the integrated lens barrel 4. The above structure can guide and position the integrated lens barrel 4 during installation, so that the integrated lens barrel 4 can be installed at a specified position. In addition, the front shell 1 is provided with a mounting hole 11 matched with the connecting bolt 42, which provides the necessary structure basis for the fixed connection between the connecting bolt 42 and the front shell 1. The back of the integrated lens barrel 4 is provided with a plurality of mounting bottom holes, and the PIN pin 43 is press-connected with the mounting bottom hole and the two are in interference fit. This technical scheme can ensure the stability of the PIN pin 43 installation, so that it will not be loose under high and low temperature environment and long-term vibration.

[0034] As shown in Figure 3 The PCBA board 5 is provided with a connecting hole 51 at each corner, which is arranged at a position corresponding to the position of the PIN pin 43. The PCBA board 5 is fixedly connected with the PIN pin 43 at the connecting hole 51 through soldering. The combination of the PIN pin 43 and the connecting hole 51 can provide positioning for the installation of the PCBA board 5, preventing the installation position from deviating and causing mismatch of focal length.

[0035] As shown in Figure 4 - Figure 5 The rear shell 2 is provided with an outwardly protruding annular pad 21, and the PCBA board 5 is provided with a heat-conducting plate 6. After the front shell 1 and the rear shell 2 are welded together, the back of the heat-conducting plate 6 abuts against the annular pad 21. The above structure can fix the heat-conducting plate 6 and at the same time reserve space for heat dissipation, so as to ensure that the PCBA board 5 can efficiently exchange heat with the outside. The rear shell 2 is fixedly provided with a centrally arranged connecting port 23 on the back, and fin-shaped heat dissipation teeth 22 are fixedly arranged on the four edges of the back of the rear shell 2. The heat dissipation teeth 22 can enhance the heat dissipation effect of the rear shell 2 and avoid accumulation of heat inside the radar.

[0036] The heat-conducting plate 6 is formed by bonding a metal plate with a graphene layer, and the graphene layer is located on the front side to be attached to the PCBA plate 5, so that the heat-conducting plate 6 has higher heat dissipation performance through the attachment of the graphene layer to the PCBA plate 5.

[0037] The use principle and use process of the utility model are as follows:

[0038] The laser radar module integrates the core components such as the transmitting lens, the receiving lens and the PCB in a compact module, that is, the integral lens barrel 4 and the PCBA plate 5 are assembled into a core module in advance, and then the core module is assembled in the front shell 1, and then the rear shell 2 is covered and welded and packaged, without the need of installing the lens after the die-casting is integrally formed, which can greatly reduce the assembly difficulty, and also does not cause waste of the die-casting shell, and the lens can be easily replaced after being damaged, thereby reducing the maintenance cost.

[0039] The integral lens barrel 4 is provided with corresponding positioning holes 41, and the structure can guide and position the integral lens barrel 4 during installation, so that the integral lens barrel 4 can be installed at a specified position; in addition, the combination of the PIN pin 43 and the hole 51 can provide positioning for the installation of the PCBA plate 5, so as to prevent the installation position from deviating and causing mismatch of focal length.

[0040] In addition, the rear shell 2 is provided with an annular pad 21 protruding outward, and the PCBA plate 5 is attached to the heat-conducting plate 6, and when the front shell 1 and the rear shell 2 are welded and connected, the back of the heat-conducting plate 6 abuts against the annular pad 21, and the structure can fix the heat-conducting plate 6 and reserve space for heat dissipation, so as to ensure that the PCBA plate 5 can efficiently exchange heat with the outside; the rear shell 2 is fixedly provided with a centrally arranged connection port 23 on the back, and the rear shell 2 is fixedly provided with heat dissipation teeth 22 on the four sides, and the heat dissipation teeth 22 can enhance the heat dissipation effect of the rear shell 2 to avoid accumulation of heat inside the radar.

[0041] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A solid-state lidar module that is easy to assemble, characterized by, Include: Front shell (1) and rear shell (2), both are connected as a whole, and the front shell (1) is connected with the lens shell (3) at the front end; The integrated lens barrel (4) is inserted into the lens shell (3) and is detachably connected with the front shell (1) through the connecting bolt (42); The integrated lens barrel (4) is provided with a lens group, and the back is pressed with a plurality of PIN pins (43), and the back of the integrated lens barrel (4) is provided with a PCBA board (5), and the above two are connected by soldering.

2. The solid-state lidar module of claim 1, wherein: The lens shell (3) and the front shell (1) are provided with a through lens barrel groove (31), and the size of the integrated lens barrel (4) is consistent with the size of the lens barrel part, and the front end of the lens shell (3) is provided with a glass cover plate (32).

3. The solid-state lidar module of claim 1, wherein: The front shell (1) is provided with a plurality of positioning shafts (12), and the integrated lens barrel (4) is provided with corresponding positioning holes (41), and in addition, the front shell (1) is provided with a mounting hole (11) matched with the connecting bolt (42).

4. The solid-state lidar module of claim 1, wherein: The back of the integrated lens barrel (4) is provided with a plurality of mounting bottom holes, and the PIN pin (43) is connected with the mounting bottom hole, and the above two are interference fit.

5. The solid state lidar module of claim 1, wherein: The PCBA board (5) is provided with a hole (51) at the four corners, and the hole (51) is provided with a hole (51) corresponding to the PIN pin (43), and the PCBA board (5) is fixedly connected with the PIN pin (43) through soldering at the hole (51).

6. The solid state lidar module of claim 1, wherein: The rear shell (2) is provided with an annular pad (21) protruding outward, and the PCBA board (5) is provided with a heat conduction plate (6), and when the front shell (1) and the rear shell (2) are connected, the back of the heat conduction plate (6) abuts against the annular pad (21).

7. The solid-state lidar module of claim 6, wherein: The heat conduction plate (6) is composed of a metal plate and a graphene layer, and the graphene layer is located on the front side to be attached to the PCBA board (5).

8. The solid state lidar module of claim 1, wherein: The rear shell (2) is fixedly provided with a centrally arranged connecting port (23) on the back, and the rear shell (2) is fixedly provided with a heat dissipation tooth (22) on the back.

9. The solid state lidar module of claim 1, wherein: The front shell (1) and the rear shell (2) are connected as a whole by laser welding when assembling.

10. The solid state lidar module of claim 1, wherein: The front shell (1) and the rear shell (2) are both made of 1 aluminum material.

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