A controller component for a smart car

Abstract

The present application relates to a controller component of an intelligent car, which relates to the field of automobile control equipment, and includes a housing, a control circuit board, and a wiring port. The wiring port is electrically connected to the control circuit board, and the wiring port is divided into a short interface and a long interface. The housing is provided with a mounting hole for the long interface to pass through, and the housing is provided with a protective cover corresponding to each mounting hole. The protective cover can be sleeved on the periphery of the long interface, and each protective cover is connected to the housing through a mounting structure. Each protective cover is provided with a fastening assembly, and the fastening assembly can tighten and fix the long interface on the protective cover. The present application has the effect of protecting the exposed long interface and improving the firmness of the connection between the long interface and the housing, thereby reducing the possibility of the long interface loosening and improving the reliability of the controller.

Description

Technical Field

[0001] The present application relates to the field of automobile control equipment, and in particular to a controller component of an intelligent automobile. Background Art

[0002] The controllers in the car are an important part of the vehicle's electronic control system. They play a wide range of roles. The controllers mainly include power control, safety system management, infotainment system, body electronic system, etc. In terms of structural composition, the controller mainly includes a shell, a control circuit board and various long interfaces, etc. The control circuit board is installed inside the shell, and the control circuit board is connected to external wires through various long interfaces to enable the controller to control various systems of the vehicle.

[0003] Since the long interface executes different commands, the corresponding connectors on the external wires are also different, so the lengths of the wiring ports are also different, mainly divided into long interfaces and short interfaces. The long interface needs to extend out of the shell, and the part of the long interface extending out of the shell loses the protection of the shell. In daily use, the long interface is easily loosened by collision with foreign objects, resulting in poor contact at the long interface, resulting in poor reliability of the controller. Summary of the invention

[0004] In order to improve the problem that the long interface of the extended shell is easily loosened by collision with foreign objects, resulting in poor contact at the long interface and poor reliability of the controller, the present application provides a controller component for a smart car.

[0005] The controller component of a smart car provided in this application adopts the following technical solution:

[0006] A controller component for an intelligent vehicle comprises a shell, a control circuit board, and a wiring port, wherein the wiring port is electrically connected to the control circuit board, the wiring port is divided into a short interface and a long interface, the shell is provided with a mounting hole for the long interface to pass through, the shell is provided with a protective cover corresponding to each mounting hole one by one, the protective cover can be sleeved on the periphery of the long interface, each of the protective covers is connected to the shell through a mounting structure, and each of the protective covers is provided with a fastening assembly, which can tighten and fix the long interface on the protective cover.

[0007] By adopting the above technical solution, when the controller is assembled, when the control circuit board is installed in the shell, the long interface extends out from the mounting hole, and then the protective cover is put on the long interface and fixedly installed with the shell through the mounting structure, and then the protective cover is fixedly connected to the long interface through the fastening assembly, so that the protective cover can block the impact of foreign objects on the long interface, protect the exposed long interface, and improve the firmness of the connection between the long interface and the shell, thereby reducing the possibility of loosening of the long interface and improving the reliability of the controller.

[0008] Preferably, the mounting hole is a circular hole, and the mounting structure includes an external thread segment and an internal thread segment that can engage with each other, the internal thread segment is arranged on the hole wall of the mounting hole, and the external thread segment is arranged on the outer peripheral side wall of the protective sleeve, and the protective sleeve can be inserted into the mounting hole and formed into a fixed connection with the shell by engaging the internal thread segment with the external thread segment.

[0009] By adopting the above technical solution, the protective cover is inserted into the mounting hole, and the protective cover is screwed, and the installation of the protective cover and the shell is completed through the engagement of the internal thread section and the external thread section, thereby improving the convenience of installing the protective cover and the shell.

[0010] Preferably, a limiting ring is provided on the protective sleeve, and the limiting ring can abut against the shell to limit the protective sleeve from further inserting into the mounting hole.

[0011] By adopting the above technical solution, the installation of the protective sleeve is restricted by the limiting ring, thereby improving the accuracy of the installation length of the protective sleeve.

[0012] Preferably, the fastening assembly includes a clamping piece and a plurality of elastic clamping strips, the protective sleeve is provided with strip holes corresponding to the elastic clamping strips one by one, a plurality of the strip holes are arranged at intervals along the circumference of the protective sleeve, each of the strip holes is arranged along the axial direction of the protective sleeve, each of the elastic clamping strips is located in each of the strip holes, one end of the elastic clamping strip is fixedly connected to the protective sleeve, the clamping piece is arranged on the protective sleeve, and the clamping piece can squeeze each of the elastic clamping strips to bend toward the long interface so that the elastic clamping strip can be pressed against the long interface.

[0013] By adopting the above technical solution, when the protective cover is connected to the long interface, the pressing piece is driven to slide on the protective cover, and the pressing piece squeezes the elastic pressing strip to bend toward the long interface, and finally presses on the long interface. The long interface is squeezed by multiple elastic pressing strips to fix the long interface, thereby improving the firmness of the long interface.

[0014] Preferably, the elastic pressing strip can be blocked by the long interface to generate bending deformation.

[0015] By adopting the above technical solution, since the shape of the long interface is not fixed, the distances between each edge and the inner wall of the protective sleeve are different. At a closer distance, after the elastic compression strip is pressed on the long interface, it relies on its own bending deformation to abut against the long interface, so that the compression piece can continue to slide, and the elastic compression strip at a longer distance is bent and abutted against the long interface, thereby facilitating the elastic compression strip to abut and fix the long interface.

[0016] Preferably, the clamping member includes a clamping ring and a clamping portion, the clamping ring is slidably mounted on the protective sleeve, the clamping portion corresponds to the strip hole one by one and can be inserted into the strip hole, the clamping portion is fixedly arranged on the clamping ring, the clamping portion can slide along the side of the elastic clamping strip away from the long interface so as to squeeze the elastic clamping strip to bend and deform, and the clamping ring can drive the clamping portion to slide from the free end of the elastic clamping strip to the fixed end.

[0017] By adopting the above-mentioned technical solution, when the elastic compression strip is compressed and bent, the compression ring drives multiple compression parts to move in the strip hole at the same time. As the compression part gradually approaches the fixed end of the elastic compression strip, the compression part gradually bends the elastic compression strip toward the long interface, thereby realizing the synchronous extrusion and bending of multiple elastic compression strips, thereby improving the convenience of fixing the elastic compression strip to the long interface.

[0018] Preferably, the threaded sleeve on the protective sleeve is provided with a driving ring, and the driving ring can push the clamping ring to slide along the axial direction of the protective sleeve.

[0019] By adopting the above technical solution, the driving ring is used to drive the clamping ring by utilizing the rotation of the driving ring, and at the same time, the clamping ring is conveniently fixed.

[0020] Preferably, a sealing ring cavity connected to the protective sleeve is provided in the limiting ring, and an elastic sealing pad and an extrusion ring plate are provided in the sealing ring cavity. The extrusion ring plate is located on one side of the elastic sealing pad, and a pressure rod is provided on the extrusion ring plate. The pressure rod passes through the limiting ring, and the fastening assembly can squeeze the pressure rod so that the extrusion ring plate can squeeze the elastic sealing pad to deform, and the elastic sealing pad can seal the protective sleeve and the long interface through its own deformation.

[0021] By adopting the above technical solution, as the clamping ring moves, the clamping ring simultaneously drives the extrusion ring plate to squeeze the elastic sealing gasket to deform through the pressure rod. When the clamping ring drives the elastic clamping strip to fix the long interface, the deformation of the elastic sealing gasket driven by the clamping ring reaches the maximum, and the elastic sealing gasket seals the protective cover and the connection port, thereby improving the overall waterproof sealing effect of the controller.

[0022] Preferably, the shell includes a substrate, a front cover, a rear cover and a top cover, the control circuit board is mounted on the substrate, the front cover, the rear cover and the top cover are all mounted on the substrate, and the mounting hole is opened on the rear cover.

[0023] By adopting the above technical solution, the shell is spliced ​​together by the base plate, the front cover plate, the rear cover plate and the top cover plate, thereby improving the convenience of assembling the shell.

[0024] Preferably, heat dissipation holes are provided at the bottom of the substrate.

[0025] By adopting the above technical solution and utilizing the heat dissipation holes, the heat dissipation of the control circuit board in the housing is accelerated.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When assembling the controller, when the control circuit board is installed in the shell, the longer long interface extends out from the installation hole, and then the protective cover is set on the long interface and fixedly installed with the shell through the installation structure, and then the protective cover is fixedly connected with the long interface through the fastening assembly, so that the protective cover can prevent the impact of foreign objects on the long interface, protect the exposed long interface, and improve the firmness of the connection between the long interface and the shell, thereby reducing the possibility of loosening of the long interface and improving the reliability of the controller;

[0028] 2. After the elastic pressing strip is pressed against the long interface, it abuts against the long interface by its own bending deformation, so that the pressing piece can continue to slide, and the elastic pressing strip at a longer distance is bent and abutted against the long interface, thereby facilitating the elastic pressing strip to abut and fix the long interface;

[0029] 3. When the clamping ring drives the elastic clamping strip to fix the long interface, the deformation of the elastic sealing gasket driven by the clamping ring reaches the maximum, and the elastic sealing gasket seals the protective cover and the connection port, thereby improving the overall waterproof sealing effect of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a controller component of a smart car according to an embodiment of the present application.

[0031] Figure 2 It is an exploded view used to show the composition of the shell.

[0032] Figure 3 It is an exploded view used to show the installation structure.

[0033] Figure 4 is a top view of the controller assembly.

[0034] Figure 5 is along Figure 4 Section view along line AA.

[0035] Description of reference numerals: 1. Housing; 11. Substrate; 12. Front cover plate; 13. Rear cover plate; 131. Mounting hole; 132. Connecting hole; 14. Top cover plate; 15. Heat dissipation hole; 2. Control circuit board; 3. Wiring port; 31. Short interface; 32. Long interface; 4. Protective sleeve; 5. Mounting structure; 51. External thread section; 52. Internal thread section; 53. Limiting ring; 531. Sealing ring cavity; 532. Elastic sealing gasket; 533. Extrusion ring plate; 534. Pressing rod; 6. Fastening assembly; 61. Pressing member; 611. Pressing ring; 612. Pressing part; 62. Elastic pressing strip; 63. Strip-shaped hole; 7. Driving ring. Detailed implementation manners

[0036] The following further describes the present application in detail with reference to the Figure 1-5 accompanying drawings.

[0037] An embodiment of the present application discloses a controller assembly for an intelligent vehicle.

[0038] Referring to Figure 1 and Figure 2 , a controller assembly for an intelligent vehicle includes a housing 1, a control circuit board 2, and a wiring port 3. The wiring port 3 is electrically connected to the control circuit board 2. In this embodiment, the housing 1 includes a substrate 11, a front cover plate 12, a rear cover plate 13, and a top cover plate 14. The substrate 11 is in a U-shaped structure and is formed by stamping a single piece of sheet metal. The control circuit board 2 is installed on the substrate 11 by screws. The front cover plate 12, the rear cover plate 13, and the top cover plate 14 are respectively installed at various positions on the substrate 11, so that the housing 1 presents a square box structure. Each wiring port 3 is fixedly installed on the control circuit board 2 and is respectively electrically connected to the corresponding circuit on the control circuit board 2. The wiring port 3 is divided into a short interface 31 and a long interface 32. A heat dissipation hole 15 is provided at the bottom of the substrate 11, and the heat generated by the control circuit board 2 can be dissipated through the heat dissipation hole 15 to avoid the accumulation of heat inside the controller.

[0039] Referring to Figure 2 and Figure 3 , mounting holes 131 and connecting holes 132 are provided on the rear cover plate 13. The connecting holes 132 correspond to the short interfaces 31 one by one and can be opposite to the short interfaces 31. The mounting holes 131 correspond to the long interfaces 32 one by one. In this embodiment, the mounting holes 131 are round holes, and the long interfaces 32 can pass through the mounting holes 131. Protective sleeves 4 corresponding to each mounting hole 131 are provided on the rear cover plate 13. The protective sleeves 4 can be sleeved around the long interfaces 32. Each protective sleeve 4 is connected to the rear cover plate 13 through a mounting structure 5, and a fastening assembly 6 is provided on each protective sleeve 4. The fastening assembly 6 can tighten and fix the long interfaces 32 on the protective sleeves 4.

[0040] When assembling the controller, the control circuit board 2 is installed on the substrate 11, and then the rear cover 13, the front cover 12, and the top cover 14 are installed on the substrate 11, so as to improve the convenience of assembling the housing 1. The long interface 32 extends from the mounting hole 131, and then the protective cover 4 is sleeved on the long interface 32 and fixedly installed with the housing 1 through the mounting structure 5, and then the protective cover 4 is fixedly connected with the long interface 32 through the fastening assembly 6, so that the protective cover 4 can prevent the impact of foreign objects on the long interface 32, protect the exposed long interface 32, and improve the firmness of the connection between the long interface 32 and the housing 1, thereby reducing the possibility of loosening of the long interface 32 and improving the reliability of the controller.

[0041] Reference Figure 3 The mounting structure 5 in this embodiment includes an external thread segment 51 and an internal thread segment 52 that mesh with each other. The internal thread segment 52 is arranged on the hole wall of the mounting hole 131, and the external thread segment 51 is arranged on the outer peripheral side wall of the protective sleeve 4. A limiting ring 53 is arranged on the outer peripheral side wall of the protective sleeve 4, and the limiting ring 53 is integrally formed with the protective sleeve 4. When the protective sleeve 4 is screwed onto the rear cover plate 13, the installation length of the protective sleeve 4 is limited by the abutment between the limiting ring 53 and the rear cover plate 13, thereby improving the accuracy of the installation of the protective sleeve 4. When installing the protective sleeve 4, the protective sleeve 4 is inserted into the mounting hole 131, and the internal thread segment 52 is meshed with the external thread segment 51 to form a fixed connection with the shell 1. The installation of the protective sleeve 4 and the shell 1 is completed by the meshing of the internal thread segment 52 and the external thread segment 51, thereby improving the convenience of installing the protective sleeve 4 and the shell 1.

[0042] Reference Figure 4 , Figure 5 The fastening assembly 6 in this embodiment includes a clamping member 61 and a plurality of elastic clamping strips 62. In this embodiment, four elastic clamping strips 62 are taken as an example. The protective sleeve 4 is provided with strip holes 63 corresponding to the elastic clamping strips 62. The four strip holes 63 are arranged opposite to each other in pairs along the circumference of the protective sleeve 4. Each strip hole 63 is arranged along the axial direction of the protective sleeve 4. Each elastic clamping strip 62 is located in each strip hole 63. One end of the elastic clamping strip 62 close to the rear cover plate 13 is fixedly connected to the protective sleeve 4. The elastic clamping strip 62 in this embodiment is made of elastic metal material, so that the elastic clamping strip 62 can be elastically bent and deformed while being able to squeeze and fix the long interface 32. One end of the elastic clamping strip 62 close to the rear cover plate 13 is a free end.

[0043] Reference Figure 4 , Figure 5The clamping member 61 in this embodiment includes a clamping ring 611 and a clamping portion 612. The clamping ring 611 is slidably sleeved on the protective sleeve 4. The clamping portion 612 corresponds to the strip hole 63 one by one. The clamping portion 612 is integrally formed with the elastic clamping strip 62. When the elastic clamping strip 62 is inserted into the strip hole 63, the clamping portion 612 is located on the side of the elastic clamping strip 62 away from the long interface 32, and squeezes the elastic clamping strip 62 to bend toward the long interface 32. When the clamping portion 612 slides along the elastic clamping strip 62 toward the rear cover 13, the degree of deformation of the elastic clamping strip 62 squeezing the elastic clamping strip 62 to bend continues to increase.

[0044] Reference Figure 4 , Figure 5 Since the shape of the long interface 32 is irregular, the spacing between each side of the long interface 32 and the corresponding elastic pressing strip 62 is different. Therefore, the end of the elastic pressing strip 62 at a shorter distance abuts against the long interface 32, and then as the pressing part 612 continues to slide, the end of the elastic pressing part 612 bends and always abuts against the long interface 32, so that the pressing ring 611 can continue to slide along the protective cover 4, so that the pressing part 612 abuts the end of the elastic pressing strip 62 at a longer distance against the side wall of the long interface 32. It can effectively avoid that the pressing part 612 cannot press the elastic pressing strip 62 against the long interface 32, thereby improving the convenience and flexibility of the protective cover 4 to fix the long interface 32.

[0045] When the elastic compression strip 62 is compressed and deformed, the compression ring 611 drives the multiple compression parts 612 to move in the strip hole 63 at the same time. As the compression part 612 gradually approaches the fixed end of the elastic compression strip 62, the compression part 612 gradually bends the elastic compression strip 62 toward the long interface 32 and is tightly fixed on the long interface 32. The long interface 32 is squeezed by the multiple elastic compression strips 62 to fix the long interface 32, thereby improving the firmness of the long interface 32. The compression ring 611 drives the multiple compression parts 612 to move simultaneously, realizing the synchronous squeezing and bending of the multiple elastic compression strips 62, thereby improving the convenience of fixing the elastic compression strip 62 to the long interface 32.

[0046] Reference Figure 4 , Figure 5 A driving ring 7 is threadedly sleeved on each protective sleeve 4. The driving ring 7 is rotated to slide toward the rear cover plate 13. The driving ring 7 pushes the clamping ring 611 to slide along the axial direction of the protective sleeve 4, so that the driving ring 7 drives the clamping ring 611 and facilitates the convenience of fixing the clamping ring 611.

[0047] Reference Figure 4 , Figure 5A sealing ring cavity 531 connected to the protective sleeve 4 is opened in the limiting ring 53, and an elastic sealing pad 532 and an extrusion ring plate 533 are provided in the sealing ring cavity 531 of the limiting ring 53. The elastic sealing pad 532 is made of rubber material, and the extrusion ring plate 533 is located on the side of the elastic sealing pad 532 away from the rear cover plate 13. Two pressure rods 534 arranged along the axial direction of the protective sleeve 4 are fixedly provided on the extrusion ring plate 533, each pressure rod 534 passes through the limiting ring 53, and one end of the pressure rod 534 extending out of the limiting ring 53 is opposite to the clamping ring 611. When the clamping ring 611 drives the clamping part 612 to squeeze the elastic clamping strip 62 to bend and deform, the clamping ring 611 drives the extrusion ring plate 533 to move through the pressure rod 534, and the extrusion ring plate 533 squeezes the elastic sealing pad 532 to generate deformation, and the elastic sealing pad 532 seals the gap between the protective sleeve 4 and the long interface 32 through its own deformation.

[0048] As the clamping ring 611 moves, the clamping ring 611 simultaneously drives the extrusion ring plate 533 to squeeze the elastic sealing pad 532 through the pressure rod 534 to deform. When the clamping ring 611 drives the elastic clamping strip 62 to fix the long interface 32, the deformation of the elastic sealing pad 532 driven by the clamping ring 611 reaches the maximum. The elastic sealing pad 532 seals the protective cover 4 and the connection port, thereby improving the overall waterproof sealing effect of the controller.

[0049] The implementation principle of a controller assembly of a smart car in an embodiment of the present application is: when assembling the controller, the control circuit board 2 is installed on the substrate 11, and then the rear cover plate 13, the front cover plate 12, and the top cover plate 14 are installed on the substrate 11, so as to improve the convenience of assembling the shell 1. The long interface 32 extends out from the mounting hole 131, and then the protective cover 4 is sleeved on the long interface 32. The operator rotates the drive ring 7, and the drive ring 7 drives the clamping ring 611 to drive multiple clamping parts 612 to move in the strip hole 63 at the same time. As the clamping part 612 gradually approaches the fixed end of the elastic clamping strip 62, the clamping part 612 gradually bends the elastic clamping strip 62 toward the long interface 32 and fixes it on the long interface 32. The long interface 32 is squeezed by multiple elastic clamping strips 62 to fix the long interface 32, and then the protective cover 4 is fixedly connected to the long interface 32 through the elastic clamping strip 62, so that the protective cover 4 can block the impact of foreign objects on the long interface 32, protect the exposed long interface 32, and improve the firmness of the connection between the long interface 32 and the shell 1, thereby reducing the possibility of loosening of the long interface 32 and improving the reliability of the controller.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A controller component for a smart car, comprising a housing (1), a control circuit board (2), and a wiring port (3), wherein the wiring port (3) is electrically connected to the control circuit board (2), and the wiring port (3) is divided into a short interface (31) and a long interface (32), characterized in that: The shell (1) is provided with a mounting hole (131) for the long interface (32) to pass through, and the shell (1) is provided with a protective cover (4) corresponding to each mounting hole (131) one by one, and the protective cover (4) can be sleeved on the periphery of the long interface (32), and each protective cover (4) is connected to the shell (1) through a mounting structure (5), and each protective cover (4) is provided with a fastening component (6), and the fastening component (6) can tighten and fix the long interface (32) on the protective cover (4); The fastening assembly (6) includes a clamping member (61) and a plurality of elastic clamping strips (62); the protective sleeve (4) is provided with strip holes (63) corresponding to the elastic clamping strips (62) one by one; the plurality of strip holes (63) are arranged at intervals along the circumference of the protective sleeve (4); each of the strip holes (63) is arranged along the axial direction of the protective sleeve (4); each of the elastic clamping strips (62) is located in each of the strip holes (63); one end of the elastic clamping strip (62) is fixedly connected to the protective sleeve (4); the clamping member (61) is arranged on the protective sleeve (4); the clamping member (61) can squeeze each of the elastic clamping strips (62) to bend toward the long interface (32) so that the elastic clamping strip (62) can be pressed against the long interface (32); The elastic pressing strip (62) can be blocked by the long interface (32) and produce bending deformation; The clamping member (61) includes a clamping ring (611) and a clamping portion (612). The clamping ring (611) is slidably mounted on the protective sleeve (4). The clamping portion (612) corresponds to the strip hole (63) one by one and can be inserted into the strip hole (63). The clamping portion (612) is fixedly arranged on the clamping ring (611). The clamping portion (612) can slide along the side of the elastic clamping strip (62) away from the long interface (32) so as to squeeze the elastic clamping strip (62) to bend and deform. The clamping ring (611) can drive the clamping portion (612) to slide from the free end of the elastic clamping strip (62) to the fixed end.

2. The controller assembly of a smart car according to claim 1, characterized in that: The mounting hole (131) is a circular hole. The mounting structure (5) comprises an external thread section (51) and an internal thread section (52) that can mesh with each other. The internal thread section (52) is arranged on the hole wall of the mounting hole (131). The external thread section (51) is arranged on the outer peripheral side wall of the protective sleeve (4). The protective sleeve (4) can be inserted into the mounting hole (131) and is fixedly connected to the housing (1) by meshing the internal thread section (52) with the external thread section (51).

3. The controller assembly of the smart car according to claim 2, characterized in that: The protective sleeve (4) is provided with a limiting ring (53), and the limiting ring (53) can abut against the shell (1) to limit the protective sleeve (4) from further inserting into the mounting hole (131).

4. The controller assembly of a smart car according to claim 1, characterized in that: The threaded sleeve on the protective sleeve (4) is provided with a driving ring (7), and the driving ring (7) can push the clamping ring (611) to slide along the axial direction of the protective sleeve (4).

5. The controller assembly of the smart car according to claim 3, characterized in that: The limiting ring (53) is provided with a sealing ring cavity (531) which is in communication with the protective sleeve (4). The limiting ring (53) is provided with an elastic sealing pad (532) and an extrusion ring plate (533) in the sealing ring cavity (531). The extrusion ring plate (533) is located on one side of the elastic sealing pad (532). A pressure rod (534) is provided on the extrusion ring plate (533). The pressure rod (534) passes through the limiting ring (53). The fastening assembly (6) can squeeze the pressure rod (534) so ​​that the extrusion ring plate (533) can squeeze the elastic sealing pad (532) to deform. The elastic sealing pad (532) can seal the protective sleeve (4) and the long interface (32) through its own deformation.

6. The controller assembly of a smart car according to claim 1, characterized in that: The shell (1) comprises a base plate (11), a front cover plate (12), a rear cover plate (13) and a top cover plate (14); the control circuit board (2) is mounted on the base plate (11); the front cover plate (12), the rear cover plate (13) and the top cover plate (14) are all mounted on the base plate (11); and the mounting hole (131) is provided on the rear cover plate (13).

7. The controller assembly of the smart car according to claim 6, characterized in that: The bottom of the substrate (11) is provided with a heat dissipation hole (15).

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