Anti-separation and anti-misloading electronic control unit

Abstract

The utility model discloses an anti-separation and anti-misloading electronic control unit, which comprises a surface shell, a PCB (printed circuit board) and a bottom shell which are sequentially arranged from top to bottom, the bottom shell is internally provided with an annular groove for inserting the bottom of the surface shell, sealant is dispensed in the annular groove, the bottom surface of the surface shell is provided with a knurling structure for increasing the adhesive bonding area, and the knurling structure is provided with a groove. The outer side of the face shell is horizontally provided with a limiting protrusion, the outer side of the annular groove is provided with a positioning notch for the limiting protrusion to be pressed down and placed in, when the face shell provided with the PCB is pressed on the bottom shell from top to bottom, the bottom of the face shell is inserted into the annular groove, the limiting protrusion is synchronously placed in the positioning notch, and a worker can effectively judge the position of the face shell through the limiting protrusion. Especially, when the outer shell is in a square shape, it is effectively avoided that workers mistakenly and reversely install and repeatedly operate, accurate press-fitting is achieved, and the press-fitting device has the advantages that the adhesion degree of the face shell and the bottom shell is high, the conception is ingenious, the structures are linked, and accurate press-fitting is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic control units, and in particular relates to an electronic control unit capable of preventing separation and mis-installation. Background Art

[0002] The design and assembly of the structural parts of the motor controller is one of the important indicators related to the sealing performance of the product, and is also an important indicator for customers to purchase. At present, the fastening of the face shell and the bottom shell is completely fastened by glue, but because the bottom of the face shell is directly in contact with the horizontal panel of the bottom shell, and the contact surface is horizontal and smooth, it can only be fixed and limited by glue. After a long time of use, the face shell and the bottom shell are easily separated, resulting in the product cannot be used normally. When the outer shell adopts a square structure, it is easy to distinguish between the front, back, left and right, so it is easy for the face shell to be misaligned when the face shell and the bottom shell are press-fitted, resulting in press-fitting failure. Utility Model Content

[0003] The utility model aims to provide an electronic control unit that is anti-separation and anti-misinstallation, with an outer shell tightly installed and accurate installation orientation, to solve the problems of poor bonding stability caused by smooth contact surfaces between the existing front shell and the bottom shell, and press-fit failure caused by inaccurate positioning of the square shell.

[0004] To this end, the technical solution adopted by the utility model is: an electronic control unit that prevents separation and misinstallation, comprising a face shell, a PCB board, and a bottom shell arranged in sequence from top to bottom, the bottom shell being provided with an annular groove for inserting the bottom of the face shell, the annular groove being dotted with sealant, the bottom surface of the face shell being provided with a knurled structure for increasing the adhesive bonding area, a limiting protrusion being horizontally provided on the outer side of the face shell, a positioning notch being provided on the outer side of the annular groove for the limiting protrusion to be pressed down and inserted, when the face shell with the PCB board installed is pressed down onto the bottom shell from top to bottom, the bottom of the face shell is inserted into the annular groove, and the limiting protrusion is synchronously inserted into the positioning notch.

[0005] As a preferred embodiment of the above scheme, two limiting protrusions are used, and they are asymmetrically located on the outer edge of the face shell. The asymmetric structure can effectively prevent the face shell from being installed upside down. The employees on the production line can intuitively judge the installation direction of the upper shell based on the limiting protrusions of the face shell, avoiding repeated operations and unnecessary damage to the PCB board. The design concept is reasonable.

[0006] Further preferably, the bottom shell is provided with mounting supports extending outwardly symmetrically, and the mounting supports are provided with mounting holes, and the structural design is reasonable, so that the installed electronic control unit can be easily installed on the device.

[0007] Further preferably, the PCB board is installed in the face shell by welding, the welding is firm, and the face shell has an overall square structure with a reasonable shape.

[0008] More preferably, the sealant is a paste-like glue, which is convenient for extrusion and diffusion to increase the bonding contact surface, thereby ensuring the sealing effect.

[0009] Further preferably, the limiting protrusion is flush with the bottom surface of the face shell and is provided with a knurled structure, the bottom surface of the positioning notch is flush with the bottom of the annular groove, and the thickness of the limiting protrusion is smaller than the height of the positioning notch, thereby ensuring that the limiting protrusion will not be exposed after being inserted into the positioning notch, thereby ensuring the aesthetic appearance.

[0010] More preferably, the surface roughness of the annular groove is 6.3-25, which ensures that the sealing glue has a large bonding contact surface and high bonding firmness.

[0011] Beneficial effects of the utility model:

[0012] (1) Compared with the smooth contact surface between the top shell and the bottom shell, this solution adopts an annular groove set in the bottom shell for the bottom of the top shell to be inserted, and a knurled structure is also set on the bottom surface of the top shell. The annular groove realizes preliminary limiting, and sealant is dotted in the annular groove to effectively ensure the contact between the sealant and the knurled structure. In addition, since the knurled structure can increase the bonding surface, the adhesion between the top shell and the bottom shell is strong. The design is ingenious and the structure is closely linked.

[0013] (2) A limit protrusion is horizontally arranged on the outer side of the face shell, and a positioning notch is arranged on the outer side of the annular groove for the limit protrusion to be pressed down and placed. Since the face shell with the PCB board is pressed down and installed on the bottom shell, the staff can effectively judge the position of the face shell through the limit protrusion, especially when the outer shell is square in shape, which effectively avoids the staff from misjudging the installation and repeating the operation, resulting in unnecessary damage to the PCB board, and realizes accurate press installation.

[0014] In summary, it has the advantages of strong adhesion between the surface shell and the bottom shell, ingenious design, interlocking structure, and precise pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the parts explosion of the utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the bottom shell.

[0018] Figure 4 Schematic diagram of the structure of the face shell. DETAILED DESCRIPTION

[0019] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0020] Combination Figure 1 — Figure 4 As shown, an anti-separation and anti-misinstallation electronic control unit is composed of a surface shell 1, a PCB board 2, and a bottom shell 3 arranged in sequence from top to bottom.

[0021] The surface shell 1 is in a square structure as a whole.

[0022] The PCB board 2 is preferably installed in the housing 1 by welding.

[0023] An annular groove 31 is provided in the bottom shell 3 for the bottom of the surface shell 1 to be inserted.

[0024] The inner surface roughness of the annular groove 31 is 6.3-25.

[0025] The bottom surface of the cover 1 is provided with a knurled structure 11 for increasing the adhesive bonding area.

[0026] A limiting protrusion 12 is horizontally provided on the outer side of the surface shell 1 .

[0027] Preferably, two limiting protrusions 12 are used and are asymmetrically located on the outer edge of the face shell 1 .

[0028] A sealant 311 is dotted inside the annular groove 31 .

[0029] A positioning notch 32 is provided on the outer side of the annular groove 31 for the limiting protrusion 12 to be pressed down and inserted.

[0030] Since the front shell with the PCB board is pressed down and installed on the bottom shell, the staff can effectively judge the position of the front shell through the limiting protrusions, especially when the outer shell is square in shape, which effectively avoids the staff from misjudging the installation and repeating the operation.

[0031] The limiting protrusion 12 is flush with the bottom surface of the face shell 1 and is provided with a knurling structure. The bottom surface of the positioning notch 32 is flush with the bottom of the annular groove 31 . The thickness of the limiting protrusion 12 is less than the height of the positioning notch 32 .

[0032] The bottom shell 3 is symmetrically provided with mounting brackets 33 extending outward.

[0033] The mounting support 33 is provided with a mounting hole.

[0034] The sealant 311 is preferably in the form of paste glue.

[0035] When the front shell 1 with the PCB board 2 installed is pressed downward onto the bottom shell 3 , the bottom of the front shell 1 is inserted into the annular groove 31 , and the limiting protrusion 12 is simultaneously placed into the positioning notch 32 .

[0036] First, weld the PCB board 2 and the face shell 1 together, apply sealant 311 in the annular groove 31, and press the PCB board 2 and the face shell 1 onto the bottom shell 3 with the sealant 311 according to the limiting protrusions 12 and the positioning notches 32 of the face shell 1 and the bottom shell 3.

[0037] The following measures are adopted: a knurled structure 11 is provided at the bonding place of the face shell 1 to increase the bonding area of ​​the sealant 311 to ensure that the face shell 1 and the bottom shell 3 are securely fastened; the surface roughness is increased on the annular groove 31 of the bottom shell 3 to ensure that the face shell 1 and the bottom shell 3 are securely fastened; limiting protrusions 12 and positioning notches 32 are added to the face shell 1 and the bottom shell 3 to ensure that the shells are installed correctly in the correct direction.

Claims

1. An anti-separation and anti-misinstallation electronic control unit, characterized in that: The invention comprises a face shell (1), a PCB board (2), and a bottom shell (3) which are arranged in sequence from top to bottom. The bottom shell (3) is provided with an annular groove (31) for inserting the bottom of the face shell (1). A sealant (311) is dotted in the annular groove (31). The bottom surface of the face shell (1) is provided with a knurled structure (11) for increasing the adhesive bonding area. A limiting protrusion (12) is horizontally provided on the outer side of the face shell (1). A positioning notch (32) is provided on the outer side of the annular groove (31) for the limiting protrusion (12) to be pressed down and inserted. When the face shell (1) with the PCB board (2) installed is pressed from top to bottom onto the bottom shell (3), the bottom of the face shell (1) is inserted into the annular groove (31) and the limiting protrusion (12) is synchronously inserted into the positioning notch (32).

2. The anti-separation and anti-misinstallation electronic control unit according to claim 1, characterized in that: The limiting protrusions (12) are two in number and are asymmetrically located on the outer edge of the face shell (1).

3. The anti-separation and anti-mis-installation electronic control unit according to claim 1, characterized in that: The bottom shell (3) is symmetrically provided with a mounting support (33) extending outward, and the mounting support (33) is provided with a mounting hole.

4. The anti-separation and anti-mis-assembly electronic control unit according to claim 1, characterized in that: The PCB board (2) is installed in the face shell (1) by welding, and the face shell (1) is an overall square structure.

5. The anti-separation and anti-mis-installation electronic control unit according to claim 1, characterized in that: The sealant (311) is a paste-like glue.

6. The anti-separation and anti-mis-assembly electronic control unit according to claim 1, characterized in that: The limiting protrusion (12) is flush with the bottom surface of the face shell (1) and is provided with a knurling structure (11); the bottom surface of the positioning notch (32) is flush with the bottom of the annular groove (31); and the thickness of the limiting protrusion (12) is less than the height of the positioning notch (32).

7. The anti-separation and anti-mis-installation electronic control unit according to claim 6, characterized in that: The surface roughness of the annular groove (31) is 6.3-25.

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