Sealing structure of motor controller

Abstract

The utility model discloses a motor controller sealing structure which comprises a bottom shell, a sealing gasket, a finished product circuit board and a face shell which are sequentially arranged from bottom to top, an inner groove of the face shell is matched with the outline of a plug-in of the finished product circuit board, and the periphery of the plug-in of the face shell corresponding to the left side, the right side and the rear side of the finished product circuit board is provided with annular glue grooves. The annular glue groove is dispensed with sealing glue along the trend of the groove body, the surface shell and the bottom shell are fastened and connected through screws arranged circumferentially, so that the sealing glue is extruded and diffused to tightly bond the local contact surface of the finished circuit board and the surface shell, the positioning dispensing of the sealing glue is conveniently realized through the annular glue groove, and the peripheral dispensing of the corresponding plug-in is realized. The device can fully guarantee the sealing of the periphery of the installed plug-in, effectively prevents the important plug-in from entering water to cause the damage of the controller, and has the advantages of low manufacturing cost, good sealing effect, novel design thought, ingenious structural design and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor controllers, and in particular relates to a sealing structure of a motor controller. Background Art

[0002] The design and assembly of the motor controller's structural parts are one of the important indicators related to the product's sealing performance, and are also an important indicator for customers to purchase. The current motor controller uses multiple sealing pads and press-fit structures for sealing. However, since the sealing pads are all made of soft silicone pads, it is impossible to ensure that any of the sealing pads are compressed in place when pressing up and down. The sealing performance of the controller is poor, and there is a possibility of water leakage and damage to the controller. Utility Model Content

[0003] The utility model aims to provide a motor controller sealing structure with strong sealing performance, tight press-fitting and high space utilization, and solves the problem that the existing sealing structure uses multiple sealing pads and press-fitting structures for sealing, resulting in the inability to ensure that any sealing pad is compressed into place during upper and lower press-fitting.

[0004] To this end, the technical solution adopted by the utility model is: a motor controller sealing structure, including a bottom shell, a sealing gasket, a finished circuit board, and a face shell arranged in sequence from bottom to top, the inner groove of the face shell matches the plug-in contour of the finished circuit board, the face shell is provided with annular glue grooves on the periphery of the plug-in corresponding to the left and right rear three sides of the finished circuit board, the annular glue grooves are dotted with sealing glue along the groove body, the face shell and the bottom shell are fastened together by screws arranged circumferentially, so that the sealing glue is squeezed and diffused to tightly bond the local contact surfaces of the finished circuit board and the face shell.

[0005] As a preferred embodiment of the above scheme, the finished circuit board is provided with positive and negative plug-ins, three-item plug-ins and pin headers. The finished circuit board is respectively provided with mounting brackets for installing the positive and negative plug-ins and the three-item plug-ins on the left and right sides. The finished circuit board is provided with a mounting plate for installing the pin header at the rear middle part. The surface shell is provided with placement grooves corresponding to the positive and negative plug-ins, the three-item plug-ins and the pin header, and the outer end surfaces of the placement grooves can be fitted up and down with the corresponding mounting brackets and the top plate of the mounting plate. Only by fitting tightly up and down can the adhesion effect of the sealing glue be guaranteed to the greatest extent, and the structural design is reasonable.

[0006] Further preferably, the annular glue groove is located on the top surface of the mounting groove platform, and the directions of the annular glue groove body respectively correspond to the periphery of the positive and negative plug-ins, the three-item plug-ins, and the pin header. The design is reasonable, and the periphery of important plug-ins is circumferentially bonded to ensure the sealing effect, which effectively prevents water from entering important plug-ins and causing damage to the controller.

[0007] Further preferably, the mounting bracket is in a "T"-shaped structure as a whole, and the outer edge of the top flat plate does not exceed the edge of the finished circuit board. The "T"-shaped structure effectively utilizes the installation space of the finished circuit board and facilitates the installation of other components. The design is ingenious. When the finished circuit board is docked with the surface shell, the top plate of the mounting bracket will not collide with the edge of the finished circuit board.

[0008] More preferably, the sealing glue is a paste-like glue, which can be easily squeezed and spread to increase the bonding contact surface, thereby ensuring the sealing effect.

[0009] More preferably, the sealing pad is a soft silicone pad, which has low manufacturing cost.

[0010] Beneficial effects of the utility model:

[0011] (1) Compared with the use of multiple sealing gaskets and press-fit structures for sealing, this solution only uses one sealing gasket between the bottom shell and the finished circuit board, and then uses sealing glue to bond the surface shell and the finished circuit board, effectively avoiding the situation where no sealing gasket can be compressed into place during the upper and lower press-fitting. By replacing the sealing gasket with sealing glue, the cost is low and the installation is convenient. Since the sealing glue is squeezed and spread, it can effectively increase the bonding contact area and achieve a good sealing effect.

[0012] (2) An annular glue groove is set on the periphery of the plug-in on the left and right rear three sides of the finished circuit board corresponding to the face shell, and sealing glue is applied along the groove body. The annular glue groove facilitates the positioning and application of sealing glue, and the application of sealing glue on the periphery of the plug-in can fully ensure that the installed plug-in is sealed, effectively preventing water from entering important plug-ins and causing damage to the controller. The design concept is novel and the structural design is ingenious.

[0013] To sum up, it has the advantages of low cost, good sealing effect, novel design idea, ingenious structural design, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the parts explosion of the utility model.

[0015] Figure 2 Schematic diagram of the structure of the face shell.

[0016] Figure 3 This is a schematic diagram of the structure of the finished circuit board. DETAILED DESCRIPTION

[0017] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0018] Combination Figure 1 — Figure 3 As shown, a sealing structure of a motor controller is composed of a bottom shell 1, a sealing gasket 2, a finished circuit board 3, and a surface shell 4 which are arranged in sequence from bottom to top.

[0019] The sealing pad 2 is preferably a soft silicone pad.

[0020] The finished circuit board 3 is provided with positive and negative plug-ins 31 , three-way plug-ins 32 , and pin headers 33 .

[0021] The finished circuit board 3 is provided with mounting brackets 34 on the left and right sides for mounting the positive and negative plug-ins 31 and the three-way plug-ins 32 .

[0022] A mounting plate 35 for mounting the pin header 33 is provided at the rear middle of the finished circuit board 3 .

[0023] The mounting bracket 34 is in a “T”-shaped structure as a whole, and the outer edge of the top plate does not exceed the edge of the finished circuit board 3 .

[0024] The inner groove of the cover 4 matches the plug-in profile of the finished circuit board 3 .

[0025] The outer periphery of the plug-in on the left and right rear three sides of the surface shell 4 corresponding to the finished circuit board 3 is provided with an annular glue groove 41.

[0026] Sealing glue 411 is applied to spots along the annular glue groove 41 .

[0027] The sealing glue 411 is preferably a paste glue.

[0028] The front shell 4 and the bottom shell 1 are fastened together by screws arranged around the periphery, so that the sealing glue 411 is squeezed and spread to tightly adhere to the local contact surface of the finished circuit board 3 and the front shell 4.

[0029] The face shell 4 is provided with placement grooves corresponding to the positive and negative plug-ins 31 , the three-way plug-ins 32 , and the pin header 33 , and the outer end surfaces of the placement grooves can fit up and down with the top plates of the corresponding mounting brackets 34 and mounting flat plates 35 .

[0030] The annular rubber groove 41 is located on the top surface of the mounting slot platform, and the groove direction of the annular rubber groove 41 corresponds to the periphery of the positive and negative plug-ins 31 , the three-way plug-in 32 , and the pin header 33 .

[0031] First, the sealing glue 411 is dotted on the annular glue groove 41, and then the finished circuit board 3, the sealing gasket 2, and the bottom shell 1 are installed in sequence, and then the surface shell 4 and the bottom shell 1 are assembled by screws.

[0032] The tightening pressure brought by the screw assembly is used to squeeze the sealing glue 411 into the gap between the finished circuit board 3 and the surface shell 4, which can bond a large area, thereby effectively ensuring the sealing of the upper part of the controller.

[0033] The tightening pressure brought about by the screw assembly will compress the sealing gasket 2, thereby ensuring the sealing of the lower part of the controller.

[0034] The upper and lower sealing structures ensure that the motor controller is completely sealed to achieve waterproof and dustproof functions.

Claims

1. A motor controller sealing structure, characterized in that: The invention comprises a bottom shell (1), a sealing gasket (2), a finished circuit board (3), and a front shell (4) which are arranged in sequence from bottom to top. The inner groove of the front shell (4) matches the outline of the plug-in of the finished circuit board (3). The front shell (4) is provided with an annular glue groove (41) on the periphery of the plug-in on the left and right rear three sides corresponding to the finished circuit board (3). The annular glue groove (41) is dotted with sealing glue (411) along the groove body. The front shell (4) is fastened to the bottom shell (1) by screws arranged around the circumference, so that the sealing glue (411) is squeezed and diffused to tightly bond the local contact surfaces of the finished circuit board (3) and the front shell (4).

2. The sealing structure of a motor controller according to claim 1, characterized in that: The finished circuit board (3) is provided with positive and negative plug-ins (31), three-way plug-ins (32), and a pin header (33). The finished circuit board (3) is provided with mounting brackets (34) on the left and right for mounting the positive and negative plug-ins (31) and the three-way plug-ins (32). A mounting plate (35) is provided at the rear of the middle of the finished circuit board (3) for mounting the pin header (33). The face shell (4) is provided with mounting grooves corresponding to the positive and negative plug-ins (31), the three-way plug-ins (32), and the pin header (33), and the outer end surfaces of the mounting grooves can be in contact with the corresponding mounting brackets (34) and the top plates of the mounting plate (35) up and down.

3. The sealing structure of a motor controller according to claim 2, characterized in that: The annular rubber groove (41) is located on the top surface of the placement groove platform, and the groove body of the annular rubber groove (41) corresponds to the periphery of the positive and negative plug-ins (31), the three-way plug-in (32), and the pin header (33).

4. The sealing structure of a motor controller according to claim 2, characterized in that: The mounting bracket (34) is in a T-shaped structure as a whole, and the outer edge of the top plate does not exceed the edge of the finished circuit board (3).

5. The sealing structure of a motor controller according to claim 2, characterized in that: The sealing glue (411) is paste glue.

6. The sealing structure of a motor controller according to claim 2, characterized in that: The sealing pad (2) is a soft silicone pad.

Images