Motor shell sealing structure

Abstract

The utility model discloses a motor shell sealing structure, a motor shell comprises an upper shell and a lower shell, a motor is arranged in the motor shell, the side parts of the upper shell and the lower shell are connected with bolts, the upper end of the lower shell is provided with a glue groove, the glue groove is internally provided with sealant, and the sealant is connected with the upper shell and the lower shell. And assembly is convenient, cost is low, and maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor housings, and specifically relates to a sealing structure of a motor housing. Background Art

[0002] At present, the degree of electrification of vehicle body parts is getting higher and higher, such as electric doors, electric rearview mirrors, electric tail wings, electric fuel tank caps, etc. These electric "parts" all rely on motors to drive actuators, and the actuators complete specific tasks. Since the motor is driven by electricity, insulation and waterproofing are required to ensure the normal and reliable operation of the motor.

[0003] The common practice of motor waterproofing is to place the motor in a closed cavity, which is usually composed of two shells, a sealing ring and a fastening bolt. There are usually two methods for this type of protection. The first method is that the sealing ring is a separate part. When assembling, the sealing ring is first placed on one of the shells, then covered with the other shell, and finally locked with a fastening bolt. The disadvantage of this method is that the shell is generally large, and the sealing ring is usually made of soft material and has a small cross-sectional area. The sealing ring is easy to entangle and knot, and it is difficult to assemble on the production line. The second method is that the sealing ring is first formed into one piece with one of the shells through a mold (two injection molding / pressing), and then covered with another shell, and finally locked with a fastening bolt. The disadvantage of this method is that it requires a two-color mold or a two-time molding mold. The mold cost is high and it is not suitable for small batch production. It cannot be verified before the sample is molded. In the era of personalized products and diversified small batches, this method has low economic value. There is also ultrasonic / laser welding of two shells into a whole, but it is not conducive to repair or replacement of accessories.

[0004] The utility model patent with announcement number CN204652097U was published on September 16, 2015. The name of the aluminum motor housing end sealing structure is disclosed. The aluminum motor housing end sealing structure includes a motor housing and a plurality of aluminum sealing plates, wherein the end ring of the motor housing has a plurality of grooves matching the aluminum sealing plate structure, and the aluminum sealing plate is installed in the grooves by glue. The aluminum motor housing end sealing structure has a complex structure, high application cost, and is not conducive to the maintenance of the motor. Utility Model Content

[0005] The utility model aims to provide a motor housing sealing structure which is convenient to assemble, low in cost and easy to maintain in view of the deficiencies in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The motor housing sealing structure comprises an upper housing and a lower housing, a motor is arranged in the motor housing, the upper housing and the lower housing are connected by bolts on the sides, a glue groove is arranged at the upper end of the lower housing, a sealant is arranged in the glue groove, and the sealant connects the upper housing and the lower housing.

[0008] Avoidance grooves are arranged on both sides of the top of the glue groove, the top of the sealant is connected to the bottom of the upper shell body, and the side and bottom of the sealant are both connected to the glue groove.

[0009] The upper shell side is provided with a first connection platform, the lower shell side is provided with a second connection platform, the first connection platform is provided with a mounting hole, the second connection platform is provided with a threaded hole, and the bolt extends from the mounting hole and cooperates with the threaded hole.

[0010] The lower shell includes an installation cavity, the bottom of the motor is arranged in the installation cavity, and the glue groove is installed around the cavity.

[0011] The exteriors of the first connecting platform and the second connecting platform are both arc-shaped structures.

[0012] The first connection platforms are distributed at equal intervals on the side of the upper shell, and the second connection platforms are distributed at equal intervals on the side of the lower shell.

[0013] The first connecting platform and the upper shell are an integrated structure; the second connecting platform and the lower shell are an integrated structure.

[0014] The mounting hole is a stepped hole.

[0015] The technical effect of the utility model is as follows: the motor housing sealing structure of the utility model is adopted, a connection platform is designed on the outside of the motor housing, the bolt connection is reasonably arranged, the upper housing and the lower housing are connected into a whole motor housing by bolts, a reliable connection effect is achieved, and disassembly is convenient, which is beneficial to the later maintenance process, and an avoidance groove is designed on the glue groove to ensure that the sealant is completely fitted with the upper and lower housings, and at the same time, it can accommodate excessive compressed glue, so as to achieve better sealing protection, and the sealing assembly of the motor housing can be completed by tightening the bolts and dispensing the sealant with a glue dispenser, which facilitates the assembly process, and the glue becomes one with the motor housing after curing, and there will be no entanglement or knotting, which will not affect the assembly of the production line, saving mold costs and development cycles, and improving the development speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 It is an exploded schematic diagram of the motor housing sealing structure of the utility model;

[0018] Figure 2It is a cross-sectional schematic diagram of the motor housing sealing structure of the utility model;

[0019] Figure 3 yes Figure 2 A partial enlarged view of .

[0020] The markings in the figure are: 1. Motor; 2. Upper shell; 3. Lower shell; 4. Glue groove; 5. Sealant; 6. Bolt; 7. First connecting platform; 8. Second connecting platform; 9. Mounting hole; 10. Threaded hole; 11. Avoidance groove; 12. Mounting cavity. DETAILED DESCRIPTION

[0021] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0022] like Figures 1 to 3 As shown, the motor housing sealing structure comprises an upper housing 2 and a lower housing 3, a motor 1 is arranged in the motor housing, bolts 6 are connected to the sides of the upper housing 2 and the lower housing 3, a glue groove 4 is arranged at the upper end of the lower housing 3, a sealant 5 is arranged in the glue groove 4, and the sealant 5 connects the upper housing 2 and the lower housing 3.

[0023] The motor housing is divided into an upper housing 2 and a lower housing 3. After the upper housing 2 and the lower housing 3 are connected by bolts 6 and sealant 5, they can be tightly connected by tightening the bolts 6 and dispensing the sealant 5. The dispensing sealant 5 method only requires the sealant 5 and a dispensing machine, which not only facilitates the production and assembly process, but also improves the sealing performance of the motor housing. Among them, the sealant 5 can be made of a material with good viscosity and bonding performance, such as silicone. After curing, the sealant 5 has high elasticity, excellent tear resistance, aging resistance and high and low temperature performance.

[0024] like Figure 3 As shown, avoidance grooves 11 are provided on both sides of the top of the glue groove 4, the top of the sealant 5 is connected to the bottom of the upper shell 2, and the sides and bottom of the sealant 5 are connected to the glue groove 4. The avoidance groove 11 serves as an escape space for excessive compressed glue. When the bolt 6 connects and locks the upper shell 2 and the lower shell 3, the sealant 5 is squeezed and compressed by the shell to produce elastic deformation, and the excessive compressed glue will be squeezed into the avoidance grooves 11 on both sides of the glue groove 4. The sealant 5 is completely fitted with the upper and lower shells 3 to achieve a good sealing and protective effect. At the same time, the design of the avoidance groove 11 also expands the connection area between the sealant 5 and the upper shell 2, improving the overall sealing performance of the motor shell.

[0025] like Figure 1As shown, a first connection platform 7 is provided on the side of the upper housing 2, a second connection platform 8 is provided on the side of the lower housing 3, a mounting hole 9 is provided on the first connection platform 7, a threaded hole 10 is provided on the second connection platform 8, and a bolt 6 extends from the mounting hole 9 and cooperates with the threaded hole 10. The first connection platform 7 and the second connection platform 8 provide connection positions for the bolt 6, and both are located outside the motor housing, and the operating space for the bolt 6 connection is large, which can facilitate the housing assembly and maintenance process.

[0026] like Figure 1 As shown, the lower housing 3 includes a mounting cavity 12, the bottom of the motor 1 is arranged in the mounting cavity 12, and the glue groove 4 is located around the mounting cavity 12. The glue groove 4 is located around the upper end of the lower housing 3. After such a design, the glue groove 4 forms an annular structure adapted to the shape of the mounting cavity 12, and the sealant 5 is filled along the glue groove 4 to form a ring-shaped connection effect, so that the contact surfaces of the upper housing 2 and the lower housing 3 are connected by the sealant 5, which effectively prevents the generation of a gap between the housings and provides a reliable sealing effect for the internal motor 1 and its driving parts.

[0027] like Figure 1 As shown, the first connection platform 7 and the second connection platform 8 are both arc-shaped structures. The cross-sectional dimensions of the first connection platform 7 and the second connection platform 8 are adapted to each other. In the above structure, after the upper shell 2 and the lower shell 3 are locked by bolts 6, the two can fit tightly. The arc-shaped structure is conducive to the dispersion of stress, preventing deformation and damage caused by local stress concentration on the shell, and the locking is more reliable.

[0028] like Figure 1 As shown, the first connection platforms 7 are evenly spaced on the side of the upper housing 2, and the second connection platforms 8 are evenly spaced on the side of the lower housing 3. Arranging connection platforms at multiple locations on the motor housing can improve the distribution of locking force after the upper housing 2 and the lower housing 3 are connected to be more uniform.

[0029] The first connection platform 7 and the upper housing 2 are an integrated structure; the second connection platform 8 and the lower housing 3 are an integrated structure. The motor housing adopts an integrated structure, which has higher structural strength and better protection performance. The motor housing is divided into two housings as a whole, which can facilitate the assembly of the motor.

[0030] like Figure 1 As shown, the mounting hole 9 is a stepped hole. Designing the mounting hole 9 as a stepped hole prevents the disassembly end of the bolt 6 from being located outside the motor housing, thereby protecting the disassembly end of the bolt 6 and dispersing the locking force applied by the extrusion surface of the bolt 6.

[0031] The motor housing sealing structure is assembled by first dispensing sealant 5 in the glue groove 4 of the lower housing 3 using a glue dispenser. After the sealant 5 is cured, the motor 1 is installed into the lower housing 3, and then the upper housing 2 is covered, and finally the bolts 6 are tightened. After the bolts 6 tighten the upper housing 2 and the lower housing 3, the cured sealant 5 will produce elastic deformation. Under the locking force of the bolts 6, the sealant 5 is completely fitted with the upper and lower housings 3. At the same time, the excessive amount of compressed glue will be squeezed into the air-avoiding space on both sides of the glue groove 4 of the lower housing 3 to achieve better protection. After the glue is cured, there will be no entanglement or knotting, which will not affect the assembly of the production line, and the development speed will be improved. Its structural performance is equivalent to that of two-color injection molding or secondary injection molding, which saves mold costs, shortens the development cycle, and improves market competitiveness.

[0032] The motor housing sealing structure designs a connection platform on the outside of the motor housing, arranges the bolt 6 connection reasonably, connects the upper housing 2 and the lower housing 3 into a motor housing as a whole through the bolt 6, achieves a reliable connection effect, and is easy to disassemble, which is beneficial to the later maintenance process. By designing an avoidance groove 11 on the glue groove 4, it is ensured that the sealant 5 is completely fitted with the upper and lower housings 3, and at the same time, it can accommodate excessive compressed glue, so as to achieve better sealing protection. The sealing assembly of the motor housing can be completed by tightening the bolt 6 and dispensing the sealant 5 with a glue dispenser, which facilitates the assembly process. After the glue is cured, it becomes one with the motor housing, and there will be no entanglement or knotting, which does not affect the assembly of the production line, saves mold costs and development cycles, and improves the development speed.

[0033] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A motor housing sealing structure, characterized in that: The motor housing comprises an upper housing (2) and a lower housing (3), a motor (1) is arranged in the motor housing, the upper housing (2) and the lower housing (3) are connected at their sides by bolts (6), a glue groove (4) is arranged at the upper end of the lower housing (3), a sealant (5) is arranged in the glue groove (4), and the sealant (5) connects the upper housing (2) and the lower housing (3).

2. The motor housing sealing structure according to claim 1, characterized in that: Avoidance grooves (11) are provided on both sides of the top of the glue groove (4), the top of the sealant (5) is connected to the bottom of the upper shell (2), and the side and bottom of the sealant (5) are connected to the glue groove (4).

3. The motor housing sealing structure according to claim 1 or 2, characterized in that: The upper shell (2) is provided with a first connecting platform (7) on the side, and the lower shell (3) is provided with a second connecting platform (8) on the side. The first connecting platform (7) is provided with a mounting hole (9), and the second connecting platform (8) is provided with a threaded hole (10). The bolt (6) extends from the mounting hole (9) and cooperates with the threaded hole (10).

4. The motor housing sealing structure according to claim 3, characterized in that: The lower housing (3) comprises a mounting cavity (12), the bottom of the motor (1) is arranged in the mounting cavity (12), and the glue groove (4) is arranged around the mounting cavity (12).

5. The motor housing sealing structure according to claim 4, characterized in that: The exteriors of the first connecting platform (7) and the second connecting platform (8) are both arc-shaped structures.

6. The motor housing sealing structure according to claim 5, characterized in that: The first connection platforms (7) are distributed at equal intervals on the side of the upper shell (2), and the second connection platforms (8) are distributed at equal intervals on the side of the lower shell (3).

7. The motor housing sealing structure according to claim 5, characterized in that: The first connecting platform (7) and the upper shell (2) are an integrated structure; the second connecting platform (8) and the lower shell (3) are an integrated structure.

8. The motor housing sealing structure according to claim 3, characterized in that: The mounting hole (9) is a stepped hole.

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