CN214674669U

CN214674669U - Wire passing hole sealing structure and integrated small explosion-proof sealing motor

Info

Publication number: CN214674669U
Application number: CN202120533533.1U
Authority: CN
Inventors: 张攀
Original assignee: Xi'an Zhide Automobile Electronic Control System Co ltd
Current assignee: Xi'an Zhide Automobile Electronic Control System Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-11-09
Anticipated expiration: 2031-03-15

Abstract

The utility model belongs to the technical field of electrical equipment, a cross small-size flame proof sealing motor of line hole seal structure and integration is disclosed, including casing, mounting screw, clamp plate, O shape circle and cable, the mounting groove has been seted up to casing a terminal surface, and another terminal surface of casing has been seted up and has been crossed the line hole, and the mounting groove with cross the line hole and link up and coaxial, the O shape circle sets up in the mounting groove, and the cable passes the line hole and closely suit in the O shape circle, the clamp plate center is provided with the through-hole, and the clamp plate is provided with the mounting screw hole all around, the cable passes the through-hole of clamp plate, and the mounting screw hole that mounting screw passed the clamp plate is fixed in a casing terminal surface with the clamp plate, clamp plate compression O shape circle makes O shape circle have the compression volume.

Description

Wire passing hole sealing structure and integrated small explosion-proof sealing motor

Technical Field

The utility model belongs to the technical field of electrical equipment, concretely relates to cross small-size flame proof sealing motor of line hole seal structure and integration.

Background

Along with the development requirements of social economy, more and more products develop towards the direction of miniaturization, integration and electromotion, so that the application scenes of the integrated integration form of the motor and the controller are more and more, and especially in the occasions with limited installation space, high temperature and high pressure and severe working environment, the integrated small explosion-proof motor is more required.

Because of the explosion-proof requirement of the integrated small explosion-proof motor and the structural characteristics thereof, the following failure problems are easy to occur:

the method comprises the following steps: explosion suppression failure;

secondly, the step of: the sealing between the copper wire and the wire skin of the cable fails;

③: the wire hole seal from the motor to the controller fails.

In the existing design scheme, the wire passing hole of the integrated small explosion-proof motor usually adopts a connector or sealant form. For a small explosion-proof motor, the structure is complex, the occupied space is large, the cost is high, the explosion-proof sealing effect cannot be achieved, and the reliability of the product is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a cross small-size flame proof sealing motor of line hole seal structure and integration, overcome the problem that exists among the prior art.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a cross line hole seal structure, includes casing, mounting screw, clamp plate, O shape circle and cable, a casing terminal surface has seted up the mounting groove, and another terminal surface of casing has seted up the line hole, and the mounting groove with cross the line hole and have link up and coaxial, the O shape circle sets up in the mounting groove, the cable passes the line hole and closely suit in the O shape circle, the clamp plate center is provided with the through-hole, and the clamp plate is provided with the mounting screw hole all around, the cable passes the through-hole of clamp plate, and mounting screw passes the mounting screw hole of clamp plate and is fixed in a casing terminal surface with the clamp plate, clamp plate compression O shape circle makes the O shape circle have the compression volume.

Preferably, the pressing plate is a circular plane plate, a through hole formed in the center of the pressing plate is tightly matched with the cable, four screw mounting holes are formed in the periphery of the pressing plate, an included angle between every two adjacent screw mounting holes is 90 degrees, and four mounting screws penetrate through the four screw mounting holes respectively to fix the pressing plate on one end face of the shell.

Preferably, the diameter of the axial section of the O-shaped ring is larger than the height of the mounting groove, and the pressure plate is a circular plane plate.

Preferably, two equal-diameter O-shaped rings are arranged in the mounting groove, the O-shaped rings are overlapped in the mounting groove, the sum of the diameters of the axial sections of the two O-shaped rings is larger than the height of the mounting groove, and the pressing plate is a circular plane plate.

Preferably, the cable outer layer is provided with a heat-shrinkable sleeve or a silicone rubber tube.

Preferably, the integrated small explosion-proof sealing motor comprises a controller and a motor, the controller is connected with the motor through screws, the wire passing hole sealing structure is arranged on the shell, close to one side of the motor, of the controller, and a cable penetrates through the wire passing hole sealing structure and enters the shell of the controller from one side of the motor.

Preferably, the overlapping size of the overlapping surface of the controller and the motor is more than or equal to 6 mm.

Compared with the prior art, the utility model has the advantages of:

(1) the utility model discloses utilize the compression volume of O shape circle to carry out line hole sealing and flame proof for the small-size flame proof sealed motor structure of integration is more succinct, has effectively improved the space utilization of controller part simultaneously, reduces product cost, realizes in high pressure high temperature operational environment, flame proof and sealed effect, improves the reliability of motor;

(2) the utility model arranges the thermal shrinkage bush or the silicon rubber tube on the outer layer of the cable, and properly adjusts the outer diameter of the cable, thereby protecting the outer surface of the cable; the production process of dipping paint firstly and then encapsulating is adopted to protect the cable at the motor end, so that the problem of sealing failure between a copper wire and a wire sheath of the cable is solved;

(3) the utility model discloses cross line hole seal structure reasonable in design, simple structure, the flame proof function with cross the sealed effectual of line hole, but wide application in the sealed operating mode of needs flame proof.

Drawings

Fig. 1 is a schematic structural view of a sealing structure of a wire passing hole of the present invention;

FIG. 2 is a schematic structural diagram of an integrated small explosion-proof sealing motor of the present invention;

fig. 3 shows an alternative structure of the sealing structure of the wire hole of the present invention.

Description of the reference numerals

1. The device comprises a controller, 2, a motor, 3, a shell, 4, mounting screws, 5, a pressing plate, 6, an O-shaped ring, 7, a cable, 8, a superposition surface, 9, an explosion-proof flat gasket, 10 and a flange pressing plate;

3-1, an installation groove, 3-2 and a wire passing hole.

Detailed Description

The following description of the embodiments of the present invention is provided in connection with the following embodiments:

it should be noted that the structures, ratios, sizes, etc. illustrated in the present specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions that the present invention can be implemented, and any modifications of the structures, changes of the ratio relationships or adjustments of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the functions and the achievable purposes of the present invention.

Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Example 1

As shown in fig. 1, fig. 1 is a partial enlarged view of a portion a of fig. 2, the utility model discloses a line passing hole sealing structure, which comprises a shell 3, a mounting screw 4, a pressure plate 5, an O-ring 6 and a cable 7, one end surface of the shell 3 is provided with an installation groove 3-1, the other end surface of the shell 3 is provided with a wire passing hole 3-2, the installation groove 3-1 and the wire passing hole 3-2 are communicated and coaxial, the O-shaped ring 6 is arranged in the mounting groove 3-1, the cable 7 passes through the wire passing hole 3-2 and is tightly sleeved in the O-shaped ring 6, the pressing plate 5 is provided with a through hole in the center, the pressing plate 5 is provided with screw mounting holes all around, the cable 7 passes through the through hole of the pressing plate 5, the mounting screw 4 passes through the screw mounting hole of the pressing plate 5 to fix the pressing plate 5 on one end face of the shell 3, and the pressing plate 5 compresses the O-shaped ring 6 to enable the O-shaped ring 6 to have a compression amount.

Preferably, the outer layer of the cable 7 is provided with a heat-shrinkable sleeve or a silicone rubber tube, so that the outer diameter of the cable can be properly adjusted, and the outer surface of the cable can also be protected.

Example 2

As shown in fig. 1, preferably, the pressing plate 5 is a circular plane plate, a through hole formed in the center of the pressing plate 5 is tightly matched with the cable 7, four screw mounting holes are formed around the pressing plate 5, an included angle between two adjacent screw mounting holes is 90 °, and four mounting screws 4 penetrate through the four screw mounting holes respectively to fix the pressing plate 5 to one end face of the housing 3.

Example 3

As shown in fig. 1, it is preferable that the O-ring 6 has an axial sectional diameter larger than the height of the installation groove 3-1, and the pressing plate 5 is a circular plane plate.

As shown in FIG. 1, preferably, two O-rings 6 with equal diameters are arranged in the mounting groove 3-1, the O-rings 6 are overlapped in the mounting groove 3-1, the sum of the axial section diameters of the two O-rings 6 is larger than the height of the mounting groove 3-1, and the pressure plate 5 is a circular plane plate.

The specification and the size of the O-shaped ring 6 are determined according to the outer diameter of a cable 7 used by the motor and by combining GB/T3452, a wire through hole 3-2 and a mounting groove 3-1 are formed in the controller shell 3, the size of the wire through hole 3-2 is determined according to the outer diameter of the cable 7 used by the motor, and the size of the mounting groove 3-1 is determined according to the outer diameter of the selected O-shaped ring 6 and the calculated required compression amount.

Example 4

As shown in fig. 3, it is preferable that the O-ring 6 is replaced by a flame-proof flat washer 9, the pressure plate 5 is replaced by a flange pressure plate 10, and the cable 7 is replaced by a multi-core cable. The alternative scheme is verified to realize the explosion-proof sealing effect of the integrated small explosion-proof sealing motor.

Example 5

As shown in FIG. 2, preferably, the invention discloses an integrated small explosion-proof sealed motor, which comprises a controller 1 and a motor 2, wherein the controller 1 is connected with the motor 2 through a screw, and a shell, such as a shell body, arranged on one side, close to the motor 2, of the controller 1On the upper partAnd the cable 7 passes through the wire passing hole sealing structure and enters the shell of the controller 1 from one side of the motor 2.

As shown in FIG. 2, the overlapping dimension of the overlapping surface 8 of the controller 1 and the motor 2 is preferably more than or equal to 6 mm.

The overlapping size of the overlapping surface 8 of the controller 1 and the motor 2 is more than or equal to 6mm, which is beneficial to explosion suppression.

The working principle of the utility model is as follows:

the utility model discloses cross line hole seal structure includes casing 3, mounting screw 4, clamp plate 5, O shape circle 6 and cable 7, O shape circle 6 holes and cable 7 closely cooperate, and 7 cross-sections of the cable that use are circular, and O shape circle 6 guarantees that O shape circle 6 is higher than the mounting groove upper plane after packing into mounting groove 3-1, uses clamp plate 5 to compress tightly O shape circle 6, makes it have certain compression capacity in mounting groove 3-1 to realize the sealed effect of flame proof.

The cable 7 penetrates through the wire passing hole 3-2 in the shell of the controller 1 from the end of the motor 2 and is tightly matched with the inner hole of the O-shaped ring 6, then the cable is installed in the installation groove 3-1, the pressing plate 5 is connected with the shell of the controller 1 through the installation screw 4, and the O-shaped ring 6 is tightly pressed, so that the O-shaped ring 6 has a certain compression amount in the installation groove 3-1, and the effect of explosion-proof sealing is achieved.

In view of the structure and size restriction of the small-size flame proof sealed motor of an integration itself, when the cable 7 passes through the casing of controller 1 from motor 2, the line skin is broken easily, the problem of sealing failure between cable copper wire and the line skin appears. Aiming at the problem, in the production process of the motor 2, the process of firstly dipping paint and then encapsulating is adopted to protect the cable 7 at the end of the motor 2, so that the sealing failure between a copper wire and a wire sheath of the cable is solved.

The utility model discloses utilize the compression volume of O shape circle to go on the sealed and flame proof of line hole for the small-size flame proof sealed motor structure of integration is more succinct, has effectively improved the space utilization of controller part simultaneously, reduces product cost, realizes in high-pressure high temperature operational environment, and flame proof and sealed effect improve the reliability of motor.

The utility model arranges the thermal shrinkage bush or the silicon rubber tube on the outer layer of the cable, and properly adjusts the outer diameter of the cable, thereby protecting the outer surface of the cable; by adopting the production process of firstly dipping paint and then encapsulating, the cable at the motor end is protected, and the problem of sealing failure between the copper wire and the wire sheath of the cable is solved.

The utility model discloses cross line hole seal structure reasonable in design, simple structure, the flame proof function with cross the sealed effectual of line hole, but wide application in the sealed operating mode of needs flame proof.

Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.

Claims

1. A cross line hole seal structure which characterized in that: comprises a shell (3), a mounting screw (4), a pressure plate (5), an O-shaped ring (6) and a cable (7), one end surface of the shell (3) is provided with an installation groove (3-1), the other end surface of the shell (3) is provided with a wire passing hole (3-2), the installation groove (3-1) and the wire passing hole (3-2) are communicated and coaxial, the O-shaped ring (6) is arranged in the mounting groove (3-1), the cable (7) passes through the wire passing hole (3-2) and is tightly sleeved in the O-shaped ring (6), a through hole is arranged in the center of the pressure plate (5), screw mounting holes are arranged around the pressure plate (5), the cable (7) passes through the through hole of the pressing plate (5), the mounting screw (4) passes through the screw mounting hole of the pressing plate (5) to fix the pressing plate (5) on one end surface of the shell (3), the pressure plate (5) compresses the O-shaped ring (6) to enable the O-shaped ring (6) to have a compression amount.

2. The wire passing hole sealing structure according to claim 1, wherein: the pressing plate (5) is a circular plane plate, a through hole formed in the center of the pressing plate (5) is tightly matched with the cable (7), four screw mounting holes are formed in the periphery of the pressing plate (5), an included angle between every two adjacent screw mounting holes is 90 degrees, and four mounting screws (4) penetrate through the four screw mounting holes respectively to fix the pressing plate (5) on one end face of the shell (3).

3. The wire passing hole sealing structure according to claim 1, wherein: the diameter of the axial section of the O-shaped ring (6) is larger than the height of the mounting groove (3-1), and the pressing plate (5) is a circular plane plate.

4. The wire passing hole sealing structure according to claim 1, wherein: two equal-diameter O-shaped rings (6) are arranged in the mounting groove (3-1), the O-shaped rings (6) are overlapped in the mounting groove (3-1), the sum of the diameters of the axial sections of the two O-shaped rings (6) is larger than the height of the mounting groove (3-1), and the pressing plate (5) is a circular plane plate.

5. The wire passing hole sealing structure according to claim 1, wherein: the outer layer of the cable (7) is provided with a heat-shrinkable sleeve or a silicone rubber tube.

6. The utility model provides a small-size flame proof sealing motor of integration which characterized in that: the wire passing hole sealing structure comprises a controller (1) and a motor (2), wherein the controller (1) is connected with the motor (2) through a screw, the shell, close to the motor (2), of the controller (1) is provided with the wire passing hole sealing structure as claimed in any one of claims 1-5, and a cable (7) penetrates through the wire passing hole sealing structure and enters the shell of the controller (1) from one side of the motor (2).

7. The integrated small-sized flame-proof sealing motor according to claim 6, characterized in that: the overlapping size of the overlapping surface (8) of the controller (1) and the motor (2) is more than or equal to 6 mm.