CN216819599U - Electrical machine - Google Patents

Abstract

The utility model provides a motor, which comprises a junction box and a motor main body, wherein a wiring structure is arranged in the junction box, and a wire passing hole communicated to the wiring structure is formed in the wall surface of the junction box; the motor main body is provided with a cable, a wiring terminal and a sealing structure, the wiring terminal is connected with the free end of the cable, the sealing structure is arranged at the connecting position of the wiring terminal and the cable so as to seal the free end of the cable with the wiring terminal, the cable penetrates through the wire passing hole, and the wiring terminal is located in the wiring box and connected with the wiring structure. The technical scheme of this application can reduce the risk that produces the condensation in the terminal box.

Description

Electrical machine

Technical Field

The utility model relates to the technical field of motors, in particular to a motor.

Background

The external power source and the ground connection are generally connected through the special junction box to the existing motor, heat can be generated during the working of the motor, the temperature of ambient environment and gas inside the motor is increased, the temperature of the external environment of the junction box is low, when hot gas enters the junction box from the wire passing hole in the junction box or from the inside of a cable, water drops are easily formed in the junction box through condensation, the condensation phenomenon occurs, the insulation performance of the motor is reduced, and the use performance of the motor is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a motor, aiming at reducing the risk of condensation in a junction box.

In order to achieve the above object, the present invention provides a motor, including:

the wire connecting structure is arranged in the wire connecting box, and a wire passing hole communicated to the wire connecting structure is formed in the wall surface of the wire connecting box; and

the motor body, the motor body is equipped with cable, binding post and seal structure, binding post with the free end of cable is connected, seal structure locates binding post with the hookup location of cable, with binding post seals the free end of cable, the cable is worn to locate cross the line hole, binding post is located inside the terminal box and with wiring structure connects.

Optionally, the wiring terminal comprises a body and a wiring portion which are connected, the wiring portion is connected with the wiring structure, the body deviates from an opening at one end of the wiring portion, and the free end of the cable is inserted into the body from the opening.

Optionally, the sealing structure covers a connecting position of the cable and the body.

Optionally, the sealing structure is a double-walled heat shrink tube.

Optionally, the sealing structure is a sealant.

Optionally, the motor further comprises a sealing ring, the sealing ring is arranged between the hole wall of the wire passing hole and the cable and is arranged in a surrounding manner along the circumferential direction of the wire passing hole so as to isolate water vapor inside and outside the junction box.

Optionally, the seal ring comprises:

the ring main body is arranged in the wire passing hole, and the outer wall of the ring main body is attached to the wall of the wire passing hole; and

the elastic part, the elastic part certainly the inner wall of ring main part extends to the middle part, and follows the circumference of ring main part encircle the setting and with the ring main part is the contained angle setting, keeping away from of elastic part the one end of ring main part with the outer wall butt of cable.

Optionally, the sealing ring further includes an abutting portion, the abutting portion is disposed at a free end of the elastic portion and is circumferentially disposed along a circumferential direction of the ring main body to abut against an outer wall of the cable.

Optionally, the sealing ring further comprises a first hook, and the first hook is convexly arranged on the outer wall of the sealing ring, is positioned outside the junction box, and is hooked on the outer wall of the junction box;

and/or, the sealing ring further comprises a second clamping hook, and the second clamping hook is convexly arranged on the outer wall of the sealing ring, is positioned in the junction box and is hooked on the inner wall of the junction box.

Optionally, the junction box comprises:

the wiring structure comprises a shell, a wiring hole and a connecting piece, wherein an installation cavity is formed in the shell, an installation opening and the wiring hole are formed in the shell, and the wiring structure is arranged in the installation cavity;

the wiring structure is arranged in the installation cavity and used for fixing a cable;

the cover plate is covered on the mounting opening; and

and the sealing gasket is arranged around the circumferential direction of the mounting opening and clamped between the shell and the cover plate.

Optionally, the housing is provided with an installation groove, the installation groove is arranged around the installation opening, an installation protrusion is convexly arranged on the surface of the sealing gasket facing the housing, and the installation protrusion is arranged around the installation opening and is clamped in the installation groove;

and/or, sealed pad includes thermal-insulated portion and sealing, thermal-insulated portion pastes and locates the orientation of apron the face of installation cavity, sealing follows the circumference of thermal-insulated portion encircles the setting, and press from both sides and locate the apron with between the casing.

According to the technical scheme, the connecting terminal is connected to the free end of the cable of the motor main body, the sealing structure is arranged at the connecting position of the connecting terminal and the cable, so that the free end of the cable is sealed, when the motor main body is connected with the junction box, the cable penetrates through the wire passing hole of the junction box and enters the junction box, the connecting terminal is connected with the wiring structure of the junction box, and at the moment, hot air in the motor main body is prevented from entering the junction box from a wire core of the cable due to the fact that the free end of the cable is in a sealed state; simultaneously, the outer wall of cable and the pore wall laminating of crossing the line hole can avoid the outer steam of terminal box to get into in the terminal box to this has blocked the route that steam got into the terminal box, alright reduce the risk that the inside condensation that produces of terminal box.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a cross-sectional view of one embodiment of an electric machine of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is an enlarged view at C of FIG. 1;

FIG. 5 is a block diagram of one embodiment of the junction box of the present invention;

fig. 6 is a cross-sectional view of fig. 1 at position M-M.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a motor 100 that reduces the risk of condensation within the terminal box 10.

Referring to fig. 1 to 3, in some embodiments of the motor 100 of the present invention, the motor 100 includes a terminal box 10 and a motor main body 20, a wiring structure 12 is disposed inside the terminal box 10, and a wall surface of the terminal box 10 is provided with a wire passing hole 112 communicated to the wiring structure 10; the motor main body 20 is provided with a cable 21, a wiring terminal 22 and a sealing structure 23, the wiring terminal 22 is connected with the free end of the cable 21, the sealing structure 23 is arranged at the connecting position of the wiring terminal 22 and the cable 21 so as to seal the free end of the cable 21 with the wiring terminal 22, the cable 21 is arranged in the wiring hole 112 in a penetrating manner, and the wiring terminal 22 is arranged inside the junction box 10 and connected with the wiring structure 12.

Specifically, the motor 100 provided by the present application includes a motor main body 20 and a terminal box 10, the motor main body 20 has a stator winding therein, the motor main body 20 further includes a cable 21 electrically connected with the winding, the cable 21 extends outwards from the inside of the motor main body 20 to the inside of the terminal box 10 to be electrically connected with a wiring structure 12 inside the terminal box 10, connected with an external power source through the terminal box 10, and grounded. In some embodiments, the motor 100 is a three-phase motor 100, and three cables 21 are disposed thereon, at this time, three wire holes 112 are disposed on the junction box 10, and each cable 21 is disposed through one wire hole 112 and electrically connected to the wiring structure 12. Further, in the present embodiment, the free end of the cable 21 is provided with the connection terminal 22 and the sealing structure 23, wherein the connection terminal 22 contacts with the core in the cable 21 to form an electrical connection, the connection terminal 22 may be partially inserted into the free end of the cable 21 to contact with the core, or a part of the core of the cable 21 may be exposed out of the connection terminal 22 to contact, or in the following embodiments, the free end of the cable 21 is inserted into the connection terminal 22, which is not limited herein, the sealing structure 23 may be coated at a connection position of the connection terminal 22 and the cable 21 to seal the free end of the cable 21 together with the connection terminal 22, or when the cable 21 is inserted into the connection terminal 22, a sealing structure 23 may be formed by coating a sealing adhesive between the inner walls of the cable 21 and the connection terminal 22, which is not limited herein. The free end of the cable 21 can be sealed by the arrangement of the wiring terminal 22 and the sealing structure 23, and as can be understood, the cable 21 extends from the inside of the motor main body 20 to the inside of the junction box 10, and the free end of the cable 21 located inside the junction box 10 is sealed, so that hot air and steam inside the motor main body 20 can be effectively prevented from flowing into the junction box 10 from a wire core of the cable 21, and condensation is prevented from being formed in the inside of the junction box 10.

In addition, the insulating skin of the cable 21 has a smooth surface so as to be attached to the hole wall of the wire through hole 112 when passing through the wire through hole 112, or in the following embodiment, a sealing ring 30 is arranged between the cable 21 and the hole wall of the wire through hole 112 so as to achieve a good sealing effect, so that the requirement of IP67 (IP is an abbreviation of Ingress Protection Rating (or International Protection code) and defines the Protection capability of an interface against liquid and solid particles) is met, the IP is followed by 2 digits, the 1 st is a solid Protection Rating, the range of which is 0-6 and respectively represents the Protection against large particles and dust, and the 2 nd is a liquid Protection Rating, the range of which is 0-8 and respectively represents the Protection terminal box under the condition of vertical water drops to water bottom pressure, the larger the digit represents the stronger the capability), so that water vapor outside the terminal box 10 is prevented from entering the inside of the terminal box 10.

Therefore, it can be understood that, according to the technical solution of the present invention, the connection terminal 22 is connected to the free end of the cable 21 of the motor main body 20, and the sealing structure 23 is disposed at the connection position of the connection terminal 22 and the cable 21, so as to seal the free end of the cable 21, so that when the motor main body 20 is connected to the junction box 10, and the cable 21 passes through the wire passing hole 112 of the junction box 10 and enters the junction box 22 into the junction box 10, the connection terminal 22 is connected to the connection structure 12 of the junction box 10, and at this time, because the free end of the cable 21 is in a sealed state, hot air in the motor main body 20 is prevented from entering the junction box 10 from the core of the cable 21; meanwhile, the outer wall of the cable 21 is attached to the hole wall of the wire passing hole 112, so that water vapor outside the junction box 10 can be prevented from entering the junction box 10, a path for the water vapor to enter the junction box 10 is blocked, and the risk of condensation generated inside the junction box 10 can be reduced.

It should be noted that, in this embodiment, the wiring structure 12 is disposed in the mounting cavity 111 to connect the external connection wire 200 and the connection terminal 22, at this time, the wiring structure 12 may be a wiring metal bar, so that the connection terminal 22 and the external connection wire 200 are respectively connected to the wiring metal bar, thereby achieving the electrical connection between the motor main body 20 and the external connection wire 200 through the wiring metal bar, at this time, an insulating material may be coated outside the wiring metal bar, and only the connection position of the connection terminal 22 and the connection position of the external connection wire 200 are exposed, so as to improve the safety of the use process; of course, the wiring structure 12 may also include a locking member 122, a connection terminal 210 is disposed at an end of the external wiring line 200, the connection terminal 210 and the connection terminal 22 are fixedly connected by the locking member 122, and also, the electrical connection between the motor main body 20 and the external wiring line 200 can be achieved, in some embodiments, an insulating block 121 is fixed in the housing 11, the connection terminal 210 and the connection terminal 22 are fixed on the insulating block 121 in a stacked manner by using the locking member 122 such as a bolt, so that the positional stability of the connection terminal 210 and the connection terminal 22 in the installation cavity 111 is maintained, the connection terminal 22 and the connection terminal 210 are prevented from swinging in the installation cavity 111 when the connection box 10 swings, and the insulating block 121 is disposed, so that the use safety can be improved, and the electricity leakage and short-circuit phenomena are avoided.

In some embodiments, the junction box 10 further includes a waterproof plug 40, one end of the external wire 200 is inserted into the junction box 10, and at this time, the waterproof plug 40 is sleeved on the external wire 200 and plugs the external wire wiring hole on the casing 11 of the junction box 10, so as to prevent external water vapor from entering the inside of the junction box 10, and improve the use safety of the junction box 10.

Referring to fig. 5 and 6, in some embodiments of the motor 100 of the present invention, the connection terminal 22 includes a connection portion 222 and a body 221 connected to each other, the connection portion 222 is connected to the connection structure 12, an end of the body 221 facing away from the connection portion 222 is open, and a free end of the cable 21 is inserted into the body 221 through the opening.

In this embodiment, the motor 100 further includes a connection terminal 22, and the connection terminal 22 is connected to a free end of the cable 21 of the motor main body 20 and disposed in the terminal box 10 to be connected to the connection structure 12 in the terminal box 10. Specifically, binding post 22 is including the wiring portion 222 and the body 221 that are connected, body 221 one end opening, wiring portion 222 is connected at the one end outer wall that deviates from the opening of body 221, body 221 and wiring portion 222 are electrically conductive material, can be copper or copper alloy etc., the cable 21 of motor main part 20 is inserted and is established in body 221, and contact with body 221 in order to form the electricity and be connected, the setting of body 221 has increased the connection area between binding post 22 and the cable 21, the joint strength between cable 21 and the binding post 22 has been improved.

In this embodiment, the sealing structure 23 may be formed by filling a sealant between an outer wall of the cable 21 and an inner wall of the body 221, where the sealant has fluidity, and may fill a gap between the cable 21 and the body 221, that is, may play a role in sealing, and may also bond the cable 21 and the connection terminal 22, so as to improve structural stability. Alternatively, the sealing structure 23 may be coated on the outer wall of the cable 21 and the body 221, and may be an adhesive tape or a heat shrink tube, etc. in the following embodiments, which may perform the sealing and connecting functions and also facilitate the assembling operation.

Referring to fig. 5 and 6, in some embodiments of the motor 100 of the present invention, the sealing structure 23 covers a connecting position of the cable 21 and the body 221.

In this embodiment, the motor 100 further includes a sealing structure 23, the sealing structure 23 is wrapped at the connecting position of the cable 21 and the body 221, which can play a role in sealing, so as to prevent the gas in the motor main body 20 from entering the junction box 10 through the inner space of the cable 21, thereby further reducing the risk of condensation in the junction box 10, and the sealing structure 23 can be a tape or a heat shrink tube, which can play a role in sealing and connecting, and also make the assembly operation more convenient.

In some embodiments of the present machine 100, the sealing structure 23 is a double-walled heat shrink tube.

In this embodiment, seal structure 23 is double-walled pyrocondensation pipe, and it can be understood, uses the pyrocondensation pipe as the protective sheath, is high elastic state under the heating state, and is heated the shrink, can make the inner wall of pyrocondensation pipe laminate completely at the outer wall of binding post 22 and cable 21, improves joint strength, and has sealed effect. Furthermore, the heat-shrinkable tube is a double-wall heat-shrinkable tube and comprises a soft cross-linked polyolefin outer layer and a hot melt adhesive inner layer, wherein the outer layer has the advantages of insulation, corrosion resistance, wear resistance and the like, and the inner layer has the advantages of low melting point, water resistance, sealing, high adhesion and the like; the connection strength between the cable 21 and the connection terminal 22 can be improved, the sealing performance can be improved, moisture can be prevented from entering the inner side of the cable 21, and hot air in the motor main body 20 can be prevented from entering the junction box 10 along the inner space of the cable 21 and being condensed to form condensation in the junction box 10.

In some embodiments of the motor 100 of the present invention, the sealing structure 23 is a sealant, and the sealant is filled between the cable 21 and the body 221.

It can be understood that the sealant has fluidity, and can fully fill the gap between the cable 21 and the body 221, i.e. can play a role in sealing, and can also bond the cable 21 and the wiring terminal 22, so as to improve the structural stability.

Referring to fig. 2 and 3, in some embodiments of the motor 100 of the present invention, the motor 100 further includes a sealing ring 30, and the sealing ring 30 is disposed between the hole wall of the wire through hole 112 and the cable 21 and is circumferentially disposed along the circumference of the wire through hole 112 to isolate water vapor inside and outside the junction box 10.

In this embodiment, be provided with sealing ring 30 in the line hole 112, the outer wall of sealing ring 30 and the pore wall butt of crossing line hole 112, sealing ring 30 middle part forms through-hole 36, when terminal box 10 is applied to motor 100, through-hole 36 on the sealing ring 30 is worn to locate by motor 100's cable 21 and the inner wall butt with sealing ring 30, with closed terminal box 10, so set up, alright in avoiding the outer steam of terminal box 10 and steam to get into terminal box 10, thereby reduce the risk of the condensation phenomenon appearing in the terminal box 10, improve motor 100's safety in utilization, ensure motor 100 performance.

In some embodiments, in order to improve the sealing performance of the sealing ring 30, the sealing ring 30 has a certain elasticity, so that when the cable 21 passes through the sealing ring 30, the sealing ring 30 is deformed by being pressed by the hole wall of the wire through hole 112 and the cable 21 in the radial direction, so that the sealing ring 30 better fits with the hole wall of the wire through hole 112 and the cable 21, and the sealing performance is improved. At this time, the material of the sealing ring 30 may be an elastic material such as rubber, or the sealing ring 30 may be an elastic structure in the following embodiments, which is not limited herein; of course, the sealing rubber may also be used as the sealing ring 30, that is, after the cable 21 passes through the wire passing hole 112, the sealing rubber is filled between the cable 21 and the hole wall of the wire passing hole 112 to form the sealing ring 30, and the sealing rubber has fluidity to completely fill the gap between the cable 21 and the hole wall of the wire passing hole 112, and can bond and fix the cable 21 and the junction box 10, thereby improving the connection stability. The sealing ring 30 made of elastic material can avoid the risk of glue flowing into the junction box 10 when using liquid material such as sealant.

Referring to fig. 3, in some embodiments of the motor 100 of the present invention, the sealing ring 30 includes a ring main body 31 and an elastic portion 32, the ring main body 31 is disposed in the wire through hole 112, and an outer wall of the ring main body 31 is attached to a hole wall of the wire through hole 112; elastic part 32 certainly the inner wall of ring main part 31 extends to the middle part, and follows the circumference of ring main part 31 encircle the setting and with ring main part 31 is the contained angle setting, keeping away from of elastic part 32 the one end of ring main part 31 with the outer wall butt of cable 21.

In this embodiment, the sealing ring 30 includes a ring main body 31 and an elastic portion 32 that are connected, an outer wall of the ring main body 31 is attached to a hole wall of the wire passing hole 112, the elastic portion 32 extends from an inner wall of the ring main body 31 along an axial direction of the wire passing hole 112 and gradually approaches to a middle portion of the wire passing hole 112, the elastic portion 32 forms a tapered structure, at this time, when the cable 21 is inserted into a through hole 36 in the middle of the elastic portion 32, the cable 21 presses the elastic portion 32 to make the elastic portion 32 approach to the inner wall of the ring main body 31, and meanwhile, the elastic portion 32 elastically deforms and expands outward, after the cable 21 passes through the through hole 36, elastic restoring force of the elastic portion 32 makes the elastic portion 32 have a contraction tendency of inward returning contraction, so as to clamp the cable 21, and tightly attach to the cable 21, thereby improving sealing performance of the sealing ring 30.

Referring to fig. 3, in some embodiments of the motor 100 of the present invention, the sealing ring 30 further includes an abutting portion 33, and the abutting portion 33 is disposed at a free end of the elastic portion 32 and surrounds along a circumferential direction of the ring main body 31 to abut against an outer wall of the cable 21.

In this embodiment, the sealing ring 30 further includes an abutting portion 33, the abutting portion 33 is disposed at a free end of the elastic portion 32 and circumferentially disposed along the ring main body 31, so that a contact area between the sealing ring 30 and the cable 21 can be increased, a clamping effect of the sealing ring 30 on the cable 21 is improved, and a sealing performance of the sealing ring 30 is improved.

Referring to fig. 3, in some embodiments of the motor 100 of the present invention, the sealing ring 30 further includes a first hook 34, and the first hook 34 is protruded from an outer wall of the sealing ring 30 and hooked on an outer wall of the terminal box 10.

In this embodiment, the outer wall of sealing ring 30 is equipped with first pothook 34 in a protruding manner, first pothook 34 is located outside terminal box 10, and set up towards the outer wall of terminal box 10, first pothook 34 and the outer wall butt of terminal box 10, it can be understood, when cable 21 passes inside sealing ring 30 entering terminal box 10, there is friction between cable 21 and the sealing ring 30, just probably drive sealing ring 30 and move to terminal box 10 is inside, the setting of first pothook 34, can avoid inside and can not play the sealed effect of crossing line hole 112 of sealing ring 30 entering terminal box 10, improve the stability of being connected of sealing ring 30 and terminal box 10, guarantee the sealing performance of sealing ring 30 in terminal box 10.

Referring to fig. 3, in some embodiments of the motor 100 of the present invention, the sealing ring 30 further includes a second hook 35, and the second hook 35 is protruded from an outer wall of the sealing ring 30 and hooked on an inner wall of the junction box 10.

In this embodiment, the protruding second pothook 35 that is equipped with of outer wall of sealing ring 30, second pothook 35 is located terminal box 10, and the inner wall of terminal box 10 is located to second pothook 35 hook, so sets up, can avoid cable 21 to take out sealing ring 30 together and can't play the effect of sealed line hole 112 when outwards extracting from crossing line hole 112, improves the stability of being connected of sealing ring 30 and terminal box 10, ensures the sealing performance of sealing ring 30 in terminal box 10.

In some embodiments, the sealing ring 30 is provided with the first hook 34 and the second hook 35 at the same time, and the first hook 34 and the second hook 35 are oppositely arranged and hooked on the outer wall and the inner wall of the terminal box 10, respectively, so that the connection stability of the sealing ring 30 and the terminal box 10 is improved, and the sealing performance of the sealing ring 30 in the terminal box 10 is ensured.

Furthermore, the second hook 35 extends from the outer wall of the sealing ring 30 to a side close to the first hook 34 and gradually leaves away from the outer wall of the sealing ring 30, and because the sealing ring 30 has a certain elasticity, the second hook 35 can be outwardly opened or close to the outer wall of the sealing ring 30, at this time, the sealing ring 30 can be plugged into the wire passing hole 112 from the inside of the terminal box 10, and the second hook 35 can pass through the wire passing hole 112, in this process, the first hook 34 abuts against the inner wall of the terminal box 10 and elastically deforms to be outwardly opened until the second hook 35 passes through the wire passing hole 112, so that the first hook 34 can have a contraction tendency of elastic retraction, and the first hook 34 clamps the side wall of the terminal box 10, thereby improving the connection strength of the sealing ring 30 and the terminal box 10. Still further, one side of the first hook 34, which is away from the second hook 35, is provided with a guide inclined plane, when the sealing ring 30 is plugged into the wire passing hole 112 from the inner side of the terminal box 10, the sealing ring 30 abuts against the hole wall of the wire passing hole 112, and the guide inclined plane can guide the sealing ring 30 to contract so that the first hook 34 passes through the wire passing hole 112, thereby improving the assembly convenience.

With combined reference to fig. 2, 4 and 6, in some embodiments of the motor 100 of the present invention, the junction box 10 includes a housing 11, a cover plate 13 and a gasket 14; a mounting cavity 111 is formed in the housing 11, the housing 11 is provided with a mounting opening and the wire passing hole 112, and the wiring structure 12 is arranged in the mounting cavity 111; the cover plate 13 is covered on the mounting opening; the sealing gasket 14 is arranged around the circumference of the mounting opening and is clamped between the shell 11 and the cover plate 13.

In this embodiment, the junction box 10 includes a housing 11 and a cover plate 13, the housing 11 forms an installation cavity 111 with an installation opening, and the cover plate 13 covers the installation cavity 111 in an openable manner, it can be understood that after the cable 21 of the motor main body 20 passes through the wire passing hole 112 and enters the interior of the junction box 10, the cable 21 needs to be connected to the wiring structure 12 inside the junction box 10 and form an electrical connection, and the junction box 10 is configured to be an openable and closable structure, so that a user can conveniently wire inside the junction box 10.

Further, the terminal box 10 further includes a gasket 14, and the gasket 14 is interposed between the cover plate 13 and the housing 11 and disposed around the mounting opening of the housing 11 to improve the sealing property between the housing 11 and the cover plate 13 and prevent external air from entering the mounting cavity 111 from between the housing 11 and the cover plate 13.

Referring to fig. 4, in some embodiments of the motor 100 of the present invention, the housing 11 is provided with a mounting groove 113, the mounting groove 113 is disposed around the mounting opening, a mounting protrusion 143 is protruded from a surface of the sealing gasket 14 facing the housing 11, and the mounting protrusion 143 is disposed around the mounting opening and is clamped in the mounting groove 113.

In this embodiment, the protruding installation protrusion 143 that is equipped with in the surface of sealed pad 14 towards the shell, the protruding mounting groove 113 that is equipped with of outer wall of casing 11, mounting groove 113 and the protruding setting of installing 143 all around the installing port, and the protruding card of installing 143 establishes in mounting groove 113, so sets up, can improve the stability of being connected of sealed pad 14 and casing 11, reduces sealed pad 14 risk of droing.

Referring to fig. 4, in some embodiments of the motor 100 of the present invention, the sealing gasket 14 includes a heat insulation portion 141 and a sealing portion 142, the heat insulation portion 141 is attached to a plate surface of the cover plate 13 facing the mounting cavity 111, and the sealing portion 142 is disposed around the heat insulation portion 141 in a circumferential direction and is interposed between the cover plate 13 and the housing 11.

In this embodiment, the gasket 14 includes a heat insulating portion 141 and a sealing portion 142, the sealing portion 142 is disposed around the heat insulating portion 141, and the heat insulating portion 141 covers the plate surface of the cover plate 13 facing the housing 11, so as to perform both a sealing function and a heat insulating function. It can be understood that the condensation phenomenon is generated inside the junction box 10, and the condensation phenomenon is generated due to the fact that the external temperature of the junction box 10 is lower and the junction box 10 is subjected to heat exchange, so that the junction box 10 is rapidly cooled to cause gas condensation, the heat transfer between the external environment and the junction box 10 can be reduced due to the arrangement of the heat insulation portion 141, and the condensation phenomenon caused by the gas condensation due to the cooling of the junction box 10 is avoided.

It should be noted that, in this embodiment, the sealing portion 142 and the heat insulating portion 141 may be made of different materials to have sealing and heat insulating functions, or may be made of the same material, for example, a rubber material with poor heat conductivity may be used, the rubber material has poor heat conductivity and a good heat insulating function, and the rubber material has elasticity, and deforms when being pressed to adhere to the outer walls of the cover plate 13 and the housing 11, so as to achieve a good sealing function.

Further, in some embodiments, the inner wall of the housing 11 is also attached with a thermal insulation pad to reduce heat transfer between the external environment and the junction box 10. As is common, the terminal box 10 is fixed on the motor main body 20, and the mounting opening and the cover plate 13 are disposed on a side away from the motor main body 20, at this time, heat transfer exists between the terminal box 10 contacting the motor main body 20 and the motor main body 20, and at this time, only a heat insulation pad needs to be disposed on one side of the cover plate 13.

In some embodiments, the enameled wire of the motor 100 is welded to the cable 21 by resistance welding, the copper cross-sectional area of the cable 21 meets the current-carrying requirement of the motor 100, and the temperature resistance of the insulation sheath of the cable 21 meets the requirement of the motor 100. The position where the cable 21 is welded with the enameled wire is bound and fixed in the coil 24, and the cable 21 is directly led out from a wire outlet point; it can be understood that one end of the cable 21 is fixed in the coil 24, and the coil 24 is also subjected to the dipping process, and the surface of the coil 24 is coated with a paint film, so that the hot gas can be well prevented from being transmitted from the core of the cable 21 to the cavity of the junction box 10. The coil 24 is an internal winding of the motor body 20, is disposed around the stator core 25, and generates a magnetic force with the stator core 25 when energized.

With reference to fig. 2 and 3, in some embodiments of the motor 100 of the present invention, the terminal box 10 is fixedly connected to the motor main body 20, the wire through hole 112 of the terminal box 10 is disposed opposite to the cable 21 outlet of the motor main body 20, and the motor 100 further includes a sealing ring 50, wherein the sealing ring 50 is disposed around the wire through hole 112 and the cable 21 outlet, and is interposed between the terminal box 10 and the motor main body 20.

So set up, can avoid external gas to get into motor main body 20's inside cavity and terminal box 10 inner chamber, further improve sealing capacity, avoid motor main body 20's inside cavity and terminal box 10 inner chamber condensation phenomenon to appear, improve motor 100's safety in utilization, guarantee motor 100's performance and life.

The utility model further provides a power assembly, which includes the motor 100 described in any of the foregoing embodiments, and the specific structure of the motor 100 refers to the foregoing embodiments, which are not described herein again. The power assembly refers to a series of component assemblies which generate power on a vehicle and transmit the power to a road surface. Since the power assembly provided by the present application employs all technical solutions of all the aforementioned embodiments, at least all the beneficial effects brought by all the aforementioned technical solutions are provided, and detailed descriptions thereof are omitted here.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An electric machine, comprising:

the wire connecting structure is arranged in the wire connecting box, and a wire passing hole communicated to the wire connecting structure is formed in the wall surface of the wire connecting box; and

the motor body, the motor body is equipped with cable, binding post and seal structure, binding post with the free end of cable is connected, seal structure locates binding post with the hookup location of cable, with binding post seals the free end of cable, the cable is worn to locate cross the line hole, binding post is located inside the terminal box and with wiring structure connects.

2. The motor according to claim 1, wherein the connection terminal includes a body and a connection portion connected to each other, the connection portion being connected to the connection structure, an end of the body facing away from the connection portion being open, a free end of the cable being inserted into the body from the opening.

3. The electric machine of claim 2, wherein the sealing structure covers a connection location of the cable to the body.

4. The electric machine of claim 3, wherein the sealing structure is a double-walled heat shrink tube.

5. The electric machine of claim 2 wherein said sealing structure is a sealant.

6. The motor of claim 1, further comprising a sealing ring, wherein the sealing ring is arranged between the hole wall of the wire through hole and the cable and is arranged around the circumference of the wire through hole to isolate water vapor inside and outside the junction box.

7. The electric machine of claim 6, wherein the seal ring comprises:

the ring main body is arranged in the wire passing hole, and the outer wall of the ring main body is attached to the wall of the wire passing hole; and

the elastic part, the elastic part certainly the inner wall of ring main part extends to the middle part, and follows the circumference of ring main part encircle the setting and with the ring main part is the contained angle setting, keeping away from of elastic part the one end of ring main part with the outer wall butt of cable.

8. The electric machine according to claim 7, wherein the seal ring further comprises an abutting portion provided at a free end of the elastic portion and circumferentially provided along a circumferential direction of the ring main body to abut against an outer wall of the cable.

9. The motor of claim 6, wherein the sealing ring further comprises a first hook, the first hook is protruded from the outer wall of the sealing ring, is located outside the junction box, and is hooked on the outer wall of the junction box;

and/or, the sealing ring further comprises a second clamping hook, and the second clamping hook is convexly arranged on the outer wall of the sealing ring, is positioned in the junction box and is hooked on the inner wall of the junction box.

10. The electric machine of any one of claims 1 to 9, wherein the junction box further comprises:

the wiring structure comprises a shell, a wiring hole and a connecting piece, wherein a mounting cavity is formed in the shell, a mounting opening and the wiring hole are formed in the shell, and the wiring structure is arranged in the mounting cavity;

the cover plate is covered on the mounting opening; and

and the sealing gasket is arranged around the circumferential direction of the mounting opening and clamped between the shell and the cover plate.

Images