CN218478927U

CN218478927U - Waterproof sealing tractor

Info

Publication number: CN218478927U
Application number: CN202222413984.9U
Authority: CN
Inventors: 唐建军
Original assignee: Ningbo Zhenguan Electric Appliance Co ltd
Current assignee: Ningbo Zhenguan Electric Appliance Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-02-14
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses a waterproof sealing tractor, which comprises a shell, a coil frame, a gear assembly and a coil assembly, wherein the coil frame, the gear assembly and the coil assembly are arranged in the shell; an outer cavity used for arrangement of the gear assembly is formed between the shell and the coil framework, a sealing cavity used for containing the conductive assembly is arranged in the coil framework, and pouring sealant is filled in the sealing cavity to improve sealing performance.

Description

Waterproof sealing tractor

Technical Field

The utility model relates to a washing machine accessory technical field, concretely relates to waterproof sealing's tractor.

Background

At present, a tractor is a key component for controlling the opening and closing of a drain valve and whether a brake disc is disengaged in a full-automatic washing machine, so whether the quality of the tractor is qualified or not is particularly important for influencing the quality of the whole machine. The tractor is externally provided with a pull rod, and the tractor is internally composed of a motor and a gear transmission system.

The tractor is provided with a motor, the rotation and timing are controlled by electrifying the motor, a motor terminal can be electrified only by being connected with a conductive wire, a coil framework and a terminal seat are integrally formed in the motor, the winding part of the coil framework is arranged in an open mode and is only closed through a shell, a wiring terminal and a lead are arranged in the terminal seat, the coil framework and the terminal seat are coated through a tractor shell, an external wiring end of the wiring terminal is exposed, an assembly gap inevitably exists between the shell and the wiring terminal, particularly in a northern area, the water is easy to seep from the assembly gap under the influence of water vapor and a damp environment in a bathroom, the normal use of the tractor is influenced, the tractor shakes when a washing machine works, the risk of the coil framework encountering water is larger, a sealing ring is arranged between the shell and the wiring terminal, but the assembly gap on the peripheral side cannot be guaranteed in the mode, the sealing ring is oxidized and corroded after long-term use, the contact of the tractor is poor, even the fire is caused, and the potential safety hazard exists.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide a waterproof sealing's tractor improves the leakproofness.

The above technical purpose of the present invention can be achieved by the following technical solutions: a waterproof sealing tractor comprises a shell, a coil framework, a gear assembly and a coil assembly, wherein the coil framework, the gear assembly and the coil assembly are arranged in the shell;

an outer cavity for arrangement of the gear assembly is formed between the shell and the coil framework, a sealing cavity for accommodating the conductive assembly is formed in the coil framework, and pouring sealant is filled in the sealing cavity.

Alternatively, the sealing of the sealing cavity can also be realized by plastic package.

Further, coil skeleton includes seat of honour and lower seat, seat of honour and lower seat closure constitute annular wire winding chamber and intercommunication the terminal cavity in wire winding chamber.

Furthermore, the terminal cavity is opened and is provided with the encapsulating mouth, encapsulating mouth department still closed has one to shield the unit, it is sealed fixed through the casting glue to shield the unit in encapsulating mouth department.

Further, conductive component is including inlaying the binding post of establishing in the terminal intracavity to and winding and establishing coil winding in the wire winding intracavity, coil winding is connected with binding post, binding post stretches into the wire winding intracavity through the terminal cavity.

Further, the terminal cavity is provided with an arc surface facing the glue filling opening, and the wiring terminals are arranged on two sides of the arc surface.

Further, a guide opening is formed between the terminal cavity and the winding cavity and is located at the highest horizontal position of the bottom of the terminal cavity.

Further, binding post includes insulating cover and plug connector, the plug connector upper end is connected with insulating cover, the plug connector lower extreme stretches into in the wire winding intracavity and is connected with coil winding, insulating cover stretches out the terminal chamber sets up.

Furthermore, a first positioning structure matched with the wiring terminal is arranged in the terminal cavity, and the wiring terminal is exposed at the glue filling opening.

Furthermore, a second positioning structure is arranged on the shielding unit, and the second positioning structure is matched with the first positioning structure and fixes the wiring terminal.

Furthermore, the upper seat and the lower seat are fixed through ultrasonic welding to be mutually closed to form a sealed cavity. Furthermore, the glue filling port is matched with the cross section of the terminal cavity, and the conductive assembly and the positioning structure are exposed at the glue filling port.

Further, the entrance in wire winding chamber still is equipped with the wire winding groove, the wire winding groove borders on the terminal cavity sets up, just conductive component has the coil terminal that stretches into in the wire winding intracavity, the wire winding groove sets up with the coil terminal is relative.

Further, the first positioning structure comprises:

the first clamping grooves are matched with the contours of the insulating sleeves, and the first clamping grooves are clamped with the two end parts of the insulating sleeves;

the second clamping groove is used for embedding the plug connector main body;

and the third clamping groove is used for allowing the coil terminal of the plug connector to slide in, and is open at the bottom and communicated with the winding cavity.

Further, the second positioning structure comprises a fourth clamping groove buckled in the middle of the insulating sleeve and a positioning edge arranged relative to the inner contour of the terminal cavity.

Further, a welding matching surface is arranged between the upper seat and the lower seat and is fixed through ultrasonic welding.

Compared with the prior art, the utility model has the advantages of it is following and beneficial effect: 1. the shell is divided into an outer cavity and a sealing cavity by arranging the closed coil skeleton in the shell, and the conductive assembly is arranged in the sealing cavity and is completely filled with pouring sealant to realize sealing, so that the stability and the sealing property of the conductive assembly are ensured, and the transmission part and the conductive part in the tractor are completely separated;

2. the upper seat and the lower seat are closed to form a terminal cavity, one side of the terminal cavity is opened and provided with a glue pouring port, the conductive assembly is initially positioned and installed through a first positioning structure in the terminal cavity, glue is filled and encapsulated through the glue pouring port, the terminal cavity is filled with the pouring glue, the conductive assembly and the first positioning structure are filled, an assembly gap between the terminal cavity is formed, the pouring glue is used for guaranteeing the sealing of the terminal cavity, the position stability of the conductive assembly is improved, the glue pouring port is sealed through a shielding unit after the pouring is completed, the shielding unit is fully contacted with the pouring glue in the terminal cavity, the glue pouring port is further sealed, the expected waterproof grade is achieved, the electrified part and the transmission part of the tractor are completely isolated by adopting a terminal cavity glue pouring mode, the connecting structure between the shielding unit and the terminal cavity is omitted, and the cost is reduced.

Drawings

Fig. 1 is an exploded view of the retractor of the present invention;

fig. 2 is a cross-sectional view of the retractor of the present invention;

fig. 3 is a schematic structural view of the coil bobbin of the present invention;

fig. 4 is a schematic view of the terminal cavity after the shielding unit is removed;

fig. 5 is a schematic structural view of the upper seat of the present invention;

fig. 6 is a schematic structural view of the upper seat at another angle according to the present invention;

fig. 7 is a schematic structural view of the shielding unit of the present invention;

fig. 8 is a schematic view of the shielding unit, the insulating sleeve and the terminal cavity of the present invention;

fig. 9 is a cross-sectional view of the coil bobbin of the present invention;

fig. 10 is a cross-sectional view of the conductive assembly of the present invention;

in the figure: 1. an upper seat; 1.1, winding part;

2. a lower seat;

3. a terminal cavity; 3.1, arc surface; 3.2, a guide port;

4. filling a glue opening; 5. a shielding unit; 6. a winding cavity; 6.1, winding grooves;

7. a conductive component; 7.1, an insulating sleeve; 7.2, plug connectors; 7.21, a fixing piece; 7.22, a main body; 7.3, coil terminals;

8. a first positioning structure; 8.1, a first card slot; 8.2, a second card slot; 8.3, a third card slot;

9. a second positioning structure; 9.1, a fourth card slot; 9.2, positioning edges;

10. a housing; 10.1, an outer cavity; 11. a gear assembly; 12. a coil bobbin; 13. an output gear;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding, and are not used to define any direction or order of limitation.

As shown in fig. 1-8, a waterproof sealing's tractor includes the casing that comprises epitheca and inferior valve, locates coil skeleton, gear assembly and coil pack in the casing, and coil skeleton has annular hollow wire winding position, and coil pack in the coil skeleton forms motor stator, the coil skeleton middle part is equipped with the rotor, is equipped with output gear on the rotor, output gear and gear assembly meshing, wherein, form the exocoel that is used for supplying the gear assembly to arrange between casing and the coil skeleton, be equipped with the sealed chamber that is used for supplying the conducting component holding in the coil skeleton, sealed intracavity is filled with the casting glue to guarantee conducting component's stability and leakproofness, and realize that transmission part and conducting part in the tractor separate completely.

Alternatively, the potting adhesive may be an epoxy resin.

Optionally, plastic packaging can be used for sealing the sealing cavity, and the plastic packaging is preferably in a glue filling mode due to different materials and degrees.

Specifically, conductive component includes binding post and coil winding, the coil winding is connected with binding post, and wherein, the seal chamber includes the terminal cavity and the wire winding chamber that communicate each other, and the wire winding chamber is the annular setting, and coil winding is around locating the wire winding intracavity, and binding post is located the terminal intracavity.

In this embodiment, the coil skeleton includes seat 1 and lower 2, forms winding position 1.1 on seat 1 or lower 2, and coil winding is around locating on the winding position, seat 1 and lower 2 closure constitution terminal cavity 3, binding post are fixed a position in terminal cavity 3.

As a further improvement of this embodiment, the upper seat 1 and the lower seat 2 are closed to form an annular winding cavity 6, the terminal cavity 3 is communicated with the winding cavity 6, the winding part 1.1 is formed in the winding cavity 6, and the wiring terminal also extends into the winding cavity.

Specifically, the terminal cavity 3 is provided with a glue filling opening 4, and the glue filling opening is filled with pouring glue to fill the terminal cavity and the winding cavity.

Wherein, be equipped with in the terminal chamber 3 and be used for supplying the first location structure 8 of conductive component 7 joint in it, just 4 departments of encapsulating are still closed to have one to shield unit 5, fill the encapsulating glue back in terminal chamber 3, and the encapsulating glue seals all side clearances of terminal chamber 3 and the fitting gap between conductive component 7 and the first location structure 8, by shielding 5 closed end chamber 3 of unit to form the integral type structure through encapsulating glue and terminal chamber 3.

Encapsulating mouth 4 matches with 3 cross-sections in terminal chamber, promptly, 3 open settings in one side in terminal chamber shield the unit 5 and be the apron body, just conducting component 7 and location structure expose and arrange encapsulating mouth 4 departments in to the encapsulating glue fully contacts with conducting component 7 and location structure, guarantees the waterproof sealing effect.

Specifically, the encapsulating mouth is seted up in the vertical surface of terminal cavity, and at the encapsulating in-process, coil skeleton is injectd fixedly with the ascending gesture of encapsulating mouth to make terminal cavity and wire winding chamber be vertical intercommunication, thereby fill sealed chamber.

In this embodiment, be equipped with second location structure 9 on shielding unit 5, second location structure 9 cooperates with first location structure 8 and fixes conducting component 7, and shields unit 5 and forms the location through second location structure 9 and terminal chamber 3, realizes shielding unit 5 and terminal chamber 3 and stablizes the cooperation, further guarantees the positional stability of conducting component 7 in terminal chamber 3.

As a further explanation of the terminal cavity 3 and the glue pouring port 4, the glue pouring port 4 is opened at the installation surface of the conductive component 7 so as to make the pouring glue fully contact with the conductive component 7, and the coil framework is always kept in the same posture and fixed in the assembly process and the glue pouring process of the conductive component 7.

It is specific, 3 bottoms of terminal cavity are equipped with circular arc surface 3.1 towards encapsulating mouth 4, conducting component 7 locates circular arc surface 3.1's both sides, through the setting of circular arc surface 3.1, can guide the casting glue to advance towards conducting component 7, guarantees the abundant contact of casting glue and conducting component 7 for the horizontal plane of casting glue keeps in order evenly to rise in the terminal cavity 3, reduces the excessive air gap in terminal cavity 3 of casting glue in the terminal cavity 3, simultaneously, through the relative volume that reduces terminal cavity 3 of circular arc surface 3.1, thereby reduces the casting glue volume.

Specifically, a guide opening 3.2 is formed between the terminal cavity 3 and the winding cavity 6, the guide opening 3.2 is located at the highest horizontal position of the bottom of the terminal cavity 3, and preferably, the guide opening 3.2 is located in the middle of the terminal cavity 3 and is located at the highest position of the circular arc surface 3.1.

Specifically, the entrance in wire winding chamber 6 still is equipped with wire winding groove 6.1, wire winding groove 6.1 adjoins terminal cavity 3 sets up, just conductive component 7 has the coil terminal 7.3 that stretches into in wire winding chamber 6, wire winding groove 6.1 sets up with coil terminal 7.3 relatively, wherein, wire winding groove 6.1 is just to the arc setting of guide mouth 3.2, is equipped with the backplate in one side that wire winding groove 6.1 deviates from guide mouth 3.2, and this backplate should be regarded as a part of wire winding groove 6.1 to supply partial wire to be sealed by potting compound fixed, just wire winding groove 6.1 extends to the tangential position at wire winding position 1.1, so that the wire is around establishing.

As a further explanation of the conductive component 7 and the first positioning structure 8, the conductive component 7 includes an insulating sleeve 7.1 and a plug 7.2 embedded in the terminal cavity 3, that is, the plug 7.2 extends into the winding cavity 6 through the terminal cavity 3, and the first positioning structure 8 has a first positioning portion matched with the plug 7.2 and a second positioning portion matched with the insulating sleeve 7.1.

Wherein, insulating cover 7.1 is interior to be inserted there is electrically conductive silk thread, and plug connector 7.2 includes:

a fixing piece 7.21, wherein the fixing piece 7.21 faces the glue filling opening 4 to form an open part for the conductive silk thread to be placed in;

the main body 7.22 is bent relative to the fixing piece 7.21 and is inserted into the first positioning position in an inserting manner, and optionally, sharp protrusions are arranged on two sides of the main body 7.22, and the sharp protrusions can be in a sawtooth shape to ensure the position stability of the inserting piece 7.2 in the terminal cavity 3;

the coil terminal 7.3 is bent about the main body 7.22 part and is arranged in the same direction as the fixing piece 7.21, a plurality of openings for winding are arranged on the coil terminal 7.3, and the coil terminal 7.3 is fixed after being placed into the first positioning position along with the main body 7.22 part;

specifically, the first positioning structure 8 includes:

the first clamping groove 8.1 is matched with the profile of the insulating sleeve 7.1, the first clamping groove 8.1 is clamped with two end parts of the insulating sleeve 7.1, the second positioning part refers to two transverse ribs formed in the terminal cavity 3, one transverse rib forms the outer wall of the terminal cavity 3, and the first clamping groove 8.1 is arranged on the transverse rib;

the second card slot 8.2 is used for the main body 7.22 of the plug connector 7.2 to be embedded in;

the third card slot 8.3, the coil terminal 7.3 that the third card slot 8.3 supplied plug connector 7.2 slides in, just the opening setting in the bottom of the third card slot 8.3 to make coil terminal 7.3 can get into winding chamber 6, and insulating cover 7.1 and plug connector 7.2 syntropy are injectd to second card slot 8.2 and third card slot 8.3, and simultaneously, second card slot 8.2 constitutes first location position with third card slot 8.3.

As a further explanation of the second positioning member structure, the second positioning member structure 9 includes a fourth engaging groove 9.1 buckled in the middle of the insulating sleeve 7.1, and a positioning edge 9.2 disposed about the inner contour of the terminal cavity 3, wherein a boss is formed at the bottom of the shielding unit 5, the fourth engaging groove 9.1 is formed on the boss, the distance between the two first engaging grooves 8.1 matches the length of the fourth engaging groove 9.1, so as to ensure the positioning of the insulating sleeve 7.1, and in addition, the positioning edge 9.2 can be respectively matched with the inner contours of the terminal cavity 3 portions of the upper seat 1 and the lower seat 2.

Optionally, the positioning edge 9.2 on the shielding unit 5 further presses the potting adhesive in the terminal cavity 3, so that the potting adhesive overflows and connects the shielding unit 5 and the outer edge of the terminal cavity 3.

The working principle is as follows: the conductive component 7 is firstly primarily positioned through the first positioning structure 8 in the terminal cavity 3, and then glue is poured through the glue pouring port 4, the pouring glue uniformly extends through the circular arc surface 3.1 at the bottom of the terminal cavity 3, so that the uniformity of the pouring glue in the terminal cavity 3 is ensured, thereby filling and sealing an assembly gap between the upper seat 1 and the lower seat 2, and the assembly gap of the conductive component 7 on the first positioning structure 8, so that the pouring glue fills the terminal cavity 3 and seals the conductive component 7 at a full angle, thereby achieving an expected waterproof grade, the glue pouring mode of the terminal cavity 3 is adopted, a charged part and a transmission part of the tractor are completely isolated, finally, the glue pouring port 4 is sealed through the shielding unit 5, the position of the conductive component 7 is further limited by the second positioning structure 9 on the shielding unit 5, meanwhile, the positioning edges 9.2 on the peripheral sides of the shielding unit 5 are placed in the terminal cavity 3, thereby extruding the pouring glue to enable the pouring glue to overflow in the terminal cavity 3, thereby further improving the sealing performance of the peripheral side of the terminal cavity 3, in addition, and the terminal cavity is fully provided with the pouring glue pouring port 4, and the terminal cavity is in contact with the opening type, and the terminal cavity is formed with the integrated pouring glue pouring structure.

In the above embodiment, a welding mating surface is arranged between the upper seat 1 and the lower seat 2, and the welding mating surface is fixed by ultrasonic welding.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A waterproof sealing's tractor which characterized in that: the coil assembly comprises a shell (10), and a coil framework (12), a gear assembly (11) and a coil assembly which are arranged in the shell (10), wherein the coil assembly is wound on the coil framework, a rotor is also arranged in the middle of the coil framework, the rotor is connected with an output gear (13), and the output gear (13) is meshed with the gear assembly (11);

form between casing (10) and coil skeleton (12) and be used for supplying outer chamber (10.1) that gear assembly (11) arranged, be equipped with the sealed chamber that is used for supplying conducting component (7) holding in coil skeleton (12), the sealed intracavity is filled there is the casting glue.

2. The waterproof and sealed retractor of claim 1 wherein: coil skeleton (12) are including upper bracket (1) and lower seat (2), upper bracket (1) and lower seat (2) are closed to constitute annular wire winding chamber (6) and intercommunication terminal chamber (3) in wire winding chamber (6), the wire winding chamber constitutes sealed chamber with the terminal chamber.

3. The waterproof and sealed retractor of claim 2 wherein: the terminal cavity (3) is provided with a glue filling opening (4) in an open mode, and a shielding unit (5) is further closed at the glue filling opening (4).

4. The waterproof and sealed retractor of claim 2 wherein: conductive component (7) are including inlaying the binding post of establishing in terminal cavity (3) to and around establishing coil winding in wire winding chamber (6), coil winding is connected with binding post, binding post stretches into in wire winding chamber (6) through terminal cavity (3).

5. The waterproof and sealed retractor of claim 4 wherein: the inner surface of the terminal cavity (3) is provided with an arc surface (3.1) towards the glue filling opening (4), and the wiring terminals are arranged on two sides of the arc surface (3.1).

6. The waterproof and sealed retractor of claim 2 wherein: be formed with guide mouth (3.2) between terminal chamber (3) and wire winding chamber (6), guide mouth (3.2) are located the highest level position of terminal chamber (3) bottom.

7. The waterproof and sealed retractor of claim 4 wherein: binding post includes insulating cover (7.1) and plug connector (7.2), plug connector (7.2) upper end is connected with insulating cover (7.1), plug connector (7.2) lower extreme stretches into in wire winding chamber (6) and is connected with the coil winding, insulating cover (7.1) stretches out terminal cavity (3) set up.

8. The waterproof and sealed retractor of claim 3 wherein: be equipped with in terminal cavity (3) and be used for with binding post complex first location structure (8), just binding post exposes and arranges in irritate jiao kou (4) department.

9. The waterproof and sealed retractor of claim 3 wherein: and a second positioning structure (9) is arranged on the shielding unit (5), and the second positioning structure (9) is matched with the first positioning structure (8) and is used for fixing the wiring terminal.

10. The waterproof and sealed retractor of claim 2 wherein: the upper seat (1) and the lower seat (2) are fixed through ultrasonic welding to be mutually closed to form a sealed cavity.