CN212203024U

CN212203024U - Electromagnet for differential lock

Info

Publication number: CN212203024U
Application number: CN202020685578.6U
Authority: CN
Inventors: 林鸿茂
Original assignee: Xiamen Beckett Electrical And Mechanical Co ltd
Current assignee: Xiamen Beckett Electrical And Mechanical Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-12-22
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses an electro-magnet for differential lock, include: a housing; the electromagnetic assembly is arranged on the inner side of the shell and used for providing power; the electromagnetic component can drive the execution element to move; wherein: when the electromagnetic assembly is electrified, a magnetic field is generated to push the actuating element to one direction to form a closed magnetic circuit, and when the circuit is cut off, the actuating element resets the actuating element through an external spring. The utility model discloses response time is fast, electromagnetic attraction is strong, the good reliability, wearability.

Description

Electromagnet for differential lock

Technical Field

The utility model relates to a differential lock technical field, in particular to an electro-magnet for differential lock.

Background

A differential lock is a locking mechanism mounted on a differential of an automobile. For four-wheel drive vehicles. The function of the device is to improve the passing capacity of the automobile on a bad road, namely when one drive axle of the automobile idles, the differential can be locked quickly, so that the two drive axles become rigid connection. Therefore, most of torque and even all of torque can be transmitted to the non-slip drive axle to generate enough traction force by fully utilizing the adhesive force of the drive axle, so that all wheels of the vehicle can obtain effective power under the off-road condition, and the vehicle can get rid of the trouble and continue to run under the severe condition.

At present, the locking mainly includes air lock, mechanical lock and electric lock, wherein because electric lock has simple structure, installation simple, the low price, the sexual valence relative altitude and is used widely, nevertheless still exist following technical problem in the current electric lock:

1. the electromagnetic lock yoke adopts a laser welding process (two parts are welded together to form the yoke), and the concentricity and the verticality of a product are difficult to control;

2. when the electromagnet is used in oil inside the differential lock, damage often occurs;

3. the friction between the inner hole of the yoke iron and the main rotating shaft is seriously damaged, and the service life is influenced;

4. slow response and weak electromagnetic attraction.

Disclosure of Invention

The utility model provides an electro-magnet for differential lock that response time is fast, electromagnetic attraction is strong, the good reliability, wearability to solve above-mentioned technical problem now.

In order to solve the technical problem, the utility model provides a following technical scheme: an electromagnet for a differential lock, the electromagnet comprising: a housing;

the electromagnetic assembly is arranged on the inner side of the shell and used for providing power; and

the actuating element is movably arranged on the inner side of the shell, and the electromagnetic assembly can drive the actuating element to move;

wherein: when the electromagnetic assembly is electrified, a magnetic field is generated to push the actuating element to one direction to form a closed magnetic circuit, and when the circuit is cut off, the actuating element resets the actuating element through an external spring.

Preferably, the housing includes a yoke and a stationary core; the yoke iron is fixedly connected with the fixed iron core.

Particularly, a through hole of a revolving body is arranged on the yoke iron; the through hole is provided with a layer of coating.

Preferably, the electromagnetic assembly comprises a coil, a bobbin encapsulation, a wire and a connector; the coil is wound on the framework; the framework encapsulation is inserted on the shell and connected with the coil; the lead is inserted into the framework adhesive tape in a sealing manner; the lead wire is soldered to the connector.

Particularly, the framework is provided with a connecting terminal.

Preferably, the actuator comprises a movable iron core and a push rod; the movable iron core and the push rod are coaxially arranged.

Particularly, the movable iron core is a hollow revolving body, and a first step is arranged on the inner side of the hollow revolving body; and a circumferential chamfer is arranged on the movable iron core.

Particularly, the push rod is in a rotary body shape, and a push shoulder is arranged on the push rod; the bottom of the push rod is provided with a first bulge.

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

1) the utility model discloses the skeleton makes a subassembly with the coil through spooling equipment during assembly. And then inserting two ends of the coil into the framework rubber coating, then forming a semi-finished electromagnetic assembly by rubber coating, sleeving the movable iron core on the push rod while manufacturing the electromagnetic assembly, placing the movable iron core on an electric punching machine, and riveting the movable iron core and the push rod into an integral execution element by electric. And finally, arranging the actuating element and the electromagnetic assembly on the yoke, and then placing the fixed iron core into the yoke for riveting a finished product. And connecting the wire and the connector with the riveted finished product after finishing. When the circuit is used, circuit current enters the coil through the conducting wire, the coil generates a magnetic field by the input of the current, the actuating element is pushed in one direction, the magnetic field can form a loop (a magnetic circuit) and moves from the actuating element to the fixed iron core, the fixed iron core moves to the yoke, and the yoke moves to the actuating element. When the current is cut off, the actuating element is returned by an external spring. Mainly through controlling the current, produce the magnetic field and control the actuating element to promote, push to the locking mechanism by the push rod. The whole electromagnet has the advantages of quick response time, strong electromagnetic attraction force and long service life.

2) The framework and the enameled wire are made of temperature-resistant and oil-resistant materials, and are formed by coating rubber, so that the reliability of the electromagnet in the oil inside the differential lock is ensured.

3) The inner hole of the yoke is sprayed with molybdenum disulfide, so that the wear resistance of the main rotating shaft to the matching of the electromagnet is improved, and the service life of the electromagnet is prolonged.

4) The utility model discloses what the casing adopted is that integration processing (come out by a parts machining) to through the riveting shaping, can ensure product concentricity and the straightness's that hangs down requirement. Therefore, the problem that the concentricity and the verticality of a product cannot be precisely controlled due to a laser welding process (welding two parts together to form the yoke) adopted by the traditional electromagnetic lock yoke can be effectively solved, and the product quality is inconsistent. In addition, the integrated process is adopted, so that the production cost (relative to laser welding) can be reduced, and the laser welding device is suitable for popularization and use.

Drawings

Fig. 1 is a front view of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention.

Description of reference numerals: the electromagnetic component comprises a shell 1, an electromagnetic component 2, an actuator 3, a yoke 11, a fixed iron core 12, a coil 21, a framework 22, a framework encapsulation 23, a lead wire 24, a connector 25, a movable iron core 31, a push rod 32, a through hole 111, a coating 112, a first step 311, a circumferential chamfer 312, a push shoulder 321 and a first protruding part 322.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 2: the present embodiment provides an electromagnet for a differential lock, comprising: a housing 1, an electromagnetic assembly 2 and an actuator 3. Wherein the housing 1 serves primarily as a support for the magnet assembly 2 and the actuator 3. The electromagnetic assembly 2 is arranged inside the shell 1 and used for being connected with a power supply to generate a magnetic field to provide power. The actuating element can be movably arranged on the inner side of the shell 1, and the electromagnetic component 2 can drive the actuating element 3 to move. Specifically, when the electromagnetic assembly 2 is powered on, the electromagnetic assembly 2 immediately generates a magnetic field at the moment, and the actuating element 3 is pushed in one direction, so that the magnetic field forms a closed magnetic circuit to further push the main rotating shaft to be locked, otherwise, when the circuit is cut off, the actuating element 3 resets the main rotating shaft through an external spring, namely, the main rotating shaft resets the whole process, the operation is simple, and the response speed is high. The housing 1, the magnet assembly 2 and the actuator 3 will be explained in detail below.

On the basis of the above embodiment, the housing 1 includes the yoke 11 and the fixed core 12; yoke 11 with fixed iron core 12 fixed connection, wherein yoke 11 with fixed iron core 12 directly encloses into one and holds the cavity, and electromagnetic component 2 sets up and holds in the cavity. Specifically, the yoke 11 is made of a metal product, passes through a hot pier, is sequentially subjected to punch forming through a punch press, and is subjected to finish turning through a lathe to form a first magnetic conducting component; the fixed iron core 12 is machined into a second magnetic conducting component through a punch after being machined through a lathe; and then riveting the processed yoke iron 11 and the fixed iron core 12 to complete the construction of the shell 1. By adopting the above technique, the utility model discloses what the casing adopted is that the integration is processed (come out by a parts machining) to through the riveting shaping, can ensure product concentricity and the straightness's that hangs down requirement. Therefore, the problem that the concentricity and the verticality of a product cannot be precisely controlled due to a laser welding process (welding two parts together to form the yoke) adopted by the traditional electromagnetic lock yoke can be effectively solved, and the product quality is inconsistent. In addition, the production cost can be reduced by adopting an integrated process (compared with laser welding). Is suitable for popularization and application.

On the basis of the above embodiment, the yoke 11 is provided with a revolving body through hole 111; a coating 112 (molybdenum disulfide) is provided on the through hole 111. The utility model discloses, through spraying molybdenum disulfide on through-hole 111, increased the life of main axis of rotation to electro-magnet complex wearability, improvement electro-magnet.

On the basis of the above embodiment, the electromagnetic assembly 2 includes the coil 21, the bobbin 22, the bobbin encapsulation 23, the wire 24, and the connector 25. The coil 21 (wherein the number of turns is at least 260T) is wound on the bobbin 22; the framework rubber coating 23 is inserted on the shell 1 and connected with the coil 21; the lead 24 is hermetically inserted on the framework rubber coating 23; the lead wires 24 are soldered to the connector 25. Specifically, the method comprises the following steps: in the embodiment, the coil 21 is an enameled wire, and is wound into an assembly coil by a winding machine, and terminals are welded at two ends of the enameled wire; and the skeleton rubber coating 23 is formed by injection molding, and two connecting terminals are arranged on the skeleton rubber coating 23, one is used for connecting the coil 21, and the other is used for connecting the lead 24. The lead 24 is made of oil-resistant, high-temperature-resistant and corrosion-resistant UL3326 wire, and terminals are welded at two ends, one of the terminals is used for inserting the skeleton rubber coating 23, and the other terminal is used for the connector 25. Adopt above-mentioned technique, the utility model discloses skeleton and enameled wire adopt temperature resistant and resistant oily material, glue through the outsourcing and take shape, have ensured the reliability that the electro-magnet used in the inside fluid of differential lock.

On the basis of the above embodiment, the actuator 3 includes the movable iron core 31 and the push rod 32; the movable iron core 31 and the push rod 32 are coaxially arranged, the movable iron core 31 is sleeved on the push rod 32, specifically, the movable iron core 31 is sleeved on the push rod 32 during assembly, the push rod 32 is placed on an electric punching machine, and the movable iron core 3 and the push rod 32 are riveted into a whole through electric operation. The concentricity and the verticality of the product are effectively guaranteed.

In addition to the above embodiments, the movable iron core 31 is a hollow rotary body, and a first step 311 is provided inside the hollow rotary body; the movable iron core 31 is provided with a circumferential chamfer 312, and the chamfer design is adopted, so that the instant accurate movement of the movable iron core 31 can be quickly realized at the instant of power-on.

On the basis of the above embodiment, the push rod 32 is in a shape of a rotary body, and a push shoulder 321 is arranged on the push rod 32; the bottom of the push rod 32 is provided with a first convex part 322.

In summary, the following steps: the utility model discloses skeleton 22 makes a subassembly with coil 21 through spooling equipment during assembly. Then, two ends of the coil 21 are inserted into the framework encapsulation 23, then an assembly of the semi-finished electromagnetic assembly 2 is formed through encapsulation, the movable iron core 31 is sleeved on the push rod 32 while the electromagnetic assembly 2 is manufactured, then the movable iron core is placed on an electric punching machine, and the movable iron core 3 and the push rod 32 are riveted into an integral actuator 3 through electric power. Finally, the actuator 3 and the electromagnetic assembly 2 are mounted on the yoke 11, and then the fixed iron core 12 is placed in the yoke 11 for final product riveting. After completion, the wire 24 and connector 25 are connected to the riveted product. When the circuit is used, the current enters the coil 21 through the lead 24, the coil 21 generates a magnetic field by inputting the current, the actuating element 3 is pushed to one direction, the magnetic field forms a loop (a magnetic circuit) and is led to the fixed iron core 12 from the actuating element 3, the fixed iron core 12 is led to the yoke 11, and the yoke 11 is led to the actuating element 3. When the current is cut off, the actuating element 3 is returned by an external spring. Mainly through controlling the current, produce the magnetic field and control the actuator 3 to push, push to the locking mechanism by the push rod 32. The whole electromagnet has the advantages of quick response time, strong electromagnetic attraction force and long service life.

It should be finally noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, it should be understood by those skilled in the art that after reading the present specification, the technical personnel can still modify or equivalently replace the specific embodiments of the present invention, but these modifications or changes do not depart from the scope of the claims of the present application.

Claims

1. An electromagnet for a differential lock, the electromagnet comprising:

a housing (1);

the electromagnetic assembly (2) is arranged on the inner side of the shell (1) and used for providing power; and

the actuating element (3) is movably arranged on the inner side of the shell (1), and the electromagnetic component (2) can drive the actuating element (3) to move;

wherein: when the electromagnetic component (2) is electrified, a magnetic field is generated to push the actuating element (3) to one direction to form a closed magnetic circuit, and when the circuit is cut off, the actuating element (3) resets the actuating element through an external spring.

2. Electromagnet for a differential lock according to claim 1, characterized in that the housing (1) comprises a yoke (11) and a stationary core (12); the yoke iron (11) is fixedly connected with the fixed iron core (12).

3. An electromagnet for a differential lock according to claim 2, characterized in that the yoke (11) is provided with a through hole (111) of revolution; and a coating (112) is arranged on the through hole (111).

4. An electromagnet for a differential lock according to claim 1, characterized in that the electromagnetic assembly (2) comprises a coil (21), a bobbin (22), a bobbin encapsulation (23), a wire (24) and a connector (25); the coil (21) is wound on the framework (22); the framework encapsulation (23) is inserted on the shell (1) and is connected with the coil (21); the lead (24) is hermetically inserted on the framework encapsulation (23); the lead wire (24) is soldered to the connector (25).

5. An electromagnet for a differential lock as claimed in claim 4, wherein the skeleton rubber coating (23) is provided with a connection terminal.

6. Electromagnet for a differential lock according to claim 1, characterized in that the actuator (3) comprises a movable iron core (31) and a push rod (32); the movable iron core (31) and the push rod (32) are coaxially arranged.

7. Electromagnet for a differential lock according to claim 6, characterized in that the movable iron core (31) is a hollow solid of revolution, inside which a first step (311) is provided; the movable iron core (31) is provided with a circumferential chamfer.

8. The electromagnet for a differential lock according to claim 6, characterized in that the push rod (32) is in the shape of a solid of revolution, the push rod (32) being provided with a push shoulder; the bottom of the push rod (32) is provided with a first convex part.