CN106230177A - Stepping motor - Google Patents

Abstract

The invention discloses a stepping motor, which comprises: a housing; a stator mounted on an inner wall of the housing; a rotor rotatably supported on the housing and passing through the stator; a terminal group disposed on an outer wall of the housing and electrically connected with the stator. The invention can avoid the phenomenon of stator connecting wire disconnection.

Description

stepper motor

technical field

The invention relates to a stepping motor.

Background technique

At present, the stator in the existing stepping motor is led out of the housing through electric wires, and the electric wires are electrically connected to the coils on the stator. When this kind of motor is manufactured, the wires are first electrically connected to the stator, and then plastic molding is performed to form a housing. Since the temperature of the plastic sealing mold is above 130°C and needs to be maintained for 3 to 5 minutes, it is necessary to use high temperature resistant wires. Since the electric wires are directly injected into the plastic packaging material, the electric wires are bent at the connection between the motor and the plastic packaging material, which may easily cause the wires to break. The usual disconnection rate is between 5 and 10%. Moreover, according to different customers, the required wires and connectors are inconsistent, and various plastic-sealed stators need to be injected, which causes inconvenience to the management of parts.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a stepping motor, which can avoid the disconnection of the stator connecting wire.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a stepper motor, which includes:

case;

a stator mounted on the inner wall of the housing;

a rotor rotatably supported on the housing and passing through the stator;

A connection terminal group, the connection terminal group is arranged on the outer wall of the casing, and the connection terminal group is electrically connected to the stator.

Further, in order to make it possible to count the number of rotor rotations, a rotor rotation number counting device is also provided in the housing, and the rotor rotation number counting device includes a magnetic ring and a Hall sensor that cooperate with each other, and the magnetic ring is installed on the On the shaft of the rotor, the signal output end of the Hall sensor is connected to the terminal group.

Further, the terminal set includes a base and metal pins arranged in the base, and the base is electrically connected with the stator.

Further, both ends of the rotor are rotatably supported on the housing through bearings.

After adopting the above-mentioned technical scheme, the stepping motor of the present invention, its wiring terminal group is electrically connected with the stator, and then just connects with the wiring terminal with common electric wire or plug-in piece, supplies power for the stator, has avoided the electric wire by arranging the wiring terminal Direct injection molding can use ordinary normal temperature wires, which reduces the cost and avoids the risk of wire breakage; at the same time, the stator with terminal block can be matched with various wires, which improves the versatility and reduces the cost of processing and management; In addition, the Hall sensor is built into the motor, replacing the traditional design of separating the motor body and signal parts.

Description of drawings

Fig. 1 is a structural schematic diagram of a stepping motor of the present invention.

detailed description

In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

As shown in Figure 1, a stepper motor, it includes:

shell 1;

Stator 2, the stator 2 is installed on the inner wall of the housing 1;

a rotor 3, which is rotatably supported on the housing 1, and which passes through the stator 2;

The connection terminal group 4 , the connection terminal group 4 is arranged on the outer wall of the housing 1 , and the connection terminal group 4 is electrically connected to the stator 2 .

As shown in Figure 1, a rotor rotation number counting device is also provided in the housing 1, and the rotor rotation number counting device includes a magnetic ring and a Hall sensor 5 that cooperate with each other, and the magnetic ring is installed on the On the shaft of the rotor 3 , the signal output end of the Hall sensor 5 is connected to the terminal block 4 .

As shown in FIG. 1 , the terminal set 4 includes a base 41 and a metal pin 42 disposed in the base 41 , and the base 41 is electrically connected to the stator 2 .

As shown in FIG. 1 , both ends of the rotor 3 are rotatably supported on the casing 1 through bearings.

Connect the metal pin 42 to the wire to energize the stator 2. There are many specific connection methods. The metal pin 42 can be directly connected to the wire, or can be connected to the terminals of the terminal group 4 through a connector. The shape and size of the connector match the connection terminals of the connection terminal 4 .

The working principle of the present invention is as follows:

In the stepping motor of the present invention, its connecting terminal group 4 is electrically connected with the stator 2, and then it is connected with the connecting terminals with common electric wires or connectors to supply power for the stator. Ordinary normal temperature electric wires reduce the cost and avoid the danger of wire breakage; at the same time, the stator with terminal group 4 can be matched with various electric wires, which improves the versatility and reduces the cost of processing and management; in addition, Hall The sensor is built into the motor, replacing the traditional design of separating the motor body and signal parts.

The specific embodiments described above have further described the technical problems, technical solutions and beneficial effects solved by the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Inventions, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. a motor, it is characterised in that: it includes:

Housing (1)；

Stator (2), described stator (2) is arranged on the inwall of housing (1)；

Rotor (3), described rotor (3) can be rotated to support on housing (1), and described rotor (3) is through described stator (2)；

Terminals subgroup (4), described terminals subgroup (4) is arranged on the outer wall of housing (1), and described terminals subgroup (4) electrically connect with stator (2).

Motor the most according to claim 1, it is characterised in that: described housing is additionally provided with rotor turning collar in (1) Counting number device, described rotor turning collar counting number device includes magnet ring and Hall element (5), the described magnet ring cooperated Being arranged on the axle of described rotor (3), the signal output part of described Hall element (5) accesses in terminals subgroup (4).

Motor the most according to claim 1, it is characterised in that: described terminals subgroup (4) include pedestal (41) and The metal needle (42) being arranged in pedestal (41), described pedestal (41) electrically connects with described stator (2).

Motor the most according to claim 1, it is characterised in that: the both ends of described rotor (3) can be revolved by bearing It is bearing on housing (1) with turning.