JPH0736460Y2 - Motor stator protective cover - Google Patents

Description

TECHNICAL FIELD The present invention relates to a protective cover for a motor stator, and in particular to a motor stator whose winding portion can be easily and neatly covered and lead wires can be easily connected. Regarding protective cover.

Conventional technology Conventionally, in the winding part protruding on both sides of the stator of the motor,
A slightly thicker coating of varnish or resin is used to insulate and protect the windings.

However, in order to uniformly and thickly apply the insulating coating material to the winding portion, it is necessary to apply the varnish or the resin material many times and wait for the drying, which is time-consuming and time-consuming. In some cases, the insulating coating alone does not provide sufficient protection.

Therefore, as a result of various studies, if it is necessary to reliably protect the winding part of the stator, a simple insulating cap should be tied integrally with the winding part with a winding tie string. It was the one I was wearing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and a winding projecting from the outer peripheral side of the stator to the inner peripheral side of a stator of a motor that is not resin-molded on the outer peripheral side is provided. It is a protective cover that covers over, and the protective cover is formed as a concentric double cylinder so as to be able to cover the winding portion, and a reinforcing material is radially provided on the end surface at a predetermined height, Terminal mounting dowels for connecting the ends of the windings and the lead wires are provided on the end surface of the protective cover at predetermined intervals in the radial direction of the protective cover, and at least two or more locations are provided on the end surface of the protective cover. An object of the present invention is to provide a protective cover for a motor stator, which is characterized by being integrally projected.

Function When the protective cover is attached to the winding portion protruding from the end of the stator of the motor of the present invention, the winding can be done by inserting the concentric double cylindrical protective cover into the winding portion. The part can be covered well. The end surface of the protective cover can be prevented from directly abutting the obstacle such as the conveyor by the reinforcing material protruding from the end surface of the protective cover, and the stator can be safely protected by the protective cover. Also, the terminals can be firmly attached with two or more terminal mounting dowels, respectively, and the terminals can be mounted in a predetermined position and direction without turning, and two or more terminals can be protruded to provide a multi-pole or the like. It is possible to easily cope with the terminal connection of the stator of the motor.

Embodiment Hereinafter, the present invention will be described based on an embodiment.

FIG. 1 and the following are embodiments of the present invention. The motor 1 is of a relatively small size, and the windings 3 protruding from both ends of the stator 2 are formed with protective covers 4 attached thereto as shown in FIGS. There is.

The protective cover 4 is made of a heat-resistant synthetic resin material such as PBT resin, FRTP resin, PPO resin, nylon resin, etc., as shown in FIG. 1 and FIG. It is formed into a heavy cylindrical body and is attached in close contact with the windings 3 protruding from both ends of the stator 2 as shown in the figure to insulate and protect the windings 3 and to improve the appearance. It is formed so that it looks good. On the inner portion 5 of the protective cover 4, which is a double-cylindrical body, slightly elongated legs 7 are integrally projected at an angular interval of 120 degrees as shown in FIGS. 2 and 3.
The leg 7 has a trapezoidal cross section as shown in FIG. 4 and is fitted into the slot 8 of the stator 2 as shown in FIG. 1 so that the protective cover 4 can be firmly attached to the stator 2. Also,
On the end face side of the protective cover 4, as shown in FIGS. 1 to 3, connecting portions 9 for connecting the inner portion 5 and the outer portion 6 are radially arranged at regular intervals, and the central portion of the required connecting portion 9 is provided. Reinforcement material 10 is slightly protruded to reinforce. Further, as shown in FIGS. 1 to 3, terminal mounting dowels 11 are provided at a plurality of positions on the connecting portion 9 at predetermined intervals, and the terminal mounting dowels 11 are mounted as shown by a chain line in FIG. Insert the required terminal 12 into the dowel 11 and weld it, wrap the end of the winding 3 around one end of the terminal 12 and connect it, and insert the lead wire 13 into the insertion part of the terminal 12 for electrical connection. I am able to do it. Reference numeral 14 is an opening for leading the lead wire.

Therefore, it is possible to firmly and detachably attach the protective cover to the protruding winding portion on both sides of the stator of the motor through the leg portions, and to insulate and protect the winding portion.
Also, the appearance can be kept clean.

In addition, since the winding part can be installed inside the protective cover, it is possible to save the work of binding the winding part with a thread and fixing it as in the conventional case, and the end part of the winding can be used as a terminal mounting dowel. The lead wire can be easily connected to the attachment terminal.

Although the stator of the motor of the inner rotor has been described above, the same can be applied to the outer rotor.

Further, in the above embodiment, since the motor stator for three phases,
Although three or more terminal mounting dowels are provided on the protective cover to connect the lead wires, a two-phase motor stator may have two or more terminal mounting dowels. Further, the terminal mounting dowels can be provided so as to project in an axially symmetrical manner and can be used for mounting a printed circuit board for controlling a motor.

As described above, according to the present invention, the winding portion of the stator that is not molded can be completely covered with the protective cover, and the end surface of the protective cover can be covered with the reinforcing material protruding from the end surface portion of the protective cover. Direct contact with an obstacle such as a conveyor can be prevented, and the stator can be safely protected by the protective cover. Also, the terminals can be firmly attached with two or more terminal mounting dowels, respectively, and the terminals can be mounted in a predetermined position and direction without turning, and two or more terminals can be protruded to provide multi-pole or the like. It is possible to easily deal with the terminal connection of the stator of the motor, the connection process between the winding wire and the lead wire can be easily performed, and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is a side sectional view of a motor stator according to an embodiment of the present invention with a part thereof omitted, FIG. 2 is an end face portion of the same, FIG. 3 is a side sectional view of a protective cover of the same, and FIG. It is an expanded sectional view of the leg part same as the above. 1 ... Motor, 2 ... Stator, 3 ... Winding, 4 ... Protective cover, 7 ... Leg, 8 ... Slot, 11 ... Dowel for terminal mounting, 12 ... Terminal, 13 ... Lead.

Claims (1)

[Scope of utility model registration request] 1. A protective cover for covering a winding protruding from an end portion of a stator of a motor which is not resin-molded on an outer peripheral portion from the outer peripheral side to the inner peripheral side of the stator, the protective cover being concentric. A terminal for connecting the end portion of the winding and the lead wire while forming a double cylinder so as to be able to cover the winding portion and radially providing a reinforcing material at a predetermined height on the end surface. A motor stator characterized in that mounting dowels are provided on the end surface of the protective cover at a predetermined interval in the radial direction of the protective cover, and at least two or more portions are integrally projected on the end surface of the protective cover. Protective cover.