JPS5818456Y2 - stator assembly - Google Patents

Description

[Detailed description of the invention] This invention relates to coil terminal treatment in a commutator motor and rationalization of wiring to brushes and power supply.

Conventional stator coil terminal processing and connection to other parts are performed using lead wires.

The process of connecting the stator lead wires is shown in FIGS. 1 to 3 as follows.

(1) Step of cutting the lead wire 1 to a predetermined length and peeling off the coating. (2) Peeling off the end of the stator coil 2 and soldering it to one end of the lead wire 1.

Next, the process of wrapping the varnish cloth 3 around this connection terminal and then covering it with the varnish tube 4 (3) The process of tying the lead wire 1 to the stator 6 with hemp thread 5 to fix it (4) The process of wrapping the lead wire 1 for connecting the brush holder Process of soldering terminal 7 to one end The process of connecting the lead wires as described above accounts for approximately 50% of the stator assembly work and relies on manual labor. There is no choice but to do the wiring manually, which is a major obstacle to streamlining assembly.

The purpose of this invention is to enable connections to other parts without using lead wires, and to streamline wiring work in the assembly department.

That is, an insulating block integrally molded with terminals for connection to the power supply and the brush holder is fixed to the stator, and the stator coil is directly connected to one end of the terminal for connection to the power supply and the brush holder. This is what I did.

Further, the terminal for connecting the brush holder utilizes the elasticity of phosphor bronze, and the connection to the brush holder is automatically completed at the same time as the stator is inserted into the housing.

Furthermore, the power supply connection terminal allows for a plug-in connection to the power supply section.

The fourth embodiment of the present invention will be described below with reference to the drawings.
In the drawings to FIG. 7, reference numeral 8 denotes a terminal block integrally molded from an insulating material such as Bakelite, and a bifurcated leg portion 15 is formed at the base of the block to engage the stator 6 across the thick end surface thereof. The upper part is formed as an arm part 18 rising from the leg part 15 with a step part, and includes a high step part 19 and a low step part 20.

A conductor 9 has one end forming a male terminal 10 protruding from the high step 19 of the arm 18 and the other end forming a connecting terminal 11 projecting from the side surface of the arm 18, and is integrally molded in the terminal block 8. ing.

A conductor 12 has one end protruding above the low step 20 of the arm 18 to form a female terminal 13, and the other end protruding from the side surface of the arm 18 to form a connecting terminal 14. It is integrally molded into block 8.

The terminal block 8 is connected to the stator 6 via the forked legs 15.
will be installed on the

After that, a pair of terminals of the stator coil 2, a connecting terminal 11 connected to a pair of male terminals 10 of a terminal block 8,
Connect to the connecting terminal 14 connected to the female terminal 13.

When this stator assembly is inserted into the housing 16, the female terminals 13 of the terminal block 8 are engaged with the brush holder 17, and the male terminals 10 can be connected to a power source (not shown).

In this invention, as mentioned above, a terminal block is attached to the stator, which is made up of an integrally molded male terminal connected to the power supply and a female terminal connected to the brush holder, and the stator coil is directly connected to this terminal block. Therefore, preparatory work for lead wires, connection work, insulation treatment, etc., are not required in the stator assembly work, and the number of man-hours can be significantly reduced.

Additionally, the brush holder connection terminal eliminates the conventional process of connecting the connection terminal to the brush holder after inserting the stator into the housing, and the power supply connection terminal allows for a plug-in connection to the power supply. This results in excellent effects such as automatic assembly and a significant reduction in assembly man-hours.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the stator coil and lead wires, Figure 2 is a perspective view showing the stator coil and lead wires.
The figure is a perspective view showing a connection portion between a coil terminal and a lead wire. FIG. 3 is a perspective view of a conventional stator assembly. FIG. 4 is a perspective view of the terminal block of the present invention. FIG. 5 is a perspective view showing the stator before the terminal block is installed;
FIG. 6 is a perspective view showing the stator after the terminal block is installed;
FIG. 7 is a longitudinal sectional side view showing the state in which the stator assembly is attached to the housing. 2... Stator coil, 6... Stator, 8... Terminal block, 9.12...
・Conductor, 10...Male terminal, 11゜14...
...Connection terminal, 13...Female terminal, 15...
...Legs, 16...Housing, 17...
... Brush holder, 18 ... Arm part, 19.
...High section, 20...Low section.

Claims (1)

[Scope of utility model registration request] A stator assembly mounted in a housing of a commutator motor, the stator assembly having a substantially forked leg portion that engages across a thick end face portion of the stator, and a stepped portion from the leg portion. A male terminal that protrudes outside the housing and is connected to a power source is disposed on the high part of the arm, and a male terminal that is fixed to the housing inside the housing is provided on the low part of the arm. A female terminal is disposed to be securely connected to the brush holder, and connection terminals protruding from both sides of the arm are internally connected to the male and female terminals and connected to the stator coil. Assemble the terminal block by molding the
When the terminal blocks are disposed in pairs on the thick end wall portion of the stator and installed inside the housing, the male terminals protrude outside the housing and overwhelm the external terminals, and the female terminals a stator assembly configured to automatically engage and connect to the brush holder;