JPH09298857A - Motor terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts to be used for simplified assembling work by inserting a terminal board where a lead wire is assembled into the terminal of a motor for soldering work. SOLUTION: A terminal board 2 is inserted in the terminal 3 of a motor 1, and a pressure-connection terminal 8 to which a lead wire is connected is connected to a terminal. The stepped part 5A of an opening 5 is disposed at the top surface of the terminal board 2 assembled in the motor 1, a groove 7 is disposed on its bottom side, and a lead wire 4 is fitted in the groove 7. Therefore, soldering is conducted for the opening 5 easily. The lead wire 4 is on the bottom side, therefore, the outer periphery of the motor 1 becomes available as a shield, and it is possible to protect the lad wire 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device for a motor, and more particularly to a terminal device for a motor which simplifies the connection of lead wires connected to the terminals of the motor.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional motor terminal assembly. Four terminals 106 are projected on the outer peripheral surface of the motor 1. The substrate 102 is formed of a rectangular thin plate and has four solid openings at positions corresponding to the terminals 106 of the motor. A connector 103 is attached to the other end of the board 102, and the terminal 107 and the periphery of the opening are provided with the copper foil pattern 10.
Wiring is connected by 8. The connector 103 and the connector 105 are connected by a lead wire 104. The terminal 106 is an opening (not shown) in the substrate 102.
And is soldered to the board pattern 108. In this way, the terminal 106 of the motor 101 is connected to the substrate 102,
It is connected to an external circuit via the connector 108, the lead wire 104, and the connector 105.

[0003]

However, it is said that the terminal device for connecting the terminal of the motor to the external circuit in the conventional example requires the substrate 106 and the two connectors 103 and 105, and the number of parts is large. Have a problem. Further, since the number of these parts is large, there is a problem that the number of assembling steps also increases, which in turn leads to an increase in cost.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a motor terminal device having a small number of parts, a simple structure, and easy assembly.

[0005]

According to a first aspect of the present invention, there is provided a terminal device for a motor according to the present invention. Lead wires are connected to a plurality of motor terminals projecting from the outer periphery of a cylindrical motor. A terminal device for a motor, comprising: a rectangular plate-shaped terminal plate; and a lead wire having a crimp terminal fitting attached to one end thereof, and an opening through which the motor terminal is inserted near one end side of the terminal plate. A groove is formed in which the lead wire from the opening of the terminal plate to the other end of the terminal plate is embedded, the crimp terminal fitting is in the opening, and the lead wire is in the groove. It is fitted in, the terminal plate is inserted into a plurality of motor terminals of the motor, and the motor terminals and the crimp terminals are soldered.

According to the first aspect of the invention, as a terminal device for a motor, it is sufficient to insert a terminal plate having a lead wire into a terminal of the motor and solder the terminal plate. The number of parts can be reduced as compared with, and the assembling work can be simplified. According to a second aspect of the present invention, the crimp terminal includes a crimp portion to which the lead wire is crimped and a terminal portion having a hole into which the motor terminal is inserted. According to the invention of claim 2, it is sufficient to crimp a crimp terminal having a hole portion to one end of the lead wire, and to integrate the crimp terminal with the terminal board by a simple operation of fitting and assembling into the terminal board. Can be done.

According to a third aspect of the present invention, the opening has a substantially cylindrical shape, and a step portion into which the terminal portion is fitted and fixed is formed in a position near the surface side of the terminal plate inside the cylinder. According to the invention of claim 3, when the terminal plate is soldered to the motor terminal, the terminal portion of the crimp terminal is fixed by the step portion, so that the soldering can be performed easily and reliably.

According to a fourth aspect of the present invention, the groove is provided with first and second inner walls facing each other on one and the other inner walls of the groove for pressing the lead wire, respectively.
And a second hook are formed, and the first and second hooks are arranged in the staggered order in a spaced manner in the lead wire direction. According to the invention of claim 4, the lead wire holding hooks are staggered on the inner walls facing each other, that is,
Since they are sequentially arranged in a staggered manner in the length direction of the lead wire, the width of the groove can be reduced, and thus the size of the terminal plate in the direction perpendicular to the direction of the lead wire can be reduced. Also, the lead wire can be securely pressed, and it can be prevented from jumping out of the groove.

According to a fifth aspect of the present invention, the stepped portion is formed on a side that is an upper surface of the terminal plate when the terminal plate is inserted into a terminal of the motor, and the groove is a lower surface side of the terminal plate. It is formed on the surface. According to the invention of claim 5, since the step portion is the upper surface of the terminal plate, the soldering work is easy, and the lead wire insertion groove is the lower surface of the terminal plate. Therefore, the lead wire can be protected.

According to a sixth aspect of the present invention, the terminal plate is formed by resin molding. According to the invention of claim 6, since the terminal board is molded with resin, the openings, steps, grooves, hooks and the like are formed in a molding die, so that a large number of terminal boards having the same shape can be easily manufactured. Can be produced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a motor terminal device according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an embodiment of the present invention. The motor 1 is, for example, a stepping motor. Four terminals 3 for supplying rotation driving power to the windings of the motor are fixedly installed at predetermined positions on the outer peripheral surface of the cylindrical stepping motor 1. Although the terminal plate 2 will be described in detail later, the terminal 3 is inserted into the opening 5 and soldered to the terminal crimped to the end portion of the lead wire 4, and the both are electromechanically connected.

Next, the structure of the terminal board 2 will be described with reference to FIG. FIG. 1A shows the upper surface in a state where the terminal plate 2 is attached and fixed to the motor, which is called a plan view.
FIG. 3B is a sectional view taken along the line AA in the plan view. FIG. 3C shows a bottom view of the terminal board 2. FIG. 3D shows a right side view of the terminal board. The opening 5 is formed in a cylindrical shape, and four openings 5 are provided. On the inner side surface of the cylindrical opening 5, a step portion 5A having a smaller diameter than the direct system of the opening 5 is formed. The depth dimension from the upper surface of the step portion 5A is formed to be slightly smaller than the sum of the thickness dimension of the terminal portion of the crimp terminal described later and the soldering height dimension at which the terminal 3 and the terminal portion are soldered. . Specifically, it has a dimension of about 1 mm.

FIG. 4 shows a state in which the crimp terminal 8 is crimped onto the end of the lead wire 4 and the crimp terminal 8 is incorporated in the groove 7 and the opening 5 of the terminal plate 2. 4A shows a bottom view thereof, and FIG. 4B shows a cross-sectional view taken along the line BB of FIG. 4A. In FIGS. 3 and 4, a first hook 7A for pressing and fixing the lead wire 4 is formed on one inner wall of the groove 7 facing each other, and a second hook 7B is formed on the other inner wall. The hooks 7A and 7B are arranged in a staggered pattern at intervals of about 2 mm along the length direction of the lead wire 4. Such hooks 7A, 7
With the arrangement configuration of B, the lead wire can be securely held in the groove. Further, the width of the groove can be made smaller and the shape dimension in the lateral direction of the terminal plate can be made smaller than that of the configuration in which the hooks are arranged at the same facing position.

The metal crimp terminal crimped to the end of the lead wire 4 is crimped to the lead wire 4 by crimping.
A and a terminal portion 8B having a circular flat plate shape having a circular hole into which the terminal 3 is inserted at the tip side thereof. The diameter of the opening 5 is 3φ and the terminal portion 8B of the crimp terminal 8 is
Has an outer diameter of 2.5φ, and the inner diameter of the step portion of the opening 5 is semicircular, and the inner diameter is 1.5φ.

The terminal board 2 is formed in the above-mentioned shape, but these shapes are formed by resin molding using a molding die. Therefore, it is possible to easily mass-produce the terminal boards having the same shape.

FIG. 2 is a partially broken assembly view showing a state in which the terminal plate 2 is inserted into the terminal 3 of the motor 1 and the crimp terminal 8 crimped to the lead wire is connected to the terminal. The step portion 5A of the opening 5 is arranged on the upper surface of the terminal plate 2 assembled to the motor 1, the groove 7 is arranged on the lower surface side, and the lead wire 4 is fitted in the groove. Therefore, soldering to the opening 5 is easy, and since the lead wire 4 is on the lower surface side, the outer peripheral surface of the motor 1 serves as a shield and the lead wire 4 can be protected. The holes 6 formed on the upper surface of the terminal plate 2 are die-cutting holes for resin molding the hooks 7A and 7B.

[0017]

According to the invention of claim 1, as a terminal device for a motor, it is sufficient to insert a terminal plate incorporating a lead wire into a terminal of the motor and perform soldering. The number of parts can be reduced compared to the conventional one, and the assembly work can be simplified.

According to the second aspect of the present invention, it is sufficient to crimp a crimp terminal having a hole in the terminal portion to one end of the lead wire, and to integrate the crimp terminal into the terminal board by a simple operation. You can

According to the invention of claim 3, when the terminal plate is soldered to the motor terminal, since the terminal portion of the crimp terminal is fixed by the step portion, the soldering is easy and reliable. I can. According to the invention of claim 4, the lead wire holding hooks are staggered on the inner walls facing each other, that is,
Since they are sequentially arranged in a staggered manner in the length direction of the lead wire, the width of the groove can be reduced, and thus the size of the terminal plate in the direction perpendicular to the direction of the lead wire can be reduced. In addition, the lead wire can be securely pressed, and it can be prevented from protruding from the groove and can be protected.

According to the invention of claim 5, since it is the upper surface of the stepped terminal plate, the soldering work is easy, and since the lead wire insertion groove is the lower surface of the terminal plate, the upper surface side of the terminal plate. Due to the molding resin, the lead wire can be protected. According to the invention of claim 6, since the terminal board is molded with resin, the openings, steps, grooves, hooks and the like are formed in a molding die, so that a large number of terminal boards having the same shape can be easily manufactured. Can be produced.

[Brief description of drawings]

FIG. 1 is a perspective view of a terminal device for a motor according to an embodiment of the present invention.

FIG. 2 is a partially broken assembly view of a motor terminal device according to an embodiment of the present invention.

FIG. 3 is a structural diagram of a terminal board applied to the present invention.

FIG. 4 is an assembly diagram of a lead wire with respect to a terminal plate.

FIG. 5 is a perspective view of a conventional motor terminal device.

[Explanation of symbols]

 1 Motor 2 Terminal Board 3 Motor Terminal 4 Lead Wire 5 Opening 5A Step 6 Hole 7 Groove 7A, 7B Hook 8 Crimp Terminal 8A Crimp Section 8B Crimp Terminal

Claims (6)

[Claims] 1. A terminal device for a motor in which lead wires are connected to a plurality of motor terminals protruding from the outer periphery of a cylindrical motor, wherein a rectangular plate-shaped terminal plate and a crimping terminal metal fitting are attached to one end. An opening through which the motor terminal is inserted is formed in the vicinity of one end side of the terminal plate, and the lead wire from the opening of the terminal plate to the other end side end of the terminal plate is embedded. Groove is formed, the crimp terminal fitting is fitted in the opening, and the lead wire is fitted in the groove. The terminal plate is inserted into a plurality of motor terminals of the motor, and the motor terminal and the crimp A terminal device for a motor, characterized in that the terminals are soldered. 2. The motor terminal device according to claim 1, wherein the crimp terminal includes a crimp portion to which the lead wire is crimped and a terminal portion having a hole into which the motor terminal is inserted. 3. The motor terminal according to claim 1, wherein the opening has a substantially cylindrical shape, and a step portion into which the terminal portion is fitted and fixed is formed at a position near the surface of the terminal plate inside the cylinder. apparatus. 4. The groove is formed with first and second hooks for pressing the lead wire respectively on one and the other inner walls of the groove facing each other, and the first and second hooks are the lead wire. 2. The motor terminal device according to claim 1, wherein the motor terminal device is separated from each other in a direction and sequentially arranged alternately. 5. The step portion is formed on a side which is an upper surface of the terminal plate when the terminal plate is inserted into a terminal of the motor, and the groove is formed on a surface which is a lower surface side of the terminal plate. The terminal device for a motor according to claim 3, wherein: 6. The motor terminal device according to claim 3, wherein the terminal plate is formed by resin molding.