JPH0568048B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic switch mainly used in a starter.

[Conventional technology]

In a conventional magnetic switch, a connecting terminal is caulked into a hole in a switch cover using a pipe rivet, and a coil terminal is passed through the hole in the switch cover and connected to the pipe rivet by soldering or welding.

[Problem to be solved by the invention]

However, the above-mentioned conventional method requires separate steps for fixing the connection terminal to the switch cover and connecting the coil terminal, which requires a large number of man-hours and is difficult to automate.

In order to solve the above-mentioned drawbacks, the present invention makes it possible to connect the connecting terminal and the coil terminal and to fix these connecting terminals and the coil terminal to the switch cover at the same time, thereby greatly reducing the number of man-hours and achieving automation. The purpose of this invention is to provide a magnetic switch that enables

[Means to solve the problem]

To achieve the above object, the present invention includes a coil wound around a bobbin, a switch cover having a hole through which the end of the coil passes, and a connection terminal to which the end of the coil is connected, the switch cover having a hole in the switch cover. a cylindrical portion into which the coil terminal is inserted, and a cylindrical portion provided at one end of the cylindrical portion that engages with an engaging portion formed inside the switch cover, and is engaged with an engaging portion formed inside the switch cover, and the cylindrical portion is inserted into the switch cover. a first fixing part that prohibits movement toward the other end of the cylindrical part; a connecting part that is simultaneously formed on the other end of the cylindrical part by deformation and connects the connecting terminal and the coil terminal; and the switch. The present invention provides a magnetic switch characterized in that it is provided with a conductive member having a deformable portion consisting of a second fixing portion that prohibits movement of the cylindrical portion toward the one end side with respect to the cover.

[Effect]

According to the above configuration, the connection terminal and the coil terminal are connected through the connection part of the deformation part, and the conductive member is fixed to the switch cover by the first fixation part and the second fixation part of the deformation part. . Therefore, the connecting terminal and the coil terminal are connected and fixed to the switch cover by the deformed portion.

〔Example〕

The present invention will be described below with reference to embodiments shown in the drawings. 1 to 4 show a first embodiment of the present invention. 1 is a bobbin molded from thermoplastic resin, on which a coil 6 is wound;
passes through a guide portion 1a which is integrally molded and projects in the axial direction from the side end portion of the bobbin 1. Further, the guide part 1a protrudes from the connection part a of the starting terminal (hereinafter referred to as "50 terminal") 5 connected to the starter switch, is inserted into a pipe rivet (conductive member) 3 to be described later, and is attached to the end thereof. has a deformable portion 1b that closes a gap between a coil terminal 4 and a rivet deformable portion 3a, which will be described later. Reference numeral 2 designates a switch cover molded from a thermosetting resin, in which a hole 2a into which the guide portion 1a and the coil terminal 4 are inserted is formed. Further, a battery terminal and a motor terminal are also fixed to this cover 2 with caulking washers, nuts, or the like. The pipe rivet 3 made of a conductor is tightly fitted into the hole 2a of the cover 2, has a flange part (first fixing part) 3c at one end, and a deformed part 3a (second fixing part) by fading at the other end. section) and 3b (connection section). The flange portion 3c engages with a stepped portion (engaging portion) 2b provided at the inner open end of the hole portion 2a of the switch cover 2, and prevents the pipe rivet 3 from moving toward the other end with respect to the switch cover 2. . One deformed portion 3a holds the 50 terminal 5 with the cover 2 to electrically connect the 50 terminal and the pipe rivet, and also holds the switch cover hole 2a via the 50 terminal 5 together with the flange portion 3c. Thus, the 50 terminal 5 is fixed to the switch cover 2, and the pipe rivet 3 itself is fixed to the switch cover 2. The other deformed portion 3b electrically connects the coil terminal 4 and the pipe rivet. The coil terminal 4 is the terminal of a pull-in coil or holding coil 6 wound on the bobbin 1, and there is no coating removal process (mechanical peeling, neoliver, etc.), and the deformed portion 3
At the time of deformation and connection of coil b, the coating is removed by fading, and at this time, the tip of guide portion 1a of bobbin 1 is also melted, and coil end 4 and pipe rivet 3 are electrically connected as shown in FIG. 7 is a coil case.

Furthermore, it is most efficient to deform each deformed part 1b, 3a, 3b at the same time, and the deformed parts 1b, 3a, 3b are deformed and formed using the heat and pressure during feasing for electrical connection. It has a structure.

In the first embodiment described above, since the structure is as described above, the cover 2 and the rivet 3 are in close contact with each other, and the space between the rivet 3 and the coil terminal 4 is protected by the deformed portion 1b of the guy 1a. Since it is completely sealed, it is equivalent to conventional methods such as soldering.

Further, since the fixing of the 50 terminals 5 is carried out at the same time as the connection of the coil terminal 4, the step of fixing the 50 terminals 5 can be omitted.

In addition, since soldering is eliminated and connections are made using fusing, it is possible to eliminate the film removal process and smoke exhaust maintenance, and automation can greatly reduce man-hours. This makes it possible to simultaneously prevent defects in the process due to pain conduction defects.

As described above, according to this embodiment, it is possible to achieve the great effect of simultaneously achieving a large reduction in man-hours and an improvement in quality.

Further, since the coil terminal 4 is completely guided by the resin guide portion 1a and no tensile force is applied to the coil 6 itself, disconnection due to vibration etc. can be prevented at the same time, and improvement in vibration resistance can be expected.

FIG. 5 shows a second embodiment of the invention. This second
This embodiment differs from the first embodiment in that the guide portion 1a of the bobbin 1 is eliminated or the length is shortened, and
A pipe rivet 3 with a closed tip is used, and the rivet 3 is inserted into the hole 2 of the cover 2.
a, and its closing portion protrudes from the end of the cover 2. Then, as shown in Fig. 5a, insert the coil terminal 4 into the pipe rivet 3 to a position outside the cover end, and attach the bi-rivet 3.
By fitting the connecting part 5a of the 50 terminal 5 to the outer periphery of the pipe rivet 3 and fusing welding the end protruding part of the pipe rivet 3 including the coil terminal, the end protruding part of the pipe rivet 3 is fixed as shown in FIG. 5b. Deformed portions 3a and 3b similar to those of the first embodiment are formed. According to this embodiment, the pipe rivet 3 is press-fitted into the hole 2a of the cover 2 and its tip is closed, thereby preventing water from entering the switch through the hole 2a of the cover 2.

FIG. 6 shows a third embodiment of the invention. This third
This embodiment differs from the second embodiment in that a 50 terminal 5 is integrally molded at the tip of the pipe rivet 3.

It should be noted that the welding method is not based on fusing, but any method such as ultrasonic welding, resistance welding, etc. that generates heat capable of forming a deformed part may be used.

Further, in the above embodiment, only the connection of 50 terminals has been described, but it goes without saying that the same applies to the connection of the pull-in coil to the motor terminal.

〔Effect of the invention〕

As described above, the present invention can simultaneously achieve the connection between the connection terminal and the coil terminal and the fixing of the connection terminal and the coil terminal to the switch cover by a single deformation of the deformed portion of the conductive member.
The number of man-hours can be reduced, and manufacturing automation can be facilitated.

[Brief explanation of drawings]

Fig. 1 is a partially sectional front view showing a first embodiment of the device of the present invention, Fig. 2 is a perspective view of the bobbin in the above embodiment, Fig. 3 is an enlarged vertical sectional view of the main part of the above embodiment, and Fig. 4 is a side view in the direction of arrow a in Fig. 3, Fig. 5 a,
b is a longitudinal cross-sectional view showing the state before and after welding of the main part configuration in the second embodiment of the device of the present invention, respectively;
FIGS. 6a, b, and c are a longitudinal cross-sectional view and a right side view after welding, respectively, showing the state of the main parts before and after welding in a third embodiment of the apparatus of the present invention. DESCRIPTION OF SYMBOLS 1... Bobbin, 1a... Guide part, 2... Switch cover, 2a... Hole, step part (engaging part inside the switch cover), 3... Pipe rivet (conductive member), 3a... Deformed part ( second fixed part), 3b
...Deformed part (connection part), 3c...Flange part (first fixed part), 4...Coil terminal, 5...50 terminal (connection terminal), 6...Coil.

Claims (1)

[Claims] 1. A switch cover comprising: a coil wound around a bobbin; a switch cover having a hole through which the end of the coil passes; and a connection terminal to which the end of the coil is connected, the switch cover being inserted into the hole of the switch cover. a cylindrical portion in which the coil terminal is inserted;
a first fixing portion provided on one end of the cylindrical portion and engaging with an engaging portion formed inside the switch cover to prohibit movement of the cylindrical portion toward the other end with respect to the switch cover; a second fixing portion that is simultaneously formed on the other end of the cylindrical portion by deformation and prohibits movement of the cylindrical portion toward the one end with respect to a connecting portion that connects the connecting terminal and the coil terminal and the switch cover; 1. A magnetic switch comprising a conductive member having a deformed portion. 2. The magnetic switch according to claim 1, wherein the tip of the conductive member is closed. 3. The magnetic switch according to claim 1 or 2, wherein the connection terminal is integrally molded at the tip of the conductive member. 4. The magnetic switch according to any one of claims 1 to 3, wherein the deformed portion closes the hole of the switch cover.