JPS6043636B2 - Terminal block manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a terminal block in which a plurality of conductive terminals that are not in contact with each other are sandwiched between a pair of insulators.

For example, vacuum cleaners and other electrical equipment incorporate terminal blocks for making connections between various circuit components.

As a terminal block that can be used for such purposes, 1
There is a type of terminal block in which a plurality of conductive terminals are sandwiched between a pair of insulators without contacting each other, but in this type of terminal block, the positional relationship of each terminal must be set accurately. For this reason, in the past, some kind of positioning means was used for each terminal, such as providing a positioning hole on the terminal side and a positioning protrusion on the insulator side and fitting these to position each terminal. It is inefficient and troublesome to assemble each terminal while positioning it with respect to the insulator.Especially when each terminal has a different shape, it is necessary to pay attention to their arrangement, which reduces assembly efficiency. There was a problem that caused further decline.

Furthermore, manufacturing a plurality of conductive terminals as separate parts is inefficient in terms of part processing, and is also a factor in high costs. The present invention was made based on the above circumstances, and its purpose is to manufacture a terminal block in which a plurality of conductive terminals that are not in contact with each other are sandwiched between a pair of insulators.
The object of the present invention is to efficiently manufacture parts, especially a plurality of conductive terminals, improve assembly efficiency, reduce the cost of terminal blocks, and avoid compromising safety.

Hereinafter, the manufacturing method of the present invention will be explained based on an embodiment shown as a manufacturing method of a terminal block to be incorporated into a vacuum cleaner.

FIG. 1 shows a schematic configuration of the entire vacuum cleaner, and the case portion of this vacuum cleaner can be divided into front and rear parts along a dividing plane A.

The left side of the dividing plane A is the dust suction case 1, and the right side is the motor storage case 2. The front end of the dust suction case 1 has a dust suction port 3 to which a dust suction hose is connected, and the upper part of the motor storage case 2 has a dust suction port 3 to which a dust suction hose is connected. A handle 4 for carrying is provided, and an exhaust port 5 in the form of a vertically long slit is provided at the rear end of the motor storage case 2. Furthermore, the bottom of the dust suction case 1 has casters 6 for changing direction, and a motor storage case 2.
Wheels 7 for movement are attached to the bottom of each. A filter (not shown) is housed inside the dust suction case 1.
An intake fan 8 and a motor 9 for rotationally driving the intake fan 8 are housed inside the motor storage case 2, with the rotational axis thereof oriented in the horizontal (back and forth) direction.

Reference numerals 10, 11, and 12 are support plates formed inside the motor storage case 2 and integrally with the case 2, and support the intake fan 8.
The fan case of the motor 9 and the motor case of the motor 9 are integrally supported by these support plates via vibration isolating members 13 and 14.

Support plate 1 formed along dividing plane A among the above support plates
0 is provided with a relatively large-diameter vent 15 in the center, and the above-mentioned intake fan is inserted into this vent 15. 8 are facing each other. Further, the motor 9 is located in front of the exhaust port 5, and the exhaust port 5 is closed by a filter 16 made of foamed resin attached to the inner surface of the case 2. 17 is a cylindrical sound insulating member surrounding the outer periphery of the motor 9.

A reel shaft 19 that supports a cord reel 18 is vertically mounted between the support plate 12 located below the motor 9 and the intake fan 8 and the bottom plate of the motor storage case 2.

The cord reel 18 is housed in a space below the lower flange, and is always urged by a Z-spring 20 in a direction to wind up the power supply cord 21. The cord 21 is connected to a pull-out hole 2 formed at the bottom of the rear end of the motor storage case 2.
2 to the outside and connected to an AC power source. A gear 23 is formed around the upper flange of the cord reel 18 . 24 is the gear 23 mentioned above.
The shaft 25 of this gear 24 is supported by the support plate 10 via a bearing 26.

The shaft 25 is connected to a dust removal device installed in the dust suction case 1 via a coupling (not shown), and the rotation of the cord reel 18 is transmitted to the dust removal device to prevent clogging of the filter. It's becoming like that. Reference numeral 27 denotes a brake release lever rotatably mounted on the support plate 12, and the rotating end of the lever 27 is led out to the outside through a horizontally long through hole 28 provided below the exhaust port 5. .

This lever 27 is a brake for the cord reel 18 (
(not shown), which is always biased in the counter-operation direction, and is configured to release the brake by rotating it against the biasing force. ing. In the figure, 29 is a terminal block according to the manufacturing method of the present invention, which is attached to the support plate 11, and each terminal 30, 31, 32, 33 of this terminal block 29 has a lead wire 34, ... are connected to each other. Various circuit components inside the motor storage case 2 are connected through these reeled wires. 35 indicates a transformer relay attached to the support plate 11.

A method of manufacturing the terminal block 29 will be explained based on FIGS. 2 to 4.

FIG. 2 shows the state before assembly, with reference numeral 36 an insulator substrate, 37 an insulator cover plate, and 38 a fuse housed in a recess 39 formed on the inner surface of the substrate 36.

The conductive terminals 30, 31, 32, and 33 are integrally formed through connecting portions 40a, 40b, and 40c, as shown in the figure, and are punched out at once by, for example, press processing. Each conductive terminal has a positioning hole 41...
・ is provided. On the left and right edges of the insulator substrate 36,
Grooves 42a and 42 into which the notch edge of the support plate 11 is fitted
b is provided, and the connecting portion 40a is provided on the inner surface of the substrate 36.
, 40b, 40c overlap, recesses 43a, 43b.
is formed.

That is, as shown in FIG. 3, the connecting parts 40a and 40b are overlapped in one recess 43a, and the connecting part 40c is overlapped in the other recess 43b. On the other hand, the insulator cover plate 37 has through holes 4 that overlap the respective recesses 43a and 43b of the substrate 36 on the inner side of the circumferential surface of the cover plate 37.
4a, 44b are provided, and these through holes 44a, 44b
The connecting portions 40a, 40b, and 40c can be cut through the connector. In addition, the insulator cover plate 37 includes
Positioning convex portions 4 that fit into each of the positioning holes 41...
5... are provided (see Figure 3). Note that 51 in the figure is a mounting portion for mounting the transformer relay 35 (see FIG. 1). Thus, the terminal block 29 is manufactured by the following procedure.

A plurality of (four in the illustrated embodiment) conductive terminals 30, 31, 32, 33 are formed using one conductive plate as a material, as shown in FIG.
and connecting parts 40aa, 40b, 40c that connect these
and are punched out in one piece using a press.

Further, the insulator cover plate 37 is formed with a through hole 44a1 that overlaps the connecting portions 40a and 40b, and a through hole 44b that overlaps the connecting portion 40c. Therefore, the conductive terminals 30, 31,
32, 33, and connecting portions 40a, 40b that connect these.
40c is integrally punched out and placed on the inner surface of the insulator cover plate 37, as shown in FIG. At this time,
Each positioning hole 41 provided in the conductive terminal is connected to the cover plate 3.
All the conductive terminals 30, 31, 32, 33 are positioned simultaneously by fitting into the positioning convex portions 45 on the 7 side. Next, the fuse 38 is housed in the recess 39, and with the inner surface of the insulator cover plate 37 joined to the substrate 36, the substrate 36 and the cover body 37 are tightened and fixed with screws 46, 46 as shown in FIG. . After doing so, the through holes 44a, 44
When the jigs 47a, 47b prepared according to the above are applied to the connecting portions 40a, 40b, 40c through the respective through holes to cut these connecting portions, the respective conductive terminals 30, 31
, 32, 33 are not in contact with each other, and a desired terminal block 29 can be obtained.

This terminal block 29 has connection parts 40a, 40b, 4 on its peripheral surface.
Since the cut end of 0c is not exposed, the terminal block 29 can be used safely. Terminal block 29 assembled as above
is installed in the motor storage case 2 by fitting the grooves 42a, 42b of the substrate 36 into the notch edges of the support plate 11.

Also, predetermined lead wires 34 are connected to each conductive terminal 30, 31, 32, 33, and wiring connections between various circuit components are completed. As described above based on the illustrated embodiment, the method for manufacturing a terminal block according to the present invention includes a plurality of conductive terminals 3,
0, 31, 32, and 33 are integrally formed via connecting portions 40a and 40b, and this integrally formed body is positioned and clamped between the insulator substrate 36 and the insulator cover plate 37, and then the cover plate 37
The jig 47a, through the through holes 44a, 44b provided in the
47b against the connecting parts 40a, 40b to cut the connecting parts 40a, 40b, all the terminals 30, 31, 32, 33 can be positioned at the same time, easily and Assembling can be performed efficiently.

Moreover, even if the terminals have different shapes, they are integrally formed with a predetermined positional relationship, so there is no need to pay attention to the arrangement of the individual terminals. Moreover, since all the conductive terminals can be stamped as one piece, the processing efficiency of the terminals can be greatly increased, and the cost of the terminals as a whole can be reduced. In the above embodiment, the transparent holes 44a and 44b were provided only on the cover plate 37, but one of the transparent holes may be provided on the substrate 36 side, or both may be provided on the substrate 36 side. Good too.

Further, in the above embodiment, the connecting portions 40a, 40b, and 40c were all cut and removed from the conductive terminal.
The point is that the connection between the conductive terminals 30, 31, 32, and 33 should be broken.
The object of the present invention can be sufficiently achieved by simply cutting one portion each of b and 40c. Further, connecting portions 40a, 40b, 4
In order to easily cut 0c by abutting the jigs 47a and 47b, it is also possible to make cuts or creases in advance at the portion to be cut. And jig 47
For a and 47b, for example, a screwdriver or the like can be used without preparing a dedicated jig. Furthermore, the pair of insulators (the insulator substrate 36 and the insulator cover plate 37) can be integrally formed with synthetic resin in a state where they are connected by a hinge 48 as shown in FIG. It has the effect of increasing efficiency. In addition, 49 in Figure 5
, 49 are locking holes provided in the substrate 36, and 50, 50 are locking claws provided in the cover plate 37. By locking each of the locking claws 50, 50 into each of the locking holes 49, , the two can be integrated with one touch as shown by the imaginary line without using screws or the like. The present invention described above has the following effects because it has the configuration described in the claims.

After positioning and sandwiching an integrally molded product with multiple conductive terminals between a pair of insulators, the connecting parts are cut using a jig that passes through the through holes in the insulators, so that the multiple conductive terminals are not in contact with each other. Therefore, there is no need to individually manufacture a plurality of conductive terminals, and parts can be processed efficiently. Furthermore, the assembly efficiency is high due to the following reason 12.

1. An integrally molded product consisting of a plurality of conductive terminals and a connecting part is positioned and held between a pair of insulators by fitting the positioning hole with the positioning protrusion of one of the insulators. There is no need to position each terminal individually with respect to the insulator, and multiple conductive terminals can be placed in a fixed position with a single positioning process. They can be placed exactly opposite each other.

2. Since the recess is provided in the insulator, the movement of the jig necessary for cutting can be ensured when cutting with the jig. Since the jig is passed through the through hole to cut the connection, the through hole restricts unnecessary movement of the jig, so there is a risk of accidentally cutting the conductive terminal or of the jig slipping and cutting the conductive terminal. There is no cutting,
Cuts connections accurately and reliably. Since the connecting portion is thinner than the conductive terminal, cutting with the jig is easy and reliable. Further, as described above, since the efficiency of parts processing and assembly is high, it is possible to reduce the cost of manufacturing the terminal block. Moreover, since the through hole through which the jig is passed is made inside the circumference of the insulator, the cut end of the connection will not be exposed from the circumference of the insulator after the connection is cut with the jig. .

Therefore, when assembling the terminal block, the operator will not be injured by the cut end, and even after assembling, electrically unnecessary live parts will not be exposed and short circuits with surrounding conductive parts will occur. It is possible to manufacture a safe terminal block without any danger.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view of a vacuum cleaner incorporating a terminal block according to the present invention, and Fig. 2 shows the terminal block before assembly. FIG. 3 is a plan view for explaining the assembled state of the terminal block, FIG. 4 is an assembled perspective view of the terminal block, and FIG. 5 is a sectional view showing a modified example of the insulator. be. 30, 31, 32, 33... conductive terminal, 36...
...Insulator substrate, 37...Insulator cover plate, 4
0a, 40b, 40c...Connection part, 41...
...Positioning hole, 43a, 43b...Recess, 4
4a, 44b...Through hole, 45...Positioning convex portion, 47a, 47b...Jig.

Claims (1)

[Claims] 1. When manufacturing a terminal block in which a plurality of conductive terminals that are not in contact with each other are sandwiched between a pair of insulators, the plurality of conductive terminals have connecting parts that are thinner than these conductive terminals. One of the insulators has a through hole that overlaps the connecting portion inside the circumferential surface of the insulator, and the other insulator has a through hole that overlaps the connecting portion. , a recess that overlaps the connecting portion is provided inside the circumferential surface of the insulator, and a positioning convex portion is provided on one of the insulators, and the conductive terminal and the connecting portion are integrally molded, After positioning one of the insulators by fitting the positioning hole and the positioning protrusion, the other insulator is joined and connected to this one insulator, and the integrally molded product is placed between these two insulators. A method for manufacturing a terminal block, which comprises clamping and fixing the terminal block, and then cutting the connecting part by abutting the connecting part with a jig passing through the through hole, thereby making the plurality of conductive terminals non-contact with each other.