JPS60264066A - Device for coupling connector lead - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a control circuit board of a cooking appliance, etc., and a plurality of lead wires that connect electrical components fixed to a housing in the appliance. The present invention relates to the lead wire coupling device.

Structure of the conventional example and its problems FIG. 1 is a cutaway view of the main parts of a conventional household microwave oven. 1 is a heating chamber wall, 2 is a printed circuit board containing a control circuit, and a first connector 3 is attached to the board. Reference numeral 4 denotes a humidity sensor for detecting changes in humidity exhausted from the heating chamber, and is fixed to the metal frame 5. This humidity sensor has three terminals 6, 7.8, and conductors 9, 10.11 are caulked to each terminal. The other end 12, 13, 14 of this conductor is attached to a second connector 16, which is mated to said first connector.

When assembling the microwave oven shown in Figure 1, the metal flame l,
An electrical component (humidity sensor) 4 is fixed to the conductor 9, 10.
．． 11 to the terminals 6, 7.8, the second connector 15 is fitted into the first connector 3 of the printed circuit board that has already been attached.

After that, several parts (not shown) are attached, but during this work, a lateral force as shown in Figure A is applied, resulting in the disadvantage that the second connector tends to come off.

FIG. 2 shows the first and second sockets shown in FIG. 16 is a tenth socket fixed to the printed circuit board, and 1 is a second socket, which is a known socket in which the conductors 12, 13, and 14 are caulked to metal connection terminals therein. As shown in Figure 3, the pullout force in a type of connector in which the conductors are arranged in parallel is strongest in the vertical direction (angle B - 90°), and as the angle becomes smaller, it becomes easier to pull out. This is because a rotational moment as shown by arrow C1D in Figure a is generated.Therefore, when the first socket is installed vertically as in the conventional example shown in Figure 1, it is easy to apply force that makes it easy to pull out. There were drawbacks.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and aims to provide a connecting device for connecting a connector and a conductor, which makes it difficult for the connector to come off even when a force is applied in a direction that makes it easy for the connector to come off. .

Structure of the Invention In order to achieve the above object, the connector and conductor of the present invention are connected in such a way that the length of the conductor connected to the approximate center of the connector is shorter than the length of the conductor connected to the outside of the connector. The bundled structure has the effect of reducing the twisting force generated in the connector and making it difficult for the connector to come off even if a lateral pulling force that would make it easy for the connector to come off is applied.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 4 shows an embodiment of the present invention.
The plurality of conductors is five conductors 18, 19°20.21.2
Consists of 2. These are connected to a second connector 17. The configuration of the present invention is such that among these six conductors, the conductor 20 connected to the approximate center of the connector 17 is shorter than the other conductors 18°19.21, 22.
The feature is that it is glued above the part 23.

By doing this, even if these conductors are pulled to the right, the lateral force is only applied to the carp lid 1 by the conductor 2o at its center, so the connector 17 is , almost no rotational force is generated.

Now, the distance between the connecting portion 23 of the five conductors and the connector 171 is 21 for the conductor 20, and the distance for the conductor 22 is 22.
Assuming that the distance between the conductors 2o and 22 in the connector 17 is 23, and when they are pulled at an angle B as shown in FIG. ,1・flood,cos(1800
-B), so if B) is 200, it is sufficient to design to satisfy the following.

As described above, according to the present invention, there is an effect that it is difficult to come off even if it is pulled in the lateral direction.

Furthermore, FIG. 6 shows another embodiment. FIG. 6 shows a shield wire having two conductor wires 24, 25i inside, a braided metal shield 26, and an exterior sebum layer 27, which is used in a case like the humidity sensor shown in FIG. In this case, it is best to connect the metal shield wire to the approximate center of the connector 17 because the shield wire maintains the strength of the entire wire 28 and maintains electrical neutrality (or reference voltage). Since it is connected, the signal 25°2
4 can be separated on the printed circuit board, which is advantageous.

Furthermore, the entire conductor is bundled at the portion indicated by the arrow 29, and the relationship between the lengths of each conductor only needs to satisfy the above-mentioned relationship.

As described above, according to this embodiment, since the conductor joined to the central part of the connector is the shortest, the coil cover has the effect of being difficult to come off even if the conductor group is pulled laterally.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) When connecting a lead wire whose other end is fixed with a connector to a control printed circuit board containing a control circuit, even if a lateral force is accidentally applied that may cause the connector to come off, Since the connector is less likely to come off, manufacturing problems are reduced.

(2) This is a simple configuration in which the length of the conductor coupled to the roughly central portion of the connector is minimized.

(3) Since the shield conductor made of a metal conductor is connected to the approximate center of the connector, the strength of the conductor can be maintained (conductor breakage is less likely to occur), and electrical signals can be easily separated.

[Brief explanation of the drawing]

Fig. 1 is a cutaway view of the main parts of a conventional household microwave oven, Fig. 2 is an exploded perspective view of a conventional socket, Fig. 3 is an explanatory diagram of the pulling force against the lateral pulling of the socket, and Fig. 4 is 1 is a side view of a main part showing an embodiment of the present invention; FIG. 16... First connector, 1 end... Second connector, 20... Conductor attached to the center, 23...
A binding part of a conductor. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
1Z 〃 Fig. 3 deρ′71, rn] Fig. 4 2ρ Fig. 6 2ρ

Claims (2)

[Claims] (1) A heating chamber, a metal frame forming the heating chamber and an outer frame, a printed circuit board on which a control circuit for controlling the whole is formed, and a first metal frame disposed on the printed circuit board.
and a lead wire consisting of at least three conductors whose one end is fixed to an electrical component fixed to any part of the metal frame, and to the first coil-lid terminal. In a second connector in a cooking appliance having a second connector to be fitted, the second connector, etc.
In this connector, conductors are arranged in parallel, and one of the lead wires is connected to an approximately central portion of the connector.
The connector lead wire coupling device is configured such that the lead wires are coupled near the second connector so that one conductor is the shortest than the other conductors. (2) The lead wire has an inner conductor with at least two or more cores, a metal shield wire, and a shield wire having an outer sheath on the outside of the metal shield, and the lead wire is located approximately at the center of the second connector. while coupling the metal shield to the other terminal part of the connector, and connecting another inner conductor to the other terminal part of the connector.
2. The connector lead wire coupling device according to claim 1, wherein the connector lead wires are coupled in a slack state longer than the metal shield.