JP3465738B2 - Lead wire fixing structure to circuit board - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a lead wire to a circuit board, and more particularly to a circuit board which can easily and firmly fix a lead wire to the circuit board. And a lead wire fixing structure. 2. Description of the Related Art Conventionally, to fix a lead wire to a circuit board, the lead wire has been bound to the circuit board by another member such as a wire. However, as described above, since the work of binding the lead wire with another member such as a wire is required, the work efficiency is low, and another member such as a wire is required. However, there is a problem that the cost is high. The present invention solves the above-mentioned conventional problems, can easily perform the work of fixing the lead wire to the circuit board, can increase the work efficiency, and can reduce the cost without requiring another member such as a wire. It is an object of the present invention to provide a structure for fixing a lead wire to a circuit board which can be downed. Means for Solving the Problems The present invention has been proposed to achieve the above object, and the invention according to claim 1 forms a through-groove in a circuit board, and forms the through-groove in the through-groove. By inserting and locking the legs of the fixing flat material, the lead wire is held down by the fixing flat material and fixed to the circuit board. A pair of leg portions, a lower end of the pair of legs is formed with a substantially L-shaped bent locking portion, and the through groove of the circuit board has a pair of locking through grooves at both ends. It is formed in the shape of a letter, by inserting a pair of legs of the fixing plate material for fixing the lead wire into the through groove and sliding toward the pair of locking through grooves, Lock the retaining part of the pair of legs on the lower surface of the circuit board to prevent it from falling off A chassis having a hook portion for fitting and fixing the lower ends of the legs of the fixing plate material inserted into the through groove of the circuit board is provided below the circuit board. The hook portion is made of synthetic resin, and the hook portion is formed integrally with the chassis body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a lead wire fixing structure for a circuit board according to the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a structure for fixing a lead wire to a circuit board according to the present invention, FIG. 2 is a perspective view showing a state where the lead wire is fixed to the circuit board, and FIG. It is a longitudinal cross-sectional view which shows the state which fitted and fixed the leg part of the flat plate material with the hook part of the chassis. In the structure for fixing a lead wire to a circuit board according to the present embodiment, as shown in FIGS. 1 and 2, a through groove 1a is formed in a circuit board 1, and the through groove 1a is formed.
The lead wire 3 is connected to the fixing flat plate 2 by inserting and locking the pair of left and right legs 2a, 2a of the fixing flat plate 2.
And fixed to the circuit board 1. Further, the fixing flat member 2 has a pair of leg portions 2 at both lower ends thereof.
a, 2a are provided, and at the lower ends of the pair of legs 2a, 2a, locking portions 2b, 2b which are bent in a substantially L-shape are respectively formed, and between the pair of legs 2a, 2a. , A holding portion 2c cut in a substantially triangular shape toward the upper side. The through groove 1a of the circuit board 1 is formed in a U-shape in plan view having a pair of locking through grooves 1b, 1b at both ends. The fixing plate 2 formed as described above
In order to fix the lead wire 3 to the circuit board 1 by using the soldering method, the ends 3a and 3a are fixed to the circuit pattern (not shown) of the circuit board 2 by soldering 4 and 4. Left and right pair of legs 2a, 2a of the fixing flat plate 2 for
After being inserted into the elongated hole 1c of the through groove 1a, the sliding movement is performed toward the pair of locking through grooves 1b. As a result, the locking portions 2b, 2b of the pair of legs 2a, 2a are locked to the lower surface of the circuit board 1 and fixed so as not to come off, and the lead wire 3 is pressed by the pressing portion 2c of the fixing flat plate 2. And is firmly fixed to the circuit board 1. As described above, since the lead wire 3 can be fixed to the circuit board 1 by the fixing flat plate member 2, the work of binding the lead wire 3 with a wire or the like is not required, and the work of fixing the lead wire 3 to the circuit board 1 is easily performed. It can be performed and work efficiency can be improved. In addition, since the fixing flat plate member 2 can be manufactured using the surplus portion of the circuit board 1, the cost can be reduced without requiring another member such as a wire. As shown in FIG. 3, a pair of locking through-groove portions 1b, 1b of the through-groove 1a of the circuit board 1
An engaging portion 2b of a pair of legs 2a, 2a of the fixing flat plate 2,
After inserting and locking the 2b, the locking portions 2b, 2b of the pair of legs 2a, 2a may be fitted and fixed to hook-shaped hook portions 5a, 5a formed on the chassis 5. This allows
An engaging portion 2b of a pair of legs 2a, 2a of the fixing flat plate 2,
2b can be firmly fixed, and the fixing plate 2 is
And the lead wire 3 can be securely fixed to the circuit board by the fixing flat plate member 2. The chassis 5 may be formed of a synthetic resin, and the hook portions 5a, 5a may be formed integrally with the chassis body 5b. As described above, according to the first aspect of the present invention, a through groove is formed in a circuit board, and a leg of a fixing flat plate is inserted into the through groove to be locked. As a result, the lead wire is held down by the fixing plate material and fixed to the circuit board, so that the work of fixing the lead wire to the circuit board can be easily performed, and the working efficiency can be improved. In addition, by manufacturing the fixing plate material from the surplus of the circuit board, the cost can be reduced without requiring another member such as a wire. Further, the locking portions of the pair of legs of the fixing flat plate are slid into the pair of locking through grooves of the through groove of the circuit board, and the locking portions of the pair of legs are placed on the lower surface of the circuit board. By locking, the fixing flat material can be fixed to the circuit board so as not to come off, so that the fixing state of the lead wire to the circuit board by the fixing flat material can be strengthened. Also, the lower end of the fixing flat material inserted into the through groove of the circuit board is fitted and fixed by the hook portion of the chassis, so that the fixing flat material can be more firmly retained and fixed. The fixed state of the lead wire to the circuit board by the flat plate material can be more reliably held. Moreover, since the chassis is formed of synthetic resin and the hook portion is formed integrally with the chassis body, no extra member for providing the hook portion is required, and the hook portion and the chassis body are integrated. The strength of the hook portion can be increased, and the hook portion allows the lower end portions of the legs of the fixing flat plate member to be firmly fitted and fixed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a structure for fixing a lead wire to a circuit board according to the present invention. FIG. 2 is a perspective view showing a state in which a lead wire is fixed to a circuit board with a fixing plate material. FIG. 3 is a longitudinal sectional view showing a state in which legs of a fixing plate material for fixing a lead wire to a circuit board are fitted and fixed by hook portions of a chassis. [Description of Signs] 1 Circuit board 1a Through groove 1b Locking through groove 2 Fixing flat plate 2a Leg 2b Lock 3 Lead wire 5 Chassis 5a Hook 5b Chassis body

Claims (1)

(57) [Claim 1] A through groove is formed in a circuit board, and a leg portion of a fixing plate material is inserted into the through groove and locked.
The lead wire is held down by the fixing flat material and is fixed to the circuit board.
A pair of legs is provided, and the lower ends of the pair of legs are substantially L-shaped.
A locking portion bent into a shape is formed, and the circuit board is penetrated.
The groove has a U-shape in plan view having a pair of locking through grooves at both ends.
It is shaped like
Insert the pair of legs of the regular flat plate into the through groove
Sliding movement toward a pair of locking through grooves
Therefore, the engaging portions of the pair of legs are engaged with the lower surface of the circuit board.
Stop and secure it so that it does not come off the circuit board.
The leg of the fixing flat material inserted into the through groove of the circuit board
With a hook for fitting and fixing the lower end of
The chassis is formed of synthetic resin,
The hook part is formed by integral molding on the chassis body
Lead wire fixing structure to a fixed substrate, characterized in that
Build.