JPH081326U - Electronic parts - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To be surely held by a machine hand, to facilitate automatic assembly, and to perform assembly work automatically with high efficiency. An electronic component which is mounted on an automatic feeding tape 20 at regular intervals by utilizing terminals 5 and 6 of a metal frame and is automatically mounted on a circuit board by an automatic assembly machine. Part of the metal frame on which the terminals 5 and 6 are formed is erected on the substrate 1 to which the terminals 5 and 6 are attached to form the erected portion 12. The terminals 5 and 6 extend between the tip of the rising portion 12 and the tip of the member 3 on the opposite side of the substrate 1, and the tip of the rising portion 12 and the member 3 on the opposite side of the substrate 1 extend.
And a front end portion thereof are formed as a gripped portion to be gripped by the automatic assembly machine.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to an electronic component that is arranged in parallel on an automatic feeding tape and is automatically attached to a circuit board by an automatic assembly machine.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, electronic components generally arranged side by side on an automatic feeding tape have a gripped portion having a predetermined thickness that can be held in a machine hand of an automatic assembling machine. For example, in a conventional vertical variable resistor, the head portion of the adjusting knob and the bottom surface of the resin mold case accommodating the resistor are the gripped portions. Then, when it is automatically attached to the circuit board, the terminal fixed to the automatic feeding tape is automatically cut by the cutter, the terminal is inserted into the terminal insertion hole of the circuit board, and then it is attached to the back surface of the circuit board. The protruding end is cut with another cutter.

Here, when disconnecting the variable resistor from the automatic feeding tape, the terminals attached to the automatic feeding tape are cut by a cutter so as to be sandwiched, but they are projected from the back surface of the substrate. When cutting the terminal, as shown in FIG. 8, the cutter 22 collides from one direction and is cut off.

[0004]

[Problems to be solved by the device]

 In the case of the above-mentioned conventional technique, when the variable resistor is not housed in the resin mold case, there is a problem that there is no place where it can be gripped by the machine hand of the automatic assembly machine and automatic assembly cannot be performed.

Further, the terminal held by the conventional automatic feeding tape is formed by punching a flat metal frame into a terminal shape, and has a rectangular cross section. Therefore, when cutting the terminal with the cutter, as shown in Fig. 8, the blade 22 of the cutter comes into line contact with the terminal 5, and it is difficult to cut the terminal 5 only by the momentum of the cutter 22, which causes the blade to hurt. There was a problem that it was easy. Further, this causes a problem that the blades are frequently replaced and the work efficiency of the automatic assembly machine is poor.

The present invention has been made in view of the problems of the above-mentioned conventional techniques, and an object thereof is to provide an electronic component that can reliably perform automatic assembly and can also perform assembly work automatically with high efficiency. .

[0007]

[Means for Solving the Problems]

 This invention is an electronic component in which a convex portion is formed on at least a part of the surface of a metal frame terminal held on an automatic feeding tape.

Further, according to the present invention, a part of a metal frame on which terminals of an electronic component to be automatically mounted are formed is erected on a substrate on which the terminal is mounted, and the erected portion is used as a gripping portion for automatic mounting. It is an electronic component.

In the electronic component of the present invention, a convex portion is formed on a part of the surface of the terminal so that the blade of the cutter can easily bite when cutting the terminal.

Further, the electronic component of the present invention has a standing portion formed on the substrate so that even a thin component can be held by a machine hand for automatic mounting.

[0011]

[Embodiment of device]

 An embodiment of the present invention will be described below with reference to the drawings. This embodiment relates to a so-called vertical variable resistor, in which an insulating substrate 1 made of ceramics or the like is provided with a U-shaped resistor 2, and an adjustment knob 3 holds the resistor 2 thereon. The slider is slidably mounted. The knob 3 is provided with a slot 4 for rotation with a screwdriver or the like. Further, the mounting portions 15 and 16 of the terminals 5 and 6 are connected to the electrodes 7 at both ends of the resistor 2, and the mounting portions 15 and 16 are mounted so as to hold the edge of the substrate 1 and solder together with the electrodes 7. It is attached and fixed.

Ribs 8 are formed on the terminals 5, 6 along the longitudinal direction of the terminals 5, 6 at locations to be cut later. The rib 8 serves to increase the strength of the terminals 5 and 6 and to improve the cuttability of the cutter, as described later. As shown in the figure, the rib 8 is formed by pressing a metal frame forming a terminal. The rib 8 is formed before punching the metal frame into a terminal shape. In the rib 8 of this embodiment, terminals 5 and 6 having a thickness of 0.3 mm and a width of 0.5 mm are formed with ribs 8 having a width of 0.4 mm, a length of 4.5 mm and a rib height of 0.1 mm.

Further, as shown in FIGS. 1 and 2, the attachment portions 15 and 16 of the terminals 5 and 6 are provided with fall prevention portions 17 and 18 at right angles to the extending direction of the terminals 5 and 6. . The fall prevention portions 17 and 18 are in contact with the mounting surface of the circuit board with the variable resistor attached to the circuit board (not shown), and the terminals 5, 6, 9 are used when the resistance value is adjusted by the knob 3. This is to prevent the variable resistor from collapsing and falling.

An intermediate terminal 9 is attached to the substrate 1 at an intermediate position between the terminals 5 and 6 and extends in the same direction as the terminals 5 and 6. The intermediate terminal 9 is fixed to the back surface of the substrate 1 by a mounting portion 10 of a metal frame that constitutes the terminal, and the mounting portion 10 has a tip end portion of the rotary shaft 11 of the knob 3 which is a through hole of the mounting portion 10. , Is melted and crushed and fixed to the substrate 1. Further, the mounting portion 10 of the intermediate terminal 9 is provided with a standing portion 12 which is integrally formed with the intermediate terminal 9 so as to stand upright at a right angle to the substrate 1. The upright portion 12 is an upper surface of the knob 3 and a tip end surface of the upright portion 12, and serves as a gripped portion that is held by a machine hand for automatic assembly. Further, the ribs 13 are formed on the surface of the intermediate terminal 9 to increase the strength.

In the variable resistor of this embodiment, as shown in FIG. 5, the terminals 5 and 6 are attached to the automatic feeding tape 20 by the adhesive tape 21 at regular intervals. Then, the automatic feeding tape 20 is mounted on an automatic assembly machine in a state of being wound in a roll or bent in a zigzag manner, and the variable resistor is mounted on a circuit board on which various electronic parts are mounted. Is attached.

In mounting the variable resistor by the automatic assembly machine, first, the terminals 5 and 6 are cut near the upper side of the tape 20 for automatic feeding and separated from the tape 20 for automatic feeding. At this time, the machine hand of the automatic assembly machine sandwiches the upper surface of the knob 3 and the tip of the standing portion 12 to hold the variable resistor, and cuts the terminals 5 and 6 with a cutter. Then, the terminals 5, 6 and 9 are inserted into the terminal insertion holes of the circuit board, and the portions of the terminals 5 and 6 that are protruding are cut off. As shown in Fig. 6, this cut is made by cutting with a cutter 22 from one direction. The rib 8 causes the cutter 22 to start cutting in a small contact area at the beginning of cutting, and the blade of the cutter 22 is smooth with little resistance. Entered into terminal 5 and there was no damage to the blade.

The electronic component of the present invention is not limited to the variable resistor, but can be used for all electronic components that are automatically mounted such as a push switch. Also, as shown in FIG. 7, the terminal may have ribs 8 formed at both the first cutting position A and the cutting position B where the circuit board is cut after being inserted. The shape and position can be appropriately set as long as it is a convex portion formed on the surface.

[0018]

[Effect of device]

 In addition, the metal frame forming the terminal is provided with a standing portion, and the tip of this standing portion is the gripped portion to be gripped by the machine hand of the automatic assembly machine, so that the gripped portion can be easily and accurately. It can be mounted on various electronic components, and it can be automatically mounted on any type of electronic component that can form an upright portion, regardless of which electronic components can be mounted automatically.

[Brief description of drawings]

FIG. 1 is a plan view of a variable resistor according to an embodiment of the present invention.

FIG. 2 is a front view of this embodiment.

FIG. 3 is a bottom view of this embodiment.

FIG. 4 is a partially cutaway perspective view of the terminal of this embodiment.

FIG. 5 is a partially cutaway front view showing a state in which the variable resistor of this embodiment is attached to an automatic feeding tape.

FIG. 6 is a perspective view showing a state in which the terminals of this embodiment are cut.

FIG. 7 is a partially cutaway front view of a terminal of another embodiment of the present invention.

FIG. 8 is a perspective view showing a conventional technique.

[Explanation of symbols]

 1 substrate 5, 6, 9 terminal 8 rib 12 standing portion 20 automatic feeding tape

Claims (1)

[Scope of utility model registration request] 1. In an electronic component which is gripped by an automatic assembly machine and automatically mounted on a circuit board, a part of a metal frame on which terminals are formed is erected on the board on which the terminals are attached to stand up. And an upright portion which serves as a gripped portion to be gripped by an automatic assembling machine.