JP2001110481A - Terminal stand for printed wiring board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items for a terminal stand, and to easily attach and/or detach the parts to and/or from a printed wiring board. SOLUTION: Elastic contacts 12 which project from a frame 2 are attached to terminals 1 arranged horizontally on the frame 2. The elastic contacts 12 are inserted in through-holes 13 made on a printed wiring board 8, so as to be freely attachable therein. Stopper arms 14 are attached flexibly to both ends of the frame 2 in one body therewith. A hook 14b at a tip of the stopper arm 14 is engaged with a stopper hole 15 made on the printed wiring board 8, in such as condition that the elastic contacts 12 are inserted into the through- holes, for fixing the frame 2 to the printed wiring board 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal board for a printed wiring board mounted on a printed wiring board of an electronic device.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of a conventional terminal block. The illustrated terminal block is of a connector type and comprises a frame 2 of an insulator (mold resin) in which a plurality of terminals 1 are arranged side by side, and a base 4 in which contact pins 3 are arranged corresponding to the terminals 1. The terminal 1 is inserted and connected to the upper end of the contact pin 3 via a female contact 5 (only one pole is shown). The frame 2 is detachably fastened and fixed to the base 2 by screwing the screws 6 at both ends into nuts 7 at both ends of the base 2. The base 2 is attached to the printed wiring board by inserting the lower end of the contact pin 3 into a through hole of a printed wiring board (not shown) and soldering the same.

FIG. 7 shows a different conventional example. In FIG. 7, the terminal block is composed of only the frame 2, and plating contacts 9 are arranged on the edge of the printed wiring board 8 corresponding to the female contacts 5 of the terminal 1. The frame 2 is inserted and connected to the printed wiring board 8 via the female contacts 5, and the screws 6 are screwed into the nuts 11 of the housing 10 of the electronic device, so that the frame 2 is detachably fastened and fixed to the housing 10.

[0004]

The conventional structure shown in FIG. 6 requires a base 4 to make the frame 2 detachable.
Further, since the screws 6 are used for fixing the frame 2, there is a problem that the number of parts is large and the manufacturing cost is high as a whole. On the other hand, the conventional configuration of FIG. 7 does not require a base,
It can be mounted only on the edge of the printed wiring board 8 and only in a direction parallel to the surface of the printed wiring board 8, and since the screws 6 are used to fix the frame 2, the attaching and detaching work is troublesome. There is. Therefore, an object of the present invention is to reduce the number of components of a terminal board for a printed wiring board, and to be able to be easily attached to and detached from an arbitrary place on the printed wiring board.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an elastic contact which can be inserted into and detached from a through hole of a printed wiring board so as to be connectable therewith and protruded from the frame to each of the terminals. A hook which can be engaged with the printed wiring board in a state where the elastic contact is inserted and connected to the through hole at one end, and a locking arm having a finger hook at the other end is flexibly attached to both ends of the frame. It shall be formed integrally (claim 1). According to the present invention, since the frame is directly attached to the printed wiring board via the elastic contacts provided on the terminals, a base is not required, and the locking arm is engaged with the printed wiring board to fix the frame. Eliminates the need for screw tightening.

The elastic contact has a projection which comes into contact with the inner surface of the through hole, and is formed integrally with the terminal as a leg provided with a slit (claim 2), or a conductive thin plate having spring properties is bent into a V-shape. One of the legs is bent in a U-shape to form a contact projection on the angled projection, and this elastic contact is crimped to the terminal via the wrapping portion of the other leg. (Claim 3). In addition, by soldering the elastic contact to the through hole, a strong connection can be achieved (claim 4).

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Note that the same reference numerals are used for the portions corresponding to the conventional example. FIG. 1 is a front view of a terminal block showing an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part thereof. In FIG. 1, an elastic contact 12 is integrally formed with a terminal 1 arranged on a frame 2 so as to protrude from a bottom surface of the frame 2, and the elastic contact 12 is removably inserted into a through hole 13 of a printed wiring board 8. It is configured to be connectable.

On the other hand, locking arms 1 are provided at both ends of the frame 2.
The locking arm 14 is integrally connected to the frame 2 by a connecting portion 14a constituting a flexible hinge so as to be tiltable at one point. A hook 14b is formed at the lower end of the locking arm 14, and a finger hook 14c is formed at the upper end. In the illustrated terminal block, as shown in FIG. 2, the elastic contact 12 is inserted and connected to the through hole 13 of the printed wiring board 8, and the hook 14b of the locking arm 14 is inserted into the locking hole 15 of the printed wiring board 8 in this state. It is engaged and fixed. In order to remove the terminal block from the printed wiring board 8, a fingertip is hung on the finger hook 14c of the locking arm 14, and the hook 14b is removed by tilting the locking arm 14 about the joint 14a as a fulcrum as shown by a chain line in FIG. As a result, the terminal block can be pulled out, so that the elastic contact 12 is pulled out from the through hole 13.

FIG. 3 is a front view of a terminal block showing another embodiment. This embodiment differs from FIG. 1 in that the hooks 14b and the finger hooks 14c of the locking arm 14 are reversed in direction. In the case where the terminal block is relatively small and the distance between the locking arms 14 at both ends is about 100 mm or less, as shown in FIG. It can be removed, but large terminal blocks cannot be handled with one hand. In this case, as shown in FIG. 3, the direction of the locking arm 14 is reversed by 180 degrees so that the terminal block is held with both hands.
The locking arm 14 can be tilted outward with each finger to release the locking.

FIG. 4 is an enlarged view showing a detailed structure of the elastic contact 12, FIG. 4 (A) is a front view of the terminal, and FIG. 4 (B) is a side view thereof. In FIG. 4, a terminal 1 is made of a conductive plate having a spring property, for example, a phosphor bronze plate.
The elastic contact 12 is integrally formed on the connection side with the contact. The elastic contact 12 has a bifurcated shape having contact protrusions 12a on both sides of the slit 16 and has elasticity in the left-right direction in FIG. 4A. By increasing the diameter by about 0.6 mm, the variation in the inner diameter of the through hole 13 can be reduced.
By absorbing 0.1 mm, a sufficient contact pressure can be obtained. Since the elastic contact 12 of FIG. 4 is formed integrally with the terminal 1, there is an advantage that the configuration is simple and the manufacturing cost is low.

FIG. 5 is an enlarged view showing a different detailed configuration of the elastic contact 12, FIG. 4A is a front view of the terminal, and FIG.
Is a side view thereof. In this case, the terminal 1 is formed of a conductive plate that can be easily bent, for example, a copper plate, and an elastic contact 12 made of a conductive thin plate having a spring property, for example, a phosphor bronze thin plate is separately attached to the terminal 1. The elastic contact 12 is formed by bending a conductive thin plate into a V-shape, one leg of which is bent in a V-shape, and a contact protrusion 12a is formed by extruding the angled protrusion and formed on the other leg. It is crimped to the terminal 1 via a tubular winding portion 12b.

The elastic contact 12 has elasticity in the left-right direction in FIG. 5B.
The contact protrusion 12a is formed on each of the right and left sides at 7. Since the elastic contact 12 in FIG. 5 is configured separately from the terminal 1, for example, a thin plate can be used without being restricted by the material of the terminal 1, and the terminal 1 is also restricted by the material of the elastic contact 12. Therefore, there is an advantage that a material which can be easily bent as shown in the figure can be used. As shown by a two-dot chain line in FIG. 4, a stronger and more reliable connection can be achieved by soldering the elastic contact 12 on the through hole 13 with the solder 17.

[0013]

As described above, according to the present invention, the terminal block frame can be removably attached to the printed wiring board without using a base, and the number of parts can be reduced, so that the manufacturing cost can be reduced. In addition, since it can be attached and detached with a single touch by the locking arm, troublesome screw tightening work is unnecessary. Furthermore, it can be freely attached to any location without being limited to the edge of the printed wiring board.

[Brief description of the drawings]

FIG. 1 is a front view of a terminal block showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a front view of a terminal block showing another embodiment of the present invention.

4A and 4B show a detailed configuration of an elastic contact, wherein FIG. 4A is a front view and FIG. 4B is a side view thereof.

FIG. 5 shows different detailed configurations of the elastic contact;
(A) is a side view, (B) is the front view.

FIG. 6 is a perspective view of a terminal block showing a conventional example.

FIG. 7 is a perspective view of a terminal block showing a different conventional example.

[Explanation of symbols]

 1 Terminal 2 Frame 8 Printed Wiring Board 12 Elastic Contact 12a Contact Protrusion 13 Through Hole 14 Locking Arm 14b Hook 14c Finger Hook 15 Locking Hole 16 Slit 17 Solder

Claims (4)

[Claims] 1. A printed wiring board terminal block in which a plurality of terminals are arranged side by side on a frame made of an insulating material, wherein an elastic contact which can be inserted and detachably inserted into a through hole of the printed wiring board and connected from an end face of the frame. A locking arm having at one end a hook capable of engaging with the printed wiring board in a state where the elastic contact is inserted and connected to the through hole and provided at each of the terminals, and a finger hook at the other end. A terminal block for a printed wiring board, wherein the terminal block is flexibly integrated with both ends of the frame. 2. A terminal board for a printed wiring board according to claim 1, wherein said elastic contact has a projection for contacting an inner surface of the through hole, and is formed integrally with said terminal as a leg provided with a slit. 3. The elastic contact is formed by bending a conductive thin plate having spring properties into a V-shape, and one of its legs is bent into a V-shape to form a contact protrusion on the chevron. 2. The terminal block for a printed wiring board according to claim 1, wherein the elastic contact is crimped to the terminal via a looped portion of the other leg. 4. A terminal board for a printed wiring board according to claim 1, wherein a firm connection is made possible by soldering said elastic contacts to through holes.