WO2001028045A1

WO2001028045A1 - Multi-screw type terminal

Info

Publication number: WO2001028045A1
Application number: PCT/JP2000/001699
Authority: WO
Inventors: Takeshi Matsuda; Nobuyuki Mano; Masamitsu Ogawa
Original assignee: Smk Corporation
Priority date: 1999-10-12
Filing date: 2000-03-21
Publication date: 2001-04-19
Also published as: KR20010078688A; CN1130804C; JP2001110474A; TW437131B; KR100340736B1; CN1316121A

Abstract

(PURPOSE) To provide a multi-screw type terminal that is improvedin assembling efficiency, reduced in cost by reducing the incidence of defectives, and small-sized to take up a smaller installation space. (ARRANGEMENT) The multi-screw type terminal comprises rotation knobs (25) each projecting from the top of a cylindricalhousing (21) integrally installed on a main-body plate (20), the rotation knobs (25) being installed axially immovable with respect to the housing (21), a bar-like contact (30) that is inserted in a bar-like contact insertion hole (24) extending centrally through each rotation knob (25) such that it is nonrotatable but axially movable with respect to the rotation knob (25), a terminal plate (41) fixed on the bottom of the housing (21), and a threaded shaft (32) screwed in an internally threaded hole (46) therein, whereby rotating the rotation knob (25) rotates the bar-like contact (30) to thereby move the threaded shaft (32) axially with respect to the terminal plate (41) to cause a lead wire gripper (31) to move back and forth in the direction in which it is opposed to the terminal plate (41).

Description

Description Multi-threaded screw terminal equipment Technical field

The present invention relates to a multiple screw type terminal device used for connecting a conducting wire to, for example, a beaker of an audio set. Background art

Conventionally, as the multiple screw type terminal devices, those with the structures shown in Figs. 7 to 9 have been used.

This conventional device is provided with a plurality of conductor connecting portions 3, 3... Having a short cylindrical shape on the surface of a plate-shaped main body plate 1 and having a wire insertion concave portion 2 on a peripheral wall. Terminal plate 4 is fixed to the bottom of 3.

A turning knob 6 fixed around the rod-shaped contact 5 is inserted into the outside thereof, and a screw shaft 7 formed integrally with the 状 -shaped contact 5 is provided in a screw hole 8 provided in the center of the terminal plate 4. Is screwed into.

The rod-shaped contact 5 has a conductor holding member 9 formed in the form of a flange on the base end side, and a screw shaft 7 protruding from the center at the center thereof:

After the screw shaft portion 7 is passed through the screw hole 8 of the terminal plate 4, the terminal plate 4 is prevented from coming off by the curl caulking 15 which crushes and deforms the tip end.

Further, the rod-shaped contact 5 has a Bragg insertion hole 10 formed at the top, and is integrated with the rotary knob 6 by a force caulking 11 which forms the opening edge into a flange shape. .

The banana chip type plug 12 shown in FIG. 9 is inserted into the plug insertion hole 10.

The terminal plate 4 is formed by bending bent pieces 13, 13,... Around the periphery of the terminal plate 4 at an angle of 90 degrees on the back side thereof, and press-fitting them into the fixing holes of the main plate 1. It is fixed to the main body plate 1 by ₌

The terminal plate 14 has a terminal piece 14 formed in a body. The terminal piece 14 is formed into an arc shape, so that it is inserted from the front side of the main body plate 1 and protrudes to the rear side. The terminal portion 14a at the tip can protrude sideways. In the conventional device as described above, when the terminal plate is attached to the main body plate, the terminal plate is assembled from the front side of the main body plate, and a terminal piece integrated with the main body plate is made to penetrate to the back side and protruded. When the terminal is projected sideways, it is necessary to insert the terminal strip in an arc shape, which is inferior in workability.In addition, the longer the lateral projection length, the larger the radius of curvature of the arc shape and the larger the body plate There is a problem that the terminal strip has to protrude greatly from the back surface of the device, and the shape becomes large.

Further, since the terminal plate is fixed to the main body plate by press-fitting the bent piece into the insertion hole, there is a problem that a pressurizing step for that is required.

In addition, since the rod-shaped contact integrated with the rotary knob is prevented from coming off by crushing the screw shaft, many screw shafts protrude from the back of the main body plate, especially in the multiple-type type. With this device, the crushing operation is extremely troublesome, and the workability is poor.

Furthermore, the rotary knob uses a high-hardness synthetic resin material to give it a sense of quality, but when the rod-shaped contact is inserted into the center hole and integrated by curling, the rotary knob is easily broken. However, there is a problem that the incidence of defective products is high.

The present invention has been made in consideration of the above-described various problems in the related art, and has been made to improve the workability of assembling, reduce the occurrence rate of defective products and reduce costs, and is small in size and does not take up an installation space. _c has been made for the purpose of providing the terminal device

Disclosure of the invention

The feature of the present invention for solving the conventional problems as described above and achieving the intended purpose is that a plurality of rotary knobs are protruded on the surface of the main body plate, and a rod-shaped contact is provided at the center of each rotary knob. Into the rod-shaped contact, and a plug insertion hole opened at the tip A conductor pinching portion protruding in a flange shape from the base end, and a screw shaft portion arranged so as to protrude from the center of the conductor pinching portion, and the main body plate is attached to the conductor pinching member. A terminal integrally having a terminal plate is fixed in an opposing arrangement, the screw shaft is screwed into a screw hole provided in the terminal plate, and the screw knob is screwed by rotating the rotary knob. In the multiple screw type terminal device, wherein the conductor is held between the terminal plate and the conductor holding member, the top of a cylindrical housing portion in which each of the rotary knobs is provided integrally with the body plate. Rod-shaped contours which are respectively protruded from the rotary knob and are mounted so as not to be movable in the axial direction with respect to the housing portion, and a through-opening is formed at the center of the rotary knob. The rod-shaped contact is mounted on the insertion hole so that it cannot rotate with respect to the rotary knob and can move in the axial direction.The terminal plate is fixed to the bottom of the housing part. The screw shaft is screwed together, and the rod-shaped contact is rotated by the rotating operation of the rotary knob, whereby the screw shaft moves in the axial direction with respect to the terminal plate, and the lead wire holding portion is connected to the terminal. This is to move forward and backward in the direction facing the plate.

In addition, the top of the housing part is projected from the front side of the main body plate, the bottom side of the housing part is opened to the back side of the main body plate, and the terminal inserted into the bottom of the housing part from the back side of the main body plate. The plate is fixed, and the terminal plate has a plurality of retaining spring pieces integrally around the terminal plate, and the retaining plate pieces are pushed into the housing part from the rear side of the main body plate, so that the retaining panel pieces come into contact with the inner surface of the housing part. The rotary knob has a projection integrally formed on the outer periphery of a base end thereof, and the projection has a top opening edge of the housing. The bottom surface of the rotary knob protrudes integrally with the upper surface of the terminal plate inserted from the back of the main body plate. With only the stopper piece, it is preferable to restrict the movement of the push Write-direction of the rotary knob by 該Su topper piece. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a plan view of a first embodiment of the multiple screw type terminal device according to the present invention. You.

FIG. 2 is a partial bottom view of the above.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a plan view of one terminal used in the first embodiment. FIG. 5 is a side view of the same.

FIG. 6 is a cross-sectional view showing an assembling process of the first embodiment.

FIG. 7 is a plan view showing a conventional multiple screw type terminal device.

FIG. 8 is a side view of the above.

FIG. 9 is a longitudinal sectional view of the same. BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described with reference to FIGS.

In the figure, reference numeral 20 denotes a main body plate molded with a synthetic resin.

On the main body plate 20, eight housing parts 21, 21,... Are formed in two rows.

Each housing part 21 is formed in a cylindrical shape, and a top side is a projecting cylinder part 21 a protruding to the surface side of the main body plate 20, and a bottom part is opened to the back side of the main body plate 20. I have.

A lead wire insertion port 22 into which the lead wire a can be inserted is opened on the side surface of the protruding cylindrical portion 21a.

A knob 23 is formed at the center of the top of the protruding cylinder 21a, and the periphery of the knob insertion port 23 protrudes from the top of the protruding cylinder 21a in a flange shape toward the center. It is a pick-stop portion 24.

The _c rotary knob 2 5 base end side of the突筒2 1 rotates in a knob 2 5 of the housing part 2 1 are inserted are those being molded into a cylindrical shape with a synthetic resin material, the distal end side of the cylindrical A non-slip groove 26 is formed on the outer peripheral surface of the knob portion 25a, and a flange-shaped retaining projection 27 is formed on the outer periphery of the base end portion. I have.

The rotary knob 25 has a cylindrical knob 25 a which is a knob insertion hole 2 3 at the top of the housing. It is formed in a size that can be freely inserted into the inside, and a protrusion 27 for retaining at the base end portion is formed larger than the above-mentioned knob 23.

The rotary knob 25 is inserted into the housing 21 from the bottom opening side of the main body plate 20, and the cylindrical knob 25 a on the tip side is inserted into the insertion slot 23 to protrude outside the housing top. As a result, the retaining projection 27 is brought into contact with the retaining portion 24 on the periphery of the knob insertion opening 23 and is prevented from falling off.

A contact hole 25 b is opened at the center of the rotary knob 25, and a rod-shaped contact 30 is inserted through the hole so as to be movable in the axial direction. The rod-shaped contact 30 is formed of a conductive metal material, and a flange-shaped conductor holding portion 31 is formed at the base end of the rod-shaped contact, and the upper side thereof is circular as shown in FIGS. 1 and 6. A flat portion 30a, which is partially cut out linearly, is formed into an irregular shape formed over the entire length.

On the other hand, the lower part of the contact hole 25 b of the rotary knob 25 also has the same cross-section as the above-mentioned irregular shape, and the rod-shaped contact 30 is inserted into the rod-shaped contact 30 to insert the rod-shaped contact 30. 0 moves in the axial direction with respect to the rotary knob 25, but cannot rotate.

The rod-shaped contact ₃₀ is provided with a screw shaft portion 32 protruding from the body at the center of the conducting wire holding portion 31. Further, a bottomed plug insertion hole 34 is opened at the top of the rod-shaped contact 30.

A terminal 40 is inserted into the housing part 21 from an opening on the bottom side of the main body plate 20. The terminal 40 is formed by stamping and folding a conductive metal sheet material, and has a flat plate-shaped terminal plate 41, and a rear surface perpendicular to one of two opposing edges of the terminal plate 41. At the other edge of the pair of fixing spring pieces 42, 42 and the terminal plate 41, which are raised at a right angle from a position 90 degrees away from the position of the fixing spring piece. It comprises pick-up stopper pieces 43, 43 raised upward and terminal pieces 44 integrally protruded from one of the fixing spring pieces 42.

Each of the fixing spring pieces 42 has an overhanging portion 42a which is bent at a right angle with the tip directed outward, and the overhanging portion 42a is provided below the lower end of the protrusion of the housing 21. The terminal 40 is fixed in the housing portion 21 by inserting the terminal 40 into the terminal fixing hole 45.

Also, this allows the two knobs 43 to come into contact with the bottom of the rotary knob 25 so that the operation of the rotary knob 25 in the pushing direction is restricted and the rotary knob 25 is rotatably mounted on the housing. Has become.

A female screw hole 46 is opened in the center of the terminal plate 41, and the screw shaft portion 32 of the rod-shaped contact 30 is screwed into the female screw hole 46.

When assembling the screw type terminal device configured as described above, the screw shaft portion 32 of the rod-shaped contact 30 is screwed into the female screw hole 46 of the terminal plate 41 in advance, and the body plate 20 is assembled. The rotary knob 25 is inserted into the housing portion 21 from the back side so that the tip of the rotary knob protrudes from the top of the housing portion, and then the terminal 40 is inserted into the housing portion 21 together with the rod-shaped contact 30.

At this time, the fixing spring pieces 42, 42 are elastically pushed into the center and inserted into the housing, so that both overhangs 42a, 42a reach the terminal fixing holes 45, 45. When pushed in, the fixing spring pieces 4 2 and 4 2 return to their original positions due to their own properties, and both overhangs 4 2 a and 4 2 a fit into the terminal fixing holes 45 and 45, and the terminal 40 is fixed. Done. At the same time, the rotary knob 25 is mounted on the predetermined position.

When using this screw-type terminal device, the rotary knob 25 is rotated to raise the wire contact 30 to separate the wire holding portion 31 from the terminal plate 41, and is formed by this. Insert the conductor a to be connected into the gap between the upper surface of the terminal plate 41 and the conductor pinching part 31, and in this state, rotate the rotary knob 25 in the direction in which the rod-shaped contact 30 descends to pinch the conductor. The connection of the conductor a is completed by holding the conductor a between the part 3 1 and the terminal plate 4 1

The plug is connected by inserting a plug 51 (commonly called a banana chip) having a plurality of contact panels 50 elastically projecting therearound into the plug insertion hole 34 of the rod-shaped contact 30.

As described above, in the multiple screw type terminal device according to the present invention, when the respective rotary knobs are respectively projected from the tops of the cylindrical housing portions provided integrally with the main body plate. In both cases, the rotary knob is attached to the housing part so as to be immovable in the axial direction, and the rod-shaped contact is non-rotatably movable in the axial direction through a rod-shaped contact insertion hole that is opened through the center of the rotary knob. Mounting, fixing the terminal plate to the bottom of the housing portion, screwing the screw shaft portion into the female screw hole of the terminal plate, and rotating the rod-shaped contact by rotating the rotary knob. As a result, the screw shaft portion moves in the axial direction with respect to the terminal plate, and the lead wire holding portion moves forward and backward in the direction facing the terminal plate, so that the rotary knob and the screw shaft portion of the body can be moved. This eliminates the need for crimping for retaining and curling for integration of the rod-shaped terminal and rotary knob, simplifying assembly work and reducing the time required for crimping. The occurrence of defective products due is eliminated, cost is Reduction.

Further, the top of the housing portion is projected from the front surface side of the main body plate, and the bottom side of the housing portion is opened to the rear surface side of the main body plate, and the bottom portion of the housing portion is opened from the rear side of the main body plate. By fixing the inserted terminal plate, assembling of each member to the main body plate is completed only by inserting work from the back side of the main body plate, and especially the terminal part integrated with the terminal plate is extended in the horizontal direction long Even if it is desired to do so, it is not necessary to increase the dimension in the height direction as in the case of a conventional curved terminal portion, and a compact shape can be obtained.

Further, a projection for retaining is integrally provided on the outer periphery of the base end portion of the rotary knob, and the projection is brought into contact with the inside of the top opening of the housing portion so as to be immovably retained in the projecting direction. By providing a knob stopper piece integrally projecting from the upper side of the terminal plate with the bottom surface of the rotary knob inserted from the back side of the main body plate, the stopper piece restricts the operation of the rotary knob in the pushing direction, thereby The positioning of the rotary knob is performed simultaneously with the fixing of the terminal plate, and the assembly of the device is further simplified. Industrial applicability

It is possible to improve the workability of assembling, reduce the rate of occurrence of defective products, reduce costs, and provide a small, multi-threaded terminal device that does not take up installation space.

Claims

The scope of the claims

1. A plurality of rotary knobs are protruded from the surface of the main body plate, and a rod-shaped contact is passed through the center of each rotary knob. The rod-shaped contact has a plug insertion hole opened at the tip and a base. A conductor holding portion protruding in a flange shape at an end portion, and a screw shaft portion arranged so as to protrude from the center of the conductor holding portion are integrally provided, and the main body bracket opposes the conductor holding member. A terminal having an integral terminal plate in the arrangement is fixed, the screw shaft portion is screwed into a screw hole provided in the terminal plate, and the screw knob is rotated by rotating the rotary knob to advance the screw shaft portion. In a multiple screw type terminal device in which a conductor is clamped between a terminal plate and a conductor clamping member,

Each of the rotary knobs is protruded from an end of a cylindrical housing portion provided integrally with the main body plate, and the rotary knobs are attached to the housing so as to be immovable in the axial direction. The rod-shaped contact is mounted in the rod-shaped contact insertion hole, which is formed so as to be able to move in the axial direction without being rotatable with respect to the rotary knob, and the terminal plate is fixed to the bottom of the housing. The screw shaft is screwed into the female screw hole, and the rod-shaped contact is rotated by the rotating operation of the rotary knob, whereby the screw shaft moves in the axial direction with respect to the terminal plate. A multiple screw type terminal device characterized in that the wire holding portion is moved forward and backward in a direction facing the terminal plate.

2. The top part of the housing part is projected from the front side of the main body plate, and the bottom side of the housing part is opened to the back side of the main body plate. The bottom side of the housing part is the back side of the main body plate. 2. The multiple screw type terminal device according to claim 1, wherein the terminal plate inserted from above is fixed.

3. The terminal plate has a plurality of retaining spring pieces integrally around the terminal plate, and is pushed into the housing section from the rear side of the main body plate, whereby the retaining spring section is provided on the inner surface of the housing section. 3. The multiple screw-type terminal device according to claim 2, wherein the multiple terminal devices are connected to each other.

4. The rotary knob has an integral projection on the outer periphery of the base end, and the projection is brought into contact with the inside of the top opening edge of the housing to prevent it from moving in the projection direction. , A knob stopper piece integrally projecting from a bottom surface of the rotary plate to an upper surface side of the terminal plate portion inserted from the back side of the main body plate, and restricting movement of the rotary knob in the pushing direction by the stopper piece; The multi-terminal screw type terminal device according to claim 2 or 3, wherein: