JPH046076B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The present invention relates to a terminal connecting device in which a screw does not fall off, and particularly to a terminal connecting device that stably holds a screw attached to a movable member at an upper limit position and a lowered position.

Prior art: This type of conventional terminal connecting device supports screws for fixing terminals, and a movable member that is slidably supported across the terminal board is always directed outward by a helical spring. Since the helical spring is always pressing against the movable member, when screwing the screw into the female thread of the terminal board, the lead wire is rotated while pressing the screw against the restoring force of the spring. Therefore, when a large number of terminal connection devices are installed together, the work is extremely difficult as it involves the work of fixing the lead wires individually against the restoring force of the spring. It has some annoying drawbacks.

Purpose of the invention: The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide a terminal connecting device that allows easy connection of lead wires, and to obtain an inexpensive device of this type with a simple configuration and a small number of parts. With the goal.

Structure of the Invention: Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a front view of an embodiment of the invention. The terminal block main body 1 is integrally formed of plastic, and includes a partition 2 for ensuring electrical insulation from other terminal connection devices adjacent to each other, a central partition wall 3 that divides the partition into left and right halves, and a partition between the left and right sides of the partition. A left side vacancy 4 and a right side vacancy 5 provided on both sides, a central vacancy 6 provided below the partition wall 3, a left end pedestal 41 forming a part of the vacancies 4 and 5, and a right end pedestal 51; The left side wall 61 and the right side wall 62 forming the central cavity 6 are slightly protruded from the front side so that vertical grooves 63 and 64 are formed between the left side wall 61 and the right side wall 62 in the central cavity 6, respectively. pedestal 65, vertical grooves 63, 6
A groove 63a extending upward from inside 4 and recessed,
64a and a protrusion 66 protruding from the front surface of the pedestal 65
and a groove 67 formed between the bottom wall of the empty chamber 6 and a convex portion 7 for fitting with another adjacent terminal connecting device.
and a recess (not shown) on the back thereof are integrally formed. The elastic member 8 is made of a substantially square-shaped metal plate, and has V-shaped valley-shaped bulges 81 and 82 that protrude outwardly at the open free end thereof, which are opposed to each other. By fitting into the groove 77, it can be attached to a predetermined location within the central cavity 6. The terminal board 9 is a rectangular flat plate made of a conductor that is supported by the central partition wall 3 and the left and right pedestals 41, 51, and has female threads 91, 9 on both the left and right sides.
2 is carved, and cuts 93 and 94 are formed facing the partition portion 2 side for passing the movable members 10 and 11. The movable members 10 and 11 are bilaterally symmetrical, and each has a pressing portion 101 and a pressing portion 101 on the upper horizontal piece.
111 is formed, and the neck of the screw 12 and the spring washer 13 are inserted into the center hole of the pressing parts 101 and 111.
is rotatably supported. Also, the pressing part 10
A hanging piece 102, 112 extends downward from one end of 1,111, and its midsection is slightly protruded from the other part to form the groove 63a or 64a.
Guide portions 103, 11 that are slidably fitted into the interior of the guide portions 103, 11
3, and the lower ends of the hanging pieces 102, 112 extend substantially at right angles to form V-shaped valley-shaped bent portions 104, 114. The procedure for attaching these movable members 10, 11 to the terminal block main body 1 is to arrange the movable members 10, 11 in symmetrical positions as shown in FIG.
12 are fitted into the notches 93 and 94 of the terminal board 9, and are attached by pushing the terminal board 9 together with the terminal board 9 into a predetermined position from the front side of the terminal block main body 1.

The left side of FIG. 1 shows a state in which the lead wires are not connected. Lower end bent portion 104 of movable member 10
is at the upper limit position where the bent portion 104 abuts against the terminal plate 9 in a state where it rests on the upper side of the bulged portion 81 of the elastic member 8 . That is, in this state, since the elastic force of the elastic member 8 is acting in the direction of arrow A, a force in the direction of A' is applied to the movable member 10. Therefore, the movable member 10 is prevented from falling down in the outward direction. In this state, the screw 12 does not fall off from the pressing part 101 of the movable member 10, the tip of the screw faces the female thread 91, and there is a gap of length l ₁ between the tip of the screw and the top surface of the terminal plate 9. There is. 1st
The right side of the figure shows the state in which the lead wire 14 is connected. The terminal plate 9 and the pressing portion 111 sandwich the lead terminal, and the movable member 11 has been lowered to the lower limit position.

In this invention, the state without screws is 2.
It has the characteristic of changing depending on the street. That is, Figure 3a
As shown in FIG. 2, when the lower end bent portion 104 of the movable member 10 rides on the upper surface of the bulging portion 81 of the elastic member 8, the bent portion 104 is elastically moved toward the left side wall 61 by the bulging portion 31. The movable member 10 is stably held by receiving the force. Furthermore, the above-mentioned figure 3a
By pressing the movable member 10 downward from the position shown in FIG. In the lowered position where it abuts, the movable member 10 is stably held in the same way as described above.

Therefore, the user pulls up to the state shown in Fig. 3a, inserts the lead wire 14, presses down the movable member 10, and immediately goes to the lowered position shown in Fig. 3B, and then tightens the screw 12 in the state shown in Fig. 3B. At this time, since the guide portion 103 of the movable member 10 is fitted into the groove 63a, the movable member 10 slides along the groove 63a and enters the state shown in FIG. 3c. While this screw tightening is being performed, the movable member 10 can be operated without being affected by the elastic member 8.

Effects of the invention: As described above, this invention stably holds the screw attached to the movable member in two positions, the upper limit position and the lower position, so that lead wires can be connected to a large number of terminal connection devices. In this case, first pull up all the movable members of the terminal connection device to the state shown in Figure 3a, then insert the lead wires one after another and hold them in the state shown in Figure 3b, and finally tighten the screws. Since the lead wires can be connected in a single work process, the work of connecting the lead wires of a large number of terminal connecting devices can be particularly easily performed.

Furthermore, according to the present invention, the movable members 10 and 11 provided on the left and right sides can be held in the above-mentioned bistable positions by a single elastic member 8, thereby providing an inexpensive product with a minimum number of parts. can.

Furthermore, compared to conventional examples that use helical springs, etc., there are fewer parts and the configuration is simpler.
Each part can be assembled very easily.

Furthermore, in the bistable position of the movable members 10 and 11, the elastic force of the elastic member 7 acts in a direction to prevent the movable members from falling down, so that the tips of the screws may be tilted during the work of connecting the lead wires. The technical effect is that the lead wire connection work is easy without any fear.

[Brief explanation of drawings]

Figure 1 is a front view showing an embodiment of the invention, Figure 2 is a front view showing an embodiment of the invention.
The figure is also an exploded perspective view, and FIG. 3 is an explanatory diagram of the operation of the present invention. 1... Terminal block body, 3... Center bulkhead, 4, 5,
6...Vacancy, 8...Elastic member, 81, 82...Bulging portion, 9...Terminal plate, 10, 11...Movable member,
12... Screw, 101, 111... Pressing part, 10
2,112... hanging piece, 104,114... bending part.

Claims (1)

[Scope of Claims] 1. The terminal block is inserted across the center partition provided at the center of the main body, and its both ends are engaged with the left and right end holders that form the empty chambers provided on the left and right sides of the lower part of the center partition. A terminal plate in the shape of a rectangular flat plate is fitted into the central cavity at the bottom of the central partition so as to have elasticity in the direction of the inner wall of the central cavity, and the free single part of the terminal plate is folded into a bulging part protruding outward. an elastic member made of a curved substantially square-shaped metal fitting; and a lower end of the hanging piece that intersects with the terminal plate at the terminal plate notch so that the hanging piece can move up and down between the elastic member and the inner wall of the central cavity. A movable member elastically clamped and supported by a bent portion bulged in a direction opposite to the bulged portion of the elastic member is disposed, and the lower end of the lower end of the movable member is bent. a lead terminal in which a lead wire is connected between the top surface of the terminal plate and the tip of a screw having a retaining part attached to the upper horizontal pressing part of the movable member in a state where the elastic member is brought into contact with the upper side of the bulging part; In a state in which the upper side of the bent portion of the lower end of the hanging piece of the movable member is brought into contact with the lower side of the bulge of the elastic member by pressing down the movable member, By bringing the tip of the screw and the terminal plate close together so that the lead terminal inserted through the screw cannot be pulled out, and further screwing the screw into the screw holes on both sides of the terminal plate and lowering the movable member. A terminal connection device characterized in that the lead terminal is sandwiched between a pressing portion of the movable member and the terminal plate.