JPS6117339B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal connecting device, and particularly to a terminal connecting device in which screws do not fall off.

This type of conventional terminal connecting device supports screws for fixing terminals and constantly presses a movable member slidably across the terminal board outwardly by a helical spring. Because of this structure, the spring chamber that accommodates the helical spring has the disadvantage of being large, and since the helical spring is constantly pressing against the movable member, the restoring force of the spring is reduced when screwing the screw into the female thread of the terminal board. The disadvantage was that the terminal had to be fixed while pressing the screw against the pressure.

The present invention was invented with the aim of solving the above-mentioned drawbacks.

The terminal connection device of the present invention consists of a terminal block main body in which a central partition wall and left and right fixed spring receivers provided at predetermined positions spaced apart from both left and right sides of the partition wall are integrally molded, and a conductor. A rectangular terminal plate is supported perpendicularly to the partition wall and extends on both the left and right sides, and a female screw is carved on both the left and right sides of the terminal plate, and a terminal plate that intersects perpendicularly with the terminal plate and slides against the terminal plate. an L-shaped movable member consisting of a movably supported sliding part and a pressing part parallel to the terminal plate; a movable spring receiver provided at the end of the sliding part of the movable member;
The movable member includes a screw rotatably supported in a hole of the pressing portion and fitted with the female thread, and a compression spring held between the fixed spring receiver and the movable spring receiver, and the movable In the first state in which the member is slid upwardly and there is a gap between the lower surface of the screw and the terminal plate in which the electric wire to be connected can be inserted, the movable spring receiving portion of the movable member is moved against the corresponding fixed spring. The movable member is in a first stable state above the position of the receiving part, and in a second state in which the movable member is slid downward and the lower surface of the screw is in contact with the terminal plate. The movable spring receiving part is characterized by being configured such that the position of the corresponding fixed spring receiving part is also located below and has a second stable state.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a front view of an embodiment of the present invention.

The terminal block main body 1 is integrally molded from plastic, and includes a partition 2 for ensuring electrical insulation from other adjacent terminal connection devices, 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 end wall 4 and a right end wall 5 provided at both ends, a rail mounting portion 6 provided below the partition portion 2, and a convex portion 7 for fitting with another adjacent terminal connecting device and a recess on its back surface. (not shown) is integrally formed.
The terminal plate 8 is a rectangular flat plate made of a conductor supported by the central partition wall 3 and the left and right end walls 4 and 5, with female threads 9A and 9B carved on both left and right sides, and movable members 10A and 10B in contact with the center partition wall. A notch is formed for passing 10B. The movable members 10A and 10B are bilaterally symmetrical. To explain this for 10A, there is a sliding part that perpendicularly intersects with the terminal board 8 and is slidably supported by the terminal board 8, and an upper end of the sliding part is bent at a right angle to form a terminal board 8.
A V-shaped movable spring receiving part 11 is provided at the lower end of the sliding part, and the neck of the hole screw 13 in the center of the pressing part 12 and the spring washer are connected to each other. A wheel 14 is rotatably supported. V-shaped valley-shaped fixed spring receivers 15A and 15B are provided at predetermined positions on the left end wall 4 and right end wall 5 of the terminal block main body 1, facing the movable spring receiver. compression spring 16A,
16B is fitted.

The shape of this compression spring 16A or 16B is
As shown in the figure, a leaf spring, b leaf spring with a slit vertically cut in the center, c leaf spring with a slit vertically cut in the center and the left and right sides curved in different shapes, d loop wire spring,
It can be implemented with various shapes and structures, such as (e) a wire spring whose both ends are free ends, (f) a double-wound wire spring, and (g) a rectangular wire spring.

The left side of FIG. 1 shows a state in which the lead wires are not connected. Due to the restoring force of the spring 16A, the movable spring receiving part 11A of the movable member 10A is at the upper limit position where it contacts the terminal plate 8, and the screw 13 is in the upper limit position of the movable member 10A.
It does not fall off from the pressing part 12, and the tip of the screw faces the female thread. The right side of FIG. 1 shows the state in which the lead wire 17 is connected. Terminal board 8 and pressing part 12
clamps the lead terminal, and the movable member 10B has descended to near its lower limit.

In the present invention, even if the shape and dimensions of the movable member 10 are the same, the state in which the movable member 10 is not screwed changes in two ways depending on the length of the screw 13 or the height of the fixed spring receiver 15. That is, as shown in FIG. 3, the screw 1 at the upper limit position of the movable member 10
3 and the top surface of the terminal plate 8 is l ₁ , and the vertical length of the movable spring receiver 11 and fixed spring receiver 15 is l ₂ , then l ₁ > l ₂ is satisfied. In this case, the movable member 10 is stably held in two positions: the upper limit position shown in FIG. 3a and the lowered position shown in FIG. 3b. A compression spring 16 is inserted between these two positions.
There is a neutral point where the length is minimum, and when the movable member is above the neutral point, the spring exerts an upward force on the movable member, and when the movable member is below the neutral point, the spring exerts an upward force on the movable member. A downward force acts on the movable member. In other words, FIG. 3A shows the above-mentioned first state, in which the position of the movable spring receiving part 11 is at the position of the fixed spring receiving part 15.
FIG. 3b shows the second state described above, in which the position of the movable spring receiver 11 is higher than the position of the fixed spring receiver 15. It is configured to have a second stable state below the position of .

Therefore, when the user pulls up to the state shown in FIG. 3a, inserts the lead wire, and presses down the movable member 10, the user immediately returns to the state shown in FIG. 3b, and in the state shown in FIG. The force of the spring 16 acts in the direction of clamping the screws, and the work can be done without resisting the force of the spring 16 while tightening the screws.Moreover, while the screws are tightened, the force of the spring continues to act in the direction of tightening the screws. Therefore, there is no risk of screws loosening due to vibration, etc.

FIG. 4 shows an example of how the rail mounting portion 6 of the terminal block main body 1 is used. Currently, the shapes of rails for arranging terminal connection devices in parallel include a rail 18A with the tip opening outward, a rail 18B with the tip facing inward,
A rail 18C having two forked portions branching inwardly and downwardly is used. The rail mounting portion 6 shown in the embodiment has a recess 6 in order to fit any of these rails.
1a, 61b, recesses 62A, 62B, surface 63A,
63B, and surfaces 64A and 64B.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a perspective view showing an embodiment of compression springs 16A and 16B of the present invention, and FIG. 3 is an explanatory diagram of the operation of the present invention. FIG. 4 is an explanatory diagram of an example of use of the rail mounting portion 6 of FIG. 1. DESCRIPTION OF SYMBOLS 1...Terminal block body, 3...Central bulkhead, 6...Rail attachment part, 8...Terminal board, 9A, 9B...Female thread, 10A, 10B...Movable member, 11...Movable spring receiver, 13 ... Screw, 15A, 15B ... Fixed spring receiver, 16A, 16B ... Compression spring.

Claims (1)

[Claims] 1 Terminal block main body 1 in which a central partition wall 3 and left and right fixed spring receivers 15A and 15B provided at predetermined positions spaced apart from both left and right sides of the partition wall 3 are integrally formed.
and a rectangular terminal plate 8 made of a conductive material and supported perpendicularly to the central partition wall 3 and extending on both the left and right sides.
, female screws 9A and 9B carved on both the left and right sides of the terminal plate 8, a sliding portion perpendicularly intersecting the terminal plate 8 and slidably supported on the terminal plate 8, and the terminal plate 8. L-shaped movable members 10A and 10B consisting of parallel pressing parts, a movable spring receiving part 11 provided at the end of the sliding part of the movable member, and a rotatable spring receiving part 11 provided in the hole of the pressing part of the movable member. A screw 13 that is supported and fits into the female screws 9A and 9B, the fixed spring receivers 15A and 15B, and the movable spring receiver 11.
A first state in which compression springs 16A and 16B are held between the movable member and the movable member is slid upward to provide a gap in which an electric wire to be connected can be inserted between the lower surface of the screw and the terminal plate. In this case, the movable spring receiving portion of the movable member is located above the position of the corresponding fixed spring receiving portion and has a first stable state, and the movable member is slidably displaced downward and the lower surface of the screw is In the second state in which the movable member is in contact with the terminal plate, the movable spring receiving portion of the movable member is also located at the lower position of the corresponding fixed spring receiving portion, so that the movable spring receiving portion has a second stable state. Terminal connection device.