JPS58942Y2 - Pre-opened crimp terminal - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an optical crimp terminal in which the tip of the fastening portion is open.

Generally speaking, there are two types of crimp terminals: round-hole crimp terminals, which have a round hole for inserting a screw into the clamping part, and a U-shaped tip with a U-shaped opening so that the screw can be inserted from the side into the clamping part. There are crimp terminals, and these are usually used by tightening them to the terminal block with screws in combination with spring washers or other locking members.

However, the combined use of spring washers and other locking members is complicated when using these terminals, and in particular, optical crimp terminals often fall off because their tips are open.

In order to eliminate this inconvenience, in the past, the center side of the mounting plate was broken and bent to provide multiple locking claws, and the locking claws acted as spring washers. However, because the shape of the locking claw is unstable and the tip is pointed, the contact of the locking claw with the circular bottom surface of the screw head is uneven, and the screw tightening is sometimes difficult. There were many difficulties in handling, such as loss of balance and the risk of injury to fingers, etc., making it impractical.

In order to overcome these difficulties, the inventors conducted various studies and found that the tightening screws can be inserted without removing the screws in the optical crimp terminal. When tightening is performed by inserting a screw into the opening by erecting a pair of symmetrically shaped curved protrusions in parallel, facing each other on the edges, the curved protrusions are attached to the lower surface of the screw head. It was discovered that the screw shaft is positioned so as to symmetrically hold the screw shaft from both sides, and that a balanced and uniform spring action is produced on the screw, making it possible to easily and safely attach the screw.

Therefore, an object of the present invention is to provide an optical crimp terminal which has a simple structure, can perform screw tightening operations in a well-balanced manner, is easy to handle, and has excellent safety.

In order to achieve the above object, in the present invention, in an optical type crimp terminal equipped with an opening into which the screw can be inserted without removing the screw, tightening is performed from the edge of the opening to the lower surface of the head of the screw. A curved protrusion piece is provided which protrudes toward the screw, resists the tightening force as the screw is tightened, and has a biasing force in the direction in which the protruding tip moves toward the axis of the screw. The tip surface of the protrusion is symmetrical with respect to the center line of the opening that includes the axis of the screw, parallel to a plane perpendicular to the center line, and parallel to the lower surface of the head of the screw. shall be.

Next, embodiments of the optical crimp terminal according to the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a crimp terminal having a substantially U-shaped flat configuration, and this crimp terminal 10 has an opening 1.
2 is a light-type crimp terminal that can be inserted without removing the tightening screw.

Note that a lead wire 14 is connected to one end of the crimp terminal 10.

A pair of symmetrical curved protrusions 16, 16 are provided in parallel and opposite to each other on the parallel opening edges of the crimp terminal 10 configured as described above.

In this case, it is preferable that the curved protrusion piece 16.16 be inclined toward the opening 12 side.

That is, the curved protruding piece 16.16 protrudes toward the lower surface of the head of the tightening screw, and as the screw is tightened, the tightening resists the force and its protruding tip moves toward the axis of the screw. Curve it so that it is biased in the direction.

Therefore, the tip surface of the curved protrusion piece 16.16 is symmetrical with respect to the center line of the opening 12 that includes the axis of the screw, and is parallel to a plane perpendicular to the center line, and is parallel to the head of the screw. Constructed parallel to the lower surface.

When using the tip type crimp terminal configured in this manner, when the tightening screw is inserted into the opening 12 and the screw is attached, the protruding piece 16.16 is attached to the lower surface of the head of the tightening screw. Abut symmetrically and in a well-balanced manner.

As a result, as the screw is screwed downward, the tips of the protruding pieces 16.16 come to symmetrically hold the screw shaft from both sides of the lower surface of the head of the tightening screw, as shown in Figure 2. In addition, since the protruding pieces 16, 16 are curved, they exhibit a spring action, and the screw attachment preferably achieves the effect of preventing loosening due to vibrations or the like later.

In the present invention, the projection piece 16 having the above-described configuration.
By providing 16, the screw can be easily and reliably installed without using a locking member such as a spring washer.

In addition, when installing the screw, the protruding pieces 16.16 grip the screw shaft part symmetrically on both sides, so that the spring action on the screw is achieved in a well-balanced manner, and stable screw installation is achieved. .

Further, since the projection pieces 16.16 do not have extremely sharp parts, handling and screw attachment are extremely safe.

Furthermore, in the terminal according to the present invention, the protruding pieces 16 and 16 can be molded integrally with the terminal by means such as punching.
It has many practical effects, such as easy manufacturing and a significant reduction in manufacturing costs.

Although the preferred embodiments of this invention have been described above, it goes without saying that various improvements and changes can be made without departing from the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the optical crimp terminal according to the present invention, and FIG. 2 is a front view showing the terminal shown in FIG. 1 in a state where it is tightened with a screw. 10...terminal, 14...lead wire, 1
2...Opening, 16...Protrusion piece.

Claims (1)

[Scope of utility model registration request] In a tip-type crimp terminal equipped with an opening into which the screw can be inserted without removing the screw, the terminal protrudes from the edge of the opening toward the lower surface of the head of the screw, and as the screw is tightened, the tightening occurs. A curved protrusion piece is provided that resists the force and has a biasing force in a direction in which the protruding tip moves toward the axis of the screw, and the tip surface of each protrusion piece is an opening that includes the axis of the screw. 1. An optical crimp terminal characterized in that the terminal is symmetrical with respect to a center line, is parallel to a plane perpendicular to the center line, and is parallel to a lower surface of the head of the screw.