JP3194489U - Backlash of wire crimping tool - Google Patents

Abstract

Provided is a backlash which is attached facing a meshing portion of a male and female die portion of a commercially available wire crimping tool and prevents the crimping barrel portion of a crimping connector from coming off from the tool during compression deformation. In an electric wire crimping tool in which concave and convex dies A and B having different sizes are formed at the front end portions of housings 2 and 3 to form a meshing portion 9, formed from the side surface of the housing toward the meshing portion. A backlash is provided in the through-hole 4 so that the push pin 6 whose base end is urged by the elastic body 7 is screwed with the push screw 8 so as to protrude forward and backward to the meshing portion. [Selection] Figure 1

Description

  In the present invention, an electric wire is inserted into a cylindrical crimping barrel of an electric crimping connector (hereinafter simply referred to as a crimping connector) consisting of a tongue portion having a stat hole and a cylindrical crimping barrel, and a crimping tool is used. The present invention relates to a backlash attached to a manual wire crimping tool for compressing and deforming a body portion to hold an electric wire.

  Conventionally, electric wires have been inserted into a crimping connector and compressed and deformed by a crimping tool at an electric construction site. However, the crimping connector is sandwiched between the convex die and the concave die of the crimping tool. At this time, there is a play gap even though it is very small, and the crimping connector tends to drop off from the die due to the gap. In case of falling off, there are many cases that fall into contact with power equipment terminals or energized parts that are exposed inside the so-called switchboard etc. of power equipment, etc., leading to serious accidents. It has become.

  In order to solve this problem, the present applicant has previously proposed a holding fitting for a crimping connector that can be attached to any crimping tool (Patent Document 1). In this holding metal fitting, a leaf spring was attached to the convex die portion of the crimping tool with a U-shaped clamp member, and the tip of the leaf spring was extended to form a sliding plate. Further, the tip surface of the sliding plate is formed as a plurality of semicircular cutouts, and the crimping connector is gripped by the cutouts to prevent dropping.

Actual application 2014-3045

  The present invention can be easily applied to any crimping tool on the premise that a conventional commercially available manual crimping tool has a play gap between the convex and concave dies that become male and female. The backlash is provided so that the crimp connector does not fall off.

  In order to achieve the above object, the present invention is an electric wire crimping tool in which concave and convex dies each having a different size are formed at the tip of a casing to form a meshing portion, and the concave and convex portions are formed from the side of the casing of the tool. A push pin whose base end is urged by an elastic body is protruded in a through hole formed toward the meshing portion of the die portion so as to freely advance and retract.

  Further, the backlash is brought into contact with a push pin into which a tip pin portion protrudes and is inserted into a through hole formed from the side surface of the housing toward the engagement portion of the uneven die portion, and a rear portion of the push pin. The elastic body is inserted, and a push screw that constantly biases the elastic body toward the push pin is screwed.

  Further, the through hole is formed from the side surface of the housing toward the concave die portion, the tip portion of the through hole is formed as a small diameter hole through which the tip pin portion of the push pin is inserted, and the rear portion is a through hole having a large diameter And screwed with a push screw.

  According to the present invention, regardless of the part number of the crimping tool, even if the crimping tool has a gap in the male and female dies, the crimping connector is prevented from falling off and contributes to the improvement of the efficiency of the crimping connection work. be able to.

It is a top view of the principal part of the housing which has the crimping | compression-bonding die part which shows the Example of this invention. It is a side view of the principal part of the same housing. It is sectional drawing of the principal part which shows the inside of the die part of a housing. It is a perspective view of a well-known crimping connector. (A) shows that there is a play gap between the male and female die parts when the crimping connector is sandwiched between conventional crimping tools, and the convex connector that faces the crimping connector by backlash attached to the concave die part. It shows the state where it is pressed against the die and kept from falling. (B) is explanatory drawing of the state which compresses and deforms the crimping | compression-bonding trunk | drum of a crimping connector with a crimping tool, pressing a crimping connector against a convex-shaped die part by backlash.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
FIG. 1 is an enlarged view of the main part of the tip of the housings 2 and 3 of the wire crimping tool 1 of the present invention. The male and female dies at the tips of the housings 2 and 3, that is, the concave die A and A convex die portion B, a through hole 4 formed in the concave die portion A, and a backlash 5 inserted into the through hole 4 are shown separately.

More specifically, the through hole 4 is formed through the two concave die portions A of the casings 2 and 3 from the outside of the side surfaces 2a and 3a toward the meshing portion 9 of both the die portions A and B. The tip is formed as a small-diameter hole 41 through which a push pin described later is inserted.
In the illustrated wire crimping tool 1, two meshing portions 9 made of concave and convex die portions A and B having different diameters are formed in the housings 2 and 3, respectively. In addition, the combination of the unevenness | corrugation of both the die parts which form the meshing part 9 is not restricted to the example of illustration, An unevenness | corrugation may be reversed by the right and left dice | dies.

  Further, a thin pin hole 41 is formed at the tip of the through hole 4 facing the engaging portion 9, a thick through hole 42 is formed at the other end, and a thread groove is formed at the open end. A push pin 6 having a small-diameter pin portion 61 formed at the tip is inserted into the through-hole 4, and a large-diameter base portion 62 is locked at a step portion 43 with a small-diameter pin hole 41. ing. Further, an elastic coil spring 7 is interposed on the rear surface of the push pin 6, and is screwed to the side surfaces 2 a and 3 a of the housings 2 and 3 by a push screw 8. A backlash 5 is constituted by the through hole 4, the push pin 6, the coil spring 7 and the push screw 8.

  In the figure, 10 is a pivot pin for the housings 2 and 3 provided with both die portions A and B, 11 is a fixed plate, and 12 is a fixed pin. Reference numerals 13 and 14 denote grips at the base ends of the casings 2 and 3.

  FIG. 3 shows a general crimping connector 15, which is provided with a cylindrical crimping barrel portion 18 into which an electric wire is inserted into a base portion of a flat tongue portion 17 having a stat hole 16 formed therein. The crimping connector 15 is held in the engaging portion 9 between the concave and convex dies A and B that become the male and female of the crimping tool, and the crimping barrel portion 18 is crimped and deformed to hold the electric wire.

Next, the operation of the present invention will be described.
As shown in FIG. 4 (A), when the crimping connector 15 is interposed in the concave and convex engagement portions 9 of the male and female dies A and B formed in the casings 2 and 3 of the wire crimping tool 1, as shown in FIG. Depending on the electric wire crimping tool, a slight play gap N is generated between the concave die A and the convex die B, so that the interposed crimp connector 15 may fall out of the gap. In FIG. 4A, the symbol L indicates the diameter of the crimping body 18 of the crimping connector 15.

  According to the electric wire crimping tool having the backlash of the present invention, the grips 13 and 14 for tightening the concave and convex dies A and B are operated, and the crimping body 18 of the intervening crimping connector 15 is connected to the coil spring at the base end. 7 is pressed to the opposite convex die part B side by the push pin 6 biased by 7, and is stabilized by tightening both the die parts A and B as shown in FIG. 4B. Thus, the electric wire can be attached to the crimping barrel portion 18.

  Moreover, when the diameter of the crimping | compression-bonding connector 15 differs, it can respond by changing the position of the uneven | corrugated meshing part 9 of both die parts. The plurality of meshing portions 9 formed between the two die portions are preliminarily formed in sizes corresponding to the size of the crimping connector.

DESCRIPTION OF SYMBOLS 1 Electric wire crimping tool 2, 3 Housing 2a, 3a Side surface 4 Through-hole 41 Small pin hole 42 Thick through-hole 43 Step part 5 Backlash 6 Push pin 61 Thin diameter pin part 62 Large diameter base part 7 Coil spring 8 Push screw 9 Mating part 15 Crimping connector 18 Crimping cylinder N Play gap L Diameter of crimping cylinder of crimping connector

Claims (3)

  An electric wire crimping tool in which concave and convex dies A and B having different sizes are formed at the tip portions of the casings 2 and 3 to form a meshing portion 9, and the concave and convex portions are formed from the side surfaces of the casings 2 and 3 of the tool. A backlash of an electric wire crimping tool characterized in that a push pin 6 whose base end is urged by an elastic body 7 protrudes freely in a through hole 4 formed toward a meshing portion 9 of a die portion. .   The backlash includes a push pin 6 with a tip pin portion protruding and inserted into a through hole 4 formed from the side surfaces of the housings 2 and 3 toward the meshing portion 9 of the uneven die portion, and the push pin 6 A backlash of an electric wire crimping tool constructed by inserting an elastic body 7 that is in contact with the rear portion and screwing a push screw 8 that constantly urges the elastic body 7 toward the push pin 6.   The through-hole 4 is formed from the side surface of the housing toward the concave die portion A, the tip of the through-hole 4 is formed as a small-diameter pin hole 41 through which the tip pin portion 61 of the push pin 6 is inserted, and the rear portion is A backlash of an electric wire crimping tool which is formed as a through hole 42 having a large diameter and to which a push screw 8 is screwed.

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