JP5193818B2 - Crimp terminal - Google Patents

Description

  The present invention relates to a crimp terminal for crimping a lead wire and connecting it to a terminal block, and a method for manufacturing the crimp terminal.

  Conventionally, as this type of crimp terminal, there is one in which a bent portion is formed by bending an end portion of a fastening portion (conductor contact surface) substantially at a right angle, and a cylindrical crimp portion is formed at the bent portion. (Patent Document 1). In this manner, by forming the crimping portion at a right angle to the fastening portion, the crimping portion does not protrude in the lateral direction, so that the mounting space for the crimping terminal can be reduced.

Such a crimp terminal is manufactured by punching a metal plate such as aluminum or copper to form a bent portion and processing a cylindrical crimp portion in the bent portion.
Japanese Utility Model Publication No. 61-190668

  Since the conventional crimp terminal has a configuration in which a bent portion is formed at the end of the fastening portion and a cylindrical crimp portion is processed in the bent portion as described above, force is applied to the crimp portion from the lead wire. There was a risk that the bent part would be deformed. Moreover, since it manufactured by stamping a metal plate and processing a bending part and a crimping | compression-bonding part, there existed a problem that a manufacturing process was complicated.

  This invention is made | formed in view of such a subject, and it aims at providing the crimp terminal with high intensity | strength with respect to a deformation force by which the crimping | compression-bonding part was integrated with the fastening part.

  Another object of the present invention is to provide a method of manufacturing a crimp terminal that can be manufactured by a simple process by mold molding.

  (1) A fastening portion fastened to the terminal block, and a cylindrical crimping portion formed integrally with the fastening portion so that the opening portion faces upward on the upper surface of the fastening portion, Crimp terminal to be used.

  According to the crimp terminal described in (1), since the crimp part is integrated with the fastening part, the strength of the crimp part is large, and even if a deformation force is applied from the conducting wire, deformation or breakage hardly occurs.

  (2) The crimp terminal according to (1), wherein a cut groove is formed in a lower end portion of the crimp portion.

  According to the crimp terminal described in (2), the crimping deformation at the time of crimping the conducting wire inserted into the crimping part using a tool is facilitated, and the crimping connection of the conducting wire to the crimping part can be reliably performed.

  (3) The insulating rubber cap attached to the crimping part presses the screw head of the fixing screw that fastens the fastening part to the terminal block to prevent loosening. (1) or (2) Crimp terminal.

  According to the crimp terminal described in (3), the fixing screw can be prevented from loosening by using the insulating rubber cap.

  (4) A fastening part fastened to the terminal block by molding a metal material and a cylindrical crimping part integrated with the fastening part so that the opening part faces upward on the upper surface of the fastening part A method of manufacturing a crimp terminal, comprising: manufacturing a crimp terminal including:

  According to the method for manufacturing a crimp terminal described in (4), since a crimp terminal including a crimp part integrated with a fastening part can be manufactured by mold molding, the manufacturing process is simplified and mass production is inexpensive. Is possible.

  According to the crimp terminal of the present invention, it is possible to obtain a crimp terminal in which the crimp part is integrated with the fastening part, the strength of the crimp part is large, and deformation or breakage hardly occurs even when a deformation force is applied from the conducting wire.

  Moreover, according to the manufacturing method of the crimp terminal of this invention, the manufacturing process is simple and the manufacturing method of the crimp terminal which can be mass-produced cheaply is obtained.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a crimp terminal according to the first embodiment of the present invention, and FIG. 2 is a longitudinal side view of the crimp terminal of the first embodiment of the present invention.

  As shown in FIGS. 1 and 2, the crimp terminal 1 is integrally formed on the upper surface of a substantially circular fastening portion 3 having a fixing hole 2 and a protruding portion 4 formed on a side portion of the fastening portion 3. And a cylindrical crimping portion 5. The crimping part 5 is substantially perpendicular to the upper surface of the fastening part 3 and the opening is directed upward. The fastening part 3 and the crimping part 5 are formed of a conductive material so that the fastening part 3 and the crimping part 5 are electrically connected.

  FIG. 3 is a longitudinal side view showing a state of attachment of the crimp terminal according to the first embodiment of the present invention. The strand 6a of the lead wire 6 is inserted into the crimping part 5 of the crimping terminal 1 and crimped, the fastening part 3 of the crimping terminal 1 is placed on the conductor 8 attached to the terminal block 7, and the female screw of the conductor 8 is mounted. A fixing screw 10 is screwed into 8a and fastened. The terminal block 7 is formed with a through hole 7a at a location corresponding to the female screw 8a, and the fixing screw 10 projects into the through hole 7a. When the wire portion 6a of the conducting wire 6 is inserted to the back, the wire portion 6a is in electrical contact with the fastening portion 3, so that insufficient insertion and excessive insertion of the wire portion 6a of the conducting wire 6 can be prevented.

  An insulating rubber cap 11 is attached to the crimping part 5. When the crimping terminal 1 is fixed to the terminal block 7 with the fixing screw 10, the screw portion 10 b of the fixing screw 10 is inserted into the fixing hole 2 of the fastening portion 3 in a state where the insulating rubber cap 11 is attached to the crimping portion 5 in advance. It is preferable to fix the fixing screw 10 to the terminal block 7 in the inserted state.

  Before the fixing screw 10 is fixed to the terminal block 7, the insulating rubber cap 11 is inserted into the fixing hole 2 of the fastening portion 3 by inserting the screw portion 10 b of the fixing screw 10 with the insulating rubber cap 11 attached to the crimping portion 5. Since the lower end portion of the insulating rubber cap 11 is elastically deformed between the crimping portion 5 and the screw head 10 a of the fixing screw 10, the lower end portion of the insulating rubber cap 11 is opposite the screw head 10 a of the fixing screw 10 to the crimping portion 5. The state of pressing to the side is maintained. In other words, since the screw portion 10 b of the fixing screw 10 is pressed against the side surface of the fixing hole 2 of the fastening portion 3, when the fixing screw 10 is attached to the terminal block 7, the screw portion 10 b of the fixing screw 10 fixes the fastening portion 3. There is almost no falling out of the hole 2.

  Further, the insulating rubber cap 11 in a state where the fixing screw 10 is fixed to the terminal block 7 enters the gap on the side surface from the upper surface of the screw head 10a while being elastically deformed, and prevents the fixing screw 10 from loosening.

  FIG. 4 is a longitudinal side view of a crimp terminal according to a second embodiment of the present invention. The crimp terminal 1 has a kerf 12 formed in a part of the lower end of the crimp part 5. Thereby, the crimping | compression-bonding deformation | transformation at the time of crimping | bonding the crimping | compression-bonding part 5 to the conducting wire 6 using a tool becomes easy, and the crimping | compression-bonding force with respect to the conducting wire 6 (refer FIG. 3) can be strengthened.

  FIG. 5 is a plan view according to the third embodiment of the present invention, and FIG. 6 is a longitudinal side view of a crimp terminal according to the third embodiment of the present invention. In the crimp terminal 1, the fastening portion 3 is formed in a square shape, and a crimp portion 5 having substantially the same outer diameter as the width of the fastening portion 3 is integrally formed at the end of the fastening portion 3. In the third embodiment, the crimp terminal 1 can be miniaturized, and the mounting density at the time of mounting on the terminal block 7 (see FIG. 3) can be increased.

  In the crimp terminal 1 of the present invention, since the crimp part 5 is integrated with the fastening part 3, the strength of the crimp part 5 is increased, and it is difficult to be deformed with respect to the deformation force received from the crimped conductor 6, and is durable. It is rich and has superior conductivity compared to other crimp terminals.

  Moreover, since the crimping terminal 1 in which the crimping part 5 is integrated with the fastening part 3 can be manufactured by die molding, the manufacturing method of the crimping terminal 1 of the present invention is simple and inexpensively mass-produced. it can.

It is a top view of the crimp terminal by a 1st embodiment of the present invention. It is a vertical side view of the crimp terminal by 1st Embodiment of this invention. It is a vertical side view which shows the attachment state of the crimp terminal by 1st Embodiment of this invention. It is a vertical side view of the crimp terminal by 2nd Embodiment of this invention. It is a top view of the crimp terminal by a 3rd embodiment of the present invention. It is a vertical side view of the crimp terminal by 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crimp terminal 2 Fixing hole 3 Fastening part 4 Protrusion part 5 Crimp part 6 Conductor 7 Terminal block 8 Conductor 10 Fixing screw 10a Screw head 11 Insulation rubber cap 12 Cut groove

Claims (2)

A fastening part fastened to the terminal block;
On the upper surface of the fastening portion, a cylindrical crimping portion formed integrally with the fastening portion so that the opening portion faces upward,
A crimp terminal comprising: an insulating rubber cap attached to the crimp portion, wherein a screw head of a fixing screw that fastens the fastening portion to a terminal block is pressed to prevent loosening . The crimp terminal according to claim 1, wherein a cut groove is formed at a lower end portion of the crimp portion.

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