JP5193819B2 - Crimp terminal - Google Patents

Description

  The present invention relates to a crimp terminal.

  Conventionally, as a crimp terminal used for wiring of a control panel or the like of an electric facility, there has been a structure shown in FIGS. Here, FIG. 11 is a perspective view showing a conventional crimp terminal, and FIG. 12 is a plan view showing the conventional crimp terminal fixed to the terminal block with screws.

  As shown in FIG. 12, the terminal block 20 for fixing the crimp terminal 110 is made of an insulating member, and has a concave portion 21 having a rectangular shape in plan view. The recess 21 has an inner peripheral wall 21a and a bottom surface. The bottom surface of the recess 21 has a strip-like conductive terminal portion 20 a and a screw hole (not shown) for screwing the screw 22. Further, the recess 21 is formed slightly larger than the terminal plate portion 111 so that the terminal plate portion 111 of the crimp terminal 110 can be disposed.

  As shown in FIG. 11, the crimp terminal 110 includes a terminal plate portion 111 fixed to the conductive terminal portion 20 a of the concave portion 21 of the terminal block 20 by a screw 22, and a conductor 31 of the electric wire 30 extending from the terminal plate portion 111. And made of a conductive metal.

  As shown in FIG. 11, the terminal board part 111 is formed in the annular | circular shape. The terminal plate portion 111 is provided with a through hole 111a through which the screw 22 is inserted. The crimping part 112 has a pair of crimping pieces 112 b and 112 b formed by bending both wings at the tip of the flat plate part 112 a extending from the terminal plate part 111.

  The conductor 31 is crimped to the crimping portion 112 by arranging the conductor 31 of the electric wire 30 between the crimping pieces 112b and 112b and caulking the crimping pieces 112b and 112b. As shown in FIG. 12, a rubber insulating cap 32 is covered and insulated on the crimping portion 112 to which the conductor 31 is crimped.

  In the crimp terminal 110 configured as described above, the terminal plate portion 111 is fixed to the conductive terminal portion 20 a of the concave portion 21 of the terminal block 20 with screws 22, as shown in FIG. 12.

As a related prior art, for example, means according to Patent Document 1 is provided. That is, in the prior art according to Patent Document 1, a plate-like elastic protrusion is integrally provided on the end surface of the flat plate portion on the side connected to the connected member, and the tip of the plate-like elastic protrusion is bitten into the connected member. And the connected member are firmly pressed. For this reason, due to the spring action of the plate-like elastic projections themselves, the vibration received by the crimp terminal after connection is absorbed and relaxed, the occurrence of "sagging" in the connection portion can be prevented, and problems such as heat generation due to poor contact can be dealt with. Yes.
Japanese Utility Model Publication No. 6-23164

  However, in the first prior art, when an external force is applied in the left or right direction of the electric wire 30 and the fastening of the screw 22 starts to loosen, the terminal plate portion 111 is moved as shown by an arrow F in FIG. It becomes easy to turn left or right with respect to the axis of the screw 22.

  That is, since the terminal plate portion 111 is formed in an annular shape, when the terminal plate portion 111 rotates with respect to the axis of the screw 22, the insulating cap 32 or the electric wire 30 is connected to the terminal block 20 along with this rotation. It will rotate until it gets caught in a part.

  When this rotation is repeated left and right, the fastening of the screw 22 is gradually loosened, and the screw 22 may eventually come off from the terminal block 20 and the crimp terminal 110 may come off from the terminal block 20.

  Further, in the conventional technique according to Patent Document 1, since the tip of the plate-like elastic protrusion is configured to bite into the connected member, the terminal block having relatively low strength or the like is strong due to the biting in. It could not be applied to a terminal block not suitable for crimping, and was not necessarily a universal crimp terminal. Therefore, the application range to a terminal block is wide, and provision of a crimp terminal that can suppress loosening of the crimp terminal with respect to the terminal block has been demanded.

  In general, a crimp terminal is often integrally formed by punching and bending, for example, a single conductive metal plate, thus saving the amount of metal plate used as a raw material and reducing manufacturing costs. It was also requested.

  The present invention has been made in view of the above, and a crimp terminal that has a wide range of application to a terminal block, can suppress loosening of the crimp terminal with respect to the terminal block, and can reduce manufacturing costs. The purpose is to provide.

  In order to achieve the above object, the present invention provides the following crimp terminal.

  (1) Crimping provided with a terminal plate portion that is disposed in the recess of the terminal block and is fixed to the terminal block with a screw, and a crimping portion that extends from the terminal plate portion and is crimped and connected to the conductor of the electric wire The terminal plate portion is formed in a substantially linear shape or a substantially dotted shape capable of contacting the inner peripheral wall of the recess portion in order to restrict the terminal plate portion from rotating around the axis of the screw. It is characterized by having a pair of left and right rotation restricting portions.

  When the terminal plate portion of the crimp terminal is fixed to the recess of the terminal block with screws, the rotation restricting portion of the terminal plate portion to which the electric wire is crimped faces the inner peripheral wall of the recess. For this reason, even if an external force is applied to the electric wire crimped to the crimping portion and the screw fastening is slightly loosened and the terminal plate portion starts to pivot with respect to the axis of the screw, the rotation restricting portion is not recessed. Since it contacts the inner peripheral wall, the terminal plate portion can be prevented from further rotating, and the screw can be further prevented from loosening. Therefore, it can suppress that a screw remove | deviates from a terminal block and a crimp terminal remove | deviates from a terminal block.

  Further, the crimp terminal only needs to have a pair of left and right rotation restricting portions formed in a substantially linear shape or a substantially dotted shape that can come into contact with the inner peripheral wall of the concave portion, and can be configured extremely simply, thereby reducing manufacturing costs. be able to.

  In addition, since the crimp terminal does not perform strong crimping by biting or the like as in the prior art, it can be applied to a terminal block that does not match such strong crimp, and is highly versatile.

  Therefore, according to the invention of (1), the range of application to the terminal block is wide, the loosening of the crimp terminal with respect to the terminal block can be suppressed, and the manufacturing cost can be reduced.

  (2) In the invention of (1), it is preferable that the rotation restricting portion is formed by cutting out a part of the terminal plate portion having a rectangular shape in plan view.

  According to the invention of (2), since the rotation restricting portion is formed by cutting out a part of the rectangular terminal plate portion in plan view, it remains in the rectangular shape when the crimp terminal is manufactured. It can be formed in a terminal plate portion having an area smaller than that of the terminal plate portion, and the manufacturing cost can be further reduced by saving the amount of metal plate used as a material.

  (3) A crimping terminal comprising: a terminal plate part fixed to a terminal block with a screw; and a crimping part extending from the terminal board part and crimped and connected to a conductor of an electric wire, the crimping part Alternatively, at least one of the terminal plate portions is provided with a rotation restricting piece that restricts the terminal plate portion from rotating around the axis of the screw by contacting the terminal block. And

  When the terminal plate portion of the crimp terminal is fixed to the concave portion of the terminal block with a screw, the rotation restricting piece of the terminal plate portion to which the electric wire is crimped is disposed to be opposed to the terminal block. For this reason, even if an external force is applied to the electric wire and the screw is slightly loosened and the terminal plate portion starts to rotate with respect to the axis of the screw, the rotation restricting piece comes into contact with the terminal block. Further rotation of the plate portion can be restricted, and further tightening of the screw can be suppressed from loosening further. Therefore, it can suppress that a screw remove | deviates from a terminal block and a crimp terminal remove | deviates from a terminal block.

  In addition, the crimp terminal only needs to have a rotation restricting piece that can be brought into contact with the terminal block at at least one of the crimp part or the terminal plate part, and can be configured very simply, and the manufacturing cost can be reduced.

  In addition, since the crimp terminal does not perform strong crimping by biting or the like as in the prior art, it can be applied to a terminal block that does not match such strong crimp, and is highly versatile.

  Therefore, according to the invention of (3), the range of application to the terminal block is wide, the loosening of the crimp terminal with respect to the terminal block can be suppressed, and the manufacturing cost can be reduced.

  (4) In the invention described in (3), the crimping portion has a pair of crimping pieces formed by bending both wings at the tip of the flat plate portion extending from the terminal plate portion, and It is preferable that the movement restricting piece is disposed between the terminal plate portion and the crimping piece and is formed by bending both wings of the base end portion of the flat plate portion.

  According to the invention of (4), the rotation restricting piece is formed by bending both wings of the base end portion of the flat plate portion. Therefore, the rotation restricting piece can be configured very simply and the manufacturing cost can be further reduced.

  According to the present invention, the application range to the terminal block is wide, the loosening of the crimp terminal with respect to the terminal block can be suppressed, and the manufacturing cost can be reduced.

Embodiments of the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment.
[First Embodiment]
FIG. 1 is a perspective view showing a crimp terminal according to the first embodiment of the present invention. In addition, in FIG. 1, the mode before crimping | bonding the conductor of an electric wire is shown for convenience of explanation. FIG. 2 is a plan view showing the crimp terminal fixed to the terminal block with screws.

  As shown in FIGS. 1 and 2, a terminal block 20 for fixing a crimp terminal 10 to be described later is made of an insulating member, and has a concave portion 21 having a rectangular shape in plan view. The recess 21 has an inner peripheral wall 21a and a bottom surface 21b. The bottom surface 21 b has a strip-like conductive terminal portion 20 a and a screw hole (not shown) for screwing the screw 22.

  Moreover, the recessed part 21 is formed a little larger than the terminal board part 11 so that the terminal board part 11 of the crimp terminal 10 mentioned later can be arrange | positioned in the bottom face 21b. The height of the inner peripheral wall 21 a of the recess 21 is formed to be larger than the thickness of the terminal plate portion 11.

  The crimp terminal 10 is connected to a terminal plate portion 11 fixed to the conductive terminal portion 20 a of the concave portion 21 of the terminal block 20 by a screw 22 and a conductor 31 of the electric wire 30 that is extended from the terminal plate portion 11. And made of a conductive metal.

  The terminal board portion 11 has an overall shape in which an isosceles trapezoidal flat plate is extended to a rectangular flat plate, and is arranged so that the lower base side of the isosceles trapezoidal shape is located on the crimping portion 12 side. Yes. The terminal plate portion 11 has a pair of left and right rotation restrictions formed in a linear shape that can contact the inner peripheral wall 21a of the recess 21 in order to restrict the terminal plate portion 11 from turning around the axis of the screw 22. It has parts 11b and 11b.

  That is, the rotation restricting portions 11b and 11b correspond to both side portions of the rectangular flat plate. The rotation restricting portions 11b and 11b are formed by cutting out a part of the terminal plate portion 11 formed in a rectangular shape (a rectangular shape in plan view).

  As shown in FIG. 1, the terminal plate portion 11 is provided with a through hole 11 a through which the screw 22 is inserted. The crimping portion 12 has a pair of crimping pieces 12b and 12b formed by bending both wings at the tip of the flat plate portion 12a extending from the terminal plate portion 11. The conductor 31 is crimped to the crimping part 12 by arranging the conductor 31 of the electric wire 30 between the crimping pieces 12b and 12b and caulking the crimping pieces 12b and 12b. As shown in FIG. 2, the crimping portion 12 to which the conductor 31 is crimped is covered with a rubber insulating cap 32 to be insulated.

  The crimp terminal 10 configured as described above is integrally formed by punching and bending a single conductive metal plate, for example.

  Next, operations and effects of the crimp terminal 10 will be described with reference to FIG. As shown in FIG. 2, when the terminal plate portion 11 of the crimp terminal 10 is fixed to the recess 21 of the terminal block 20 with the screw 22, the rotation restricting portions 11 b and 11 b of the terminal plate portion 11 are the inner peripheral wall 21 a of the recess 21. Will be opposite.

  For this reason, an external force is applied in the left or right direction of the electric wire 30 in the above state, and temporarily, the fastening of the screw 22 is slightly loosened, and the terminal plate portion 11 starts to rotate left or right with respect to the axis of the screw 22. Even so, as indicated by the arrow f in FIG. 2, the rotation restricting portions 11b and 11b abut against the inner peripheral wall 21a, so that it is possible to restrict the terminal plate portion 11 from further turning, and the screw It can suppress that the fastening of 22 loosens any more. Therefore, it is possible to prevent the screw 22 from being detached from the terminal block 20 and the crimp terminal 10 from being detached from the terminal block 20.

  Moreover, since the crimp terminal 10 does not perform strong crimping by biting or the like as in the prior art, it can be applied to a terminal block that is not suitable for such firm crimping, and is highly versatile.

  Further, since the rotation restricting portions 11b and 11b are formed by cutting out a part of the terminal plate portion 11 formed in a rectangular shape, when the crimp terminal 10 is manufactured, the rectangular shape of the terminal is kept. It can form in the terminal board part 11 of an area smaller than the board part 11, can save the usage-amount of the metal plate used as a raw material, and can reduce manufacturing cost.

  As described above, according to the crimp terminal 10 according to the first embodiment, the application range to the terminal block 20 is wide, the loosening of the crimp terminal 10 with respect to the terminal block 20 can be suppressed, and the material cost is reduced. can do.

  In the first embodiment, the terminal plate portion 11 has an overall shape in which an isosceles trapezoidal flat plate is extended to a rectangular flat plate, and the lower base side of the isosceles trapezoidal shape is the crimping portion 12. Although it demonstrated as what is distribute | arranged so that it may be located in the side, the shape of the terminal board part 11 is not limited to this, For example, a shape as shown in FIGS. 3-5 may be sufficient. Here, FIGS. 3 to 5 are plan views showing crimp terminals 10 of other shapes fixed to the terminal block 20 with screws 22.

  That is, as shown in FIG. 3, the terminal plate portion 11 has an overall shape in which the lower base side of an isosceles trapezoidal plate is connected to a rectangular flat plate, and the rectangular flat plate is the crimping portion 12. You may arrange | position so that it may be located in the (not shown) side.

  Moreover, as shown in FIG. 4, the terminal board part 11 becomes the whole shape which connected the diameter side of the semicircular flat plate to the rectangular flat plate, and the said rectangular flat plate is the crimping | compression-bonding part 12 (FIG. (Not shown) may be arranged on the side.

  Furthermore, as shown in FIG. 5, the terminal board part 11 may be formed in a triangular shape, and the apex angle of the triangle may be formed so as to be located on the side opposite to the pressure bonding part 12 (not shown). In this case, a pair of left and right bottom corner portions formed in a substantially dot shape in the triangle are the rotation restricting portions 11b and 11b.

The rotation restricting portions 11b and 11b of the crimp terminal 10 shown in FIGS. 3 to 5 also have the same effects as the rotation restricting portions 11b and 11b shown in the first embodiment.
[Second Embodiment]
FIG. 6 is a perspective view showing the crimp terminal 10 according to the second embodiment of the present invention. For convenience of explanation, FIG. 6 shows a state before the conductor 31 of the electric wire 30 is crimped. FIG. 7 is a side sectional view showing the crimp terminal 10 fixed to the terminal block 20 with screws 22. In the following description, members that are the same as or correspond to those already described are assigned the same reference numerals, and redundant description is omitted or simplified.

  As shown in FIGS. 6 and 7, a conductive terminal portion 20 a having a screw hole 23 for screwing the screw 22 is provided on the bottom surface 21 b of the terminal block 20. Further, the terminal block 20 is provided with a through hole 21 d coaxially with the screw hole 23. The crimp terminal 10 is connected to a terminal plate portion 11 fixed to the conductive terminal portion 20 a of the concave portion 21 of the terminal block 20 by a screw 22 and a conductor 31 of the electric wire 30 that is extended from the terminal plate portion 11. And made of a conductive metal.

  The terminal board part 11 is formed in the annular | circular shape. The crimping portion 12 has a pair of rectangular crimping pieces 12b and 12b formed by bending both wings at the tip of the flat plate portion 12a extending from the terminal plate portion 11.

  In addition, the crimping portion 12 is in contact with the front side wall 21 c of the terminal block 20, so that the terminal plate portion 11 is restricted from rotating around the axis of the screw 22. Is protruding. The rotation restricting pieces 14 and 14 are disposed between the terminal plate portion 11 and the crimping pieces 12b and 12b, and are formed by bending both wings at the base end of the flat plate portion 12a in the opposite direction to the crimping pieces 12b and 12b. ing. That is, the rotation restricting pieces 14 and 14 are formed to be bent so that one side portion of the turn restricting pieces 14 and 14 contacts the front side wall 21 c of the terminal block 20.

  Next, operations and effects of the crimp terminal 10 will be described with reference to FIGS. 6 and 7. As shown in FIGS. 6 and 7, when the terminal plate portion 11 of the crimp terminal 10 is fixed to the conductive terminal portion 20 a of the terminal block 20 by the screw 22, the rotation restricting pieces 14, 14 side of the terminal plate portion 11. The portion is disposed to face the front side wall 21 c of the terminal block 20.

  For this reason, an external force is applied in the left or right direction of the electric wire 30 in the above state, and temporarily, the fastening of the screw 22 is slightly loosened, and the terminal plate portion 11 starts to rotate left or right with respect to the axis of the screw 22. Even so, since the side portions of the rotation restricting pieces 14 and 14 come into contact with the front side wall 21c of the terminal block 20, it is possible to restrict the terminal plate portion 11 from rotating further, and the screw 22 is fastened. Further loosening can be suppressed. Therefore, it is possible to prevent the screw 22 from being detached from the terminal block 20 and the crimp terminal 10 from being detached from the terminal block 20.

  Moreover, since the crimp terminal 10 does not perform strong crimping by biting or the like, it can be applied to a terminal block that does not match such firm crimp, and is highly versatile.

  Further, since the rotation restricting pieces 14 and 14 can be easily formed by bending both wings of the base end portion of the flat plate portion 12a, when the crimp terminal 10 is manufactured, the amount of the metal plate used as a material is greatly increased. Neither does the manufacturing process increase significantly. Therefore, the manufacturing cost can be reduced.

  As described above, according to the crimp terminal 10 according to the second embodiment, by providing the rotation restricting pieces 14, 14, the applicable range to the terminal block 20 is wide, and the crimp terminal 10 can be applied to the terminal block 20. Looseness can be suppressed and the manufacturing cost can be reduced.

  In the second embodiment, the rotation restricting pieces 14 and 14 are formed in a rectangular shape by bending both wings at the base end portion of the flat plate portion 12a in the opposite direction to the crimping pieces 12b and 12b. Although one side part of the regulation pieces 14 and 14 was demonstrated as what was bent and formed so that it might contact | abut with the front side wall 21c of the terminal block 20, it is not limited to this bending direction.

  For example, as shown in FIGS. 8 and 9, the rotation restricting pieces 15, 15 may be formed by bending so that the planar portions thereof face the front side wall 21 c of the terminal block 20. In this case, the same effect as in the case of the second embodiment can be expected. Here, FIG. 8 is a plan view showing the crimp terminal 10 having the rotation restricting pieces 15, 15 having different bending directions, and FIG. 9 is a side cross-sectional view showing the crimp terminal 10 fixed to the terminal block 20 with screws 22. FIG.

  Moreover, in the said 2nd Embodiment, although demonstrated as what provided the rotation control pieces 14 and 14 in the crimping | compression-bonding part 12, it is not limited to this, For example, as shown in FIG. A pair of rotation restricting pieces 16, 16 may be provided at both ends on the side of 12 (not shown). Here, FIG. 10 is a plan view showing the crimp terminal 10 having the rotation restricting pieces 16, 16 on the terminal plate portion 11, and shows a state in which the terminal board 20 is fixed to the terminal block 20 with screws 22.

  Next, operations and effects of the crimp terminal 10 having the rotation restricting pieces 16 and 16 will be described with reference to FIG. When the terminal plate portion 11 of the crimp terminal 10 is fixed to the conductive terminal portion 20 a of the concave portion 21 of the terminal block 20 by the screw 22, the distal end portions of the rotation restricting pieces 16, 16 of the terminal plate portion 11 are the inner peripheral walls of the concave portion 21. It will face 21a.

  For this reason, an external force is applied in the left or right direction of the electric wire 30 in the above state, and temporarily, the fastening of the screw 22 is slightly loosened, and the terminal plate portion 11 starts to rotate left or right with respect to the axis of the screw 22. Even so, as indicated by the arrow f in FIG. 10, the distal end portions of the rotation restricting pieces 16, 16 abut against the inner peripheral wall 21 a, so that it is possible to restrict the terminal plate portion 11 from rotating further. It is possible to suppress further loosening of the fastening of the screw 22. Therefore, it is possible to prevent the screw 22 from being detached from the terminal block 20 and the crimp terminal 10 from being detached from the terminal block 20.

It is a perspective view which shows the crimp terminal which concerns on 1st Embodiment of this invention. It is a top view which shows the crimp terminal fixed to the terminal block with the screw. It is a top view which shows the crimp terminal of the other shape fixed to the terminal block with the screw. It is a top view which shows the crimp terminal of the other shape fixed to the terminal block with the screw. It is a top view which shows the crimp terminal of the other shape fixed to the terminal block with the screw. It is a perspective view which shows the crimp terminal which concerns on 2nd Embodiment of this invention. It is a sectional side view which shows the crimp terminal fixed to the terminal block with the screw. It is a top view which shows the crimp terminal which has the rotation control piece from which a bending direction differs. It is a sectional side view which shows the crimp terminal fixed to the terminal block with the screw. It is a top view which shows the crimp terminal which had the rotation control piece in the terminal board part. It is a perspective view which shows the conventional crimp terminal. It is a top view which shows the conventional crimp terminal fixed to the terminal block with the screw.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Crimp terminal 11 Terminal board part 11b Rotation restriction part 12 Crimp part 12a Flat plate part 12b Crimp piece 14,15,16 Rotation restriction piece 20 Terminal block 21 Recess 21a Inner peripheral wall 22 Screw 30 Electric wire 31 Conductor

Claims (2)

A terminal plate portion disposed in a rectangular recess of the terminal block and fixed to the terminal block with screws;
A crimping portion that extends from the terminal plate portion and is crimped and connected to the conductor of the electric wire;
A crimp terminal comprising:
The terminal plate portion is a pair of left and right turns formed in a substantially dot shape that can contact the inner peripheral wall of the rectangular recess to restrict the terminal plate portion from rotating about the axis of the screw. A crimp terminal having a triangular shape having a movement restricting portion , wherein the rotation restricting portion is formed at a base corner portion of the triangle .   The crimp terminal according to claim 1, wherein the rotation restricting portion is formed by cutting out a part of the terminal plate portion having a rectangular shape in plan view.

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