JP2015056209A - Terminal for electric connector and electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal for an electric connector and an electric connector which can be easily connected with a core wire of a cable without using a special tool.SOLUTION: There is provided a terminal for an electric connector comprising: a base part; a pair of clamping pieces which extend from one end of the base part to an extending side of a cable in a facing manner and at least one of which is displaceable to the inside; and a wedge piece. Each of the pair of clamping pieces has a tip part bent inside, and each of the pair of clamping pieces has a hole at the tip part. The holes are overlapped in the state where at least one of the pair of clamping pieces is displaced to the inside, and in the state where a core wire of the cable is inserted into the overlapped holes, the wedge piece can be pressed into a space between the pair of clamping pieces. Further, there is provided an electric connector including the terminal for an electric connector.

Description

  The present invention relates to an electrical connector terminal and an electrical connector. In particular, the present invention relates to an electrical connector terminal that can be connected to a cable without using a special tool, and an electrical connector including the terminal.

  To attach the electrical connector terminal to the cable, peel off the outer sheath of the cable, expose the core wire, insert the core wire into the terminal, and use a special tool such as a crimping tool to attach the terminal to the cable. In general, the core wire and the terminal are electrically connected while being fixed. Depending on the structure of the terminal, a special jig made according to the shape of the terminal is required instead of the pliers or the like that are generally used.

  However, using a crimping tool when attaching the terminal to the cable means that the cable core wire is placed at a predetermined position on the terminal, and the crimping tool is picked up by hand to perform the installation work. Becomes lower. Further, when a large number of crimping operations are performed by a large number of people, it is necessary to prepare crimping tools for the number of persons. However, preparing a large number of crimping tools is expensive and is not preferable. Furthermore, when attaching the terminal to the connector outdoors, it takes time to carry the crimping tool. Therefore, a terminal that can be connected to the core wire without using a crimping tool is considered. For example, Patent Document 1 discloses an invention in which a cable core wire (lead wire) is pressed against a terminal using a clamp spring and connected. In the invention of Patent Document 1, the reinforcing member increases the pressing force by the spring so that the core wire does not come out of the terminal.

JP 2006-344392 A

  However, as described in Patent Document 1, in order to press and fix the core wire by the force of the spring, it is necessary to increase the force of the spring, and an expensive material having high rigidity is required. Moreover, in patent document 1, since a reinforcement member is used, since a structure becomes complicated and many materials are used, a manufacturing cost rises and the size of a connector will become large.

  Accordingly, an object of the present invention is to provide an electrical connector terminal that can be manufactured without using a highly rigid material and can be easily connected to a cable core without using a special tool, and for the electrical connector. An electrical connector including a terminal is provided.

Of the inventions disclosed in this application, the outline of typical ones will be simply described as follows.
That is, an electrical connector terminal according to the present invention includes a base portion, a pair of sandwiching pieces that extend from one end of the base portion facing the cable extension side, at least one of which can be displaced inward, and a wedge piece. Each of the pair of holding pieces has a tip portion bent inward, each of the pair of holding pieces has a hole in the tip portion, and at least one of the pair of holding pieces is displaced inward. In this state, the hole is an electric connector terminal that can be press-fitted between the pair of holding pieces in a state where the core wire of the cable is inserted through the overlapping and overlapping holes.

  In the electrical connector terminal described above, it is preferable that at least one of the pair of sandwiching pieces has a restoring force in the outward direction in a state where at least one of the pair of sandwiching pieces is displaced inward. Further, the wedge piece extends in a cable extending direction from a position perpendicular to the extension position of the pair of sandwiching pieces at the one end of the base portion, and the wedge piece is bent inwardly, You may have a press-fit part which can be press-fitted between clamping pieces, and the wedge piece may have a rib on the back. Each of the pair of sandwiching pieces preferably has a convex portion protruding inward at an interference portion with the wedge piece. Further, it is more preferable that the wedge piece has a locking projection on a side surface of the pair of clamping pieces, and the locking projection is engaged with the convex portion.

  The present invention also provides an electrical connector comprising any one of the electrical connector terminals described above and a housing having a terminal insertion hole for accommodating the electrical connector terminal. In the electrical connector, the terminal insertion hole preferably presses the wedge piece inward by an inner wall.

  Furthermore, the invention of the present application further includes a cord can fitted into the housing and a pushing member positioned in the cord can in the electrical connector, and the pushing member has a through hole for holding a cable. The pushing member has a projecting portion projecting toward the housing side around the through hole, the projecting portion has a pressing surface at a tip, and the pressing surface includes the housing and the cord can When the cable is fitted, the one that presses the contact surface on the cable extension side of the distal end portion of the electrical connector terminal in a state where the core wire of the cable is held by the restoring force is provided.

  The invention disclosed in the present application provides a terminal and an electrical connector that can be easily connected to a cable core without using a special tool and can be manufactured without using a highly rigid material.

1 is a perspective view of an electrical connector terminal 1 according to an embodiment of the present invention. It is a top view of the terminal 1 for electrical connectors by one embodiment of this invention. It is a side view of the terminal 1 for electrical connectors by one embodiment of this invention. It is a perspective view of the terminal 1 for electrical connectors in the state which displaced the clamping piece inside. It is a figure which shows the example of the shape of a hole. It is a perspective view which shows the terminal 1 for electrical connectors of the state which hold | maintained the cable temporarily. It is a top view which shows the terminal 1 for electrical connectors of the state which temporarily hold | maintained the cable. It is sectional drawing of the AA cross section shown by FIG. It is a perspective view which shows the terminal 1 for electrical connectors of the state which connected the cable completely. It is a top view which shows the terminal 1 for electrical connectors of the state which connected the cable completely. It is sectional drawing which shows the state before fitting the cord can of the electrical connector by one Embodiment of this invention with a housing. It is sectional drawing which shows the state which made the housing | casing fit the cord can of the electrical connector by one Embodiment of this invention. It is the enlarged view to which the part shown by the area | region B of FIG. 11 was expanded. It is a top view of the terminal 40 for electrical connectors by one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

  FIG. 1 is a perspective view showing an electrical connector terminal 1 according to an embodiment of the present invention. FIG. 2 is a top view of the terminal 1, and FIG. 3 is a side view. FIG. 4 is a perspective view showing the terminal in a state where the sandwiching pieces 4a and 4b are displaced inward.

  The terminal 1 includes a base portion 2 extending in the longitudinal direction 16 and a contact portion 3 that is located at the counterpart terminal side end of the base portion 2 and is in contact with and electrically connected to the counterpart terminal. In the present embodiment, the base portion 2 has a U-shaped cross section perpendicular to the longitudinal direction 16, but may have another shape, for example, a cylindrical shape or a rectangular cross section. There may be. However, it is preferable to have a U-shaped cross section from the viewpoint of reducing the material and suppressing the manufacturing cost. Moreover, in this embodiment, although a contact part is a female type | mold, a male type | mold may be sufficient as another shape connectable with a counterpart terminal. The terminal 1 is formed by punching a plate-like (plate-like) conductive metal (phosphor bronze, copper alloy, stainless steel, etc.) with a die and then bending it.

  The terminal 1 has a pair of clamping pieces 4a and 4b extending from the end 2a opposite to the contact portion 3 of the base portion 2 to the cable extension side. The sandwiching pieces 4a and 4b are plate-shaped and face each other. Convex portions 11a and 11b projecting in the inner direction 17 are provided at the intermediate portions 6a and 6b of the sandwiching pieces 4a and 4b. The convex portions 11a and 11b are positioned so as to face each other so that a press-fit portion 13 described later can be press-fitted between the convex portions 11a and 11b. Further, the sandwiching pieces 4 a and 4 b include tip portions 7 a and 7 b formed by being bent inward so as to be substantially perpendicular to the longitudinal direction 16. That is, the distal end portion 7a of the sandwiching piece 4a is formed by being bent toward the sandwiching piece 4b, and the distal end portion 7b of the sandwiching piece 4b is formed by being bent toward the sandwiching piece 4a. The tip portions 7a and 7b have elliptical holes 8a and 8b provided for passing the core wire of the cable. When the clamping pieces 4a and 4b are bent outward at the connecting portion between the clamping pieces 4a and 4b and the base portion 2, the base portions 5a and 5b positioned on the base portion 2 side of the clamping pieces 4a and 4b From 2 to the intermediate portions 6a and 6b, it extends outward. For this reason, it is possible to displace the clamping pieces 4a and 4b inward by applying a force in the inner direction 17 to the clamping pieces 4a and 4b. That is, the interval (distance) between the sandwiching pieces 4a and 4b can be adjusted. As shown in FIG. 4, the tip portions 7a and 7b are formed by being bent at different positions in the longitudinal direction so that the two tip portions 7a and 7b overlap with each other when the sandwiching pieces 4a and 4b are displaced inward. Has been. In other words, if the distal end portions 7a and 7b are in the same position in the longitudinal direction, the distal ends of the sandwiching pieces 4a and 4b interfere with each other, and the sandwiching pieces 4a and 4b cannot be displaced inward. 7a and 7b are in different positions with respect to the longitudinal direction. Further, as will be described later, since the cable core wires are clamped using the holes 8a and 8b, it is necessary to reduce the distance in the longitudinal direction 16 between the tip portions 7a and 7b. For example, the distance in the longitudinal direction 16 between the tip portions 7a and 7b is preferably equal to or less than the radius of the cable core wire, and more preferably the tip portions 7a and 7b are close to each other.

  As shown in FIG. 3, the base portions 5a and 5b are narrower than the intermediate portions 6a and 6b and the tip portions 7a and 7b in order to easily have elasticity. In the present embodiment, both of the pair of sandwiching pieces 4a and 4b can be displaced, but in the present invention, only one of them may be configured to be displaced inward. In the case where only one of the configurations is displaceable inward, the non-displaceable sandwiching piece is configured to extend to the cable extension side along the longitudinal direction 16 without being bent at the connection portion with the base portion. May be. That is, it is only necessary that the distance (distance) between the sandwiching pieces can be adjusted by displacing the one sandwiching piece relative to the other sandwiching piece.

  As shown in FIG. 4, the holes 8 a and 8 b are provided at positions where at least part of the holes 8 a and 8 b overlap with each other when viewed from the cable extension side in the longitudinal direction 16 in a state where the clamping pieces 4 a and 4 b are displaced inward. 8a and hole 8b communicate. The holes 8a and 8b have an elliptical shape having a major axis in the displacement direction and a minor axis in a direction perpendicular to the displacement direction. Both the short axis and the long axis of the holes 8a and 8b are preferably larger than the diameter of the core wire in order to pass the core wire of the cable. Further, at least the minor axis of the holes 8a and 8b is smaller than the diameter of the entire cable so that the entire cable including the outer skin does not pass through the holes 8a and 8b. The reason why the holes 8a and 8b have the long axis in the displacement direction is that the overlapping amount of the sandwiching pieces 4a and 4b through which the core wires of the cables can pass through the overlapping holes 8a and 8b is given with a margin. This is to facilitate the operation of passing the core wire through the holes 8a and 8b. In this embodiment, the shape of the holes 8a and 8b is elliptical. However, if the hole can be inserted into the hole where the core wires overlap and the entire cable does not pass through the hole, the other holes It may be a shape. For example, the holes may have a rhombus shape as shown in FIG. 5a or a hexagonal shape as shown in FIG. 5b. Further, the two holes do not have to have the same shape. For example, one of the two holes can be elliptical and the other can be diamond-shaped.

  The terminal 1 further has a wedge piece 12 extending from the upper side between the pair of clamping pieces 4a and 4b toward the cable extension side at the end 2a on the clamping piece side of the base portion 2. That is, at the end portion 2a on the clamping piece 4a, 4b side of the base portion 2, the cross section of the base portion 2 is not U-shaped but has one side added to have a rectangular cylindrical cross section. Extends from the added side. If the wedge piece 12 is positioned between the sandwiching pieces 4a and 4b in a state where the terminal 1 is deployed (a state where the terminal 1 is driven out from a metal plate), the design freedom of the wedge piece 12 is restricted. Therefore, in a state where the terminal 1 is unfolded, the wedge piece 12 extends from the added one side so as to be positioned outside the sandwiching pieces 4a and 4b. The wedge piece 12 is plate-shaped, and is thin on the base portion side, and is wider toward the tip side to a predetermined position in accordance with the outward spread of the root portions 5a and 5b of the sandwiching pieces 4a and 4b. Further, the wedge piece 12 has a press-fit portion 13 formed by bending inward at the tip portion. The bending position of the press-fitting part 13 is closer to the base part than the bending position of the sandwiching pieces 4a and 4b so that the press-fitting part 13 can be press-fitted between the sandwiching pieces 4a and 4b. As will be described later, after the cable core wire is temporarily held, the press-fitting portion 13 is press-fitted between the sandwiching pieces 4a and 4b. Therefore, the wedge piece 12 is bent at the connection portion 12a with the base portion 2 so that the press-fitting portion 13 is not positioned between the sandwiching pieces 4a and 4b before the cable core wire is temporarily held. It extends so as to spread (upward).

  The temporary holding of the cable 100 by the terminal 1 will be described with reference to FIG. 4 and FIG. 6 and FIG. FIG. 6 is a perspective view showing the terminal 1 in a state where the core wire 104 of the cable 100 is inserted into the overlapping holes 8a and 8b and the cable 100 is temporarily held. FIG. 7 is a top view of the terminal 1 in a state where the cable 100 is temporarily held. FIG. 8 is a cross-sectional view of the AA cross section of FIG. 7 showing the terminal 1 in a state where the cable 100 is temporarily held. In FIG. 8, the core wire 104 of the cable 100 is omitted for convenience.

  In order to temporarily hold the cable 100 to the terminal 1, first, the force in the inner direction 17 is applied to the holding pieces 4a and 4b, and the holding pieces 4a and 4b as shown in FIG. The holes 8a and 8b formed in the tip portions 7a and 7b of the sandwiching pieces 4a and 4b are at least partially overlapped when viewed from the cable extension side. The core wire 104 of the cable 100 is inserted into the overlapping holes 8a and 8b. For positioning the cable 100, as shown in FIGS. 6 and 7, the terminal of the cable 100 is connected until the cut surface on the terminal side of the outer cover 108 of the cable comes into contact with the contact surface 10 that is the outer surface of the tip 7 a. The core wire 104 is inserted into the overlapped holes 8a and 8b. Since the press-fitting portion 13 of the wedge piece 12 is press-fitted between the sandwiching pieces 4a and 4b later, it is necessary to avoid the core wire 104 from interfering with the press-fitting portion 13 of the wedge piece 12. Therefore, in a state where the cut surface of the outer skin 108 is in contact with the contact surface 10 of the distal end portion 7a of the sandwiching piece 4a, the distal end 106 of the core wire 104 is positioned closer to the cable extension side than the position of the press-fit portion 13. It is desirable to determine the length of the exposed portion of the core wire 104 in advance. In the present embodiment, the core wire 104 of the cable is a single wire. However, the present invention is not limited to this. For example, the core wire 104 may be a stranded wire.

  When the core wire 104 is inserted into the overlapping holes 8a and 8b, the force applied in the inner direction 17 is removed. Since the sandwiching pieces 4a and 4b have elasticity at the base portions 5a and 5b and have a restoring force in the outer direction 18 in a state of being displaced inward, a part of the inner surfaces of the two holes 8a and 8b facing the outer direction 18 9a and 9b are in contact with the core wire 104 of the cable 100 and pinched. The sandwiching pieces 4a and 4b have resilience due to elasticity, but it is sufficient that the resilience is sufficient to temporarily hold (temporarily hold) the cable 100 until it is completely connected. It is. For example, the restoring force may be a force that does not come out due to the weight of the cable 100 itself, and may be such a degree that the cable 100 comes off by pulling the cable 100 with a predetermined force in the cable extending direction. Therefore, it is not necessary to use a member having high rigidity for the sandwiching pieces 4a and 4b, and the terminal 1 can be manufactured using a relatively inexpensive general material. Moreover, the core wire 104 and the terminal 1 are electrically connected when at least part 9a, 9b of the inner surface of the holes 8a, 8b is in contact with the core wire 104.

  As shown in FIG. 8, in the state where the holding pieces 4a and 4b temporarily hold the cable 100, the width 13a of the press-fit portion 13 is larger than the distance 4c between the convex portions 11a and 11b, and the press-fit portion 13 is If it tries to insert between 11a and 11b, the press-fit part 13 will interfere with convex part 11a, 11b. In order to insert (press-fit) the press-fit portion 13 between the convex portions 11a and 11b, a force perpendicular to the displacement direction of the sandwiching pieces 4a and 4b and inward (press-fit direction 19) is applied to the wedge piece 12, The sandwiching pieces 4 a and 4 b must be separated from each other in the outer direction 18 through the press-fitting portion 13. At this time, since the core wire 104 is inserted into the overlapped holes 8a and 8b, the force for separating the sandwiching pieces 4a and 4b by press-fitting the press-fitting portion 13 becomes a force for tightening the core wire 104 (tightening force). Thus, the terminal 1 and the cable 100 are completely connected. The press-fitting operation may be performed by pressing the back surface 15 of the wedge piece 12 directly by the operator's hand, or pressing the back surface 15 using the housing of the electrical connector used together with the terminal 1 as will be described later. It may be done by doing. At the distal end portion 14 of the press-fit portion 13, the width is narrower toward the distal end, while the side surfaces 11c and 11d of the convex portions 11a and 11b are curved surfaces. Therefore, the force in the press-fitting direction 19 applied to the wedge piece 12 through the contact surface between the side surfaces 14a, 14b on the sandwiching pieces 4a, 4b side of the tip portion 14 and the side surfaces 11c, 11d of the convex portions 11a, 11b is It is efficiently decomposed into a force in the outer direction 18, that is, a force for separating the holding pieces 4a and 4b. Further, the point that the tip end portion 14 of the press-fit portion 13 is thin and the side surfaces 11c and 11d of the convex portions 11a and 11b are curved are that the press-fit portion 13 is sandwiched between the sandwiching pieces 4a and 4b. It is also helpful to guide to a predetermined position and facilitate press-fitting.

  Providing the convex portions 11a and 11b can reduce the width of the wedge piece 12, which leads to a reduction in material costs. Further, the convex portions 11a and 11b also serve to increase the strength of the sandwiching pieces 4a and 4b, and deformation or breakage of the sandwiching pieces 4a and 4b even when receiving a force in a direction away from the wedge piece 12 (outward direction 18). Can be prevented. In the present embodiment, the wedge piece 12 has the configuration as described above, but in the present invention, the wedge piece 12 may have a different configuration as long as the press-fitting portion can be press-fitted between the sandwiching pieces. For example, the wedge piece may not be integral with the base portion but may be a separate part. In that case, the wedge piece may be configured only by a portion corresponding to the press-fitting portion 13 in the present embodiment.

  9 and 10 show the terminal 1 in a state where the wedge piece 12 is press-fitted between the pair of sandwiching pieces 4a and 4b and the cable 100 is completely connected. FIG. 9 is a perspective view, and FIG. 10 is a top view.

  With the cable 100 temporarily held (see FIGS. 6 to 8), the wedge piece 12 is press-fitted between the holding pieces 4a and 4b from the direction 19 perpendicular to the displacement direction of the holding pieces 4a and 4b. The cable 100 and the terminal 1 as shown are completely connected. As described above, when the wedge piece 12 is press-fitted between the sandwiching pieces 4a and 4b, the sandwiching pieces 4a and 4b receive a force from the wedge piece 12 in a direction away from each other (outward direction 18), and the holes 8a and 8b. However, the core wire 104 can be clamped more strongly than in the temporary holding state via the portions 9a and 9b facing the outside direction 18 of the inner surface in contact with the core wire 104. That is, when the wedge piece 12 is press-fitted between the sandwiching pieces 4a and 4b, the overlapped holes 8a and 8b are designed to be slightly smaller than the thickness of the core wire 104 in a state where no force is applied. The portions 9a and 9b of the inner surfaces of the two holes 8a and 8b facing the outer side 18 sandwich the core wire 104, and the tightening force of the core wire 104 is strengthened. More specifically, the distance between the overlapping holes 8a and 8b in the holding direction (displacement direction) is smaller than the diameter of the core wire 104, whereby the cable core wire 104 is held. Conversely, since the overlapped holes 8a and 8b are too small to damage or cut the core wire 104, the core wire 104 overlaps to such an extent that it can withstand the force from the inner surfaces 9a and 9b due to elastic change. It is desirable to design the size of the holes 8a and 8b. The terminal 1 does not use the elasticity of a metal such as a spring, but presses the wedge piece 12 between the sandwiching pieces 4a and 4b to fix the cable 100. Therefore, the terminal 1 does not need to be manufactured using a member having high rigidity, and can be manufactured using a relatively inexpensive general material. In addition, since connection is not performed using a part that occupies a wide space such as a spring, the terminal 1 can be miniaturized and can be made of a small amount of material.

  The tightening force can be adjusted by adjusting the protruding amount of the convex portions 11a and 11b. This is because the amount of interference between the protrusions 11a and 11b and the press-fitting portion 13 is determined by the amount of protrusion of the protrusions 11a and 11b, and thus the tightening force increases by increasing the amount of interference. For example, even after the mold for punching the terminal 1 is determined, the optimum tightening force for holding the cable can be determined by adjusting the protruding amount of the convex portions 11a and 11b. As described above, in a state where the wedge piece 12 is press-fitted between the sandwiching pieces 4 a and 4 b, the core wire 104 is exposed so that the tip 106 of the core wire 104 is positioned on the cable extension side with respect to the press-fit portion 13 of the wedge piece 12. It can be understood from FIG. 10 that the length of the portion is adjusted.

  FIG.11 and FIG.12 is sectional drawing which shows a mode that the terminal 1 is inserted in the housing 21 of the electrical connector 20 by one Embodiment of this invention. 11 and 12 show a cross section of the housing 21, the cord can 30 fitted to the housing 21, and the push-in member 31, but the terminal 1 and the cable 100 show an appearance, not a cross section. In FIG. 11, the cord can 30 is in a state before being fitted into the housing 21, and the terminal 1 is attached to the cable 100 by temporary holding. FIG. 12 shows a state in which the housing 21 and the cord can 30 are fitted, and the terminal 1 is mounted on the housing 21. FIG. 13 is an enlarged view showing a region B in FIG. 11 in an enlarged manner.

  The electrical connector 20 includes a housing 21 and a cord can 30 that fits into the housing 21. The housing 21 has a substantially cylindrical shape. Further, the cord can 30 has a substantially cylindrical shape. When the housing 21 and the cord can 30 are fitted, a part of the housing 21 is located inside the cord can 30. The housing 21 and the cord can 30 are both made of resin. The electrical connector 20 can hold a plurality of cables. In FIGS. 11 and 12, only two cables are shown, but in the present invention, the number of cables held by the electrical connectors is There is no limit. The plurality of cables 100 are bundled by a tube 112 for easy handling.

  The cord can 30 has a substantially cylindrical pushing member 31 therein. A through hole 33 is provided in the main body portion 32 of the pushing member 31, and the cable 100 in a state before the terminal 1 is attached is inserted into the through hole 33 and held by a frictional force with the inner wall of the through hole 33. . FIG. 11 shows two cables 100 held by the pushing member 31. Here, for the sake of explanation, the core wire 104 of the cable 100 shown in the region A is shown as being unconnected to the terminal 1. The cable 100 shown in the region B is connected to the terminal 1 in a temporary holding state. Around the through hole 33, a protruding portion 34 that protrudes from the main body portion 32 toward the housing 21 is provided. By attaching the terminal 1 so that the abutting surface 10 of the terminal 1 abuts against the pressing surface 35 at the tip of the projecting portion 34, the cable extending direction of the terminal 1 depends on the degree of projection of the projecting portion 34. Can be adjusted. In the present embodiment, since the pressing surface 35b in the region B is closer to the housing 21 than the pressing surface 35a in the region A, the core wire 104 of the cable 100 attached to the through hole 33 in the region B is used. On the other hand, prior to the core wire 104 of the cable 100 attached to the through-hole 33 in the region A, it is electrically connected to the connection destination circuit. Therefore, as in the electrical connector 20, it is possible to determine the connection order of the cables held by the connector by changing the positions of the terminals 1 in the cable extending direction. For example, by using the terminal whose tip is closest to the housing side for the ground line, the terminal secondly located on the housing side is used for the power supply, and the remaining terminals are used for the signal line. Can be electrically connected in the order of ground, power supply, and signal. When the two circuits are electrically connected in the above order, for example, malfunction of the circuit due to unstable circuit potential, such as a state in which only the signal is connected, damage of electronic components, etc. Can be prevented. In the present embodiment, the cord can 30 and the pushing member 31 are separate parts, but they can be integrated as a single part.

  When the cable 100 is held by the pushing member 31, the terminal 1 is attached to the cable 100 in a temporarily held state. A terminal insertion hole 22 is provided in the housing 21 at a position corresponding to the through hole 33 of the pushing member 31, and the contact portion 3 of the terminal 1 is inserted into the terminal insertion hole 22 (see FIG. 11B). State shown surrounded). Then, the cord can 30 is moved in the fitting direction until the protrusion 36 on the inside of the cord can 30 is fitted with the groove portion 23 provided on the outside of the housing 21. The cord can 30 is fixed to the housing 21 by fitting the protrusion 36 and the groove 23. Moreover, since the pushing member 31 is pushed into the housing 21 side by the surface on the housing 21 side of the raised portion 37 that rises on the inner wall of the cord can 30, the operator does not need to push the pushing member 31 directly.

  The terminal 1 is inserted into the terminal insertion hole 22 in accordance with the fitting between the housing 21 and the cord can 30. Specifically, the contact surface 10 of the terminal 1 is pressed by the pressing surface 35, and the terminal 1 is inserted into the housing 21. When the cable 100 is held in the through hole 33, the position of the cable 100 in the cable extending direction is adjusted, and the cut surface of the outer skin 108 and the pressing surface 35 are made continuous to form a continuous surface. The contact surface 10 of the terminal 1 can be pressed and inserted into the housing 21 by the continuous surface.

  The inner diameter of the terminal insertion hole 22 is smaller than the outer shape of the terminal 1 before the press-fitting portion 13 is press-fitted between the sandwiching pieces 4a and 4b. Therefore, when the terminal 1 is mounted in the terminal insertion hole 22, the back surface 15 of the wedge piece 12 is pressed inward by the inner wall of the terminal insertion hole 22, and the press-fitting portion 13 of the wedge piece 12 is clamped. It is press-fitted between the pieces 4a and 4b. Therefore, in the present embodiment, not only can the cable be connected to the terminal without using a special tool, but also the operation of attaching the terminal 1 to the housing 21, that is, the operation of fitting the cord can 30 to the housing 21. The cable 100 can be connected to the terminal 1 and the work becomes efficient.

  As shown in FIG. 13, a taper 24 is provided at the entrance of the terminal insertion hole 22. When the terminal 1 is inserted into the terminal insertion hole 22, the taper 24 contacts the back surface 15, displaces the wedge piece 12 inward, and presses it between the sandwiching pieces 4 a and 4 b. The taper 24 can efficiently divide the force applied to the back surface 15 in the inner direction. Therefore, the force for press-fitting the press-fitting portion 13 between the sandwiching pieces 4a and 4b is increased, and the force toward the cable extension side, that is, the force in the direction opposite to the insertion direction can be reduced. Then, it can be inserted into the terminal insertion hole 22. As a result, the work for fitting the cord can 30 to the housing 21 is facilitated. As the number of cables 100 held by the electrical connector 20 increases, the force required to fit the housing 21 and the cord can 30 increases, so when the electrical connector holds many cables 100 It is particularly effective to provide a taper in the terminal insertion hole. Further, in the electrical connector 20 having a plurality of terminals 1, when the positions of the pressing surfaces 35 in the cable extending direction are different, the force for press-fitting the press-fitting portion 13 between the sandwiching pieces 4a and 4b is simultaneously applied to all the terminals. Therefore, the force required for fitting the cord can 30 to the housing 21 can be reduced. As shown in FIG. 12, when the terminal 1 is inserted into the terminal insertion hole 22, the upward movement of the wedge piece 12 is restricted by the back surface 15 coming into contact with the inner surface of the terminal insertion hole 22. For this reason, the wedge piece 12 does not come off between the sandwiching pieces 4a and 4b.

  In FIG. 14, the terminal 40 for electrical connectors which is another embodiment of this invention is shown. The terminal 40 has many parts in common with the terminal 1, and the description of the common parts is omitted. The wedge piece 52 of the terminal 40 has a rib 57 that protrudes toward the outside (front side in the drawing) on the back surface 55 and extends in the longitudinal direction. When the terminal 40 is inserted into the terminal insertion hole 22 of the housing, the rib 57 reduces the contact area between the terminal 40 and the inner wall of the terminal insertion hole 22, thereby reducing the frictional force that the terminal 40 receives, The terminal 40 can be inserted into the terminal insertion hole 22 with a small force, and workability can be improved.

  Further, the press-fitting portion 53 of the wedge piece 52 has locking projections 58a and 58b on the side surfaces of the sandwiching pieces 44a and 44b. The locking projections 58a and 58b are formed in the protruding portions 51a and 44b provided on the sandwiching pieces 44a and 44b in a state after the press-fit portion 53 of the wedge piece 52 is press-fitted between the sandwiching pieces 44a and 44b (completely connected state). Engage with 51b. That is, in the state after the press-fitting of the press-fitting portion 53, the locking protrusions 58a and 58b are positioned below the convex portions 51a and 51b (the back side of the paper). When the locking projections 58a and 58b are engaged with the convex portions 51a and 51b, the upward movement of the wedge piece 52 is restricted, and it is difficult for the wedge pieces 52a and 44b to come off. It can be prevented from coming off.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

DESCRIPTION OF SYMBOLS 1 Electric connector terminal 2 Base | substrate part 2a End part 3 nipping piece side Contact part 4a, 4b Nipping piece 5a, 5b Base part 6a, 6b Intermediate | middle part 7a, 7b Tip part 8a, 8b Hole 9a, 9b Outside direction of inner surface of hole 10 facing abutment surface 11a, 11b Protruding portion 11c, 11d Protruding side surface 12 Wedge piece 12a Connection portion 13 Press-fitting portion 13a Press-fitting portion width 14 Tip portion 14a, 14b Tip portion side surface 15 Back face 16 Longitudinal direction 17 Inner direction 18 Outer direction 19 Press-fit direction (inner direction perpendicular to the displacement direction of the clamping piece)
20 Electrical connector 21 Housing 22 Terminal insertion hole 23 Groove portion 24 Taper 30 Cord can 31 Push member 32 Main body portion 33 Through hole 34 Protruding portion 35 Pressing surface 36 Protruding portion 37 Raised portion 40 Electrical connector terminals 44a and 44b Nipping piece 51a, 51b Convex portion 52 Wedge piece 53 Press-fit portion 55 Back surface 57 Ribs 58a, 58b Protrusion for locking 100 Cable 104 Core wire 106 Tip 108 Outer skin 112 Tube

Claims (9)

A base part;
A pair of clamping pieces extending from one end of the base portion to the cable extension side, at least one of which can be displaced inward,
A wedge piece,
With
Each of the pair of sandwiching pieces has a tip portion bent inward,
Each of the pair of sandwiching pieces has a hole in the tip portion,
In a state where at least one of the pair of sandwiching pieces is displaced inwardly, the hole overlaps at least partly,
In a state where the core wire of the cable is inserted into the overlapped hole, the wedge piece can be press-fitted between the pair of sandwiching pieces.
Terminal for electrical connector. In a state where at least one of the pair of sandwiching pieces is displaced inward, at least one of the pair of sandwiching pieces has a restoring force in the outer direction.
The electrical connector terminal according to claim 1. The wedge piece extends from the position perpendicular to the extension position of the pair of clamping pieces to the cable extension side at the one end of the base portion.
The wedge piece is bent inward and has a press-fit portion that can be press-fitted between the pair of sandwiching pieces.
The electrical connector terminal according to claim 1, wherein the terminal is an electrical connector. The wedge piece has a rib on the back surface,
The electrical connector terminal according to claim 3. Each of the pair of sandwiching pieces has a protruding portion protruding inward at an interference portion with the wedge piece,
The electrical connector terminal according to any one of claims 1 to 4, wherein: The wedge piece has a locking projection on a side surface of the pair of sandwiching pieces,
The locking protrusion engages with the convex portion;
The electrical connector terminal according to claim 5. An electrical connector,
The electrical connector terminal according to any one of claims 1 to 6,
A housing having a terminal insertion hole for storing the electrical connector terminal;
Having an electrical connector. The terminal insertion hole presses the wedge piece inward by an inner wall,
The electrical connector according to claim 7. A cord can fitted into the housing;
A pressing member located in the cord can,
The pushing member has a through hole for holding a cable,
The pushing member has a protruding portion that protrudes toward the housing side around the through hole,
The protrusion has a pressing surface at the tip,
The pressing surface is a contact surface on the cable extension side of the distal end portion of the electrical connector terminal in a state in which the core wire of the cable is inserted into the overlapped hole when the housing and the cord can are fitted. Press
The electrical connector according to claim 7 or 8, wherein

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