JP2009277571A - Pressure contact connector and waterproof structure of connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure contact connector capable of securing high waterproof performance. <P>SOLUTION: This pressure contact connector has a resin housing 10 and a cover 50 for sealing an inside space surrounded by peripheral walls by uniting the mutual tips of the mutually opposed peripheral walls 15 and 55 in a butting state. Half-split-shaped electric wire inserting grooves 13 and 53 forming a circular hole when being united, are arranged on the tip of the respective peripheral walls of the housing and the cover. A pressure contact terminal 20 is arranged inside the peripheral wall of the housing. When ultrasonic vibration is applied to the tip of the peripheral walls of the housing and the cover and the inner periphery of the electric wire insetting groove in a state of uniting the housing and the cover, mutual butting parts on the tip of the peripheral walls are welded by concentrating ultrasonic energy, and a triangular rib to be welded to an insulating covering of a covered conductor inserted into the electric wire inserting hole is respectively arranged. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pressure contact connector for securing a high waterproof property and a waterproof structure of a connector using the pressure contact connector.

  For example, in the conventional pressure contact connector described in Patent Document 1, as shown in FIG. 7, as shown in FIG. 7, a portion where the electric wire W is press connected to the pressure contact terminal 120 or a portion where the electric wire W is inserted into the housing 110 is waterproof. In addition, a rubber seal member 130 is mounted between the housing 110 and the cover 150.

  The pressure contact terminal 120 is disposed in the upper surface recess 112 of the housing 110, and a seal member in which a space in which the pressure contact terminal 120 is disposed is mounted between the housing 110 and the cover 150 by combining the cover 150 with the housing 110. 130 can be sealed. An opening 132 is formed through the center of the seal member 130 so that the electric wire W can be pressed against the press contact terminal 120 in the opening 132 with the seal member 130 mounted. In addition, a wire insertion port (not shown) is provided in the peripheral wall portion of the seal member 130, and the compressive force due to the union of the housing 110 and the cover 150 is applied to the seal member 130 with the electric wire W inserted through the wire insertion port. , The gap between the electric wire W and the housing 110 and the cover 150 can be sealed.

Further, for example, in Patent Document 2, after the electric wire is press-connected to the press-contact terminal in the housing, a sealing material is injected into the gap between the electric wire and the housing to solidify, so that the internal space of the housing or the gap between the housing and the electric wire is The technology for waterproofing is described.
JP 2001-155816 A JP 2004-349071 A

  By the way, in the prior art described in Patent Document 1 in which the rubber seal member is compressed and mounted between the housing and the cover, between the seal member and the housing and the cover, or between the seal member and the outer periphery of the electric wire. There is a possibility that a gap is likely to be formed in the surface and high waterproof performance cannot be exhibited. In addition, if a low-hardness seal member is used to make it easier to fill the gap, the repulsive force is lowered, so that the waterproof reliability may also be lowered.

  Moreover, the prior art described in Patent Document 2 in which the sealing material is injected after the pressure contact has a problem that the waterproof performance is deteriorated when the filling state is not good.

  In view of the above circumstances, an object of the present invention is to provide a pressure contact connector capable of exhibiting high waterproof performance and a waterproof structure of a connector using the pressure contact connector.

  The pressure contact connector according to the first aspect of the present invention includes a resin housing and a cover for sealing an inner space surrounded by the peripheral wall by being united in a state where the front ends of the peripheral walls facing each other are abutted with each other. In addition, the front end of each peripheral wall of the housing and the cover has a halved shape that forms a circular hole when the housing and the cover are combined so that a covered electric wire extending in a direction crossing the direction in which the housing and the cover are combined can be attached. The wire insertion groove is provided, and on the inner side of the peripheral wall of the housing, a press contact terminal for press-connecting the covered electric wire in a state of passing through the wire insertion groove is provided, and the tip of the peripheral wall of the housing and the cover and the When the ultrasonic vibration is applied to the housing and the cover in a state where the housing and the cover are combined with each other, an ultrasonic energy is applied to the inner periphery of the wire insertion groove. By concentrating ruggies, the butted portions at the tips of the peripheral walls are welded to each other, and triangular ribs are provided for welding to the insulating coating of the covered wire passed through the wire insertion groove. .

  The invention according to claim 2 is the press-connecting connector according to claim 1, wherein the wire insertion groove sandwiches the press-contact terminal so that the covered wire can be attached to the peripheral wall of the housing and the cover in a through state. It is arranged at a position.

  The invention of claim 3 is the press-connecting connector according to claim 1 or 2, wherein a plurality of the press-contact terminals are arranged side by side in a direction orthogonal to the extending direction of the covered electric wire, and the adjacent press-contact is provided in the housing. A partition wall located between the terminals is integrally provided.

  The waterproof structure of the connector of the invention of claim 4 is a waterproof structure of the connector using the press contact connector according to any one of claims 1 to 3, wherein the covered electric wire is passed through the electric wire insertion groove of the housing. The cover wire is press-contacted to the press contact terminal, the cover is united with the housing from above, and ultrasonic vibration is applied to the housing and the cover in this state, so that the tip of the peripheral wall of the housing and the cover The abutting portions are welded to each other, and the inner periphery of the wire insertion groove is welded to the insulating coating of the covered wire, so that the portion where the covered wire is pressed against the pressure contact terminal is waterproofed.

  According to the first aspect of the present invention, since the gap between the housing, the cover and the electric wire can be completely sealed by ultrasonic welding, high waterproof performance can be exhibited. Further, since the seal member can be omitted, it is possible to reduce the size and weight and reduce the cost.

  According to the invention of claim 2, even when the electric wire is pressed in the through state, the gap between the housing, the cover and the electric wire can be completely sealed, and high waterproof performance can be exhibited.

  According to the invention of claim 3, even when a plurality of electric wires are press-contacted, the gap between the housing, the cover and the electric wires can be completely sealed, and high waterproof performance can be exhibited.

  According to invention of Claim 4, since the clearance gap between a housing, a cover, and an electric wire is completely sealed by ultrasonic welding, high waterproof performance can be exhibited. Further, since the seal member can be omitted, it is possible to reduce the size and weight and reduce the cost.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an exploded perspective view of a pressure contact connector according to an embodiment before pressure-contacting a covered wire, FIG. 2 is a partially enlarged perspective view showing a state where one covered wire is pressure-contacted to a pressure contact terminal of a housing, and FIG. FIG. 4 is a partially enlarged front view showing the relationship between the housing, the cover, the press contact terminal, and the covered electric wire. FIG. 5 is an ultrasonic weld with all the wires pressed onto the press contact terminal and the cover covered. FIG. 6 is a cross-sectional view taken along arrow VI-VI in FIG. 5.

  As shown in FIG. 1, the pressure contact connector according to the embodiment includes a resin housing 10, a cover 50, and a plurality of pressure contact terminals 20. An electric wire connecting portion 11 is provided on the upper portion of the housing 10, and a cover 50 can be attached to the electric wire connecting portion 11 from above. For this reason, the wire connection portion 11 and the cover 50 are each provided with a lock projection 12 that locks to each other and a lock frame 52 with a hole 52a into which the lock projection 12 fits.

  As shown in FIGS. 1 and 2, the electric wire connection portion 11 of the housing 10 is provided with an oval peripheral wall 15 protruding upward, and a concave terminal accommodating space 14 is secured on the inner side surrounded by the peripheral wall 15. Has been. The terminal accommodating space 14 is partitioned into a plurality by the partition wall 19.

  As shown in FIG. 3, the cover 50 is formed by integrally forming a lock frame 52 extending downward at both ends of the cover main body 51. The cover main body 51 includes a ceiling wall 54 and a peripheral wall 55 extending downward from the peripheral edge thereof. have.

  The housing 10 and the cover 50 are combined with the upper and lower ends (tips) of the peripheral walls 15 and 55 facing each other but are sealed, thereby sealing the inner terminal accommodating space 14 surrounded by the peripheral walls 15 and 55. Can be done.

  Moreover, the housing 10 and the cover 50 are united so that the covered electric wire W extended in the direction which cross | intersects the uniting direction of the housing 10 and the cover 50 can be attached to the upper end and lower end of each surrounding wall 15 and 55 of the housing 10 and the cover 50. The half-shaped electric wire insertion grooves 13 and 53 that sometimes form a circular hole are provided.

  These wire insertion grooves 13 and 53 are provided corresponding to the terminal accommodating spaces 14 partitioned by the partition wall 19, and each terminal accommodating space 14 is covered with the wire insertion grooves 13 and 53. A press contact terminal 20 for press-connecting the electric wire W is provided. As shown in FIG. 4, the press contact terminal 20 is formed by forming a slit 22 for receiving the core wire Wa between a pair of press contact blades 21, 21 that bite into the insulation coating Wb when the covered wire W is pushed from above. .

  A plurality of the press contact terminals 20 are arranged side by side in a direction orthogonal to the extending direction of the covered electric wire W, and the partition wall 19 is located between the adjacent press contact terminals 20. Moreover, the electric wire insertion grooves 13 and 53 are arrange | positioned in the position of the both sides which pinch | interpose the press-contact terminal 20 so that the covered electric wire W can be mounted | worn in a through state.

  In addition, ultrasonic vibration is applied to the housing 10 and the cover 50 in a state where the housing 10 and the cover 50 are combined with the distal ends of the peripheral walls 15 and 55 of the housing 10 and the cover 50 and the inner periphery of the wire insertion grooves 13 and 53. The triangular ribs welded to the covering Wb of the covered wire W passed through the wire insertion grooves 13 and 53 while welding the butted portions of the peripheral walls 15 and 55 by concentrating ultrasonic energy. 17, 18, 16, and 56 are provided, respectively.

  Next, the assembly procedure will be described.

  First, the covered wire W is press-connected to the press contact terminal 20 in a state where the covered wire W is passed through the wire insertion groove 13 of the housing 10. When all the covered electric wires W are connected, the cover 50 is put on the housing 10 from above, and the lock frame 52 is fitted into the lock protrusion 12 to be combined.

  In this state, the tips of the triangular ribs 16 and 56 on the inner periphery of the wire insertion grooves 13 and 53 are in contact with the outer periphery of the insulation coating Wb of the covered wire W. The ribs 17 and 18 of the peripheral wall 15 are in contact with the mating ends of the peripheral wall of the cover 50. Accordingly, ultrasonic vibration is applied to the housing 10 and the cover 50 in this state. Then, the ultrasonic energy is concentrated on the triangular ribs 17, 18, 16, 56, the butted portions at the ends of the peripheral walls 15, 55 of the housing 10 and the cover 50 are welded together, and the wire insertion grooves 13, 53 Is welded to the insulating coating Wb of the coated electric wire W.

  As a result, the portion where the covered wire W is pressed against the press contact terminal 20 and the gap between the housing 10 and the cover 50 and the covered wire W are sealed, and the waterproof structure of the connector is completed.

  Thus, since the clearance gap between the housing 10, the cover 50, and the covered electric wire W can be sealed completely by ultrasonic welding, high waterproof performance can be exhibited. Further, since the rubber seal member that has been conventionally used can be omitted, it is possible to reduce the size and weight and to reduce the cost. Moreover, since the connector of this embodiment is a type which penetrates an electric wire, a connector can also be provided in the middle of the covered electric wire W.

  In addition, like the prior art example of FIG. 7, this invention can also be comprised as a connector provided in the terminal part of a some electric wire. In that case, the wire insertion grooves 13 and 53 may be provided only on one side of the press contact terminal 20.

It is explanatory drawing of embodiment of this invention, and is an exploded perspective view of the press-contact connector before press-contacting a covered electric wire. FIG. 5 is a partial enlarged perspective view showing a state in which one covered electric wire is press-contacted to a press-contact terminal of a housing in a component configuration diagram of the press-connect connector. It is the components block diagram of the same pressure contact connector, and is the perspective view which looked at the cover from the bottom. It is explanatory drawing of the same pressure welding connector, and is a partial expansion front view which shows the relationship between a housing, a cover, a pressure welding terminal, and a covered electric wire. It is an external appearance perspective view which shows the state after press-contacting all the electric wires to the said press-contact terminal, and covering with a cover and performing ultrasonic welding. It is VI-VI arrow sectional drawing of FIG. It is a disassembled perspective view of a prior art example.

Explanation of symbols

W covered wire Wb Insulating cover 10 Housing 14 Terminal receiving space 13, 53 Wire insertion groove 15, 55 Peripheral wall 16, 17, 18, 56 Triangular rib 19 Partition wall 20 Pressure contact terminal 50 Cover

Claims (4)

It has a resin housing and a cover that seal the inner space surrounded by the peripheral wall by being united in a state where the front ends of the peripheral walls facing each other are abutted,
The front end of each peripheral wall of the housing and the cover has a halved shape that forms a circular hole when the housing and the cover are combined so that a covered electric wire extending in a direction intersecting with the combining direction of the housing and the cover can be attached. An electric wire insertion groove is provided,
On the inner side of the peripheral wall of the housing, a press contact terminal for press-connecting the covered wire in a state of passing through the wire insertion groove is provided,
By concentrating ultrasonic energy on the tip of the peripheral wall of the housing and the cover and the inner periphery of the wire insertion groove when ultrasonic vibration is applied to the housing and the cover in a state where the housing and the cover are combined. The crimping connector is characterized in that triangular ribs are provided to weld the butted portions at the distal ends of the peripheral walls to the insulating coating of the covered electric wire passed through the electric wire insertion groove. The press-connecting connector according to claim 1,
The pressure contact connector, wherein the wire insertion grooves are arranged on both sides of the pressure contact terminal so that the covered wire can be mounted in a through state on the peripheral walls of the housing and the cover. The press-connecting connector according to claim 1 or 2,
A plurality of the press contact terminals arranged in a direction orthogonal to the extending direction of the covered electric wire, and a partition wall located between the adjacent press contact terminals is integrally provided in the housing. connector. In the waterproof structure of the connector using the pressure contact connector according to any one of claims 1 to 3,
The covered electric wire is press-connected to the press contact terminal in a state where the covered electric wire is passed through the electric wire insertion groove of the housing, and the cover is united with the housing from above, and ultrasonic vibration is applied to the housing and the cover in that state. Is applied to each other so that the end of the peripheral wall of the housing and the cover are welded to each other, and the inner periphery of the wire insertion groove is welded to the insulating coating of the covered wire, so that the cover is pressed against the press contact terminal. A waterproof structure for a connector, characterized in that the portion where the electric wire is pressed is waterproofed.

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