JP5229180B2 - Connection structure - Google Patents

Description

  The present invention relates to a connection structure that may be used for a connector of a power harness used for an eco-car such as a hybrid vehicle and an electric vehicle, and particularly used to transmit a large amount of power.

  In recent years, significant progress has been made, for example, in hybrid vehicles, electric vehicles, etc., when transferring a large amount of power for connecting devices, such as between a motor and an inverter, or between an inverter and a battery. For example, a power harness used in the above-described configuration includes, on one end thereof, a male terminal and a male side connector portion including a first terminal housing that accommodates the male terminal, a female terminal connected to the male terminal, and the female terminal. A connector having a two-divided configuration with a female connector portion including a second terminal housing to be accommodated is provided (see, for example, Patent Document 1).

  In recent years, such eco-cars have been reduced in weight for all parts for the purpose of improving energy-saving performance. However, one of the effective means for reducing the weight is to reduce the size. I hit it.

  Therefore, as a known technique, for example, there is a technique as disclosed in Patent Document 2.

  The technique disclosed in Patent Document 2 is a vehicle that connects a connection terminal of a multi-phase conductive member drawn from a motor for driving a vehicle and a connection terminal of a multi-phase power line cable drawn from an inverter that drives the motor. In the electrical connection structure, the connection terminal of each phase of the conductive member and the connection terminal of each phase of the corresponding power line cable are superposed, and the insulating member is disposed on the surface opposite to the superposition surface of the connection terminal This is a technique in which the connection terminals and the insulating members of the respective polymerized phases are fastened and fixed in the polymerization direction by a single bolt provided at a position penetrating them.

  That is, the technique of Patent Document 2 is a method in which connection terminals are connected to each other by clamping a plurality of contact points between connection terminals, which are overlapping surfaces of connection terminals, by tightening a single bolt in the overlap direction. However, such a configuration is effective in that it is easy to reduce the size as compared with the technique disclosed in Patent Document 1.

JP 2009-070754 A Japanese Patent No. 4037199

  However, the technique of Patent Document 2 has the following problems.

  Since the technology of Patent Document 2 is a connection configuration in which a plurality of contact points between connection terminals are sandwiched at a time to fix the connection terminals at the contact points and are electrically connected to each other. It was difficult to apply the same pressing force to each other, and as a result, the coupling force of each contact became unstable. This instability of the coupling force becomes a negative factor when applied to an automobile in which vibration is likely to occur.

  Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to provide a connection structure capable of stabilizing the coupling force of each contact.

  The present invention has been devised to achieve the above object, and includes a first terminal housing in which a plurality of first connection terminals are arranged and stored, and a first terminal housing in which a plurality of second connection terminals are arranged and stored. Each of the plurality of first connection terminals and each of the plurality of second connection terminals is paired with each other when the first terminal housing and the second terminal housing are fitted together. In the connection structure in which the first connection terminals and the second connection terminals are alternately arranged and facing each other, the plurality of the plurality of the first connection terminals and the second connection terminals are insulated from each other. The first connection terminal and the plurality of second connection terminals are respectively pressed to fix the first connection terminal and the second connection terminal at the respective contacts. Connecting means connected, the connecting means being arranged in alignment with each of the first connection terminals of each stage and having a threaded portion, the second connection facing the first connection terminals A plurality of movable members for contacting the terminals, and a press for pressing the contact points above the plurality of first connection terminals while screwing into each of the threaded portions of the movable members arranged in stages. A non-conductive connecting member having a shaft portion formed respectively, and when the connecting member is screwed into each of the screwing portions of the movable member, the pressing portion of each step is The diameters of the screwed portions of the movable members of the respective stages and the pressing portions of the respective stages are made to differ stepwise so that the screwed portions of the movable members are sequentially inserted and screwed into the corresponding screwed portions. It is the connection structure characterized by this.

  Further, the connection member is made of metal, and includes a main body portion that forms a central axis, and an insulating body that covers an outer periphery of the main body portion and forms the pressing portion.

  The movable member may have a ratchet structure that idles when a predetermined tightening torque is applied.

  Each of the second connection terminals is supported by being aligned at a predetermined position by a plurality of support members provided in the second terminal housing.

  Further, when the first terminal housing and the second terminal housing are fitted to the first terminal housing and / or the second terminal housing, the first terminal housing and the second terminal housing A waterproof housing structure for sealing the gap is provided.

  The first terminal housing and / or the second terminal housing has a cable insertion hole for inserting a cable connected to each of the plurality of first connection terminals and / or the plurality of second connection terminals. Each of the cable insertion holes is provided with a cable waterproof structure that seals between the cable and the first terminal housing and / or between the cable and the second terminal housing. It is characterized by that.

  In addition, each contact point between the first connection terminal and the second connection terminal transmits electricity of different voltage and current.

  The first terminal housing and the second terminal housing may be fitted so that the first connection terminal and the second connection terminal intersect and contact each other in a plan view.

  The connection means further includes a fixing means for fixing the connection member to the first terminal housing and / or the second terminal housing, and the fixing means includes the first terminal housing and the second terminal housing. When the terminal housing is fitted, the respective contacts are pressed and fixed, and the first terminal housing and the second terminal housing are fastened together and fixed.

  The fixing means includes a screw portion formed at a distal end portion of the connection member and a screw hole formed in the first terminal housing and / or the second terminal housing and screwed into the screw portion. It is characterized by.

  According to the present invention, the coupling force of each contact can be stabilized.

It is side sectional drawing which shows the connector which concerns on one embodiment of this invention. It is a sectional side view which shows a male side connector part. It is a figure which shows a 1st connection terminal, (a) is a side view, (b) is a top view. It is a sectional side view which shows a female side connector part. It is a figure which shows a 2nd connection terminal, (a) is a side view, (b) is a top view. It is a figure which shows a connection member, (a) is a side view, (b) is a sectional side view. It is a figure explaining the connector principal part of FIG. It is a figure explaining the connection using the connector of FIG. 1, (a) is a sectional side view, (b) is a top view. It is a figure explaining the connection using the connector of FIG. 1, (a) is a sectional side view, (b) is a front view of a male side connector part, (c) is a front view of a female side connector part. It is a figure explaining the effect of the connector of FIG. (A) is a figure which shows the modification of a 2nd connection terminal, (b) is a figure explaining the connection using the 2nd connection terminal of (a). (A), (b) is a figure which shows the modification of the connector of FIG. It is a figure which shows the modification of the connector of FIG. It is a figure which shows a movable member, (a) is a front view, (b) is a top view, (c) is a side view. It is a figure which shows a movable member, (a) is a sectional side view, (b) is the sectional view on the AA line of (a). It is a figure which shows a spring, (a) is a top view, (b) is a front view. It is a figure explaining the manufacturing method of a movable member. (A), (b) is a figure explaining the manufacturing method of a movable member. It is a figure explaining the manufacturing method of a movable member. (A), (b) is a figure which shows an example of the connection structure of this invention.

  Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

  A connector will be described as an example of the connection structure of the present invention.

  FIG. 1 is a side sectional view showing a connector according to the present embodiment.

  As shown in FIG. 1, the connector 100 according to the present embodiment includes a male connector 1 and a female connector 2, and a plurality of power lines can be obtained by fitting these connectors 1 and 2 together. Are connected together.

  As shown in FIG. 2, the male-side connector portion 1 includes a conductive first terminal housing 4 in which a plurality (three) of first connection terminals (male terminals) 3 a to 3 c are arranged and housed. . Here, a terminal having a connecting member 38 to be described later is a male terminal, and a connector portion on the side having the male terminal is referred to as a male connector portion 1. That is, the first terminal housing 4 may be a male (male side housing) or a female (female side housing) as a housing. Here, the case where the 1st terminal housing 4 is a male side housing is demonstrated as an example.

  The first connection terminals 3a to 3c are connected to cables 5a to 5c, respectively. In these cables 5a to 5c, electricity of different voltage and / or current is transmitted. For example, in the present embodiment, a three-phase AC power line between the motor and the inverter is assumed, and ACs having different phases by 120 ° are transmitted to the cables 5a to 5c. These cables 5 a to 5 c are formed by forming an insulating layer 7 on the outer periphery of the conductor 6.

  Further, as shown in FIG. 3, each of the first connection terminals 3 a to 3 c is formed integrally with the caulking portion 8 and the caulking portion 8 that are caulked and connected to the conductor 6 exposed from the distal ends of the cables 5 a to 5 c. A round contact 9 and movable members 10a to 10c made of nuts provided on the lower surface (the lower surface in the figure) of the round contact 9;

  A circular hole 11 for inserting the connection member 38 is formed in the round contact 9. Further, a tapered portion 12 is formed at the tip of the round contact 9 in order to improve the insertability. In the present embodiment, the movable members 10a to 10c are nuts that do not have a ratchet structure, which will be described later, and have a female screw that is a threaded portion inside.

  Each of the first connection terminals 3 a to 3 c is preferably made of a metal having high conductivity such as silver, copper, or aluminum for the purpose of reducing power transmission loss in the connector 100.

  Referring to FIG. 2 again, the first terminal housing 4 is composed of a cylindrical body 13 having a bottomed end and a rectangular cross section.

  The outer peripheral portion on the opening side of the cylindrical body 13 is formed in a tapered shape in consideration of the fitting property with the female connector portion 2. In addition, a housing waterproof structure 14 that seals between the male connector portion 1 and the female connector portion 2 is provided on the outer peripheral portion on the opening side of the cylindrical body 13.

  The waterproof housing structure 14 includes a recess 15 formed in the outer peripheral portion on the opening side of the cylindrical body 13 and a packing 16 such as an O-ring provided in the recess 15.

  A plurality of cable insertion holes 17 for inserting the cables 5a to 5c connected to the first connection terminals 3a to 3c are formed on the bottom side (the left side in the drawing) of the cylindrical body 13. Each of the cable insertion holes 17 is provided with a cable waterproof structure 18 that seals between the cables 5 a to 5 c and the cylindrical body 13.

  The cable waterproof structure 18 includes a recess 19 formed in the opening surface of the cable insertion hole 17 that contacts the outer periphery of the cables 5 a to 5 c and a packing 20 such as an O-ring provided in the recess 19.

  A flange 21 having a fixing hole 49 (see FIG. 9) for fixing the male connector 1 to a housing such as a device is formed on the outer periphery on the bottom side of the cylindrical body 13. You may make it provide the packing etc. which seal between the apparatus and the male side connector part 1 in the edge peripheral part 22 at the bottom part side of the flange 21. FIG. In addition, this structure does not presuppose that the male connector part 1 is fixed to housing | casings, such as an apparatus, The flange 21 may be provided in the female connector part 2, and the male connector part 1 and the female connector 2 may be provided. Moreover, it is good also as a free state in which neither the male side connector part 1 nor the female side connector part 2 is fixed to housings, such as an apparatus.

  The cylindrical body 13 is preferably made of a metal such as aluminum having high electrical conductivity and thermal conductivity for light shielding performance, heat dissipation, and weight reduction of the connector 100, but may be formed of resin or the like. good.

  As shown in FIG. 4, the female connector 2 includes a second terminal housing 24 in which a plurality (three) of second connection terminals (female terminals) 23 a to 23 c are arranged inside. In addition, the connector part by the side which has a female terminal is called the female side connector part 2 here. That is, the second terminal housing 24 may be a male (male side housing) or a female (female side housing) as a housing. Here, the case where the 2nd terminal housing 24 is a female side housing corresponding to the 1st terminal housing 4 which is a male side housing is demonstrated.

  The second connection terminals 23a to 23c are connected to the cables 25a to 25c, respectively. Since these cables 25a to 25c are connected to the cables 5a to 5c through the respective contacts of the first connection terminals 3a to 3c and the second connection terminals 23a to 23c, respectively, the voltages corresponding to the cables 5a to 5c And / or current electricity is transmitted respectively. The cables 25 a to 25 c are formed by forming an insulating layer 27 on the outer periphery of the conductor 26.

  Further, as shown in FIG. 5, each of the second connection terminals 23 a to 23 c is formed integrally with the caulking portion 28 and the caulking portion 28 that are caulked and connected to the conductor 26 exposed from the distal ends of the cables 25 a to 25 c. And a U-shaped contact 29.

The inner width L ₁ of the U-shaped contact 29 is formed smaller than the outer diameter of the pressing portions 41 a to 41 c of the connecting member 38. A tapered portion 30 is formed at the distal end portion of the U-shaped contact 29 in order to improve the insertability.

  Each of the second connection terminals 23a to 23c is preferably made of a metal having high conductivity such as silver, copper, or aluminum for the purpose of reducing power transmission loss in the connector 100.

  Referring to FIG. 4 again, the second terminal housing 24 includes a cylindrical body 31 having a bottomed end and a rectangular cross section. Since the first terminal housing 4 is fitted into the second terminal housing 24, the inner peripheral portion on the opening side of the cylindrical body 13 is formed in a tapered shape in consideration of the fitting property with the first terminal housing 4. Has been.

  On the contrary, the second terminal housing 24 may be fitted into the first terminal housing 4. In this case, the inner peripheral portion on the opening side of the cylindrical body 13 constituting the first terminal housing 4 is formed in a tapered shape, and the outer peripheral portion on the opening side of the second terminal housing 24 is formed in a tapered shape so that the housing is waterproof. The structure 14 may be formed on the outer periphery of the second terminal housing 24 on the opening side.

  A plurality of cable insertion holes 32 for inserting the cables 25 a to 25 c connected to the second connection terminals 23 a to 23 c are formed on the bottom side (the left side in the drawing) of the cylindrical body 31. Each cable insertion hole 32 is provided with a cable waterproof structure 33 that seals between the cables 25 a to 25 c and the cylindrical body 31.

  The cable waterproof structure 33 includes a recess 34 formed on the opening surface of the cable insertion hole 32 that contacts the outer periphery of the cables 25 a to 25 c and a packing 35 such as an O-ring provided in the recess 34.

  Further, when the female connector portion 2 and the male connector portion 1 are fitted to the upper portion (the upper side in the drawing) of the cylindrical body 31, the connection member 38 provided in the male connector portion 1 is dodged. A dovetail groove 36 is formed on the opening side of the cylindrical body 31.

  Further, a plurality of tubular support members (slit parts) 37 are provided on the inner wall of the cylindrical body 13. The plurality of support members 37 support the second connection terminals 23a to 23c and the cables 25a to 25c connected to the second connection terminals 23a to 23c, respectively. The second connection terminals 23a to 23c are respectively predetermined. It is for aligning and supporting at the position.

  Each support member 37 causes the second connection terminals 23a to 23c to face each other so as to be paired with the second connection terminals 23a to 23c when the male connector 1 and the female connector 2 are fitted. Positioned and supported so as to be positioned above each of the first connection terminals 3a to 3c to be connected (that is, to be connected).

  Each support member 37 is made of a non-conductive resin or the like in order to insulate the second connection terminals 23a to 23c and prevent a short circuit. Even if the cables 25a to 25c connected to the second connection terminals 23a to 23c are excellent in flexibility, the support member 37 can support the second connection terminals 23a to 23c at predetermined positions. it can. Since cables having excellent flexibility can be used as the cables 25a to 25c, the degree of freedom in wiring when the cables 25a to 25c are laid can be improved.

  The cylindrical body 31 is preferably made of a metal such as aluminum having high electrical conductivity and thermal conductivity for lightness of shielding performance, heat dissipation, and connector 100, but it may be formed of resin or the like. good.

  When the first terminal housing 4 and the second terminal housing 24 are fitted to each other, the connector 100 according to the present embodiment has three first connection terminals 3a to 3c and three second connection terminals 23a to 23a. 23c is a connection structure in which the first connection terminals 3a to 3c and the second connection terminals 23a to 23c are alternately arranged so as to face each other so as to form a pair. The first connection terminals 3a to 3c are pressed by pressing the contact points of the first connection terminals 3a to 3c and the second connection terminals 23a to 23c that face each other while insulating the first connection terminals 3a to 3c arranged in parallel. 3c and the second connection terminals 23a to 23c are fixed at respective contacts and provided with connection means for electrical connection.

  The connection means is fixed by being press-fitted into the circular holes 11 of the first connection terminals 3a to 3c, and has movable members 10a to 10c having internal threads which are screwed portions therein, and the first connection terminals 3a to 3c facing each other. And non-conductive connection member 38 screwed to movable members 10a to 10c of first connection terminals 3a to 3c and non-conductive connection member 38 are fixed so that the second connection terminals 23a to 23c are in contact with each other. And fixing means.

  As shown in FIG. 6 (a), the connecting member 38 is a shaft through which the head 39 and the movable members 10a to 10c of the respective stages that are perpendicular to and aligned with the circular holes 11 of the first connecting terminals 3a to 3c are inserted. The second connection terminals 23a to 23a of each stage so as to contact the first connection terminals 3a to 3c and the second connection terminals 23a to 23c that are provided on the shaft part 40 and face together with the movable members 10a to 10c of each stage. It consists of non-conductive bolts (non-conductive flanged hexagon bolts) having large-diameter pressing portions 41a to 41c that press 23c.

  The corner portions of the pressing portions 41a to 41c are chamfered in a tapered shape, and the second connection terminals 23a to 23c can be easily inserted.

  The pressing portions 41b and 41c are formed with screw portions 43a and 43b which are screwed with the screwing portions of the movable members 10a and 10b of the first connection terminals 3a and 3b. Further, a screw hole 42 (FIG. 2) as a fixing means formed on the lower inner wall inside the cylindrical body 13 is screwed into the distal end portion of the shaft portion 40 with the movable member 10c of the first connection terminal 3c. A screw portion 43c is formed to be screwed with the reference portion.

  As shown in FIG. 6B, the connecting member 38 is made of a metal (for example, SUS, iron, copper alloy, etc.), a main body 44 that forms the central axis of the connecting member 38, and a resin (as an insulator) For example, the insulating portion 45 is made of PPS (polyphenylene sulfide) resin, PPA (polyphthalamide) resin, PA (polyamide) resin, epoxy resin) and covers the outer periphery of the main body portion 44 and forms the pressing portions 41a to 41c. It is good to compose with. As described above, the connecting member 38 has a fold structure of the metal main body portion 44 and the resin insulating portion 45, so that the strength can be increased as compared with the case where the entire connecting member 38 is formed of resin. Moreover, there exists an advantage that the press parts 41a-41c are easy to form by making the insulating part 45 which forms the press parts 41a-41c into resin.

  The connection member 38 is inserted from the outside to the inside of the cylindrical body 13. Therefore, as shown in FIG. 2, a connection member insertion hole 46 for inserting the connection member 38 is formed in the upper part (upper side in the drawing) of the cylindrical body 13. A recess 47 is formed on the opening surface of the connection member insertion hole 46 so as to seal between the connection member 38 and the cylindrical body 13, and a packing 48 such as an O-ring is provided in the recess 47.

  Further, in the present embodiment, as shown in FIG. 7, when the connecting member 38 is attached to the first terminal housing 4, that is, the connecting member 38 is attached to each of the screwing portions 80a to 80c of the movable members 10a to 10c. When screwing, the pressing portions 41a to 41c of each step are sequentially inserted through the screwing portions 80a to 80c of the movable members 10a to 10c of the respective steps to the screwing portions 80a to 80c of the corresponding movable members 10a to 10c. The diameters of the screwed portions 80a to 80c of the movable members 10a to 10c at the respective steps and the pressing portions 41a to 41c at the respective steps were varied stepwise so as to be screwed.

  The reason for this will be described below.

  For example, in order to arrange the first connection terminal 3a at a predetermined position of the connection member 38 (that is, a position where the movable member 10a of the first connection terminal 3a is screwed into the screw portion 43a), the connection member 38 is first It will penetrate the movable member 10a of the connection terminal 3a.

  At this time, if the outer diameters of the portions where the screw portions 43a to 43c are formed are the same, the movable member 10a is screwed one by one until the movable member 10a of the first connection terminal 3a is screwed into the screw portion 43a. It must be passed after being screwed to 43c and 43b, which is troublesome.

  On the other hand, in the tapered configuration like the connecting member 38, the distal end portion of the shaft portion 40 where the screw portions 43c and 43b are formed and the outer diameter of the pressing portion 41c are the pressing portion 41b where the screw portion 43a is formed. Since the diameter of the threaded portion 80a of the movable member 10a is larger than the outer diameter of the screw portions 43c and 43b, the movable member 10a is allowed to pass through without being screwed to the screw portions 43c and 43b. Can do.

  Therefore, the operation | work which inserts the connection member 38 in the movable members 10a-10c of each 1st connection terminal 3a-3c becomes very easy, and it can contribute to shortening of manufacturing time. Similarly, since the connecting member 38 can be easily removed, the maintenance work time can be shortened.

  Therefore, in this embodiment, the diameter of the pressing portions 41a to 41c of each step is changed stepwise to make the connecting member 38 tapered, and the diameters of the screwing portions 80a to 80c of the movable members 10a to 10c are made. Corresponding to the connecting member 38, the difference was made in stages.

  Next, connection between the first connection terminals 3a to 3c and the second connection terminals 23a to 23c using the connector 100 according to the present embodiment will be described.

  As shown in FIG. 8, when the male connector portion 1 and the female connector portion 2 are fitted, the upper portion of the shaft portion 40 of the connection member 38 is displaced by the dovetail groove 36 of the second terminal housing 24. The second connection terminals 23a to 23c are inserted between the first connection terminals 3a to 3c and the pressing portions 41a to 41c.

  In this state, as shown in FIG. 9, when the screw portion 43 c of the connection member 38 is screwed into the screw hole 42 of the cylindrical body 13, the connection member 38 is pushed into the bottom portion of the screw hole 42 while being rotated. The movable members 10a to 10c of the first connection terminals 3a to 3c are screwed into the screw portions 43a to 43c of the connection member 38, and the first connection terminals 3a to 3c are raised.

  In connection with this, each 2nd connection terminal 23a-23c is inserted | pinched between each press part 41a-41c which descends, and each 1st connection terminal 3a-3c which raises, and is pressed. Thereby, also in the environment which generate | occur | produces vibrations, such as a vehicle, in each contact of each 1st connection terminal 3a-3c and each 2nd connection terminal 23a-23c, each 1st connection terminal 3a-3c and each 2nd connection terminal 23a-23c is firmly contacted and fixed. Further, the second terminal housing 24 is pressed against the first terminal housing 4 by the head portion 39 of the connection member 38, and the first terminal housing 4 and the second terminal housing 24 are fastened together.

  As described above, in the present embodiment, the first connection terminals 3a to 3c are pressed by pressing the contact points of the plurality of first connection terminals 3a to 3c and the plurality of second connection terminals 23a to 23c with the connection member 38, respectively. And the second connection terminals 23a to 23c can be fixed and electrically connected at each contact, so that the coupling force of each contact can be stabilized. Thereby, it is possible to realize a particularly effective connector for an automobile in which vibration is likely to occur.

  In the present embodiment, a three-phase alternating current power supply line is assumed. However, according to the technical idea of the present invention, for example, as shown in FIG. The three lines 50a to 50c may be configured as a three-phase AC power line between the motor and the inverter, and the lower two lines 51a and 51b may be configured as a DC two-phase power line for an air conditioner. . By configuring in this way, it is possible to connect power lines for multiple applications at once with a single connector, so there is no need to prepare different connectors for each application, saving space and reducing costs. Can contribute.

  In the present embodiment, the first connection terminals 3a to 3c and the second connection terminals 23a to 23c are in contact with each other on the surface, but the second connection terminals 23a to 23c that are the contact-side surfaces It is good also as a structure which forms a convex part in the surface at the side of the 1st connection terminal 3a-3c which contacts, and the U-shaped contact 29 of 2nd connection terminal 23a-23c fits in this convex part. With this configuration, the coupling force between the first connection terminals 3a to 3c and the second connection terminals 23a to 23c can be further stabilized. That is, it is particularly effective against vibration in the direction perpendicular to the connection member 38.

  Further, the terminal surfaces of the first connection terminals 3a to 3c and the second connection terminals 23a to 23c are roughened by knurling, etc., to increase the frictional force and make the terminals difficult to move, thereby strengthening the fixing at each contact. Anyway.

  Further, in the present embodiment, the lengths of the branched tips of the U-shaped contacts 29 of the second connection terminals 23a to 23c are the same, but as shown in FIG. One of these lengths may be formed long to form a J-shaped contact 54. By adopting a shape like the J-shaped contact 54, as shown in FIG. 11B, it can be inserted into the shaft portion 40 of the connecting member 38 even from an oblique direction with respect to the longitudinal direction of the cable. Become.

  In the structure of the present invention, the first connection terminals 3a to 3c and the second connection terminals 23a to 23c are connected to each other with the shaft portion 40 of the connection member 38 as an axis, as shown in FIG. The first connection terminals 3a to 3c of the male connector section 1 intersect and contact each of the second connection terminals 23a to 23c of the female connector section 2 fixed on the device side. By configuring the first terminal housing 4 and the second terminal housing 24, the male connector 1 and the female connector 2 can be L-shaped. Moreover, as shown in FIG.12 (b), the 1st terminal housing 4, the 1st connection terminals 3a-3c, the 2nd terminal housing 24, and the 2nd connection terminals 23a-23c are formed diagonally, and a male side connector is formed. The insertion / extraction direction of the female connector part 2 with respect to the part 1 can be diversified.

  That is, the direction in which the cable is drawn from the connector 100 can be matched with the shape of the installation location, which can contribute to space saving. In addition, in FIG. 12, the 1st terminal housing 4 which is the male side connector part 1 side was made into the female side housing, and the 2nd terminal housing 24 which is the female side connector part 2 side was made into the male side housing.

  In the present embodiment, the connector 100 is used to connect the cables to each other. However, the present invention is not limited to such a structure. For example, as shown in FIG. 13, rigid bus bars 55 are used as the first connection terminals 3 a to 3 c of the male connector portion 1, and the bus bars 55 are aligned by the alignment members 56 made of resin to form a hollow cylindrical first. The female connector 58 is housed in a single terminal housing 57, the bus bar 55 of the male connector 58 is connected to a connection terminal such as a device in advance, and the cables 25a to 25c are connected to the female side. It is good also as a structure which fits the connector part 2. FIG. As a method of aligning and holding the bus bar 55 on the alignment member 56, for example, a method of inserting the bus bar 55 when the alignment member 56 is molded and then hardening and aligning the resin, or holding the bus bar 55 on the alignment member 56 formed in advance. There is a method of press-fitting and maintaining alignment.

  In the present embodiment, the cables 5a to 5c and the cables 25a to 25c are cables having excellent flexibility, but may be rigid cables. 37 can be omitted.

  By the way, in the connection structure of this invention, in order to connect the power supply line of a some use collectively with the one connector 100, for example, it may want to press each contact with a respectively different fastening torque for every power supply line.

  In this case, each of the movable members 10a to 10c of the first connection terminals 3a to 3c may have a ratchet structure so that it can rotate when a predetermined tightening torque is applied so that the respective contacts can be pressed with different tightening torques.

  As shown in FIG. 14, the movable member 59 having a ratchet structure includes a nut housing 60, a nut main body 61, and a spring 64 provided between the nut housing 60 and the nut main body 61. The storage unit is configured to store a nut body 61 and a press-fit unit 62 formed in the upper part of the storage unit and press-fitted into each of the circular holes 11 of the first connection terminals 3a to 3c.

  As shown in FIG. 15, a plurality of protrusions 63 are formed on the outer periphery of the nut body 61 at a predetermined interval. The height of the protrusion 63 is designed to be such that a spring part 66 of the spring 64 described later does not deform more than necessary (plastic deformation). In addition, a female screw that is a screwed portion that is screwed into any one of the screw portions 43 a to 43 c of the connection member 38 is cut on the inner peripheral surface of the nut main body portion 61.

  As shown in FIG. 16, the spring 64 includes a hollow cylindrical spring main body 65 and spring portions 66 formed radially on the outer periphery of the spring main body 65 at predetermined intervals.

  On the side surface of the spring main body 65, a plurality of notches 67 that fit into the protrusions 63 of the nut main body 61 are formed. The respective notches 67 are fitted into the corresponding protrusions 63 of the nut main body 61 so that the spring 64 is fixed to the outer periphery of the nut main body 61. The tip of the spring portion 66 is bent toward the spring body 65 side.

  Referring again to FIG. 14, the inner peripheral surface of the nut housing 60 has a reduced diameter portion 69 and an edge portion 70 so that the rotation of the rack 68 in which the spring 64 is fitted to the nut body portion 61 is restricted in one direction. It is made into the uneven | corrugated shape formed alternately.

  A method for manufacturing the movable member 59 will be described.

  First, as shown in FIG. 17, a nut housing 60 having both ends opened is prepared. On the other hand, as shown in FIG. 18, the spring 64 and the nut main body 61 are fitted to form a rack 68. Thereafter, as shown in FIG. 19, the rack 68 is accommodated in the accommodating portion of the nut housing 60, and the lower portion 71 of the nut housing 60 is pressed and bent inward to cover the accommodating portion of the nut housing 60. . The movable member 59 is obtained by the above process.

  By configuring in this manner, that is, by configuring the movable members 10a to 10c with the movable member 59 having a ratchet structure, the rack 68 rotates in the right direction when the connecting member 38 (right screw in FIG. 6) is tightened. However, the rotation of the reduced diameter portion 69 is restricted by the spring force of the spring portion 66 (the force by which the spring portion 66 presses the inner surface of the reduced diameter portion 69 of the nut housing 60), and each connection member 38 is tightened. The first connection terminals 3a to 3c are raised, and the second connection terminals 23a to 23c are pressed by the first connection terminals 3a to 3c and the pressing portions 41a to 41c.

  When the connection member 38 is tightened in this state, the tightening torque exceeds the spring force of the spring portion 66, the spring portion 66 is deformed, and the rack 68 is idled in the right direction. Thereby, each contact is not pressed with a tightening torque equal to or higher than a specified torque, and is pressed with a suitable tightening torque.

  On the contrary, when loosening the tightening of the connecting member 38, the tip of the spring portion 66 is caught by the edge portion 70, and the rotational torque of the connecting member 38 is transmitted to the movable member 59 as it is. Can be loosened.

  Thus, by making each movable member 10a-10c into a ratchet structure, each contact can be pressed with a different tightening torque.

  In the case of the embodiment relating to the ratchet structure, for example, the example in which the power lines for a plurality of uses are connected together with one connector 100 has been shown, but it is also possible to use a power line for one use. In this case, the pressing force for each contact can be made more uniform, and the coupling force of each contact can be stabilized.

  As described above, the connector has been described as an example of the connection structure of the present invention. However, the connection structure of the present invention can be applied to other than the connector.

  For example, as shown in FIG. 20A, a female that integrally forms a second terminal housing 73 that accommodates a plurality of second connection terminals 72 connected to a circuit of an electronic device in a casing 74 of the electronic device. A male connector portion 78 including a first terminal housing 77 provided with a plurality of first connection terminals 76 is fitted to the side connector portion 75 to connect each first connection terminal 76 and each second connection terminal 72. Such a connection structure 200 can also be applied.

  In this case, as shown in FIG. 20B, the male connector portion 78 can be fitted to the female connector portion 75 at various angles by variously changing the shape of the first terminal housing 77. Thus, the direction in which the cable 79 is pulled out can be diversified.

  The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the present embodiment, the screw hole 42 is formed on the first terminal housing side, but the first terminal housing side is not a screw hole but only a through hole, and the screw hole is on the second terminal housing side. It may be formed. Moreover, the screw hole may be formed over both the 1st terminal housing side and the 2nd terminal housing side.

  Furthermore, in the present embodiment, the screw hole 42 is formed at a position where the screw hole 43c is screwed with the screw portion 43c on the distal end side of the connection member 38, but the screw portion is formed on the head side of the connection member 38. Then, a screw hole may be formed so as to be screwed with a screw portion formed on the head side.

DESCRIPTION OF SYMBOLS 1 Male side connector part 2 Female side connector part 3a-3c 1st connection terminal 4 1st terminal housing 10a-10c Movable member 23a-23c 2nd connection terminal 24 2nd terminal housing 38 Connection member 41a-41c Press part 80a-80c Threaded part

Claims (10)

A first terminal housing in which a plurality of first connection terminals are arranged and stored;
A second terminal housing in which a plurality of second connection terminals are arranged and stored;
When the first terminal housing and the second terminal housing are fitted, each of the plurality of first connection terminals and each of the plurality of second connection terminals face each other and form a pair. In the connection structure in which the connection terminals and the second connection terminals are alternately arranged in a stacked state,
Insulating the first connection terminals and the second connection terminals while pressing the plurality of first connection terminals and the plurality of contacts according to the plurality of second connection terminals, respectively, thereby the first connection terminals. And connecting means for fixing and electrically connecting the second connection terminal at each contact,
A plurality of movable members provided in alignment with each of the first connection terminals of each stage and having a threaded portion, for contacting the second connection terminal facing the first connection terminal;
Non-conductive having a shaft portion that is screwed into each of the screwed portions of the movable members of each of the arranged stages and formed with pressing portions for pressing the contact points above the plurality of first connection terminals. The connection member
When the connecting member is screwed into each of the screwing portions of the movable member, the pressing portions at each step are sequentially inserted through the screwing portions at each step and screwed into the corresponding screwing portions. As described above, the connection structure is characterized in that the diameters of the screwed portions of the movable members at the respective steps and the pressing portions at the respective steps are made different in stages. The connecting member is
A main body made of metal and forming a central axis;
The connection structure according to claim 1, wherein the connection structure is made of an insulating material and includes an insulating portion that covers the outer periphery of the main body and forms the pressing portion.   The connection structure according to claim 1, wherein the movable member has a ratchet structure that idles when a predetermined tightening torque is applied.   4. Each of the second connection terminals is supported by being aligned at a predetermined position by a plurality of support members provided in the second terminal housing. 5. Connection structure.   The first terminal housing and / or the second terminal housing has a space between the first terminal housing and the second terminal housing when the first terminal housing and the second terminal housing are fitted together. The connection structure according to claim 1, further comprising a waterproof housing structure for sealing. The first terminal housing and / or the second terminal housing have a plurality of cable insertion holes for inserting cables connected to the plurality of first connection terminals and / or the plurality of second connection terminals, respectively. Formed,
Each of the cable insertion holes is provided with a cable waterproof structure that seals between the cable and the first terminal housing and / or between the cable and the second terminal housing. The connection structure according to claim 1.   The connection structure according to claim 1, wherein electricity of different voltage and current is transmitted at each contact point between the first connection terminal and the second connection terminal.   8. The first terminal housing and the second terminal housing are fitted so that the first connection terminal and the second connection terminal intersect and contact in a plan view. The connection structure according to any one of the above. The connection means further includes a fixing means for fixing the connection member to the first terminal housing and / or the second terminal housing,
The fixing means presses and fixes each contact when the first terminal housing and the second terminal housing are fitted together, and fastens the first terminal housing and the second terminal housing together. The connection structure according to claim 1, wherein the connection structure is fixed. The fixing means includes
A threaded portion formed at the tip of the connecting member;
The connection structure according to claim 9, comprising a screw hole formed in the first terminal housing and / or the second terminal housing and screwed into the screw portion.

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