JP3718585B2 - connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector for connecting, for example, a power supply cable or a control cable of a vehicle motor.
[0002]
[Prior art]
Conventionally, as a connector for a power cable for supplying electric power to a motor, for example, as disclosed in Japanese Patent Application Laid-Open No. 60-146481, a power supply side insertion guide and an electric motor side insertion guide are arranged in a horizontal direction on a plate. A plurality of detachable plates that are detachable in the vertical direction with the power supply side connector attached to the power supply side insertion guide, and in the vertical direction with the motor side connector attached to the motor side insertion guide A plurality of detachable plates are attached to the power supply side, and the insertion guide is moved in the horizontal direction by an operation mechanism connected to one of the power supply side insertion guide and the motor side insertion guide, and the motor is connected to the power supply side connector. There is one that can connect and disconnect the motor power cable by connecting and disconnecting the side connector.
[0003]
[Problems to be solved by the invention]
However, when the connector having such a configuration is used to connect the power supply cable of the vehicle motor, the connector is installed in a narrow space at the bottom of the vehicle body, and the insertion guide is moved horizontally by the operation mechanism as described above. Since the cable must be connected and disconnected, there is a problem that a moving stroke of the insertion guide is required, and that the operation takes a lot of labor and time.
[0004]
In addition, since the vehicle motor has a large current and voltage, the connector itself becomes large according to its capacity, and a longer stroke is required.
The present invention has been made to solve the above-described problems, and provides a connector that can be easily and easily attached and detached and can obtain a constant contact pressure by making the whole compact. With the goal.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention constitutes a connector by the following means.
The invention corresponding to claim 1 is a first connection conductor having a semicircular cross section having a first flat portion formed by being cut out in an axial direction, and an end face side is closed by the first flat portion. was rectangular groove is formed, cross-section having a second flat part formed by the notch in the axial direction and a second connecting conductor semicircular, said first to said second planar portion convex portion fitted to the rectangular groove formed in the connection conductor is formed in the axial direction, mounted on both sides of the convex portion of the second connecting conductor, band by concatenating a plurality of electrode pieces same as a contact with the configured spring characteristic, the first of said prismatic groove on fitting the convex portion of the second connection conductor fitted allowed by these connecting conductors of the connecting conductor is cylindrical It is configured to be located on the axis.
[0006]
The invention corresponding to claim 2 is the connector of the invention corresponding to claim 1, wherein the contacts are inserted into dovetail grooves provided on both side surfaces of the convex portion of the second connecting conductor and fixed by caulking both ends thereof. It is what is done.
[0007]
Therefore, in the connector of the invention corresponding to claim 1 and claim 2, the spring characteristic is formed in a strip shape by connecting a plurality of electrode pieces to both side surfaces of the convex portion formed in the second connection conductor. Is attached to the groove formed in the first connection conductor, and the second connection conductor and the first connection conductor are connected to each other due to the spring characteristics of the contact. While making contact with a constant large contact pressure, generation of an oxide film formed on the contact surface by a wiping action in the contact pressure direction can be prevented, and a large current can flow. Further, as in the invention corresponding to claim 2, by inserting the contacts into dovetail grooves provided on both side surfaces of the convex portion of the second connecting conductor and caulking the both ends, the axial direction is about several millimeters. Therefore, the contact is not thermally deformed by energization for a long time. Furthermore, since the operation force required for attaching and detaching both the connecting conductors is small, and the cable core wires are combined so as to be on the same center line, the whole can be made compact.
[0008]
The invention corresponding to claim 3 is a shape in which the block body is separated by a surface formed between one side of the upper surface and a side facing the lower side of the bottom surface of the block body, and the inclined surface direction from the end surface A first case and a second case having through-holes extending through the first and second cases, and a groove formed in a flat part formed by inserting an insulator into the through-hole of the first case and cutting the conductor in the axial direction. The first connection conductor provided in the axial direction and the first connection conductor in a flat portion formed by inserting the conductor into the through hole of the second case via an insulator and notching the conductor in the axial direction A second connection in which a convex portion that fits into the groove is provided in the axial direction, and a plurality of electrode pieces are connected to both side surfaces of the convex portion, and contact members each having a spring characteristic configured in a strip shape are attached to each of the convex portions. A conductor, and overlapping the separation surface of the first case and the second case When the projections of the second connection conductors are fitted into the grooves of the first connection conductors, the cable lead wires of both connection conductors are combined on the same axis. It is.
[0009]
According to a fourth aspect of the present invention, in the connector according to the third aspect of the present invention, a rod insertion hole is provided at an appropriate position of the second case between the first and second connection conductors, and the first The case is provided with a screw hole communicating with the rod insertion hole, and a screw-like coupling member having a screw groove formed on the outer peripheral surface and a screw groove having a wide pitch interval formed on the inner peripheral surface is screwed into the screw hole. A rod having a protrusion at an appropriate position on the peripheral surface is inserted into a coupling member provided in the first case through a rod insertion hole provided in the second case, and the protrusion is inserted into the coupling member. The second case and the first case can be joined or removed by being inserted into or removed from the screw groove.
[0010]
Therefore, in the connector of the invention corresponding to claim 3 and claim 4, in addition to obtaining the same operational effect as the invention corresponding to claim 1 and claim 2, the first case and The attachment and detachment of the second case can be performed easily and easily with the minimum necessary operation. In particular, when used as a power connector for a vehicle motor, attachment / detachment in a narrow space can be performed in a short time without requiring labor.
[0011]
The invention corresponding to claim 5 is the connector of the invention corresponding to claim 3, wherein when the separation surfaces of the first case and the second case are overlapped , packing is interposed on one of the separation surfaces. is there.
[0012]
The invention corresponding to claim 6 is the connector of the invention corresponding to claim 3, wherein the first case and the first connection conductor on the second case side and the cable outlet led from the second connection conductor are provided. An insulating coating is provided so as to cover the part and is fixed by a fixing tool.
[0013]
Therefore, in the connector of the invention corresponding to claim 5 and claim 6, the energizing part has a completely waterproof structure, and when used as a vehicle connector, there is no intrusion of rainwater etc., and the insulation performance is improved. It will be excellent.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 is a plan view showing a part of an embodiment of a connector according to the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a view of FIG. FIG. 4 is a view of FIG. 1 viewed from the direction of arrow C. FIG.
[0015]
1 to 4, reference numerals 1 and 2 denote a lower case and an upper case made of, for example, aluminum. The lower case 1 and the upper case 2 are each composed of a block body having one upper surface and an obliquely lower bottom surface with respect to this side. It is the thing of the shape isolate | separated by the inclined surface formed between the edge | sides which oppose, and it has a mounting flange in the both sides.
[0016]
The lower case 1 has a jaw receiving portion 1a at the upper portion of the inclined surface, a jaw portion 1b protruding upward at the lower portion of the inclined surface, and a plurality of (four in this example) that come out from the end surface in the inclined surface direction. The through holes 1c are provided along the longitudinal direction of the end face with an appropriate interval. Similarly, the upper case 2 has a chin portion 2a fitted to the chin receiving portion 1a of the lower case 1 at the upper portion of the inclined surface, and a chin receiving portion fitted to the chin portion 1b of the lower case 1 at the lower portion of the inclined surface. A plurality of (four in this example) through-holes 2c having 2b and extending in the direction of the inclined surface from the end surface are provided corresponding to the through-holes 1c of the lower case 1.
[0017]
Further, a connection conductor 3 is inserted into each through hole 1c of the lower case 1 via an insulator 4, and similarly, a connection conductor 5 fitted to the connection conductor 3 is also inserted into each through hole 2c of the upper case 2. It is inserted through the insulator 4.
[0018]
These connecting conductors 3 and 5 are configured as shown in FIGS.
That is, as shown in FIG. 6, the connecting conductor 3 is formed in a semi-cylindrical shape by notching a cylindrical conductor in the axial direction, and an axial square groove 3a whose end face side is closed is provided in the flat portion, and the rear portion thereof. A cable connection body 6 is integrally provided.
[0019]
Further, as shown in FIG. 5, the connecting conductor 5 is formed in a semi-cylindrical shape by notching a cylindrical conductor in the axial direction, and a convex portion 5a fitted in the rectangular groove 3a of the connecting conductor 3 is formed in the flat portion in the axial direction. The cable connecting body 7 is integrally provided at the rear portion thereof. Further, dovetail grooves 5b are provided in the axial direction on both side surfaces of the convex portion 5a of the connecting conductor 5, and a plurality of bridge-shaped electrode pieces are connected to the dovetail groove 5b to form a contact 8 configured in a band shape. It is inserted and fixed by caulking both ends in its longitudinal direction.
[0020]
As shown in FIG. 7, this contactor 8 is constructed by connecting and integrating a bridge-shaped electrode piece 8a obtained by specially quenching a beryllium copper (BeCu) alloy with a copper belt-like supporter. Current can flow. In this case, the current carrying capacity is proportional to the number of electrode pieces 8a.
[0021]
In the contact 8 in which the bridge-shaped electrode pieces 8a having such a structure are connected, the spring characteristics are excellent, and since one electrode piece 8a forms an independent contact, for example, when used for a plug / socket, FIG. As shown to (a), the contact pressure in the state which pressed both contact surfaces with fixed force is hold | maintained. Therefore, the voltage drop decreases as the contact pressure increases.
[0022]
Further, with the plug / socket connected, the gap between the connection surfaces of the plug / socket increases or decreases as shown in FIG. 8B due to a heat cycle such as energization on / off. In such a state, the bridge-shaped electrode piece (contact part) 8a of the contact 8 moves like the dotted line or the alternate long and short dash line in the figure, so that the formation of the insulating oxide film is prevented by the wiping action on the contact surface. In addition, the insulating film is destroyed.
[0023]
With such a structure, one of the cable connection bodies 6 and 7 is integrally provided at the rear of the connection conductors 3 and 5 inserted into the through holes 1c and 2c of the lower case 1 and the upper case 2. The core wire of the cable 9 connected to the power source side and the other side to the motor side is inserted and fixed by caulking the outer peripheral surface, and the O-ring 10 is attached to the outer peripheral surface and the outer peripheral surface near the outlet portion of the cable 9. Fixing tools 11a and 11b are provided, and are further fixed by cable connectors 13a and 13b made of an insulating material through sealing rings 12a and 12b made of rubber so as to cover the fixing tools 11a and 11b. The
[0024]
On the other hand, when the lower case 1 and the upper case 2 are overlapped on the separation surface, an O-ring 14 is provided around the inclined surface of the lower case 1.
Further, as shown in FIGS. 3 and 4, the upper case 2 is provided with rod insertion holes 2d extending in the direction of the separation surface from the lower case 1 at two appropriate locations corresponding to the space between the through holes 2c. The case 1 is also provided with a screw hole 1d communicating with the rod insertion hole 2d.
[0025]
In this case, an annular step having a large diameter is formed at the opening of the rod insertion hole 2d. A pipe-like coupling member 15 having a screw groove 15a formed on the outer peripheral surface and a screw groove 15b having a wide pitch interval formed on the inner peripheral surface is screwed into the screw hole 1d.
[0026]
In the rod insertion hole 2d provided in the upper case 2 and the coupling member 15 provided in the lower case 1, a rod 16 having a protrusion 16a at an appropriate position on the peripheral surface is inserted from the upper surface of the upper case 2, As shown in FIG. 4, the operating handle 17 is screwed into the threaded portion formed at the tip of the rod 16 and then rotated clockwise or counterclockwise so that the protruding portion 16 a on the rod 16 is connected to the screw of the coupling member 15. The upper case 2 and the lower case 1 can be connected to or detached from each other by being inserted into or removed from the groove 15b. In this case, when the rod 16 is inserted into the rod insertion hole 2 d provided in the upper case 2, there is always a gap between the annular step provided at the top of the rod insertion hole 2 d and the metal receiver 18 provided on the rod 16. A spring 19 that applies a biasing force in the pulling direction to the rod 16 is inserted.
[0027]
Reference numeral 20 denotes a waterproof cap that is attached to the upper case 2 so as to cover the tip of the rod 16 after the upper case 2 and the lower case 1 are joined by the rod 16.
[0028]
In the connector configured in this way, as shown in FIGS. 5 and 6, the lower case 1 and the upper case 2 are inserted into the through holes 1c and 2c of the upper case 2 respectively. 1 is attached to the vehicle body side, and an O-ring 14 is provided around the separation surface, and then the upper case 2 connected to the motor side is overlapped so that the separation surfaces coincide. At this time, the convex portion 5a of the connection conductor 5 is fitted into the rectangular groove 3a of the connection conductor 3, and the connection conductor 5 and the connection conductor 3 are constant and large due to the spring characteristics of the contact 8 formed of the bridge-shaped electrode piece 8a. Contact is made with contact pressure, and the core wires of the cables 9 of the connecting conductors 3 and 5 are on the same center line.
[0029]
After the lower case 1 and the upper case 2 are overlapped on the separation surface in this way, the rod 16 is inserted into the rod insertion hole 2d of the upper case 2, and the operation handle 17 is screwed into the screw portion at the tip. By connecting and rotating clockwise against the elastic force of the spring 19, the protrusion 16a of the rod 16 is fitted into the screw groove 15b of the coupling member 15, and the protrusion 16a moves along the screw groove 15b. Then, the lower case 1 and the upper case 2 are integrally coupled with each other at a position where the lock groove portion that is bent in the opposite direction at the terminal end is reached.
[0030]
In order to remove the upper case 2 contrary to the above, the rod 16 is rotated to the left by an appropriate angle while the handle 17 is pushed down, and the projection 16a of the rod 16 is removed from the lock groove. 15, the upper case 2 can be separated from the lower case 1.
[0031]
As described above, according to the connector having the above-described configuration, the lower case 1 having a shape in which the block body is separated by the inclined surface formed between one side having the upper surface and the side facing the lower side obliquely below the bottom surface. The lower case 1 and the upper case 2 are provided with through-holes 1c and 2c extending from the end surfaces in the inclined surface direction, and the lower case 1 is formed in a semi-cylindrical shape in the through-hole 1c. And a connecting conductor 3 having an axial square groove 3a with its end face closed on the flat surface is inserted, and is formed in a semi-cylindrical shape in the through hole 2c of the upper case 2 and connected to the flat portion. A connection in which convex portions 5a that fit into the rectangular grooves 3a of the conductor 3 are provided in the axial direction, and a plurality of bridge-shaped electrode pieces 8a are connected to both side surfaces of the contact portions 8 that are formed in a band shape. Insert conductor 5 and lower cable 1 and the upper case 2 are separated from each other, and the protrusion 5a of the connection conductor 5 is overlapped with the rectangular groove 3a of the connection conductor 3, and then the lower case 1 is passed through the rod insertion hole 2d of the upper case 2. The lower case 1 and the upper case 2 are fixed by inserting the rod 16 into the connecting member 15 and fitting the protruding portion 16a into the screw groove 15b.
[0032]
Therefore, when the convex portion 5a of the connection conductor 5 is fitted into the rectangular groove 3a of the connection conductor 3, the connection conductor 5 and the connection conductor 3 are fixed due to the spring characteristics of the contact 8 formed of the bridge-shaped electrode piece 8a. While contacting with a large contact pressure, the core wires of the cables 9 of the connection conductors 3 and 5 are on the same center line, so that the whole is compact and the connection can be made easily and easily. Moreover, since the connecting conductor 3 is provided with the rectangular groove 3a whose end face side is closed, the present invention can be applied even when the temperature rise of the connector is large.
[0033]
Further, in the contact 8 in which the bridge-shaped electrode pieces 8a are connected, the spring characteristics are excellent, and one electrode piece 8a forms an independent contact, and the contact surfaces of the connection conductors 3 and 5 are pressed with a constant force. Since the contact pressure is maintained, the voltage drop is reduced by increasing the contact pressure. Even if the gap between the connecting surfaces becomes larger or smaller, the contact pressure is maintained by the elastic force of the bridge-shaped electrode piece 8a of the contactor 8, and an insulating oxide film is formed by the wiping action. Can be prevented.
[0034]
Further, after the lower case 1 and the upper case 2 are overlapped on the separation surface, the rod 16 is inserted into the rod insertion hole 2d of the upper case 2 and the operation handle 17 is rotated to the right against the elastic force of the spring 19. The protrusion 16a of the rod 16 is fitted into the screw groove 15b of the coupling member 15 and moved to the lock groove, so that the lower case 1 and the upper case 2 are integrally fixed, and the handle 17 is pushed down. However, since the rod 16 can be pulled out from the coupling member 15 by the elastic force of the spring 19 and the upper case 2 can be separated from the lower case 1 simply by rotating leftward at an appropriate angle and removing the protrusion 16a on the rod 16 from the lock groove. When used as a power connector for a vehicle motor, attachment / detachment in a narrow space can be performed in a short time without requiring labor.
[0035]
On the other hand, when the lower case 1 and the upper case 2 are overlapped with each other on the separation surface, an O-ring 14 is provided around the inclined surface of the lower case 1 and is inserted into the through holes 1c and 2c of the upper case 2. Fixing devices 11a and 11b are provided by inserting O-rings 10 on the outer peripheral surface of the cable 9 fixed to the cable connecting bodies 6 and 7 at the rear of the connection conductors 3 and 5 and the outer peripheral surface in the vicinity of the outlet portion, Further, since the sealing members 12a and 12b made of rubber or the like are inserted so as to cover the fixing members 11a and 11b and fixed by the cable connectors 13a and 13b made of an insulating material, the energizing portion has a completely waterproof structure. When used as a connector for a vehicle motor, rainwater or the like does not enter, and the insulation performance is excellent.
[0036]
In the above embodiment, the case where the connection conductors 3 and 5 shown in FIGS. 5 and 6 are used as a vehicle connector has been described. However, as described above, a plurality of bridges are provided on both side surfaces of the convex portion 5a of the connection conductor 5. Since the electrode 8 of the shape is connected and the contact 8 configured in a band shape is attached and a large current can be passed with the small contact, it can be applied to a switch such as a breaker.
[0037]
Further, in the connection conductor 3 shown in FIGS. 5 and 6, the end face side of the rectangular groove 3 a is closed, but the rectangular groove 3 a opened by notching the closed portion may be used.
In addition, it goes without saying that the present invention can be variously modified and implemented without changing the gist thereof.
[0038]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a connector that is compact as a whole, can be easily and easily attached and detached, and can obtain a constant contact pressure.
[Brief description of the drawings]
FIG. 1 is a plan view showing a part of an embodiment of a connector according to the present invention in a cutaway manner.
2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a diagram showing a part of FIG.
4 is a view of FIG. 1 as viewed from the direction of arrow C. FIG.
FIG. 5 is a perspective view showing a connection conductor incorporated in the lower case and the upper case in the embodiment.
6 is an enlarged perspective view showing a connection conductor of the lower case of FIG. 5. FIG.
7 is a configuration explanatory diagram of a contact attached to a connection conductor of the upper case in FIG. 5;
FIG. 8 is a characteristic diagram with respect to contact pressure of a bridge-type electrode piece constituting the contact.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lower case 1a ...... Jaw receiving part 1b ... Jaw part 1c ... Through-hole 1d ... Screw hole 2 ... Upper case 2a ... Jaw part 2b ... Jaw receiving part 2c ... Through-hole 2d ... ... Rod insertion holes 3 and 5 ... Connection conductor 3a ... Square groove 5a ... Convex part 5b ... Dovetail groove 4 ... Insulator 6, 7 ... Connection body 8 ... Contact 8a ... Bridge-type electrode piece 9 ... Cable 10 ... O-rings 11a, 11b ... Fixtures 12a, 12b ... Sealing rings 13a, 13b ... Cable connector 14 ... O-ring 15 ... Coupling member 15a ... Screw groove 15b ... Screw Groove 16 ... Rod 17 ... Control handle 18 ... Receipt 19 ... Spring 20 ... Waterproof cap

Claims (6)

A first connection conductor having a semicircular cross section having a first flat portion formed by cutting in the axial direction, and a rectangular groove whose end face side is closed is formed in the first flat portion ,
A second connection conductor having a second flat portion formed by cutting out in the axial direction is a semicircular second connection conductor, and a rectangular groove formed in the first connection conductor in the second flat portion. The convex part to be fitted is formed in the axial direction,
The second is attached on both sides of the convex portion of the connection conductor, and a contact having a spring characteristic that is configured in a band shape by connecting a plurality of electrode pieces,
Wherein the first of said prismatic groove on fitting the convex portion of the second connection conductor fitted allowed by these connecting conductors of the connecting conductor is configured to be positioned on the same axis as becomes cylindrical connector. 2. The connector according to claim 1, wherein the contacts are inserted into dovetail grooves provided on both side surfaces of the convex portion of the second connecting conductor and fixed by caulking both ends thereof. The block body has a shape separated by a surface formed between one side of the upper surface and a side facing the lower side of the bottom surface of the block body, and has a through hole that extends from the end surface in the direction of the inclined surface. A first case in which a groove is provided in the axial direction in a flat portion formed by inserting an insulator into the through hole of the case and the second case, and the conductor is cut out in the axial direction; A connecting conductor and a convex portion that is inserted into the through hole of the second case via an insulator and is formed by cutting the conductor in the axial direction to fit into the groove of the first connecting conductor. A second connecting conductor provided in the axial direction and having a plurality of electrode pieces connected to both side surfaces of the convex portion and attached with contacts each having a spring characteristic formed in a strip shape;
When the separation surfaces of the first case and the second case are overlapped, the convex portion of the second connection conductor is fitted into the groove portion of the first connection conductor, and the cable lead wires of both connection conductors The connector is configured to be combined so as to be positioned on the same axis. The connector according to claim 3, wherein a rod insertion hole is provided at an appropriate position of the second case corresponding to between the first and second connecting conductors, and a screw hole communicating with the rod insertion hole in the first case. And a pipe-like coupling member having a screw groove formed on the outer peripheral surface and a screw groove having a wide pitch interval formed on the inner peripheral surface, and a protrusion having protrusions at appropriate positions on the peripheral surface. Is inserted into a coupling member provided in the first case through a rod insertion hole provided in the second case, and the protrusion is inserted into or removed from the screw groove of the coupling member. A connector characterized in that the second case and the first case can be connected or detached. 4. The connector according to claim 3, wherein when the separation surfaces of the first case and the second case are overlapped , a packing is interposed on one of the separation surfaces . 4. The connector according to claim 3, wherein an insulating covering is provided and fixed so as to cover the first case and the first connection conductor on the side of the second case and the cable outlet that is drawn from the second connection conductor. A connector characterized by being fixed by a tool.

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