JP2554170B2 - Connector - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector suitable for supplying a large amount of power, for connecting a power source and a device, for example.

Prior art JP-B 16-9382 and JP-B 28-12469 disclose a cylindrical socket body in which arc-shaped conductive strips are closely arranged in a circle to define a plug insertion hole. A plurality of annular grooves are formed on the outer circumferential surface of the cylindrical socket body along the circumferential surface thereof, and a spring band is wound around the annular grooves to condense the conductive strips of the cylindrical socket body so that they can expand and contract. Both the outer surface and the inner surface of the conductive strip are arc-shaped, and the assembly is formed into a plug insertion hole having a regular circular shape in a plan view, and a cylindrical plug is pushed into the plug insertion hole so that circles come into contact with circles.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above conventional example, when a circular plug insertion hole is formed by converging an arc-shaped conductive strip into a cylindrical shape, a cylindrical plug insertion part and each arc-shaped conductive strip are formed. Since they are in surface contact with each other on their circumferential surfaces, the contact pressure cannot be sufficiently secured, and on the contrary, they have the drawback of lowering reliability.

Further, in order to obtain proper surface contact by the conventional example, the circumferential surface of the plug insertion hole must be formed in a perfect circle that perfectly matches the circumferential surface of the plug insertion portion, but in reality, many arcs are formed. It is technically very difficult to form shaped conductive strips into a regular cylinder, and in order to form a regular cylinder by gathering such arc-shaped conductive strips, extremely advanced processing technology is required, Frequently, there is a problem in that individual circular curvatures are not formed and a regular circular plug insertion hole is not formed, and proper circumferential surface contact with the plug cannot be obtained, making it difficult to stably supply a large amount of power.

Further, in the case of supplying a large amount of electric power, it may cause seizure of the pole portion (fusion of the plug or thermal deformation of the contact surface).

Further, in the conventional example, since each square bar material is cut or forged into a circular arc shape to form a cylindrical body by converging it in a circular shape, there is a problem that it takes a lot of time and effort and is very expensive. In addition, there is a problem that the curvature of each arc-shaped conductive strip tends to vary, and it is difficult to make close contact with the cylindrical socket insertion portion on the entire circumferential surface, resulting in uneven contact.

Means for Solving the Problems The present invention provides a connector capable of effectively enjoying the advantages of the above-mentioned conventional examples while effectively solving the problems of the above-mentioned conventional examples. An arc formed by equally dividing a regular cylindrical body in the axial direction in the case of constructing a connector in which the above arc-shaped conductive strips are arranged in a cylindrical shape and are bound by a spring band to press-fit a fixed plug and a movable plug. A cylindrical socket body is formed by arranging a group of shaped conductive strips in a circular shape, and the inner peripheral surface of each arc-shaped conductive strip is finished to be a flat inner surface to form a plug insertion hole into a polyhedral shape. At the same time, the fixed plug and the movable plug have a structure in which the plug insertion portion is formed into a cylindrical shape, and each busbar thereof comes into pressure contact with each flat inner surface of the arc-shaped conductive strip group on a line parallel to the axis. It was done.

Effect According to the present invention, an arc-shaped conductive strip group formed by dividing a regular cylindrical body into an arbitrary number in the axial direction is arranged to obtain a desired division movable cylindrical socket, and selection of the division number. With this, the number of conductive strips can be increased freely.

In addition, it is extremely easy to obtain an arc-shaped conductive strip with the required curvature by simply dividing the regular cylinder vertically, and it is possible to reduce the manufacturing labor and save labor compared to the case of cutting or forging a conventional square bar. It is possible to achieve a significant cost reduction.

In addition, it is possible to expect an effect of ensuring a line contact and a contact pressure between the inner flat surface of each arc-shaped conductive strip and the cylindrical plug insertion portion and ensuring a sound and highly reliable contact. Therefore, it is possible to effectively supply a large amount of electric power and effectively solve the problem of pole burning, the operation stop due to this (operation stop due to the operation of the safety device), and the problem that the plug cannot be removed.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 14.

As shown in FIG. 14, a cylindrical material obtained by cutting a long pipe into a constant length is equally divided in the axial direction on its diameter line to form a plurality of arc-shaped conductive strips 1.

Each of the arc-shaped conductive strips 1 is subjected to necessary corner treatment, end face treatment, etc. by removing both edge portions 4 of the inner arc-shaped surface thereof as shown by a broken line 3 in FIG. As shown in FIGS. 3 to 5, the arc-shaped conductive strips 1 are closely arranged and reorganized into a regular cylinder, and the plug insertion holes 6 are opened at both ends defined by the conductive strips 1. Forming a socket body 5 having

The outer peripheral surface of the regular cylindrical socket body 5 is a regular circumferential surface, and the inner peripheral surface of the plug insertion hole 6 is planarized as described above to form a polyhedron.

A plurality of annular grooves 7 are formed at intervals in the axial direction along the outer peripheral surface of the socket body 5, that is, the circumferential surface, and a spring band 8 is wound around the annular grooves 7 and reassembled into the regular cylinder. The main body 5 is bound and shaped.

The spring band 8 is in close contact with all the conductive strips 1 in the annular groove 7 to give a uniform contraction force,
Each conductive strip 1 expands its diameter against the binding force (straining force) of the spring band 8 and shrinks in accordance with the tightening force.

6 to 9 show a fixed plug 9 inserted into one end of the plug insertion hole 6 penetrating the socket body 5, and FIGS. 10 to 13 show a movable plug inserted into the other end.
10 shows that when the plug is press-fitted, the diameter of each of the conductive strips 1 is expanded, and the spring band 8 secures the contact by the elastic force.

In the plugs 9 and 10, the insertion portions 11 and 12 have a cylindrical shape, and the busbars 27 of the plugs 9 and 10 are in pressure contact with the respective inner flat surfaces 2 of the conductive strip 1 group. One of the plugs 9 and 10 is connected to, for example, the electric power side, and the other is connected to the device side. As the connecting means, the projecting ends of the plugs 9 and 10 are provided with flat plate-shaped joints 13 and 14, respectively. Mounting holes 15 and 16 are formed through the side surfaces of the mounting holes 1 and 14, respectively, and as shown in FIG.
It is constructed so that bolts 17 are tightened with 5 and 16. Collars 18 and 19 are provided at the connecting portions between the joints 13 and 14 and the insertion portions 11 and 12, respectively, to set the insertion depth of the plugs 9 and 10, and the mating joints.
Abutting the ends of 20 for positioning and rotation prevention.

A circumferential annular engaging groove 21 is formed across the inner peripheral surface of the cylindrical socket main body 5, that is, the inner side surface of each arc-shaped conductive strip 1, and the annular engaging groove 21 is provided with a mounting hole 26 at the center thereof. A circular mounting metal fitting 22 such as a washer having the above is fitted, and the mounting metal fitting 22 is held in the socket body 5 by the elastic force of the spring band 8 and is press-fitted into the mounting metal fitting 22 from one end of the plug insertion hole 6. The end of the insertion portion 11 of the fixed plug 9 is fixed with the screw 23. That is, a screw hole into which the screw 23 is screwed is formed on the end surface of the insertion portion 11.
25 is provided, and the screw 23 inserted into the mounting hole 26 of the mounting member 22 is screwed into the screw hole 25, and the fixing plug 9 is fixed to the socket body 5 via the mounting member 22. As the screw stopping means, a male screw may be provided so as to project from the end surface of the fixed plug 9, the male screw may be inserted into the mounting hole 26 of the mounting bracket 22, and the nut may be tightened.

The fixed plug 9 can be inserted and removed by releasing the screw 23 with a tool inserted from the other end opening of the plug insertion hole 6.

Further, a bottomed hole 24 is provided on the end surface of the movable plug 10, the head of the screw 23 is housed in the bottomed hole 24, the dead space in the socket is eliminated, and the effective contact length of the plug is secured, The length of the socket body was reduced.

EFFECTS OF THE INVENTION According to the present invention, the outer peripheral surface of the cylindrical socket body formed by binding the arc-shaped conductive strips to each other is a circumferential surface so that the compression force by the spring band is evenly applied to each arc-shaped conductive strip. While providing the effect, the inner peripheral surface of the plug insertion hole is made polyhedral to ensure line contact between the inner flat surface of each arc-shaped conductive strip and the cylindrical plug insertion portion, and it is sound and highly reliable without contact failure. It is possible to obtain contact, thus enabling stable and large power supply, and problems such as pole burning on the contact surface of the plug and socket, resulting in operation stop (operation stop due to the operation of the safety device), and inability to remove the plug. Can effectively solve the problem.

Also, by simply dividing the regular cylinder into equal parts in the axial direction, it is extremely easy to obtain a uniform arc-shaped conductive strip material group with a required curvature. A large cost reduction of this kind of high power supply connector can be achieved without the need for manufacturing, as in the case of finishing in an arc shape.

[Brief description of drawings]

FIG. 1 is a perspective view of a connector showing an embodiment of the present invention, FIG. 2 is a sectional view of an arc-shaped conductive strip, and FIG. 3 is a sectional view of a connector shown by removing a part of the conductive strip. FIG. 4 is a front view of a socket forming the connector, FIG. 5 is a rear view of the same, FIG. 6 is a plan view of a fixed plug, FIG. 7 is a front view of the same, FIG. 8 is a rear view of the same, and FIG. The figure shows the same side view, FIG. 10 shows the movable plug plan view, FIG. 11 shows the same front view, FIG. 12 shows the same rear view, and FIG. 13 shows the same side view.
The figure is an end view of a cylindrical body for explaining an example of dividing and forming an arc-shaped conductive strip from the cylindrical body. 1 ... Arc-shaped conductive strip, 2 ... Inner plane, 5 ... Socket body, 6 ... Plug insertion hole, 7 ... Annular groove, 8 ... Spring band, 9 ... Fixed plug, 10 ... Movable plug,
11, 12 …… Cylindrical insertion part, 13, 14 …… Flat plate type joint, 1
8, 19 ... Tsuba, 21 ... Annular engagement groove, 22 ... Circular mounting bracket, 23 ... Screw, 24 ... Bottomed hole.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-53-122793 (JP, A) SAIKAI Shou 50-133436 (JP, U) JP-B 59-27048 (JP, B2) SUNKOKYO 16- 9382 (JP, Y1) Actual public 28-12469 (JP, Y1) Actual public 58-27492 (JP, Y2) Actual public 52-10060 (JP, Y2) Actual public 51-43416 (JP, Y2) Actual public Sho 51-52702 (JP, Y2)

Claims (1)

(57) [Claims] 1. A cylindrical socket body defining a plug insertion hole is formed by closely arranging arc-shaped conductive strips formed by equally dividing a regular cylindrical body in the axial direction to form a cylindrical socket body. A plurality of annular grooves are formed on the outer peripheral surface of the main body along the circumferential surface thereof, and a spring band is wound around each of the annular grooves to bundle the arc-shaped conductive strips of the cylindrical socket body so as to be expandable and contractible. In addition, the inner peripheral surface of each of the arc-shaped conductive strips is planarized to form an inner flat surface to form a polyhedron-shaped plug insertion hole, and the fixed plug and the movable plug are provided from one end and the other end of the plug insertion hole. A connector in which the inserting portion to be press-fitted is formed into a cylindrical shape, and each busbar thereof is in pressure-contact with the respective plane-finished inner planes of the arc-shaped conductive strip group on the axial line.