JP3930470B2 - Terminal block device - Google Patents

Description

  The present invention relates to a terminal block device connected to a wiring board.

  A terminal block device comprising a terminal block main body formed of an insulating material, a terminal fitting fitted to the terminal block main body and connected to a wiring board, and a wire connecting screw screwed to the terminal fitting. Yes (see, for example, Patent Document 1).

When this terminal block device is used for a wiring board to which a relatively large current is supplied, such as a switching power supply circuit board, the conductor layer of the wiring board cannot withstand a large current with a normal thin and thin copper foil pattern. The width of the pattern, that is, the pattern width is expanded, a thick conductor is formed on the conductor layer of the wiring board (see, for example, Patent Document 2), and a copper plate reinforcement for power supply is installed along the conductor layer of the wiring board. Thus, an electric circuit component is soldered to the copper plate reinforcement (see, for example, Patent Document 3).
Design Registration No. 918408 (first page, AA sectional view) JP-A-10-321971 (page 3, FIG. 1) Japanese Unexamined Patent Publication No. 7-55877 (3rd page, FIG. 2)

  Thus, since the terminal block device is used for the wiring board to which a relatively large current is supplied, there is a problem that it is difficult to reduce the size of the wiring board when the conductor layer of the wiring board is widened. When the thickness of the conductive layer is increased, or when a copper plate reinforcement for power supply is installed along the conductive layer of the wiring board, there is a problem that it takes time and cost.

  The present invention has been made in view of these points, and an object of the present invention is to provide a terminal block device that can achieve downsizing of a wiring board to which a relatively large current is supplied at low cost.

The invention according to claim 1 is a terminal block body formed of an insulating material, a terminal fitting that is fitted to the terminal block body and connected to a wiring board, and an electric wire connecting means that is provided on the terminal fitting and connects an electric wire. And the terminal fitting includes a bracket main body portion to which the electric wire connecting means is attached, an electric circuit portion that is integrally projected from the metal fitting main body portion and is electrically connected to the electric circuit component, and the electric circuit portion. And a board connecting part that is formed by bending a part of the part and is connected to the wiring board, and the metal fitting body part of the terminal metal fitting is divided into a metal fitting body part on the + side and a metal fitting body part on the negative side. The electrical circuit part of the terminal fitting is formed by separating the + -side electrical circuit part and the --side electrical circuit part by separating the connecting part that integrates the + -side electrical circuit part and the --side electrical circuit part. and a terminal block unit, path from fitting main body portion of the terminal fitting wire connecting means is attached Are mounted on the electric circuit part, and the electric circuit parts are mounted and electrically connected to the electric circuit part, and the electric circuit part and the wiring board are connected by the board connecting part, so that the parts can be mounted on the terminal fitting side. By reducing the burden on the wiring board side, the wiring board can be made smaller than when the conductor layer of the wiring board is widened, and more than when the conductor layer of the wiring board is thickened or reinforced with a copper plate In addition, it is possible to reduce the size of the wiring board to which a relatively large current is supplied without taking time and cost, and when the terminal metal fitting is assembled to the terminal block body, The + side metal fitting body and the-side metal fitting main body integrated by the connecting portion of the side electric circuit can be efficiently and simultaneously fitted to the terminal block main body, and after this fitting, By disconnecting the connecting part between the -side electrical circuit part Ru can be those readily independently be.

  According to a second aspect of the present invention, the terminal base body in the terminal base device according to the first aspect has a recess surrounding the wire connecting means, and a terminal provided with a cover plate detachably provided at the opening edge of the recess. By providing the cover plate detachably at the opening edge of the recess surrounding the electric wire connecting means, it is possible to prevent external contact with the electric wire connecting means by the cover plate.

According to a third aspect of the present invention, the terminal block main body in the terminal block device according to the first or second aspect locks the opening for inserting the metal fitting main body of the terminal metal fitting and the metal fitting main body inserted into the opening. The terminal fitting is a terminal block device having a check claw for retaining and locking in a state where the metal fitting main body is inserted up to the locking portion of the terminal block main body. By simply inserting the metal fitting body portion of the terminal fitting up to the stop portion, the metal fitting main body portion can be retained and locked by the check tab of the terminal fitting, so that the terminal fitting can be easily assembled to the terminal base body .

According to the first aspect of the present invention, the electric circuit portion is integrally projected from the metal fitting main body portion of the terminal fitting to which the electric wire connecting means is attached, and the electric circuit component is mounted on the electric circuit portion to be electrically connected. At the same time, by connecting the electrical circuit part and the wiring board with the board connection part, the burden on the wiring board side is reduced by taking charge of component mounting on the terminal fitting side, so that the conductor layer of the wiring board is wider The wiring board can be reduced in size, and it is less time-consuming and less expensive than the case where the conductor layer of the wiring board is thickened or reinforced with a copper plate. In addition, when assembling the terminal bracket to the terminal block body, the + side bracket body section and the minus side bracket body are integrated by the connecting section of the + side electrical path section and the-side electrical path section. Efficiently fitting the part to the terminal block body at the same time Rutotomoni, after the fitting is + side of the electrical path portions - By disconnecting the connection between the side of the electrical path portions, Ru can be those readily independently be.

  According to the second aspect of the present invention, the cover plate can be detachably provided at the opening edge of the recess surrounding the wire connecting means, so that the contact from the outside to the wire connecting means can be prevented by the cover plate.

  According to the third aspect of the present invention, since the metal fitting main body portion can be retained and locked by the non-return claw of the terminal metal fitting only by inserting the metal fitting main body portion of the terminal metal fitting to the engaging portion of the terminal block main body, the terminal block Assembling of the terminal fitting to the main body can be facilitated.

  Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS.

  FIG. 1 shows a terminal block device installed on a wiring board to which a relatively large current is supplied, such as a switching power supply circuit board. The wiring board is placed inside a terminal block body 11 formed of an insulating material, that is, a synthetic resin. The terminal fitting 12 to be connected to is fitted, and the terminal fitting 12 is provided with a screw 13 as a wire connecting means for connecting an electric wire. The screw 13 is screwed to the terminal fitting 12 via the spring washer 14 and the flat washer 15.

  As shown in FIGS. 2 to 7, the terminal metal fitting 12 is a metal fitting body on the + side to which the screw 13 on the + side is attached by, for example, punching, bending, drawing, etc. a copper alloy plate. 16 and the-side metal fitting body 17 to which the-side screw 13 is attached are separated from each other, and electric circuit parts are mounted from the + side metal fitting body 16 and the-side metal fitting body 17. The + side electric circuit part 18 and the − side electric circuit part 19 that are electrically connected to each other are integrally projected, and the leads of the electric circuit component W are connected to these + side and − side electric circuit parts 18 and 19, respectively. A plurality of board connection parts are formed in which lead insertion holes 21 for insertion and soldering are drilled, and further, some of these electric circuit parts 18 and 19 are bent downward and connected to the wiring board. 22 is formed.

  The terminal block main body 11 has a recess 25 surrounding the screw 13 on the + side and the − side by a side plate portion 23 that is protruded and formed on both left and right sides and a partition plate portion 24 that is protruded and formed on the center portion. A cover plate 26 made of a transparent resin is detachably provided at the opening edges of the recesses 25. A tool insertion hole 27 for inserting a screwdriver is opened in the cover plate 26 at a position corresponding to each screw 13.

  That is, as shown in FIG. 1, the side plate portions 23 on the left and right sides of the terminal block body 11 are respectively provided with cover plate fitting recesses 28 for fitting the cover plate 26, and the central partition plate The part 24 is provided with a cover plate receiving surface 29 for receiving the cover plate 26 at the same level as the left and right cover plate fitting recesses 28. Further, as shown in FIG. Cover plate engagement holes 31 for locking the cover plate 26 are provided in the center of each continuous side plate portion 23, respectively, while, as shown in FIG. Are integrally formed with cover plate engaging convex portions 32 engaged with the respective cover plate engaging holes 31 on the terminal block main body 11 side.

  Further, each of the + and-side metal fittings 16 and 17 of the terminal metal 12 is connected to an electric wire provided with a screw threaded portion 33 into which a screw 13 is screwed, as shown in FIGS. The upper plate portion 35 and the lower plate portion 36 are bent and formed integrally with the surface portion 34, and convex portions 37 are provided on the left and right end surface portions of the upper plate portion 35 and the lower plate portion 36, respectively. ing.

  Further, as shown in FIG. 8, the terminal block body 11 has a + side and − side opening 41 into which the + side metal body 16 and the − side metal body 17 of the terminal metal 12 are inserted. Each of the four corners of the opening 41 is provided with a groove 42 from the side shown in FIG. 4 as shown in FIG. 11, and these grooves 42 are shown in FIG. 10 and FIG. The upper plate portion 35 and the convex portion 37 of the lower plate portion 36 of the metal fitting main body portions 16 and 17 are fitted.

  Further, as shown in FIG. 11, at the back end of each concave groove portion 42 of the terminal block main body 11, a locking portion 43 that locks the convex portions 37 of the metal fitting main body portions 16 and 17 inserted into the respective opening portions 41. On the other hand, the protrusions 37 of the metal fittings 16 and 17 are removed from the terminal fittings 12 with the protrusions 37 inserted up to the locking parts 43 of the terminal block main body 11 as shown in FIG. A check claw 44 for locking and locking is provided in a saw blade shape as shown in FIG.

  As shown in FIG. 10, the terminal fitting 12 includes a plus-side electric circuit portion 18 that is integral with the plus-side fitting body portion 16 and a minus-side electric circuit portion 19 that is integral with the minus-side fitting body portion 17. It is formed so as to be separable via a plurality of connecting portions 45 and 46.

  That is, the + side electric circuit portion 18 and the − side electric circuit portion 19 are integrated so as to be separable by a plurality of connecting portions 45 and 46, but the terminal fitting 12 is assembled to the terminal block body 11. Later, each connecting portion 45, 46 is removed as shown in FIG. The + side and − side electric circuit portions 18 and 19 are respectively formed in a plurality of flat plate-like electric circuit portions 18a and 19a, and side plate-shaped electric circuit portions 18b and 19b that connect these flat electric circuit portions 18a and 19a. And three-dimensionally.

  Next, a method for assembling and using the terminal block device will be described.

  As shown in FIG. 10, the + side and − side bracket main bodies 16 and 17 of the terminal bracket 12 in which the + side electrical path portion 18 and the − side electrical path portion 19 are integrated at the connecting portions 45 and 46, The terminal block body 11 is simultaneously inserted into the openings 41 on the + side and the − side.

  At this time, as shown in FIG. 11 to FIG. 12, the convex portion 37 provided in the metal fitting main body portions 16 and 17 of the terminal metal fitting 12 is inserted into the concave groove portion 42 of the terminal block main body 11, and the convex portion 37 is concave. When press-fitting until it hits the locking portion 43 located at the back end of the groove 42, the check pawl 44 bites into the inner surface of the terminal block body 11 and prevents the terminal fitting 12 from being pulled out. Can be assembled easily.

  In this way, after assembling the terminal fitting 12 to the terminal block body 11, the connecting portions 45 and 46 are removed by removing such as a press, so that the + side electric circuit portion 18 and the − side electric circuit portion 19 Isolate. When the terminal metal fitting 12 is assembled to the terminal base body 11 in a state where the + side electric circuit portion 18 and the − side electric circuit portion 19 are integrated by the connecting portions 45 and 46, it can be assembled efficiently.

  The screw 13 may be screwed into the screw threaded portion 33 of the terminal fitting 12 assembled to the terminal block body 11, but the screw 13 may be screwed into the screw threaded portion 33 of the terminal bracket 12 before being assembled to the terminal block body 11. Alternatively, it may be screwed in advance through the spring washer 14 and the flat washer 15.

  Further, while inserting the cover plate engaging convex portions 32 at both the left and right ends of the cover plate 26 into the cover plate engaging holes 31 provided in the left and right side plate portions 23 of the terminal block main body 11, the cover of each side plate portion 23 is inserted. The left and right sides of the cover plate 26 are fitted into the plate fitting recess 28, and the cover plate 26 prevents external test fingers and the like from coming into contact with the screw 13.

  As shown in FIG. 2, a capacitor, a transformer, or the like of a power supply circuit that receives a relatively large current is supplied to the lead insertion hole 21 of the plus side electric circuit portion 18 and the minus side electric circuit portion 19 of the terminal fitting 12. The lead of the electric circuit component W is inserted and soldered, and the plurality of board connecting portions 22 of the terminal fitting 12 mounted with this component are inserted into the holes of the wiring board P as shown in FIGS. Then, fix by soldering from the bottom.

  At that time, the board connection portion 22 of the terminal fitting 12 is inserted into the lead insertion hole of the wiring circuit pattern of the wiring board P and electrically connected by soldering, or inserted into the mounting hole of the wiring board P and soldered. To connect mechanically. Further, the electric circuit component W may be connected across the plus-side electric circuit portion 18 and the minus-side electric circuit portion 19 of the terminal fitting 12, or one of these electric circuit portions 18 and 19 and the wiring circuit of the wiring board P. You may connect over a pattern.

  When connecting the power supply side electric wire to this terminal block device, the screw 13 is loosened with a screwdriver inserted through the tool insertion hole 27 of the cover plate 26, and the electric wire connection surface 34 of the metal fittings 16 and 17 and the flat washer 15 The terminal board on the electric wire side is inserted between and the screw 13 is tightened.

  Next, the effect of this terminal block device will be described.

  Electrical circuit parts 18 and 19 are integrally projected from the metal body parts 16 and 17 of the terminal metal 12 to which the screws 13 are attached, and electrical circuit parts W are mounted on these electrical circuit parts 18 and 19 for electrical connection. At the same time, by connecting these electric circuit sections 18 and 19 and the wiring board P with the board connecting section 22, the burden on the wiring board P side is reduced by taking charge of component mounting on the terminal fitting 12 side. The wiring board P can be made smaller than when the conductor layer of the board P is widened, and it is relatively large and requires less labor and cost than the case where the conductor layer of the wiring board P is thickened or reinforced with a copper plate. Miniaturization of the wiring board P to which current is supplied can be achieved at low cost.

  Further, by providing a detachable transparent cover plate 26 at the opening edge of the recess 25 surrounding the screw 13, external contact with the screw 13 can be prevented by the cover plate 26, and the tool insertion hole 27 of the cover plate 26 can be prevented. Since the tip of the inserted screwdriver can be seen through, the screw 13 can be easily loosened and tightened.

  Furthermore, only by inserting the terminal fitting 12 until the convex portion 37 of the metal fitting main body portions 16 and 17 comes into contact with the locking portion 43 in the terminal block main body 11, the metal fitting main body portion 16, Since 17 can be retained and locked, the terminal fitting 12 can be easily assembled to the terminal block body 11.

  In particular, when the terminal fitting 12 is assembled to the terminal block body 11, the + side fitting main body portion 16 and − integrated by the connecting portions 45 and 46 of the + side electric circuit portion 18 and the − side electric circuit portion 19 are provided. The fitting body 17 on the side can be efficiently fitted to the terminal block body 11 at the same time, and after this fitting, the connecting parts 45 and 46 are removed to connect the electric circuit part 18 on the + side and the electric circuit part 19 on the − side. By separating them, they can be easily made independent.

It is a perspective view which shows one Embodiment of the terminal block apparatus which concerns on this invention. It is a top view of a terminal block apparatus same as the above. It is a front view of a terminal block apparatus same as the above. It is a rear view of a terminal block apparatus same as the above. It is a side view of a terminal block apparatus same as the above. It is the VI-VI sectional view taken on the line of FIG. It is the VII-VII sectional view taken on the line of FIG. It is the front view which notched a part of terminal block main body of the terminal block apparatus same as the above. It is a front view of the cover board of a terminal block apparatus same as the above. It is a disassembled top view of a terminal block apparatus same as the above. It is the disassembled side view which notched a part of terminal block apparatus same as the above. It is the side view which notched some terminal block devices same as the above.

Explanation of symbols

11 Terminal block
12 Terminal bracket
13 Screws as wire connection means
16, 17 bracket body
18, 19 Electrical circuit
22 Board connection
25 recess
26 Cover plate
41 opening
43 Locking part
44 Check claw
45,46 Connecting part P Wiring board W Electric circuit parts

Claims (3)

A terminal block body formed of an insulating material;
Terminal fittings fitted to the terminal block body and connected to the wiring board,
It is provided with a wire connecting means for connecting the wire provided on this terminal fitting,
The terminal bracket is
A metal fitting body to which a wire connecting means is attached;
An electric circuit portion that is integrally projected from the metal fitting main body portion and on which an electric circuit component is mounted and electrically connected,
A board connecting part formed by bending a part of the electric circuit part and connected to the wiring board ,
The metal fitting body of the terminal fitting has a + -side metal fitting main-body portion and a --side metal fitting main-body portion formed separately,
The electrical circuit part of the terminal metal fitting is characterized in that the + -side electrical circuit part and the --side electrical circuit part are separated and formed by separating the connecting part that integrates the + -side electrical circuit part and the --side electrical circuit part. Terminal block device. The terminal block body has a recess surrounding the wire connecting means,
The terminal block device according to claim 1, further comprising a cover plate detachably provided at an opening edge of the recess. The terminal block body is
An opening for inserting the metal fitting body of the terminal fitting,
A locking portion for locking the metal fitting main body inserted in the opening,
The terminal bracket is
The terminal block device according to claim 1, further comprising a check claw that holds and holds the metal fitting main body portion in a state where the metal fitting main body portion is inserted to the locking portion of the terminal block main body.

Images