JP4587922B2 - Terminal blocks and lighting fixtures - Google Patents

Description

  The present invention relates to a terminal block such as a power supply terminal block for connecting a power source to an electronic circuit built in, for example, a guide light lighting device or an emergency light lighting device, and a lighting device using the terminal block.

  A conventional lighting fixture of this type includes a lighting circuit unit having a ballast and the like, and a power terminal block connected to the lighting circuit unit by a lead wire. The power terminal block is provided with a quick connection terminal, and a power line is fast connected to the power terminal block to supply power to the lighting circuit section.

  However, when electrical connection is made from the printed circuit board of the lighting circuit section to the power supply terminal block, the soldering terminal section provided on the printed circuit board and the power supply terminal block fixed to the instrument body are connected by lead wires. For this reason, there is a problem that manpower is required to connect the wires and the cost is increased.

On the other hand, it is conceivable to connect the power terminal block and the printed circuit board with a blade-shaped terminal and a connector instead of the lead wire (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 9-245862

  However, the external force applied to the power supply terminal when connecting the wire to the quick connection terminal and the external force applied when removing the wire from the quick connection terminal are twisted or deformed, and the external force is applied to the connector to solder the connector. There was a possibility that a crack occurred in the part and a connection failure occurred.

  Accordingly, an object of the present invention is to provide a terminal block and a lighting fixture capable of preventing the occurrence of poor connection when using a blade terminal.

The terminal block of the present invention includes a housing having an electric wire insertion hole, a quick connection terminal provided in the housing for quick connection of an electric wire inserted from the electric wire insertion hole, and the quick connection terminal connected to the quick connection terminal. A blade terminal that is partly exposed from the housing and press-contacted to a connector provided on a mounted body to which the housing is attached ;
The housing comprises a body and a cover, the body forms a terminal receiving groove at the bottom, and forms a slit at the end of the terminal receiving groove,
The quick connection terminal and the blade-shaped terminal are provided on a common elongated conductive plate so as to be arranged on the mounting surface of the body , the conductive plate is stored in the terminal storage groove, and the blade-shaped terminal is connected to the blade-shaped terminal. It is inserted through the slit and protrudes outside .
The wire insertion hole is on a plane connecting the quick connection terminal and the blade terminal of the cover and is inclined with respect to the mounting surface of the body in a direction along the blade surface of the blade terminal;
The cover has a terminal pressing piece that covers the blade-shaped terminal, and the terminal pressing piece abuts on an upper end of the blade-shaped terminal so that the blade-shaped terminal can be pressed when the blade-shaped terminal is inserted into the connector .
The blade-shaped terminal is disposed on the body so that the blade-shaped terminal is inserted into the connector at the same time that the mounting surface of the body is mounted on the mounted body.

In the above configuration, the speed sintered terminal is more aligned to the body, and as the cutting shaped terminal is arranged at equal intervals from each other along with is provided for each said speed imaging terminal, the body plurality of the The wire insertion holes provided corresponding to the quick-connect terminals have a plurality of the terminal receiving grooves for storing the conductive plate, the slits corresponding to the terminal storing grooves, and substantially equal intervals. A plurality of holes for power supply terminals arranged at intervals, and holes for ground terminals arranged at intervals different from the intervals with respect to the holes for power supply terminals.

  The said structure WHEREIN: The said blade-shaped terminal has a rib extended toward the said rear end from the position near the rear end rather than the insertion front-end | tip.

  The lighting fixture of the present invention uses the terminal block having the above configuration.

  According to the terminal block of the present invention, by connecting the blade-shaped terminal to the connector, for example, an electric wire connecting the power supply terminal block and the electronic circuit becomes unnecessary. In particular, a small guide light illuminating device is advantageous when wiring is difficult because there is little work space for wiring inside the device, and when the number of connections is large, the number of assembly steps can be greatly reduced.

  Since the force at the time of inserting the electric wire is in the direction along the blade surface of the blade-shaped terminal, there is no possibility that an external force is applied to the connector, and no crack is generated in the soldered portion of the connector. On the other hand, if the wire is inserted from a direction different from the insertion direction of the blade terminal, a force is also applied from the side to the blade terminal, resulting in pushing the connector from the side. But external force will be added.

In addition, since the wire insertion hole is inclined with respect to the mounting surface of the housing, the overall height of the wire connection can be reduced. It is effective. Further, by bringing the blade-shaped terminal and the cover into contact with each other, the blade-shaped terminal can be surely pressed into the connector when connected to the receiving portion of the connector.

  Further, since the difference in pitch between the electric wire insertion holes can be easily visually recognized, the ground terminal can be easily identified, and the power supply line can be prevented from being erroneously connected to the ground terminal. In particular, when used for emergency light illuminators and guide light illuminators, the power supply has 3 poles and 1 pole for the ground. Since there are two gaps, they can be equally spaced to identify terminals with different gaps. Especially effective. Generally the wide portion in the two-pole and the ground electrode and the narrow portion to be used is difficult to identify which is whether a special pitch for one each. On the other hand, since the blade-shaped terminal side has an equal pitch, an inexpensive general-purpose connector can be used, and a printed circuit board can be easily designed and produced.

  When inserting into the connector, the part without the rib at the insertion tip of the blade terminal serves as a guide, making insertion easier, and the blade terminal thickens by the rib, so there is an effect of reinforcing the blade terminal At the same time, the stroke with respect to the spring portion of the connector is increased, the deformation allowance of the spring portion of the connector can be increased, and the contact reliability is improved. In addition, deformation during transportation and assembly can be prevented by the reinforcing effect of the blade terminal.

  A power terminal block according to an embodiment of the present invention will be described with reference to FIGS. That is, this power terminal block houses the quick connection terminal 2 in the housing 1. The housing 1 includes a resin body 3 and a resin cover 4. The body 3 has a shallow bottom box shape, and its periphery is composed of a front end wall 5, a rear end wall 6, and both side walls 7 and 8, and an outer surface of the bottom portion is a mounting surface 3a. The rear end wall 6 and the side walls 7 and 8 have the same height, but the front end wall 5 forms a step 9 that protrudes outwardly to the same height as the other walls. Further, a support wall 10 is erected from the tip of each of them. In the body 3, a plurality of strips 11, for example, four strips 11 are provided so as to connect the front end wall 5 and the rear end wall 6, and the center of the grooves formed between the partition walls 11 and the side walls 7, 8 is provided. The four strips excluding the grooves serve as terminal storage grooves 12. Terminal support slits 13 are formed in the support wall 10 so as to be positioned in these terminal storage grooves 12. Further, a recess 14 that narrows the width of the front end wall 5 is formed near the front end wall 5 of the one side wall 8. Further, cover attachment claws 15 that serve as connecting portions are provided on both side walls 7 and 8, respectively. Reference numeral 50 denotes a positioning portion formed on the attachment surface 3a using, for example, a hole.

  The cover 4 has a similar shape that meshes with the body 3, and is provided with a terminal pressing piece 16 that projects forward without covering the front surface of the front end wall 5. A connecting hole 46 serving as a connecting receiving portion for fitting the cover attaching claws 15 is formed in the both side walls 7 and 8 of the cover 4 and the attaching portion 17 is located above the opening end of the cover 4 and projects outward. Yes. Reference numeral 18 denotes a screw insertion hole, and reference numeral 19 denotes a convex portion, which is used for positioning to prevent displacement of the power terminal block mounting portion 17 due to the difference between the diameter of the screw insertion hole 18 and the diameter of the screw inserted therethrough. This reliably prevents the power supply terminal block from being moved by an external force applied when the electric wire is inserted into or removed from the quick connection terminal 2 and prevents deformation such as twisting when the blade-shaped terminal 36, which will be described later, is inserted. The purpose is to do.

  The upper surface of the cover 4 is formed in a waveform from the front end to the rear end. There are two corrugated peaks, and electric wire insertion holes 24a to 24d and 25a to 25d are formed on the inclined surfaces 20 and 22 of the inclined surfaces 20 to 23 facing the terminal pressing piece 16 respectively. These wire insertion holes 24 a to 24 d and 25 a to 25 d are formed so as to face the four terminal storage grooves 12 of the body 3. In this case, the interval between the three wire insertion holes 24a to 24c and the interval between the wire insertion holes 25a to 25c are equal to the interval L1, but adjacent to the wire insertion holes 24d and 25d facing the terminal storage groove 12 with the recess 14. The distance L2 between the electric wire insertion holes 24c and 25c is larger than the other distance L1, and identification protrusions 26 are provided between the electric wire insertion holes 24c and 24d and in the electric wire insertion holes 25c and 25d. The identification protrusion 26 indicates that the wire insertion holes 24d and 25d located at the ends are for ground terminals, and facilitates identification from the power supply terminal wire insertion holes 24a to 24c and 25a to 25c. The other inclined surfaces 21 and 23 of the cover 4 are integrally formed with a wire release portion 28 so as to straddle the adjacent terminal storage grooves 12 of the body 3. Each electric wire release part 28 releases simultaneously the electric wire of the quick connection terminal 2 accommodated in the terminal storage groove 12 adjacent to each other.

  The quick connection terminal 2 is formed by an elongated conductive plate 30 stored in each terminal storage groove 12. The conductive plates 30 housed in the terminal housing grooves 12 on both sides of the body 3 are respectively provided with two terminal portions 31 corresponding to the corrugated peaks of the cover 4 on the sides opposite to the side walls 7 and 8 on opposite sides. Raised. The terminal portion 31 is formed with a locking piece 32, an electric wire connection portion 33 and an electric wire contact portion 34. The wire insertion portion between the locking piece 32 and the wire connection portion 33 is inclined so as to oppose the wire insertion holes 24 a, 24 d, 25 a, 25 d, and the inclined surfaces 21, 23 with the wire release portions 28 of the cover 4. Located inside. Therefore, when an electric wire is inserted from the electric wire insertion holes 24a, 24d, 25a, and 25d, the tip of the electric wire is inserted between the locking piece 32 and the electric wire connecting portion 33, and a connected state is brought into contact with the electric wire contact portion 34. . Further, when the electric wire release portion 28 is pushed in this state, the locking piece 32 is pressed, the biting of the locking piece 32 into the electric wire is released, and the electric wire can be pulled out.

Further, the blade terminal 36 is bent so as to rise from a side portion of one end portion accommodated on the front end wall 5 side of the body 3 of the conductive plate 30 . The blade terminal 36 extends forward in an inverted L shape from the front end of the conductive plate 30. The blade terminal 36 is inserted through the slit 13 of the support wall 10 in a state where the conductive plate 30 is housed in the terminal housing groove 12, and is positioned and prevented from being deformed. Further, a longitudinally long rib 37 is formed at the tip of the blade-shaped terminal 36, and the lower end of the rib 37 is located slightly above the lower end of the blade-shaped terminal 36, that is, the insertion end, that is, closer to the rear end. It extends to the upper end (rear end).

  From the above, the quick connection terminal 2 and the blade-shaped terminal 36 are arranged on the mounting surface at the bottom of the housing 7, and the electric wire insertion holes 24 a to 24 d and 25 a to 25 d are on the plane connecting the quick connection terminal 2 and the blade-shaped terminal 36. Thus, a configuration along the blade surface including the insertion direction of the blade-shaped terminal 36 and further inclined with respect to the mounting surface of the housing 7 is obtained.

The quick connection terminal 2 and the blade-shaped terminal 36 are raised from the same side portion of the conductive plate 30, and every other conductive plate 30 of the four conductive plates 30 arranged from the same side portion of the conductive plate 30. The terminal portion 31 and the blade-shaped terminal 36 are raised, and the terminal portion 31 and the blade-shaped terminal 36 of the adjacent conductive plate 30 are raised from the opposite side portion of the conductive plate 30 to have a symmetrical shape. Of the quick connection terminals 2, those stored in the terminal storage grooves 12 adjacent to the recesses 14 are for grounding, and others are for power supply or for feeding. In this case, the blade-shaped terminals 36 are arranged at equal intervals by making the intervals of the slits 13 the same. On the other hand, the power connection terminals of the quick connection terminal 2 are arranged at equal intervals L1 between the wire insertion holes 24a to 24c and 25a to 25c, and a ground terminal and a power supply terminal adjacent thereto are arranged. Is arranged such that the distance L2 between the wire insertion holes 24d and 25d and the wire insertion holes 24c and 25c is larger than the mutual distance L1 between the wire insertion holes 24a to 24c and 25a to 25c of the power supply terminal. .

  Further, the ground terminal of the quick connection terminal 2 bends the ground terminal 38 on the conductive plate 30 and protrudes to the outside from the slit 39 formed in the body 7. When the body 7 is attached to the metal attachment plate, The formed ground terminal contact portion, for example, is inserted into a grounding hole and press-contacted.

  The power terminal block is assembled by housing the quick connection terminal 2 in the body 3, passing the blade-shaped terminal 36 through the slit 13, passing the ground terminal 38 through the slit 39, and closing the cover 4 to the body 3. At this time, the lower surface of the terminal pressing piece 16 of the cover 4 is in contact with the upper end of the blade-shaped terminal 36.

  Thus, by extending the blade-shaped terminal 36 to the cover 4 and sandwiching the blade-shaped terminal 36 in the slit 13 of the body 3, it is possible to prevent the blade-shaped terminal 36 from fluctuating or deforming in the lateral direction. By bringing the blade terminal 36 and the cover 4 into contact, the blade terminal 36 can be reliably pressed into the connector 40 when connecting to the receiving portion 41 of the connector 40.

  The power terminal block is attached to the mounting plate so as to be connected to a connector 40 of a printed circuit board provided on, for example, a metal mounting plate serving as a body to be attached. As shown in FIG. 7, the mounting surface 3 a of the body 3 is placed on the mounting plate while the blade-shaped terminal 36 is inserted into the receiving portion (receiving blade) 41 of the connector 40, and is provided on the mounting plate through the screw insertion hole 18 of the mounting portion 17. Tighten the screws into the screw holes in the base-shaped mounting receiving part and fix them. At this time, by pressing the terminal pressing piece 16 of the cover 4, the blade-shaped terminal 36 can be reliably inserted into the receiving portion 41. A side wall is provided on the mounting plate 55 or the connector 40 corresponding to the convex portion 19, and a concave portion (not shown) for positioning the convex portion 19 is formed on the side wall.

  FIGS. 8B to 8D illustrate the insertion operation of the blade terminal 36. FIG. 8B shows a state in which the blade terminal 36 is not in contact with the spring receiving portion 41, and FIG. 8C shows a state in which the blade terminal 36 is in contact with the receiving portion 41. This is the distance B until it comes into contact with the portion 41. FIG. 8D shows a state where the blade-shaped terminal 36 is completely attached to the receiving portion 41 and the receiving portion 41 is pressed. On the other hand, FIG. 8 (e) shows an example in which the rib 37 extends to the lower end of the blade terminal 36. In this case, the distance A until contact with the receiving portion 41 is shorter than the distance B as compared with the above-described embodiment. Strength increases.

FIG. 9 shows the connection of the jumper wires, and FIG. 9A shows an example in which the jumper wires 44 are connected to the two central wire insertion holes 24b and 24c. It can be cut when the connecting wire 44 is removed, and can be removed by pushing the individual wire release portions 28 from the upper surface. When connecting the crossover wire 45 between the power supply terminal of the electric wire insertion hole 24a opposite to the grounding terminal and the power supply terminal of the electric wire insertion hole 24b adjacent to the terminal, it is arranged over the two speed connection terminals 2. It can be removed by operating the two wire release portions 28. FIG. 9B is an example in which the connecting wire 46 is connected between the wire insertion holes 24 c and 25 b having different corrugated peaks on the upper surface of the cover 4 in the former example of FIG. Deformation allowance can be secured and workability is improved. In either case, since the crossover can be mounted along the inclination of the electric wire insertion hole, the workability is good and the terminal block height after the connection can be kept low.

  10 to 13 show a guide light luminaire. Reference numeral 65 denotes a body that can be attached to the ceiling or wall of a guide light illuminator, 66 is a circuit block mounted on the printed circuit board 66a, 67 is an attachment hole for wall attachment, and 68 is a wire insertion hole. As the diameter of the electric wire increases, it becomes difficult to perform the bending process. However, forming the electric wire insertion hole obliquely facilitates insertion. Reference numeral 77 denotes a side wall provided on the connector 40 or the mounting plate 55 and positioned on the front end side portion of the power terminal block and having a concave portion in which the convex portion 19 is positioned and fitted.

  FIG. 14 shows another embodiment, in which a protrusion 47 that contacts the surface of the blade-shaped terminal 36 is provided on the lower surface of the terminal pressing piece 16 of the cover 4. The blade-shaped terminal 36 is prevented from shaking when inserted into the receiving portion 41, and the steadying effect is enhanced.

  The cover mounting claw 15 and the connecting hole 46 are concave and convex fitting means, and a projection such as a claw may be provided on the cover 4 side and a concave portion may be provided on the body 3 side. You may support the intermediate part of the blade-shaped terminal 36 by providing the notch which the base part of the blade-shaped terminal 36 passes in the corner | angular part where the front end wall 5 and the step part 9 of the body 3 continue.

(A) is the perspective view which looked at the power supply terminal block of one Embodiment of this invention from the front upper direction, (b) is a top view. It is the perspective view which looked at the power terminal block from the upper part. It is the perspective view which looked at the power terminal block from the lower part. It is the disassembled perspective view seen from one side of the state which removed the cover. It is the disassembled perspective view seen from the other of the state which removed the cover. FIG. It is a fragmentary perspective view explaining the operation | work which connects a blade-shaped terminal to a connector. It is explanatory drawing explaining the insertion operation to the receiving part of a blade-shaped terminal. It is a perspective view which shows the connection state of a crossover. It is an external appearance perspective view of a guide light lighting fixture. It is sectional drawing of the state which opened the cover of the container. It is a top view. It is a fragmentary perspective view which shows a circuit block and a power supply terminal block. It is the perspective view seen from the bottom face side of another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Fast connection terminal 3 Body 4 Cover 13 Slit 24a-24d Electric wire insertion hole 25a-25d Electric wire insertion hole 36 Blade-shaped terminal 37 Rib

Claims (4)

A housing having an electric wire insertion hole; a quick connection terminal provided in the housing for quick connection of an electric wire inserted from the electric wire insertion hole; and a portion connected to the quick connection terminal and exposed from the housing. A blade-shaped terminal that is press-contacted to a connector provided on an attached body to which the housing is attached ,
The housing comprises a body and a cover, the body forms a terminal receiving groove at the bottom, and forms a slit at the end of the terminal receiving groove,
The quick connection terminal and the blade-shaped terminal are provided on a common elongated conductive plate so as to be arranged on the mounting surface of the body , the conductive plate is stored in the terminal storage groove, and the blade-shaped terminal is connected to the blade-shaped terminal. It is inserted through the slit and protrudes outside .
The wire insertion hole is on a plane connecting the quick connection terminal and the blade terminal of the cover and is inclined with respect to the mounting surface of the body in a direction along the blade surface of the blade terminal;
The cover has a terminal pressing piece that covers the blade-shaped terminal, and the terminal pressing piece abuts on an upper end of the blade-shaped terminal so that the blade-shaped terminal can be pressed when the blade-shaped terminal is inserted into the connector .
The blade-shaped terminal is a terminal block disposed on the body so that the blade-shaped terminal is inserted into the connector at the same time that the mounting surface of the body is mounted on the mounted body. The body accommodates a plurality of the conductive plates so that a plurality of the quick connection terminals are arranged in parallel with the body , and the blade-shaped terminals are provided for each of the quick connection terminals and are arranged in parallel at equal intervals. The wire insertion holes provided corresponding to the quick-connection terminals are arranged at substantially equal intervals. The terminal block according to claim 1, further comprising: a plurality of holes for power terminals, and holes for ground terminals arranged at intervals different from the intervals with respect to the holes for power terminals.   The terminal block according to claim 2, wherein the blade-shaped terminal has a rib extending from the position closer to the rear end than the insertion tip toward the rear end.   The lighting fixture using the terminal block as described in any one of Claims 1-3.

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