JP4644080B2 - Terminal block - 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.

  As a conventional lighting fixture using this type of power terminal block, a lighting circuit unit having a ballast and the like, and a power terminal block connected to the lighting circuit unit by lead wires are provided. A terminal device such as a quick connection terminal is provided on the power supply terminal block, and a power supply line is fast connected to the terminal device to supply power to the lighting circuit unit (see, for example, Patent Document 1).

  However, the power terminal block is used to connect a power line that may be subjected to a large external force during the wiring work, but usually a soft electric wire for the instrument is often used for the connection on the instrument side. In addition, it is necessary to connect a plurality of electric wires for connection on the appliance side, and it takes time to assemble the appliance. Especially, there are small and thin guide light lighting fixtures. There was a problem that the work space was small and the work was more difficult.

  In addition, some power terminal blocks for directly connecting to an electronic circuit for lighting an appliance directly solder the printed circuit board. However, since the connection of the power supply wire is performed at the time of installation of the equipment and is performed by an electrician or the like, a large external force may be applied, so if the power supply terminal block is not firmly attached, cracks will occur in the soldering part There was a problem that it was difficult to handle.

Further, there is one that is connected by inserting a jack portion provided on a terminal block into a tab terminal (for example, see Patent Document 2).
JP 2000-243478 A Japanese Patent Laid-Open No. 9-245862

  However, the work of inserting the jack portion into the tab terminal is complicated, and this becomes more significant as the number of jack portions increases.

  Accordingly, an object of the present invention is to provide a terminal block that is easy to connect to the lighting circuit section and can be reliably connected.

Terminal block of the present invention is attached to the attachment receiving portion of the attached body attached receiving portion and having a plurality of positioning receiving portions. The housing has an attachment portion to be attached to the attachment receiving portion and an electric wire insertion hole. The quick connection terminal is provided in the housing to quickly connect the electric wire inserted from the electric wire insertion hole. The blade-shaped terminal is connected to the quick-connect terminal, and a part of the blade-shaped terminal is exposed from the housing and is press-connected to a connector fixed to the attached body. The housing has a plurality of positioning portions that are positioned on the positioning receiving portion so that the blade-shaped terminals can be pressure-connected to the connector. The positioning portion and the positioning receiving portion are set so that the positioning portion is positioned on the positioning receiving portion before the blade-shaped terminal is pressed against the connector.

  In the above configuration, the positioning receiving portion is a pin, and the positioning portion is a positioning hole into which the pin is fitted.

  In the above configuration, the positioning hole also serves as a screw mounting hole of the terminal block.

  In the above configuration, the positioning portion is a protrusion, and the positioning receiving portion is a recess into which the protrusion is fitted.

  The said structure WHEREIN: The said quick connection terminal and the said blade-shaped terminal are integrally formed by the substantially linear form on the one conductive plate.

  According to the terminal block of the present invention, since the blade-shaped terminal is positioned on the mounted body by the positioning portion before connecting to the connector, for example, the power terminal block can be easily connected to the connector without misalignment. , Contact reliability is improved.

  Since the power terminal block is already positioned when the power terminal block is fixed to the mounted body by the mounting portion, repositioning becomes unnecessary. Thereby, it can prevent that a load is applied to the soldering part of a connector by moving a power supply terminal block at the time of realignment.

  If the positioning hole is also used as a screw mounting hole, the positioning hole can be used for mounting from the back side when positioning is not required depending on how the power supply terminal block is used, thus improving usability.

  Since the quick connection terminal and the blade terminal are integrally formed on the conductive plate on a substantially straight line, lateral force is applied to the blade terminal not only when installing the power terminal block but also when connecting the power line. Can be prevented from being applied to the soldered portion of the connector via the blade-shaped terminal. There is also an effect that the material yield is improved.

  A power supply terminal block according to a first embodiment of the present invention will be described with reference to FIGS. That is, the power terminal block houses the quick connection terminal 2 in the housing 1 provided with the positioning portion 50.

  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.

  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, identification protrusions 26 are provided between the wire insertion holes 24c and 24d and in the 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. Launched. 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-shaped terminal 36 and the quick connection terminal 2 are provided in a substantially straight line with a conductive plate 30 that is a thin plate as a connecting portion. In addition, each conductive plate 30 is bent and raised in the same direction from the same side portion to reduce material loss. FIG. 5 (b) shows the unfolded state of the conductive plate, the punched state of the plate material, and the broken line is a folding line. 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, and the upper end is the blade-shaped terminal 36. It extends to the upper end (rear end).

  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.

  Further, the ground terminal of the quick connection terminal 2 is formed by bending a ground terminal 38 on the conductive plate 30 and projecting outside the mounting surface 3a through a slit 39 formed on the bottom of the body 7, and the body 7 is mounted on a metal mounting plate, which will be described later. When being attached to 55, it is inserted into a grounding hole to be a ground terminal contact portion formed on the mounting plate 55, and is 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.

  The power supply terminal block is attached to the attachment plate 55 so as to be connected to the connector 40 of the printed circuit board provided on the metal attachment plate 55 of the vessel body to be attached. The positioning portions 50 are formed at substantially the center near the front and rear end portions of the body 3, respectively. The positioning portion 50 is formed by a hole, and the positioning receiving portion 56 of the mounting plate 55 is formed by a pin that fits into the hole. The positioning portion 50 starts to be fitted to the positioning receiving portion 56 before the blade-shaped terminal 36 is inserted into the receiving portion (receiving blade) 41 of the connector 40, and the power terminal block is positioned to the mounting plate 55. While being positioned, the blade terminal 36 is inserted into the receiving portion 41 of the connector 40, the mounting surface 3 a of the body 3 is placed on the mounting plate 55, and the mounting plate 55 passes through the screw insertion hole 18 of the mounting portion 17 after the blade terminal 36 is pressed. Tighten the screw to the screw hole of the base-shaped mounting receiving part. 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 corresponding to the convex portion 19, and a concave portion (not shown) for positioning the convex portion 19 is formed on the side wall.

  As described above, since the positioning pin is fitted into the hole of the power supply terminal block and the position is fixed sooner than the blade terminal 36 is inserted into the connector 40, a lateral displacement load is not generated in the connector energizing portion.

  Note that the hole of the positioning portion 50 can be used as a screw mounting hole, for example, when positioning is not required depending on the usage. In this case, an internal thread can be formed in the hole or the internal thread can be formed by tapping.

  6 to 9 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.

  A second embodiment of the present invention will be described with reference to FIG. In the first embodiment, a protrusion is provided as the positioning portion 50, and a concave portion 59 into which a pin is fitted is provided as the positioning receiving portion 56. In this case, the mounting portion 17 also serves as the positioning portion 50, and the guide 60 is projected from the mounting receiving portion 58 as the positioning receiving portion 56, thereby forming a recess 59 on the upper surface of the mounting receiving portion 58. The positioning portion 50 is fitted and positioned in the recess 59 earlier than the blade terminal 36 is inserted into the receiving portion 41, and when the blade terminal 36 is inserted into the receiving portion 41, the attachment portion 17 is attached to the attachment receiving portion 58. Since the mounting screw can be tightened to the screw hole of the mounting receiving portion 58 through the screw insertion hole 18 of the mounting portion 17 as it is, the load on the solder portion of the connector 40 can be reduced.

  As a modification of this embodiment, the positioning portion 50 may be a pin protruding from the mounting surface 3 a and the positioning receiving portion 56 may be a hole formed in the mounting plate 55.

A third embodiment of the present invention will be described with reference to FIGS. In the first embodiment, a positioning cover 62 covering the outer surface of the connector 40 from the front end and both sides of the terminal pressing piece 16 of the cover 4 is integrally suspended to form a box-shaped cover together with the terminal pressing piece 16. The connector 3 is engaged with the support wall 10 of the body 3 and the cover 62. The connector 40 becomes the positioning receiving portion 56. Thereby, before the blade-shaped terminal 36 is inserted into the receiving portion , the cover portion 62 starts to be fitted into the connector 40 and positions the power terminal block. The cover 62 can also serve as the insulating cover for the blade terminal 36 and the connector 40.

It is principal part sectional drawing of the state before attachment of the power terminal block of 1st Embodiment of this invention. It is the perspective view which looked at the power terminal block from the lower part. It is a perspective view of a power terminal block. It is a disassembled perspective view. (A) is a perspective view of a conductive plate, (b) is a plan view of a developed state of the conductive plate. 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 a perspective view of the attachment state of the power terminal block of 2nd Embodiment. It is a perspective view of 3rd Embodiment. It is the perspective view seen from the bottom. It is a partial cross section side view before insertion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Fast connection terminal 3 Body 4 Cover 17 Mounting part 24a-24d Electric wire insertion hole 25a-25d Electric wire insertion hole 36 Blade-shaped terminal 50 Positioning part 55 Mounting plate 56 Positioning receiving part 58 Mounting receiving part 59 Recessed part 62 Covering part

Claims (5)

  A terminal block to be attached to the attachment receiving portion of the mounted body having an attachment receiving portion and a plurality of positioning receiving portions, the housing having an attachment portion to be attached to the attachment receiving portion and having an electric wire insertion hole; A fast connection terminal for quickly connecting an electric wire inserted through the wire insertion hole, and a connector connected to the quick connection terminal and partially exposed from the housing and fixed to the mounted body. A blade terminal for press contact connection, and the housing includes a plurality of positioning portions that position the positioning receiving portion so that the blade terminal can be press contact connected to the connector, and the positioning portion, the positioning receiver portion, Is a terminal block set so that the positioning portion is positioned by the positioning receiving portion before the blade-shaped terminal is brought into pressure contact with the connector.   The terminal block according to claim 1, wherein the positioning receiving portion is a pin, and the positioning portion is a positioning hole into which the pin is fitted.   The terminal block according to claim 2, wherein the positioning hole also serves as a screw mounting hole of the terminal block.   The terminal block according to claim 1, wherein the positioning portion is a protrusion, and the positioning receiving portion is a recess into which the protrusion is fitted. The terminal block according to any one of claims 1 to 4, wherein the quick-connect terminal and the blade-shaped terminal are integrally formed on a single conductive plate in a substantially linear shape .

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