JPS6320062Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a terminal for connecting a terminal block, which connects each electric wire as an end treatment of electric wires, to a mounting rail having locking protrusions projecting on both sides of the upper end. This invention relates to a connecting device for a stand.

Conventionally, this type of terminal block connection device, as shown in FIG. When the terminal block a is pressed from above the mounting rail e by applying the outside of the spring c to the support piece d fixed to the main body, the locking pawl b comes into contact with the locking protrusion f and the spring c With a configuration in which the locking protrusions f, f are fitted into the locking claws b, b' so as to move backward against the force, one of the locking claws can be moved in the left-right direction. I try to do that. However, with such a configuration, the device becomes complicated and requires multiple steps for molding.
There are disadvantages such as the product being expensive.

In order to eliminate the above-mentioned drawbacks, the present invention aims to provide a connecting device for a terminal block having a simple structure. A pair of left and right locking pawls each having a retaining groove formed on the inner surface thereof are vertically provided, one side of the front and rear of the left and right retaining grooves is a wide mouth into which a pair of locking protrusions is loosely fitted, and the other side is a wide opening into which a pair of locking protrusions are loosely fitted. In addition to forming a narrow opening into which the pair of locking protrusions fit almost tightly, an inclined surface that slopes in the longitudinal direction of the rail is formed at the bottom between the pair of locking claws, and the lower end of the slope is formed at the upper end of the wide opening of the holding groove. and a loose fitting groove is provided on the inner surface of the pair of locking claws, in which a locking protrusion is loosely fitted in the width direction to the pair of locking claws at a position approximately at the same height as the sloped upper end of the inclined surface. A connecting device for the terminal block is constructed by forming the respective terminal blocks and further forming a moderation ridge between the loose fitting groove and the retaining groove, and the connection is performed according to the following procedure.

(b) Fit the pair of locking protrusions of the mounting rail into the wide mouth of the holding groove and the loose fitting groove so that the inclined surface contacts the top surface of the mounting rail, and mount the terminal block tilting back and forth with respect to the mounting rail.

(b) Raise the terminal block at right angles to the mounting rail. As a result, the locking protrusion that had been fitted into the loose fitting groove passes over the moderation ridge and enters the narrow opening side of the holding groove, so that the locking protrusion is completely accommodated within the holding groove.

Therefore, since the width between the narrow openings substantially matches the width of the pair of locking protrusions, the locking protrusions are held by the locking pawls so that they cannot move in the width direction. Further, the upper surface of the rail is supported at two points by the moderation crest and the lower end of the slope, thereby preventing wobbling in the vertical direction and the slope direction.

An embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 2, reference numeral 1 denotes a terminal block, which is formed into a plate shape from an insulating resin material such as polycarbonate, and has a bottom plate 3 on one side of the back plate 2, and supports extending upward from both ends of the bottom plate 3. A thick wall portion 6 such as a partition wall 5 separating the left and right portions 4 and 4 is integrally formed, and a fitting hole 7 is formed at both lower ends of the thick wall portion 6 and at the top of the partition wall 5. At the same position, a fitting protrusion 8 (see FIG. 3) that can be fitted into the fitting hole 7 is formed from the back surface of the back plate 2. A conductive plate 9 is mounted on the upper ends of the support parts 4, 4 in the left-right direction across the partition wall 5, and clamping terminals are provided on the left and right upper surfaces of the conductive plate 9 to sandwich crimp terminals fixed to the ends of the conductive wires 12, respectively. Attach pieces 10, 10 and screws 11, 11, respectively. As a result, the conductive wire 12, which is sandwiched between the conductive plate 9 and the clamping pieces 10, 10 by the screws 11, 11, on the left and right sides of the terminal block 1,
12 are electrically connected by the conductive plate 9.

On both left and right sides of the lower surface of the bottom plate 3 of the terminal block 1, as shown in FIG. Retaining claws 20, 20 are provided vertically, respectively. The retaining grooves 21, 21 have one side on the front and rear sides thereof connected to the pair of locking protrusions 3 between the retaining grooves 21, 21.
Wide openings 21a, 21a into which 1 and 31 fit loosely
(range of height h in Fig. 4). Further, on the other side, a wall 22 protrudes from the inner surface of the retaining groove 21, and a narrow space is formed on the inner surface so that the distance between the inner surfaces is almost the same as the distance between the pair of locking protrusions 31, 31 so that the pair of locking protrusions 31, 31 are almost tightly fitted. Width openings 21b, 21b are formed. Further, between the locking claws 20, 20, inclined plates 23, 23 are vertically provided, each having an inclined surface 24 inclined in the front-rear direction from the bottom plate 3. The inclined surface 24 has narrow openings 21b, 2
It slopes downward from the wide opening 1b side to the wide opening 21a, 21a side, and the height of the lower end of the slope is set as the wide opening 21a, 2.
almost coincide with the upper end position of the height h of 1a (the fourth
(See the dashed line in the figure). Further, at a height position equal to the upper end of the inclined surface 24, the inner surfaces of the locking pawls 20, 20 have a clearance equal to the width of the wide openings 21a, which are wider than the distance between the pair of locking protrusions 31, 31. Fitting groove 25,
25 respectively. Further, the wall 22 has narrow openings 21b, 21b directly above the narrow openings 21b, 21b.
Moderation mountain 26 protruding slightly inward from the inner edge of b
form. The moderation ridge 26 and the loose fitting grooves 25, 25 are connected by an inclined guide 27.

The attachment and fixation of this embodiment to the attachment rail 30 will be explained.

As shown in FIG. 5, one of the locking protrusions 31 is
By tilting the terminal block 1 back and forth, one loose fitting groove 25 is inserted.
and the wide opening 21a, and then drop the other locking pawl 20 onto the other pair of locking protrusions 31 as shown by the arrow in FIG. At this time, the other locking protrusion 3
1 has wide openings 21a, 21a and a loose fitting groove 2.
5 and 25 are wide, so they do not collide with the locking pawl 20, or when they hit the inclined guide 20a formed at the inner end of the locking pawl 20, the mounting rail is bent inward or the locking pawl The deflection of 20 allows its inward passage and enables the dropping operation described above. As a result of this dropping, as shown in FIG.
Fitted into the loose fitting grooves 25, 25, the upper surface of the mounting rail 30 comes into close contact with the inclined surface 24, and the terminal block 1 is mounted with an inclination in the front-rear direction relative to the mounting rail 30.

This terminal block 1 is raised to a right-angled standing position as shown in FIG. By this operation, the pair of locking protrusions 31, 31 that had been fitted into the loose fitting grooves 25, 25 are moved to the inclined guide 2.
7 as a guide, it slides over the moderation ridge 26 and fits into the narrow openings 21b, 21b of the holding groove 21, so that the pair of locking protrusions 31, 31 are completely accommodated in the holding groove 21.

In this state, the width between the narrow openings 21b, 21b almost matches the width of the pair of locking protrusions 31, 31, so the pair of locking protrusions 31, 31 cannot be moved in the width direction by the locking claws 20, 20. (See Figure 2).
Further, since the upper surface of the pair of locking protrusions 31, 31 is supported by the two points of the moderation ridge 26 and the lower end of the inclined plates 23, 23, and the lower surface is supported by the locking claws of the locking claws 20, 20, the terminal This prevents the table 1 from wobbling in the vertical direction and in the longitudinal direction (see FIG. 7).

Through this operation, the terminal block 1 attached to the mounting rail 30 becomes able to slide in the front and back direction of the mounting rail 30, and the fitting protrusion 8 of each terminal block 1 is fitted into the fitting hole 7, so that a large number of terminal blocks can be assembled. 1 is made into a unit (see Figure 3).

In the embodiment described above, the inclined surface 24 is connected to the locking claw 2.
0 and 20, and without providing the wall 22, the wide openings 21a, 21a and the narrow openings 21b, 21
b may be continuous in the front-rear direction by front and rear inclined surfaces.

Since the present invention has the structure clarified by the above explanation, the locking protrusion 31 of the mounting rail 30,
31 into the wide openings 21a, 21a of the holding grooves and the loose fitting grooves 25, 25, and the inclined surface 24 of the terminal 1.
By contacting the upper surface of the mounting rail 30 and installing it in an inclined manner with respect to the mounting rail, and then raising it at right angles, the locking ridges 31, 31 that had been fitted into the loose fitting grooves 25, 25 are moved to the moderation ridges 26. The locking protrusions 31, 31 enter the narrow openings 21b, 21b side of the holding grooves 21, 21, and the locking protrusions 31, 31 enter the holding grooves 21, 21.
Because it is completely housed inside and stably held without any play in the horizontal, vertical, etc., it is extremely easy to install and fix.The structure is simple, and there is no need to attach any springs, etc., and the connecting device can be installed only by molding. It has excellent effects such as being able to be manufactured.

[Brief explanation of the drawing]

Figure 1 is a front view of the main parts of an example of a conventional device;
Figures 2 to 7 show an embodiment of the present invention, with Figure 2 being a front view of the terminal block 1, Figure 3 being a plan view of the terminal block unit, Figure 4 being a perspective view of the main parts, and Figure 5. Figure 6 is a perspective view of the main parts showing the installation process, and Figure 6 is a longitudinal side view of the same.
FIG. 7 is a vertical sectional side view of the main part in the installed state. 1; Terminal block, 20; Locking claw, 21; Holding groove, 2
1a; wide mouth, 21b; narrow mouth, 24; sloped surface,
25; Free fitting groove; 26; Moderate ridge; 30; Mounting rail; 31; Locking ridge.

Claims (1)

[Scope of utility model registration request] A terminal block connected to a mounting rail having a pair of locking protrusions protruding from both sides of its upper end has a retaining groove on its inner surface that engages the protrusions from both sides and holds the terminal in an upright position at the bottom thereof. A pair of left and right locking pawls are formed vertically, one side of the front and rear of the left and right holding grooves is a wide opening into which a pair of locking protrusions is loosely fitted, and the other side is a wide opening into which a pair of locking protrusions is fitted almost tightly. In addition, an inclined surface inclined in the longitudinal direction of the rail is formed at the bottom between the pair of locking claws so that the lower end of the inclined surface is substantially aligned with the upper end position of the wide opening of the holding groove; A loose fitting groove is formed on the inner surface of each pair of locking pawls, in which the locking protrusion is loosely fitted in the width direction at a position approximately at the same height as the upper end of the slope of the slope, and there is also a moderation between the loose fitting groove and the holding groove. A terminal block connecting device characterized by a protruding mountain.