JP3044072U - Lead wire connection terminal device - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To connect and fix a lead wire reliably and easily by a simple operation without using tools in connection of the lead wire. A lead wire holding portion is provided inside a case.
And the rotation pressing member 17 are provided, and the rotation pressing member 1 is inserted with the terminal portion 1a of the lead wire 1 inserted in the lead wire holding portion 15.
By rotating 7 to press the terminal portion 1a of the lead wire 1, the lead wire 1 is connected and fixed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a lead wire connection terminal device used for connecting lead wires, branching, relaying, and the like.

[0002]

[Prior art]

 Conventionally, a lead wire connecting terminal used for connecting lead wires, branching, relaying, etc. has a structure as shown in FIGS.

FIG. 1 shows a fixing structure using screws. (A) is a method of tying and fixing the terminal portion 1a of the lead wire 1 to the screw 3 screwed to the terminal block 2, and (B) is the same as the pressing method. The method of fixing via the metal fitting 4 is a method of inserting the terminal portion 1a of the lead wire 1 into the frame-shaped terminal block 2 and fixing with the screw 3 via the pressing plate 5.

FIG. 2 shows a fixing structure using a spring. (A) is a method of fixing the terminal portion 1 a of the lead wire 1 to the terminal block 2 by the elastic force of a spring plate 6 fixed inside the terminal block 2, ( B) is a method of fixing the terminal portion 1a of the lead wire 1 to the terminal block 2 by the elastic force of the compression coil spring 7 using the fixing member 8 incorporating the compression coil spring 7.

[0005]

[Problems to be solved by the device]

 In the conventional structure as described above, in the case of fixing with a screw, a driver matching the size of the screw is required, and there is a problem that flexibility at the work site is lacking. Further, in the case of fixing with a spring, there is a problem that the size and type of the lead wire are limited because the fixing force, that is, the force withstanding pulling differs depending on the size and type of the lead wire (single wire, stranded wire), etc. . The present invention has been made in view of these problems, and it does not require a fixing tool, and can easily connect and fix various lead wires without being affected by the size and type of the lead wires. An object of the present invention is to provide a connection terminal device that can be used.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a case, a lead wire holding portion provided inside the case, into which a terminal portion of a lead wire is inserted, and rotatably provided inside the case. A rotary pressing member that presses the terminal portion of the lead wire that is partially inserted into the lead wire holding portion; and the lead wire is moved by rotating the rotational pressing member to press the terminal portion of the lead wire. The present invention provides a connection terminal device having a structure for connection and fixing.

[0007]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 3 to 5 show a first embodiment of the present invention.

In the figure, 10 is a connecting terminal device according to the present invention as a whole, 11 is a case (housing), 12 is a lid, and the lid 12 is fixed to a case 11 by a screw 13. . The case 11 and the lid 12 are made of an insulating material and are formed in a rectangular casing type as a whole.

Two lead wire insertion holes 14a and 14b are provided in parallel on the right side of the case 11, and the bottom surface 11b of the inside 11a of the case 11 corresponds to the lead wire insertion holes 14a and 14b. A holding spring plate 15 is fixed as a lead wire holding portion.

The holding spring plate 15 is formed of a conductive metal plate into a hairpin-shaped bent shape, and the open end thereof is arranged so as to correspond to the lead wire insertion holes 14a and 14b. Further, the open end of the holding spring plate 15 is formed in a vertically widened shape so that the lead wire can be easily inserted.

Further, in the inside 11 a of the case 11, a rotation pressing member 17 is rotatably attached to a shaft column 16 protrudingly provided in the center thereof. A stopper washer 18 is fitted to the tip end of the shaft 16 to prevent the rotary pressing member 17 from falling off.

The lower end surface of the rotating pressing member 17 has a curved right-side pressing surface portion 19 that presses the holding spring plate 15 at its right half portion, and a left side half portion is a slip-off surface portion that escapes from the holding spring plate 15. It is 20. Further, a cut portion 21 is formed in the lower portion of the rotation pressing member 17 in the vicinity of the pressing surface portion 19.

Further, an operating portion 22 is projectingly provided on the upper end portion of the rotary pressing member 17, and the operating portion 22 projects to the outside from an opening hole 23 formed in the upper surface of the case 11. The tip surface of the operating portion 22 is formed with serrated wave teeth 22a so that it can be easily operated with a fingertip.

A concave groove 24 is formed in the horizontal direction in the upper part of the case 11, and a slide plate 25 for closing the opening hole 23 is slidably provided in the concave groove 24.

The slide plate 25 is a dustproof member for preventing dust and the like from entering the inside 11 a of the case 11 through the opening hole 23, and is rotated and pressed through the hole 25 a formed in the center thereof. The operating portion 22 of the member 17 is projected from the opening hole 23, and the slide plate 25 is slid along with the operation of the operating portion 22.

Fixing holes 26 are provided at four corners of the case 11, and the lid 12 is fixed by the screws 13 in the fixing holes 26. The fixing hole 26 is formed so as to penetrate the case 11, and the fixing hole 26 is also used when connecting a plurality of connection terminal devices as described later.

Next, a lead wire connecting operation by the connecting terminal device 10 of the present example configured as described above will be described.

First, when the operation portion 22 of the rotation pressing member 17 is tilted to the left as shown in FIG. 5 (A), the skid surface 20 of the rotation pressing member 17 serves as the upper surface of the holding spring plate 15. Correspondingly, since the rotation pressing member 17 does not press the holding spring plate 15 in this state, the terminal portion 1a of the lead wire 1 can be freely inserted into the holding spring plate 15 through the lead wire insertion holes 14a and 14b. It can be pulled out again.

Then, the terminal portion 1a of the lead wire 1 is inserted into the holding spring plate 15 through the lead wire insertion holes 14a and 14b, respectively, and in this state, the rotation pressing member 17 is rotated so as to tilt the operation portion 22 to the right. When operated, the pressing surface portion 19 of the rotary pressing member 17 presses the upper surface portion of the holding spring plate 15 as shown in FIG. The lead wire 1 is deformed so as to be sandwiched, and thus the terminal portion 1 a of the lead wire 1 is securely connected and fixed so as not to come off from the holding spring plate 15.

Further, in the fixing operation of the lead wire, the notch 21 is provided in the vicinity of the pressing surface portion 19 of the rotation pressing member 17, so that the size (thickness) and type of the lead wire 1 can be adjusted. Accordingly, the peripheral portion of the pressing surface portion 19 of the rotary pressing member 17 is deformed, so that a uniform pressing force can always be applied regardless of the size and type of the lead wire 1, so that stable lead wire connection and fixation can be achieved. The state is secured.

It should be noted that the lead wire connection and fixing effect can be sufficiently obtained without providing the notch portion 21, and therefore, the configuration without the notch portion 21 is also included in the embodiment of the present invention.

FIG. 6 shows an example of the shape of the holding spring plate 15. In FIG. 6A, the inner surface of the holding spring plate 15 is smooth, and in FIG. 6B, the serrated wave teeth 27 are formed above the inner surface of the holding spring plate 15. 6C is an example of a case where serrated wave teeth 27 are formed on the upper and lower sides of the inner surface of the holding spring plate 15. In these examples, a sufficient lead wire connection and fixing effect can be obtained even in the case of (A), but the lead wires can be more securely and firmly connected and fixed by the cases of (B) and (C). You can

FIG. 7 shows a modification of the first embodiment, which has a structure in which lead wires are inserted from both left and right sides to be connected. That is, in the connection terminal device 10 of this example, one lead wire insertion hole 14a is provided on the left side of the case 11, and the other lead wire insertion hole 14b is provided on the right side of the case 11. The terminal portions 1a of the lead wires 1 are inserted into the lead wire insertion holes 14a and 14b from the left and right sides, respectively, and connected and fixed.

In this case, the holding spring plate 15 is divided into an upper spring plate 15a and a lower spring plate 15b so that the terminal portion 1a of the lead wire 1 can be inserted from the left and right sides, and the upper spring plate 15a and the lower spring plate 15a are separated from each other. The terminal portion 1a of the lead wire 1 is connected and fixed in a state of being sandwiched between the side spring plate 15b.

FIG. 8 is a development example of the first embodiment, and is a case of a multi-pole type device in which a plurality of connection terminal devices 10 are connected and used. In this example, a long screw that can connect a plurality of connection terminal devices 10 is used as the screw 13. The screw 13 is passed through the fixing hole 26 of the case 11 of each connection terminal device 10 to connect and fix each connection terminal device 10. To do so.

In the multipolar device in which a plurality of connection terminal devices 10 are connected and used in this way, as shown in FIG. 9, the operating portions 22 of the connection terminal devices 10 are integrally connected by a connecting plate 28. Alternatively, the operation portion 28a of the connecting plate 28 may be collectively operable.

10 to 12 show a second embodiment of the present invention. In the figure, reference numeral 30 indicates the connection terminal device according to the present invention as a whole, and reference numeral 31 indicates its case. The case 31 is made of an insulating material and has a hollow cylindrical shape. On the inner peripheral surface of the case 31, a holding groove 32 having an R-shaped cross section as a lead wire holding portion is provided in the axial direction of the case 31.

Inside the case 31, a hollow cylindrical rotary pressing member 33 is rotatably housed. The rotation pressing member 33 is made of a conductive metal and is rotatably housed in the case 31 with almost no gap between the inner surface and the inner peripheral surface of the case 31.

Split grooves 34a, 34b are formed in the front and rear portions of the rotary pressing member 33 in the circumferential direction, and a portion of the rotary pressing member 33 in front of the split groove 34a (hereinafter referred to as front portion) 33a is formed. A peripheral surface of the peripheral surface and a portion (hereinafter referred to as a rear portion) 33b behind the split groove 34b serves as a pressing surface portion 35 for pressing the lead wire, and a part of the peripheral surface of the front portion 33a and the rear portion 33b has a skid-off surface portion. 36 is formed. Further, the front portion 33a and the rear portion 33b are each formed with a notch portion 37 which is formed by cutting out a part thereof in a split groove shape.

An operation member 38 is attached to the center of the rotation pressing member 33. In this example, a fixing hole 39 is provided in the center of the rotary pressing member 33, and the leg portion 38b of the operating member 38 is fitted and fixed in the fixing hole 39. The operating member 38 projects outward from an opening hole 40 formed in the center of the case 31, and a serrated wave tooth 38a is formed on the tip end surface of the operating member 38 for easy operation with a fingertip. ing.

Further, disc-shaped lids 41 and 42 are fitted and fixed in the front and rear openings of the case 31, respectively, so as to prevent dust and the like from entering from the outside as much as possible. Each of the lids 41 and 42 is provided with a groove portion 43 having an R-shaped cross section corresponding to the holding groove 32 of the case 31, and the groove portion 43 and the holding groove 32 form a lead wire insertion hole. It

Next, a lead wire connecting operation by the connecting terminal device 30 of the present example configured as described above will be described.

First, as shown in FIG. 12A, when the operation member 38 of the rotation pressing member 33 is tilted to the left, the skid surface 36 of the rotation pressing member 33 corresponds to the holding groove 32. In this state, the terminal portion 1a of the lead wire 1 can be freely inserted into and pulled out from the lead wire insertion hole into the holding groove 32.

When the rotation pressing member 33 is rotated to tilt the operation member 38 to the right with the terminal portion 1a of the lead wire 1 inserted in the holding groove 32, the rotation pressing member 33 is rotated as shown in FIG. The pressing surface portion 35 on the peripheral surface of the pressing member 33 presses the terminal portion 1a of the lead wire 1 so as to sandwich the terminal surface 1a of the lead wire 1 with the holding groove 32, so that the terminal portion 1a of the lead wire 1 does not come off from the holding groove 32. Securely connected to.

Further, in the fixing operation of the lead wire, since the rotation pressing member 33 is provided with the notch 37, the rotation pressing member 33 is deformed according to the size and type of the lead wire 1, Therefore, a uniform pressing force can always be applied regardless of the size or type of the lead wire 1, so that a stable lead wire connection / fixation state is secured.

A sufficient effect of connecting and fixing the lead wire can be obtained without providing the cut portion 37. Therefore, a configuration without the cut portion 37 is also included in the embodiment of the present invention.

The connection terminal device 30 of the present embodiment as described above can be miniaturized due to its cylindrical shape, and can be effectively used as a relay terminal for a particularly long lead wire.

In the connection terminal device 30 of this example, the spring plate as in the first embodiment described above is interposed between the case 31 and the rotation pressing member 33, and the terminal end of the lead wire is connected to this spring plate. It is also possible to have a structure in which the terminal end of the lead wire is indirectly connected and fixed by pressing the spring plate with the rotation pressing member 33 in a state in which is inserted.

[0039]

[Effect of the invention]

 As is clear from the above description, the connection terminal device of the present invention does not require any fixing tools and is not affected by the size or type of the lead wire, and can be operated easily and reliably and easily. Various lead wires can be connected and fixed in a stable state.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a connection example of a conventional lead wire.

FIG. 2 is an explanatory diagram of another example of the same.

FIG. 3 is a perspective view showing a first embodiment of a connection terminal device according to the present invention.

FIG. 4 is an exploded perspective view of the main part of the same.

FIG. 5 is a front view for explaining a lead wire connecting and fixing operation, in which (A) is a state before fixing the lead wire and (B) is a state after fixing.

FIG. 6 is an example of the shape of a holding spring plate.

FIG. 7 is a modification of the first embodiment.

FIG. 8 is a development example of the first embodiment.

FIG. 9 is a further developed example.

FIG. 10 is a perspective view showing a second embodiment of the connection terminal device according to the present invention.

FIG. 11 is an exploded perspective view of the same.

FIG. 12 is a front view for explaining the connection fixing operation of the lead wire, in which (A) is a state before fixing the lead wire and (B) is a state after fixing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 lead wire 1a terminal part 10 connection terminal device 11 case 15 holding spring plate (lead wire holding part) 17 rotation pressing member 21 notch part 30 connection terminal device 31 case 32 holding groove (lead wire holding part) 33 rotation pressing member 37 Notch

Claims (2)

[Utility model registration claims] 1. A case, a lead wire holding portion which is provided inside the case and into which a terminal portion of a lead wire is inserted, and rotatably provided inside the case, and a portion of which holds the lead wire. A rotary pressing member that presses the terminal portion of the lead wire inserted into the portion, and the lead wire is connected by rotating the rotary pressing member to press the terminal portion of the lead wire. A lead wire connecting terminal device having a fixed structure. 2. The lead wire connection terminal device according to claim 1, wherein the rotary pressing member is formed with a notch for making the pressing force uniform.