JP3038624U - Terminal block fixture and terminal block - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a terminal block fixing tool that suppresses the time and effort required for mounting and fixing to a terminal block fixing rail and eliminates waste of the mounting space. [Structure] In order to hold down the side surface of the terminal block on the terminal block fixed rail 200, a pair of bending support members 11a for supporting the pair of protruding crimping pieces 201, 201 on both side surfaces of the rail 200 so as to hold them from below, Fixing metal fitting body 10 formed so that the terminal block fixing rail 200 can be inserted obliquely downward from the rail insertion grooves 12a and 12b formed by 11b, and protruding crimping pieces 201 and 20.
The terminal block fixing tool 1 provided with at least one pressing plate 20, the terminal block 50 provided therein, and the protective cases 70a and 70b thereof.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention provides a terminal block fixing tool for fixing and fixing the terminal block from both ends of the terminal block fixing rail for mounting on a switchboard, and a terminal block having a configuration substantially similar to the terminal block fixing tool. Regarding

[0002]

[Prior art]

 A large number of terminal blocks are usually used as relay terminals in distribution boards, etc., where there are many places for electrical wiring.The terminal rails should be connected in parallel to the fixed terminal block rails attached to the distribution boards. By fixing the terminal blocks that touch both ends with the terminal block fixtures, we are working to reduce the time and effort required when mounting multiple terminal blocks to a switchboard.

Both FIG. 8 and FIG. 9 are front views showing a state in which a terminal block according to a conventional technique is fixedly mounted on a fixed rail for the terminal block.

In the former terminal block 80 shown in FIG. 8, a pair of protruding crimping pieces 201, 201 on both side surfaces of the terminal block fixing rail 200 are inserted into both lower ends of a resin-molded terminal block body 81. A pair of engaging members 82a, 82b are provided at the lower ends of both sides, and screws 84a, 84b and a lower sandwiching plate 86a are provided in openings 83a, 83b formed downward from the upper end of the terminal block body 81. 86b, upper sandwiching plates 85a and 85b, and springs 87a and 87b for pulling the upper sandwiching plates 85a and 85b upward are assembled.

The terminal block 80 configured as described above is inserted into the terminal block fixing rail 200 and a plurality of terminal blocks are connected to each other, and stoppers (not shown) for the terminal blocks are provided from both ends of the terminal block group. The terminal rails are supported by the fixed rails 200 so that they are held and abutted on both sides of the terminal block group, and the stoppers are screwed to the fixed rails 200 for the terminal block so that a series of terminal block groups are mounted on the fixed rails 200 for the terminal block. Attached to.

On the other hand, the latter terminal block 90 shown in FIG. 9 is a bending support member 91 that supports a pair of protruding crimping pieces 201, 201 on both sides of the terminal block fixing rail 200 so as to hold them from below. The leg portions 92 are assembled so as to overlap with each other, and the leg portions 92 are assembled upward, and the upper ends of the leg portions 92 are screwed with screws 93a and 93b for fixing the ends of the electric wires. It is fixed by screws 96 through the plate 95. By screwing the screw 96 downward, the protruding crimping pieces 201, 201 are sandwiched by the pair of sandwiching portions 91a, 91b of the bending support member 91 and the left and right lower end portions 92a, 92b of the leg portions 92. It is configured to be fixed, and all of them are protected by a split resin cover 70 for preventing a short circuit of current.

[0007]

[Problems to be solved by the device]

 However, in the former terminal block 80 of the above-mentioned conventional examples, when the terminal block 80 is attached to the terminal block fixed rail 200, the terminal block 80 is attached from one end side in the longitudinal direction of the terminal block fixed rail 200. It is necessary to slide the terminal block 80 to the specified position, and since both ends of the terminal block 80 are fixed by the stoppers and fixed on the terminal block fixing rail 200, it takes a lot of time to attach and detach the terminal block 80. In particular, when a plurality of terminal blocks 80 are continuously mounted on the fixed rail 200 for the terminal block and one of the terminal blocks 80 is to be pulled out for inspection adjustment, replacement, etc., they are adjacent to each other. It is necessary to pull out the stopper on one side and the terminal block 80, but this work is troublesome and time-consuming.

On the other hand, in the latter terminal block 90 of the above-mentioned conventional techniques, unlike the former terminal block 80, each terminal block 90 is independently attached to the terminal block fixing rail 200 without requiring a stopper. Although there is an advantage that it can be attached, the structure is complicated, and especially when attaching the terminal block 90 to the terminal block fixed rail 200, the terminal block 90 is unstable on the terminal block fixed rail 200 until screwed. It is difficult to install because it is in a bad state. Moreover, since the terminal block 90 is provided with the leg portions 92, the entire terminal block 90 becomes large in size, and particularly bulky.

The present invention has been made in view of the above circumstances, and provides a terminal block fixing tool that reduces the labor and time required for mounting and fixing to a terminal block fixing rail and eliminates waste of the mounting space. With the goal.

[0010]

[Means for Solving the Problems]

 The terminal block fixing device according to the first aspect of the present invention is for holding a terminal block on a terminal block fixing rail, and a pair of protruding crimping pieces on both side surfaces of the terminal block fixing rail. A pair of bending support members that support the terminal from below are provided at both lower ends, and the fixed rail for the terminal block is slanted downward from the rail insertion groove that is a space formed by the pair of bending support members. To insert, there is a fixing metal fitting body having a cut groove formed on the insertion side edge portion of the rail inserting groove to allow the protruding crimping piece on the insertion side to escape and play, and an elastic plate provided on the lower surface side of the fixing metal fitting body. A pressing plate that presses the upper surface of the protruding crimping piece in a state where the terminal block fixing rail is inserted into the rail insertion groove, and a tip portion that is screwed into the upper plate portion of the fixing metal fitting body. Is the upper surface of the holding plate It is characterized by comprising at least a screw which comes into contact with the central portion and presses the pressing plate downward.

In addition, the terminal block fixture according to the second configuration is characterized in that the lower end portion of the space is formed into an inclined surface that slopes up toward both sides of the fixed metal fitting body.

In the terminal block fixing device according to the third configuration, the rail insertion groove is formed by dividing the rail insertion groove into left and right positions corresponding to the shapes of the left and right protruding crimping pieces of the terminal block fixing rail. A locking piece for preventing the pressing plate from escaping downward is formed at the inner lower end of the rail insertion groove, and a protrusion corresponding to the locking piece is formed on the pressing plate. .

Further, the terminal block fixture according to the fourth configuration is characterized in that the pressing plate is bent downward from the center to both ends.

Further, in the terminal block fixing device according to the fifth configuration, a screw for pressing the pressing plate downward is screwed onto the upper plate part of the fixing device body, and the upper plate part and the pressing plate are combined. A spring for pushing down the holding plate downward is provided around the screw in between.

In addition, the terminal block according to the sixth structure is supported by screws that are screwed to the left and right positions of the fixing plate located on the upper surface of each of the fixture bodies, and the screws to hold the end of the electric wire. It is characterized by comprising two upper and lower clamp plates, and a spring provided above the upper clamp plate and urging the clamp plates upward.

Further, the terminal block according to the seventh configuration has a pedestal locked to the left and right positions of the fixing plate located on the upper surface of the terminal block fixture, and the pedestal screwed to the pedestal to fix the terminal block to the terminal block fixture. It is characterized by comprising a screw fixed to the upper surface.

Further, the terminal block fixture according to the eighth configuration is characterized in that each member is sandwiched and held by a protective case made of resin that is split in two.

[0018]

[Action]

 When inserting the fixed rail for the terminal block into the rail insertion groove of the terminal block fixture diagonally from below, the presser plate that is pressed by the spring to the position below the rail insertion groove is on the insertion side. Pushed up by the protruding crimping piece, and then inserting one protruding crimping piece to the end of the cut groove beside the rail insertion groove, the other protruding crimping piece is easily caught without being caught by the rail inserting groove on the opposite side. Can be inserted into.

In the protruding crimping piece after insertion, the lower end portion of the kerf is formed as a slope, and both ends of the protruding crimping piece are urged downward by the elastic force of the pressing plate. Slide down from the slope to the top edge of the rail insertion groove, and move to a stable position in the rail insertion groove.

In this state, both ends of the protruding crimping piece are urged downward by the elastic force of the pressing plate to be received by both lower end portions of the rail insertion groove, and in this state, the terminal block fixing tool is The installation position can be easily adjusted.

Next, when the screwdriver that operates the driver to press the pressing plate downward is advanced, the tip of the screw presses the pressing plate downward, and the terminal block fixing tool for the terminal block is pressed. It can be firmly fixed on the fixed rail.

It should be noted that the terminal block fixing device main body may be attached to the terminal block fixing rail in this manner, and the electric wire end may be connected to the connection terminal above the terminal block fixing device main body. If the base is exposed, there is a risk of a short circuit during the operation of connecting the electric wire ends, and there is a risk of a short circuit due to a bad contact with another terminal block fixture that is mounted adjacently on the fixed rail for the terminal block. And so on. In order to prevent such a situation, the terminal block fixing tool and the terminal block are sandwiched between two pieces of protective case made of resin and are insulated and protected.

[0023]

【Example】

 Hereinafter, embodiments of the terminal block fixture and the terminal block attached thereto according to the present invention will be described in detail with reference to the drawings. 1A is a front view showing a state where the terminal block fixing tool is attached and fixed to a terminal block fixing rail, FIG. 1B is a side view of the same, and FIG. 2A is a plan view of the terminal block fixing tool. 3B is a side view, FIG. 3C is the same front view, FIG. 3A is a plan view of the fixing bracket body, FIG. 3B is a side view, and FIG. 3C is the same front view. FIG. 4 is a front view showing a method of attaching the terminal block fixing tool to the terminal block fixing rail, and FIG. 5 (a) is a terminal block fixing tool having a terminal block attached to the terminal block fixing rail. 7B is a front view showing the state in which the front of the protective case is opened, FIG. 6B is a side view of the same, FIG. 6 is a front view of the state inside the protective case, and FIG. The terminal block fixing tool equipped with is attached and fixed to the terminal block fixing rail with the front of the protective case opened. It is a front view showing.

The terminal block fixing device and the terminal block provided therein according to the present invention are set to one or more on the terminal block fixing rails attached to the switchboard panel to serve as connection terminals at the electric wire ends. It is a thing.

As shown in each of FIGS. 1 to 3, the fixing metal fitting main body 10 that constitutes a main member of the terminal block fixing tool 1 includes a pair of protruding crimps on both side surfaces of a terminal block fixing rail 200 described later. A pair of bending support members 11a, 11b for supporting the pieces 201, 201 from below are provided at the lower ends of both sides thereof, and the pair of bending support members 11a, 11b form rail insertion grooves 12a, 12b. ing. In order to insert the terminal block fixing rail 200 into the rail insertion grooves 12a and 12b from the lower side, the insertion-side protruding crimp pieces 201 play in the insertion-side edge portions 13a and 13b of the rail insertion grooves 12a and 12b. The plate surface in which the escape spaces 14a and 14b are formed is bent from the upper plate portion 15 downward to the long side of the fixed rail 200 for the terminal block at a right angle, and is formed back and forth.

The rail insertion grooves 12 a and 12 b are formed so as to be divided into right and left so as to correspond to the shapes of the left and right protruding crimping pieces 201 and 201 of the terminal block fixed rail 200.

On the lower surface side of the upper plate portion 15 of the fixing metal fitting body 10 thus formed, the pressing plate 20 made of an elastic plate having a length substantially equal to the lateral width of the fixing metal fitting body 10 is located. As shown in FIG. 2C, the holding plate 20 has a so-called bow shape that is bent downward from the center to both ends. In addition, in order to prevent the pressing plate 20 from coming off from the lower side of the fixing metal fitting body 10 and escaping downward, locking pieces 15a and 15b are formed at the inner ends of the rail insertion grooves 12a and 12b. Protrusions 20a and 20b which hang on the locking pieces 15a and 15b are formed at corresponding positions of the holding plate 20.

The lower ends of the spaces 14a and 14b are formed with slopes 16a and 16b that gradually rise toward both sides to facilitate the insertion of the protruding crimping pieces 201 and 201, and The protruding crimping pieces 201, 201 are adapted to be stably hung on the edge portions 13a, 13b of the rail insertion grooves 12a, 12b.

As described above, the fixing plate 30 of the terminal base is screwed from above by the screw 40 at the center of the upper plate portion 15 of the fixing metal fitting body 10 having the pressing plate 20. The tip portion 40a of the screw 40 projects downward from the upper plate portion 15 of the fixture main body 10 and extends around the screw 40 and extends from the lower surface of the upper plate portion 15 to the holding plate 20. Is provided with a spring 49 that presses the pressing plate 20 downward.

In the state before the terminal block fixing tool 1 is attached to the terminal block fixing rail 200, the central portion of the holding plate 20 is slightly pushed down by the urging force of the spring 49. Moreover, both ends of the holding plate 20 are located on the upper surfaces of the edge portions 13a and 13b of the rail insertion grooves 12a and 12b.

As shown in FIG. 4, in order to attach the terminal block fixing tool 1 in such a state to the terminal block fixing rail 200, one of the protruding crimping pieces 201 of the terminal block fixing rail 200 is attached to the rail. The pressing plate 20 is pushed obliquely downward into the insertion groove 12b and is inserted to the side end of the space 14b. Then, the other protruding crimping piece 201 is also placed on the edge portion 13a of the rail insertion groove 12a at the corresponding position. It suffices to raise it, and in this state, the terminal block fixing tool 1 is temporarily fixed on the terminal block fixing rail 200.

Following this, when the screw 40 is screwed downward and the central portion of the pressing plate 20 is pushed down by the tip portion 40a thereof, the protruding crimping piece 201 of the terminal block fixing rail 200, 201 is fixed by being sandwiched between the edge portions 13a and 13b of the rail insertion grooves 12a and 12b and the holding plate 20. Although not shown, the terminal block fixing rail 200 is attached to a case connected to the ground in order to prevent accidents and the like caused by short circuit and retention of current. Therefore, the electric end wire (not shown) attached to the fixing plate 30 and the terminal block fixing rail 200 are completely in a conductive state, and a complete ground can be established.

As shown in FIGS. 5 and 6, the terminal block fixture 1 and the terminal block 50 having such a structure are sandwiched between resin protective cases 70a and 70b whose front and rear parts are divided into two parts. It is blocked and insulated. The protective cases 70a, 70b are formed with openings 71a, 71b, 72 for inserting the tip of a driver for screw operation, and openings 73a, 73b for inserting the ends of the electric wires to be connected. Has been done. The protective cases 70a and 70b can be easily removed by holding them with a fingertip and pulling them apart, but they are stopped so as not to be removed by a degree touched by vibration or carelessness.

The terminal block 50 includes screws 51a and 51b, two upper and lower clamping plates 52a, 52b, 53a and 53b, which are passed through and supported by the shafts of the screws 51a and 51b, and an upper clamping member. It is composed of springs 54a and 54b for pulling the plates 52a and 52b from above, and regulating members 55a and 55b at the upper ends of the springs 54a and 54b, and electric wire ends (not shown) inserted through the openings 73a and 73b. ) Is sandwiched between the upper and lower two retaining plates 52a, 52b, 53a, 53b, and the screws 51a, 51b are screwed downward to firmly tighten the two retaining plates 52a, 52b, 53a, 53b. It becomes possible by making it.

It is also possible to provide a terminal block 60 of another structure as shown in FIG. 7 in place of the terminal block 50 of the above structure. Next, the structure of this terminal block 60 will be described. The terminal block fixing tool 1 including the terminal block 60 and the protective cases 70a and 70b have the same configuration as that described above, and a description thereof will be omitted.

That is, the terminal block 60 has pedestals 61a and 61b which are substantially mouth-shaped in a side view and are locked so as to sandwich the left and right sides of the fixing plate 30, and the pedestals 61a and 61b which are screwed to the pedestals 61a and 61b. The holding plate 63a is constituted by screws 62a and 62b for holding the holding plate 61b on the left and right upper surfaces of the fixed plate 30 and holding plates 63a and 63b supported by the screws 62a and 62b and located on the fixed plate 30. , 63b and the pedestals 61a, 61b, and the electric wire ends are sandwiched, and these can be tightened by screwing the screws 62a, 62b downward.

[0037]

[Effect of the invention]

 The terminal block fixing device according to the present invention described above has the following effects.

Simply insert one protruding crimping piece of the terminal block fixing rail into the rail inserting groove of the terminal block fixing tool obliquely from below, and easily insert both protruding crimping pieces into the rail inserting groove. Therefore, the work of mounting the terminal block fixture can be performed easily and quickly.

In particular, it is not necessary to use a member such as a stopper for stopping both ends of the terminal block fixing tool as in the conventional case, and each terminal block fixing tool can be independently mounted. This is convenient because you can remove only the required terminal block fixtures when inspecting and replacing the terminal block fixtures after mounting them when they are mounted side by side on the fixed rails for terminal blocks.

Moreover, when both of the protruding crimping pieces are inserted into the rail insertion groove, both ends of the protruding crimping piece after insertion are urged downward by the elastic force of the pressing plate, so that the space in the space next to the rail inserting groove is Since it slides down from the slope to the upper edge of the edge of the rail insertion groove, the fixed rail for the terminal block can be stored in a stable position in the rail insertion groove. Further, in this state, there is an advantage that the mounting position of the terminal block fixture can be easily adjusted.

In addition, since the terminal block fixture with the terminal block attached is sandwiched between two front and rear resin protective cases for insulation protection, it is possible to prevent the risk of short circuit due to bad contact, etc. , The appearance will also be good.

More importantly, the terminal block fixing device to which the terminal block is mounted has an advantage that the mounting space can be narrowed because it is housed in a protective case and has a compact shape.

Further, according to the above-mentioned terminal block, if the terminal block fixed rail is attached to the housing connected to the ground, the complete ground can be obtained, and thus there is an effect that a short circuit or the like does not occur. .

[Brief description of the drawings]

1A is a front view showing a state in which a terminal block fixture is attached and fixed to a terminal block fixing rail, and FIG. 1B is a side view of the same.

2A is a plan view of a terminal block fixture, FIG. 2B is a side view thereof, and FIG. 2C is a front view thereof.

3 (a) is a plan view of a fixing metal fitting body, FIG. 3 (b) is a side view thereof, and FIG. 3 (c) is a front view thereof.

FIG. 4 is a front view showing a method of attaching the terminal block fixture to the terminal block fixing rail.

5A is a front view showing a state in which a terminal block fixture having a terminal block is attached and fixed to a terminal block fixing rail with a front surface of a protective case opened, and FIG. 5B is a side view of the same. is there.

FIG. 6 is a front view showing the state inside the protective case.

FIG. 7 is a front view showing a state in which a terminal block fixing tool having a terminal block of another configuration is attached and fixed to a terminal block fixing rail, with a front surface of a protective case opened.

FIG. 8 is a front view showing a state in which a terminal block fixture having a terminal block according to the related art is attached and fixed to a terminal block fixing rail, with a front surface of a protective case being opened.

FIG. 9 is a front view showing a state in which a terminal block fixing tool including a terminal block according to a conventional technique is attached and fixed to a terminal block fixing rail with a front surface of a protective case opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal block fixing tool 10 Fixing metal body 11a, 11b Bending support member 12a, 12b Rail insertion groove 13a, 13b Edge part 15 Upper plate part 15a, 15b Locking piece 20 Holding plate 20a, 20b Projection 49 Spring 50 Terminal block 70a, 70b Protective case 200 Fixed rail for terminal block 201 Protruding crimping piece

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 22, 1994

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 5

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 6

[Correction method] Change

[Correction contents]

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 8

[Correction method] Change

[Correction contents]

8. The terminal block fixture, the sandwich plate, and the front plate.
The terminal block according to claim 6 or 7 , wherein the spring, the pedestal, and the screw are clamped and held by a two-piece resin protective case. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 30, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 8

[Correction method] Change

[Correction contents]

8. The terminal block fixing tool, the clamping plate, the spring, the pedestal, and the screw are clamped and held by a two-piece resin protective case. Item 7. A terminal block according to item 7.

[Procedure amendment]

[Submission date] December 11, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 8

[Correction method] Change

[Correction contents]

Claims (8)

[Utility model registration claims] 1. A pair of bending support members for holding a terminal block on a fixed rail for terminal block and supporting a pair of projecting crimping pieces on both side surfaces of the fixed rail for terminal block so as to hold them from below. Are respectively provided at the lower ends of both sides, and in order to insert the terminal block fixed rail diagonally from below into the rail insertion groove that is a space formed by the pair of bending support members, at the insertion side edge portion of the rail insertion groove. A fixing bracket main body in which a space where the protruding crimping piece on the insertion side escapes is formed, and an elastic plate provided on the lower surface side of the fixing bracket main body, wherein the terminal block fixing rail is inserted into the rail insertion groove. The pressing plate that presses the upper surface of the protruding crimping piece in this state and the upper plate part of the fixing metal fitting body are screwed together, and the tip end of the pressing plate contacts the center of the upper surface of the pressing plate, and the pressing plate is moved downward. Pressed on A terminal block fixing tool, comprising at least a screw for allowing the terminal block to be fixed. 2. The terminal block fixing tool according to claim 1, wherein a lower end portion of the space is formed into an inclined surface which is inclined upward toward both sides of the fixing metal body. 3. The rail insertion groove is formed by dividing the rail insertion groove into left and right positions corresponding to the shapes of the left and right protruding crimping pieces of the terminal block fixed rail, and the pressing plate is provided at the inner lower ends of the left and right rail insertion grooves, respectively. The terminal block fixing tool according to claim 1 or 2, wherein a locking piece is formed so as not to escape downward, and a projection corresponding to the locking piece is formed on the pressing plate. 4. The terminal block fixing tool according to claim 1, wherein the pressing plate is shaped so as to be bent downward from the center to both end directions. 5. A screw for pushing down the pressing plate downward is screwed onto the upper plate portion of the fixture body, and the pressing plate is downwardly arranged around the screw between the upper plate portion and the pressing plate. The terminal block fixture according to claim 1, wherein the terminal block fixture is provided with a spring for pushing down. 6. A screw screwed to the left and right positions of a fixing plate located on the upper surface of the fixing device main body according to claim 1, and the screw for holding the electric wire end between them. A terminal block comprising: two upper and lower clamp plates that are supported; and a spring that is provided above the upper sandwich plate to urge the sandwich plates upward. 7. A pedestal locked to the left and right positions of a fixing plate located on the upper surface of the terminal block fixture according to claim 1, and a pedestal screwed to the pedestal. A terminal block, comprising: a screw that is fixed to the upper surface of the terminal block fixture. 8. The terminal block according to claim 6, wherein each member is sandwiched and held by a protective case made of resin that is split in two.