JPH09245862A - Terminal board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal board capable of directly fitting to a control circuit board by electrically connecting a socket terminal piece for fitting a wiring cable and a board fitting terminal piece having a jacket part for inserting a tab terminal. SOLUTION: A socket terminal piece 3 formed by bending a metal belt-shaped plate is arranged within a case 1 of a terminal board A1 . Each strand 21 of a wiring cable 2 is closely pressed against an interposing part 33 through a guide plate 9 to electrically connect them. A seating part 31 is closely pressed against a contact part 52 of a board fitting terminal piece 5 through the elasticity of the socket terminal piece 3 to electrically connect them. A tab terminal projecting to a control circuit board 4 is inserted from a down part into a jack part 51 formed in one end part of the board fitting terminal piece 5. The terminal board A1 is directly fixed onto the control circuit board 4, and they are simply connected without use of a lead wire or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block used for connecting two electric devices to each other, such as an indoor unit and an outdoor unit of an air conditioner.

[0002]

2. Description of the Related Art Generally, there is a so-called separate type air conditioner which is separated into two units, an indoor unit and an outdoor unit. In such a separate type air conditioner, the indoor unit side is used. Many of them are provided with a power cord, and therefore, in order to supply electric power to the outdoor unit and control its operation, it is necessary to electrically connect both devices to each other.

Therefore, conventionally, a wiring cable of three-wire type or four-wire type is used for power supply and information communication, and an indoor unit and a terminal block for relay are separately attached to both indoor units. Wiring cables are used to connect the two to each other, and each control circuit board of the indoor unit and the outdoor unit and each terminal block are electrically connected using lead wires.

In the air conditioner, the locations where the indoor unit and the outdoor unit are installed in the house are not fixed, and the distance between the indoor unit and the outdoor unit varies. The length of the cable needs to be appropriate. Therefore, the connection of the wiring cable to the terminal block can be performed by directly inserting the core wire of the wiring cable into the terminal block.

[0005]

However, in the conventional configuration, in order to electrically connect the indoor unit and each control circuit board of the indoor unit and the terminal block to each other, power supply and information communication are performed. Depending on the number of wires of the wiring cable, three or four lead wires must be used, and each of these lead wires must be individually connected between the control circuit board and the terminal block.

Moreover, the connection work needs to be performed on each of the indoor unit side and the outdoor unit side, so that the connection work is troublesome and troublesome. Moreover, since the work process and the number of parts are increased, the cost is also increased.

The present invention has been made in order to solve the above-mentioned problems, and the terminal block can be directly mounted on the control circuit board of the electric device, so that the connecting work can be performed more easily than before. The challenge is to be able to significantly reduce it.

[0008]

The present invention employs the following structure to solve the above-mentioned problems.

That is, the terminal block according to the first aspect of the present invention is directly attached to a socket terminal piece into which a wiring cable for connection between electric devices is inserted and a control circuit board constituting the electric device. Both the board mounting terminal piece and the board mounting terminal piece are mounted on the case, and both terminal pieces are electrically connected in the case.

According to a second aspect of the invention, in the terminal block according to the first aspect, the case comprises two cases, one for the socket terminal piece and one for the board mounting terminal piece. Are detachably attached to each other, and a connecting means for electrically connecting the socket terminal piece and the board mounting terminal piece is formed on the opposite sides of both cases.

According to a third aspect of the present invention, in the terminal block according to the first aspect, the case includes two cases, one for the socket terminal piece and one for the board mounting terminal piece. Are hinged together.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In this embodiment, a description will be given of terminal blocks mounted on an indoor unit and an outdoor unit that constitute an air conditioner.

First Embodiment FIG. 1 is a perspective view showing a terminal block according to the first embodiment and a control circuit board of an indoor unit or an outdoor unit to which the terminal block is attached. FIG. 2 is a rear view of the terminal block shown in FIG. FIG. 3 is a perspective view when viewed, and FIG. 3 is a cross-sectional view of the terminal block.

The terminal block A _{1 according to the} first embodiment is directly attached to the single case 1, the socket terminal piece 3 into which one end of the wire 21 of the wiring cable 2 is attached, and the control circuit board 4. Board mounting terminal piece 5 for

The case 1 has a substantially flat box shape made of a molded product such as synthetic resin, and has a wiring cable 2 on one end side.
The insertion ports 11 are formed in the number corresponding to the number of the individual strands 21 constituting the wire, and the other end side has the number of the recesses 1 corresponding to the insertion ports 11.
2 is provided, and the board mounting terminal piece 5 is disposed in each recess 12. A reverse knob 13 for attaching and detaching the wire 21 of the wiring cable 2 is provided on the upper part of the case 1. In addition, 14 is a case 1 to the control circuit board 4 with screws 7
The case 1 is a mounting hole for fixing the case 1.

The socket terminal pieces 3 are arranged in the case 1 in the number corresponding to the number of the insertion ports 11. Each socket terminal piece 3 is a flat seating portion 31, which is seated in the case 1 by curving a conductive strip of metal or the like.
A wedge portion 32 for preventing the strand 21 from coming out and a sandwiching portion 33 for sandwiching the strand 21 between the guide plate 9 arranged on the lower surface of the case 1 are integrally formed, and the wedge portion 32 forms the wedge portion 32. It faces the insertion port 11 through a notch 131 formed in the bottom of the reverse knob 13.

Further, the board mounting terminal piece 5 is formed by molding a conductive strip of metal or the like to bend a jack portion 51 into which a tab terminal 6 to be described later is inserted and a substantially horizontal direction from the jack portion 51. Contact portion 52 extended inside the case 1
Are provided. The jack portion 51 has a shape called a so-called faston terminal in this example, and includes a release portion 511 having an inverted L-shaped cross section and a sandwiching portion 512 that is folded back from both ends of the release portion 511 to one side. A projection 513 is formed at the center of the release portion 511. Further, the contact portion 52 contacts the seating portion 31 of the socket terminal piece 3 and is electrically connected.

On the other hand, through holes 41 are formed vertically through the control circuit boards 4 of the indoor unit and the outdoor unit, respectively, and the through holes 41 are formed in the through holes 41. The terminals 6 are inserted and fixed by solder or the like. The tab terminal 6 is formed with a fitting hole 61 into which the protrusion 513 of the jack portion 51 of the board mounting terminal piece 5 is fitted. Reference numeral 42 is a screw hole formed in the control circuit board 4 for screw attachment.

Next, a procedure for electrically connecting the wiring cable 2 to the control circuit board 4 by using the terminal block A ₁ having the above-described structure will be described.

First, the jack portion 51 of the board mounting terminal piece 5 of the terminal block A ₁ is inserted into the tab terminal 6 attached to the control circuit board 4. Then, the protrusion 51 of the jack portion 51
3 is fitted into the fitting hole 61 of the tab terminal 6 and both 5, 6
Is connected. As a result, the control circuit board 4 is electrically connected to the terminal pieces 5 and 3 of the terminal block A ₁ via the tab terminals 6.

Next, the screw 7 is inserted into the mounting hole 14 of the case 1 and screwed into the control circuit board 4 to securely fix the terminal block A ₁ on the control circuit board 4.

Subsequently, each wire 21 of the wiring cable 2 is inserted from the insertion port 11 of the case 1, respectively. In that case,
If the terminal block A ₁ is previously fixed with the screw 7 as described above, it is convenient because excessive stress is prevented from being applied to the tab terminal 6.

When the wire 21 is inserted into the insertion port 11, the wedge portion 32 of the socket terminal piece 3 is correspondingly moved to the wire 21.
It is pushed by and tilted to the inner side of the case 1, and the wire 21
Enters between the guide plate 9 and the holding portion 33, and the holding portion 33 is pushed downward, so that the elastic restoring force causes the wire 21 to be pressed between the guide plate 9 and the socket terminal piece. 3 is electrically connected. Further, since the strand 21 is pressed upward by the elastic restoring force of the wedge portion 32, the strand 21 is prevented from coming out.

As a result, the control circuit board 4 and the wiring cable 2 are electrically connected to each other via the terminal block A ₁ .

In this way, the terminal block A of this embodiment is
₁ , the jack portion 51 of the board mounting terminal piece 5 is directly inserted into the tab terminal 6 provided on the control circuit board 4, so that the control circuit board 4 and the terminal block A ₁ are connected as in the conventional case. No need for a lead wire, and the labor of connection work can be greatly reduced.

Further, in order to disconnect the wiring cable 2 from the terminal block A ₁ , the reverse knob 13 is pushed downward, and the wedge portion 32 of the socket terminal piece 3 is pushed downward by the reverse knob 13 so that the wire 21 Is disengaged. Then, by pulling the wiring cable 2 in this state, each wire 21 is easily pulled out from the case 1.

Furthermore, in order to remove the terminal block A ₁ from the control circuit board 4, after loosening the screw 7 and pulling it out from the case 1, the upper part of the release part 511 of the jack part 51 is pressed, and the projection 513 of the jack part 51 is pushed. Since the engagement state of the tab terminal 6 with the fitting hole 61 is released, the entire terminal block A ₁ can be pulled up above the control circuit board 4.

Embodiment 2 FIG. 4 is a perspective view showing a terminal block according to Embodiment 2 and a control circuit board of an indoor unit or an outdoor unit to which this terminal block is attached, and FIG. 5 is a sectional view of the terminal block.

The terminal block A ₂ in the _second embodiment is roughly divided into _two parts, a cable connection side part A ₂ a and a board mounting side part A ₂ b, and both parts A ₂ a, A ₂ b. Is detachably provided.

That is, the above-mentioned cable connection side component A ₂ a
Includes a case 1a made of molded articles such as synthetic resin, and a socket terminal strip 3a for the wire connection of cables 2, a connector terminal pieces 8a for connection to the board mounting side component A ₂ b.

The case 1a has a wiring cable 2 on one end side.
The number of insertion ports 11 corresponding to the number of the individual wires 21 constituting the
a is formed, and recesses 12a corresponding to the number of the insertion ports 11a are provided on the other end side, and the connector terminal pieces 8a are provided in the recesses 12a.
Is arranged. Further, a reverse knob 13a for attaching and detaching the wire 21 of the wiring cable 2 is provided on the upper part of the case 1a, and further, the board mounting is performed on the left and right side wall portions on the mounting side of the connector terminal piece 8a of the case 1a. A locking projection 15a for fixing the case 1b on the side component Bb side is formed. Reference numeral 14a is a mounting hole for fixing the case 1a to the control circuit board 4 with a screw 7, which is formed by vertically penetrating the case 1a.

The socket terminal piece 3a is the same as in the first embodiment.
The socket terminal piece 3 has the same shape, and the seating portion 31a, the wedge portion 32a, and the holding portion 33a are integrally formed together, and the wedge portion 32a is formed on the bottom portion of the reverse knob 13a of the case 1a. It faces the insertion port 11a through the notch 131a.

The connector terminal piece 8a is provided with a jack portion 81a into which a male terminal portion 54b of a board mounting terminal piece 5b, which will be described later, is inserted, and a contact portion 82a extending from the jack portion 81a into the case 1a. Has been. And
The jack portion 81a is a faston terminal having the same shape as the board mounting terminal piece 5 of the above-described first embodiment, and has a release portion 811a, a sandwiching portion 812a, and a protrusion 813a, and a contact portion. 82a is in electrical contact with the seating portion 31a of the socket terminal piece 3a.

On the other hand, the board mounting side component A ₂ b includes a case 1b made of a molded product such as a synthetic resin and a board mounting terminal piece 5b for connecting the control circuit board 4.

The case 1b has a cable connection side component A ₂ a.
On the left and right side walls on the one end side facing each other, claw pieces 16b that engage with the locking projections 15a of the cable connection side component A ₂ a are formed, and on the other end side of the case 1b, the above-mentioned The number of recesses 12b corresponding to the connector terminal pieces 8a is formed.

The board mounting terminal piece 5b is formed by bending a conductive strip of metal or the like to form a tab terminal portion 53b having an inverted L-shaped cross section and arranged in each recess 12b of the case 1b. A tabular male terminal portion 54b that penetrates the case 1b from the portion 53b and protrudes toward the connector terminal piece 8a is integrally formed. The male terminal portion 54b has a jack portion 81a of the connector terminal piece 8a. A fitting hole 541b into which the protrusion 813a is fitted is formed.

[0037] Then, the connector terminal piece 8a of the cable connection side parts A ₂ a, by the vinegar shaped terminal 54b of the substrate mounting side component A ₂ b, electrically both parts A ₂ a, the A ₂ b together Connecting means for connecting to.

Next, using the terminal block A ₂ having the above structure,
A procedure for electrically connecting the wiring cable 2 to the control circuit board 4 will be described.

First, regarding the board mounting side component A ₂ b of the terminal block A ₂ , the tab terminal portion 5 of the board mounting terminal piece 5 is previously prepared.
After inserting 3b into the through hole 41 formed in advance at a predetermined position of the control circuit board 4, the tab terminal portion 53b is fixed by soldering or the like. As a result, the control circuit board 4
Is electrically connected to the board mounting terminal piece 5b of the board mounting side component A ₂ b.

On the other hand, for the cable connection side component A ₂ a, each wire 21 of the wiring cable 2 is previously inserted from the insertion port 11 a of the case 1 a before connecting with the board mounting side component A ₂ b. Then, each wire 21 is electrically connected to the socket terminal piece 3a.

After the indoor unit or the outdoor unit is installed in a predetermined place, the cable connection side component A ₂ a is joined to the board mounting side component A ₂ b. That is, when the connector terminal piece 8a is inserted into the male terminal portion 54b of the board mounting terminal piece 5b, the projection 813a of the jack portion 81a of the connector terminal piece 8a fits into the male terminal portion 54b into the fitting hole 541b, and both 8a, 5b is connected, and the pawl piece 16b of one case 1b is connected to the locking projection 15a of the other case 1a.
And the cases 1a and 1b are mechanically coupled to each other.

Finally, by inserting the screw 7 into the mounting hole 14a of the case 1a and screwing it into the control circuit board 4, the terminal block A ₂
Is securely fixed on the control circuit board 4.

In this way, after mounting the board mounting side component A ₂ b on the control circuit board 4 in advance, the cable connecting side component A ₂ a is connected to the board mounting side component A ₂ b. For example, the wiring cable 2 can be easily connected to the control circuit board 4 of the device even when the installation position of the electric device is at a high position, which is convenient.

Both parts A ₂ a, which compose the terminal block A ₂ ,
To separate the A ₂ b, after pulled out from the case 1a by loosening the screws 7, engaged with the locking projection 15a of the cable connection side parts A ₂ a expanding the substrate mounting side component A ₂ b of the claw piece 16b When the connection is released and the cable connection side component Ba is pulled, the connection between the connector terminal piece 8a and the board mounting terminal piece 5b is also released, so that both components A ₂ a and A ₂ b are separated. Also, when disconnecting the wiring cable 2 from the cable connection side component A ₂ a,
Similar to the first embodiment, the reverse knob 13a may be pushed downward and the wiring cable 2 may be pulled.

In the second embodiment, the cable connection side component A ₂ a and the board mounting side component A ₂ b are horizontally butted and joined to each other.
As shown in FIG. 6, the cable connection side component A ₂ a and the board mounting side component A ₂ b may be joined to each other in a state of being orthogonal to each other depending on the form of wiring.

Embodiment 3 FIG. 7 is a perspective view of a terminal block according to Embodiment 3 of the present invention, and FIG.
FIG. 3 is a sectional view of the terminal block.

The feature of the terminal block A _{3 in} the third embodiment is that it comprises a cable connection side component A ₂ a and a board mounting side component A ₂ b, and each component A ₂ a, A ₂ b is the same as in the second embodiment. Instead of being separated into two parts, each case 1a, 1b of both parts A ₂ a, A ₂ b
Is hinged by a pin 18 so that it can swing.

[0048] Thus, in the embodiment 3, the substrate mounting side component A ₂ b of the case 1b, the cable connection side parts A ₂
arm portion 17b is formed on the right and left side facing the a, the arm portion 17b is swingably attached to a pin 18 in the casing 1a of the cable connection side parts A ₂ a, moreover, one of the cable connection side part A and ₂ a connector terminal pieces 8a, the a substrate mounting terminal piece 5b of the board mounting side component a ₂ b, embodiment 2
The jack portion 81a and the male terminal portion 54b are not provided, but instead, the connector terminal piece 8a and the board mounting terminal piece 5b are connected to each other by the lead wire 25.

Since the other structure is similar to that of the second embodiment, the portions corresponding to those of the second embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

In the terminal block A ₃ of the _third embodiment, even after the board mounting side component A ₂ b is attached to the control circuit board 4, the cable connecting side component A ₂ a is rotated by rotating the case 1a. The angle of the inlet 11a can be adjusted arbitrarily. For this reason, the degree of freedom in drawing out the wiring cable 2 is increased, so that versatility is increased and connection work is facilitated.

[0051]

According to the present invention, the following effects can be obtained.

(1) Since the terminal block according to the first aspect can be directly attached to the control circuit board of the electric device, it is not necessary to use the conventional lead wire. Therefore,
The work of connecting lead wires can be greatly reduced.

(2) Since the terminal block according to the second aspect is separated into two parts, the case having the board mounting terminal pieces is previously mounted on the control circuit board before installing the electric equipment. If the wiring cable is connected to the case that has the socket terminal piece after the device is installed in the specified position and then both cases are combined, it is possible to easily connect the wiring cable to the device even when the installation location of the electrical device is at a high position. Can be connected.

(3) In the terminal block according to the third aspect, since the case having the board mounting terminal piece and the case having the socket terminal piece are hinge-coupled to each other, the angle of the socket terminal piece can be adjusted. The wiring cable can be pulled out at any angle. That is, the flexibility of drawing out the wiring cable is increased, so that the versatility is increased and the connection work is facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a terminal block according to a first embodiment of the present invention and a control circuit board of an indoor unit or an outdoor unit to which the terminal block is attached.

FIG. 2 is a perspective view of the terminal block of FIG. 1 when viewed from the back side.

FIG. 3 is a cross-sectional view of the terminal block according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a terminal block according to the second embodiment of the present invention and a control circuit board of an indoor unit or an outdoor unit to which the terminal block is attached.

FIG. 5 is a sectional view of a terminal block according to the second embodiment of the present invention.

FIG. 6 is a perspective view showing a modified example of the terminal block according to the second embodiment of the present invention.

FIG. 7 is a perspective view of a terminal block according to a third embodiment of the present invention.

FIG. 8 is a sectional view of a terminal block according to a third embodiment of the present invention.

[Explanation of symbols]

A ₁ , A ₂ , A ₃ ... Terminal block, 1, 1a, 1b ... Case, 2 ...
Wiring cable, 3, 3a ... Socket terminal piece, 4 ... Control circuit board, 5, 5b ... Board mounting terminal piece, 8a ... Connector terminal piece.

Claims (3)

[Claims] 1. A relay terminal block which is attached to each of two electric devices and connects the two devices to each other, and a socket terminal piece into which a wiring cable for connecting the electric devices is inserted, A terminal block characterized in that a case is equipped with a board mounting terminal piece that is directly attached to a control circuit board that constitutes a device, and both terminal pieces are electrically connected in the case. 2. The terminal block according to claim 1, wherein the case includes two cases, one for a socket terminal piece and one for a board mounting terminal piece, and both cases are provided so as to be detachable from each other, In addition, the terminal block is characterized in that a connection means for electrically connecting the socket terminal piece and the board mounting terminal piece is formed at the opposing portions of both cases. 3. The terminal block according to claim 1, wherein the case comprises two cases, one for mounting a socket terminal piece and the other for mounting a board mounting terminal piece, and both cases are hinge-coupled to each other. Characteristic terminal block.