JP2593119Y2 - Air conditioner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having an improved cord connection technique in an electric component box of an indoor unit.

[0002]

2. Description of the Related Art As is well known, an electrical component box is provided on the side of an indoor unit of a split type air conditioner, and the electrical component box has various controls such as sensors, switches, and microcomputers. Parts are accommodated, and cords such as a power cord, an external cord, and an earth cord are connected to these parts.

FIG. 6 illustrates a conventional structure of a power cord connecting portion in an electric component box of such an air conditioner.

A body switch 3 is provided on the inner side of the electric component box 31.
2 is attached, and a power cord 3
3 is connected via a solder portion 33a. The power cord 33 is connected to the clamp 3 made of a band-shaped metal fitting near the connection portion.
The clamp 34 is fastened to the electrical component box 31 with one screw 35.

Although not shown, a grounding fixture for screwing a grounding cord is provided on a side surface of the electric component box 31.

Heretofore, in order to make effective use of space and reduce the number of components, this earth mounting device is often mounted in substantially the same arrangement as a connector for connecting an external cord. For example, in Japanese Utility Model Laid-Open No. There is disclosed a technique of fixing an earth cord mounting plate to an electric component box by also using a set screw of a connector retainer.

[0007]

[Problems to be solved by the invention] However, Shokai 59
In the technology of fixing the grounding cord mounting plate to the electrical component box by also using the set screw of the connector holder as in the case of -174523, if the set screw is removed when the earth cord is attached or detached, the connector holder is also detached at the same time. Become. For this reason, when grounding is performed at the indoor unit installation site, the connector retainer is also attached and detached at the same time, and there has been a problem that the operation is complicated by the reduced number of parts. Further, in this technique, the connector is substantially held down by the grounding plate, and there is also a problem in electrical reliability.

[0008] The present invention has been made in view of such circumstances, and while maintaining a simple configuration without increasing the number of parts, it is possible to improve the reliability of the cord connection portion in the electrical component box of the indoor unit. It is an object of the present invention to provide an air conditioner capable of improving the workability in production, installation, and the like.

[0009]

In order to achieve the above object, the present invention provides an electric unit box in an indoor unit,
In an air conditioner in which an earth cord is connected and fixed with a set screw to an earth attachment provided on a side surface of the electric component box, the non-threaded portion of the earth attachment is connected to a side portion of the electric component box and the electric component. The connector presser is detachably clamped between the box and a connector presser for fixing the connector for connecting an external cord to the box, and the connector presser is moved toward the electric component box side by locking means comprising locking claws and locking holes. It is characterized by being detachably fixed.

[0010]

According to the present invention, the non-threaded portion of the grounding fixture is detachably sandwiched between the electrical component box and the connector retainer, and the set screw operation on the grounding fixture is performed by the connector retainer. Since it is performed separately from mounting, for example, when grounding is performed at the indoor unit installation site, even if the ground cord is attached and detached with the set screw operation, it is not necessary to attach and detach the connector presser at the same time, making the work easier Can be done. Further, since the ground cord is directly tightened to the ground mounting fixture by the set screw, the electrical reliability of the electric component box can be improved as compared with the conventional configuration in which the connector is pressed by the ground mounting plate. Moreover, since the connector retainer is detachably fixed to the electric component box side by a non-screw type locking means including a locking claw and a locking hole, the number of parts such as screws is not particularly increased, and The structure is simple, there is no extra expansion of space, the production is easy and the cost can be reduced.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a first embodiment. FIG. 1 is a view of an electric component box provided on a side of an indoor unit of the split type air conditioner as viewed from the inside, and FIG. 2 is a cross-sectional view taken along line AA of FIG.

In this embodiment, the inner surface 1 of the side wall of the electric component box 1
A power cord 3 is connected to the body switch 2 attached to the connector a by a solder portion 3a, and the power cord 3 is held by a clamp 4 near the connection portion.

That is, the clamp 4 has a rectangular plate shape as shown in FIG. 1 and faces the inner surface 1a of the side wall of the electric component box 1 in a state where the edges are horizontal and vertical. The lower side of this clamp 4 is a projection 5 protruding from the inner surface 1 a of the side wall of the electric component box 1.
The power cord 3 is pressed and held toward the electric component box 1 at the upper part of one side of the clamp 4 by using one screw 6.

On the other side of the clamp 4, a rectangular frame-like portion 7 is provided so as to surround the screw 6, and an upwardly protruding portion 8 protrudes from the upper portion over the entire width.

On the other hand, on the inner surface 1a of the side wall of the electric component box 1, a locking projection 9 having an L-shaped cross section as a locking portion comprising a horizontal piece 9a and a hanging piece 9b is projected, and the hanging piece 9b is provided.
Are arranged above the upward projecting portion 8 of the clamp 4, and the hanging piece 9 b covers the surface side of the upward projecting portion 8 in an approaching state and is arranged close to the upper portion of the frame 7 of the clamp 4. .

At both ends in the width direction of the locking projections 9, closing walls 10 are provided.
Abuts on both widthwise edges of the upwardly protruding portion 8.

According to the configuration of the present embodiment, when a turning force is generated with the screw 5 as a fulcrum with respect to the clamp 4, both ends in the width direction of the upward projecting portion 8 of the clamp 4 are formed by the locking projection 9. Since the clamp 4 is in contact with the closing wall 10, the rotation of the clamp 4 around the screw 5 is prevented.

Further, since the hanging piece 9b of the locking projection 9 covers the surface of the upwardly projecting portion 8 of the clamp 4 in a close state, the upper side of the clamp 4 is located on the inner surface 1a of the side wall of the electric component box 1. It is also prevented from tilting away from the camera.

Therefore, even if a tensile load or the like is applied to the power cord 3 from the outside along the length direction and the turning force with the screw 6 as a fulcrum acts on the clamp 4 for pressing and holding the power cord 3, the clamp 4 Are prevented from rotating by the locking projections 9, so that no unnecessary force acts on the solder portion 3 a between the power cord 3 and the body switch 2. Further, even if an external load acting on the power cord 3 in a direction away from the inner surface 1 a of the side wall of the electric component box 1, the clamp 4 can be locked by the locking projection 9.
As a result, tilting in the same direction is prevented, so that wobbling of the clamp 4 does not occur. Therefore, according to the present embodiment, it is possible to improve the mechanical and electrical reliability of the cord connection part in the electric component box 1 of the indoor unit.

Further, since the screw 6 for fastening the clamp 4 remains one, there is no particular increase in the number of parts.
The structure is simple, the space is not excessively enlarged, the production is easy, and the cost can be reduced.

FIGS. 3 to 5 show a second embodiment. FIG. 3 is an exploded perspective view of components showing an assembling configuration, and shows a state as viewed from the outer side of the electric component box. FIG. 4 is a longitudinal sectional view showing a state after assembly, and FIG. 5 is a plan view of the same.

In this embodiment, as shown in FIG. 3, a pair of upper and lower base plates 13a and 13b are protrudingly provided on the outer side of the electric component box 12 provided on the side of the indoor unit main body 11. . A locking projection 14 is provided on the outer surface of the electric component box 12 on the front side of the unit, and one locking hole 15a for component locking is formed in the locking projection 14. ,
Similarly, a pair of upper and lower locking holes 15b for locking components are formed on the rear side of the outer wall of the electric component box 12.

A connector 18 for connecting the component lead 16 and the external lead 17 is connected to a connector holding member 19.
The base plates 13a, 1 on the outer surface of the electric component box 12
It is fixed between 3b. That is, the connector presser 19
Has a cover 19a for covering and holding the connector 18 and a joining portion 19b for surface joining to the outer surface of the electric component box 12, and the cover portion 19a and the joining portion 1 are provided.
The engaging claws 20a, 20b provided on the 9b are respectively engaged with the engaging holes 15a, 15b of the electric component box 12, whereby the connector 18 is detachably fixed. The external lead wire 17 is pressed and held by a connector clamp 19 with a cord clamp 21, and the cord clamp 21 is fixed by a screw 23 screwed into a screw hole 22 of the connector clamp 19.

In this embodiment, as shown in FIG. 3, a bent plate-like grounding fixture 24 is provided.
That is, the ground attachment 24 has a flat insertion portion 24a.
And an earth connection portion 24c connected via an L-shaped bent portion 24b. A pair of screw holes 25 are formed in the earth connection portion 24c, and one side portion of the insertion portion 24a is formed. A pair of notches 26 are formed.

As shown in FIG. 4, the insertion portion 24a of the earth attachment 24 is detachably clamped between the side surface of the electric component box 12 and the joint 19b of the connector retainer 19. Thereby, the earth attachment 24 is joined and fixed to the electric component box 12. In this case, the ground attachment 24 engages the pair of cutouts 26 formed on one side of the insertion portion 24a with the locking claws 20b, and is thereby prevented from being removed.

As shown in FIG. 5, a screw 2 is provided in the screw hole 25 of the earth connection portion 24c of the earth attachment 24.
7 are screwed together, whereby the earth cord 28 is connected.

Next, the operation will be described.

At the time of assembling the indoor unit, first, the earth attachment 24 is placed in a surface-joined state such that the insertion portion 24a is located rearward between the base plates 13a and 13b on the outer surface of the electric component box 12. Connector 18 from outside
Cover the connector holding tool 19 in the holding state. Then, the locking claws 20a, 20b of the connector retainer 19 are connected to the electric component box 1
The second locking holes 15a and 15b are locked. As a result, as shown in FIG. 4, the insertion portion 24a of the earth attachment 24 is clamped between the side surface of the electric component box 12 and the joint 19b of the connector retainer 19, and as shown in FIG. In this state, the ground connection portion 24c of the ground mounting tool 24 is exposed to the outside of the outer surface of the electric component box 12.

When the indoor unit having such a component mounting structure is installed on a building wall or the like, the ground cord 28 is connected to the ground mounting tool 24. In this case, depending on the installation position, there may be a case where there is a wide work space in the side direction of the electric component box 12, and a case where there is no work space. In this embodiment, as described above, the ground connection portion 24c is exposed to the outside of the side surface of the electric component box 12, so that grounding can be carried out without changing the set screw 27 using a screwdriver from the same direction. Need to be operated.

If there is a large work space in the side direction of the electric component box 12, a screwdriver can be inserted from the same direction, the set screw 27 can be attached and detached, and the earth cord 28 can be tightened.
That is, grounding can be performed without the need to remove the connector retainer 19.

On the other hand, when there is not enough working space in the side direction of the electric component box 12, the locking claws 20a, 20b of the connector presser 19 are once removed from the locking holes 15a, 15b, and then the grounding fixture 24 is removed. Then, the set screw 27 may be operated from the front of the unit or the like to connect the ground cord 28. Thereafter, the grounding fixture 24 may be clamped and held by the connector retainer 19 by the same operation as during assembly.

According to the above embodiment, the non-threaded portion of the earth attachment 24 is connected to the electric component box 12 and the connector holder 19.
And the operation of the set screw 27 to the ground mounting tool 24 is performed separately from the mounting of the connector holding tool 19, so that the work can be performed easily. Further, since the ground cord 28 is directly tightened to the ground mounting fixture by the set screw 27, the electrical reliability of the electrical component box can be improved as compared with the conventional configuration in which the connector is pressed by the ground mounting plate. Moreover, the connector retainer 19 is provided with the locking claws 20a, 20b and the locking hole 1.
Since it is detachably fixed to the electric component box 12 side by the non-screw type locking means composed of 5a and 15b, the number of parts such as screws is not particularly increased, the configuration is simple, and the extra space is increased. And can be easily manufactured at low cost.

[0034]

[Effects of the Invention] As described above, according to the present invention, while maintaining a simple configuration without increasing the number of parts,
An excellent effect is obtained in that the reliability of the cord connection portion in the electric component box of the indoor unit can be improved, and the workability in manufacturing and installation can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a main part of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 4 is a sectional view showing a main part of the embodiment.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a configuration diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 12 Electric component box 2 Body switch 3 Power cord 4 Clamp 6 Screw 9 Locking part (locking projection) 15a, 15b Locking hole 18 Connector 19 Connector holding tool 20a, 20b Locking claw 24 Grounding fixture 28 Earth Code 27 set screw

Claims (1)

(57) [Scope of request for utility model registration] 1. An air conditioner in which an electric component box is provided in an indoor unit, and an earth cord is connected and fixed by a set screw to an earth fixing device arranged on a side surface of the electric component box. Part is detachably clamped between a side portion of the electrical component box and a connector retainer for fixing an external cord connector to the electrical component box, and the connector retainer has a locking claw and An air conditioner characterized in that the air conditioner is detachably fixed to the electric component box side by a locking means including a locking hole.