JP2000087855A - Closed type electric motor-driven compressor with electric power supplier and refrigerator assembled therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closed type electric motor-driven compressor with an electric power supplier and a refrigerator assembled therewith capable of attaining improvement of workability, by facilitating and surely performing the removing/mounting work of a screw of a terminal block. SOLUTION: This closed type electric motor-driven compressor with an electric power supplier is provided with an overload protector device P for an electric motor stored in an one-side-opened cover 9, to mount one surface side of the opened cover 9 in an outer shell 1 of the closed type electric motor- driven compressor, a terminal block 10 arranging a cord connecting terminal 11 and a terminal block cover 15 covering this terminal block 10. An opening part is provided in the other surface adjacent to the surface of the opened cover 9, the terminal block 10 arranging the cord connecting terminal is provided in a separate unit from the cover 9, and the terminal block 10 is removably mounted by a slide fitting mechanism in the opening part of the cover 9. This closed type electric motor-driven compressor is assembled in a refrigerator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic electric compressor provided with a power supply device and a refrigerator incorporating the same.

[0002]

2. Description of the Related Art A hermetic electric compressor incorporated in a refrigerator or the like is provided with a starting device for the electric motor and an overload protection device for protecting the electric motor when any trouble occurs. And attached to the hermetic electric compressor. The electric motor and the starting device, the socket terminal of the starting device is inserted into the input terminal provided on the outer shell of the electric motor, and the electrical connection and mounting are performed simultaneously,
A cord (lead wire) is connected to each device to supply power to the electric motor.

For example, Japanese Unexamined Utility Model Publication No. 51-106004 discloses a unit in which a starting device and an overload protection device are attached to a base to form a unit. To connect to the motor and make electrical connection at the same time. The hippopotamus is fixed to the electric motor with auxiliary fittings. A power supply cord is connected to terminals of the starting device and the overload protection device, and the cord is drawn out from a cord through hole of the cover.

Further, in the device described in Japanese Patent Application Laid-Open No. 61-35595, a non-contact starting device and an overload protection device are mounted and integrated in a protection cover, and this is attached to an electrode rod of a compressor outer shell. The electrode starter of the contact starter is inserted to attach to the compressor and make electrical connection at the same time.

[0005] Further, there is one disclosed in Japanese Patent Application Laid-Open No. 58-47976. This allows repairs without special skills and without using special tools.However, the position of the power cord is prevented from being shifted to the external grip terminal, and the external grip terminal is detached from the terminal. And has a bridge with screws to prevent this, which is supported by a cover on the surrounding wall of the compressor shell. The surrounding wall is surrounded by a lid, and the lid is fixed to the compressor by a C-shaped elastic piece surrounding the lid.

[0006] Generally, the compressor is arranged at the lowermost part of the refrigerator, and since the food storage space and the like are provided at the lowermost part, the compressor has the smallest size in the front and rear directions of the refrigerator, that is, in the front-rear direction. Be placed. As a result, usually, the power supply device and the protection unit of the compressor are mounted at one of the left and right positions when viewed from the back of the refrigerator. When any abnormality occurs in the compressor and a failure diagnosis is performed, and the work of removing and attaching the power cord or the protection unit is a side work from the left or right direction of the compressor.

[0007]

SUMMARY OF THE INVENTION The above-mentioned JP-A-58-47 is disclosed.
In the device described in Japanese Patent No. 976, the work of removing and attaching the screws is on the side of the compressor, and the space around the compressor of the refrigerator is narrow because the priority is given to securing the space in the refrigerator, and is close to the floor surface. Work is difficult. In service work, there is no other way than to change the attitude of the worker himself, and work efficiency is extremely poor.

In the above-mentioned Japanese Utility Model Application Laid-Open No. 51-106004 and Japanese Patent Application Laid-Open No. 61-35595,
When an external force such as tension is applied to the external drawer cord, the external force directly affects the terminal portion, and the IEC standard (International Erec) for the hermetic electric compressor is provided.
The following conditions specified in IEC335-1 "Safety of household and similar electric appliances" of the International Technical Standards and the International Technical Standards and the like can not be satisfied.

1. Mounting X type Flexible cables or cords can be easily mounted and replaced without using special tools, and the flexible cables do not require special processing.

[0010] 2. Structure, performance Terminal arrangement Each terminal shall be located close to the terminal corresponding to the terminal of different polarity and the terminal corresponding to the ground terminal.

Screw terminal of power cord terminal M3.5 or more Ground terminal Screw terminal of M3.5 or more Cord clamp The power cord, internal wiring cord, and earth cord should be clamped together.

Cord clamp Cord displacement 100N 1sec 25 times MAX 2mm Strength Terminal displacement 100N 1sec 25 times MAX 1mm Terminal block cover Can be opened without using a special tool.

Further, no consideration has been given to the external force applied to the input pin terminal. For example, if the fixing structure of the cover that houses the starting device and the overload protection device is not solid,
When an external force is applied, the input pin terminal changes in a direction perpendicular to the axis, the contact resistance increases, and Joule heat is generated, thereby increasing the temperature. In the worst case, overheating and burning may occur.

Further, in a refrigerator incorporating a compressor, a water injection insulation test is performed in a state where the refrigerator is covered with an exposed portion such as a power supply connection portion, that is, a cover. This is because rainwater infiltration when installed outdoors and water infiltration due to floor cleaning even indoors have not been taken into consideration due to insulation deterioration.

A first object of the present invention is to form a cover for accommodating an overload protection device for a motor and a terminal block for arranging a cord connection terminal separately to facilitate removal and installation of screws. An object of the present invention is to provide a hermetic electric compressor including a power supply device capable of improving workability by ensuring reliability.

A second object of the present invention is to provide an insulating wall for providing insulation between the cord connection terminal and the ground terminal by providing a ground terminal on the outer shell of the hermetic electric compressor in proximity to the cord connection terminal. It is an object of the present invention to provide a hermetic electric compressor provided with a power supply device that can be shared and that can be downsized.

A third object of the present invention is to provide a power supply device in which a plurality of cord stoppers are provided on a terminal block so that even when an external force such as tension is applied to an external lead cord, the external force does not directly affect the terminal portion. To provide a hermetically-sealed electric compressor provided with the same.

A fourth object of the present invention is to provide a hermetic electric compressor having a power supply device capable of detachably mounting a cover for accommodating an overload protection device and a terminal block cover without using a special tool. Is to do.

A fifth object of the present invention is to provide a hermetic electric compressor having a detachable power supply device which is firmly fixed to the power supply device with a holding spring.

A sixth object of the present invention is to provide a hermetic electric compressor equipped with a power supply device for improving drainage from a cover for accommodating an overload protection device and preventing deterioration of insulation of a terminal block. Is to provide.

A seventh object of the present invention is to provide a refrigerator in which a hermetic electric compressor provided with a power supply device is incorporated, wherein a failure of the hermetic electric compressor is easily diagnosed or a power cord is easily attached and detached. Is to provide.

[0022]

SUMMARY OF THE INVENTION The first object of the present invention is to accommodate an overload protection device for a motor in a cover having an open surface, and to open one side of the open cover outside the hermetic electric compressor. In a hermetic electric compressor provided with a power supply device having a terminal block attached to a shell and arranging a cord connection terminal and a terminal block cover covering the terminal block, another terminal adjacent to one surface of the open cover is provided. This is achieved by providing an opening on one surface, providing a terminal block for disposing a cord connection terminal separately from the cover, and detachably attaching the terminal block to the opening of the cover by a slide fitting mechanism. .

A second object of the present invention is to store the overload protection device for the electric motor in a cover having an open surface, attach one surface of the open cover to the outer shell of the hermetic electric compressor, and connect a cord. In a hermetic electric compressor equipped with a power supply device having a terminal block for arranging terminals for terminal and a terminal block cover for covering the terminal block, a terminal block for arranging a cord connection terminal is provided separately from the cover. An earth terminal is provided on the outer shell of the hermetic electric compressor at a position close to the cord connection terminal, and an insulating wall for insulating the earth terminal from the overload protection device housed in the cover and the cord connection terminal is provided. This is achieved by forming on the terminal block.

A third object of the present invention is to store the overload protection device for the electric motor in a cover having an open surface, attach one surface of the open cover to the outer shell of the hermetic electric compressor, and connect a cord. In a hermetic electric compressor equipped with a power supply device having a terminal block for arranging terminals for terminal and a terminal block cover for covering the terminal block, a terminal block for arranging a cord connection terminal is provided separately from the cover. An earth terminal is provided on the outer shell of the hermetic electric compressor at a position close to the cord connection terminal, and an insulating wall for insulating the earth terminal from the overload protection device housed in the cover and the cord connection terminal is provided. This is achieved by forming on the terminal block and providing a cord stop on the terminal block.

A fourth object of the present invention is to store the overload protection device for the electric motor in a cover having an open surface, attach one surface of the open cover to the outer shell of the hermetic electric compressor, and connect the cord. In a hermetic electric compressor equipped with a power supply device having a terminal block for arranging terminals for use and a terminal block cover covering the terminal block, an opening is provided on another surface adjacent to one surface of the open cover. A terminal block for arranging a cord connection terminal is provided separately from the cover, and the terminal block is removably attached to an opening of the cover by a slide fitting mechanism, and a terminal block cover is fitted to the cover. This is achieved by removably attaching by.

A fifth object of the present invention is to store the overload protection device for the electric motor in a cover having an open surface, attach one surface of the open cover to the outer shell of the hermetic electric compressor, and connect the cord. In a hermetic electric compressor equipped with a power supply device having a terminal block for disposing terminals for terminal and a terminal block cover for covering the terminal block, the compressor is fixed with a holding spring surrounding the cover for accommodating the overload protection device, This is achieved by rotatably attaching both ends of the press spring to a press spring engaging portion provided on the outer shell of the hermetic electric compressor.

A sixth object of the present invention is to store the overload protection device for the electric motor in a cover having an open surface, attach one surface of the open cover to the outer shell of the hermetic electric compressor, and connect the cord. Closed electric compressor provided with a power supply device having a terminal block for arranging terminals for use and a terminal block cover for covering the terminal block, wherein a cover for accommodating an overload protection device in an outer shell of the closed electric compressor. Is fixed, a drain hole is formed in the bottom of the mounting bracket in the cover for accommodating the overload protection device, and an opening is formed on another surface adjacent to one surface of the opened cover. The terminal block is provided separately from the cover, and the terminal block is detachably attached to an opening of the cover by a slide fitting mechanism.

The seventh object is to store the overload protection device for the electric motor in a cover having an open surface, attach one surface of the open cover to the outer shell of the hermetic electric compressor, and connect the cord. A refrigerator incorporating a hermetic electric compressor having a power supply device having a terminal block for arranging terminals for use and a terminal block cover for covering the terminal block, wherein an opening is provided on another surface adjacent to one surface of the open cover. A terminal block for disposing a cord connection terminal is provided separately from the cover, and the terminal block is removably attached to an opening of the cover by a slide fitting mechanism, and the terminal block cover is attached to the cover. This is achieved by removably attaching by a fitting mechanism and attaching a hermetic electric compressor such that the cord connection terminal of the terminal block is on the back side of the refrigerator.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hermetic electric compressor equipped with a power supply device of the present invention will be described with reference to FIGS.

FIG. 1 is a front view of a hermetic electric compressor provided with a power supply device, FIG. 2 is a sectional plan view taken along line AA of FIG. 1, FIG. 3 is a right side view taken along line BB of FIG. Is an enlarged view of a main part of FIG. 3,
5 is a left side view of FIG. 1, FIG. 6 is a front view of FIG. 1 from which a terminal cover is removed, FIG. 7A is an enlarged view of a principal part taken along the line CC of FIG. 6, and FIG. FIG. 8 is an enlarged view of an essential part of section D,
9 is a front view in which the power supply device is removed from FIG. 9, FIG. 9 is a front view in which the pressing spring and the ground terminal are removed from FIG. 8, and FIG.
11, FIG. 11 is a partially omitted bottom view of FIG. 1, FIG. 12 is an exploded perspective view of FIG. 1, FIG. 13 is a front view of the power supply device, and FIG. 15 is a left side view of FIG. 13, FIG. 16 is a partial cross-sectional plan view of FIG. 13, FIG. 17 is an enlarged perspective view of an essential part of a cord connection terminal fixing portion of a terminal block, FIG.
8 is an enlarged sectional view showing another embodiment of the mounting mechanism of the terminal block, FIG. 19 is an enlarged bottom view of the cord stopper, and FIG.
9 is a sectional view taken along the line EE of FIG. 9, FIGS.
Is a partially enlarged perspective view showing a fixing portion of the cover and the terminal block cover, and FIG. 27 is an explanatory view of removing the terminal block cover.

In FIG. 1, reference numeral 1 denotes a hermetic electric compressor, and 2 denotes an input pin terminal (see FIG. 1) for supplying electric power to an electric motor (not shown) protruding from an outer shell 3 of the hermetic electric compressor 1. 10). Reference numeral 4 denotes a mounting bracket, a part of which is fixed to a flat surface 3a provided around the input pin terminal 2 of the outer shell 3 of the hermetic electric compressor 1 by a method such as projection welding. A pair of presser spring locking portions 4b rising from the flat surface 4a of the mounting bracket 4 are provided facing each other in the up-down direction surrounding the bracket. The presser spring engaging portion 4b is stepped in the middle thereof, and the distal end side opposing portion 4b is bent.
The interval of c is set to be larger than the interval of the root-side facing portion 4d. Further, a hole 4e for mounting and locking a pressing spring 5 described later is provided in the distal end side opposing portion 4c.

Further, a ground terminal mounting portion 4f is provided at a right side position intersecting the pair of pressing spring locking portions 4b in a direction perpendicular to the pair. The ground terminal mounting portion 4f rises from the flat portion 4a so as to surround the input pin terminal 2, similarly to the press spring retaining portion 4b. This launch surface 4
The lower end of the g is protruded and bent upward, and a rising surface 4g is provided with a female screw 4i for attaching and fixing a ground terminal 6 described later. A relief hole 4j for the screw 7 for the ground terminal to be screwed is provided.

Reference numeral 6 denotes a ground terminal, which has a surface shape along the rising surface 4g and the step bending surface 4h of the ground terminal mounting portion 4f, and has an idiot hole at a position corresponding to the female screw 4i provided on the rising surface 4g. 6a is open. A pair of tab terminals 6b are provided on both sides of the fool hole 6a so as to surround it.

At a position corresponding to the relief hole 4j on the step bending surface 4h, a female screw 6c for connecting and fixing a terminal portion of the ground cord is provided.

The ground terminal 6 is located at a position closest to the outer shell 3 of the hermetic electric compressor 1, and is connected to a terminal block 1 described later.
It is provided side by side with the cord connection terminal 11 fixed side by side with 0.

Further, the ground terminal 6 is connected to the terminal block 10.
Is attached to the cover 9, and when this assembly is attached and fixed to the hermetic electric compressor 1, the ground terminal mounting portion 4f and the ground terminal 6 are positioned within the entire projected area in both the vertical, horizontal, and height directions of the terminal block 10. It is arranged to be located.

The ground terminal 6 thus configured is connected to the female screw 4 provided on the rising surface 4g of the ground terminal mounting portion 4f by the ground terminal fixing screw 8 through the pit 6a.
i.

The ground cord is usually connected to the ground terminal 6.
Is screwed and fixed to the female screw 6c provided in the above using a ground screw 7, and is guided to the ground portion.

Further, from the part which needs to be grounded on the side of the product body such as a refrigerator, the cord connected to that part is connected to the tab terminal 6b of the ground terminal 6, and grounded via this tab terminal 6b.

Reference numeral 5 denotes a pressing spring, which is formed from a wire rod made of an elastic material. Both ends 5a are bent substantially at a right angle in the same direction, and the tips of the both ends 5a are hooked portions bent inwardly toward each other. 5b is provided. The hook portion 5b is provided at the front end side facing portion 4 of the mounting bracket 4 described above.
The hole 4e is rotatably inserted and locked in the hole 4e. Also, both end portions 5a are attached so as to surround the distal end side opposing portion 4c.

Reference numeral W denotes a power supply device, in which the hermetic electric compressor 1 is incorporated into a product such as a refrigerator, and when this product is viewed from the back, a front position wall 9a of a cover 9 made of a thermoplastic synthetic resin.
An opening 9b is formed in the inner space formed by fitting and slidingly fixing an outer peripheral portion 10a of a terminal block 10 made of a thermoplastic synthetic resin along a concave rail 9c provided at an edge of the opening 9b. And an overload protection device P (see FIG. 12).

It should be noted that a concave rail may be provided on the outer peripheral portion 10a of the terminal block 10 and the edge of the opening 9d of the cover 9 may be fitted into the concave rail by a reverse slide fitting method.

The power supply device W will be described in more detail.
A pressing spring fixing portion 9d is provided on the left side surface of the cover 9, that is, on the ceiling position of the cover 9, and the pressing spring 5 is rotated and locked to the pressing spring fixing portion 9d by rotating the pressing spring 5 from the rear to the front. It is pressed and fixed in the direction of the outer shell 3 of the hermetic electric compressor 1 by force.

In this embodiment, the cover 9 is pressed and fixed on the flat surface 4a of the mounting member 4.

Further, a plurality of cord connection terminals 11 are provided side by side on the inner and outer surfaces of the terminal block 10, and a power cord, a temperature controller, etc. are provided on the external terminals 11a located on the outer side of the terminal block 10. Is connected to the terminal block 10
A cord wired to the starting device S and the overload protection device P can be connected to the internal terminal 11b located on the inner side of the device.

Further, a plurality of cord fixing parts 10b are arranged in parallel below the external terminal 11a on the outer surface side, and each of the cord fixing parts 10b has a cord fixing part 10b.
And 13 are screwed by a self-tapping screw 14.

Here, the terminal block 10 and the cord connection terminal 1
More specifically, the cord connection terminals 11 are provided side by side in the left-right direction, and insulating walls 10c are provided between the cord connection terminals 11 and at both ends.

There is a height difference between the upper surface 10d and the lower surface 10e of the terminal block 10. That is, the upper surface 10d is set lower and the lower surface 10e is set higher. Top side 10
An opening hole 10g having an arbitrary size and shape is provided at a portion corresponding to the inner side terminal 11b of the cord connection terminal 11 at a position corresponding to the outer side terminal 11a at a lower surface side 10e. 10h are provided.

A concave hole 10 is located at an arbitrary position below the blind hole 10h and opposite to the cord connection terminal 11.
k is provided.

On the other hand, the cord connection terminal 11 is formed on the upper surface 10 d divided by the step 10 f of the terminal block 10.
The internal terminal internal thread 11c is provided at an arbitrary position corresponding to the opening hole 10g provided in the internal terminal 11b to form the internal terminal 11b. A pair of tab terminals 11d are provided on both sides of the internal terminal female screw 11c so as to surround the internal terminal female screw 11c.
0 and is provided in the outer surface side direction, and forms a part of the external terminal 11a.

The blind hole 1 on the lower surface 10e of the terminal block 10
At a position corresponding to 0h, an external terminal female screw 11e is provided to form another external terminal 11a.

Further, the cord connection terminal 11
Above the tab terminal 11d, a pair of projecting portions 11f wider than the opposing external dimensions of the pair of tab terminals 11d are provided, and a pair of projecting portions 11g similar to both sides of the external terminal female screw 11e are provided. Is provided.

The protrusions 1f are provided on the insulating wall 10c of the terminal block 10 corresponding to the protrusions 11f and 11g.
1f, 11g, and a terminal receiving portion 10 for preventing the cord connection terminal 11 from floating from the terminal block 10.
i and 10j are provided according to the shapes and dimensions of the projecting portions 11e and 11g.

When the cord connection terminal 11 is slid along the surface of the upper surface 10d of the terminal block 10, the terminal receiving portions 10i and 10j are provided with the projecting portions 11f and 11g.
Are arranged in a direction perpendicular to the insulating wall 10c so as to overlap with the terminal receiving portions 10i and 10j.

That is, the terminal receiving portions 10i and 10j are insulated so that a space slightly larger than the thickness of the cord connection terminal 11 is provided between the upper surface 10d and the lower surface 10e where the insulating wall 10c is continuous. It is a projection or a depression provided on the wall 10c. As shown in FIG. 17, the former representative example formed by the convex portion is the terminal receiving portion 10i, and the latter representative example formed by the concave portion is the terminal receiving portion 10j.

The cord connection terminal 11 is prevented from slipping in the opposite direction to the slide terminal by the blind hole 10 of the terminal block 10 described above.
A concave hole 10k is provided at a position below h, and the protrusions 11h on the slide surface side of the cord connection terminal 11 can be prevented by a mounting mechanism in which they are engaged with each other.

In this mounting mechanism, for example, as shown in FIG. 18, a convex portion 10L may be provided on the terminal block 10 side, and a concave hole 11i or a simple hole 11j may be provided on the corresponding cord connecting terminal 11 side. It does not depend on the combination structure, shape, and position. In short, any means can be used as long as it is easy to attach, and a large frictional resistance acts between the two without using other parts. Will be.

Next, the terminal block 10 and the cord stoppers 12 and 1
3, the cord fixing portion 10b provided on the terminal block 10 is entirely surrounded by a wall 10m.
At an arbitrary position surrounded by the wall 10m, a plurality of screw fastening bosses 10n are provided. The screw fastening bosses 10n are separated by partition walls 10p at arbitrary positions.

In this embodiment, one of the screw fastening bosses 10 is used.
A concave opening 10q is arranged in both left and right and up and down directions with n as a center, and a concave opening 10q is arranged in the other screw fastening boss 10n only in the left and up and down directions. That is, a total of three sets of concave openings 10q are formed on the peripheral vertical facing surfaces of each screw fastening boss 10n as a pair.
Are formed.

The depth of the concave opening 10q in the depth direction of the wall 10m is set different from the tip of the screw fastening boss 10n, with the upper part being deeper and the lower part being shallower.

On the other hand, the cord stopper 12 has a bottomed cylindrical portion 12a which can be fitted around the above-mentioned screw fastening boss 10n, and extends the bottom 12b side of the bottomed cylindrical portion 12a in both directions. The peripheral direction is surrounded by a wall 12c.

The cord stopper 13 has a bottomed cylindrical portion 13a which can be fitted around the screw fastening boss 10n, and only one of the bottomed cylindrical portion 13a is extended on the bottom 13b side. The surroundings are surrounded by a wall 13c.

Each cord stopper 12 and cord stopper 1
3 is the same as the above-described wall 1 of the cord fixing portion 10b.
It has a dimensional relationship that can be stored in a space defined by 0 m and the partition wall 10p.

The cord stopper 12 is attached to the left screw fastening boss 10n, and the cord stopper 13 is attached to the right screw fastening boss 10n.

At this time, the respective cord stoppers 12 and 13
The bottomed cylindrical portions 12a and 13a are provided with threaded holes 12d and 13d, and the self-tapping screw 14 is inserted into the threaded holes 12d and 13d and screwed into the screw fastening boss 10n described above. A female screw portion is formed and can be integrated with the terminal block 10.

Also, the cord stopper 12 and the cord stopper 13
The height dimension of the walls 12c and 13c provided on the bottom 1
Based on the surface of the 2b bottom 13b which is in contact with the screw fastening boss 10n, as shown in FIG. 19, the deep recess 10q 'corresponds to the deep recess 10q' and the shallow recess 10q "of the recessed opening 10q. The side walls 12c 'and 13c' are high, and the side walls 12c "and 1 corresponding to the shallow recess 10q".
3c "is low. That is, the concave 10q 'and the walls 12c' and 13c 'and the concave 10q" and the walls 12c "and 13c" are combined.

When these cord stoppers 12 and 13 are assembled to the above-mentioned cord stopper fixing portion 10b, the positions where the tips of the screw fastening portion bosses 10n and the bottoms 12b and 13b of the cord stoppers 12 and 13 are in contact with each other. Stop. At this time, the recess 10q ', the wall 12c', and the wall 13c '
An arbitrary space is provided between Oq "and the walls 12c" and 13c ". The minimum size of this space is smaller than the outer size of one cord, and the space formed in both the upper and lower directions is substantially the same. The dimensions are determined.

When the cord stoppers 12 and 13 thus configured are tightened through a cord as shown in FIG. 20, the cord has two concave portions 10q 'in the horizontal direction and the wall 1
2c 'and 13c' or the recess 10q "is pressed against the end faces of the walls 12c" and 13c ". At this time, the position where the cord is pressed is a stepped engagement form in the horizontal direction of the cord.

Further, one end of an arbitrary space between the cord connection terminals 11 on the lower surface 10e of the terminal block 10 is surrounded by an insulating wall 10c, and one end thereof is connected to the cord fixing portion 10b.
A plurality of cord through-holes 10r reaching the wall 10m of FIG. 22 are provided with a phase-separated start, a capacitor Cr operation method shown in FIG.
24, the capacitor Cs starting method shown in FIG. 24, the capacitor Cs operating method, etc.
When s and Cr are connected and used, consideration is given to the insufficiency of the internal terminals 11b and the external terminals 11a provided on the terminal block 10 and the inability to connect the cord to the starting device S.

That is, the cord connected between the capacitors Cs and Cr and the starting device S enters and exits through the cord through hole 1.
0r, and all incoming and outgoing cords are fixed by the cord stoppers 12 and can be pulled out.

As a result, a single power supply device W can cope with all the starting methods, and in an actual product, for example, as shown in FIG. In the embodiment, the cord stopper 12 is used.
It is assumed that the power cord and the internal wiring cord are fixed to one or both sides having the concave openings 10q on both sides of the cord stopper 12, and the ground cord is fixed to the side having the concave openings 10q on one side of the cord stopper 12. I have.

As a result, even if the ground cord is moved due to a tensile force applied to the power cord or the like, the ground cord is not moved at the same time by the influence of the other cords. We can propose extremely reliable cord stoppers.

In the present embodiment, the cord connection terminal 1
A power cord is generally connected to the first external terminal female screw 11e. At this time, the power supply cord can pass through the gap formed by the cord fixing part 10b, the cord fixing 12 and the cord fixing 13 in a substantially horizontal state. That is, the deep depression 10 of the concave opening 10b
q ′ is provided with a step substantially equivalent to the plate thickness of the cord connection terminal 11 between the lower surface 10 e of the terminal block 10 and the surface thereof.

As a result, an unreasonable force is not applied to the power cord to be connected, and the space between the external terminal female screw 11e and the cord fixing portion 10b can be designed with the minimum necessary size. There is an effect that can be done.

Further, the internal terminal female screw 11c provided in the cord connection terminal 11 is disposed in a portion which becomes an invalid space of the tab terminal 11d, thereby improving material removal of the cord connection terminal 11 itself. In addition, the projection area of the terminal block 10 can be reduced accordingly.

In this method, the ground terminal 6 is also employed, which is the basis for obtaining a small and lightweight terminal block even if all terminals are juxtaposed on the same surface.

Next, the cover 9 will be described in detail. The cover 9 incorporates the power supply device W into a product such as a refrigerator as described above.
Is provided with an opening 9b, and a concave rail 9c is provided in the edge 3 direction of the opening 9b. Further, a pair of hook-shaped convex portions 9f are provided on the outer surface side of the cover 9 at the edge 9e forming the facing concave rail 9c. The direction of each hook is formed so as to face outward with respect to the opening 9b.

The hook-shaped convex portion 9f provided on the upper side in the vertical direction is located at a position corresponding to the center of the upper side wall surface 15a of the terminal block cover 15 described later, and the hand-shaped convex portion of the hook provided on the lower side is provided. Part 9
f indicates that when the cover 9 and the terminal block 10 are fitted and fixed,
Screw fastening boss 10 provided on the cord fixing portion 10b
n lower positions.

Further, a pair of convex wall surfaces 9i are formed on the outer surfaces of the upper surface 9g and the lower surface 9h of the cover 9 so as to surround the outer peripheral surface of the width of the holding spring retaining portion 4b of the mounting bracket 4.
Is provided. The height dimension of the projection wall surface 9i is substantially similar to the thickness of the mounting bracket 4.

The holding spring locking portion 9d provided at the ceiling position of the cover 9 has a semicircular shape, and is provided in a pair in the upward and downward directions when the holding spring 5 is mounted and locked. A concave groove 9j larger than the diameter of the presser spring 5 for storing and fixing the presser spring 5 is provided in the semicircular center portion.

A removable tool receiving portion 9k for the holding spring 5 is provided on the ceiling surface of the center cover 9 between the pair of holding spring engaging portions 9d.

In the interior space of the cover 9, positioning and mounting members for the starting device S and the overload protection device P are formed integrally with the cover 9.

The starting device S is fixed by an internal rib so that the socket terminal of the starting device S matches the input pin terminal 2 of the hermetic electric compressor 1, and the overload protection device P is located below the starting device S. The flat surface 4a of the mounting member 4 and the heat receiving portion thereof are in contact with each other at the position and are fixed by the same method as that described in Japanese Patent Application Laid-Open No. 61-35593, so that the description thereof will be omitted.

The present embodiment is different from that described in the above publication in that the upper surface wall 9g and the lower surface wall 9h of the cover 9 come into contact with the root facing surface portion 4d provided on the holding spring locking portion 4b of the mounting bracket 4. In addition to restricting free movement of the cover 9 in the upward and downward directions, a pair of convex wall surfaces 9i provided on the outer surface side of the upper surface wall 9g and the lower surface wall 9h and a root side provided on the pressing spring locking portion 4b. In order that the outer peripheral surface of the plate width of the facing portion 4d may be abutted to restrict free movement of the cover 9 in the left-right direction, the respective dimensions are determined based on the socket terminal of the starting device S and the input pin terminal 2 on the mounting basis. That is stipulated.

Therefore, the mounting bracket 4 serves as a guide when the cover 9 is mounted, and the mounting bracket 4 receives external force applied to the cover 9, so that the mounting workability is good, and It can be excellent in strength.

As a result, the terminal block 1 integrated with the cover 9
Attaching and detaching work of the cord connection terminal 11 and the cord stopper 12 can be performed without any trouble even when the power supply device W is attached to the hermetic electric compressor 1.

Further, since the cover 9 has the above-described structure, no undercut molding portion is generated, and a mold used for molding can be coped with a generally used two-way opening structure. As a result, the mold can be manufactured at low cost. Also,
The undercut-less method has a simple mold structure, and has the effect of reducing mold maintenance and inspection and extending mold life.

Next, the terminal block cover 15 will be described in detail.
The terminal block cover 15 has a box shape, and the opening end face 15b has a cover 9.
Is arranged so as to abut the edge of the opening 9 b provided in the terminal block 10 and cover the entire area exposed from the cover 9 of the terminal block 10.

That is, it includes a cord connection terminal 11 attached to the terminal block 10 and cord stoppers 12, 13.
The ground terminal 6 within the projected area of the terminal block 10 and all the cords wired within this range are covered with the terminal block cover 15.

The terminal block cover 15 has a lower side wall surface 15 facing a plurality of concave openings 10c provided in the cord fixing portion 10b of the terminal block 10 among the four directions of the wall surface.
In c, a plurality of cord outlets 15d are provided at positions corresponding to the concave openings 10q.

Further, the lower side wall surface 15c of the terminal block cover 15
Inner wall surface 15c 'located below the screw fastening boss 10n of the terminal block 10 and the upper surface side wall surface 1 facing the inner wall surface 15c'
The inner wall surface 15a 'located at the center of 5a is provided with a key hole 15e for hooking and fixing a pair of hook-shaped convex portions 9f provided at the edge 9e of the opening 9b of the cover 9 described above.

The keyhole 15e is provided between the inner wall surfaces 15a 'and 15a'.
lateral hole orthogonal to c ′ and outer wall surface 15 of wall surfaces 15a and 15c
A double wall 15f is provided on each of the a ″ and 15c ″ sides, and the cavity 15g formed by the double wall 15f, that is, the vertical hole communicates with the horizontal hole.

In order to prevent the lateral hole from being undercut during the injection molding of the terminal block cover 15 and the mold structure becoming complicated, one example of the lateral hole is the action of the double wall 15f as shown in FIG. Formed by the effect.

As a result, the mold can have a simple two-way opening structure which is generally used, and can be inexpensive. Further, the molding cycle is not long, and the molding cost of the molded product can be supplied at a low price.

In order to attach the terminal block cover 15 configured as described above to the cover 9, the keyhole 1 provided on the terminal block cover 15 is provided.
What is necessary is just to fit and lock 5e and the hand-shaped convex part 9f of the hook provided in the cover 9. During the fitting, in relation to the pitch dimension between L ₂ of the pitch dimension between L ₁ and key 15e of the hook of the hand-like protrusions 9f, L ₂ <this kind of locking mechanism that L ₁ and becomes part exists It is common sense when providing.

[0096] In this embodiment, it hooks hand-shaped protrusions 9f side or keyhole 15 when passing a large L ₁ parts than L ₂
Displacement will occur on any of the e sides. In the present embodiment, a lock mechanism is provided that causes displacement on the wall surfaces 15a and 15c provided with the keyholes 15e, and locks using the restoring force.

Therefore, when it becomes necessary to remove the terminal block cover 15 for some reason, as shown in FIG. 27, the double wall 15f provided on the upper side wall surface 15a of the terminal block cover 15 is used. As shown in FIG. 27, by inserting the tip of a flathead screwdriver into the enclosed cavity 15g and lifting it upward and applying a rotating force to the front at the same time, the lock portion of this portion can be released as described above.

As described above, since the bending of the terminal block cover 15 which is strong in strength and large in displacement can be used, it is compared with the method using the strength and the amount of bending of the hook-shaped convex portion 9f of the hook. Since the degree of freedom in design is wide and the range of material selection is widened, the flame retardancy of the cover 9 and the terminal block cover 15 can be set to, for example, 94-5V of UL standard. This can also lead to improved safety.

Next, the procedure for assembling the power supply device W and the hermetic electric compressor 1 configured as described above will be described.

First, the assembling procedure on the side of the hermetic electric compressor will be described. The ground terminal 6 is fastened and fixed to the female screw 4i provided on the ground terminal mounting portion 4f of the mounting bracket 4 by the ground fixing screw 8.

Next, the hook 5b of the presser spring 5 is inserted into the hole 4e provided in the presser spring engaging portion 4b of the mounting bracket 4 and attached. After the attachment is completed, the presser spring 5 is rotated rearward to the temporary position. The assembling sequence is such that the holding spring 5 is attached first, and even after the ground terminal 6 is attached, the working order does not matter.

Next, the procedure for assembling the power supply apparatus W will be described. The cord connection terminal 11 is slid to a predetermined position on the terminal block 10 and fixed. Thereafter, a terminal portion of a cord for electrically connecting the starting device S and the overload protection device P to a predetermined internal terminal female screw 11c is fastened and fixed with a terminal fixing screw 16. After connecting each cord,
The other end is connected to each terminal of the starting device S and the overload protection device P as defined.

After the completion of the connection work, the outer peripheral portion 10a of the terminal block 10 is fitted and slid along the concave rail 9c of the cover 9, and at the same time, the starting device S, the overload protection device P and the cord are connected to the inside of the cover 9. It is inserted into the space, and each component is fitted and fixed in a predetermined position.

Next, the connection to the external terminal 11a side is entered.
A terminal portion such as a power cord is fixed to a predetermined external terminal female screw 11 e with a terminal fixing screw 16.

The predetermined tab terminal 11d has a cord other than the cord connected to the external terminal female screw 11e,
That is, the receptacle terminal portion of the internal wiring code is fitted and inserted.

These cords are aligned with the specified concave upper opening 10q of the cord fixing portion 10b provided on the terminal block 10, and are fixed by the cord fixing 12 and the self-tapping screw 14, where the power supply device W The preparatory work before mounting the device on the hermetic electric compressor 1 is completed.

Next, an assembling procedure for mounting the power supply device W to the hermetic electric compressor 1 will be described. The housing surface of the starting device S of the cover 9 is aligned with the direction of the input pin terminal 2 and the cover 9 has a convex shape. The entire cover 9 is moved in the direction of the input pin terminal 2 from a space position where the presser spring locking portion 4b of the mounting bracket 4 is accommodated in the space within the wall surface 9i.

The upper wall 9 of the hip 9 at an arbitrary space position
g, the lower surface wall 9h, the convex wall surface 9i, and the root-side facing portion 4b provided on the holding spring retaining portion 4b are in contact with any surface.

In this contact state, the holding spring 5 is rotated in the forward direction along the outer periphery of the cover 9 and is hooked and fixed to the concave upper groove 9j of the holding spring engaging portion 9d provided on the ceiling of the wall 9.

Here, the electrical connection and attachment of the power supply device W to the hermetic electric compressor 1 are completed.

In this state, the terminal portion of the grounding earth cord is fastened and fixed to the female screw 6c of the earthing terminal 6 with the earthing screw 7. Also, if necessary, a receptacle terminal portion of the in-body earth cord is fitted and inserted into the tab terminal 6b to be connected.

It should be noted that the connection work for the ground terminal 6 does not necessarily need to be performed at this stage, but may be performed after the mounting of the ground terminal 6 described in the assembly procedure for the hermetic electric compressor 1 described above. .

After the completion of these wiring operations, the cord portions are aligned in the concave openings 10q corresponding to the cord stoppers 13 of the cord stopper fixing portions 10b provided on the terminal block 10, and the cord stoppers 13 and the self-tapping screws 14 are used. To secure the ground cord.

The exposed charging section of the hermetic electric compressor 1 provided with the power supply device W assembled in this manner is composed of the aforementioned handcuff projection 9f provided on the cover 9 and the keyhole of the terminal block cover 15. The problem is solved by locking the terminal block 15e and covering the terminal block cover 15. At this point, all the assembly operations are completed.

As described above, the ground terminal 6 is also insulated at the same time, and the cord stoppers 12 and 13 are not exposed so that sufficient safety is ensured.

On the other hand, if a service is required, the reverse of the above-mentioned method, that is, the insulating base cover 15 is removed, and if only the power cord is replaced at this stage, the terminal of the power cord is replaced. Loosen and remove the terminal fixing screw that is tightened, and replace with a new power cord.

The starting device S or the overload protection device P
Alternatively, when a failure diagnosis of the hermetic electric compressor 1 is required, the presser spring 5 is
The cover 9 is detached by a method reverse to the mounting, and then rotated backward, and then the cover 9 is moved in a direction opposite to the mounting. At this time, components other than the cover 9 are detached from the cover 9 and remain on the hermetic electric compressor 1 side. This is because the starting device S is connected to the input pin terminal 2 and the terminal block 10 is connected to the starting device S by the connection of the connecting cord to the starting device S and the grounding terminal 6, and to the overload protection device P. This is because the connection cords to the starting device S and the connection cords to the terminal block 10 are connected so as not to fall apart by the connection and shaping effects.

In this state, necessary parts are removed and confirmed or service exchange is carried out. After the work is completed, the cover 9 is put on the cover, and the respective parts are placed in predetermined positions by the connection cord shaping effect and can be restored to the original state. is there.

According to the above-described embodiment, the following effects can be obtained.

When the terminal block is viewed from the back of the refrigerator incorporating the hermetic compressor, when the terminal block is arranged at the front position, the work of connecting the cords to the cord connection terminal and the earth terminal, the work of fixing the cord by the cord fixing, and the terminal block Since all of the attaching and detaching operations of the cover can be performed at the viewable position, the operations are easy and reliable.

Also, by separating and dividing the cover and the terminal block formed by injection molding of synthetic resin, undercut molding can be eliminated unlike the integral molding of the cover and the terminal block. This can simplify the mold structure,
This has the effect of shortening the production period spent on mold production and reducing the production cost. Further, the simplification of the mold production reduces the occurrence of burrs on the molded product, thereby reducing the post-processing cost and extending the mold life.

Furthermore, the performance required for the cover, for example, heat resistance, flame retardancy, the performance required for the terminal block, for example, flame retardancy, tracking resistance, etc. Can be selected.

Therefore, it is possible to arbitrarily select an inexpensive material as the material selection range is expanded, as well as to improve the performance of the entire power supply device, and to reduce the cost in this respect.

In addition, the cord connection between the terminal block and the starting device and the overload protection device can be performed in advance in the state of the terminal block alone, and the uncertain and successful screwing of the screw terminal can be reliably performed.

Further, since the starting device, the overload protection device, and the cord connection completed product to the terminal block can be simultaneously stored in a predetermined position of the cover when the terminal block is fitted with the cover slide, The workability is greatly improved.

Next, by arranging the cord connection terminal and the ground connection terminal side by side, each terminal can be arranged in a space-saving manner. Further, since the insulating wall between the terminal for cord connection and the terminal for ground connection can be formed by the insulating wall provided on the terminal block, there is an effect that a member having excellent insulation performance can be provided in a small size and at low cost without increasing the number of components.

[0127] Similarly, the hermetic electric compressor provided with a power supply device is also insulated from the starting device and the overload protection device housed in the cover and the ground terminal by an insulating wall integrally provided on the terminal block. Can be

In addition, the cords connected to the cord connection terminal and the ground terminal can be fixed by using a plurality of cord stoppers provided on the terminal block by using arbitrary cord stoppers. Since there is no need to provide them, it is possible to reduce the size and weight with good work efficiency.

Next, in fixing the terminal for connecting the cord to the terminal block, the terminal for connecting the cord is fixed by simply sliding the terminal for connecting the cord to the terminal block, unlike the case of fixing the terminal for connecting the cord to a rivet or the terminal itself. Since it can be performed reliably, equipment such as an air press for caulking fixing and a caulking jig as in the former case is not required.

The cord connection terminals provided on both inner and outer surfaces of the terminal block are provided with an opening hole of the terminal block provided on one female screw side, a tightening direction of a male screw passing through the opening hole and tightening the other female screw. By tightening a male screw on the side from the opposite direction, a common cord connection terminal can be used.

Further, a pair of tab terminals are arranged on the female screw side corresponding to the opening hole of the terminal block of the cord connection terminal on the outer surface side of the cover in a direction perpendicular to the sliding direction of the cord connection terminal surrounding the female screw. , Screws and tabs can minimize the terminal space in this portion.

As a result, the cord connection terminal and the ground terminal can be reduced in size, which can greatly contribute to the reduction in the size and weight of the terminal block in which a large number of these terminals are arranged.

Next, since the terminal block cover covers all the cord connection terminals, the ground terminal, and the cord stopper, the terminal block cover does not expose not only the charged part but also the cord stopper fixing screw part. Thus, a hermetic electric compressor equipped with an excellent power supply device can be obtained.

The terminal block cover is attached and detached by attaching the terminal block cover to a locking portion provided on another member (cover or terminal block) that has moved the terminal block cover substantially horizontally. It is only necessary to fit and fix the provided locking portion, and the mounting operation is completed without any special tool. Further, after the fitting and fixing, the key action between the locking portions does not allow the hermetic electric compressor to withstand the vibration at the time of starting and stopping the operation, and the vibration and shock applied at the time of transporting the product.

Conversely, at the time of removal, the tip of the driver is inserted into a hole or a groove provided outside the vicinity of the locking portion of the terminal cover, and one of the engaging portions is utilized by utilizing the plastic deformation (elasticity) of the wall surface of the terminal cover. After releasing the fitting state of the stop portion, the releasing operation is completed by releasing the fitting state of the other locking portion with bare hands.

Accordingly, the terminal block cover has good mounting workability and can be removed without using a special tool, so that not only mass productivity but also excellent serviceability can be achieved.

Further, even if a shortage of the cord connection terminals provided on the terminal block occurs due to various starting methods and various control methods, the cord is directly connected to the terminals of the starting device or the overload protection device. After the cord is pulled out to the outside through the elongated hole provided in the terminal block, it can be fixed using the cord stopper, so that one power supply device can be used for all purposes.

As a result, there is no need to use various types of power supply devices properly, and confusion in the production line due to erroneous assembly can be prevented beforehand, and the economic effects of productivity improvement such as rationalization are invaluable.

Further, the one which conforms to the IEC standard and is suitable for the purpose of use can be reduced in size and weight and inexpensive, and can be easily and easily provided with excellent reliability and safety.

FIG. 28 shows another embodiment of the hermetic compressor.
(A) is a partial cross-sectional view taken along the line EE of FIG.
FIG.

Two drain holes 4k are provided at the bottom of the mounting brackets 4 on both the left and right sides of the overload protection device P in the range inside the cover 9 for housing the starting device and the overload protection device.

According to the present embodiment, for example, even if rainwater or water enters the cover during cleaning, the water is discharged outside the cover, so that there is an effect that a decrease in insulation can be prevented.

FIG. 29 is a rear view of the refrigerator incorporating the hermetic compressor.

A machine room 18 is provided at the lower bottom of the rear of the refrigerator 17.
A hermetic electric compressor is mounted in the machine room 18 such that the cord connection terminal 10 (see FIG. 4) is on the rear side of the refrigerator 17. 19 is a door of the refrigerator 17.

According to the present embodiment, it is possible to provide a refrigerator in which the failure diagnosis of the hermetic electric compressor or the attachment and detachment of the power cord is easy.

[0146]

According to the present invention, the cover for accommodating the overload protection device for the electric motor and the terminal block for arranging the cord connection terminals are formed separately. A hermetic electric compressor equipped with a power supply device that can be improved is obtained.

By providing an earth terminal on the outer shell of the hermetic electric compressor in the vicinity of the cord connection terminal, a common insulating wall for insulating the cord connection terminal from the earth terminal can be used to reduce the size. A sealed electric compressor equipped with a power supply device capable of being obtained is obtained.

Even when a plurality of cord stoppers are provided on the terminal block and an external force such as tension is applied to the external drawer cord, a sealed electric compressor having a power supply device in which the external force does not directly affect the terminal portion is obtained. Can be

[0149] It is an object of the present invention to provide a hermetic electric compressor having a power supply device in which a cover for accommodating the overload protection device and a terminal block cover can be detachably mounted without using a special tool.

A hermetic electric compressor having a detachable power supply device which is firmly fixed to the power supply device with a restraining spring is obtained.

An object of the present invention is to provide a hermetic electric compressor provided with a power supply device for improving drainage from inside a cover for accommodating an overload protection device and preventing deterioration of insulation of a terminal block.

It is possible to obtain a refrigerator in which the failure diagnosis of the hermetic electric compressor or the work of attaching and detaching the power cord is easy.

[Brief description of the drawings]

FIG. 1 is a front view of a hermetic electric compressor including a power supply device.

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

FIG. 3 is a right side view taken along the line BB in FIG. 1;

FIG. 4 is an enlarged view of a main part of FIG. 3;

FIG. 5 is a left side view of FIG. 1;

FIG. 6 is a front view in which a terminal cover is removed from FIG. 1;

FIG. 7 is an enlarged view of a principal part taken along line CC of FIG. 6;

FIG. 8 is a front view in which the power supply device is removed from FIG.

FIG. 9 is a front view in which a pressing spring and a ground terminal are removed from FIG. 8;

FIG. 10 is a left side view of FIG.

FIG. 11 is a partially omitted bottom view of FIG. 1;

FIG. 12 is an exploded perspective view of FIG.

FIG. 13 is a front view of the power supply device.

FIG. 14 is a right side view, partially in section, of FIG. 13;

FIG. 15 is a left side view of FIG.

FIG. 16 is a partial cross-sectional plan view of FIG.

FIG. 17 is an enlarged perspective view of a main part of a cord connection terminal fixing portion of the terminal block.

FIG. 18 is an enlarged sectional view showing a mounting mechanism of another embodiment of the terminal block.

FIG. 19 is an enlarged bottom view of the cord stopper.

20 is a sectional view taken along the line EE of FIG. 19;

FIG. 21 is a connection diagram of a phase separation starting method.

FIG. 22 is a connection diagram of a phase separation start and capacitor operation method.

FIG. 23 is a connection diagram of a capacitor starting method.

FIG. 24 is a connection diagram of a capacitor start and a capacitor operation method.

FIG. 25 is a connection diagram when used for an actual product.

FIG. 26 is a partially enlarged cross-sectional perspective view showing a fixing portion between a cover and a terminal block cover.

FIG. 27 is an explanatory view of removing a terminal cover.

FIG. 28 is a partial sectional view of another embodiment of the hermetic compressor.

FIG. 29 is a rear view of the refrigerator incorporating the hermetic compressor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hermetic type electric compressor, 2 ... Input pin terminal, 3 ... Outer shell, 4 ... Mounting bracket, 4a ... Flat surface, 4b ... Holding spring retaining part, 4e ... Hole, 4f ... Earth terminal mounting part, 4g ... Starting surface, 4h ... Step bending surface, 4i ... Female screw, 4j ... Escape hole, 4k ... Water drain hole, 5 ... Holding spring, 5a ... Both ends, 5
b: hook, 6: ground terminal, 6a: stupid hole, 6b ...
Tab terminal, 6c female screw, 7 ground screw, 8 ground terminal fixing screw, 9 cover, 9a front position wall surface, 9
b ... opening, 9c ... concave rail, 9d ... holding spring fixing part, 9e ... edge, 9f ... hook-shaped convex part, 9g ... top wall, 9
h: lower surface wall, 9i: convex wall surface, 10: terminal block, 10a ...
Outer peripheral part, 10b ... cord fixing part, 10c ... insulating wall,
10d: upper surface side, 10e: lower surface side, 10f: step portion, 10
g: opening hole, 10h: blind hole, 10i: terminal receiving part, 10
j: terminal receiving portion, 10k: concave hole, 10p: partition wall,
10q: concave opening, 10l: convex, 10m: wall, 10
n: Screw fastening boss, 11: Cord connection terminal, 11a
... external terminal side, 11b ... internal terminal side, 11c ... female screw for internal terminal, 11d ... tab terminal, 11e ... female screw for external terminal, 11f ... projecting portion, 11g ... projecting portion, 11h ... convex portion, 11i ... concave shape Hole, 11j ... Hole, 12 ... Cord stop,
12a: bottomed cylindrical portion, 12b: bottom, 12c: wall, 12d
... Screw through hole, 13 ... Cord fixing, 13a ... Bottomed cylindrical part, 13c ... Wall, 13d ... Screw through hole, 14 ... Self tapping screw, 15 ... Terminal block cover, 15a ... Top side wall surface, 15b ... End surface, 15c ... lower side wall surface, 15d ... cord outlet, 15e ... keyhole, 15f ... double wall, 15g
... hollow part, 16 ... terminal fixing screw, 17 ... refrigerator, 18
... machine room, W ... power supply device, S ... starting device, P ... overload protection device.

Continuing on the front page (72) Inventor Wataru Sugawara 800, Tomita, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture Inside the Cooling Division, Hitachi, Ltd. (72) Hiromasa Uchida 800, Tomita, Ohira-cho, Shimotsuga-gun, Tochigi F-term in business division (reference) 3H003 AB01 AC03 AD00 CE01 CF02 CF03

Claims (16)

[Claims] 1. An overload protection device for an electric motor is housed in a cover having an open surface, one surface of the open cover is attached to an outer shell of a hermetic electric compressor, and a cord connection terminal is disposed. A sealed electric compressor provided with a power supply device having a terminal block and a terminal block cover covering the terminal block, wherein an opening is provided on another surface adjacent to one surface of the opened cover, and a cord connection terminal is provided. A hermetic electric compressor equipped with a power supply device, characterized in that a terminal block for disposing is provided separately from the cover, and the terminal block is detachably attached to an opening of the cover by a slide fitting mechanism. 2. The slide fitting mechanism according to claim 1, wherein a concave rail is provided on an opening of the cover or an edge of the terminal block, and the edge of the terminal block or the edge of the opening of the cover is slid on the concave rail. A hermetic electric compressor provided with the power supply device according to claim 1, wherein the terminal block and the terminal block are fitted. 3. The power supply according to claim 1, wherein the terminal block is provided with a hole in an insulating space between the cord connection terminals between the cord connection terminals and the cord stopper. Hermetic electric compressor equipped with a device. 4. The hermetic electric compressor equipped with a power supply device according to claim 1, wherein the terminal block has a plurality of cord connection terminals on both sides. 5. The terminal block according to claim 1, wherein a fixing mechanism is provided between an insulating wall formed to insulate adjacent code connection terminals and the code connection terminal, and the terminal board is provided in a direction perpendicular to the terminal surface of the code connection terminal. And a movement mechanism in the direction along the terminal surface of the cord connection terminal by providing a fixing mechanism by unevenness between the terminal block and the cord connection terminal. A hermetic electric compressor provided with the power supply device according to 1. 6. The terminal block according to claim 1, wherein two female screws are arranged on the cord connection terminal, and tab terminals are provided on both terminal surfaces of one of the female screws in a direction perpendicular to the terminal surface. A hermetic electric compressor comprising the power supply device according to claim 1. 7. An overload protection device for an electric motor is housed in a cover having an open surface, and one surface of the open cover is attached to an outer shell of a hermetic electric compressor, and a terminal for connecting a cord is arranged. In a sealed electric compressor including a power supply device having a terminal block and a terminal block cover covering the terminal block, a terminal block for arranging a cord connection terminal is provided separately from the cover, and the cord connection terminal is provided. A ground terminal is provided on an outer shell of the hermetic electric compressor at a position close to the terminal, and an insulating wall for insulating the ground terminal from the overload protection device housed in the cover and the cord connection terminal is formed on the terminal block. A hermetic electric compressor provided with a power supply device. 8. An overload protection device for an electric motor is housed in a cover having an open surface, and one surface of the open cover is attached to an outer shell of a hermetic electric compressor, and a terminal for connecting a cord is arranged. In a sealed electric compressor including a power supply device having a terminal block and a terminal block cover covering the terminal block, a terminal block for arranging a cord connection terminal is provided separately from the cover, and the cord connection terminal is provided. A ground terminal is provided on an outer shell of the hermetic electric compressor at a position close to the terminal, and an insulating wall for insulating the ground terminal from the overload protection device housed in the cover and the cord connection terminal is formed on the terminal block. A hermetic electric compressor provided with a power supply device, wherein a cord stopper is provided on the terminal block. 9. An overload protection device for an electric motor is housed in a cover having an open side, and one side of the open cover is attached to an outer shell of the hermetic electric compressor, and a cord connection terminal is disposed. A sealed electric compressor provided with a power supply device having a terminal block and a terminal block cover covering the terminal block, wherein an opening is provided on another surface adjacent to one surface of the opened cover, and a cord connection terminal is provided. Is provided separately from the cover, and the terminal block is detachably attached to the opening of the cover by a slide fitting mechanism, and the terminal block cover is detachably attached to the cover by a fitting mechanism. A hermetic electric compressor provided with a power supply device. 10. A fitting mechanism of the cover and the terminal block cover, wherein the cover for storing the overload protection device is formed with a pair of bent key-shaped protrusions, and a concave portion engaging with the pair of key-shaped protrusions is formed. The hermetic electric compressor provided with the power supply device according to claim 9, wherein the hermetic compressor is formed on the terminal block cover, and the protrusion and the recess are fitted to each other. 11. An overload protection device for an electric motor is housed in a cover having one open surface, and one surface of the open cover is attached to an outer shell of a hermetic electric compressor, and a terminal for connecting a cord is arranged. A sealed electric compressor provided with a power supply device having a terminal block and a terminal block cover covering the terminal block, wherein an opening is provided on another surface adjacent to one surface of the opened cover, and a cord connection terminal is provided. A terminal block for disposing the terminal block is provided separately from the cover, and the terminal block is detachably attached to an opening of the cover by a slide fitting mechanism, and the terminal block cover is detachably attached to the terminal block by a fitting mechanism. A hermetic electric compressor provided with a power supply device to be attached. 12. A fitting mechanism of the terminal block and the terminal block cover, wherein the terminal block has a pair of bent key-shaped protrusions, and the terminal block cover has a recess formed on the pair of key-shaped protrusions. And
The hermetic electric compressor provided with the power supply device according to claim 11, wherein the convex portion and the concave portion are fitted. 13. An overload protection device for an electric motor is housed in a cover having an open surface, and one surface of the open cover is attached to an outer shell of a hermetic electric compressor, and a cord connection terminal is disposed. In a hermetic electric compressor provided with a power supply device having a terminal block and a terminal block cover for covering the terminal block, the cover accommodating the cover for accommodating the overload protection device is fixed by a presser spring surrounding the terminal block, and both ends of the presser spring. Is hermetically attached to a retaining spring engaging portion provided on an outer shell of the hermetic electric compressor, the hermetic electric compressor having a power supply device. 14. The power supply device according to claim 13, wherein a convex wall surface for guiding a holding spring locking portion is formed on upper and lower outer surfaces of a cover for housing the overload protection device. Hermetic electric compressor. 15. An overload protection device for an electric motor is accommodated in a cover having an open surface, and one surface of the open cover is attached to an outer shell of a hermetic electric compressor, and a terminal for connecting a cord is provided. A sealed electric compressor provided with a power supply device having a terminal block and a terminal block cover for covering the terminal block, wherein a mounting bracket for mounting an overload protection device is mounted on an outer shell of the sealed electric compressor. A drain hole is formed at the bottom of the mounting bracket in the cover for accommodating the overload protection device, and an opening is provided on the other surface adjacent to one surface of the opened cover, and cord connection is performed. A hermetic electric compression provided with a power supply device, characterized in that a terminal block for arranging terminals is provided separately from the cover, and the terminal block is detachably attached to an opening of the cover by a slide fitting mechanism. Machine. 16. An overload protection device for an electric motor is housed in a cover having an open surface, and one surface of the open cover is attached to an outer shell of the hermetic electric compressor, and a cord connection terminal is disposed. In a refrigerator incorporating a sealed electric compressor having a power supply device having a terminal block and a terminal block cover covering the terminal block, an opening is provided on another surface adjacent to one surface of the open cover, A terminal block for arranging connection terminals is provided separately from the cover. The terminal block is removably attached to the opening of the cover by a slide fitting mechanism, and the terminal block cover is attached to and detached from the cover by a fitting mechanism. A hermetic electric compressor equipped with a power supply device, wherein the hermetic electric compressor is mounted so that the terminal for cord connection of the terminal block is on the back side of the refrigerator. Freezing machine.