KR20200087480A - Electric Compressor - Google Patents

Abstract

The present invention relates to an electric compressor. The present invention provides the electric compressor comprising: a main housing having an internal space; a motor which is provided in the main housing and has a stator and a rotor; a shaft coupled to the rotor; a seating unit which is located on one side of the shaft and has a diameter smaller than that of the shaft; a sub-ball bearing slidingly assembled to the seating unit; a hollow unit and a hole provided in the seating unit; and a fixing clasp including a locking unit protruding to the hole and a supporting unit connected to the locking unit and accommodated in the hollow unit, and having own elastic force thereof. An object of the present invention is to provide the electric compressor capable of preventing the shaft from moving in a transverse direction in a sub-ball bearing structure.

Description

Electric Compressor

The present invention relates to an electric compressor, and more particularly, to an electric compressor capable of preventing the crankshaft of the motor from moving in the lateral direction due to vibration.

An electric compressor is a device that compresses a fluid such as a refrigerant using electric energy. An example of an electric compressor is a scroll type compressor. Scroll type compressors can achieve relatively high compression ratios compared to other types of compressors. In addition, the scroll-type compressor can obtain stable torque by smoothly inhaling, compressing, and discharging the fluid. Therefore, scroll-type compressors are widely used for refrigerant compression in air conditioning systems and the like.

The scroll type compressor may include a motor part and a scroll part as a compression mechanism. In addition, an inverter part for controlling the motor part may be included. The motor part includes a stator and a rotor, and the scroll part includes a fixed scroll and a turning scroll.

A crankshaft (hereinafter referred to as a'shaft') is coupled to the rotor of the motor to drive a turning scroll through the shaft. The orbiting scroll is engaged with the stationary scroll to compress the fluid such as refrigerant while performing orbiting motion. Since the shaft is a rotating part, it is supported by bearings to reduce frictional resistance. As bearings, ball bearings and/or journal bearings can be used.

On the other hand, when the compressor is started or operated, vibration in the transverse direction (horizontal direction) may occur in the compressor. Due to the lateral vibration, the shaft of the compressor can move in the lateral direction. However, if the shaft of the compressor moves in the lateral direction, the shaft may move in the lateral direction, and there is a risk of damage due to collision with surrounding parts. Therefore, it is necessary to prevent the lateral movement of the shaft during starting or operation of the compressor. In particular, in the case of a compressor for a vehicle, since vibration occurs when the vehicle is running, the lateral movement of the shaft must be prevented.

The method of preventing the lateral movement of the shaft in the conventional compressor will be described as follows.

As disclosed in US 8202071, there is a method of preventing the shaft from moving in the lateral direction by pressing the shaft of the compressor into the main ball bearing. In this structure, the outer ring of the main ball bearing is pressed into the main frame and the inner ring of the main ball bearing is pressed into the shaft. In this structure, since the shaft is pressed into the main ball bearing, the lateral movement of the shaft is constrained by the main ball bearing. Therefore, even if lateral vibration occurs in the compressor, the shaft does not move in the lateral direction.

On the other hand, there is a structure in which a journal bearing is used as the main bearing and a sub-ball bearing is used on the other side of the journal bearing (hereinafter referred to as a'sub-ball bearing structure' for convenience). In the sub-ball bearing structure, the lateral movement of the shaft is not restricted. The reason for this is as follows.

In journal bearings, the shaft is not press-fitted due to its structure. In addition, in the assembly process of the compressor, the shaft is not pressed into the inner ring of the sub-ball bearing but is slidingly coupled. Therefore, in the journal bearing and the sub-ball bearing, since the shaft is assembled with a predetermined tolerance, the lateral movement of the shaft is not restricted.

As described above, in the compressor of the sub-ball bearing method, there is a fear that the shaft may move in the lateral direction and collide with the surrounding components due to vibration generated when the compressor is started or operated. Accordingly, there is a need for a method of preventing the shaft from moving in the transverse direction due to vibration in a sub-ball bearing compressor.

The present invention is to solve the above-mentioned problems, the object of the present invention is to provide an electric compressor that can prevent the shaft from moving in the transverse direction in the sub-ball bearing structure.

Another object of the present invention is to provide an electric compressor capable of preventing the shaft from moving in the lateral direction without pressing the shaft into the ball bearing.

According to an embodiment of the present invention, the present invention is a main housing having an internal space; A motor provided in the main housing and having a stator and a rotor; A shaft coupled to the rotor; A seating portion located on one side of the shaft and having a smaller diameter than the shaft; A sub-ball bearing slidingly assembled to the seating portion; A hollow portion and a hole provided in the seating portion; It provides an electric compressor including a locking portion protruding into the hole and a supporting portion connected to the locking portion and accommodated in the hollow portion, and including a fixing clasp having its own elastic force.

According to an exemplary embodiment, the length and width of the locking portion correspond to the length and width of the hole, and at least a portion of the locking portion preferably protrudes from the hole.

According to an exemplary embodiment, it is preferable that the upper portion of the locking portion is inclined downward from front to rear. The height of the front of the engaging portion is greater than the height of the hole, and the height of the rear of the engaging portion may correspond to the height of the hole.

According to an exemplary embodiment, the support portion may include a portion extending forward from the engaging portion. A plurality of the engaging portions are provided, and a plurality of supporting portions extending forward from each of the engaging portions are provided, and the respective supporting portions may be connected to each other in front of the engaging portion.

According to an exemplary embodiment, the other side of the shaft may be rotatably supported by a journal bearing.

According to another embodiment of the present invention, the present invention is a main housing having an internal space; A motor provided in the main housing and having a stator and a rotor; A shaft coupled to the rotor; A seating portion located on one side of the shaft and having a smaller diameter than the shaft; A sub-ball bearing slidingly assembled to the seating portion; A hollow portion provided in the seating portion; It includes a locking portion and a support portion connected to the locking portion, one side of the locking portion is in contact with the sub-ball bearing, one side of the supporting portion is connected to the locking portion and the other side includes a fixing clasp inserted into the hollow portion An electric compressor is provided.

According to an exemplary embodiment, it is preferable that the engaging portion is inclined downward from front to rear.

According to another embodiment of the present invention, the present invention is a main housing having an interior space; A motor provided in the main housing and having a stator and a rotor; A shaft coupled to the rotor; A seating portion located on one side of the shaft and having a smaller diameter than the shaft; A sub-ball bearing slidingly assembled to the seating portion; It includes a locking portion and a support portion connected to the locking portion, one side of the locking portion is in contact with the sub-ball bearing, one side of the supporting portion is connected to the locking portion and the other side includes a fixing clasp coupled to the outer surface of the seating portion An electric compressor is provided.

According to an exemplary embodiment, it is preferable that the engaging portion is inclined downward from front to rear.

On the other hand, each of the features of the above-described embodiments may be implemented in combination in other embodiments unless contradictory or exclusive to the other embodiments.

The above-described electric compressor according to the present invention has the following effects.

First, according to the present invention, even in the sub-ball bearing method, the lateral movement of the shaft of the motor is effectively restrained. Therefore, even if vibration occurs in the compressor, since the shaft does not move in the lateral direction, the reliability of the compressor is improved.

Second, according to the present invention, there is an advantage that the lateral movement of the motor shaft can be constrained without pressing the shaft into the ball bearing.

1 is a cross-sectional view showing the overall structure of an embodiment of an electric compressor according to the present invention.
2 is a cross-sectional view showing an embodiment of an electric compressor according to the present invention.
3 is an exploded perspective view of FIG. 2.
4 is a cross-sectional view showing the assembly process of FIG. 2.
5 is a cross-sectional view showing another embodiment of an electric compressor according to the present invention.
6 is a cross-sectional view showing another embodiment of an electric compressor according to the present invention.

Hereinafter, preferred embodiments of the electric compressor according to the present invention will be described with reference to the accompanying drawings. Hereinafter, the components and the like of the present invention will be described with reference to specific drawings and examples, but they are used only to help understand the present invention. In addition, in the following embodiments, specific components may be exaggerated or reduced for illustration convenience, and may be illustrated or described, but this is also for understanding the present invention. Therefore, the present invention is not limited to the embodiments or drawings to be described below, and those skilled in the art to which the present invention pertains can make various modifications and variations from these descriptions, and such modifications and variations It is the scope of the present invention.

First, referring to FIG. 1, the overall configuration of a preferred embodiment of the electric compressor according to the present invention will be described. For reference, the solid arrow L in FIG. 1 represents the flow of the refrigerant.

The compressor 1 may include a main housing 2 having an enclosed internal space and an inverter housing 3 coupled to one side of the main housing 2. Various components for compressing a fluid, for example, a motor part and a scroll part, may be installed in the main housing 2. An inverter (not shown) may be installed in the inverter housing 3.

The description of each component is as follows.

The main housing 2 may be formed in the form of a horizontal cylinder. The main housing 2 may be provided with a suction port 222 and a discharge port 242 for entering and exiting the refrigerant. A motor 4 for generating rotational force may be installed in the main housing 2. The motor 4 may include a stator 42 and a rotating rotor 44. The shaft 46 may be coupled to the rotor 44.

The main housing 2 may be provided with a fixed scroll 52 and a turning scroll 54 for compressing the refrigerant. The fixed scroll 52 may be fixed inside the main housing 2, and the orbiting scroll 54 may be eccentrically coupled to the shaft 46 of the rotor 44. The motor 4 may provide a rotational force through which the orbiting scroll 54 orbits through the shaft 46. In addition, the shaft 46 may be provided with a balance weight 462 for canceling the centrifugal force generated by the rotation of the orbiting scroll (54). The balance weight 462 may be installed on the side opposite to the eccentric direction of the shaft 46.

Meanwhile, an oil sump 7 for storing oil may be provided on one side of the main housing 2. An oil separator for separating oil and refrigerant may be provided on the oil sump 7.

Next, the support structure of the shaft 46 will be described.

Hereinafter, for convenience, the part where the scroll parts 52 and 54 are located is referred to as the front of the shaft 46 and the opposite side, that is, the rear part of the motor 4, as the rear of the shaft 46.

The shaft 46 is preferably rotatably supported. For example, the front of the shaft 46 can be supported by the mainframe 26. And to support the shaft 46 rotatably, a main journal bearing 66 may be provided between the shaft 46 and the main frame 26. In addition, a journal bearing 64 may be provided between the shaft 46 and the orbiting scroll 54.

A bearing housing 200 is provided at a rear side of the shaft 46, and a rear side of the shaft 46 may be supported on the bearing housing 200. And to support the shaft 46 rotatably, a sub-ball bearing 100 may be provided between the shaft 46 and the bearing housing 200. Therefore, the frictional resistance is reduced by the journal bearings 64 and 66 and the sub-ball bearing 100 when the shaft 46 rotates.

The assembly structure of the sub-ball bearing 100 and the shaft 46 will be described in detail.

One end (rear) of the shaft 46 is provided with a portion (hereinafter referred to as a'seating portion') 46a on which a sub-ball bearing is seated. The diameter of the seating portion 46a is preferably smaller than the diameter of the shaft 46. Therefore, the stepped portion 46b is provided by a difference between the diameter of the shaft 46 and the diameter of the seating portion 46a. The outer ring of the sub-ball bearing 100 is assembled inside the ball bearing housing 200, and the inner ring of the sub-ball bearing 100 is slidingly assembled to the seating portion 46a.

On the other hand, in the above-described sub-ball bearing structure, the movement of the shaft 46 to the right in the lateral direction is restricted, but the movement to the left of the lateral direction is not restricted. Because, the movement of the shaft 46 to the right in the lateral direction is restricted by the step 46b of the shaft 46 hanging on the front side of the sub-ball bearing 100. On the other hand, the movement to the left of the shaft 46 is because there is no restraint structure.

2 and 3, an embodiment in which the shaft 46 of the motor is prevented from moving to the left in the lateral direction will be described.

A fixed clasp 300 is provided at one end of the shaft 46, and the movement of the shaft 46 to the left in the lateral direction is constrained by the fixed clasp 300.

The fixed clasp 300 is as follows.

The fixing clasp 300 may have a structure that can be folded and unfolded with its own elastic force. For example, the fixing clasp 300 may include a locking portion 330 and a supporting portion 350 connecting the locking portion 330. Preferably, the support part 350 elastically supports the locking part 330.

The seating portion 46a of the shaft 46 may be provided with a hollow portion 462 into which the fixing clasp 300 is inserted and received. In addition, a hole 464 in communication with the hollow portion 462 may be provided in the seating portion 46a of the shaft. The locking portion 330 of the fixing clasp 300 is exposed to the outside of the seating portion 46a through the hole 464 of the seating portion 46a.

Each component will be described in detail.

First, the locking portion 330 of the fixing clasp 300 will be described.

The shape of the locking portion 330 is not limited. The locking portion 330 is sufficient as long as it is at least partially exposed to the outside through the hole 464 of the seating portion 46a.

For example, the length Lh and the width Wh of the engaging portion 330 may correspond to the length L and the width W of the hole 464 of the seating portion 46a. The height of the engaging portion 330 may be such that at least a portion of the engaging portion 330 is exposed to the outer surface of the receiving portion 46a through the hole 464 of the receiving portion 46a.

On the other hand, the upper portion 334 of the engaging portion 330 is preferably inclined downward from front to rear. The inclined surface 334 may be configured as a straight line or a curved line. (The inclined surface is for convenience of assembly and will be described later in detail.) For example, the height H1 of the front 332 of the locking portion 330 Is greater than the height H of the hole 464, and the height H2 of the rear 336 may correspond to the height H of the hole 464.

Next, the support portion 350 of the fixing clasp 300 will be described.

It is preferable that the support part 350 elastically supports the locking part 330. That is, when the support portion 350 is inserted into the hollow portion 462 of the seating portion 46a, it is folded, and after it is inserted, it is preferable that the structure is expanded with elastic force. The support part 350 may have an elastic structure (a kind of plate spring structure) by its shape, and it is also possible to use an elastic material for the material.

The shape of the support portion 350 is not limited, and any shape that performs the above-described functions can be applied. For example, the support portion 350 may include a portion 352 extending forward from the locking portion 330. In addition, when there are a plurality of locking parts 330, each support part 350 may include a connecting part 354 to be connected. (FIG. 2 shows two locking parts) If configured in such a shape, the supporting part 350 is a kind of leaf spring may have an elastic force.

Meanwhile, the material of the fixing clasp 300 is not limited, and iron-based, non-ferrous-based, and polymer materials may be applied as necessary.

Next, the hollow portion 462 and the hole 464 of the shaft seating portion 46a will be described.

The shape of the hollow portion 462 of the seating portion 46a is not limited, and may be any shape that can accommodate the fixing clasp 300, in particular, the support portion 350. In addition, the shape of the hole 464 of the seating portion 46a is not limited, but the shape of the locking portion 330, in particular the length L and width corresponding to the length Lh and the width Wh of the locking portion 330 It is preferable to have (W). The position of the hole 464 is not limited, but it is preferable that the front of the hole 464 approximately coincides with the rear of the sub ball bearing 100.

Referring to Figure 4, the assembly structure of the shaft 46, the sub-ball bearing 100 and the fixing clasp 300 will be described.

First, as shown in Figure 4 (a), the fixing clasp 300 is pushed into the hollow portion 462 of the seating portion 46a. Since the support portion 350 of the fixed clasp has elastic force, when the support portion 350 is narrowed, the fixed clasp 300 is inserted into the hollow portion 462.

As shown in (b) of Figure 4, the fixing clasp 300 is inserted into the hollow portion 462 of the seating portion 46a, the locking portion 330 of the fixing clasp is a hole in the seating portion 46a (464). Then, the locking portion 330 is projected to the outside through the hole 464 by the elastic force of the support portion 350. In this state, the fixed clasp 300 is assembled to the seating portion 46a. The shaft 46 in this state is pushed into the sub ball bearing 100 by sliding.

At this time, as shown in Figure 4 (c), the engaging portion 330 is inclined downward from front to rear. Therefore, while the locking portion 330 of the fixing clasp is naturally pressed, the seating portion 46a of the shaft 46 passes through the inner ring of the sub-ball bearing 100.

As shown in FIG. 4(d), when the seating portion 46a of the shaft passes through the inner ring of the sub ball bearing 100, the locking portion 330 is opened while the locking portion 330 of the fixing clasp is a sub ball bearing It protrudes in the direction of (100). That is, the rear portion of the sub-ball bearing 100 comes into contact with the locking portion 330 of the fixing clasp.

When the assembly is completed in this way, the movement of the shaft 46 to the right in the lateral direction is constrained by the stepped portion 46b of the shaft 46, and the movement to the left in the lateral direction is caused by the locking portion 330 of the fixing clasp. Are bound. Therefore, according to the present embodiment, even when vibration occurs in the compressor, it is possible to effectively restrain the lateral movement of the shaft 46 on the right and left sides.

Meanwhile, in the above-described embodiment, the holes 464 of the seating portion 46a and the locking portions 330 corresponding thereto are illustrated and described two by one. However, this embodiment is not limited to this, and the hole 464 of the seating portion 46a and the corresponding locking portion 330 may be one or two or more. When the number of the locking portions 330 is large, it is preferable to arrange them vertically or horizontally. Even if there is only one locking portion 330, the supporting portion 350 may have substantially the same shape. For example, the support part 350 may be shaped to extend a predetermined length from the front of the locking part 33 and extend a predetermined length back to the rear. In addition, the support portion 350 may be formed to extend only in front of the locking portion 33, and in this case, it is preferable to extend while having a predetermined slope.

5, another embodiment of the compressor according to the present invention will be described.

This embodiment also has the same basic principles as the above-described embodiment. However, in this embodiment, the structure in which the fixing clasp is assembled to the seating portion is different.

In order to avoid the complexity of the description, description will be made focusing on parts different from the above-described embodiment.

The seating portion 46a is provided with a hollow portion 462. In addition, an assembly hole 468 may be provided inside the hollow portion 462. However, in this embodiment, the hole through which the locking portion protrudes from the seating portion 46a need not be provided.

The fixing clasp 300a may include a locking portion 330a and a supporting portion 350a. An assembly hole 358 may be provided in the support part 350a. The shape of the locking portion 330a is not limited, but one side is preferably in contact with the rear of the sub-ball bearing 100. The shape of the supporting portion 350a is not limited, but one side is connected to the locking portion 330a, and the other side is preferably extended in the direction of the hollow portion 462 of the seating portion.

The process in which the fixing clasp 300a is assembled to the seating portion 46a will be described.

The support portion 350a of the fixing clasp 300a is inserted into the hollow portion 462 of the seating portion 46a. In this embodiment, only the support portion 350a is inserted into the hollow portion 462 of the fixing clasp 300a, and the locking portion 330a is not inserted. In this state, the fixing clasp 330a is coupled to the seating portion 46a. For example, it can be combined by fastening the screw 500 to the assembly hole 468 of the seating portion 462 and the assembly hole 358 of the support portion 350a. The process of assembling the shaft 46 on which the fixing clasp 300a is assembled to the sub-ball bearing 100 is the same as the above-described embodiment.

In this embodiment, only the support portion 350a is inserted into the hollow portion 462 among the fixing clasps 300a, and the locking portion 330a is not inserted. Therefore, it is possible to make the length of the seating portion 46a smaller than in the above-described embodiment.

6, another embodiment of the compressor according to the present invention will be described.

The present embodiment is also substantially the same in principle as the above-described embodiments. However, in this embodiment, the structure in which the fixing clasp is assembled to the seating portion is different.

In order to avoid the complexity of the description, description will be made focusing on parts different from the above-described embodiments.

In this embodiment, the hollow portion is not provided in the seating portion 46a. Also, the seating portion 46a need not be provided with a hole through which the locking portion protrudes. However, an assembly hole 469 may be provided in the seating portion 46a.

The fixing clasp 300b may include a locking portion 330b and a supporting portion 350b. An assembly hole 468 may be provided on the support portion 350b. The shape of the locking portion 330b is not limited, but one side is preferably in contact with the rear of the sub ball bearing 100. The shape of the support portion 350b is not limited, but one side is connected to the locking portion 330b, and the other side preferably extends toward the outer surface of the seating portion 46a. In this embodiment, the end portion of the locking portion 330b and the supporting portion 350b may be located on approximately the same plane.

The process in which the fixing clasp 300b is assembled to the seating portion 46a will be described.

In this embodiment, since the hollow portion is not provided in the seating portion 46a, the support portion 350b of the fixing clasp 300b is brought into contact with one end surface of the seating portion 46a. In this state, the fixing clasp 300b is coupled to the seating portion 46a. For example, it can be combined by fastening the screw 500 to the assembly hole 468 of the seating portion 46a and the assembly hole 469 of the support portion 350b. The process of assembling the shaft 46 on which the fixing clasp 300b is assembled to the sub ball bearing 100 is the same as in the above-described embodiment.

In this embodiment, it is not necessary to process the hollow portion in the seating portion 46a. In addition, in this embodiment, the locking portion 330b and the supporting portion 350b of the fixing clasp 300b are not inserted into the seating portion 46a. Therefore, it is possible to make the length of the seating portion 46a smaller than in the above-described embodiment.

On the other hand, in the present embodiment, a plurality of engaging portions 330b are arranged to be spaced apart at a predetermined distance in a substantially radial manner, and the supporting portion 350b is illustrated and described as a substantially circular fixed clasp 300b. However, this embodiment is not limited to this, and it is also possible to have one or two locking portions 330b.

On the other hand, the parts not separately described in each embodiment may be substantially the same in the contents of other embodiments. In addition, even if there is no special mention, technical matters described in one embodiment may be equally applied in other embodiments, unless they are disposed to each other.

As described above, in the compressor according to the present invention, even if vibration occurs in the compressor, it is possible to effectively prevent the shaft from moving in the lateral direction. Therefore, even if vibration occurs in the compressor, it is possible to prevent damage from colliding with other parts due to the lateral movement of the shaft. Therefore, the reliability of the compressor is improved.

In addition, in the present invention, since the lateral movement of the shaft can be prevented without pressing the shaft into the sub ball bearing, the machining tolerance of the shaft inserted into the sub ball bearing can be relaxed. Therefore, it is possible to simplify the assembly process of the compressor.

As described above, the present invention has been described by means of limited embodiments and drawings with specific details, such as specific components, which are used to help understand the present invention. That is, the present invention is not limited to the above-described embodiments, and those skilled in the art to which the present invention pertains can make various modifications and variations from these descriptions, and these modifications and variations are the scope of the present invention.

For example, in the above-described embodiment, ball bearings have been described as main bearings and sub-bearings, but the present invention is not limited thereto, and other types of bearings may be used.

1: Electric compressor 2: Main housing
46: shaft 46a: seating portion
300, 300a, 300b: fixed clasp

Claims (11)

A main housing having an interior space;
A motor provided in the main housing and having a stator and a rotor;
A shaft coupled to the rotor;
A seating portion located on one side of the shaft and having a smaller diameter than the shaft;
A sub-ball bearing slidingly assembled to the seating portion;
A hollow portion and a hole provided in the seating portion;
An electric compressor including a locking portion protruding into the hole and a supporting portion connected to the locking portion and accommodated in the hollow portion, and including a fixing clasp having its own elastic force. The electric compressor of claim 1, wherein the length and width of the engaging portion correspond to the length and width of the hole, and at least a portion of the engaging portion protrudes from the hole. The electric compressor according to claim 2, wherein the upper portion of the engaging portion is inclined downward from front to rear. The electric compressor according to claim 3, wherein the height of the front of the engaging portion is greater than the height of the hole, and the height of the rear of the engaging portion corresponds to the height of the hole. The electric compressor according to claim 4, wherein the support portion includes a portion extending forward from the engaging portion. The electric compressor according to claim 5, wherein a plurality of the engaging portions are provided, a plurality of supporting portions extending forward from each of the engaging portions are provided, and the respective supporting portions are connected to each other in front of the engaging portion. The electric compressor according to any one of claims 1 to 6, wherein the other side of the shaft is rotatably supported by a journal bearing. A main housing having an interior space;
A motor provided in the main housing and having a stator and a rotor;
A shaft coupled to the rotor;
A seating portion located on one side of the shaft and having a smaller diameter than the shaft;
A sub-ball bearing slidingly assembled to the seating portion;
A hollow portion provided in the seating portion;
It includes a locking portion and a support portion connected to the locking portion, one side of the locking portion is in contact with the sub-ball bearing, one side of the supporting portion is connected to the locking portion and the other side includes a fixing clasp inserted into the hollow portion Motorized compressor. 9. The electric compressor according to claim 8, wherein the locking portion is inclined downward from front to rear. A main housing having an interior space;
A motor provided in the main housing and having a stator and a rotor;
A shaft coupled to the rotor;
A seating portion located on one side of the shaft and having a smaller diameter than the shaft;
A sub-ball bearing slidingly assembled to the seating portion;
It includes a locking portion and a support portion connected to the locking portion, one side of the locking portion contacts the sub-ball bearing, one side of the supporting portion is connected to the locking portion, and the other side includes a fixing clasp coupled to the outer surface of the seating portion Motorized compressor. 11. The electric compressor according to claim 10, wherein the locking portion is inclined downward from front to rear.

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