Press fitting device for main shaft and motor rotor core of electric scroll compressor

Abstract

An electric scroll compressor main shaft and motor rotor iron core press-fitting device comprises an upper base, a rotor pressing block and a cylindrical pin pressing block, a motor rotor iron core placing position is arranged in the upper base, a motor rotor iron core to be installed is arranged in the motor rotor iron core placing position, and a main shaft cavity is formed in the center of the motor rotor iron core placing position. The rotor pressing block is arranged in the motor rotor iron core placing position of the upper base and located above a motor rotor iron core, a through hole is formed in the middle of the rotor pressing block, an inner cylindrical hole for containing the upper end of a compressor spindle is formed in the cylindrical pin pressing block, the lower end of the compressor spindle penetrates through the through hole and is arranged in the motor rotor iron core to be installed, and the upper end of the compressor spindle is arranged in the inner cylindrical hole. The cylindrical pin pressing block moves downwards, and the compressor main shaft extends into the motor rotor iron core to be matched with the motor rotor iron core. According to the utility model, the depth and the coaxiality of the compressor main shaft pressed into the motor rotor iron core and the angle requirement of the cylindrical pin and the motor rotor can be conveniently and rapidly controlled, and the production rhythm is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool fixture field, concretely speaking, a kind of electric scroll compressor main shaft and motor rotor core press fitting device. BACKGROUND

[0002] In electric scroll compressor, main shaft is press fitted into motor rotor core, rotates with the rotation of rotor core, to drive the movement of orbiting scroll plate and realize the compression of gas, it is the main rotating component of electric scroll compressor. Because of the high speed requirement of main shaft and rotor core, its assembly accuracy has direct influence on vibration, noise, refrigeration performance etc. of whole scroll compressor, in order to ensure the safety and reliability of scroll compressor operation, its assembly accuracy needs to be guaranteed. Main shaft and motor rotor core are interference assembly, in the process of press fitting, certain press fitting force is needed, to ensure the coaxiality of main shaft and motor rotor core and the distance between main shaft end face and rotor end face, i.e. the depth of main shaft press fitting is certain amount. And eccentric cylindrical pin is arranged on main shaft, the angle requirement of cylindrical pin and motor rotor needs to be guaranteed. In existing press fitting device, the requirement of consistency of main shaft press fitting depth and position degree accuracy is difficult to meet, and the production efficiency of prior art is low.

[0003] The device aims to control the depth and position degree of main shaft press fitting into rotor, improve assembly accuracy and consistency, ensure the overall performance and consistency of produced electric scroll compressor, so as to improve production rhythm. SUMMARY

[0004] The technical scheme of the utility model is: a kind of electric scroll compressor main shaft and motor rotor core press fitting device, including upper base, rotor pressing block and cylindrical pin pressing block, the upper base is motor rotor core placement position inside, the motor rotor core to be installed is placed in motor rotor core placement position, the center of motor rotor core placement position is equipped with main shaft cavity, the rotor pressing block is placed in the motor rotor core placement position of upper base, and is located above motor rotor core, the middle part of the rotor pressing block is equipped with the through hole for compressor main shaft, the lower end of compressor main shaft passes through the through hole, is placed in the motor rotor core to be installed, and the upper end is placed in the inner cylindrical hole of cylindrical pin pressing block, cylindrical pin pressing block goes down, and compressor main shaft is matched with motor rotor core and is inserted into motor rotor core.

[0005] Preferably, the bottom of the motor rotor core placement position in the upper base is provided with a rotor support block, which forms a lower step matched with the lower end of the motor rotor core to be installed with the bottom surface of the motor rotor core placement position.

[0006] As a further preferred, the rotor support block is provided with a positioning pin protruding upward.

[0007] As further preferred, the lower end of the positioning pin is fixed to the upper base, the rotor support block is provided with a positioning hole through which the positioning pin passes, and the positioning pin extends upward above the rotor support block after passing through the positioning hole.

[0008] Preferably, the lower surface of the rotor pressing block is an upper step matching the upper end surface of the motor rotor core.

[0009] Preferably, the inner cylindrical hole of the cylindrical pin pressing block, the through hole on the rotor pressing block and the main shaft cavity of the motor rotor core placement site are coaxial structures when the cylindrical pin pressing block descends.

[0010] Preferably, the cylindrical pin pressing block is provided with an eccentric through hole, and the upper end of the compressor main shaft is further provided with an eccentric cylindrical pin. The eccentric through hole matches the structure and position of the cylindrical pin to be installed on the compressor main shaft, so that the axis of the compressor main shaft is in a vertical state during installation, the cylindrical pin is installed in the compressor main shaft, and the compressor main shaft is installed in the motor rotor core.

[0011] As further preferred, the depth of the eccentric through hole is the distance from the upper end surface of the cylindrical pin to the upper end surface of the compressor main shaft after the cylindrical pin is pressed into the compressor main shaft.

[0012] Preferably, the bottom base is further provided with a stand fixed thereon, the stand is beside the upper base, the upper end of the stand is provided with an upper positioning seat, the upper positioning seat is provided with a vertical guide rail, the cylindrical pin pressing block is provided with a guide block, the guide block is in the guide rail and ascends and descends along the guide rail, and the upper end of the cylindrical pin pressing block is provided with an external pressing device for pressing the cylindrical pin pressing block to descend.

[0013] Preferably, the depth of the inner cylindrical hole of the cylindrical pin pressing block and the thickness of the rotor pressing block are the distance from the end surface of the compressor main shaft to the end surface of the motor rotor core after installation.

[0014] The utility model discloses a kind of beneficial effects: the utility model can realize the depth and coaxiality requirement of relatively convenient and fast control compressor main shaft press into motor rotor core, simultaneously can also guarantee the angle requirement of cylindrical pin relative to motor rotor core after cylindrical pin press into main shaft. In the production process, while guaranteeing higher assembly precision and better assembly consistency, production time is saved, and production rhythm is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0016] Figure 2 It is the full cut structure schematic diagram of the utility model.

[0017] Figure 3 Structure schematic view of the upper base of the utility model from the top.

[0018] Figure 4 Structure schematic view of the rotor pressing block from the bottom of the utility model.

[0019] Figure 5 Structure schematic view of the cylindrical pin pressing block from the bottom of the utility model.

[0020] Figure 6 Top view of the cylindrical pin pressing block of the utility model.

[0021] Figure 7 A-A sectional view of the utility model.

[0022] Figure 8 External structure schematic view of the utility model in use.

[0023] Figure 9 Sectional view of the utility model in use.

[0024] Label explanation

[0025] 1: rotor pressing block; 11: through hole; 12: upper step;

[0026] 2: cylindrical pin pressing block; 21: inner cylindrical hole; 22: eccentric through hole; 23: guide block; 24: external pressing device;

[0027] 3: guide rail;

[0028] 4: upper positioning seat;

[0029] 5: vertical rod;

[0030] 6: upper base; 61: positioning pin; 62: main shaft cavity; 63: motor rotor iron core placement position;

[0031] 7: base;

[0032] 8: rotor support block;

[0033] 9: compressor main shaft; 91: cylindrical pin;

[0034] 10: motor rotor iron core. DETAILED DESCRIPTION

[0035] The utility model will be further described below in combination with the drawings and examples.

[0036] As Figures 1-8As shown in the figure, an electric scroll compressor main shaft and motor rotor core press fitting device, comprising an upper base 6, a rotor pressing block 1 and a cylindrical pin pressing block 2, the upper base 6 is provided with a motor rotor core placing position 63, the motor rotor core 10 to be installed is arranged in the motor rotor core placing position 63, the center of the motor rotor core placing position 63 is provided with a main shaft cavity 62, the rotor pressing block 1 is arranged in the motor rotor core placing position 63 of the upper base 6 and is located above the motor rotor core 10, the middle part of the rotor pressing block 1 is provided with a through hole 11 for the compressor main shaft 9 to pass through, the cylindrical pin pressing block 2 is provided with an inner cylindrical hole 21 for accommodating the upper end of the compressor main shaft 9, the lower end of the compressor main shaft 9 passes through the through hole 11 and is arranged in the motor rotor core 10 to be installed, the upper end is arranged in the inner cylindrical hole 21 of the cylindrical pin pressing block 2, the cylindrical pin pressing block 2 goes down, and the compressor main shaft 9 extends into the motor rotor core 10 and matches with it.

[0037] In the embodiment, as shown in the figure, Figure 3 The bottom of the motor rotor core placing position 63 in the upper base 6 is provided with a rotor support block 8, which forms a lower step matched with the lower end of the motor rotor core 10 to be installed with the bottom surface of the motor rotor core placing position 63.

[0038] In the embodiment, the rotor support block 8 is provided with a positioning pin 61 protruding upward.

[0039] In the embodiment, the lower end of the positioning pin 61 is fixed on the upper base 6, the rotor support block 8 is provided with a positioning hole for the positioning pin 61 to pass through, and the positioning pin 61 extends upward above the rotor support block 8 after passing through the positioning hole.

[0040] In the embodiment, as shown in the figure, Figure 4 The lower surface of the rotor pressing block 1 is an upper step 12 matched with the upper end surface of the motor rotor core 10.

[0041] In the embodiment, when the cylindrical pin pressing block 2 goes down, the inner cylindrical hole 21 of the cylindrical pin pressing block 2, the through hole 11 on the rotor pressing block 1 and the main shaft cavity 62 of the motor rotor core placing position 63 are coaxial structures.

[0042] In the embodiment, as shown in the figure, Figure 5 The cylindrical pin pressing block 2 is provided with an eccentric through hole 22, and the upper end of the compressor main shaft 9 needs to be installed with an eccentric cylindrical pin 91, the eccentric through hole 22 is matched with the structure and position of the cylindrical pin 91 to be installed on the compressor main shaft 9, so as to ensure that the axis of the compressor main shaft 9 is in a vertical state during installation, and the cylindrical pin 91 is installed in the compressor main shaft 9, and at the same time the compressor main shaft 9 is installed in the motor rotor core 10.

[0043] In this embodiment, the depth of the eccentric through hole 22 is the distance between the upper end surface of the cylindrical pin 91 and the upper end surface of the compressor main shaft 9 after the cylindrical pin 91 is pressed into the compressor main shaft 9. The position of the eccentric through hole 22 on the cylindrical pin pressing block 2 relative to the inner cylindrical hole 21, i.e. the position of the cylindrical pin 91 after being pressed into the main shaft 9, requires that the position of the eccentric through hole 22 on the cylindrical pin pressing block 2 be controlled to ensure that the angle of the cylindrical pin 91 relative to the motor rotor core 10 after being pressed into the main shaft 9 meets the requirements.

[0044] In this embodiment, a base 7 is further provided below the upper base 6, and a vertical rod 5 is further fixed on the base 7 and located beside the upper base 6. An upper positioning seat 4 is provided on the upper end of the vertical rod 5, and a vertical guide rail 3 is provided in the upper positioning seat 4. A guide block 23 is provided on the cylindrical pin pressing block 2 and located in the guide rail 3 and can ascend and descend along the guide rail 3. An external pressing device 24 is provided above the cylindrical pin pressing block 2 and can press the cylindrical pin pressing block 2 downward.

[0045] In this embodiment, the sum of the depth of the inner cylindrical hole 21 of the cylindrical pin pressing block 2 and the thickness of the rotor pressing block 1 is the distance between the end surface of the compressor main shaft 9 and the end surface of the motor rotor core 10 after installation.

[0046] The upper end of the compressor main shaft 9 is located in the inner cylindrical hole 21 of the cylindrical pin pressing block 2, and the cylindrical pin 91 to be installed on the compressor main shaft 9 passes through the eccentric through hole 22. The rotor pressing block 1 passes through the compressor main shaft 9 and contacts the upper end surface of the motor rotor core 10, and at the same time, the lower balancing block and the rivet are given space, i.e. Figure 4 the space giving hole on the lower step of the rotor pressing block 1 shown in FIG. 1, and Figure 3 the space giving hole in the rotor supporting block 8 and the upper base 6, so that the rotor pressing block 1 can directly contact the motor rotor core 10, and when pressing is performed, there is a larger force receiving area to avoid damaging the motor rotor core 10. When the external pressing device 24 presses the whole from top to bottom, the cylindrical pin 91 is pressed into the compressor main shaft 9, the depth of the upper eccentric through hole 22 of the cylindrical pin pressing block 2 ensures the depth of the upper end surface of the cylindrical pin from the upper end surface of the compressor main shaft 9, and the sum of the depth of the inner cylindrical hole 21 of the cylindrical pin pressing block 2 and the thickness of the rotor pressing block 1 is the distance between the end surface of the compressor main shaft 9 and the end surface of the motor rotor core 10 after installation. When external force is used to press from the upper end surface of the compressor main shaft 9, it is only necessary to ensure that the lower end surface of the cylindrical pin pressing block 2 contacts the upper end surface of the rotor pressing block 1 to ensure the pressing depth requirement, and the thickness and precision of the cylindrical pin pressing block 2 and the rotor pressing block 1 can also be simply and conveniently controlled.

[0047] As shown in FIG. 1, Figure 2 , 8As shown, the position accuracy of the motor rotor core 10 and the compressor main shaft 9 is controlled by the guide rail 3 of the upper positioning seat 4, the cylindrical pin pressing block 2 and the upper base 6. The motor rotor core 10 is placed in the upper base 6, and the cylindrical hole in the motor rotor core 10 is coaxial with the main shaft cavity 62 of the upper base 6. The compressor main shaft 9 is positioned by the cylindrical pin pressing block 2 installed thereon and the upper positioning seat 4. When the cylindrical pin 91 installed on the compressor main shaft 9 is inserted into the eccentric through hole 22 of the cylindrical pin pressing block 2 and clamped into the pin hole of the compressor main shaft 9, the compressor main shaft 9 cannot rotate, and the cylindrical pin pressing block 2 is limited by the guide rail 3 of the upper positioning seat 4 to move linearly up and down. The motor rotor core 10 is installed in the upper base 6, and the positioning pin 61 in the upper base 6 penetrates the motor rotor core 10 to limit the rotation of the motor rotor core 10 and limit the angle of the motor rotor core 10 in the upper base 6. Since the cylindrical pin is limited in position by the cylindrical pin pressing block 2, the angle of the cylindrical pin relative to the motor rotor core 10 can be conveniently limited. The cylindrical pin pressing block 2 moves linearly up and down in the guide rail 3 of the upper positioning seat 4. The axis of the main shaft cavity 62 of the upper base 6 and the angle of the upper positioning seat 4 are guaranteed. The perpendicularity of the main shaft cavity 62 of the upper base 6 and the base 7 is controlled. Since the upper positioning seat 4 is installed on the vertical rod 5, the perpendicularity of the vertical rod 5 and the base 7 and the position of the main shaft cavity 62 of the upper base 6 can achieve the position accuracy of the compressor main shaft 9 pressed into the motor rotor core 10.

[0048] In the description of the present application, it should be understood that the terms "upper", "upward", "downward", "inner" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0049] In the present application, unless otherwise explicitly specified and limited, the terms "connection" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric scroll compressor main shaft and motor rotor core press fitting device, characterized in that The utility model relates to a motor rotor iron core placing position (63) in the upper base (6), the motor rotor iron core (10) to be installed is arranged in the motor rotor iron core placing position (63), the center of motor rotor iron core placing position (63) is equipped with main shaft cavity (62), the rotor press block (1) is arranged in the motor rotor iron core placing position (63) of upper base (6), and is located the upper of motor rotor iron core (10), the middle part of rotor press block (1) is equipped with the through -hole (11) of compressor main shaft (9) passes through, the inner cylindrical hole (21) of accommodating compressor main shaft (9) upper end is equipped with in the cylindrical pin press block (2), the lower end of compressor main shaft (9) passes through the through -hole (11), is arranged in the motor rotor iron core (10) to be installed, and the upper end is arranged in the inner cylindrical hole (21) of cylindrical pin press block (2), and cylindrical pin press block (2) goes down, and compressor main shaft (9) extends into to motor rotor iron core (10) and is matched.

2. The main shaft and motor rotor core press fitting device of an electric scroll compressor according to claim 1, characterized in that The bottom of the motor rotor iron core placing position (63) in the upper base (6) is equipped with rotor support block (8), and the rotor support block (8) and the bottom surface of the motor rotor iron core placing position (63) form a lower step matched with the lower end of the motor rotor iron core (10) to be installed.

3. The main shaft and motor rotor core press fitting device of an electric scroll compressor according to claim 2, characterized in that The rotor support block (8) is equipped with a positioning pin (61) protruding upward.

4. The main shaft and motor rotor core press fitting device of an electric scroll compressor according to claim 3, characterized in that The lower end of the positioning pin (61) is fixed to the upper base (6), the rotor support block (8) is equipped with a positioning hole through which the positioning pin (61) passes, and the positioning pin (61) extends upward above the rotor support block (8) after passing through the positioning hole.

5. The main shaft and motor rotor core press fitting device for an electric scroll compressor according to claim 1, characterized in that The lower surface of the rotor press block (1) is an upper step (12) matched with the upper end surface of the motor rotor iron core (10).

6. The main shaft and motor rotor core press fitting device for an electric scroll compressor according to claim 1, characterized in that When the cylindrical pin press block (2) goes down, the inner cylindrical hole (21) of the cylindrical pin press block (2), the through-hole (11) on the rotor press block (1), and the main shaft cavity (62) of the motor rotor iron core placing position (63) are coaxial structures.

7. The main shaft and motor rotor core press fitting device for an electric scroll compressor according to claim 1, characterized in that The cylindrical pin press block (2) is equipped with an eccentric through hole (22), and the upper end of the compressor main shaft (9) needs to be installed with an eccentric cylindrical pin (91). The eccentric through hole (22) is matched with the structure and position of the cylindrical pin (91) to be installed on the compressor main shaft (9), ensuring that the axis of the compressor main shaft (9) is in a vertical state during installation, and the cylindrical pin (91) is installed in the compressor main shaft (9), and the compressor main shaft (9) is installed in the motor rotor iron core (10).

8. The main shaft and motor rotor core press fitting device of an electric scroll compressor according to claim 7, characterized in that The depth of the eccentric through hole (22) is the distance between the upper end surface of the cylindrical pin (91) and the upper end surface of the compressor main shaft (9) after the cylindrical pin (91) is pressed into the compressor main shaft (9).

9. The main shaft and motor rotor core press fitting device for an electric scroll compressor according to claim 1, characterized in that It also includes the base (7) set below the upper base (6), the upper base (6) is provided with a vertical rod (5), the vertical rod (5) is provided with an upper positioning seat (4), the upper positioning seat (4) is provided with a vertical guide rail (3), the cylindrical pin pressing block (2) is provided with a guide block (23), the guide block (23) is provided in the guide rail (3) and is lifted along the guide rail (3); the cylindrical pin pressing block (2) is provided with an external pressing device (24), the cylindrical pin pressing block (2) is pressed downward by the external pressing device (24).

10. The main shaft and motor rotor core press fitting device for an electric scroll compressor according to claim 1, characterized in that The depth of the inner cylindrical hole (21) of the cylindrical pin pressing block (2) and the thickness of the rotor pressing block (1) are equal to the distance from the end surface of the compressor main shaft (9) to the end surface of the motor rotor core (10) after installation.

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