Three-phase four-stage motor housing structure

Abstract

The utility model provides a three -phase four -stage motor casing structure, including the body and the cover of the cover plate of body both ends, the position of cover plate and body connection has set up the elastic sheet, has set up the separation groove between the elastic sheet and the cover plate, the one end of elastic sheet is connected with the cover plate back to the separation groove, is provided with the connecting hole of the outside screw passing through and hitting in the body on the elastic sheet, motor casing structure can overcome the defect that the existing technology is because the screw loosens or the not close connection between the cover plate and the body, the body and the cover plate between the shaking lead to both high frequency impact, thereby send the defect of the harsh sound.

Description

Technical Field

[0001] This utility model relates to the field of electric motor technology, specifically to a housing structure for a three-phase four-pole electric motor. Background Technology

[0002] A three-phase four-pole motor is a three-phase asynchronous motor with a synchronous speed of 1500 rpm (under a 50Hz power supply). It features moderate starting torque and a compact structure, and is widely used in industrial equipment such as machine tools and water pumps. The motor consists of a body and a cover plate installed on the side of the body. When installing the cover plate, screws are needed to drive the body and the cover plate into place. When the motor is working, the screws may loosen or the connection between the cover plate and the body may be loose, causing vibration between the body and the cover plate, resulting in high-frequency collisions between the two and producing a harsh sound. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defects in the prior art where the body and the cover plate vibrate due to loose screws or loose connection between the cover plate and the body, resulting in high-frequency collisions and thus producing a harsh sound. This invention provides a three-phase four-pole motor body structure that can reduce noise generation.

[0004] Therefore, this utility model provides a three-phase four-pole motor housing structure, including a body and cover plates covering both ends of the body. An elastic sheet is provided at the position where the cover plate connects to the body. A partition groove is provided between the elastic sheet and the cover plate. The end of the elastic sheet facing away from the partition groove is connected to the cover plate. A connecting hole is provided on the elastic sheet for external screws to pass through and be driven into the body.

[0005] Furthermore: the cover plate is provided with a bent plate that sinks downward toward one side of the body, the elastic sheet and the partition groove are both provided on the bent plate, and the inner end face of the bent plate abuts against the outer end face of the body.

[0006] Furthermore: the outer end face of the body is provided with a number of reinforcing ribs, which extend along the length of the body and have gaps between adjacent reinforcing ribs, forming air ducts for guiding the airflow.

[0007] Furthermore, a heat dissipation rib is provided at the end of the reinforcing rib facing away from the main body.

[0008] Furthermore, the heat dissipation ribs and reinforcing ribs are arranged in an umbrella-shaped structure.

[0009] Furthermore: the cover plate is connected to the body by positioning pins, and the body is provided with an extension rib parallel to the reinforcing rib on the outside, and the extension rib is provided with mounting holes for positioning pins.

[0010] Furthermore: the cover plate includes a front cover and a rear cover disposed on both sides of the body, and a fan blade cover sleeved outside the rear cover, wherein the front cover and the rear cover are both fastened to the body.

[0011] Furthermore, the fan blade cover is provided with several evenly distributed ventilation holes.

[0012] Furthermore, the ventilation holes are square or round.

[0013] Furthermore, the outer end face of the body is provided with a slot for mounting a nameplate.

[0014] The technical solution of this utility model has the following advantages: 1. The present invention provides a housing structure for a three-phase four-pole motor. The screw is screwed in from the elastic plate. A partition groove is provided between the elastic plate and the cover plate. Therefore, when the screw becomes loose, even if there is a high-frequency impact between the elastic plate and the outer end face of the body, the area of ​​the elastic plate is small and its elasticity is good, thereby effectively reducing the noise of vibration.

[0015] 2. This utility model provides a three-phase four-pole motor housing structure. The cover plate is provided with a bent plate that sinks towards one side of the main body. The bent plate abuts against the outer end face of the housing to form a supporting force. Screws are screwed into the elastic sheet to connect the elastic sheet and the housing. Since the side of the elastic sheet facing away from the partition groove is integrally formed with the cover plate, the screws can effectively connect the cover plate and the housing. The elastic sheet has a small area and good elasticity, so it can reduce vibration noise even under high-frequency vibration. In this embodiment, the screws can be fixed with countersunk screws, which can better hide the screws and increase the overall aesthetics. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the motor housing; Figure 2 A schematic diagram of the overall structure of the motor housing from another angle; Figure 3 This is a schematic diagram of the side structure of the motor housing; Figure 4 This is a schematic diagram of the cross-sectional structure of the motor housing; Figure 5 This is a schematic diagram of the overall structure of the motor housing; Figure 6 for Figure 5 Enlarged view of section A in the middle; Figure 7 A schematic diagram of the structure for inserting the positioning pin into the mounting hole.

[0018] Explanation of reference numerals in the attached figures: 1. Body; 2. Cover plate; 21. Front cover; 22. Rear cover; 3. Elastic sheet; 31. Connecting hole; 4. Divider groove; 5. Bending plate; 6. Reinforcing rib; 61. Air duct; 62. Heat dissipation rib; 7. Positioning pin; 71. Mounting hole; 8. Extension rib; 9. Fan blade cover; 91. Ventilation hole; 92. Slot. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Example This embodiment provides a three-phase four-pole motor housing structure, including a body 1 and cover plates 2 covering both ends of the body 1. An elastic piece 3 is provided at the position where the cover plate 2 connects to the body 1. A partition groove 4 is provided between the elastic piece 3 and the cover plate 2. One end of the elastic piece 3 facing away from the partition groove 4 is connected to the cover plate 2. A connecting hole 31 is provided on the elastic piece 3 for external screws to pass through and be driven into the body 1.

[0024] The specific improvements mentioned above are as follows: Figure 1 and Figure 2 As shown, compared with the prior art, the screw is screwed in from the elastic plate 3. A partition groove 4 is provided between the elastic plate 3 and the cover plate 2. Therefore, when the screw becomes loose, even if there is a high-frequency impact between the elastic plate 3 and the outer end face of the body 1, the area of ​​the elastic plate 3 is small and its elasticity is better, which can effectively reduce the noise of vibration.

[0025] Based on the above embodiments: the cover plate 2 is provided with a bent plate 5 that sinks towards the body 1, the elastic sheet 3 and the partition groove 4 are both provided on the bent plate 5, and the inner end face of the bent plate abuts against the outer end face of the body 1.

[0026] The specific improvements mentioned above are as follows: Figures 1-3 As shown, a bent plate 5 is provided on the cover plate 2, which is recessed towards the body 1. The bent plate 5 abuts against the outer end face of the shell to form a supporting force. A screw is screwed into the elastic sheet 3 to connect the elastic sheet 3 and the shell. Since the side of the elastic sheet 3 facing away from the partition groove 4 is integrally formed with the cover plate 2, the screw can effectively connect the cover plate 2 and the shell. The screw is screwed into the shell from the elastic sheet 3. The elastic sheet 3 has a small area and good elasticity, so it can reduce vibration noise even under high frequency vibration. In this embodiment, the screw can be fixed with countersunk screws, which can better hide the screw and increase the overall aesthetics.

[0027] Based on the above embodiments: the outer end face of the body 1 is provided with a plurality of reinforcing ribs 6, the reinforcing ribs 6 extend along the length direction of the body 1, and there are gaps between adjacent reinforcing ribs 6, which form air ducts 61 for guiding the air body through.

[0028] Based on the above embodiments: a heat dissipation rib 62 is provided at the end of the reinforcing rib 6 facing away from the main body 1.

[0029] Based on the above embodiments: the heat dissipation ribs 62 and the reinforcing ribs 6 are arranged in an umbrella-shaped structure.

[0030] The specific improvements mentioned above are as follows: Figure 2As shown, a reinforcing rib 6 is provided on the outer end face of the main body 1, and a heat dissipation rib 62 is provided above the reinforcing rib 6. The reinforcing rib 6 and the heat dissipation rib 62 are arranged in an umbrella-shaped structure, and an air duct 61 is formed between the two reinforcing ribs 6. When the motor is working, the air duct 61 can generate airflow, increase the heat dissipation area, and thus reduce the temperature rise of the motor. The heat dissipation rib 62 can effectively increase the overall heat dissipation area of ​​the housing, and also enhance the aesthetics.

[0031] Based on the above embodiments: the cover plate 2 and the body 1 are connected by positioning nails 7, the body 1 is provided with an extension rib 8 arranged parallel to the reinforcing rib 6, and the extension rib 8 is provided with mounting holes 71 for positioning nails 7.

[0032] Based on the above embodiments: the cover plate 2 includes a front cover 21 and a rear cover 22 disposed on both sides of the body 1, and a fan blade cover 9 sleeved on the outside of the rear cover 22. The front cover 21 and the rear cover 22 are both fastened to the body 1.

[0033] The specific improvements mentioned above are as follows: Figure 4 and Figure 7 As shown, an extension rib 8 is provided on the outer end face of the main body 1. The extension rib 8 has a mounting hole 71. When the front cover 21 and the rear cover 22 are installed with the main body 1, the positioning pin 7 passes through the front cover 21 and the rear cover 22 and extends into the mounting hole 71 for fixation. Then, the fan blade cover 9 is installed on the outside of the rear cover 22. The fan blade cover 9 and the rear cover 22 are fixed with screws. The positioning pin 7 is set in the mounting hole 71 of the extension rib 8, which can not only ensure that the screw is not corroded, but also fix the position of the screw so that it does not shift, reduce the impact of the screw on the appearance, and increase the strength.

[0034] Based on the above embodiments: the fan blade cover 9 is provided with a number of evenly distributed ventilation holes 91.

[0035] Based on the above embodiments: the ventilation hole 91 is square or circular.

[0036] The specific improvements mentioned above are as follows: Figure 2 and Figure 4 As shown, the fan blade cover 9 is provided with several ventilation holes 91 arranged in a square structure. The ventilation holes 91 have a relatively small area, but there are many of them. The small ventilation holes 91 can effectively prevent some large foreign objects from entering the engine and thus affecting the normal operation of the engine.

[0037] Based on the above embodiments: the outer end face of the body 1 is provided with a slot 92 for installing a nameplate.

[0038] The specific improvements mentioned above are as follows: Figure 5 and Figure 6As shown, the nameplate can be inserted into the slot 92 without the use of rivets or other processes, simplifying the nameplate installation process and reducing costs.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A housing structure for a three-phase four-pole electric motor, characterized in that: Includes a main body (1) and cover plates (2) covering both ends of the main body (1). An elastic piece (3) is provided at the position where the cover plate (2) connects to the main body (1). A partition groove (4) is provided between the elastic piece (3) and the cover plate (2). One end of the elastic piece (3) facing away from the partition groove (4) is connected to the cover plate (2). A connecting hole (31) is provided on the elastic piece (3) for external screws to pass through and be driven into the main body (1).

2. The housing structure of a three-phase four-pole motor according to claim 1, characterized in that: The cover plate (2) is provided with a bent plate (5) that sinks towards the body (1). The elastic sheet (3) and the partition groove (4) are both provided on the bent plate (5). The inner end face of the bent plate (5) abuts against the outer end face of the body (1).

3. The housing structure of a three-phase four-pole motor according to claim 2, characterized in that: The outer end face of the body (1) is provided with a plurality of reinforcing ribs (6), which extend along the length direction of the body (1). There are gaps between adjacent reinforcing ribs (6), which form air ducts (61) for guiding the air body through.

4. The housing structure of a three-phase four-pole motor according to claim 3, characterized in that: The reinforcing rib (6) has a heat dissipation rib (62) at the end facing away from the main body (1).

5. The housing structure of a three-phase four-pole motor according to claim 4, characterized in that: The heat dissipation ribs (62) and the reinforcing ribs (6) are arranged in an umbrella-shaped structure.

6. The housing structure of a three-phase four-pole motor according to claim 5, characterized in that: The cover plate (2) is connected to the body (1) by a positioning pin (7). The body (1) is provided with an extension rib (8) arranged parallel to the reinforcing rib (6) on the outside. The extension rib (8) is provided with a mounting hole (71) for the positioning pin (7).

7. A three-phase four-pole motor housing structure according to any one of claims 1-5, characterized in that: The cover plate (2) includes a front cover (21) and a rear cover (22) disposed on both sides of the body (1) and a fan blade cover (9) sleeved on the outside of the rear cover (22). The front cover (21) and the rear cover (22) are both fastened to the body (1).

8. The housing structure of a three-phase four-pole motor according to claim 7, characterized in that: The fan blade cover (9) is provided with a number of evenly distributed ventilation holes (91).

9. A three-phase four-pole motor housing structure according to claim 8, characterized in that: The ventilation hole (91) is square or round.

10. A three-phase four-pole motor housing structure according to claim 9, characterized in that: The outer end face of the main body (1) is provided with a slot (92) for installing a nameplate.

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