Controller structure for electric angle grinder

Abstract

The utility model relates to the technical field of electric tools, in particular to a controller structure for an electric angle grinder, which comprises an equipment main body, an equipment shell and an equipment rear cover, the outer side of the equipment main body is fixedly connected with the equipment shell, and the right side of the equipment shell is fixedly connected with a limiting boss. Through the arrangement of the equipment rear cover, the cooling fin, the capacitor seat, the rubber sleeve and the electrolytic capacitor, the device separates the cooling fin from the electrolytic capacitor, and the cooling fin and the electrolytic capacitor have independent cooling air paths, so that the efficiency of the motor can be greatly improved, the controller body, the cooling fin and the electrolytic capacitor can be used in a reasonable temperature region, and the service life of the controller is prolonged. Meanwhile, the capacitor lead and the UVW phase line are arranged on one side of the controller body, and the power line and the pair of switch control lines are arranged on the other side of the controller body, so that the influence of the lead on the heat dissipation of the controller body can be reduced, and the service life of the controller is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a controller structure for an electric angle grinder. Background Technique

[0002] During the operation of electric tools such as brushless angle grinders, the built-in electrolytic capacitor therein will affect the output power of the device. The larger the capacitance of the electrolytic capacitor, the greater the output power of the device. However, the placement of the capacitor is restricted by the device structure. When installing the electrolytic capacitor, it is necessary to ensure the heat dissipation effect of the controller heat sink without affecting the aesthetics and the comfort of holding by hand.

[0003] In the prior art, for some controllers of electric tools, the electrolytic capacitor and the heat sink are installed on the same side of the controller. Due to space limitations, only electrolytic capacitors with relatively small UF can be installed. However, due to the blockage of the electrolytic capacitor, the heat dissipation effect of the heat sink is poor, and the temperature of the electrolytic capacitor is too high, seriously affecting the service life of the electrolytic capacitor. For some other controllers of electric tools, the electrolytic capacitor is installed on the side of the cable, but the overall length of the device will increase, seriously affecting the aesthetics and the comfort of holding by hand. Therefore, a controller structure for an electric angle grinder is proposed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a controller structure for an electric angle grinder, so as to solve the problem that the controller structure design of some existing electric tools is unreasonable. Due to the blockage of the electrolytic capacitor, the heat dissipation effect of the heat sink is poor, the temperature of the electrolytic capacitor is too high, and the service life of the electrolytic capacitor is seriously affected.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A controller structure for an electric angle grinder, comprising a device main body, a device housing and a device rear cover. The outer side of the device main body is fixedly connected to the device housing. The right side of the device housing is fixedly connected to a limit boss. The right side of the limit boss is fixedly connected to the device rear cover through a long bolt. Two first ventilation openings are provided on each of the front and rear sides of the device rear cover. Two second ventilation openings are provided on the right side of the device rear cover. A set of third ventilation openings are provided on the right side of the device rear cover. A controller body is provided inside the device main body and the device rear cover. The front and rear sides of the controller body are slidably connected to the limit protrusions of the limit boss. The rightmost end of the upper side of the controller body is fixedly connected to a key switch. The left half of the lower side of the controller body is fixedly connected to a heat sink. A capacitor seat is fixedly connected to the upper side of the controller body. Two rubber sleeves are fixedly connected inside the capacitor seat. The rubber sleeves are sleeved outside the electrolytic capacitor. The right end of the electrolytic capacitor is fixedly connected to two capacitor leads. The capacitor leads are fixedly connected to the controller body. A pair of power lines and a pair of switch control lines are fixedly connected to the lower side of the controller body. A set of UVW phase lines are fixedly connected to the upper side of the controller body.

[0007] Preferably, the limit boss is of an annular structure. Two limit protrusions are provided inside the limit boss and are symmetrically distributed in the front and rear. First bolt connection holes are provided on the limit protrusions of the limit boss. Two second bolt connection holes are provided on the right side of the device rear cover and are symmetrically distributed in the front and rear.

[0008] Preferably, the first ventilation openings and the second ventilation openings are both located in the upper half of the device rear cover, and the third ventilation openings are located in the lower half of the device rear cover.

[0009] Preferably, the third ventilation openings are composed of multiple slot holes and are arranged in a semi-circular ring shape. Semi-cylindrical grooves are provided on both the front and rear sides of the controller body. The key switch is inclined.

[0010] Preferably, the heat sink is provided with multiple through holes in the front and rear. The upper side of the capacitor seat is in contact with the electrolytic capacitor. The rubber sleeves are both annular sleeves. The capacitance of the electrolytic capacitor is 100 - 800UF.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] In the present utility model, through the device rear cover, heat sink, capacitor seat, rubber sleeve and electrolytic capacitor provided, the device separates the heat sink and the electrolytic capacitor, and both the heat sink and the electrolytic capacitor have independent cooling air paths, which can greatly improve the motor efficiency, enable the controller body, the heat sink and the electrolytic capacitor to be used in a reasonable temperature range, extend the service life of the controller body, the heat sink and the electrolytic capacitor. At the same time, the capacitor leads and the UVW phase lines are placed on one side of the controller body, and the power line and a pair of switch control lines are placed on the other side of the controller body, which can reduce the influence of the leads on the heat dissipation of the controller body and extend the service life of the controller. Description of the Drawings

[0013] Figure 1 is a sectional view of the overall structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the installation structure of the limit boss of the present utility model;

[0015] Figure 3 is a schematic diagram of the installation structure of the device rear cover of the present utility model;

[0016] Figure 4 is a schematic diagram of the installation structure of the electrolytic capacitor of the present utility model.

[0017] In the figure: 1. Device main body; 2. Device housing; 3. Limit boss; 4. Long bolt; 5. Device rear cover; 6. First ventilation opening; 7. Second ventilation opening; 8. Third ventilation opening; 9. Controller body; 10. Button switch; 11. Heat sink; 12. Capacitor seat; 13. Rubber sleeve; 14. Electrolytic capacitor; 15. Capacitor lead; 16. Power line; 17. Switch control line; 18. UVW phase line. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0020] In addition, it should be noted that the use of words such as "first", "second", etc. to limit the components is only for the convenience of distinguishing the corresponding components. Without separate declaration, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0022] A controller structure for an electric angle grinder, comprising a device main body 1, a device housing 2 and a device rear cover 5. The outside of the device main body 1 is fixedly connected to the device housing 2. A limiting boss 3 is fixedly connected to the right side of the device housing 2. The right side of the limiting boss 3 is fixedly connected to the device rear cover 5 through a long bolt 4. Two first ventilation openings 6 are provided on both the front and rear sides of the device rear cover 5. Two second ventilation openings 7 are provided on the right side of the device rear cover 5. A set of third ventilation openings 8 are provided on the right side of the device rear cover 5. A controller body 9 is provided inside the device main body 1 and the device rear cover 5. The front and rear sides of the controller body 9 are slidably connected to the limiting protrusions of the limiting boss 3. The rightmost end of the upper side of the controller body 9 is fixedly connected to a key switch 10. The left half of the lower side of the controller body 9 is fixedly connected to a heat sink 11. A capacitor seat 12 is fixedly connected to the upper side of the controller body 9. Two rubber sleeves 13 are fixedly connected to the inside of the capacitor seat 12. The rubber sleeves 13 are sleeved outside the electrolytic capacitor 14. Two capacitor leads 15 are fixedly connected to the right end of the electrolytic capacitor 14. The capacitor leads 15 are fixedly connected to the controller body 9. A pair of power lines 16 and a pair of switch control lines 17 are fixedly connected to the lower side of the controller body 9. A set of UVW phase lines 18 are fixedly connected to the upper side of the controller body 9.

[0023] The limiting boss 3 is of an annular structure. There are two limiting protrusions symmetrically distributed front and back on the inner side of the limiting boss 3. First bolt connection holes are provided on the limiting protrusions of the limiting boss 3. There are two second bolt connection holes symmetrically distributed front and back on the right side of the equipment rear cover 5. The equipment housing 2 and the equipment rear cover 5 can form a complete housing body; both the first ventilation opening 6 and the second ventilation opening 7 are located in the upper half of the equipment rear cover 5, and the third ventilation opening 8 is located in the lower half of the equipment rear cover 5. The first ventilation opening 6 and the second ventilation opening 7 can ensure the cooling effect of the electrolytic capacitor 14, and the third ventilation opening 8 can improve the heat dissipation effect of the heat sink 11; the third ventilation opening 8 is composed of multiple slot holes and is arranged in a semi-circular ring shape. Semi-cylindrical grooves are provided on both the front and back sides of the controller body 9. The key switch 10 is inclinedly distributed, and the key switch 10 can adjust the operating state of the equipment main body 1; the heat sink 11 is provided with multiple through holes in the front and back directions. The upper side of the capacitor seat 12 is in contact with the electrolytic capacitor 14. The rubber sleeves 13 are all annular sleeves. The capacitance of the electrolytic capacitor 14 is 100 - 800 UF, and the capacitor seat 12 and the rubber sleeves 13 can fix the electrolytic capacitor 14.

[0024] Working process: The controller body 9 of this device is electrically connected to the rubber sleeve 13 through the capacitor lead 15, the controller body 9 is electrically connected to the equipment main body 1 through the power cord 16, the controller body 9 is electrically connected to the key switch 10 through the switch control line 17, and the controller body 9 is electrically connected to the power supply through the UVW phase lines 18. Before use, the equipment rear cover 5 and the limiting boss 3 are fixed by the long bolt 4 to make the equipment housing 2 and the equipment rear cover 5 form a complete housing body. Press the key switch 10 to start the equipment main body 1 through the controller body 9. When the equipment main body 1 is running, the electrolytic capacitor 14 fixed by the capacitor seat 12 and the rubber sleeves 13 can improve the output power of the equipment main body 1, conduct heat through the heat sink 11, ensure the cooling effect of the electrolytic capacitor 14 through the first ventilation opening 6 and the second ventilation opening 7, and improve the heat dissipation effect of the heat sink 11 through the third ventilation opening 8; this device installs the electrolytic capacitor 14 on the side of the key switch 10 of the controller body 9 to separate the heat sink 11 and the electrolytic capacitor 14. Both the heat sink 11 and the electrolytic capacitor 14 have independent cooling air paths, which can greatly improve the motor efficiency, enable the controller body 9, the heat sink 11, and the electrolytic capacitor 14 to be used in a reasonable temperature range, extend the service life of the controller body 9, the heat sink 11, and the electrolytic capacitor 14. At the same time, placing the capacitor lead 15 and the UVW phase lines 18 on one side of the controller body 9 and placing the power cord 16 and a pair of switch control lines 17 on the other side of the controller body 9 can reduce the influence of the leads on the heat dissipation of the controller body 9 and extend the service life of the controller.

[0025] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in this utility model can all be purchased from the market. The special-shaped parts can all be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A controller structure for an electric angle grinder, comprising a device main body (1), a device housing (2) and a device rear cover (5), characterized in that: The outer side of the device main body (1) is fixedly connected with a device housing (2). The right side of the device housing (2) is fixedly connected with a limiting boss (3). The right side of the limiting boss (3) is fixedly connected with a device rear cover (5) through a long bolt (4). Both the front and rear sides of the device rear cover (5) are provided with two first ventilation openings (6). The right side of the device rear cover (5) is provided with two second ventilation openings (7). The right side of the device rear cover (5) is provided with a group of third ventilation openings (8). The inner sides of the device main body (1) and the device rear cover (5) are provided with a controller body (9). The front and rear sides of the controller body (9) are slidably connected with the limiting protrusions of the limiting boss (3). The rightmost end of the upper side of the controller body (9) is fixedly connected with a key switch (10). The left half of the lower side of the controller body (9) is fixedly connected with a heat sink (11). The upper side of the controller body (9) is fixedly connected with a capacitor seat (12). Two rubber sleeves (13) are fixedly connected inside the capacitor seat (12). The rubber sleeves (13) are sleeved outside the electrolytic capacitor (14). The right end of the electrolytic capacitor (14) is fixedly connected with two capacitor leads (15). The capacitor leads (15) are fixedly connected with the controller body (9). The lower side of the controller body (9) is fixedly connected with a pair of power lines (16) and a pair of switch control lines (17). The upper side of the controller body (9) is fixedly connected with a group of UVW phase lines (18).

2. The controller structure for an electric angle grinder according to claim 1, characterized in that: The limiting boss (3) is of an annular structure. Two limiting protrusions symmetrically distributed in the front and rear are arranged inside the limiting boss (3). First bolt connection holes are arranged on the limiting protrusions of the limiting boss (3). Two second bolt connection holes symmetrically distributed in the front and rear are arranged on the right side of the device rear cover (5).

3. The controller structure for an electric angle grinder according to claim 1, wherein: Both the first ventilation openings (6) and the second ventilation openings (7) are located in the upper half of the device rear cover (5). The third ventilation openings (8) are located in the lower half of the device rear cover (5).

4. The controller structure for an electric angle grinder according to claim 1, characterized in that: The third ventilation openings (8) are composed of multiple slot holes. The third ventilation openings (8) are arranged in a semi-circular ring shape. Semi-cylindrical grooves are arranged on both the front and rear sides of the controller body (9). The key switch (10) is inclinedly distributed.

5. The controller structure for an electric angle grinder according to claim 1, characterized in that: The heat sink (11) is provided with multiple through holes in the front and rear directions. The upper side of the capacitor seat (12) is in contact with the electrolytic capacitor (14). The rubber sleeves (13) are all annular sleeves. The capacitance of the electrolytic capacitor (14) is 100 - 800 UF.

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