CN220235303U

CN220235303U - Heat abstractor of motor driver

Info

Publication number: CN220235303U
Application number: CN202321953090.7U
Authority: CN
Inventors: 朱卫东; 徐江红; 孙宇豪
Original assignee: Changzhou Nuoqi Microelectronics Technology Co ltd
Current assignee: Changzhou Nuoqi Microelectronics Technology Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2023-12-22
Anticipated expiration: 2033-07-24

Abstract

The utility model discloses a heat dissipating device of a motor driver, which comprises a motor driver shell, a first bolt, a first connecting sheet, a second nut, a first nut, a slot, a fan, a vertical plate, a transverse through hole, a second connecting sheet, a shock pad, a grid plate, a large ventilation pipe and a small ventilation pipe, wherein the bottom of the motor driver shell is provided with a groove with a downward opening, the top of the groove is provided with the large ventilation pipe, the large ventilation pipe is of a trapezoid structure, and the upper end of the large ventilation pipe extends into the motor driver shell; the utility model adopts various heat dissipation modes to reduce the heat generated in the motor driver and improve the working performance of the motor driver.

Description

Heat abstractor of motor driver

Technical Field

The utility model relates to the technical field of motor drive control, in particular to a heat dissipation device of a motor driver.

Background

The motor driver is an important component of the motor system, is a key core of the whole system, and has been developed by various manufacturers to improve the performance of the motor driver.

Because the motor driver can produce more heat in the operation process, heat is piled up inside the motor driver, can lead to the operating efficiency to reduce, makes mistakes easily, has certain potential safety hazard simultaneously. At present, the radiator is externally fixed at the bottom of the casing by using screws, but the screws are corroded and rusted, so that the screws are easy to be rusted and reflected after being used in a wet environment for a period of time, when the radiator needs to be maintained or replaced, the rusted screws are unscrewed to possibly damage the casing, meanwhile, when the fan is disassembled to clean the radiator or a new fan is installed, vibration is generated in the working process of the fan, in order to avoid the vibration, the screws are generally pulled out, the screws are tightly screwed, and after a plurality of operations, the casing is cracked, so that the circuit board of each module inside the motor driver is affected.

Disclosure of Invention

The present utility model is directed to a heat dissipating device for a motor driver, so as to solve the above-mentioned problems.

The utility model provides the following technical scheme: the heat dissipating device of the motor driver comprises a motor driver shell, a first bolt, a first connecting sheet, a second nut, a first nut, a slot, a fan, a vertical plate, a transverse through hole, a second connecting sheet, a shock pad, a grid plate, a large vent pipe and a small vent pipe, wherein the bottom of the motor driver shell is provided with a groove with a downward opening, the top of the groove is provided with the large vent pipe which is in a trapezoid structure, the upper end of the large vent pipe stretches into the motor driver shell, the grid plate is arranged at the top of the large vent pipe, a plurality of small vent pipes are arranged on the grid plate, the small vent pipe is in an inverted funnel shape, one end of the small vent pipe is fixedly connected with the grid plate and stretches into the motor driver shell, one end of the small vent pipe is positioned in the large vent pipe, the fan is positioned under the large vent pipe, the fan shields the large vent pipe, the shock pad is arranged around the fan-out wind surface, the shock pad is abutted on the inner top of the groove, the shock pad is non-fixedly connected with the groove, slots are respectively arranged on the front side and the rear side of the fan, the slots are clamped on the vertical plates, the vertical plates are arranged on the inner top of the groove, a second nut is arranged on the other side of the slots, a first threaded section of the first threaded bolt is inserted into a through hole of the first connecting piece, the first connecting piece is fixedly arranged in the groove, the hole diameter of the through hole of the first connecting piece is matched with the outer diameter of the threaded section of the first threaded bolt, transverse through holes are respectively arranged on the left side wall and the right side wall of the slot, the outer diameter of the screw rod is matched with the hole diameter of the transverse through hole, the screw rod penetrates through the transverse through holes, the left end and the right end of the screw rod respectively penetrate through the through holes of the second connecting piece, the outer diameter of the screw rod is matched with the hole diameter of the second connecting piece, the second connecting piece is arranged on the inner top of the groove, the left end and the right end of the screw rod are respectively provided with a first nut, the screw rod is connected with the first nut through threads, the screw rod is fixed on the second connecting piece and the slot by two nuts.

Preferably, a plurality of first radiating fins and second radiating fins are arranged at the inner top of the groove.

Preferably, the shock pad is in a compressed state when the fan is fixed in the groove.

Preferably, the small ventilation tube is fixed on the grid plate by a fastener and an L-shaped fixing piece.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model adopts various heat dissipation modes to reduce the heat generated in the motor driver and improve the working performance of the motor driver.

2. In the utility model, the first radiating fin and the second radiating fin can promote the bottom of the motor driver to radiate heat.

3. The air flow generated by the fan enters from the large ventilation pipe and the small ventilation pipe, and the large ventilation pipe is of a trapezoid structure, so that the air pressure changes in the process of entering from the large opening of the large ventilation pipe to the small opening, and the temperature of the air entering the motor driver is lower; at the same time, the small ventilation pipe also changes the gas pressure.

4. The grid plate arranged at the small-caliber position of the large ventilation pipe can prevent dust from entering the motor driver.

5. The fan is convenient to detach, and when the fan is damaged and needs to be replaced, the first nut is unscrewed from the screw rod and separated from the second connecting sheet, and the first nut is propped against the second connecting sheet when the first nut is screwed; the first bolts on the upper side and the lower side are unscrewed, the first bolts are unscrewed to be separated from the second nuts, the whole fan can be taken down from the grooves, and the problem that the screws cannot be smoothly disassembled due to rust when the screws are directly fixed by the screws in the prior art can be avoided.

6. In the utility model, two slots of the fan are inserted into the vertical plate, so that the through holes on the vertical plate and the transverse through holes on the left side and the right side of the slot are mutually communicated on the same axis, and after the screw rod passes through the two connecting pieces II and the slot, the screw rod is screwed into the nut II by the bolt I, so that the fan can be fixed, and the fan can smoothly cover the large ventilation pipe; the first bolt penetrates through the first connecting sheet and enters the second nut, the first bolt is screwed, the cap of the first bolt props against the first connecting sheet, the fixing firmness of the fan can be improved, and meanwhile the damping sheet is in an extrusion state.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a top view of a groove;

FIG. 3 is a block diagram of a fan and a shock pad;

FIG. 4 is a top view of a fan and shock pad;

FIG. 5 is a schematic diagram of a slot and screw configuration;

FIG. 6 is a block diagram of a groove;

FIG. 7 is a cross-sectional view of a section A-A of the groove;

in the figure: 1. motor driver shell 2, bolt one, 3, connection piece one, 4, nut two, 5, nut one, 6, slot, 7, fan, 8, riser, 9, horizontal through-hole, 10, connection piece two, 11, shock pad, 12, grid plate, 13, big ventilation pipe, 14, little ventilation pipe, 15, first radiating fin, 16, second radiating fin, 17, recess, 18, screw rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The technical scheme of the utility model is further elaborated below by referring to the drawings in the specification and the specific embodiments.

Embodiment one:

the application provides a heat abstractor of motor driver, including motor driver shell 1, bolt one 2, connection piece one 3, nut two 4, nut one 5, slot 6, fan 7, riser 8, horizontal through-hole 9, connection piece two 10, shock pad 11, grid plate 12, big ventilation pipe 13 and little ventilation pipe 14, motor driver shell 1 bottom sets up opening recess 17 down, and big ventilation pipe 13 has been seted up at recess 17 interior top, and big ventilation pipe 13 is trapezium structure, and big ventilation pipe 13's upper end goes deep into motor driver shell 1 in, and grid plate 12 is installed at big ventilation pipe 13's top, and big ventilation pipe 13 small-bore position installation grid plate 12 can avoid the dust to enter into inside the motor driver, installs a plurality of little ventilation pipe 14 on the grid plate 12, and little ventilation pipe 14 is the funnel-shaped of inversion, and the one end and the grid plate 12 of little ventilation pipe 14 are fixed to link to each other and go deep into motor driver shell 1, and little ventilation pipe 14 is fixed on grid plate 12 with fastener and L stationary blade, and the one end of little 14 big mouthful is located big ventilation pipe 13, and the fan 7 is located big ventilation pipe 13 below, and 7 is located big ventilation pipe 13 and is located the fan 13 and is located the recess 7 and is fixed at the shock pad 11 when the recess is all around the recess is pressed, and is in the shock pad 11, the shock pad is fixed to be in the recess 17, and is in the shock pad 11. The shock pad 11 plays a role in shielding dust to a certain extent; the front side and the rear side of the fan 7 are respectively provided with a slot 6, the slot 6 is clamped on the vertical plate 8, the vertical plate 8 is arranged at the inner top of the groove 17, the other side of the slot 6 is provided with a second nut 4, the second nut 4 is connected with a first bolt 2 in a threaded manner, a threaded section of the first bolt 2 is inserted into a through hole of the first connecting piece 3, the first connecting piece 3 is fixedly arranged in the groove 17, the hole diameter of the through hole of the first connecting piece 3 is matched with the outer diameter of the threaded section of the first bolt 2, the left side wall and the right side wall of the slot 6 are respectively provided with a transverse through hole 9, the outer diameter of a screw 18 is matched with the hole diameter of the transverse through hole 9, the left end and the right end of the screw 18 are respectively penetrated into a through hole of the second connecting piece 10, the outer diameter of the screw 18 is matched with the hole diameter of the second connecting piece 10, the second connecting piece 10 is arranged at the inner top of the groove 17, the left end and the right end of the screw 18 are respectively provided with a first nut 5, the screw 18 is connected with the first nut 5 in a threaded manner, and the first nut 5 is fixedly arranged on the second nut 5.

The small ventilation pipe 14 forms a funnel-shaped air flow passage, the large ventilation pipe 13 forms a stepped air flow passage, and the angles of the air flow passages are different.

The hole diameter of the grid plate 12 is the same as the small caliber of the small ventilation pipe 14.

The screw 18 has opposite threads at the left and right ends.

Specifically, as shown in fig. 1, a plurality of first heat dissipation fins 15 and second heat dissipation fins 16 are arranged at the top in the groove 17, and the first heat dissipation fins 15 and the second heat dissipation fins 16 can promote heat dissipation at the bottom of the motor driver.

Specifically, as shown in fig. 2, after the motor driver is electrified, the air flow generated by the start rotation of the fan 7 enters from the large ventilation pipe 13 and the small ventilation pipe 14, and as the large ventilation pipe 13 is of a trapezoid structure, the air pressure changes in the process of entering from the large opening of the large ventilation pipe 13 to the small opening, so that the temperature of the air entering the motor driver is lower; meanwhile, the small ventilation pipe 14 also changes the gas pressure, and the small ventilation pipe is combined with the first radiating fins 15 and the second radiating fins 16 to form a plurality of radiating modes so as to reduce the heat generated in the motor driver and improve the working performance of the motor driver.

Specifically, as shown in fig. 1, 2, 3, 4, 5 and 6, in the present utility model, the fan 7 is convenient to disassemble, when the fan 7 is damaged and needs to be replaced, the first nut 5 on the left and right sides is unscrewed, so that the first nut 5 is unscrewed from the screw 18 and separated from the second connecting piece 10, and when the first nut 5 is screwed, the first nut 5 is propped against the second connecting piece 10; the bolts I2 on the upper side and the lower side are unscrewed, the bolts I2 are unscrewed from the nuts II 4, the fan 7 can be wholly taken down from the groove 17, and the problem that the screws cannot be smoothly disassembled due to rust caused by the fact that the screws are directly fixed by the screws in the prior art can be avoided; in the utility model, two slots 6 of a fan 7 are inserted into a vertical plate 8, so that through holes on the vertical plate 8 and transverse through holes 9 on the left side and the right side of the slot 6 are mutually communicated on the same axis, a screw 18 passes through two connecting pieces II 10 and the slot 6, and then is screwed into a nut II 4 by a bolt I2, so that the fan 7 can be fixed, and the fan 7 smoothly covers a large ventilation pipe 13; the first bolt 2 passes through the first connecting sheet 3 and enters the second nut 4, the first bolt 2 is screwed, the cap of the first bolt 2 is propped against the first connecting sheet 3, the fixing firmness of the fan 7 can be improved, and meanwhile, the damping sheet is in an extrusion state.

Claims

1. The utility model provides a heat abstractor of motor drive, includes motor drive shell (1), bolt one (2), connection piece one (3), nut two (4), nut one (5), slot (6), fan (7), riser (8), horizontal through-hole (9), connection piece two (10), shock pad (11), grid board (12), big ventilation pipe (13), little ventilation pipe (14) and recess (17), its characterized in that: the motor driver shell (1) bottom sets up recess (17) of opening downward, large ventilation pipe (13) have been seted up at recess (17) inner top, large ventilation pipe (13) are trapezium structure, large ventilation pipe (13)'s upper end is gone into in motor driver shell (1), grid plate (12) are installed at large ventilation pipe (13)'s top, install a plurality of little ventilation pipes (14) on grid plate (12), little ventilation pipe (14) are the funnel-shaped of inversion, the one end and grid plate (12) of little ventilation pipe (14) inlet is fixed link to each other and go into motor driver shell (1), the one end of little ventilation pipe (14) inlet is located large ventilation pipe (13), fan (7) are located large ventilation pipe (13) under, fan (7) shelter from large ventilation pipe (13), all install shock pad (11) around fan (7) air-out face, shock pad (11) conflict in recess (17) top, shock pad (11) and recess (17) are non-fixedly connected, respectively install slot (6) in the both sides around fan (7), install slot (6) on slot (8) and install on two side vertical plate (4) screw nut (4) in slot (4), the threaded section of the first bolt (2) is inserted into the through hole of the first connecting sheet (3), the first connecting sheet (3) is fixedly installed in the groove (17), the hole diameter of the first connecting sheet (3) is matched with the outer diameter of the threaded section of the first bolt (2), the transverse through holes (9) are respectively formed in the left side wall and the right side wall of the slot (6), the outer diameter of the screw rod (18) is matched with the hole diameter of the transverse through holes (9), the screw rod (18) penetrates through the transverse through holes (9), the left end and the right end of the screw rod (18) respectively penetrate through the through holes of the second connecting sheet (10), the outer diameter of the screw rod (18) is matched with the hole diameter of the second connecting sheet (10), the second connecting sheet (10) is installed at the inner top of the groove (17), the first nuts (5) are installed at the left end and the right end of the screw rod (18), the screw rod (18) is connected with the first nuts (5) through threads, and the first nuts (5) fix the screw rod (18) on the second connecting sheet (10) and the slot (6).

2. A heat sink for a motor drive as defined in claim 1, wherein: the inner top of the groove (17) is provided with a plurality of first radiating fins (15) and second radiating fins (16).

3. A heat sink for a motor drive as defined in claim 1, wherein: when the fan (7) is fixed in the groove (17), the shock pad (11) is in a pressed state.

4. A heat sink for a motor drive as defined in claim 1, wherein: the small ventilation pipe (14) is fixed on the grid plate (12) by using a fastener and an L-shaped fixing piece.