Micro motor with good heat dissipation effect

Abstract

The utility model discloses a micro motor with a good heat dissipation effect, and relates to the technical field of micro motors, the micro motor with the good heat dissipation effect comprises a heat dissipation housing, the heat dissipation housing is provided with a metal housing with a one-way opening, the side surface of the metal housing is provided with air inlet holes in an annular array mode, and the side surface of each air inlet hole is provided with a dust cover; the dustproof cover is fixedly connected to the outer side of the metal shell, and an air inlet gap is formed in the side face of the metal shell and communicates with the inner side of the air inlet hole. Air outlets are formed in the bottom of the metal shell in an annular array mode; according to the utility model, external airflow enters through the air inlet holes formed in the side surface of the metal shell and is matched with the rotating cooling fan to discharge high-temperature airflow generated inside from the air outlet, and the dustproof cover is arranged on the outer side of each air inlet hole, so that the probability that dust enters the inner side of the metal shell is reduced; heat dissipation is guaranteed, and meanwhile normal rotation of the micro motor is prevented from being affected by dust.

Description

TECHNICAL FIELD

[0001] The utility model relates to micro motor technical field, specifically a micro motor that heat dissipation effect is good. BACKGROUND

[0002] Micro motor is a kind of small size, power is usually below hundreds of watts motor, it is a kind of electric energy conversion mechanical energy device, plays a key role in many precision equipment and small electronic products, wherein micro stepping motor is also widely used in household appliance a kind of micro motor, stepping micro motor is a kind of electric pulse signal conversion angular displacement or linear displacement motor, its feature is that displacement can be accurately controlled, every input pulse signal, motor will rotate according to fixed step angle.

[0003] However, in practice, people have noticed that the magnetic steel will appear the phenomenon of heating when cutting the magnetic induction line for a long time, since the internal structure size of micro motor is small, therefore, the internal components of micro motor are compact, which will lead to the heat around the magnetic steel cannot dissipate quickly, thereby causing high temperature in the internal of micro motor, and long time high temperature will also cause micro motor to be damaged. UTILITY MODEL CONTENTS

[0004] The utility model discloses a micro motor that heat dissipation effect is good, utilize the air inlet hole of metal shell side, make external airflow enter the inboard of metal shell, cooperate with the heat dissipation fan of rotation, make internal high temperature airflow pass through air outlet and exclude, thereby increase the heat dissipation effect of the micro motor when using. To solve the technical problem proposed in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of micro motor that heat dissipation effect is good, including heat dissipation shell, heat dissipation shell has the metal shell of one-way opening, and the side of metal shell is annular array and is provided with air inlet hole, the side of each air inlet hole is equipped with dust cover;

[0007] Dust cover is fixedly connected to the outside of metal shell, and the side of metal shell is provided with air inlet gap, and air inlet gap is communicated with the inboard of air inlet hole;

[0008] The bottom of metal shell is annular array and is provided with air outlet, and the positioning flap is integrally arranged in each air outlet, and the positioning flap and air outlet are vertically arranged.

[0009] As a further technical scheme of the utility model, the inside of the metal shell is also placed with an output shaft, and the bottom of the output shaft is drivingly connected with a center positioning rod, and the end of the metal shell is clamped with a sealing end cover, and the end of the output shaft extends to the upper side of the metal shell through the sealing end cover.

[0010] As a further technical scheme of the utility model, the side of the metal shell is fixedly connected with a wiring waterproof shell, the inside of the metal shell is fixedly connected with a current-carrying coil, the inside of the current-carrying coil is placed with a center positioning rod, and the outside of the center positioning rod is sleeved with a rotating magnetic steel located in the inside of the current-carrying coil.

[0011] As a further technical scheme of the utility model, the bottom of the rotating magnetic steel is annularly arrayed with a locking clamping groove, the lower side of the rotating magnetic steel is connected with a cooling fan, and the end of the center positioning rod extends through the rotating magnetic steel and the cooling fan.

[0012] As a further technical scheme of the utility model, the cooling fan comprises a connecting disc in contact with the bottom of the rotating magnetic steel, the rotating magnetic steel is annularly arrayed with an air hole, and the upper side of the connecting disc is integrally provided with a positioning protrusion corresponding to the locking clamping groove.

[0013] As a further technical scheme of the utility model, the positioning protrusion is inserted and matched in the locking clamping groove, the bottom of the connecting disc is fixedly connected with an arc-shaped fan blade in an annular array, and the arc-shaped fan blade is located in the inside bottom of the current-carrying coil.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses, through the insertion and cooperation between locking clamping groove and positioning protrusion, make rotating magnetic steel drive cooling fan rotation when rotating, and in the rotating process, the arc-shaped fan blade that cooling fan is arranged in annular array can make airflow flow from top to bottom, utilize external airflow to make the hot airflow in the inside of metal shell flow out fast, thereby improve the heat dissipation effect of the micro motor;

[0016] The utility model discloses, external airflow enters through the air inlet that the side of metal shell sets up, cooperate with the cooling fan of rotating, export the high temperature airflow generated in the inside from the air outlet, and the outside of every air inlet is provided with dust cover, reduce the probability that dust enters the inside of metal shell, guarantee the heat dissipation while preventing dust from affecting the normal rotation of micro motor;

[0017] The utility model discloses, the bottom of metal shell is fixedly connected with the positioning folded plate in annular array, utilize the position of supporting of positioning folded plate to current-carrying coil, and the inside of cooling fan located in the bottom of current-carrying coil can play the protection effect to cooling fan. ACCURACY OF DRAWINGS

[0018] Figure 1 is the use state structural schematic diagram of the utility model.

[0019] Figure 2 is the bottom structure schematic diagram of the utility model Figure 1 .

[0020] Figure 3 is the internal structure schematic diagram of the utility model Figure 2 .

[0021] Figure 4 is the partial structure schematic diagram of the utility model Figure 3 .

[0022] Figure 5 is the partial structure schematic diagram of the utility model Figure 4 .

[0023] Figure 6 is the local enlarged schematic diagram of the utility model Figure 5 .

[0024] Figure 7 is the three-dimensional structure schematic diagram of the heat dissipation fan in the utility model.

[0025] Figure 8 is the three-dimensional structure schematic diagram of the heat dissipation shell in the utility model.

[0026] In the drawing:

[0027] Sealing end cover-1, output shaft-2, heat dissipation shell-3, metal shell-31, air inlet hole-32, dust cover-33, air outlet-34, positioning flap-35, wiring waterproof shell-4, power coil-5, heat dissipation fan-6, connecting disc-61, air hole-62, positioning protrusion-63, arc-shaped fan blade-64, center positioning rod-7, rotating magnetic steel-8, locking clamping groove-81. Specific implementation

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Please refer to Figures 1-8The utility model discloses a micro motor that has good heat dissipation, comprising a heat dissipation shell 3, the heat dissipation shell 3 has the metal shell 31 of one -way opening, and the side of metal shell 31 is ring array type and is provided with the air inlet hole 32, every air inlet hole 32 side is equipped with the dust cover 33,

[0030] The dust cover 33 is fixedly connected to the outer side of the metal shell 31, and the side of the metal shell 31 is provided with an air inlet gap, and the air inlet gap is in communication with the inner side of the air inlet hole 32.

[0031] The bottom of the metal shell 31 is ring array type and is provided with an air outlet 34, and the positioning flaps 35 are integrally arranged in each air outlet 34, and the positioning flaps 35 and the air outlet 34 are vertically arranged.

[0032] In the embodiment, the inner side of the metal shell 31 is also placed with an output shaft 2, and the bottom of the output shaft 2 is drivingly connected with a center positioning rod 7, and the end of the metal shell 31 is clamped with a sealing end cover 1, and the end of the output shaft 2 extends to the upper side of the metal shell 31 through the sealing end cover 1.

[0033] Further, the side of the metal shell 31 is fixedly connected with a wiring waterproof shell 4, the inner side of the metal shell 31 is fixedly connected with a power coil 5, the inner side of the power coil 5 is placed with the center positioning rod 7, and the outer side of the center positioning rod 7 is sleeved with a rotating magnetic steel 8 located in the inner side of the power coil 5.

[0034] By adopting the above technical scheme, the external airflow enters through the air inlet hole 32 arranged on the side of the metal shell 31, cooperates with the rotating heat dissipation fan 6, and the high-temperature airflow generated in the interior is discharged from the air outlet 34, and the outer side of each air inlet hole 32 is provided with the dust cover 33, so that the probability of dust entering the inner side of the metal shell 31 is reduced, and the normal rotation of the micro motor is ensured while the heat dissipation is ensured

[0035] Further, the bottom of the rotating magnetic steel 8 is ring array type and is provided with a locking clamping groove 81, the lower side of the rotating magnetic steel 8 is connected with the heat dissipation fan 6, and the end of the center positioning rod 7 penetrates the rotating magnetic steel 8 and the heat dissipation fan 6.

[0036] Further, the heat dissipation fan 6 comprises a connecting disc 61 in contact with the bottom of the rotating magnetic steel 8, the rotating magnetic steel 8 is ring array type and is provided with an air hole 62, and the upper side of the connecting disc 61 is integrally provided with a positioning protrusion 63 corresponding to the locking clamping groove 81.

[0037] Specifically, the positioning protrusion 63 is inserted and matched in the locking clamping groove 81, the bottom of the connecting disc 61 is fixedly connected with an arc-shaped fan blade 64 in a ring array type, and the arc-shaped fan blade 64 is located at the inner bottom of the power coil 5.

[0038] By adopting the above technical scheme, the rotating magnetic steel 8 drives the cooling fan 6 to rotate through the plug-in cooperation between the locking clamping groove 81 and the positioning protrusion 63, and in the rotating process, the arc-shaped fan blades 64 arranged in an annular array in the cooling fan 6 can make the airflow flow from top to bottom, so that the external airflow is used to quickly flow out of the hot airflow on the inner side of the metal shell 31, thereby improving the heat dissipation effect of the micro motor.

[0039] Further, the bottom of the center positioning rod 7 is movably connected with the bottom of the metal shell 31 through the connecting disc 61 and the arc-shaped fan blades 64, and when the rotating magnetic steel 8 rotates on the outer side of the center positioning rod 7, the arc-shaped fan blades 64 are driven to rotate through the cooperation between the positioning protrusion 63 and the locking clamping groove 81, and the airflow flow speed is accelerated through the rotating arc-shaped fan blades 64, thereby improving the heat dissipation effect.

[0040] Further, the upper portion of the positioning folded plate 35 is in contact with the energized coil 5, the energized coil 5 is supported by the positioning folded plate 35, and the position of the energized coil 5 in the metal shell 31 is fixed through the cooperation between the sealing end cover 1 at the end of the metal shell 31.

[0041] Specifically, the upper portion of the rotating magnetic steel 8 is fixedly connected with a driving gear, the bottom of the output shaft 2 is fixedly connected with a driven gear, and the driving gear and the driven gear are meshed with each other, so that the rotating magnetic steel 8 drives the output shaft 2 to rotate through the cooperation between the driving gear and the driven gear.

[0042] The working principle of the utility model is: when in use, first, the energized coil 5 is powered by an external power supply, so that the rotating magnetic steel 8 rotates on the inner side of the center positioning rod 7, the rotating magnetic steel 8 drives the connecting disc 61 to rotate through the cooperation between the locking clamping groove 81 at the bottom and the positioning protrusion 63, and the arc-shaped fan blades 64 at the bottom of the connecting disc 61 accelerate the airflow flow speed after rotating, the external airflow enters the inner side of the metal shell 31 through the cooperation between the air inlet gap on the side of the dust cover 33 and the air inlet hole 32, the airflow flows downward from between the energized coil 5 and the rotating magnetic steel 8, and finally the hot airflow around the rotating magnetic steel 8 flows out from the air outlet 34 at the bottom, thereby improving the heat dissipation effect of the micro motor.

[0043] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0044] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment according to the present specification needs to exhibit each and every characteristic specified in the present specification. The specification can also be described in terms of a single independent technical solution, but this does not mean that each embodiment only contains one independent technical solution. The specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A miniature motor with good heat dissipation, characterized in that: Including heat dissipation shell (3), heat dissipation shell (3) has one-way opening metal shell (31), and the side of metal shell (31) is provided with air inlet hole (32) in annular array, each air inlet hole (32) is provided with dust cover (33) on the side, The dust cover (33) is fixedly connected to the outer side of the metal shell (31), and the side of the metal shell (31) is provided with an air inlet gap, and the air inlet gap is in communication with the inner side of the air inlet hole (32); The bottom of the metal shell (31) is provided with air outlet (34) in annular array, and each air outlet (34) is integrally provided with positioning flap (35), and the positioning flap (35) and the air outlet (34) are vertically arranged.

2. The micro motor with good heat dissipation effect according to claim 1, characterized in that: The inner side of the metal shell (31) is also placed with output shaft (2), and the bottom of the output shaft (2) is drivingly connected with center positioning rod (7), and the end of the metal shell (31) is clamped with sealing end cover (1), and the end of the output shaft (2) extends to the upper side of the metal shell (31) through the sealing end cover (1).

3. The micro motor with good heat dissipation effect according to claim 2, characterized in that: The side of the metal shell (31) is fixedly connected with the wire waterproof shell (4), the inner side of the metal shell (31) is fixedly connected with the power coil (5), and the inner side of the power coil (5) is placed with the center positioning rod (7), and the outer side of the center positioning rod (7) is sleeved with the rotating magnetic steel (8) located in the inner side of the power coil (5).

4. The micro motor with good heat dissipation effect according to claim 3, characterized in that: The bottom of the rotating magnetic steel (8) is provided with locking clamping groove (81) in annular array, and the lower side of the rotating magnetic steel (8) is connected with the cooling fan (6), and the end of the center positioning rod (7) penetrates the rotating magnetic steel (8) and the cooling fan (6).

5. The micro motor with good heat dissipation effect according to claim 4, characterized in that: The cooling fan (6) includes connecting disc (61) in contact with the bottom of the rotating magnetic steel (8), and the rotating magnetic steel (8) is provided with air hole (62) in annular array, and the upper side of the connecting disc (61) is integrally provided with positioning protrusion (63) corresponding to the locking clamping groove (81).

6. The micro motor with good heat dissipation effect according to claim 5, characterized in that: The positioning protrusion (63) is inserted into the locking clamping groove (81), and the bottom of the connecting disc (61) is fixedly connected with arc-shaped fan blade (64) in annular array, and the arc-shaped fan blade (64) is located in the inner bottom of the power coil (5).

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