Stepping motor with heat dissipation function

Abstract

The utility model belongs to the technical field of stepping motors, and particularly relates to a stepping motor with a heat dissipation function, which comprises a central shaft and a rotor core sleeved on the outer side of the central shaft. The stator assembly comprises a stator iron core which sleeves the outer side of the rotor iron core; the heat dissipation assembly comprises a shaft sleeve arranged on the outer side of the center shaft in a sleeving mode and a plurality of blades arranged on the outer side of the shaft sleeve at equal intervals. Wherein the central shaft is suitable for driving the shaft sleeve and the plurality of blades to rotate during rotation so as to enable the plurality of blades to dissipate heat of the stator assembly and the rotor iron core, the stepping motor with the heat dissipation function dissipates heat through the stator iron core and drives the shaft sleeve and the plurality of blades to rotate during rotation of the central shaft so as to enable the blades to dissipate heat of the stator assembly and the rotor iron core. Therefore, the heat dissipation efficiency is improved, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of stepping motors, and in particular relates to a stepping motor with a heat dissipation function. Background Art

[0002] A stepper motor is a motor that converts electrical pulse signals into corresponding angular displacement or linear displacement. Each time a pulse signal is input, the rotor rotates an angle or moves forward one step. The angular displacement or linear displacement output is proportional to the number of input pulses, and the speed is proportional to the pulse frequency. Therefore, a stepper motor is also called a pulse motor.

[0003] Existing stepper motor heat dissipation usually transfers the heat generated by the coil winding to the insulating protective cover first, then transfers the heat to the stator core through the insulating protective cover, and finally transfers the heat to the external environment for heat dissipation. The heat dissipation efficiency is not high, resulting in the stepper motor being unable to dissipate heat in a timely manner during long-term operation, thereby affecting the motor's service life.

[0004] Therefore, in order to solve the above problems, it is necessary to design a stepper motor with heat dissipation function. Utility Model Content

[0005] The utility model aims to provide a stepper motor with a heat dissipation function to solve the technical problem that the heat dissipation rate of the existing stepper motor is low.

[0006] In order to solve the above technical problems, the utility model provides a stepper motor with heat dissipation function, comprising:

[0007] A central shaft and a rotor core sleeved on the outer side of the central shaft;

[0008] The stator assembly comprises: a stator core sleeved on the outer side of the rotor core;

[0009] The heat dissipation component comprises: a sleeve sleeved on the outside of a central axis and a plurality of blades equidistantly arranged on the outside of the sleeve; wherein

[0010] The central shaft is suitable for driving the shaft sleeve and a plurality of blades to rotate when rotating, so that the plurality of blades dissipate heat to the stator assembly and the rotor core.

[0011] Furthermore, a convex block is provided on the arc surface of the central axis;

[0012] The shaft sleeve is provided with a recess; wherein

[0013] The projection is matched with the recess.

[0014] Furthermore, a front end cover is connected to one side of the stator core;

[0015] The front end cover is provided with a plurality of air inlet holes;

[0016] The other side of the stator core is connected to a rear end cover;

[0017] A plurality of exhaust holes are arranged on the side of the rear end cover.

[0018] Furthermore, the front end cover is provided with a first placement portion; wherein

[0019] A first bearing is disposed in the first placement portion; and

[0020] The first bearing sleeve is arranged on the central shaft;

[0021] The central axis passes through the front end cover.

[0022] Furthermore, the rear end cover is provided with a second placement portion; wherein

[0023] A second bearing is disposed in the second placement portion; and

[0024] The second bearing sleeve is arranged on the central shaft;

[0025] The central axis passes through the rear end cover.

[0026] Furthermore, the rear end cover is provided with a receiving portion; wherein

[0027] The receiving portion is suitable for receiving a blade.

[0028] Furthermore, the front end cover is provided with at least two first through holes;

[0029] The stator core is provided with at least two second through holes;

[0030] The rear end cover is provided with at least two threaded holes;

[0031] Each of the first through holes is arranged concentrically with the corresponding second through hole and the corresponding threaded hole.

[0032] The beneficial effects of the utility model are:

[0033] (I) The utility model drives the shaft sleeve and a plurality of blades to rotate when the central shaft rotates. When the blades rotate, turbulence is generated, so that external air enters from the air inlet, takes away the heat on the rotor core and the stator assembly, and is discharged from the exhaust hole, so that air can circulate and cooperate with the heat dissipation of the stator core and the external air, thereby achieving the effect of improving the heat dissipation efficiency and increasing the service life of the motor.

[0034] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is an exploded stereogram of the preferred embodiment of the utility model as a whole Figure 1 ;

[0038] Figure 2 It is a stereogram of a preferred embodiment of the stator assembly of the utility model;

[0039] Figure 3 It is a stereogram of the preferred embodiment of the whole of the utility model;

[0040] Figure 4 It is an exploded stereogram of the preferred embodiment of the utility model as a whole Figure 2 .

[0041] In the figure:

[0042] Central shaft 1, convex block 11, rotor core 2;

[0043] Stator assembly 3, stator core 31, second through hole 311;

[0044] Heat dissipation component 4, sleeve 41, recess 411, blade 42;

[0045] Front end cover 5, air inlet 51, first placement portion 52, first through hole 53;

[0046] The rear end cover 6, the exhaust hole 61, the second placement portion 62, the receiving portion 63, and the threaded hole 64;

[0047] A first bearing 7 and a second bearing 8 . DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0049] like Figures 1 to 4 As shown, this embodiment provides a stepper motor with heat dissipation function, including:

[0050] A central shaft 1 and a rotor core 2 sleeved on the outside of the central shaft 1; a stator assembly 3, which includes: a stator core 31 sleeved on the outside of the rotor core 2; a heat dissipation assembly 4, which includes: a sleeve 41 sleeved on the outside of the central shaft 1 and a plurality of blades 42 equidistantly arranged on the outside of the sleeve 41; wherein the central shaft 1 is suitable for driving the sleeve 41 and the plurality of blades 42 to rotate when rotating, so that the plurality of blades 42 dissipate heat to the stator assembly 3 and the rotor core 2.

[0051] A protrusion 11 is provided on the arc surface of the central shaft 1; a recess 411 is provided on the sleeve 41; wherein the protrusion 11 is adapted to the recess 411; wherein by providing the protrusion 11 on the central shaft 1 and the recess 411 on the sleeve 41, the effect of increasing the torque is achieved.

[0052] A front end cover 5 is connected to one side of the stator core 31; a plurality of air inlet holes 51 are provided on the front end cover 5; a rear end cover 6 is connected to the other side of the stator core 31; a plurality of exhaust holes 61 are provided on the side of the rear end cover 6; by providing the air inlet holes 51 and the exhaust holes 61, when the blades 42 rotate, external air enters from the air inlet holes 51, takes away the heat on the rotor core 31 and the stator assembly 3, and is then discharged from the exhaust holes 61, so that air can circulate, thereby achieving the effect of heat dissipation.

[0053] The front end cover 5 is provided with a first placement portion 52; wherein the first placement portion 52 is provided with a first bearing 7; and the first bearing 7 is sleeved on the central shaft 1; the central shaft 1 passes through the front end cover 5; by providing the first bearing 7, one end of the central shaft 1 is supported without affecting the rotation of the central shaft 1.

[0054] The rear end cover 6 is provided with a second placement portion 62; wherein the second placement portion 62 is provided with a second bearing 8; and the second bearing 8 is sleeved on the central shaft 1; the central shaft 1 passes through the rear end cover 6; by providing the second bearing 8, the other end of the central shaft 1 is supported without affecting the rotation of the central shaft 1.

[0055] The rear end cover 6 is provided with a receiving portion 63 , wherein the receiving portion 63 is suitable for receiving the blade 42 .

[0056] The front end cover 5 is provided with at least two first through holes 53; the stator core 31 is provided with at least two second through holes 311; the rear end cover 6 is provided with at least two threaded holes 64; wherein each of the first through holes 53 is concentrically arranged with the corresponding second through hole 311 and the corresponding threaded hole 64; wherein four first through holes 53, four second through holes 311 and four threaded holes 64 are each provided, which is most preferred, and the front end cover 5, the stator core 31 and the rear end cover 6 are fixed by bolts, which is most preferred.

[0057] In this embodiment, when the central shaft 1 rotates, the shaft sleeve 41 and the plurality of blades 42 are driven to rotate. When the blades 42 rotate, turbulence is created, so that external air enters from the air inlet 51, takes away the heat on the rotor core 31 and the stator assembly 3, and is then discharged from the exhaust hole 61 to allow air circulation, thereby cooperating with the heat dissipation of the stator core 31 and the external air, thereby achieving the effect of improving the heat dissipation efficiency and increasing the service life of the motor.

[0058] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0059] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0061] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A stepper motor with heat dissipation function, characterized in that: include: A central shaft (1) and a rotor core (2) sleeved outside the central shaft (1); A stator assembly (3) comprising: a stator core (31) sleeved on the outside of a rotor core (2); A heat dissipation component (4) comprising: a shaft sleeve (41) sleeved on the outside of a central shaft (1) and a plurality of blades (42) equidistantly arranged on the outside of the shaft sleeve (41); wherein The central shaft (1) is suitable for driving the shaft sleeve (41) and the plurality of blades (42) to rotate when rotating, so that the plurality of blades (42) dissipate heat from the stator assembly (3) and the rotor core (2).

2. The stepper motor with heat dissipation function according to claim 1, characterized in that: A convex block (11) is provided on the arc surface of the central axis (1); The shaft sleeve (41) is provided with a recess (411); wherein The convex block (11) is adapted to the concave portion (411).

3. The stepper motor with heat dissipation function as claimed in claim 2, characterized in that: A front end cover (5) is connected to one side of the stator core (31); The front end cover (5) is provided with a plurality of air inlet holes (51); The other side of the stator core (31) is connected to a rear end cover (6); A plurality of exhaust holes (61) are provided on the side surface of the rear end cover (6).

4. The stepper motor with heat dissipation function as claimed in claim 3, characterized in that: The front end cover (5) is provided with a first placement portion (52); wherein A first bearing (7) is provided in the first placement portion (52); and The first bearing (7) is sleeved on the central shaft (1); The central axis (1) passes through the front end cover (5).

5. The stepper motor with heat dissipation function as claimed in claim 4, characterized in that: The rear end cover (6) is provided with a second placement portion (62); wherein A second bearing (8) is provided in the second placement portion (62); and The second bearing (8) is sleeved on the central shaft (1); The central axis (1) passes through the rear end cover (6).

6. The stepper motor with heat dissipation function as claimed in claim 5, characterized in that: The rear end cover (6) is provided with a receiving portion (63); wherein The receiving portion (63) is suitable for receiving the blade (42).

7. The stepper motor with heat dissipation function as claimed in claim 6, characterized in that: The front end cover (5) is provided with at least two first through holes (53); The stator core (31) is provided with at least two second through holes (311); The rear end cover (6) is provided with at least two threaded holes (64); wherein Each of the first through holes (53) is arranged concentrically with the corresponding second through hole (311) and the corresponding threaded hole (64).

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