Hybrid stepping motor

Abstract

The utility model discloses a hybrid stepping motor, and relates to the technical field of stepping motors, the hybrid stepping motor comprises a housing, two ends of the housing are respectively fixedly connected with a front cover and a rear cover; cooling holes for heat dissipation are formed in the inner side of the shell in a rectangular array mode, the two ends of each cooling hole are each provided with a set of screw holes, and every two screw holes form a set along the diagonal line. A heat exporting device is mounted in each cooling hole, sealing end covers are arranged at the two ends of each heat exporting device, and mounting screws are symmetrically arranged on each sealing end cover; according to the utility model, through the mutual cooperation of the cross-shaped positioner and the radiating fins, heat in the cooling holes is quickly dissipated, so that the dissipation speed of the heat on the inner side of the shell is improved, the heat is prevented from being concentrated on the inner side of the shell, and the cross-shaped positioner can also play a positioning role during installation.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of stepping motors, in particular to a hybrid stepping motor. Background Art

[0002] A hybrid stepper motor combines the advantages of permanent magnet and reactive stepper motors. It generates a magnetic field using both permanent magnets and current flowing through the stator windings. Both the stator and rotor have slots, and the stator windings are typically two-phase or multi-phase. When current is applied to the stator windings in a specific sequence, a rotating magnetic field is generated. This field interacts with the magnetic field of the rotor's permanent magnets, causing the rotor to rotate incrementally at a specific step angle.

[0003] However, in practice, people have noticed that due to the relatively compact internal structure of the stepper motor and the small gaps between the structures, the heat generated by the coil during operation is mostly concentrated in these gaps. Due to the small gap spacing, the heat is concentrated and cannot be discharged quickly. In addition, the high external sealing also leads to poor internal heat dissipation. In addition, the insulation material inside the stepper motor will degrade as the temperature rises, affecting the insulation effect. Utility Model Content

[0004] The present utility model aims to provide a hybrid stepper motor that utilizes cooling holes arranged in a rectangular array on its housing to disperse heat within the housing and conduct it into the cooling holes. Heat transfer devices installed in the cooling holes rapidly dissipate the heat, thereby improving the heat dissipation efficiency of the stepper motor. This aims to address the technical problems identified in the aforementioned background art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A hybrid stepping motor comprises a housing, with a front cover and a rear cover fixedly connected to both ends of the housing;

[0007] The inner side of the shell is provided with cooling holes in a rectangular array for heat dissipation. A group of screw holes is provided at both ends of each cooling hole, and the screw holes are arranged in groups of two along the diagonal line.

[0008] A heat exporter is installed in each of the cooling holes. Both ends of the heat exporter are provided with sealing end covers. Each of the sealing end covers is symmetrically provided with mounting screws.

[0009] As a further technical solution of the present invention, the heat exporter includes a cross locator inserted in the cooling hole, and an arc-shaped sealing sheet is integrally provided above the cross locator, and the arc-shaped sealing sheet is attached to the inner side of the cooling hole.

[0010] As a further technical solution of the present invention, the upper portion of the cross locator extends upward to the side of the housing, and a heat sink arranged in a rectangular array is integrally provided above the cross locator, and the bottom of the heat sink is in contact with the side of the housing.

[0011] As a further technical solution of the present invention, the sealing end cover includes an outer end cover fitted on both ends of the shell, and the outer end cover is integrally provided with a symmetrical fixing ear plate, and the end of the mounting screw passes through the fixing ear plate and is threadedly connected to the screw hole.

[0012] As a further technical solution of the present invention, one end of the outer end cover is fixedly connected to an inner plunger, and a cross positioning groove is provided on the inner plunger, wherein the inner plunger is interference fit at both ends of the cooling hole, and the end of the cross locator is inserted into the cross positioning groove.

[0013] As a further technical solution of the present invention, an axial hole is opened on the side of the front cover, and an output shaft is movably connected in the axial hole. The end of the output shaft passes through the axial hole and extends to the inner side of the shell, and a rotor is also fixedly connected to the output shaft.

[0014] As a further technical solution of the present invention, the front cover is provided with receiving grooves in a rectangular array on one side close to the shell, and the rear cover is also provided with receiving grooves in a rectangular array on one side close to the shell, and the sealing end cover is placed in the receiving groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model disperses the heat inside the shell and then conducts it out through the cooling holes formed in a rectangular array on the shell, preventing the heat from being concentrated inside the shell, thereby improving the heat conduction effect of the stepper motor;

[0017] The utility model can quickly dissipate the heat in the cooling holes through the cooperation between the cross positioner and the heat sink, thereby improving the heat dissipation speed inside the shell and preventing the heat from being concentrated inside the shell. The cross positioner can also play a positioning effect during installation.

[0018] In the utility model, the outer end cover is attached to the two ends of the cooling hole by installing screws, and the inner plunger is inserted into the two ends of the cooling hole to seal the two ends of the cooling hole. The arc-shaped sealing sheet is used to ensure the sealing effect of the inner side of the cooling hole, and coolant can also be stored inside the cooling hole for cooling, thereby further improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model in use state.

[0020] Figure 2This utility model Figure 1 Another perspective of the picture.

[0021] Figure 3 This utility model Figure 2 Schematic diagram of the internal structure.

[0022] Figure 4 This utility model Figure 3 A partial enlarged schematic diagram.

[0023] Figure 5 This utility model Figure 3 Schematic diagram of part of the structure.

[0024] Figure 6 This utility model Figure 5 A partial enlarged schematic diagram.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the heat exporter in the utility model.

[0026] Figure 8 This utility model Figure 7 A partial enlarged schematic diagram.

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the sealing end cover in the utility model.

[0028] Figure 10 This utility model Figure 9 Another perspective of the picture.

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the front cover of the utility model.

[0030] In the picture:

[0031] Housing 1, front cover 2, shaft hole 21, receiving groove 22, rear cover 3, output shaft 4, heat exporter 5, cross locator 51, arc-shaped sealing plate 52, heat sink 53, rotor 6, sealing end cover 7, outer end cover 71, fixing ear plate 72, inner plunger 73, cross locating groove 74, stator core 8, cooling hole 9, screw hole 10, mounting screw 11. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-11 The embodiment of the present utility model provides a hybrid stepping motor, comprising a housing 1, with a front cover 2 and a rear cover 3 fixedly connected to both ends of the housing 1;

[0034] The inner side of the housing 1 is provided with cooling holes 9 in a rectangular array for heat dissipation. A group of screw holes 10 is provided at both ends of each cooling hole 9. The screw holes 10 are arranged in groups of two along the diagonal line.

[0035] A heat exporter 5 is installed in each of the cooling holes 9 . Sealing end covers 7 are provided at both ends of the heat exporter 5 . Mounting screws 11 are symmetrically provided on each of the sealing end covers 7 .

[0036] In this embodiment, the heat exporter 5 includes a cross locator 51 inserted into the cooling hole 9 , and an arc-shaped sealing sheet 52 is integrally provided above the cross locator 51 , and the arc-shaped sealing sheet 52 is attached to the inner side of the cooling hole 9 .

[0037] In this embodiment, the upper portion of the cross locator 51 extends upward to the side of the housing 1 , and a heat sink 53 arranged in a rectangular array is integrally provided above the cross locator 51 , and the bottom of the heat sink 53 is in contact with the side of the housing 1 .

[0038] In this embodiment, the sealing end cover 7 includes an outer end cover 71 attached to both ends of the shell 1. The outer end cover 71 is integrally provided with a symmetrical fixing ear plate 72. The end of the mounting screw 11 passes through the fixing ear plate 72 and is threadedly connected to the screw hole 10.

[0039] In this embodiment, one end of the outer end cover 71 is fixedly connected to an inner plunger 73, and a cross positioning groove 74 is provided on the inner plunger 73, wherein the inner plunger 73 is interference fit at both ends of the cooling hole 9, and the end of the cross locator 51 is inserted into the cross positioning groove 74.

[0040] In this embodiment, a shaft hole 21 is opened on the side of the front cover 2, and an output shaft 4 is movably connected in the shaft hole 21. The end of the output shaft 4 passes through the shaft hole 21 and extends to the inner side of the outer shell 1, and a rotor 6 is also fixedly connected to the output shaft 4.

[0041] In this embodiment, the front cover 2 has receiving grooves 22 in a rectangular array on one side close to the outer shell 1 , and the rear cover 3 also has receiving grooves 22 in a rectangular array on one side close to the outer shell 1 , and the sealing end cover 7 is placed in the receiving groove 22 .

[0042] By adopting the above technical solution, the coil will generate heat after being energized. Since the shell 1 is punched with cooling holes 9 in a rectangular array, the heat will be conducted from the weaker places to the cooling holes 9, preventing the heat from being concentrated on the inner side of the shell 1. Then the cross positioner 51 absorbs the heat and transfers it to the heat sink 53 set on the top. Since the heat sink 53 is located on the outside of the shell 1, the flowing air can quickly dissipate the heat on the heat sink 53, thereby improving the heat dissipation efficiency of the stepper motor and preventing the heat from being concentrated on the inner side of the shell 1, which causes the performance of the insulating material to be weakened.

[0043] In this embodiment, the stator core 8 is fixedly connected to the inner side of the housing 1 , and the stator core 8 is distributed on the outer side of the rotor 6 in an annular array.

[0044] In this embodiment, a rubber pad is provided on the outer side of the arc-shaped sealing sheet 52 to further ensure the sealing of the inner side of the cooling hole 9, and a heat dissipation liquid can be placed in the cooling hole 9 to improve the heat dissipation effect.

[0045] The working principle of the present invention is: when in use, first insert the cross locator 51 into the cooling hole 9, at this time the heat sink 5 is located on the outside of the shell 1, then insert the inner plunger 73 at the end of the outer end cover 71 into the two ends of the cooling hole 9, and both ends of the cross locator 51 are plugged into the cross locating groove 74, and coolant can also be placed in the cooling hole 9 for auxiliary heat dissipation according to heat dissipation requirements, then the mounting screw 11 is passed through the fixing ear plate 72 and threaded into the screw hole 10, and the outer end cover 71 is fixed by the mounting screw 11, and the heat in the shell 1 will be conducted from the weaker places to the cooling hole 9 to prevent heat from being concentrated on the inside of the shell 1, and then the cross locator 51 absorbs the heat and transfers it to the heat sink 53 set on the top. Since the heat sink 53 is located on the outside of the shell 1, the flowing air can quickly dissipate the heat on the heat sink 53, thereby improving the heat dissipation efficiency of the stepper motor; the structure is simple and maintenance is very convenient.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0047] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A hybrid stepping motor, characterized in that: It comprises a housing (1), with a front cover (2) and a rear cover (3) fixedly connected to both ends of the housing (1); The inner side of the housing (1) is provided with cooling holes (9) for heat dissipation in a rectangular array, and each cooling hole (9) is provided with a group of screw holes (10) at both ends, and the screw holes (10) are arranged in groups of two along the diagonal line; A heat exporter (5) is installed in each of the cooling holes (9), and sealing end covers (7) are provided at both ends of the heat exporter (5). Mounting screws (11) are symmetrically provided on each of the sealing end covers (7).

2. The hybrid stepping motor according to claim 1, wherein: The heat exporter (5) includes a cross locator (51) inserted into the cooling hole (9), and an arc-shaped sealing sheet (52) is integrally provided above the cross locator (51), and the arc-shaped sealing sheet (52) is attached to the inner side of the cooling hole (9).

3. The hybrid stepping motor according to claim 2, wherein: The upper portion of the cross locator (51) extends upward to the side of the housing (1), and a heat sink (53) arranged in a rectangular array is integrally provided above the cross locator (51), and the bottom of the heat sink (53) is in contact with the side of the housing (1).

4. The hybrid stepping motor according to claim 3, wherein: The sealing end cover (7) includes an outer end cover (71) attached to both ends of the housing (1), and the outer end cover (71) is integrally provided with a symmetrical fixing ear plate (72), and the end of the mounting screw (11) passes through the fixing ear plate (72) and is threadedly connected to the screw hole (10).

5. The hybrid stepping motor according to claim 4, wherein: One end of the outer end cover (71) is fixedly connected to an inner plunger (73), and a cross positioning groove (74) is provided on the inner plunger (73), wherein the inner plunger (73) is interference-fitted at both ends of the cooling hole (9), and the end of the cross locator (51) is inserted into the cross positioning groove (74).

6. The hybrid stepping motor according to claim 5, wherein: A shaft hole (21) is provided on the side of the front cover (2), and an output shaft (4) is movably connected in the shaft hole (21). The end of the output shaft (4) passes through the shaft hole (21) and extends to the inner side of the housing (1), and a rotor (6) is fixedly connected to the output shaft (4).

7. The hybrid stepping motor according to claim 6, wherein: The front cover (2) has receiving grooves (22) formed in a rectangular array on one side close to the housing (1), and the rear cover (3) has receiving grooves (22) formed in a rectangular array on one side close to the housing (1), and the sealing end cover (7) is placed in the receiving groove (22).

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