Stepping motor with compact structure

Abstract

The utility model discloses a stepping motor with a compact structure, and relates to the technical field of stepping motors, the stepping motor with the compact structure comprises a housing, the end portion of the housing is symmetrically provided with extension ear plates, and each extension ear plate is provided with an adjusting groove; detachable stator sets are arranged in the shell in an annular array mode, each detachable stator set is wound with a coil and an insulation sleeve, and the insulation sleeves are located between the detachable stator sets and the coils. The detachable stator group comprises an arc-shaped stator iron core, the side face of the arc-shaped stator iron core is attached to the shell, and a positioning clamping groove is formed in the side, close to the shell, of the arc-shaped stator iron core; according to the utility model, the insulating partition plate is arranged between the two arc-shaped stator iron cores, and the connecting plate at the end part of the insulating partition plate is located at the inner side of the matching groove, so that the coils on the arc-shaped stator iron cores are isolated, the short circuit phenomenon between the adjacent coils caused by the compact structure is prevented, and the safety in use is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of step motor, specifically a compact structure step motor. BACKGROUND

[0002] The compact structure step motor is an open loop control motor which converts electric pulse signals into angular displacement or linear displacement, and is characterized by small overall structure design while ensuring performance, capable of playing a role in limited space, and usually tightly combines stator, rotor and driving circuit and other parts. In this way, the length of connecting lines between parts is reduced, and the possibility of signal transmission loss and interference is reduced.

[0003] However, in practice, it has been noticed that due to the compact structure of the step motor, the gap between the cores is small, so it is difficult to disassemble the stator core and the coil, and generally requires the use of professional tools for disassembly, and a large amount of time is required for replacement of the core or coil, and the distance between the two coils is close, and arc short circuit is prone to occur after the winding is energized, affecting the safety during use. UTILITY MODEL CONTENTS

[0004] The utility model discloses a compact structure step motor, which is composed of an arc-shaped stator core arranged in a ring array, which facilitates the replacement of the stator, and an insulating partition plate is arranged between the two arc-shaped stator cores to prevent short circuit between the adjacent coils due to the compact structure, thereby improving the safety during use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A compact structure step motor comprises a housing, and the end of the housing is symmetrically provided with an extension ear plate, and an adjusting groove is formed in each extension ear plate.

[0007] The housing is provided with a detachable stator group in a ring array, and a coil and an insulating sleeve are wound on each detachable stator group, and the insulating sleeve is located between the detachable stator group and the coil.

[0008] As a further technical scheme of the utility model, the detachable stator group comprises an arc-shaped stator core, the side surface of the arc-shaped stator core is attached to the housing, and a positioning clamping groove is formed on the side of the arc-shaped stator core close to the housing.

[0009] The housing is integrally provided with a positioning clamping plate corresponding to the positioning clamping groove, and the positioning clamping plate is clamped in the positioning clamping groove.

[0010] As a further technical scheme of the utility model, the housing is integrally provided with a limiting protrusion, the limiting protrusion is located at one end of the positioning clamping plate, and the end of the arc-shaped stator core is attached to the limiting protrusion.

[0011] As a further technical scheme of the utility model, the spacer comprises an insulating partition plate, the insulating partition plate is located between the two arc-shaped stator cores, and the end of the insulating partition plate is integrally provided with a baffle and a connecting plate respectively.

[0012] As a further technical scheme of the utility model, the two sides of the arc-shaped stator core are provided with a matching groove connected with the spacer, the two sides of the connecting plate are placed in the inner side of the matching groove, and the connecting plate is fixedly connected with the housing through a screw.

[0013] As a further technical scheme of the utility model, the baffle is attached to the side of the arc-shaped stator core away from the matching groove, and the side of the arc-shaped stator core is inserted between the baffle and the connecting plate.

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

[0015] The utility model discloses the mutual cooperation between the positioning clamping plate and the positioning clamping groove is positioned to the arc-shaped stator core, and the arc-shaped stator core is convenient for the staff to dismantle and replace in the split type, and the structure of the stepping motor is more compact, and the overall size of the stepping motor is reduced.

[0016] The utility model discloses that the insulating partition plate is placed between the two arc-shaped stator cores, and the connecting plate at the end of the insulating partition plate is located in the inner side of the matching groove, and the coil on the arc-shaped stator core is isolated, prevents the short circuit phenomenon between the adjacent coils due to the compact structure, and improves the safety during use.

[0017] The utility model discloses that the insulating partition plate is fixed in the inner side of the housing through a screw, and the baffle at the end of the insulating partition plate is attached to the side of the arc-shaped stator core, so that the two ends of the arc-shaped stator core are inserted between the baffle and the connecting plate, and the arc-shaped stator core is limited. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the utility model in use state.

[0019] Figure 2 It is another view of the utility model in Figure 1 .

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

[0021] Figure 4 It is the internal structure schematic diagram of the utility model inFigure 3 A partial enlarged schematic diagram.

[0022] Figure 5 This utility model Figure 3 Schematic diagram of part of the structure.

[0023] Figure 6 This utility model Figure 5 A partial enlarged schematic diagram.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the shell in the utility model.

[0025] Figure 8 This utility model Figure 7 A partial enlarged schematic diagram.

[0026] In the picture:

[0027] Housing 1, extension ear plate 11, adjustment slot 12, positioning card plate 13, limiting protrusion 14, annular retaining ring 2, rear cover 3, motor rotor 4, detachable stator assembly 5, arc-shaped stator core 51, positioning card slot 52, matching groove 53, coil 6, spacer 7, insulating partition 71, baffle 72, connecting plate 73, insulating sleeve 8. DETAILED DESCRIPTION

[0028] The following will be combined with the 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.

[0029] See also Figures 1-8 The embodiment of the present invention provides a compact stepping motor, comprising a housing 1, wherein the ends of the housing 1 are symmetrically provided with extension ear plates 11, and each of the extension ear plates 11 is further provided with an adjustment slot 12;

[0030] The housing 1 is provided with detachable stator groups 5 in an annular array. A coil 6 and an insulating sleeve 8 are wound around each detachable stator group 5 , and the insulating sleeve 8 is located between the detachable stator group 5 and the coil 6 .

[0031] In this embodiment, the detachable stator assembly 5 includes an arc-shaped stator core 51, the side of the arc-shaped stator core 51 is in contact with the housing 1, and a positioning slot 52 is provided on the side of the arc-shaped stator core 51 close to the housing 1;

[0032] The shell 1 is integrally provided with a positioning clamping plate 13 corresponding to a positioning clamping groove 52, and the positioning clamping plate 13 is clamped in the positioning clamping groove 52.

[0033] In the embodiment, the shell 1 is also integrally provided with a limiting protrusion 14 located at one end of the positioning clamping plate 13, and the end of the arc-shaped stator core 51 is attached to the limiting protrusion 14.

[0034] In the embodiment, the spacer 7 includes an insulating partition plate 71 located between the two arc-shaped stator cores 51, and the end of the insulating partition plate 71 is integrally provided with a baffle 72 and a connecting plate 73.

[0035] In the embodiment, the two sides of the arc-shaped stator core 51 are provided with a matching groove 53 connected with the spacer 7, the two sides of the connecting plate 73 are placed inside the matching groove 53, and the connecting plate 73 is fixedly connected with the shell 1 by screws.

[0036] In the embodiment, the baffle 72 is attached to the side of the arc-shaped stator core 51 away from the matching groove 53, and the side of the arc-shaped stator core 51 is inserted between the baffle 72 and the connecting plate 73.

[0037] By using the above technical scheme, the insulating partition plate 71 and the arc-shaped stator core 51 are arranged in a ring array in the shell 1, and the insulating partition plate 71 and the arc-shaped stator core 51 are arranged at intervals, the assembled stator is convenient to disassemble and maintain, the insulating partition plate 71 is arranged between the two arc-shaped stator cores, which plays a role of insulation, the baffle 72 at the end of the insulating partition plate 71 is attached to the arc-shaped stator core 51, the two sides of the connecting plate 73 are located in the matching grooves 53 at adjacent positions, and the positioning clamping plate 13 inside the shell 1 is inserted into the positioning clamping groove 52 on the side of the arc-shaped stator core 51 to position the arc-shaped stator core 51.

[0038] In the embodiment, an insulating pad is arranged between the shell 1 and the arc-shaped stator core 51 to prevent short circuit of the coil 6 after energization, resulting in electrification of the shell 1, thereby ensuring the insulation effect of the coil 6.

[0039] In the embodiment, the insulating partition plate 71 is located between the two coils 6 to isolate the two adjacent coils 6 and prevent arc short circuit of the adjacent coils 6 after energization due to compact structure.

[0040] In the embodiment, the shell 1 is movably connected with a motor rotor 4, the end of the motor rotor 4 extends to the outside of the shell 1 through the shell 1, and the detachable stator group 5 and the spacer 7 are arranged in a ring array on the side of the motor rotor 4.

[0041] In the embodiment, the end of the shell 1 is sleeved with the rear cover 3, and the outer side of the shell 1 is integrally provided with the annular stop ring 2 corresponding to the rear cover 3, and the end of the rear cover 3 is attached to the annular stop ring 2.

[0042] In the embodiment, the end of the motor rotor 4 away from the shell 1 penetrates the rear cover 3, and the rear cover 3 and the shell 1 are fixedly connected through the screw, so that the connecting part is convenient to disassemble and maintain.

[0043] The working principle of the utility model is: when using, first, winding insulation sleeve 8 on arc stator core 51, then winding coil 6 to arc stator core 51, ensure that insulation sleeve 8 separates coil 6 and arc stator core 51 completely, then place insulation pad along the inner wall of shell 1, place insulation partition plate 71 and arc stator core 51 in annular array mode in shell 1, and insulation partition plate 71 and arc stator core 51 are spaced apart, the baffle 72 at the end of insulation partition plate 71 is attached to arc stator core 51, and the connecting plate 73 is located in the matching recess 53 at the adjacent position on both sides, and at the same time, the positioning clamping plate 13 on the inner side of the shell 1 is inserted into the positioning clamping groove 52 on the side of the arc stator core 51, the position of the arc stator core 51 is positioned, until the end of the arc stator core 51 contacts the limiting protrusion 14, then the connecting plate 73 is fixed to the inner side of the shell 1 by using the screw, then the bearing is installed at the both ends of the motor rotor 4, the motor rotor 4 is placed in the detachable stator group 5, and the end of the motor rotor 4 penetrates the shell 1 and extends to the outer side, finally, the rear cover 3 is sleeved to the end of the shell 1, until the end of the rear cover 3 is attached to the annular stop ring 2, finally, the shell 1 and the rear cover 3 are fixedly connected by using the screw, the structure is simple and compact, and the split type stator is convenient to disassemble and replace.

[0044] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any figure mark in the claims should not be regarded as limiting the involved claims.

[0045] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A compact stepping motor, characterized by: It comprises a housing (1) and a spacer (7), wherein the end of the housing (1) is symmetrically provided with an extension ear plate (11), and each of the extension ear plates (11) is further provided with an adjustment slot (12); A removable stator group (5) is provided in an annular array in the housing (1), a coil (6) and an insulating sleeve (8) are wound around each removable stator group (5), and the insulating sleeve (8) is located between the removable stator group (5) and the coil (6); The detachable stator assembly (5) comprises an arc-shaped stator core (51), the side surface of the arc-shaped stator core (51) is in contact with the housing (1), and a positioning slot (52) is provided on a side of the arc-shaped stator core (51) close to the housing (1); The housing (1) is integrally provided with a positioning card plate (13) corresponding to the positioning card slot (52), and the positioning card plate (13) is snapped into the positioning card slot (52); The spacer (7) comprises an insulating partition (71), the insulating partition (71) is located between the two arc-shaped stator cores (51), and the ends of the insulating partition (71) are respectively integrally provided with a baffle (72) and a connecting plate (73).

2. The compact stepping motor according to claim 1, characterized in that: The housing (1) is also integrally provided with a limiting protrusion (14), the limiting protrusion (14) being located at one end of the positioning clamp (13), and the end of the arc-shaped stator core (51) being in contact with the limiting protrusion (14).

3. The compact stepping motor according to claim 2, characterized in that: Both sides of the arc-shaped stator core (51) are provided with matching grooves (53) connected to the spacer (7), both sides of the connecting plate (73) are placed inside the matching grooves (53), and the connecting plate (73) is fixedly connected to the housing (1) by screws.

4. The compact stepping motor according to claim 3, characterized in that: The baffle (72) is attached to a side of the arc-shaped stator core (51) away from the matching groove (53), and the side surface of the arc-shaped stator core (51) is inserted between the baffle (72) and the connecting plate (73).

Images