Stepping motor with high connection stability

Abstract

The utility model belongs to novel motor field discloses the stepping motor that connection stability is high, its structure includes stator subassembly, rotor subassembly and the shell, rotor subassembly rotates in the center of stator subassembly, stator subassembly and rotor subassembly are arranged in the inside of shell, is equipped with a wire protection box in the upper end edge of shell, is equipped with the terminal of wiring in the wire protection box, and the input and output of terminal of wiring are perpendicular with the rotation axis of rotor subassembly, are used for reducing the disturbance that rotor subassembly produces along the vertical direction when rotating, simultaneously, the input is designed on the stator subassembly close, reduces the vibration distance that produces under the environment of high frequency vibration, thereby keeps the stable electric connection.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of stepper motor field, more specifically, it relates to the stepper motor of high connection stability. BACKGROUND

[0002] The input end and the output end structure and the setting mode of wiring terminal in the existing stepper motor are all L-shaped structure, for example, prior art CN 219477754U and CN214013958U.The feature is that the output end and the enameled wire on the stator are welded, the input end and the external terminal are plug-in communication, and the input end is used to introduce current into the motor.Most of the prior art solutions are horizontally arranged input end, which is perpendicular to the rotating axis of rotor, and the output end and the input end are vertically arranged, which is parallel to the rotating axis of rotor.

[0003] After long-term use, it is found that the defect of this structure is prone to cause product electrical connection failure, resulting in false welding.Especially in the stepper motor with high power, the failure rate is higher, and false welding leads to faster motor temperature rise.After analysis, it is found that the reason for the electrical connection failure is the design defect of the output end of the wiring terminal.Firstly, the output end is away from the axis of the rotor, and is arranged parallel to the axis.When the rotor rotates, the stator will certainly vibrate in the shell under the action of electromagnetic force and load reaction force (this is also the basic reason for the vibration and noise of the motor), and the rotor rotates, which causes the stator and the shell to vibrate laterally around the axis in the horizontal plane, because the output end is arranged along the direction of the rotor axis, the farther the output end is from the stator in the length direction, the greater the angle of the output end shaking (in the case of a certain angle, the farther the position is from the center, the greater the amplitude), and the diameter of the enameled wire is generally small, so if it is too tight during manual welding, it is more prone to false welding or enameled wire breakage under the condition of high-frequency vibration. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing the stepper motor of high connection stability to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following scheme: including stator assembly, rotor assembly and shell, the rotor assembly rotates in the center of the stator assembly, the stator assembly and the rotor assembly are arranged inside the shell, a wire protection box is arranged at the upper end edge of the shell, characterized in that: a wiring terminal is arranged in the wire protection box, the input end and the output end of the wiring terminal are perpendicular to the rotating axis of the rotor assembly, for reducing the disturbance generated by the rotor assembly in the vertical direction when rotating, and maintaining stable connection.

[0006] In the above description, as a preferred scheme, the wiring terminal is U-shaped structure, and the two straight edges are input end and output end respectively.

[0007] In the above description, as a preferred solution, the U-shaped opening of the terminal is directed to the outside of the casing.

[0008] In the above description, as a preferred solution, the input end is arranged above the output end.

[0009] In the above description, as a preferred solution, the input end is provided with a stepped bending structure.

[0010] In the above description, as a preferred solution, the stator assembly comprises an enameled wire and a plastic skeleton.

[0011] In the above description, as a preferred solution, the plastic skeleton is provided with a terminal fixing seat above.

[0012] In the above description, as a preferred solution, the terminal fixing seat comprises a fixing hole, a fixing groove and a blocking block, the fixing hole is arranged below the blocking block, and the fixing groove is arranged above the blocking block.

[0013] In the above description, as a preferred solution, the enameled wire is electrically connected with the output end.

[0014] In the above description, as a preferred solution, the wire protection box is provided with a terminal hole and a slot, the terminal hole is arranged in the slot, and the wire protection box is further provided with a plug seat.

[0015] The beneficial effects of the present application are as follows: by arranging the input end and the output end of the terminal to be perpendicular to the rotating axis of the rotor assembly, the disturbance generated by the rotor assembly in the vertical direction during rotation is reduced, and by arranging the input end close to the stator assembly, the vibration distance generated in a high-frequency vibration environment is reduced, thereby maintaining stable electrical connection. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Overall exploded structure diagram of the embodiment

[0017] Figure 2 Combined schematic diagram of the stator assembly and the wire protection box

[0018] Figure 3 Exploded schematic diagram of the stator assembly and the wire protection box

[0019] Figure 4 Schematic diagram of the direction of the terminal of the stator assembly structure

[0020] Figure 5 Schematic diagram of the rear of the terminal of the stator assembly structure

[0021] Figure 6 Exploded schematic diagram of the stator assembly structure

[0022] Figure 7It is terminal fixed seat structure schematic view

[0023] Figure 8 It is terminal structure schematic view

[0024] Figure 9 It is wire protection box structure schematic view

[0025] 1 is stator assembly, 2 is rotor assembly, 3 is casing, 4 is wire protection box, 401 is terminal hole, 402 is slot, 403 is buckle, 5 is terminal fixed seat, 501 is fixed hole, 502 is fixed slot, 503 is blocking block, 6 is terminal, 601 is input end, 602 is output end, 603 is bending part, 7 is enameled wire, 8 is plug base, 9 is plastic framework. DETAILED DESCRIPTION

[0026] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0027] The utility model aims at realizing through the following mode:

[0028] Embodiment (reference Figure 1 ), general microstep motor mainly consists of 3 parts, is stator assembly 1, rotor assembly 2 and casing 3 respectively.Stator assembly 1 includes plastic framework 9 and enameled wire 7, and enameled wire 7 is wound on plastic framework 9 to form enameled coil, and rotor assembly 1 includes rotating shaft and silicon steel sheet and other materials, and stator assembly 1 and rotor assembly 2 are rotated under the action of electromagnetic force, to drive other loads.

[0029] The technical scheme of the embodiment is to improve the defects in the prior art, and the terminal is designed as a U-shaped structure (reference Figure 4 , 5, 6) placed laterally, so that the input end 601 and the output end 602 of the terminal 6 are perpendicular to the rotation axis of the rotor assembly 2.This avoids the defects in the prior art, in which the output end 602 is parallel to the rotation axis of the rotor assembly 2 and is away from the stator assembly 1, and then the enameled wire 7 is welded on the output end 602.This results in that if the stator assembly 1 produces slight vibration, it will cause a large angular change of the output end 602.However, the output end 602 is designed to be perpendicular to the rotation axis of the rotor assembly 2, so that this problem does not occur.Even if the stator assembly 1 produces slight vibration, the displacement change of the output end 602 is also very slight without the lever effect.

[0030] In order to further improve the connection stability of the welding position, the input end 601 is arranged above the output end 602, and then the output end 602 is closer to the stator assembly 1, so that the displacement change of the output end 602 is more slight and synchronous with the stator assembly 1.

[0031] (Reference Figure 2 , 3) The terminal fixing seat 5 is arranged above the plastic framework 9 and is used for fixing the connecting terminal 6. The plastic framework 9 and the terminal fixing seat 5 are integrally formed. The fixing hole 501 and the fixing groove 501 are arranged on the terminal fixing seat 5. The fixing hole 501 is a through hole structure. The output end 602 passes through the fixing hole 501 and is connected to the enameled wire 7 in a welding mode and is used for inputting current to the enameled wire 7. (Reference Figure 5 , 6, 7, 8) The fixing groove 501 is a groove structure and is convenient for the input end 601 to be embedded into the groove. The blocking block 503 is arranged below the fixing groove 501. Correspondingly, the input end 601 is designed as a stepped bending part 603. The bending part 603 cooperates with the blocking block 503 to avoid the input end 601 from being deformed and being inwardly retracted under the action of external force when the external connecting structure is inserted, so that the external force is conducted to the output end 602.

[0032] (Reference Figure 9 ) The wire protection box 4 is further arranged on the periphery of the terminal fixing seat 5. The terminal hole 401 is arranged on the wire protection box 4 and is convenient for the head of the input end 601 to pass out of the hole. The insertion groove 402 in the inner recess shape is further arranged on the outer side of the wire protection box 4. The insertion groove 402 is used for accommodating the plug seat 8. The plug seat 8 is provided with the through holes arranged at intervals. Each through hole accommodates one input end 601. The plug seat 8 is inserted by the external connecting structure and can prevent the short circuit phenomenon caused by the mutual contact between the input ends 601. The buckles 403 are further arranged on the left and right sides of the wire protection box 4 and are used for clamping the two sides of the terminal fixing seat 5, so that the terminal fixing seat 5 and the wire protection box 4 are integrated. Thus, the overall structure of the stepping motor is realized.

[0033] The above is the further detailed description of the utility model in combination with the specific preferred embodiments. The specific implementation of the utility model cannot be limited to these descriptions. For the ordinary skilled in the art to which the utility model belongs, some simple deductions or replacements can be made without departing from the concept of the utility model and all of them shall be regarded as the protection range of the utility model.

Claims

1. A stepper motor with high connection stability, comprising a stator assembly, a rotor assembly, and a housing, wherein the rotor assembly rotates at the center of the stator assembly, the stator assembly and the rotor assembly are disposed inside the housing, and a cable guard box is provided at the upper edge of the housing, characterized in that: The wire protection box is provided with a terminal, the input end and the output end of the terminal are perpendicular to the rotating axis of the rotor assembly, and the terminal is used for reducing the disturbance generated by the rotor assembly in the vertical direction during rotation and maintaining stable connection.

2. The stepping motor with high connection stability according to claim 1, wherein: The terminal is in U-shaped structure, and the two straight edges are respectively the input end and the output end.

3. The step motor with high connection stability according to claim 2, wherein: The U-shaped opening of the terminal faces the outside of the shell.

4. The stepping motor with high connection stability according to claim 3, wherein: The input end is arranged above the output end.

5. The step motor with high connection stability according to claim 4, wherein: The input end is provided with a stepped bending structure.

6. The step motor with high connection stability according to claim 1, wherein: The stator assembly comprises an enameled wire and a plastic framework.

7. The step motor having high connection stability according to claim 6, wherein: The terminal fixing seat is arranged above the plastic framework.

8. The step motor having high connection stability according to claim 7, wherein: The terminal fixing seat comprises a fixing hole, a fixing groove and a blocking block, the fixing hole is arranged below the blocking block, and the fixing groove is arranged above the blocking block.

9. The high connection stability stepping motor as claimed in claim 8, wherein: The enameled wire is electrically connected with the output end.

10. The step motor having high connection stability according to claim 9, wherein: The wire protection box is provided with a terminal hole and a slot, the terminal hole is arranged in the slot, and the wire protection box is further provided with a plug seat.

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