Assembly structure of motor rotor assembly and shell

Abstract

The utility model discloses an assembling structure of a motor rotor assembly and a shell, which relates to the technical field of micro motors, and comprises a motor shell, the outer surface of the front end of the motor shell is detachably connected with a front end cover, and the outer surface of the rear end of the motor shell is detachably connected with a rear end cover. According to the assembling structure of the motor rotor assembly and the shell, a rotor center shaft in the rotor body can penetrate through the stabilizing cylinder conveniently when the stabilizing cylinder is used, when the rotor center shaft penetrates through the stabilizing cylinder, a ball body at the front end of the abutting column can be attached to the outer wall of the rotor center shaft, and under the acting force of a first limiting spring, the ball body can abut against the outer wall of the rotor center shaft. When the rotor center shaft rotates, the ball body abuts against the rotor center shaft, the ball body can rotate along with the rotor center shaft when the rotor center shaft rotates, shaking of the rotor center shaft during low-speed rotation can be reduced, abrasion between the rotor center shaft and the shell can be avoided, and stability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to micro motor technical field, concretely relates to a kind of motor rotor assembly and the assembly structure of shell. BACKGROUND

[0002] Micro motor refers to the motor that the diameter is less than 160mm or rated power is less than 750mW, this kind of motor is complete although small in size, the common application size is only ten millimeters to hundreds of millimeters, the application field of micro motor is extensive, commonly used in control system or transmission mechanical load, realize electromechanical signal or energy detection, analytical operation, amplification, execution or conversion etc., in electronic engineering, micro motor plays an important role, especially in the occasion needing precision control and energy conversion.

[0003] Electronic rotor is more important component part in motor, when motor rotor and motor shell are assembled, the front end cover of motor shell needs to be opened, then motor rotor is placed into shell, and magnet in shell is wrapped around motor rotor, in addition, the shaft of motor rotor middle part needs to be connected with the rear end cover of shell, but the assembly of existing motor rotor and shell has certain drawbacks:

[0004] Firstly, the central shaft of existing motor rotor is prone to shaking when low-speed running after installation, the central shaft is prone to wear with shell, and stability is poor;

[0005] Secondly, existing motor rotor cannot accurately enter into shell when installing in shell, and the central shaft cannot accurately connect with the rear end cover of shell.

[0006] Therefore, we propose a kind of motor rotor assembly and the assembly structure of shell. CONTENT OF UTILITY MODEL

[0007] The main purpose of the utility model is to provide a kind of motor rotor assembly and the assembly structure of shell, which can effectively solve the problems in the background art.

[0008] In order to achieve the above object, the utility model takes the technical scheme for an assembly structure of a motor rotor assembly and a shell, which comprises a motor shell, the front end outer surface of the motor shell is detachably connected with a front end cover, the rear end outer surface of the motor shell is detachably connected with a rear end cover, the middle part of the motor shell is provided with a magnet, the rear end outer surface of the front end cover is provided with a stabilizing cylinder and a butt joint seat, the rear end of the stabilizing cylinder is provided with a rotor body, the butt joint seat is located around the stabilizing cylinder, the middle part of the butt joint seat is provided with a magnetic ring, the inside of the stabilizing cylinder is provided with an embedded groove, the middle part of the embedded groove is provided with a pressing column, a first limiting spring is arranged between the embedded groove and the pressing column, the one end outer surface of the pressing column is fixedly connected with a ball seat, the middle part of the ball seat is movably connected with a ball body, and the middle part of the rotor body is provided with a rotor central shaft.

[0009] Preferably, the front end outer surface of the front end cover is detachably connected with a fixing wire and a cover cylinder, the fixing wire is located around the cover cylinder, the middle part of the cover cylinder is provided with a bearing, and the outer wall of the rear end cover is provided with a heat dissipation hole.

[0010] Preferably, the front end outer surface of the motor shell is provided with a wire hole and a guide hole, the wire hole is located on both sides of the guide hole, the middle part of the guide hole is provided with an auxiliary guide rod, and a second limiting spring is arranged between the guide hole and the auxiliary guide rod.

[0011] Preferably, the embedded groove is movably connected with the pressing column through the first limiting spring, and the number of the embedded grooves is five.

[0012] Preferably, the front end cover and the butt joint seat are weldedly connected, and the number of the butt joint seats is two.

[0013] Preferably, the guide hole is movably connected with the auxiliary guide rod through the second limiting spring, and the number of the guide holes is two.

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

[0015] The stabilizing cylinder is arranged to facilitate the rotor central shaft in the rotor body to pass through, and when the rotor central shaft passes through, the ball body at the front end of the pressing column can be attached to the outer wall of the rotor central shaft, and under the action of the first limiting spring, the ball body can be tightly attached to the rotor central shaft, and when the rotor central shaft rotates, the ball body can rotate together, so that the shaking of the rotor central shaft when rotating at low speed can be reduced, and the rotor central shaft and the shell can be prevented from being abraded, and the stability is high; the guide hole is arranged to facilitate the auxiliary guide rod in the guide hole to be connected with the butt joint seat at the rear end of the front end cover, and the magnetic ring in the butt joint seat can magnetically attract and fix the auxiliary guide rod, so that when the rotor body is installed, the rotor body can be connected with the front end cover first, and then the front end cover can be connected with the motor shell through the butt joint seat and the auxiliary guide rod, so that the auxiliary guide rod can be used for stable guiding when the front end cover is connected with the motor shell, the rotor body can be accurately connected into the motor shell, and the rotor central shaft on the rotor body can be accurately connected with the rear end cover. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structure diagram of the utility model;

[0017] Figure 2 It is an internal structure diagram of the motor shell of the utility model;

[0018] Figure 3 It is a rear view structure diagram of the front end cover of the utility model;

[0019] Figure 4 It is a sectional structure diagram of the stabilizing cylinder of the utility model;

[0020] Figure 5 It is a structure diagram of the guide hole of the utility model.

[0021] In the drawing: 1, motor shell; 2, front end cover; 3, rear end cover; 4, fixed wire; 5, cover cylinder; 6, bearing; 7, heat dissipation hole; 8, magnet; 9, wire hole; 10, guide hole; 11, auxiliary guide rod; 12, stabilizing cylinder; 13, rotor body; 14, butt joint seat; 15, magnetic ring; 16, built-in groove; 17, pressing column; 18, first limiting spring; 19, ball seat; 20, ball body; 21, second limiting spring; 22, rotor central shaft. DETAILED DESCRIPTION

[0022] In order to make the skilled in the art better understand the technical scheme of the utility model, the utility model will be further introduced in detail below in combination with the drawings.

[0023] As Figures 1-5As shown, the utility model discloses an assembly structure of motor rotor assembly and casing, including motor casing 1, the front end outer surface of motor casing 1 is detachably connected with front end cover 2, the rear end outer surface of motor casing 1 is detachably connected with rear end cover 3, the middle part of motor casing 1 is provided with magnet 8, and the rear end outer surface of front end cover 2 is provided with stabilizing cylinder 12 and docking seat 14, the rear end of stabilizing cylinder 12 is provided with rotor body 13, and docking seat 14 is located around stabilizing cylinder 12, and the middle part of docking seat 14 is provided with magnetic ring 15, the inside of stabilizing cylinder 12 is provided with built-in groove 16, the middle part of built-in groove 16 is provided with pressure column 17, first limit spring 18 is arranged between built-in groove 16 and pressure column 17, the one end outer surface of pressure column 17 is fixedly connected with ball seat 19, the middle part of ball seat 19 is movably connected with ball body 20, and the middle part of rotor body 13 is provided with rotor center shaft 22.

[0024] Specifically, in the embodiment, including motor casing 1, the front end outer surface of motor casing 1 is detachably connected with front end cover 2, the rear end outer surface of motor casing 1 is detachably connected with rear end cover 3, the middle part of motor casing 1 is provided with magnet 8, and the rear end outer surface of front end cover 2 is provided with stabilizing cylinder 12 and docking seat 14, the rear end of stabilizing cylinder 12 is provided with rotor body 13, and docking seat 14 is located around stabilizing cylinder 12, and the middle part of docking seat 14 is provided with magnetic ring 15, the inside of stabilizing cylinder 12 is provided with built-in groove 16, stabilizing cylinder 12 can be convenient for rotor center shaft 22 in rotor body 13 to pass through when using, the ball body 20 of pressure column 17 front end can be attached in the outer wall of rotor center shaft 22 when rotor center shaft 22 is penetrated, and under the action of first limit spring 18, ball body 20 will be tightly pressed against rotor center shaft 22, ball body 20 can rotate along with rotor center shaft 22 when rotor center shaft 22 rotates, can reduce the jitter of rotor center shaft 22 when rotating at low speed, can avoid that rotor center shaft 22 and casing are abraded, and the stability is higher, the middle part of built-in groove 16 is provided with pressure column 17, first limit spring 18 is arranged between built-in groove 16 and pressure column 17, the one end outer surface of pressure column 17 is fixedly connected with ball seat 19, the middle part of ball seat 19 is movably connected with ball body 20, and the middle part of rotor body 13 is provided with rotor center shaft 22.

[0025] The assembly structure of motor rotor assembly and casing provided by the utility model, the stabilizing cylinder 12 is set and can be convenient for rotor center shaft 22 in rotor body 13 to pass through when using, the ball body 20 of pressure column 17 front end can be attached in the outer wall of rotor center shaft 22 when rotor center shaft 22 is penetrated, and under the action of first limit spring 18, ball body 20 will be tightly pressed against rotor center shaft 22, ball body 20 can rotate along with rotor center shaft 22 when rotor center shaft 22 rotates, can reduce the jitter of rotor center shaft 22 when rotating at low speed, can avoid that rotor center shaft 22 and casing are abraded, and the stability is higher.

[0026] In one embodiment of the utility model, the front end outer surface of the front end cover 2 is detachably connected with the fixing wire 4 and the cover cylinder 5, the fixing wire 4 is located at the four around of the cover cylinder 5, the middle part of the cover cylinder 5 is provided with the bearing 6, the outer wall of the rear end cover 3 is provided with the heat dissipation hole 7, and the heat dissipation hole 7 mainly plays the heat dissipation effect in the shell when being used.

[0027] In another embodiment of the utility model, the front end outer surface of the motor shell 1 is provided with the wire hole 9 and the guide hole 10, the wire hole 9 is located at the both sides of the guide hole 10, the middle part of the guide hole 10 is provided with the auxiliary guide rod 11, the second limiting spring 21 is arranged between the guide hole 10 and the auxiliary guide rod 11, the auxiliary guide rod 11 in the guide hole 10 can be docked with the docking seat 14 at the rear end of the front end cover 2 when being used, the magnetic ring 15 in the docking seat 14 can magnetically attract and fix the auxiliary guide rod 11, when installing the rotor body 13, the rotor body 13 can be connected with the front end cover 2 first, then the front end cover 2 is docked and installed with the motor shell 1 through the docking seat 14 and the auxiliary guide rod 11, the auxiliary guide rod 11 can play the effect of stable guiding when being docked and installed, the rotor body 13 can be conveniently and accurately entered into the motor shell 1, and the rotor central shaft 22 on the rotor body 13 can be conveniently and accurately installed and docked on the rear end cover 3.

[0028] In still another embodiment of the utility model, the built-in groove 16 is movably connected with the abutting column 17 through the first limiting spring 18, the number of the built-in groove 16 is five groups, and the first limiting spring 18 can conveniently limit the abutting column 17 and play the effect of rebounding when being used.

[0029] In one embodiment of the utility model, the front end cover 2 is welded and connected with the docking seat 14, and the number of the docking seat 14 is two groups, so that the docking seat 14 can conveniently dock and fix the auxiliary guide rod 11 when being used.

[0030] In another embodiment of the utility model, the guide hole 10 is movably connected with the auxiliary guide rod 11 through the second limiting spring 21, and the number of the guide hole 10 is two groups, so that the auxiliary guide rod 11 can play the effect of auxiliary stability when installing the rotor body 13 when being used.

[0031] It needs to be explained that the utility model discloses a motor rotor assembly and the assembly structure of shell, can install rotor body 13 to front end cover 2 when using first, make rotor body 13 front end rotor center shaft 22 through stable cylinder 12 and bearing 6, can butt joint seat 14 of front end cover 2 rear end and auxiliary guide rod 11 butt joint at this moment, the magnetic ring 15 in butt joint seat 14 can carry out magnetic attraction fixed auxiliary guide rod 11, then can push front end cover 2 to motor shell 1 and enter movement at this moment, auxiliary guide rod 11 can compress second limit spring 21, and rotor body 13 will follow the push of front end cover 2 and enter into motor shell 1, and auxiliary guide rod 11 can play the effect of stable guiding, can be convenient for rotor body 13 accurate and enter into motor shell 1, and can be convenient for rotor body 13 on rotor center shaft 22 accurate installation butt joint to rear end cover 3, when butt joint is completed, can be fastened through fixed silk 4 to front end cover 2, stable cylinder 12 can be convenient for rotor center shaft 22 in rotor body 13 when using, and the ball body 20 of abutting pressure column 17 front end can be attached in the outer wall of rotor center shaft 22 when passing through, and under the action of first limit spring 18, ball body 20 will be in close contact with rotor center shaft 22, and when rotor center shaft 22 rotates, ball body 20 can follow it and rotate, can reduce the jitter of rotor center shaft 22 when low-speed rotation, can avoid the abrasion of rotor center shaft 22 and shell, and the stability is higher, and it is more practical.

[0032] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the utility model and are not intended to limit the utility model. Without departing from the spirit and scope of the utility model, various changes and improvements can be made to the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An assembly structure of a motor rotor assembly and a housing, comprising a motor housing (1), characterized in that: The front end outer surface of the motor housing (1) is detachably connected to a front end cover (2), the rear end outer surface of the motor housing (1) is detachably connected to a rear end cover (3), a magnet (8) is provided in the middle of the motor housing (1), a stabilizing cylinder (12) and a docking seat (14) are provided on the rear end outer surface of the front end cover (2), a rotor body (13) is provided at the rear end of the stabilizing cylinder (12), the docking seat (14) is located around the stabilizing cylinder (12), and the middle of the docking seat (14) is provided. A magnetic ring (15) is provided, a built-in groove (16) is provided inside the stabilizing cylinder (12), a pressure column (17) is provided in the middle of the built-in groove (16), a first limit spring (18) is provided between the built-in groove (16) and the pressure column (17), a ball seat (19) is fixedly connected to the outer surface of one end of the pressure column (17), a ball body (20) is movably connected to the middle of the ball seat (19), and a rotor center axis (22) is provided in the middle of the rotor body (13).

2. The assembly structure of a motor rotor assembly and a housing according to claim 1, characterized in that: The front end outer surface of the front end cover (2) is detachably connected to a fixing wire (4) and a cover tube (5); the fixing wire (4) is located around the cover tube (5); a bearing (6) is provided in the middle of the cover tube (5); and a heat dissipation hole (7) is provided on the outer wall of the rear end cover (3).

3. The assembly structure of a motor rotor assembly and a housing according to claim 1, characterized in that: A thread hole (9) and a guide hole (10) are provided on the front outer surface of the motor housing (1), the thread hole (9) is located on both sides of the guide hole (10), an auxiliary guide rod (11) is provided in the middle of the guide hole (10), and a second limit spring (21) is provided between the guide hole (10) and the auxiliary guide rod (11).

4. The assembly structure of a motor rotor assembly and a housing according to claim 1, characterized in that: The built-in grooves (16) are movably connected to the pressing columns (17) via first limit springs (18), and the number of the built-in grooves (16) is five groups.

5. The assembly structure of a motor rotor assembly and a housing according to claim 1, characterized in that: The front end cover (2) is welded to the docking seat (14), and the number of the docking seat (14) is two groups.

6. The assembly structure of a motor rotor assembly and a housing according to claim 3, characterized in that: The guide holes (10) are movably connected to the auxiliary guide rod (11) via a second limit spring (21), and there are two groups of the guide holes (10).

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