CN214799090U

CN214799090U - Hollow cup micro motor convenient for fixing magnetic steel

Info

Publication number: CN214799090U
Application number: CN202121839913.4U
Authority: CN
Inventors: 孙小瑜
Original assignee: Guang'an Chaodaxin Electromechanical Manufacturing Co ltd
Current assignee: Guang'an Chaodaxin Electromechanical Manufacturing Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-11-19
Anticipated expiration: 2031-08-09

Abstract

The utility model provides a little motor of coreless convenient to fixed magnet steel relates to motor technical field. The hollow cup micro motor convenient for fixing the magnetic steel comprises a stator assembly, a rotor assembly, a front end cover assembly, a rear end cover assembly and a first fixing assembly. The stator component comprises a shell, magnetic steel and a steel sleeve which are sequentially sleeved from outside to inside. The rotor assembly comprises a rotor, a rotating shaft and a connecting shaft. The rear end cap assembly includes a rear cap and a commutator and brush mounted to the rear cap. The front end cap assembly includes a front cap. First fixed subassembly is including solid fixed ring, backup pad, screw rod and gag lever post. The outside of magnet steel is equipped with first ring channel, and solid fixed ring cup joints on the magnet steel to fix in first ring channel. The second ring channel has been seted up in solid fixed ring's the outside, and the backup pad is installed in the protecgulum, screw rod and backup pad threaded connection, and the gag lever post is fixed in the one end of screw rod to match with the second ring channel. The magnetic steel is not easy to shift or fall off under the action of factors such as vibration and the like, so that the purpose of ensuring the performance of the motor is achieved.

Description

Hollow cup micro motor convenient for fixing magnetic steel

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a little motor of coreless convenient to fixed magnet steel is related to.

Background

The hollow cup micro motor has the advantages of outstanding energy-saving characteristic, sensitive and convenient control characteristic and stable operation characteristic, and the technical advancement is very obvious. The coreless motor structurally breaks through the structural form of the rotor of the traditional motor, the coreless rotor is adopted, the coreless rotor is also called a coreless rotor, the novel rotor structure thoroughly eliminates the electric energy loss caused by the formation of eddy current by the iron core, and meanwhile, the weight and the rotational inertia of the coreless motor are greatly reduced, so that the mechanical energy loss of the rotor is reduced.

The hollow cup micromotor mainly comprises a stator component, a rotor component and an end cover component, wherein the stator component comprises a shell, magnetic steel and a steel bushing, the rotor component comprises a rotating shaft and a rotor, and the end cover component comprises a commutator and an electric brush. At present, the magnetic steel is fixed in the shell in a bonding mode, and the magnetic steel is easy to shift or fall off under the action of factors such as vibration and the like, so that the performance of the motor is seriously reduced.

SUMMERY OF THE UTILITY MODEL

In order to the above situation, the utility model provides a little motor of coreless convenient to fixed magnet steel has solved current magnet steel and has adopted the mode of bonding to fix in the casing, and the magnet steel takes place to shift easily or drop under the effect of factors such as vibration, and leads to the technical problem that the performance of motor seriously descends.

In order to achieve the above object, the utility model provides a following technical scheme:

a hollow cup micromotor convenient for fixing magnetic steel mainly comprises: stator module, rotor subassembly, front end housing assembly, rear end cap subassembly and first fixed subassembly.

The stator component comprises a shell, magnetic steel and a steel sleeve which are sequentially sleeved from outside to inside.

The rotor assembly comprises a rotor, a rotating shaft and a connecting shaft. The rotating shaft is arranged in the rotor and is connected with the steel sleeve through a bearing, and the rotor and the connecting shaft are respectively connected to two sides of the rotor.

The rear end cover assembly comprises a rear cover, a commutator and an electric brush, wherein the commutator and the electric brush are installed on the rear cover, and the connecting shaft is connected with the rear cover.

The front end cover assembly comprises a front cover, and the rotating shaft penetrates through the front cover.

First fixed subassembly is including solid fixed ring, backup pad, screw rod and gag lever post. The first annular groove is formed in the outer side of the magnetic steel, and the fixing ring is sleeved on the magnetic steel and fixed in the first annular groove. The second ring channel has been seted up in solid fixed ring's the outside, and the backup pad is installed in the protecgulum, screw rod and backup pad threaded connection, and the gag lever post is fixed in the one end of screw rod to match with the second ring channel.

The utility model discloses an in some embodiments, be provided with the slide rail on the protecgulum, slide rail sliding connection has the slider, and the spiro union has on the slider to be used for fixing its fastening nut on the slide rail, and the one end of backup pad is fixed on the slider.

The utility model discloses an in some embodiments, seted up the spout on the slide rail, fastening nut's one end can stretch into in the spout.

In some embodiments of the present invention, the support plate is provided with a reinforcing rib.

In some embodiments of the present invention, the limiting rod is provided with anti-slip lines.

In some embodiments of the present invention, the rear cover has a receiving cavity, the receiving cavity is slidably connected with a sliding plate, and the connecting shaft is rotatably connected with the sliding plate. The hollow cup micro motor convenient for fixing the magnetic steel further comprises a second fixing component used for limiting the rotor to move along the axial direction of the magnetic steel.

In some embodiments of the present invention, the connecting ring is fixedly disposed at an end of the rotor close to the front cover, and the second fixing member includes a round bar, a connecting block and a rotating ring. The round bar is fixed on solid fixed ring, and the one end of connecting block is fixed on the rotating ring, and the other end cup joints on the round bar, can dismantle on the round bar and be connected with first locating part and second locating part, and first locating part and second locating part are located the both sides of connecting block respectively.

In some embodiments of the present invention, the first locating part and the second locating part are both connected to the round rod by screw threads.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

can restrict the radial removal of magnet steel along the steel bushing through the steel bushing, through the setting of solid fixed ring, backup pad, screw rod and gag lever post, can restrict the axial removal of magnet steel along the steel bushing, the magnet steel is difficult for taking place to shift or drop under the effect of factors such as vibration to reach the purpose of guaranteeing the motor performance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a hollow cup micro-motor facilitating the fixing of magnetic steel;

FIG. 2 is an enlarged view of a portion of the portion A of FIG. 1;

fig. 3 is a schematic structural diagram of the magnetic steel, the fixing ring, the first fixing component and the second fixing component.

Icon: 111-shell, 112-magnetic steel, 113-steel sleeve, 121-rotor, 122-rotating shaft, 123-connecting shaft, 124-bearing, 125-magnetic steel and rotor gap, 131-rear cover, 132-commutator, 133-brush, 141-fixing ring, 142-supporting plate, 143-screw, 144-limiting rod, 145-first annular groove, 146-second annular groove, 147-sliding rail, 148-sliding block, 149-fastening nut, 151-sliding groove, 152-reinforcing rib, 161-accommodating cavity, 162-sliding plate, 163-connecting ring, 164-round rod, 165-connecting block, 166-rotating ring, 167-first limiting piece and 168-second limiting piece.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to fig. 3, the present embodiment provides a hollow cup micro-motor for fixing magnetic steel 112, which mainly includes: stator assembly, rotor 121 subassembly, front end cap subassembly, rear end cap subassembly and the first fixed subassembly.

The stator assembly comprises a shell 111, magnetic steel 112 and a steel sleeve 113 which are sleeved from outside to inside in sequence. The rotor 121 assembly includes a rotor 121, a rotation shaft 122, and a connection shaft 123. The rotating shaft 122 is installed in the rotor 121 and connected to the steel sleeve 113 through a bearing 124, and the rotor 121 and the connecting shaft 123 are respectively connected to both sides of the rotor 121. The shaft 122 may pass through the steel sleeve 113. The rear cover assembly includes a rear cover 131, and a commutator 132 and a brush 133 mounted to the rear cover 131, and the connection shaft 123 is connected to the rear cover 131. The front end cover assembly includes a front cover through which the shaft 122 is disposed. The first fixing member includes a fixing ring 141, a support plate 142, a screw 143, and a stopper rod 144. First ring groove 145 is opened on the outside of magnet steel 112, and fixed ring 141 is sleeved on magnet steel 112 and fixed in first ring groove 145. The outer side of the fixing ring 141 is provided with a second annular groove 146, the supporting plate 142 is mounted on the front cover, and the screw 143 is in threaded connection with the supporting plate 142. The limiting rod 144 is fixed at one end of the screw 143 and matches with the second annular groove 146, i.e. the limiting rod 144 can extend into the second annular groove 146 and can abut against the inner wall of the second annular groove 146. The steel sleeve 113 is attached to the front cover, and the steel sleeve 113 can restrict the movement of the magnetic steel 112 in the radial direction of the steel sleeve 113. Through the setting of solid fixed ring 141, backup pad 142, screw rod 143 and gag lever post 144, can restrict the axial removal of magnet steel 112 along steel bushing 113, magnet steel 112 is difficult for taking place to shift or drop under the effect of factors such as vibration to reach the purpose of guaranteeing the motor performance.

The front cover is provided with a slide rail 147, the slide rail 147 is connected with a slide block 148 in a sliding way, a fastening nut 149 used for fixing the slide block 148 on the slide rail 147 is screwed on the slide block 148, and one end of the supporting plate 142 is fixed on the slide block 148. Through the arrangement of the slide rail 147, the slide block 148 and the fastening nut 149, an operator can achieve the purpose of rapidly moving the screw 143 by moving the slide block 148.

The slide rail 147 is provided with a slide groove 151, one end of the fastening nut 149 can extend into the slide groove 151, and the end part and the side surface of the fastening nut 149 can be in contact with the slide groove 151, so that the contact area between the fastening nut 149 and the slide rail 147 is increased, and the slide block 148 is better fixed on the slide rail 147 through the fastening nut 149. Anti-slip threads may also be disposed within the runner 151 to increase the friction of the fastening nut 149 with the runner 151.

The supporting plate 142 is provided with reinforcing ribs 152 to improve the supporting ability of the supporting plate 142.

Anti-slip threads are provided on the stop rod 144 or in the second annular groove 146 to increase the friction between the stop rod 144 and the second annular groove 146.

The rear cover 131 has an accommodating chamber 161, a slide plate 162 is slidably coupled in the accommodating chamber 161, and the coupling shaft 123 is rotatably coupled to the slide plate 162. The coreless micro-motor facilitating the fixing of the magnetic steel 112 further includes a second fixing member for restricting the movement of the rotor 121 in the axial direction of the magnetic steel 112. After the rotor 121 is moved to adjust the distance between the rotor 121 and the magnetic steel 112, the movement of the rotor 121 in the axial direction of the magnetic steel 112 can be restricted by the second fixing member.

The rotor 121 is fixedly provided with a connection ring 163 at an end thereof adjacent to the front cover, and the second fixing assembly includes a round bar 164, a connection block 165, and a rotation ring 166. The round bar 164 is fixed on the fixing ring 141, one end of the connecting block 165 is fixed on the rotating ring 166, the other end of the connecting block 165 is sleeved on the round bar 164, the round bar 164 is detachably connected with a first limiting member 167 and a second limiting member 168, and the first limiting member 167 and the second limiting member 168 are respectively located on two sides of the connecting block 165.

In a specific implementation scenario, the first limiting member 167 and the second limiting member 168 are both connected to the circular rod 164 by screw threads. The first position-limiting member 167 and the second position-limiting member 168 are unscrewed, so that the rotor 121 can be moved to adjust the distance between the rotor 121 and the magnetic steel 112. After the distance between the rotor 121 and the magnetic steel 112 is adjusted, the first stopper 167 and the second stopper 168 can be screwed down to limit the axial movement of the rotor 121 along the magnetic steel 112.

When the magnetic steel 112 is installed, the steel sleeve 113 is installed on the front cover, the magnetic steel 112 is sleeved on the steel sleeve 113, the fastening nut 149 is unscrewed, the slider 148 is slid, and the screw 143 is screwed to enable the limiting rod 144 to abut against the second annular groove 146, so that the magnetic steel 112 is fixed. In the process of abutting the limiting rod 144 in the second annular groove 146, the magnetic steel 112 does not need to be rotated, and the operation is more convenient. After the magnetic steel 112 is installed, the rotor 121 is installed on the rear cover 131 through the connecting shaft 123, the distance between the front cover and the rear cover 131 is determined according to the size of the shell 111, the rotating shaft 122 sequentially penetrates through the steel sleeve 113 and the front cover, the first limiting piece 167 and the second limiting piece 168 are unscrewed, the distance between the rotor 121 and the magnetic steel 112 is adjusted, the first limiting piece 167 and the second limiting piece 168 are screwed down to limit the axial movement of the rotor 121 along the magnetic steel 112, so that the situation that the rotor 121 jumps along the axial direction of the magnetic steel 112 in the process of using the hollow micro-cup motor convenient for fixing the magnetic steel 112 is avoided, and finally the shell 111 can be sequentially sleeved on the rear cover 131 and the front cover.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications and changes, and the embodiments of the present invention and features of the embodiments can be arbitrarily combined with each other without conflict. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a little motor of coreless convenient to fixed magnet steel which characterized in that includes: the stator assembly, the rotor assembly, the front end cover assembly, the rear end cover assembly and the first fixing assembly;

the stator component comprises a shell, magnetic steel and a steel sleeve which are sequentially sleeved from outside to inside;

the rotor assembly comprises a rotor, a rotating shaft and a connecting shaft; the rotating shaft is arranged in the rotor and is connected with the steel sleeve through a bearing, and the rotor and the connecting shaft are respectively connected to two sides of the rotor;

the rear end cover assembly comprises a rear cover, a commutator and an electric brush, wherein the commutator and the electric brush are arranged on the rear cover;

the front end cover assembly comprises a front cover, and the rotating shaft penetrates through the front cover;

the first fixing component comprises a fixing ring, a supporting plate, a screw rod and a limiting rod; the outer side of the magnetic steel is provided with a first annular groove, and the fixing ring is sleeved on the magnetic steel and fixed in the first annular groove; the outer side of the fixing ring is provided with a second annular groove, the supporting plate is installed on the front cover, the screw rod is in threaded connection with the supporting plate, and the limiting rod is fixed at one end of the screw rod and matched with the second annular groove.

2. The micro-motor with hollow cup convenient for fixing magnetic steel according to claim 1, wherein the front cover is provided with a slide rail, the slide rail is connected with a slide block in a sliding manner, the slide block is connected with a fastening nut in a threaded manner for fixing the slide block on the slide rail, and one end of the supporting plate is fixed on the slide block.

3. The hollow cup micro-motor convenient for fixing magnetic steel according to claim 2, wherein a sliding groove is formed on the sliding rail, and one end of the fastening nut can extend into the sliding groove.

4. The coreless, micro-motor facilitating the fixing of magnetic steel of claim 2, wherein the support plate is provided with reinforcing ribs.

5. The coreless, micro-motor convenient for fixing magnetic steel of claim 1, wherein the limiting rod is provided with anti-slip threads.

6. The micro-motor of any one of claims 1 to 5, wherein the rear cover has a receiving cavity, a sliding plate is slidably connected in the receiving cavity, and the connecting shaft is rotatably connected to the sliding plate; the hollow cup micro-motor convenient for fixing the magnetic steel further comprises a second fixing component used for limiting the rotor to move along the axial direction of the magnetic steel.

7. The coreless micro-motor convenient for fixing magnetic steel of claim 6, wherein a connection ring is fixedly arranged at one end of the rotor close to the front cover, and the second fixing component comprises a round rod, a connection block and a rotating ring; the round bar is fixed on the fixed ring, one end of the connecting block is fixed on the rotating ring, the other end of the connecting block is sleeved on the round bar, a first limiting part and a second limiting part are detachably connected to the round bar, and the first limiting part and the second limiting part are respectively located on two sides of the connecting block.

8. The coreless, micro-motor facilitating fixation of magnetic steel according to claim 7, wherein the first and second position limiters are both in threaded connection with the round bar.