Brush motor rotor sleeve

Abstract

The invention relates to the technical field of brushed motor rotors, in particular to a brushed motor rotor sleeve, which comprises two paper sleeves, a rotor sleeve, a rotor sleeve and a rotor sleeve, the mounting mechanism is used for mounting the two paper sleeves on a rotor main shaft, and the mounting mechanism is arranged between the two paper sleeves; the two paper sleeves are sequentially arranged on the surface of the rotor main shaft in a sleeving mode, at the moment, the connecting rings are inserted into the connecting grooves and break the sealing film, and at the moment, an acrylic acid adhesive enters the upper annular groove and the lower annular groove through the inclined holes under extrusion of the connecting rings; the acrylic acid binder is fully distributed between the surface of the connecting ring and the inner wall of the connecting groove under the extrusion of the connecting ring, so that the two paper sleeves can be rapidly installed between the armature and the commutator to form an isolation space, and the probability of wire jamming in an insulation gap between the armature and the commutator during rotor winding is reduced. And the risk of short circuit between the commutator and the armature is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of brush motor rotors, in particular to a brush motor rotor sleeve. Background Art

[0002] The brushed motor consists of two major parts: the stator and the rotor. The stator has magnetic poles and the rotor has windings. When power is turned on, a magnetic field is also formed on the rotor. There is an angle between the magnetic poles of the stator and the rotor. The motor rotates under the mutual attraction of the stator and rotor magnetic fields (between the N pole and the S pole). When assembling the motor rotor, it is necessary to install multiple washers and apply insulating coating between the commutator and the armature. When winding the rotor, the insulating gap between the armature and the commutator is prone to wire jamming, which can easily cause the risk of short circuit between the commutator and the armature.

[0003] Therefore, a brush motor rotor sleeve is proposed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a brush motor rotor sleeve in order to solve the above problems, thereby improving the problem that the insulation gap between the armature and the commutator of the existing brush motor rotor is easy to get stuck when winding the wire, which easily causes a short circuit between the commutator and the armature.

[0005] The present invention achieves the above-mentioned purpose through the following technical scheme. A brushed motor rotor sleeve comprises: a paper sleeve, wherein the number of the paper sleeves is two; a mounting mechanism, wherein the mounting mechanism is arranged between the two paper sleeves for mounting the two paper sleeves on the rotor main shaft; wherein the mounting mechanism comprises an auxiliary component, wherein the top of the lower paper sleeve is fixedly connected with two connecting rings, and the bottom of the upper paper sleeve is provided with two connecting grooves, and the top of the connecting ring passes through the interior of the connecting groove, and the interior of the connecting groove is provided with acrylic adhesive, and the inner wall of the upper paper sleeve is provided with annularly distributed inclined holes, and the auxiliary component for improving the stability of the two paper sleeves is arranged inside the two paper sleeves, and the inner wall of the connecting groove is provided with a sealing film, and the acrylic adhesive is located above the sealing film, and the upper The inner wall of the paper sleeve is provided with an upper annular groove connected with the inclined hole, and the inner wall of the lower paper sleeve is provided with a lower annular groove matched with the upper annular groove. During installation, the lower paper sleeve is first sleeved on the surface of the rotor main shaft with its bottom in contact with the surface of the armature, and then the upper paper sleeve is sleeved on the surface of the rotor main shaft. At this time, the connecting ring will be inserted into the connecting groove and the sealing film will be pierced. At this time, the acrylic adhesive will enter the interior of the upper annular groove and the lower annular groove through the inclined hole under the extrusion of the connecting ring and contact the surface of the rotor main shaft. At the same time, the acrylic adhesive will also be spread between the surface of the connecting ring and the inner wall of the connecting groove under the extrusion of the connecting ring, so that the two paper sleeves can be quickly installed between the armature and the commutator to form an isolation space, thereby reducing the probability of wire jamming in the insulating gap between the armature and the commutator when the rotor is wound, and reducing the risk of short circuit between the commutator and the armature.

[0006] Preferably, the auxiliary component includes equidistantly distributed explosion-proof rings, and mounting grooves are provided on opposite sides of the two paper sleeves. The explosion-proof rings are arranged inside the mounting grooves, and an annularly distributed connecting plate is fixedly connected between two adjacent explosion-proof rings. The connecting plate is arc-shaped, and the explosion-proof rings and the connecting plates will be inserted into the interior of the mounting grooves during installation. The inner wall of the explosion-proof ring will be tightly attached to the inner wall of the mounting groove. During installation, the explosion-proof ring will squeeze the inner wall of the paper sleeve, so that the paper sleeve can be pressed against the surface of the rotor main shaft. At the same time, the stability of the paper sleeve can be improved, and the deformation and bursting of the paper sleeve after long-term use can be reduced.

[0007] Preferably, the top of the connecting ring is fixedly connected with a ring-shaped wall-breaking cone, the inner top wall of the connecting groove is provided with a groove, the top of the wall-breaking cone passes through the connecting groove, the sealing membrane and the groove in sequence and extends to the interior of the groove; during installation, the wall-breaking cone will puncture the sealing membrane as the connecting ring moves; when the installation is completed, the wall-breaking cone will enter the groove, thereby avoiding the problem of the sealing membrane being difficult to break.

[0008] Preferably, the two paper sleeves are both electrical kraft paper components, and the surfaces of the two paper sleeves are provided with PTFE high-temperature resistant insulating coatings. The paper sleeves made of electrical kraft paper components have the advantages of impact resistance, wear resistance, compression resistance, good toughness, lightweight, oil resistance, chemical resistance, no heat melting, no condensation, moisture absorption and release performance, and are biodegradable and anti-static. The PTFE high-temperature resistant insulating coating can further protect the high temperature resistance and wear resistance of the paper sleeve.

[0009] Preferably, the bottom end of the paper sleeve below is provided with a flange, and the flange is in the shape of a ring. The ring-shaped flange is suitable for a DC brush motor rotor with an oblique armature winding, thereby improving the practicability of the device.

[0010] The beneficial effects of the present invention are: During installation, first, the lower paper sleeve is sleeved on the surface of the rotor main shaft, with its bottom in contact with the surface of the armature, and then the upper paper sleeve is sleeved on the surface of the rotor main shaft. At this time, the connecting ring will be inserted into the connecting groove and the sealing film will be pierced. At this time, the acrylic adhesive will enter the interior of the upper annular groove and the lower annular groove through the inclined hole under the extrusion of the connecting ring and contact the surface of the rotor main shaft. At the same time, the acrylic adhesive will also be spread between the surface of the connecting ring and the inner wall of the connecting groove under the extrusion of the connecting ring, so that the two paper sleeves can be quickly installed between the armature and the commutator to form an isolation space, reducing the probability of wire jamming in the insulation gap between the armature and the commutator when the rotor is wound, and reducing the risk of short circuit between the commutator and the armature; The explosion-proof ring and the connecting plate will be inserted into the installation groove during installation. The inner wall of the explosion-proof ring will be tightly attached to the inner wall of the installation groove. During installation, the explosion-proof ring will squeeze the inner wall of the paper casing, so that the paper casing can be pressed against the surface of the rotor main shaft. At the same time, the stability of the paper casing can be improved, and the deformation and bursting of the paper casing after long-term use can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a cross-sectional schematic diagram of the present invention; Figure 3 It is an explosion schematic diagram of the present invention; Figure 4 It is a connection schematic diagram of the connection ring and the connection groove of the present invention; Figure 5 It is a schematic diagram of the connection between the sealing film and the connecting groove of the present invention.

[0012] In the figure: 1. paper sleeve; 2. installation mechanism; 21. inclined hole; 22. connecting ring; 23. connecting groove; 24. sealing membrane; 25. wall-breaking cone; 26. groove; 27. upper annular groove; 28. PTFE high-temperature resistant insulating coating; 29. ​​auxiliary component; 2901. explosion-proof ring; 2902. connecting plate; 2903. installation groove; 210. flange; 211. lower annular groove; 212. acrylic adhesive. Implementation

[0013] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0014] When implementing: Figure 1-5 As shown, a brush motor rotor sleeve comprises: a paper sleeve 1, the number of which is two; a mounting mechanism 2, which is used to mount the two paper sleeves 1 on the rotor main shaft; the mounting mechanism 2 is arranged between the two paper sleeves 1; wherein the mounting mechanism 2 comprises an auxiliary component 29, the top of the lower paper sleeve 1 is fixedly connected with two connecting rings 22, the bottom of the upper paper sleeve 1 is provided with two connecting grooves 23, the top of the connecting ring 22 penetrates into the interior of the connecting groove 23, the interior of the connecting groove 23 is provided with an acrylic adhesive 212, the inner wall of the upper paper sleeve 1 is provided with annularly distributed inclined holes 21, the auxiliary component 29 for improving the stability of the two paper sleeves 1 is arranged inside the two paper sleeves 1, the inner wall of the connecting groove 23 is provided with a sealing film 24, the acrylic adhesive 212 is located above the sealing film 24, and the inner wall of the upper paper sleeve 1 is provided with an inclined hole 21 The upper annular groove 27 is connected to each other, and the inner wall of the lower paper sleeve 1 is provided with a lower annular groove 211 which is compatible with the upper annular groove 27. During installation, the lower paper sleeve 1 is first sleeved on the surface of the rotor main shaft, and its bottom contacts the surface of the armature. Then the auxiliary component 29 is inserted into the lower paper sleeve 1, and then the upper paper sleeve 1 is sleeved on the surface of the rotor main shaft, and the auxiliary component 29 is sleeved inside it. At this time, the connecting ring 22 will be inserted into the connecting groove 23 and the sealing film 24 will be pierced. At this time, the acrylic adhesive 212 will enter the interior of the upper annular groove 27 and the lower annular groove 211 through the inclined hole 21 under the extrusion of the connecting ring 22 and contact the surface of the rotor main shaft. At the same time, the acrylic adhesive 212 will also be spread between the surface of the connecting ring 22 and the inner wall of the connecting groove 23 under the extrusion of the connecting ring 22. Then the commutator is installed on the surface of the rotor main shaft and in contact with the top of the upper paper sleeve 1.

[0015] like Figure 1-5As shown, the auxiliary component 29 includes equidistantly distributed explosion-proof rings 2901, and mounting grooves 2903 are provided on opposite sides of the two paper sleeves 1. The explosion-proof rings 2901 are arranged inside the mounting grooves 2903. A ring-shaped connecting plate 2902 is fixedly connected between two adjacent explosion-proof rings 2901. The connecting plate 2902 is arc-shaped. The explosion-proof rings 2901 and the connecting plate 2902 will be inserted into the mounting grooves 2903 during installation. The inner wall of the explosion-proof ring 2901 will be tightly attached to the inner wall of the mounting groove 2903. The explosion-proof ring 2901 will squeeze the inner wall of the paper sleeve 1 during installation.

[0016] like Figure 1-5 As shown, the top of the connecting ring 22 is fixedly connected with a ring-shaped wall-breaking cone 25, and the inner top wall of the connecting groove 23 is provided with a groove 26. The top of the wall-breaking cone 25 passes through the connecting groove 23, the sealing membrane 24 and the groove 26 in sequence and extends to the inside of the groove 26. During installation, the wall-breaking cone 25 will pierce the sealing membrane 24 as the connecting ring 22 moves, and the wall-breaking cone 25 will enter the groove 26 when the installation is completed.

[0017] like Figure 1-4 As shown, the two paper bushings 1 are both made of electrical kraft paper, and the surfaces of the two paper bushings 1 are both provided with a PTFE high temperature resistant insulating coating 28 .

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, a flange 210 is provided at the bottom end of the lower paper sleeve 1. The flange 210 is annular in shape. The annular flange 210 is suitable for a DC brush motor rotor with an oblique armature winding.

[0019] During installation, the present invention firstly sleeves the lower paper sleeve 1 on the surface of the rotor main shaft, with its bottom in contact with the surface of the armature, and then the explosion-proof ring 2901 and the connecting plate 2902 are inserted into the interior of the installation groove 2903 during installation, and the inner wall of the explosion-proof ring 2901 is in close contact with the inner wall of the installation groove 2903. During installation, the explosion-proof ring 2901 squeezes the inner wall of the paper sleeve 1 into the lower paper sleeve 1, and then the upper paper sleeve 1 is sleeved on the surface of the rotor main shaft. At this time, the connecting ring 22 is inserted into the connecting groove 23 and pierces the sealing film 24. At this time, the acrylic adhesive 212 enters the interior of the upper annular groove 27 and the lower annular groove 211 through the inclined hole 21 under the squeezing of the connecting ring 22 and contacts the surface of the rotor main shaft. At the same time, the acrylic adhesive 212 is also spread between the surface of the connecting ring 22 and the inner wall of the connecting groove 23 under the squeezing of the connecting ring 22. Then, the commutator is installed on the surface of the rotor main shaft and contacts the top of the upper paper sleeve 1.

[0020] It should be noted that the armature and commutator in the above description are devices with relatively mature application of existing technologies. The specific models can be selected according to actual needs. At the same time, the armature and commutator can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0021] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Brushed motor rotor sleeve, characterized in that: include: A paper sleeve (1), wherein the number of the paper sleeves (1) is two; A mounting mechanism (2) for mounting the two paper sleeves (1) on the rotor main shaft, the mounting mechanism (2) being arranged between the two paper sleeves (1); The mounting mechanism (2) comprises an auxiliary component (29), the top of the lower paper sleeve (1) is fixedly connected with two connecting rings (22), the bottom of the upper paper sleeve (1) is provided with two connecting grooves (23), the top of the connecting ring (22) penetrates into the interior of the connecting groove (23), the interior of the connecting groove (23) is provided with an acrylic adhesive (212), the inner wall of the upper paper sleeve (1) is provided with annularly distributed inclined holes (21), and the auxiliary component (29) for improving the stability of the two paper sleeves (1) is arranged inside the two paper sleeves (1).

2. The brush motor rotor sleeve according to claim 1, characterized in that: The auxiliary component (29) comprises explosion-proof rings (2901) distributed at equal intervals, and mounting grooves (2903) are provided on opposite sides of the two paper sleeves (1), and the explosion-proof rings (2901) are arranged inside the mounting grooves (2903).

3. The brush motor rotor sleeve according to claim 1, characterized in that: The inner wall of the connection groove (23) is provided with a sealing film (24), and the acrylic adhesive (212) is located above the sealing film (24).

4. The brush motor rotor sleeve according to claim 1, characterized in that: An upper annular groove (27) communicating with the inclined hole (21) is formed on the inner wall of the upper paper sleeve (1), and a lower annular groove (211) matching with the upper annular groove (27) is formed on the inner wall of the lower paper sleeve (1).

5. The brush motor rotor sleeve according to claim 3, characterized in that: The top of the connecting ring (22) is fixedly connected with an annularly distributed wall-breaking cone (25), the inner top wall of the connecting groove (23) is provided with a groove (26), and the top of the wall-breaking cone (25) sequentially penetrates the connecting groove (23), the sealing membrane (24) and the groove (26) and extends to the interior of the groove (26).

6. The brush motor rotor sleeve according to claim 1, characterized in that: The two paper bushings (1) are both made of electrical kraft paper, and the surfaces of the two paper bushings (1) are both provided with a PTFE high temperature resistant insulating coating (28).

7. The brush motor rotor sleeve according to claim 1, characterized in that: The bottom end of the lower paper sleeve (1) is provided with a flange (210), and the flange (210) is in the shape of a ring.

8. The brush motor rotor sleeve according to claim 2, characterized in that: A connecting plate (2902) distributed in an annular shape is fixedly connected between two adjacent explosion-proof rings (2901), and the connecting plate (2902) is in an arc shape.

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