Heat-shrinkable protective sleeve for micro-motor rotor

Abstract

The utility model relates to the field of heat-shrinkable protective sleeves, in particular to a heat-shrinkable protective sleeve for a micro-motor rotor, which comprises a sleeve body. The sleeve body is mainly composed of a lower sleeve, an upper sleeve, an inner layer, a middle layer and an outer layer. Wherein the upper sleeve comprises a first sleeve body, a connecting strip is arranged on the surface of the first sleeve body, the lower sleeve comprises a second sleeve body located above the first sleeve body, a first clamping groove is formed in the bottom of the right end of the second sleeve body, and a corresponding groove is formed in the right side of the outer surface of the second sleeve body; by arranging the first clamping groove, the second clamping groove, the connecting strip, the second clamping groove, the second clamping block and the bonding strip at the joint of the upper sleeve and the lower sleeve, the connecting tightness of the sleeve body can be effectively improved, and the phenomenon that the joint is loosened and falls off due to the fact that the connecting end is stretched when the sleeve body is heated can be prevented; and meanwhile, the motor rotor can be wrapped to a certain degree, and can be effectively protected.

Description

Technical Field

[0001] The utility model relates to the field of heat shrinkable protective sleeves, in particular to a heat shrinkable protective sleeve for a micro motor rotor. Background Art

[0002] The micromotor rotor is a key component in a micromotor, responsible for converting electrical energy into mechanical energy and providing power. It typically consists of an electromagnetic coil, a magnet, and a rotating shaft. Current flowing through the coil generates a magnetic field, which interacts with the stator to produce rotational motion. Micromotor rotors are widely used in small electronic devices, precision instruments, and automation systems, offering advantages such as compact size, high power density, and high efficiency. Their performance directly impacts the motor's operating efficiency and stability, making rotor design and protection particularly important.

[0003] Heat shrink sleeves are protective materials that shrink tightly around objects after heating. They are commonly used to protect electrical equipment, electronic components, cables, and more. They offer excellent electrical insulation, high-temperature resistance, corrosion resistance, and waterproof and moisture-proof properties, effectively preventing environmental damage to equipment. Heat shrink sleeves are widely used in micromotors, electronic components, and other fields, extending equipment life, improving reliability, and reducing maintenance costs.

[0004] After searching, the Chinese patent "A weather-resistant 10kV insulating heat shrinkable protective sleeve" authorization announcement number "CN215265761U" discloses a weather-resistant 10kV insulating heat shrinkable protective sleeve, including a heat shrinkable sleeve, a hot melt core, a left sleeve, a right sleeve, an installation device, a fixing groove, a reflective strip, a protective device, a serrated groove and an anti-slip device. The heat shrinkable sleeve is provided with a hot melt core, and its lower end is cut along the central axis. The heat shrinkable sleeve is symmetrically divided into a left sleeve and a right sleeve on both sides. The installation device is fixed with a fixing groove, a reflective strip, a protective device, a serrated groove and an anti-slip device. The mounting device is arranged at the cutting position of the heat shrinkable sleeve, which connects the left sleeve and the right sleeve. A fixing groove is opened on one side of the left sleeve, the reflective strip is fixedly installed in the fixing groove, and the protective device is installed on the outside of the fixing groove. The heat shrinkable sleeve is provided with an anti-slip device. The utility model can effectively and quickly install and fix the heat shrinkable sleeve, avoiding the time-consuming and labor-intensive connection through the cable end. At the same time, the reflective strip can be effectively leaked out after installation, which is convenient for determining the position of the heat shrinkable sleeve during night detection construction, and is very convenient to use.

[0005] Although the anti-dropout device of the above-mentioned heat shrinkable protective sleeve facilitates the rapid installation of the sleeve by the staff, the connection of the ends of the heat shrinkable protective sleeve by inserting a single embedded protrusion into the card slot is prone to cause the two connected ends to move away from each other when the heat shrinkable protective sleeve is heated and shrunk. At the same time, the heat shrinkable sleeve will also be deformed, and there is a risk that the card block will fall off from the card slot due to deformation;

[0006] Therefore, a heat shrinkable protective sleeve for a micromotor rotor is proposed to solve the above problems. Utility Model Content

[0007] The purpose of the present invention is to provide a heat shrinkable protective sleeve for a micromotor rotor in order to solve the above problem, thereby improving the problem that the connection effect of the traditional heat shrinkable protective sleeve is not firm enough.

[0008] The utility model achieves the above-mentioned purpose through the following technical solutions: a heat shrinkable protective sleeve for a micro motor rotor, comprising: a sleeve body;

[0009] The casing body is mainly composed of a lower casing, an upper casing, an inner layer, a middle layer and an outer layer;

[0010] Wherein, the upper sleeve includes a first sleeve body, and a connecting strip is provided on the surface of the first sleeve body;

[0011] The lower sleeve includes a second sleeve located above the first sleeve, a first card slot is provided at the bottom of the right end of the second sleeve, a corresponding slot is provided on the right side of the outer surface of the second sleeve, a second card slot is provided on the outer surface of the corresponding slot, and an adhesive slot is provided on the outer surface of the corresponding slot and at the bottom of the second card slot.

[0012] Preferably, a second card block is fixedly connected to one side of the connecting strip close to the second sleeve body, and the second card block is inserted into the second card slot. By cooperating with the second card slot, the side insertion effect can be utilized to prevent the connecting end of the sleeve body from loosening when the sleeve body is contracted as a whole.

[0013] Preferably, an adhesive strip is provided on one side of the connecting strip close to the second sleeve body, and the surface of the adhesive strip is in contact with the adhesive groove. The adhesive strip can be used to improve the tightness of the connecting end of the sleeve body.

[0014] Preferably, a first clamping block is provided in the first clamping slot, and the first clamping block is fixedly connected to the first sleeve body on a side close to the first sleeve body. The first clamping block cooperates with the first clamping slot to connect the port of the sleeve body.

[0015] Preferably, the first sleeve body and the second sleeve body are connected in one piece, and the inner surfaces of the first sleeve body and the second sleeve body are both provided with protrusions, which can achieve an anti-slip effect between the sleeve body and the motor rotor.

[0016] Preferably, the inner layer is the basic layer of the sleeve body, the middle layer is arranged on the surface of the inner layer, and the outer layer is arranged on the surface of the middle layer. The material of the inner layer is polyolefin, and the material of the middle layer is glass fiber reinforced polyolefin.

[0017] Preferably, the outer layer includes a first wear-resistant layer, a second wear-resistant layer is provided on the surface of the first wear-resistant layer, a third wear-resistant layer is provided on the surface of the second wear-resistant layer, and the materials of the first wear-resistant layer, the second wear-resistant layer and the third wear-resistant layer are polytetrafluoroethylene, nylon and silicone rubber respectively.

[0018] The beneficial effects of the utility model are:

[0019] 1. By arranging the first card slot, the second card slot, the connecting strip, the second card slot, the second card block and the adhesive strip at the connection between the upper sleeve and the lower sleeve, the connection tightness of the sleeve body can be effectively improved, and the phenomenon of loosening and falling off of the connection due to stretching of the connection end when the sleeve body is heated can be prevented. At the same time, it has a certain wrapping effect on the motor rotor and can effectively protect it;

[0020] 2. By adding an inner layer, a middle layer and an outer layer to the sleeve body, the inner layer of polyolefin has good electrical insulation properties. In the application of the motor rotor, it can effectively prevent electrical short circuits or other electrical faults, and at the same time avoid current leakage or contact with other conductive parts, thereby improving the safety and stability of the motor; the middle layer of polyolefin material, a significant feature of the glass fiber reinforced polyolefin material is that it greatly improves the mechanical strength and rigidity of the material. The addition of glass fiber makes the middle layer protective sleeve more resistant to tension, compression and impact, and can effectively prevent material damage or deformation caused by high-speed rotation, vibration or external impact of the rotor, and enhance the overall structural stability of the rotor. The first wear-resistant layer, the second wear-resistant layer and the third wear-resistant layer of polytetrafluoroethylene, nylon and silicone rubber materials in the outer layer can effectively improve the wear resistance, aging resistance and mechanical protection of the heat shrink protective sleeve, and also provide protection for the motor rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a structural diagram of the lower housing of the present utility model;

[0023] Figure 3 This is a structural diagram of the upper sleeve of the utility model;

[0024] Figure 4 This is a schematic diagram of the layered structure of the sleeve body of the present utility model;

[0025] Figure 5 This is a schematic diagram of the structural composition of the outer layer of the utility model.

[0026] In the figure: 1. sleeve body; 101. lower sleeve; 1011. second sleeve; 1012. connecting strip; 1013. second clamping block; 1014. first clamping block; 1015. adhesive strip; 1016. protrusion; 102. upper sleeve; 1021. second clamping slot; 1022. first clamping slot; 1023. corresponding slot; 1024. adhesive slot; 1025. first sleeve; 103. inner layer; 104. middle layer; 105. outer layer; 1051. first wear-resistant layer; 1052. second wear-resistant layer; 1053. third wear-resistant layer. DETAILED DESCRIPTION

[0027] 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.

[0028] When implementing: Figure 1-5 As shown, a heat shrinkable protective sleeve for a micro motor rotor includes: a sleeve body 1; the sleeve body 1 is mainly composed of a lower sleeve 101, an upper sleeve 102, an inner layer 103, a middle layer 104 and an outer layer 105;

[0029] like Figure 2 、 Figure 3 and Figure 4 As shown, the upper sleeve 102 includes a first sleeve 1025, and a connecting strip 1012 is provided on the surface of the first sleeve 1025; the lower sleeve 101 includes a second sleeve 1011 located above the first sleeve 1025, and a first card slot 1022 is provided at the bottom of the right end of the second sleeve 1011, and a corresponding groove 1023 is provided on the right side of the outer surface of the second sleeve 1011, and a second card slot 1021 is provided on the outer surface of the corresponding groove 1023, and an adhesive groove 1024 is provided on the outer surface of the corresponding groove 1023 and located at the bottom of the second card slot 1021; the connecting strip 1012 is close to the side of the second sleeve 1011 A second clamping block 1013 is fixedly connected and inserted into the second clamping slot 1021. An adhesive strip 1015 is provided on the side of the connecting strip 1012 close to the second sleeve 1011, and the surface of the adhesive strip 1015 contacts the adhesive slot 1024. A first clamping block 1014 is provided in the first clamping slot 1022, and the side of the first clamping block 1014 close to the first sleeve 1025 is fixedly connected to the first sleeve 1025. The first sleeve 1025 is integrally connected to the second sleeve 1011, and the inner surfaces of the first sleeve 1025 and the second sleeve 1011 are both provided with protrusions 1016.

[0030] When the sleeve body 1 is sleeved on the surface of the motor rotor: first open the sleeve body 1, then sleeve it on the appropriate position on the surface of the motor rotor, and then close the connection end of the first sleeve body 1025 and the second sleeve body 1011. At this time, the first clamping block 1014 will be inserted into the first clamping groove 1022, and then the connecting strip 1012 will be fitted into the corresponding groove 1023, and the second clamping block 1013 on the surface of the connecting strip 1012 will be inserted into the second clamping groove 1021. At the same time, the adhesive strip 1015 will also be bonded to the adhesive groove 1024. At this time, the sleeve body 1 will be installed;

[0031] Then, a hot air gun can be used to bake the sleeve body 1. During baking, the sleeve body 1 will continue to shrink, and the connecting strip 1012 will be pulled. However, since the second clamping block 1013 is inserted into the second clamping groove 1021 from the side, as the sleeve body 1 continues to shrink, the connecting strip 1012 will be continuously tightened, thereby preventing the connecting end of the sleeve body 1 from loosening and falling off. In addition, in conjunction with the first clamping block 1014 and the first clamping groove 1022, a double insurance effect can be achieved.

[0032] The inner layer 103 is the basic layer of the sleeve body 1, the middle layer 104 is arranged on the surface of the inner layer 103, and the outer layer 105 is arranged on the surface of the middle layer 104. The material of the inner layer 103 is polyolefin, and the material of the middle layer 104 is glass fiber reinforced polyolefin; the outer layer 105 includes a first wear-resistant layer 1051, a second wear-resistant layer 1052 is arranged on the surface of the first wear-resistant layer 1051, and a third wear-resistant layer 1053 is arranged on the surface of the second wear-resistant layer 1052. The materials of the first wear-resistant layer 1051, the second wear-resistant layer 1052 and the third wear-resistant layer 1053 are polytetrafluoroethylene, nylon and silicone rubber, respectively.

[0033] By adding an inner layer 103, a middle layer 104, and an outer layer 105 to the bushing body 1, the polyolefin of the inner layer 103 has good electrical insulation properties. In the application of the motor rotor, it can effectively prevent electrical short circuits or other electrical faults, and also prevent current leakage or contact with other conductive parts, thereby improving the safety and stability of the motor.

[0034] The polyolefin material of the middle layer 104 is a notable feature of glass fiber reinforced polyolefin material, which greatly improves the mechanical strength and rigidity of the material. The addition of glass fiber makes the middle layer 104 protective sleeve more resistant to tension, compression, and impact. It can effectively prevent material damage or deformation caused by high-speed rotation, vibration, or external impact of the rotor, and enhance the overall structural stability of the rotor.

[0035] The polytetrafluoroethylene, nylon and silicone rubber materials of the first wear-resistant layer 1051, the second wear-resistant layer 1052 and the third wear-resistant layer 1053 in the outer layer 105 can effectively improve the wear resistance, aging resistance and mechanical protection of the heat shrinkable protective tube, and also provide protection for the motor rotor;

[0036] When the utility model is in use, in specific use, first the staff opens the sleeve body 1, then sleeves it on the surface of the motor rotor, and then closes the connection end of the first sleeve 1025 and the second sleeve 1011. At this time, the first card block 1014 will be inserted into the first card groove 1022, which can connect the end of the first sleeve 1025 and the second sleeve 1011. Then the staff will fit the connecting strip 1012 into the corresponding groove 1023, and insert the second card block 1013 on the surface of the connecting strip 1012 into the second card groove 1021. At the same time, the adhesive strip 1015 will also When the sleeve body 1 is in contact with the inner wall of the bonding groove 1024, the sleeve body 1 is installed. Then the staff can use a hot air gun to bake the sleeve body 1. During baking, the sleeve body 1 will continue to shrink. At this time, the connecting strip 1012 will be pulled. However, since the second clamping block 1013 is inserted into the second clamping groove 1021 from the side, the connecting strip 1012 will be continuously tightened as the sleeve body 1 continues to shrink, thereby preventing the connecting end of the sleeve body 1 from loosening and falling off. In combination with the first clamping block 1014 and the first clamping groove 1022, a double insurance effect can be achieved.

[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A heat shrinkable protective sleeve for a micromotor rotor, characterized in that: include: Casing body (1); The sleeve body (1) is mainly composed of a lower sleeve (101), an upper sleeve (102), an inner layer (103), a middle layer (104) and an outer layer (105); The upper sleeve (102) comprises a first sleeve body (1025), and a connecting strip (1012) is provided on the surface of the first sleeve body (1025); The lower sleeve (101) comprises a second sleeve (1011) located above the first sleeve (1025); a first slot (1022) is provided at the bottom of the right end of the second sleeve (1011); a corresponding slot (1023) is provided on the right side of the outer surface of the second sleeve (1011); a second slot (1021) is provided on the outer surface of the corresponding slot (1023); and a bonding slot (1024) is provided on the outer surface of the corresponding slot (1023) and located at the bottom of the second slot (1021).

2. The heat shrinkable protective sleeve for a micromotor rotor according to claim 1, characterized in that: A second clamping block (1013) is fixedly connected to one side of the connecting strip (1012) close to the second sleeve (1011), and the second clamping block (1013) is plugged into the second clamping slot (1021).

3. The heat shrinkable protective sleeve for a micromotor rotor according to claim 1, characterized in that: An adhesive strip (1015) is provided on one side of the connecting strip (1012) close to the second sleeve (1011), and a surface of the adhesive strip (1015) is in contact with the adhesive groove (1024).

4. The heat shrinkable protective sleeve for a micromotor rotor according to claim 1, characterized in that: A first clamping block (1014) is provided in the first clamping slot (1022), and a side of the first clamping block (1014) close to the first sleeve (1025) is fixedly connected to the first sleeve (1025).

5. The heat shrinkable protective sleeve for a micromotor rotor according to claim 1, characterized in that: The first sleeve (1025) and the second sleeve (1011) are connected in an integral manner, and the inner surfaces of the first sleeve (1025) and the second sleeve (1011) are both provided with protrusions (1016).

6. The heat shrinkable protective sleeve for a micromotor rotor according to claim 1, characterized in that: The inner layer (103) is the basic layer of the sleeve body (1), the middle layer (104) is arranged on the surface of the inner layer (103), and the outer layer (105) is arranged on the surface of the middle layer (104). The material of the inner layer (103) is polyolefin, and the material of the middle layer (104) is glass fiber reinforced polyolefin.

7. The heat shrinkable protective sleeve for a micromotor rotor according to claim 1, characterized in that: The outer layer (105) comprises a first wear-resistant layer (1051), a second wear-resistant layer (1052) is provided on the surface of the first wear-resistant layer (1051), and a third wear-resistant layer (1053) is provided on the surface of the second wear-resistant layer (1052), wherein the materials of the first wear-resistant layer (1051), the second wear-resistant layer (1052) and the third wear-resistant layer (1053) are polytetrafluoroethylene, nylon and silicone rubber, respectively.

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