Front cover of an external bearing

Abstract

The application discloses a novel external bearing front cover, which comprises a first mounting flange arranged on a bearing mounting hole of the front cover, a first oil collecting groove arranged on the first mounting flange, a mounting groove arranged in the front cover, and a first component mounting part arranged on the mounting groove; a bearing fixedly arranged in the bearing mounting hole, a first connecting piece provided with a plug and an elastic sheet and arranged in the mounting groove, a second connecting piece provided with a second plug and a second elastic sheet and arranged in the mounting groove, and a carbon fine mounting piece arranged in the front cover. The front cover has the advantages that welding production procedures and subsequent treatment procedures are saved when components are mounted, foreign matters are prevented from entering the motor from the bearing mounting hole and polluting the components in the motor, the motor is prevented from being damaged, the assembly is simple, clean and environmentally friendly in production, and the motor is stable and reliable in use.

Description

Technical Field

[0001] This invention relates to the field of motor equipment technology, and in particular to an external bearing front cover. Background Technology

[0002] In existing motor front covers, the bearing is typically pressed into the bearing hub from the inside of the front cover, with the bearing and bearing hub having an interference fit. During actual use, if the lubricating oil inside the bearing evaporates under high temperature conditions or seeps out due to pump suction during operation, it will directly contaminate motor components inside the front cover, such as the commutator. This causes a mixture of carbon powder and oil to accumulate in one or more slots between the three copper plates of the commutator, resulting in short circuits between the commutator plates and ultimately premature motor failure.

[0003] Furthermore, the existing design of mounting bearings on the inside of the front cover can easily contaminate the inside of the front cover during assembly. Moreover, the position of the bearings directly affects the axial displacement of the motor rotor and the extension length of the rotor shaft, which in turn affects the position design of other components.

[0004] Traditional motors typically involve soldering sheet components onto a PCBA (Printed Circuit Board Assembly), and then soldering the PCBA onto the motor parts. This process involves numerous assembly and soldering steps, resulting in higher costs and the need for multiple environmentally friendly processes. Furthermore, the front cover assembly components generally cannot be cleaned during the process, posing a potential safety hazard.

[0005] To mitigate electromagnetic interference in existing micro motors, a ring-shaped varistor is typically soldered to the rotor's commutator to mitigate the instantaneous voltage surge (reaching 200-500 volts, depending on the motor's structure) generated during power-on or power-off. The soldering process for this ring-shaped varistor generally involves: loading the varistor → aligning the electrodes → three-point soldering (connecting the three electrodes of the ring-shaped varistor to the three copper hooks of the commutator via solder) → cleaning solder residue (rosin), etc., resulting in high motor manufacturing costs. Furthermore, the soldering process is prone to defects such as cold solder joints and false solder joints; and poor concentricity and perpendicularity between the ring-shaped varistor and the commutator lead to uneven solder joint sizes, causing rotor imbalance and exacerbating motor noise and vibration.

[0006] Furthermore, problems can easily occur during welding and subsequent welding and cleaning processes, leading to motor failure or poor contact in the internal circuitry.

[0007] Therefore, there is an urgent need for an external bearing front cover that can solve one or more of the above problems. Summary of the Invention

[0008] To address one or more problems existing in the prior art, the present invention provides an external bearing front cover. The technical solution adopted by the present invention to solve the above problems is as follows: a first mounting flange is provided on the inner sidewall of the bearing mounting hole of the front cover; a first oil collection groove is provided on the upper surface of the first mounting flange; a mounting groove is provided inside the front cover; and a first component mounting part is provided on the mounting groove.

[0009] The bearing is fixedly installed in the bearing mounting hole. The first mounting flange abuts against and limits the bearing. The first oil collection groove cooperates with the bearing and absorbs and releases the lubricating oil on the bearing.

[0010] A first connector is provided with a plug and a spring contact. The plug is used to make an electrical connection with an external circuit. The spring contact cooperates with the first component mounting part. The first connector is installed in the mounting groove and is located on the left side inside the front cover.

[0011] The second connector is provided with a second plug and a second spring contact. The second plug is used for electrical connection with an external circuit. The second spring contact cooperates with the first component mounting part. The second connector is installed in the mounting groove and is located on the right side inside the front cover.

[0012] A carbon fiber mounting component, wherein the carbon fiber mounting component is provided with a carbon fiber mounting groove, and the carbon fiber mounting component is installed inside the front cover;

[0013] The spring and the second spring fix the component mounted on the first component mounting part, and the component mounted on the first component mounting part is electrically connected to the first connector and the second connector by means of pressing contact.

[0014] Furthermore, the second connector is divided into two parts: a front connector and a rear connector;

[0015] The front connector is provided with a first mounting spring, which acts on the side wall of the mounting groove, and the second spring is provided on the front connector;

[0016] The rear connector is provided with a second mounting spring, which acts on the side wall of the mounting groove, and the second plug is provided on the rear connector;

[0017] The second component is disposed between the front connector and the rear connector, and is electrically connected to the front connector and the rear connector.

[0018] Furthermore, a second component mounting portion is provided on the mounting groove, and the second component contacts the front connector and the rear connector in the second component mounting portion.

[0019] Furthermore, the end of the front connector is provided with a first connecting portion, and the first mounting spring is disposed on the first connecting portion;

[0020] The rear connector has a second connecting portion at its end, and the second mounting spring is disposed on the second connecting portion.

[0021] Furthermore, the first component mounting part consists of two adhesive walls, with the component disposed between the two adhesive walls, and the two adhesive walls serving to limit the position of the component;

[0022] The front cover is provided with a plug protrusion slot, which cooperates with the plug and the second plug.

[0023] Furthermore, the diameter of the inner hole formed by the first mounting flange is equal to or greater than the inner diameter of the bearing;

[0024] The diameter of the first oil collection groove is larger than the diameter of the inner hole formed by the first mounting flange, and the diameter of the first oil collection groove is smaller than the diameter of the bearing mounting hole.

[0025] The first mounting flange is annular, and the first oil collection groove is circular.

[0026] Furthermore, it also includes: a bearing hub, which is fixedly installed on the bearing mounting hole of the front cover, and the bearing hub is provided with a through hole;

[0027] The first mounting flange is disposed on the inner sidewall of the through hole, and the first oil collection groove is disposed on the upper surface of the first mounting flange;

[0028] The bearing is fixedly installed in the through hole. The first mounting flange abuts against and limits the bearing. The first oil collection groove cooperates with the bearing and absorbs and releases the lubricating oil on the bearing.

[0029] And a motor using the aforementioned external bearing front cover, wherein the magnets inside the motor are fixedly installed using magnetic adhesive.

[0030] The beneficial effects of this invention are as follows: By setting corresponding installation and usage structures on the front cover, the bearing, the first connecting member, the second connecting member, and the carbon fiber mounting member are cleverly installed together. This achieves component installation by spring-loaded compression, eliminating welding processes, soldering treatment processes, and the PCBA installed inside the motor. The installation is secure, the electrical connection is stable, and it facilitates connection to external circuits, while also reducing manufacturing costs. Multiple components such as varistors and thermal protectors can be installed internally. The assembly process is simple, reliable, and efficient. Eliminating the need for auxiliary components such as solder wire facilitates cleaning. The manufacturing process is environmentally friendly and energy-saving, saving internal space and reducing the overall size, making it easier to make the motor smaller. This invention also prevents the lubricating oil inside the bearing from evaporating at high temperatures or seeping out during operation due to pump suction, which could directly contaminate motor components inside the front cover, such as the commutator. This would cause a mixture of carbon powder and oil to accumulate in one or more slots between the three copper plates of the commutator, leading to short circuits between the commutator plates and ultimately motor failure. Furthermore, its modular and integrated designs make it suitable for various applications; the assembly and manufacturing processes are simple, resulting in low production costs and high reliability. Since the dimensions of the bearing assembly positions are independent, they do not affect the rotor dimensions, thus improving manufacturing precision. All of these factors significantly enhance the practical value of this invention. Attached Figure Description

[0031] Figure 1 This is a perspective view of an external bearing front cover according to the present invention;

[0032] Figure 2 This is a cross-sectional view of an external bearing front cover according to the present invention. Figure 1 ;

[0033] Figure 3 This is a cross-sectional view of an external bearing front cover according to the present invention. Figure 1 A magnified view of a portion of point I;

[0034] Figure 4 This is a cross-sectional view of an external bearing front cover according to the present invention. Figure 2 ;

[0035] Figure 5 This is a cross-sectional view of an external bearing front cover according to the present invention. Figure 2 A magnified view of section II;

[0036] Figure 6 This is a bottom view of an external bearing front cover according to the present invention;

[0037] Figure 7 This is an axial sectional view of an external bearing front cover according to the present invention;

[0038] Figure 8 This is an exploded view of an external bearing front cover according to the present invention;

[0039] Figure 9 This is a schematic diagram of the front cover body of an external bearing front cover according to the present invention;

[0040] Figure 10 This invention relates to a localized explosion of an external bearing front cover. Figure 1 ;

[0041] Figure 11 This invention relates to a localized explosion of an external bearing front cover. Figure 2 ;

[0042] Figure 12 This is a schematic diagram of the second connecting member of an external bearing front cover according to the present invention;

[0043] Figure 13 This is a cross-sectional view of the existing motor front cover;

[0044] Figure 14 A schematic diagram illustrating the application of an existing built-in bearing motor in a locker;

[0045] Figure 15 This is a schematic diagram illustrating the application of an external bearing front cover of the present invention in a locking device;

[0046] Figure 16 This is a sectional view along the BB direction from the bottom view of an external bearing front cover according to the present invention.

[0047] [Attached image labels]

[0048] 101··· Plastic shell

[0049] 102···Installation trench

[0050] 103···First Component Assembly Department

[0051] 104···Second Component Mounting Section

[0052] 105··· Matching the protrusion

[0053] 110··· Plug extends out of slot

[0054] 120··· Bearing mounting hole

[0055] 121···First mounting flange

[0056] 122···First oil collection tank

[0057] 123···Inner hole

[0058] 130··· Bearing Hub

[0059] 131··· Through Hole

[0060] 140 bearing

[0061] 150··· Traditional motor front cover

[0062] 151··· Traditional Motor Iron Casing

[0063] 152···Magnets

[0064] 160··· rotor

[0065] 170...worm gear

[0066] 180... First interlocker glue wall

[0067] 181···Second Locking Device Glue Wall

[0068] 201···First Connector

[0069] 202 plug

[0070] 203···Protrusion

[0071] 204 shrapnel

[0072] 210···Carbon Precision Mounting Components

[0073] 211···Connecting slot

[0074] 212···Carbon Dioxide Mounting Slot

[0075] 301···Front Connector

[0076] 302···First Connecting Part

[0077] 303··· First installation spring

[0078] 304 rear connector

[0079] 305···Second Connecting Part

[0080] 306···Second Installation Spring

[0081] 307···Contacts

[0082] 310···Second Connector

[0083] 312···Second plug

[0084] 313···Second protrusion

[0085] 314...Second fragment

[0086] 401···Carbon Essence

[0087] 501 Varistor

[0088] 502 Thermal Protector

[0089] 510···First Current Loop

[0090] 520···Second Current Loop

[0091] 530··· Ring varistor. Detailed Implementation

[0092] To make the above-mentioned objects, features, and advantages of the present invention more readily understood, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0093] like Figures 1-12 , Figure 16 As shown, the present invention discloses an external bearing front cover. The bearing mounting hole 120 of the front cover 101 is provided with a first mounting flange 121 on the inner side wall. The upper surface of the first mounting flange 121 is provided with a first oil collection groove 122. The front cover 101 is provided with a mounting groove 102. The mounting groove 102 is provided with a first component mounting part 103.

[0094] The bearing 140 is fixedly installed in the bearing mounting hole 120. The first mounting flange 121 abuts against the bearing 140 and limits the bearing 140. The first oil collection groove 122 cooperates with the bearing 140 and absorbs and releases the lubricating oil on the bearing 140.

[0095] The first connector 201 is provided with a plug 202 and a spring contact 204. The plug 202 is used to connect to an external circuit, and the spring contact 204 cooperates with the first component mounting part 103. The first connector 201 is installed in the mounting groove 102 and is located on the left side of the front cover 101.

[0096] The second connector 310 is provided with a second plug 312 and a second spring 314. The second plug 312 is used to connect to an external circuit, and the second spring 314 cooperates with the first component mounting part 103. The second connector 310 is installed in the mounting groove 102 and is located on the right side of the front cover 101.

[0097] Carbon ink mounting component 210, the carbon ink mounting component 210 is provided with a carbon ink mounting groove 212, and the carbon ink mounting component 210 is installed in the front cover 101;

[0098] The spring 204 and the second spring 314 fix the components mounted on the first component mounting part 103. The components mounted on the first component mounting part 103 are electrically connected to the first connector 201 and the second connector 310 by means of pressing contact.

[0099] It should be noted that the motor using this invention does not require a PCBA or a ring-shaped varistor to be installed inside the rotor or iron casing. The varistor is a chip type and is installed within the first component mounting portion 103. Generally, a chip varistor is mounted on the first component mounting portion 103, and soldering is not required. Figure 6 As shown, the current direction inside the front cover is indicated by the first current loop 510 and the second current loop 520 in the figure.

[0100] It should be noted that, as Figure 13 As can be seen, the bearing 140 is installed inside the conventional motor front cover 150. When the rotor rotates at high speed, the high speed causes the air pressure near the surface of the shaft to be lower than the air pressure inside the oil-impregnated bearing, generating a pumping effect to draw out the lubricating oil from the bearing and use it as lubricant for the bearing's inner diameter surface and shaft. However, due to the high-speed rotation of the rotor shaft, the lubricating oil is easily thrown downwards, and the thrown-down lubricating oil will enter the internal components of the motor, contaminating the motor's interior. Through comparison... Figure 4 and Figure 7 ,visible Figure 4 The first oil collection groove 122 in the motor will block and store the splashed lubricating oil. When the motor stops running, the negative pressure between the oil-impregnated bearing and the rotor disappears, and the air pressure outside the oil-impregnated bearing is greater than the air pressure inside the bearing. After a short period of storage, the lubricating oil on the first oil collection groove 122 and the surface of the oil-impregnated bearing is drawn back to the bearing 140 by capillary action. This cycle repeats, and the lubricating oil in the bearing 140 can be recycled or the pollutants generated during long-term operation will not enter the interior of the motor.

[0101] Specifically, such as Figure 11 , Figure 12 As shown, the second connector 310 is divided into two parts: a front connector 301 and a rear connector 304.

[0102] The front connector 301 is provided with a first mounting spring 303, which acts on the side wall of the mounting groove 102, and the second spring 314 is provided on the front connector 301.

[0103] The rear connector 304 is provided with a second mounting spring 306, which acts on the side wall of the mounting groove 102, and the second plug 312 is provided on the rear connector 304.

[0104] The first mounting spring 303 and the second mounting spring 306 are used to cooperate in mounting components and to provide a pressing contact.

[0105] The second component is disposed between the front connector 301 and the rear connector 304, and is electrically connected to the front connector 301 and the rear connector 304.

[0106] It should be pointed out that, as Figure 10 , Figure 16 As shown, generally speaking, the spring 204 and the second spring 314 are L-shaped and form a barb to prevent the components mounted on the first component mounting part 103 from falling off.

[0107] Specifically, such as Figure 11 As shown, the front connector 301 and the rear connector 304 are provided with contact points 307 on their side walls. The contact points 307 are used for electrical connection with components or for mounting components.

[0108] Specifically, such as Figure 1 , Figures 6-9 As shown, a second component mounting portion 104 is provided on the mounting groove 103, and the second component contacts the front connector 301 and the rear connector 304 at the second component mounting portion 104. Generally, the second component mounting portion 104 is used to mount the thermal protector 502, and the second component mounting portion 104 is a groove formed by widening the mounting groove 102.

[0109] Specifically, such as Figure 11 As shown, a second component mounting portion 104 is provided on the mounting groove 103, and the component contacts the front connector 301 and the rear connector 304 on the second component mounting portion 104. Generally, the second component mounting portion 104 is used to mount the thermal protector 502, and the second component mounting portion 104 is a groove formed by widening the mounting groove 102.

[0110] Specifically, such as Figure 6 , Figure 7As shown, the first component mounting portion 103 consists of two adhesive walls, with the component positioned between them. The two adhesive walls act as a limiting element for the component. The front cover 101 has a plug extension slot 110, which engages with the plug 202 and the second plug 312. Generally, the bottom of the first component mounting portion 103 has a mating protrusion 105, which is used to lift the component; that is, the mating protrusion 105 is positioned between the two adhesive walls. Generally, the gap between the two adhesive walls communicates with the mounting groove 102, and the distance between the two adhesive walls is less than the sum of the component thickness and the width of the "L"-shaped barb (the spring piece 204 and the second spring piece 314), thus preventing detachment.

[0111] like Figure 8 As shown, in actual use, a surface-mount varistor 501 and a thermal protector 502 are installed. The surface-mount varistor 501 and the thermal protector 502 are pressed together by a spring clip and electrically connected to the first connector 201 and the second connector 310. At this time, the second connector 310 is divided into two parts. If the thermal protector 502 is not required, the second connector 310 does not need to be divided. In this case, the second connector 310 has the same shape as the first connector 201 and is installed symmetrically. After the components are installed, the first connector 201, the second connector 310, and the components form a circuit. When the plug 202 and the second plug 312 are connected to a power source, the components can function normally.

[0112] Specifically, such as Figure 3 As shown, generally speaking, the diameter of the inner hole 123 formed by the first mounting flange 121 is equal to or greater than the inner hole diameter of the bearing 140; the diameter of the first oil collection groove 122 is greater than the diameter of the inner hole 123 formed by the first mounting flange 121, and the diameter of the first oil collection groove 122 is smaller than the diameter of the bearing mounting hole 120; the first mounting flange 121 is annular, and the first oil collection groove 122 is circular.

[0113] When the front cover uses a split design to securely mount the bearing, such as Figure 4 , Figure 5 As shown, it includes: a bearing hub 130, which is fixedly installed on the bearing mounting hole 120 of the front cover 101, and the bearing hub 130 is provided with a through hole 131;

[0114] The first mounting flange 121 is disposed on the inner sidewall of the through hole 131, and the first oil collection groove 122 is disposed on the upper surface of the first mounting flange 121;

[0115] The bearing 140 is fixedly installed in the through hole 131. The first mounting flange 121 abuts against the bearing 140 and limits the bearing 140. The first oil collection groove 122 cooperates with the bearing 140 and absorbs and releases the lubricating oil on the bearing 140.

[0116] It should be noted that the principle of the split-type external bearing motor front cover is the same as that of the above-mentioned external bearing motor front cover. The only difference is that the positions of the first mounting flange 121 and the first oil collection groove 122 are changed from the bearing mounting hole 120 on the front cover 101 to the bearing hub 130, forming a split design to be applicable to more scenarios.

[0117] The principle behind the split-type external bearing motor front cover protecting the motor's interior from oil contamination is the same as that of the external bearing motor front cover, and will not be repeated here.

[0118] It should be noted that on the front cover of the split external bearing motor, the diameter of the inner hole 123 formed by the first mounting flange 121 is equal to or greater than the inner hole diameter of the bearing 140; the diameter of the first oil collection groove 122 is greater than the diameter of the inner hole 123 formed by the first mounting flange 121, and the diameter of the first oil collection groove 122 is smaller than the diameter of the bearing mounting hole 120; the first mounting flange 121 is annular, and the first oil collection groove 122 is circular.

[0119] And a motor using an external bearing front cover, in which the magnets used inside are fixed by using magnetic glue, thereby eliminating the need for the slingshot on the motor housing and the L-shaped limit block stamped at the bottom of the motor housing, reducing assembly difficulty, improving production efficiency, and at the same time, the assembly position of the magnets is more accurate and cannot be displaced.

[0120] It should be noted that, due to the convenient and quick assembly of the externally mounted bearings, the bearing 140 is generally fixed by an interference fit, and the bearing hub 130 is also generally fixed by an interference fit, resulting in high reliability and low cost. Furthermore, when the rotor rotates at high speed, it can prevent foreign matter (lubricating oil, grease) from entering the motor through the bearing mounting holes, contaminating internal components, and causing motor failure.

[0121] like Figure 13 As shown, motors using traditional front covers typically have oil baffles or separators inside. However, when the rotor 160 rotates at high speed, the bearing oil can still easily evaporate or creep through the oil baffles or separators and enter the copper plates of the commutator, contaminating the inside of the motor. In contrast, the front cover in this technology, through the cooperation of the first mounting flange 121 and the first oil collection groove 122, can effectively prevent the evaporation and creep of the bearing oil, thus avoiding contamination of the inside of the motor.

[0122] like Figure 14 As shown, in existing conventional motor front covers with built-in bearings, when installed in a locker, the locker requires a first locker rubber wall 180 and a second locker rubber wall 181. During use, if the axial force applied by the mating gears is to the left, the first locker rubber wall 180 supports the worm end to bear the axial force. If the axial force applied by the mating gears is to the right, the worm 170 contacts the shaft end first, and then the force is transmitted through the shaft end to the second locker rubber wall 181. Ultimately, the axial force is borne by the worm 170 and the shaft end, and by the second locker rubber wall 181. This makes the design structure of existing motor front covers with built-in bearings and matching lockers complex, with large cumulative tolerances and low reliability. Furthermore, the axial force generated by the gears causes friction between the rotor shaft end and the locker rubber wall when they contact each other. To reduce this friction and improve the locker's efficiency, the rotating shaft end on the rotor is usually designed as a ball end. This design results in a small contact area between the shaft end and the locking device's rubber wall. To avoid or mitigate damage to the locking device's rubber wall from the rotor shaft end, the locking device housing material also requires high strength, which translates to high cost.

[0123] like Figure 14 As shown, the existing ring-shaped varistor 530 is generally mounted on the rotor 160 and is not located inside the front cover. The ring-shaped varistor 530 is specially designed to be mounted on the rotor 160, and is more expensive than ordinary pressure plate varistors. Oil stains from the bearings are also more likely to seep into the surface of the resistor, causing motor failure.

[0124] When using this technology, such as Figure 15 As shown, if the axial force applied by the mating gear is to the left, the first locking device rubber wall 180 supports the worm end to bear the axial force. If the axial force applied by the mating gear is to the right, the worm 170 does not contact the shaft end, and the axial force is directly borne between the worm 170 and the bearing end, so that the rightmost second locking device rubber wall 181 can be eliminated. This design is simple, reliable, and reduces the requirements for the locking device housing material.

[0125] In summary, this invention, by setting corresponding installation and usage structures on the front cover 101, cleverly integrates the bearing 140, the first connector 201, the second connector 310, and the carbon fiber mounting component 210, achieving component installation via spring clip compression. This eliminates welding processes, soldering treatments, and the need for a PCBA inside the motor, resulting in secure installation, stable electrical connections, convenient connection to external circuits, and reduced manufacturing costs. Multiple components such as varistors and thermal protectors can be installed internally. The assembly process is simple, reliable, and efficient. Eliminating auxiliary components such as solder wire facilitates cleaning, and the manufacturing process is environmentally friendly and energy-saving. It saves internal space while reducing the overall size, making the motor smaller. Furthermore, it prevents the lubricating oil inside the bearing from evaporating at high temperatures or seeping out during operation due to pump suction, which could directly contaminate motor components inside the front cover, such as the commutator. This would prevent the accumulation of a mixture of carbon powder and oil in one or more slots between the three copper plates of the commutator, leading to short circuits between the commutator plates and ultimately motor failure. Furthermore, the invention employs both split and integrated oil-impregnated bearing external mounting designs, making it suitable for various applications. Assembly and manufacturing processes are simple, resulting in low production costs and high reliability. Since the dimensions of the bearing assembly positions are independent, they do not affect the rotor dimensions, thus improving manufacturing precision. All of these factors significantly enhance the practical value of this invention.

[0126] The above-described embodiments are merely examples illustrating one or more implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An external bearing front cover, characterized in that, A first mounting flange is provided on the inner side wall of the bearing mounting hole of the front cover, and a first oil collection groove is provided on the upper surface of the first mounting flange. A mounting groove is provided inside the front cover, and a first component mounting part is provided on the mounting groove. The bearing is fixedly installed in the bearing mounting hole. The first mounting flange abuts against and limits the bearing. The first oil collection groove cooperates with the bearing and absorbs and releases the lubricating oil on the bearing. A first connector is provided with a plug and a spring contact. The plug is used to make an electrical connection with an external circuit. The spring contact cooperates with the first component mounting part. The first connector is installed in the mounting groove and is located on the left side inside the front cover. The second connector is provided with a second plug and a second spring contact. The second plug is used for electrical connection with an external circuit. The second spring contact cooperates with the first component mounting part. The second connector is installed in the mounting groove and is located on the right side inside the front cover. A carbon fiber mounting component, wherein the carbon fiber mounting component is provided with a carbon fiber mounting groove, and the carbon fiber mounting component is installed inside the front cover; The spring and the second spring fix the component mounted on the first component mounting part, and the component mounted on the first component mounting part is electrically connected to the first connector and the second connector by means of pressing contact; The second connector is divided into two parts: a front connector and a rear connector; The front connector is provided with a first mounting spring, which acts on the side wall of the mounting groove, and the second spring is provided on the front connector; The rear connector is provided with a second mounting spring, which acts on the side wall of the mounting groove, and the second plug is provided on the rear connector; The second component is disposed between the front connector and the rear connector, and is electrically connected to the front connector and the rear connector.

2. The external bearing front cover according to claim 1, characterized in that, The mounting groove is provided with a second component mounting part, and the second component contacts the front connector and the rear connector in the second component mounting part.

3. The external bearing front cover according to claim 1, characterized in that, The end of the front connector is provided with a first connecting part, and the first mounting spring is disposed on the first connecting part; The rear connector has a second connecting portion at its end, and the second mounting spring is disposed on the second connecting portion.

4. The external bearing front cover according to claim 1, characterized in that, The first component mounting part consists of two adhesive walls, and the component is disposed between the two adhesive walls. The two adhesive walls limit the position of the component. The front cover is provided with a plug protrusion slot, which cooperates with the plug and the second plug.

5. An external bearing front cover according to claim 1, characterized in that, The diameter of the inner hole formed by the first mounting flange is equal to or greater than the inner diameter of the bearing. The diameter of the first oil collection groove is larger than the diameter of the inner hole formed by the first mounting flange, and the diameter of the first oil collection groove is smaller than the diameter of the bearing mounting hole. The first mounting flange is annular, and the first oil collection groove is circular.

6. The external bearing front cover according to claim 1, characterized in that, The bearing hub is fixedly installed on the bearing mounting hole of the front cover, and the bearing hub is provided with a through hole; The first mounting flange is disposed on the inner sidewall of the through hole, and the first oil collection groove is disposed on the upper surface of the first mounting flange; The bearing is fixedly installed in the through hole. The first mounting flange abuts against and limits the bearing. The first oil collection groove cooperates with the bearing and absorbs and releases the lubricating oil on the bearing.

7. A motor using an external bearing front cover as described in claim 1, characterized in that, The magnets inside the motor are fixed in place using magnetic adhesive.

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