Direct-current brushless slide rail motor and automobile seat

Abstract

According to the direct-current brushless sliding rail motor and the automobile seat, the rotor iron core in the rotor assembly is arranged close to the upper end cover or the lower end cover, the two ends of the rotor rotating shaft are connected with the upper end bearing on the upper end cover and the lower end bearing of the lower end cover, and the rotor assembly is sleeved with the stator assembly. The rotor core is close to any end of the rotor rotating shaft on the rotor rotating shaft, so that the rotor core is staggered relative to the stator assembly, the rotor assembly generates an axial magnetic pulling force, the rotor rotating shaft moves towards one end, one end of the rotor assembly is in contact friction with the upper end bearing or the lower end bearing, and the other end is in a suspended state; a certain distance is kept between the lower end bearing and the upper end bearing, so that one end of the rotor rotating shaft has no friction sound, half of the friction sound is reduced, and the noise reduction effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a direct-current brushless slide rail motor and an automobile seat. BACKGROUND

[0002] The automobile seat framework is the core component of the automobile seat, which provides the necessary support for the passenger's body, ensures the stability and comfort during driving, and allows the passenger to adjust the position of the seat (such as forward and backward, high and low, inclination angle, etc.) according to individual needs to achieve the best riding posture. In the electric adjustment system of the automobile seat, adjustments such as forward and backward, high and low, and inclination are included, and the slide rail motor is one of the components, which is responsible for driving the seat to move on the slide rail to adjust the automobile seat in the forward and backward direction.

[0003] Most of the existing automobile seat slide rail motors on the market are brush motors, which are used in automobiles and are prone to generate a lot of noise, making users feel uncomfortable and affecting their user experience. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the present application is that most of the existing automobile seat slide rail motors on the market are brush motors, which are used in automobiles and are prone to generate a lot of noise, making users feel uncomfortable and affecting their user experience.

[0005] In order to solve the above problems, in order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a direct-current brushless slide rail motor and an automobile seat.

[0006] In a first aspect, the utility model discloses a direct-current brushless slide rail motor, which comprises an upper end cover, an upper end bearing, a lower end cover, a lower end bearing, a rotor assembly and a stator assembly. The two ends of the rotor assembly are connected to the upper end cover and the lower end cover respectively, and the stator assembly is arranged around the rotor assembly.

[0007] The upper end bearing is installed at the center position of the upper end cover, and the lower end bearing is installed at the center position of the lower end cover.

[0008] The rotor assembly comprises a rotor shaft and a rotor core, the rotor core is sleeved on the rotor shaft, the two ends of the rotor shaft are connected to the upper end bearing and the lower end bearing respectively, and the rotor core is arranged close to the upper end bearing or the lower end bearing.

[0009] The rotor core and the stator assembly are oppositely and misalignedly arranged, and any end of the rotor shaft is close to the upper end cover or the lower end cover.

[0010] Preferably, the upper end cover is provided with a first fixed jaw, and the upper end bearing is installed in the first fixed jaw.

[0011] The lower end cover is provided with a second fixed clamping jaw, and the lower end bearing is installed in the second fixed clamping jaw.

[0012] Preferably, the rotor assembly comprises a graphite gasket, a positioning ring and a silica gel gasket, the graphite gasket and the silica gel gasket are sleeved on the rotor shaft, and the positioning ring is in interference connection with the rotor shaft.

[0013] The positioning ring is close to the rotor core, the graphite gasket is close to the upper end cover or the lower end cover, and the silica gel gasket is arranged between the graphite gasket and the positioning ring.

[0014] Preferably, the stator assembly comprises a stator core and a winding coil, and the winding coil is connected with the stator core.

[0015] Preferably, the stator assembly comprises a wire holder arranged between the stator core and the winding coil.

[0016] Preferably, an outer peripheral shell is arranged on the outer periphery of the stator assembly, and the upper end cover and the lower end cover are arranged at two ends of the outer peripheral shell respectively.

[0017] The outer peripheral shell is in interference fit with the stator core.

[0018] Preferably, a circuit assembly is arranged in electrical connection with the stator assembly, and the circuit assembly is connected with the lower end cover.

[0019] Preferably, the circuit assembly comprises a Hall sensor and a temperature control switch, the Hall sensor is connected with the temperature control switch, and the Hall sensor is used for sensing the position of the rotor core.

[0020] Preferably, the circuit assembly comprises a connector connected with the winding coil and the temperature control switch respectively.

[0021] In the second aspect, the utility model discloses a kind of automobile seats, which comprises the direct-current brushless sliding rail motor described above.

[0022] The above technical solutions provided by the present application have the following advantages compared with the prior art:

[0023] The direct-current brushless slide rail motor and the automobile seat provided by the application are mentioned, the rotor core in the rotor assembly is arranged close to the upper end cover or the lower end cover, the rotor shaft is connected with the upper end bearing on the upper end cover and the lower end bearing of the lower end cover at both ends, the stator assembly is sleeved outside the rotor assembly, the rotor core is close to any one end of the rotor shaft, the rotor core is dislocated relative to the stator assembly, the rotor assembly generates an axial magnetic pull force, the rotor shaft moves towards one end, one end of the rotor assembly is in contact and friction with the upper end bearing or the lower end bearing, and the other end is in a suspended state and keeps a certain distance from the lower end bearing or the upper end bearing, the friction sound of one end of the rotor shaft is reduced by half, and the effect of noise reduction is achieved.

[0024] The automobile seat mentioned adopts the direct-current brushless slide rail motor, the rotor core in the motor is dislocated relative to the stator assembly, when the rotor assembly moves, an axial magnetic pull force is generated, the rotor shaft moves towards one end, one end of the rotor assembly is in contact and friction with the upper end bearing or the lower end bearing, and the other end is in a suspended state and keeps a certain distance from the lower end bearing or the upper end bearing, the friction sound of one end of the rotor shaft is reduced by half, and the effect of noise reduction is achieved, and the noise generated when the automobile seat moves is smaller. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principle of the present application.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without any creative labor under the premise of not paying any creative labor.

[0027] Figure 1 A structural schematic diagram of the direct-current brushless slide rail motor provided by the application is shown in the figure.

[0028] Figure 2 An exploded structural schematic diagram of the direct-current brushless slide rail motor provided by the application is shown in the figure. Figure One ;

[0029] Figure 3 A use state diagram of the direct-current brushless slide rail motor provided by the application is shown in the figure.

[0030] Figure 4 An exploded structural schematic diagram of the direct-current brushless slide rail motor provided by the application is shown in the figure. Figure Two ;

[0031] Figure 5 A zoomed-in schematic diagram of Q in the figure. Figure 4 A zoomed-in schematic diagram of Q in the figure.

[0032] Figure 6 An exploded structural schematic diagram of a rotor assembly of a direct-current brushless slide rail motor is provided in the present application;

[0033] Figure 7 An exploded structural schematic diagram of a stator assembly of a direct-current brushless slide rail motor is provided in the present application;

[0034] Figure 8 A connection structural schematic diagram of an upper end cover, a lower end cover, a rotor assembly and a stator assembly of a direct-current brushless slide rail motor is provided in the present application;

[0035] Figure 9 A connection structural schematic diagram of a lower end cover, a circuit assembly and a rotor assembly of a direct-current brushless slide rail motor is provided in the present application;

[0036] Figure 10 A circuit diagram of a circuit assembly of a direct-current brushless slide rail motor is provided in the present application.

[0037] Explanation of reference signs:

[0038] 1. A direct-current brushless slide rail motor;

[0039] 11. A rotor assembly; 111. A magnet; 112. A rotor shaft; 113. A rotor core; 114. A graphite gasket; 115. A positioning ring; 116. A silica gel gasket;

[0040] 12. A stator assembly; 121. A wire holder; 1211. A baffle; 122. A stator core; 123. A winding coil;

[0041] 13. An upper end cover; 131. A first fixed jaw; 132. A riveting interface;

[0042] 14. An upper end bearing; 141. An oil storage groove;

[0043] 15. A lower end cover; 151. A second fixed jaw;

[0044] 16. A lower end bearing;

[0045] 17. An outer peripheral shell; 171. A riveting structure;

[0046] 18. A circuit assembly; 181. A Hall sensor; 182. A temperature control switch; 183. A connector; 184. A PCB board. DETAILED DESCRIPTION

[0047] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0048] In a first aspect, referring to Figures 1-10 The utility model discloses a direct current brushless slide rail motor 1, including upper end cover 13, lower end cover 15, outer peripheral shell 17, rotor assembly 11, stator assembly 12, upper end cover 13 with lower end cover 15 set up at the both ends of outer peripheral shell 17, and the outer peripheral shell 17 is cylindrical shape, and the inside of outer peripheral shell 17 is hollow, and both ends are hollow too, and upper end cover 13 and lower end cover 15 are buckled in the both ends of outer peripheral shell 17, make the inside of outer peripheral shell 17 seal, and rotor assembly 11 and stator assembly 12 are set up in the outer peripheral shell 17, and the outer peripheral side of stator assembly 12 is set up in the outer peripheral shell 17, and the outer peripheral shell 17 is in interference fit with stator assembly 12.

[0049] The both ends of rotor assembly 11 are connected with upper end cover 13 and lower end cover 15, and penetrate through upper end cover 13 and lower end cover 15, and are exposed to the outside of outer peripheral shell 17, the stator assembly 12 is arranged around the rotor assembly 11, and the rotor assembly 11 rotates in the stator assembly 12.

[0050] Among them, the edge of the both ends of outer peripheral shell 17 is provided with riveting structure 171, and the edge of both upper end cover 13 and lower end cover 15 is provided with riveting interface 132, and the installation between outer peripheral shell 17 and upper end cover 13 and lower end cover 15 is realized through riveting structure 171 and riveting interface 132, which can improve the connection stability between upper end cover 13 and lower end cover 15, in addition, subsequent internal maintenance can be carried out by opening riveting structure 171 to maintain the interior, and product maintenance is more convenient.

[0051] Particularly, the outer peripheral shell 17 is formed by winding a thin plate into a cylindrical shell, and the junctions are combined by riveting and interlacing. The outer peripheral shell 17 has seven riveting interfaces 132 and one wire outlet. The outer peripheral shell 17 is made by the process method, which can make the motor installation structure more suitable and shaped.

[0052] The direct current brushless slide rail motor 1 includes an upper end bearing 14 and a lower end bearing 16. The upper end bearing 14 is installed at the center of the upper end cover 13, and the lower end bearing 16 is installed at the center of the lower end cover 15.

[0053] Specifically, the first fixed jaw 131 is arranged at the center of the upper end cover 13, the second fixed jaw 151 is arranged at the center of the lower end cover 15, the first fixed jaw 131 matches the shape of the upper end bearing 14, the second fixed jaw 151 matches the shape of the lower end bearing 16, the upper end bearing 14 is clamped on the first fixed jaw 131, and the lower end bearing 16 is clamped on the second fixed jaw 151, so that the upper end bearing 14 is fixed in the first fixed jaw 131, and the lower end bearing 16 is fixed in the second fixed jaw 151.

[0054] It can be understood that the clamping position of the first fixed jaw 131 and the second fixed jaw 151 is the bearing chamber, the upper end bearing 14 and the lower end bearing 16 are directly pressed into the bearing chamber of the upper end cover 13 or the lower end cover 15, and are held by the first fixed jaw 131 and the second fixed jaw 151, so that the upper end bearing 14 and the lower end bearing 16 can swing and center in the bearing chamber of the upper end cover 13 and the lower end cover 15, while the displacement of the upper end bearing 14 and the lower end bearing 16 is limited. Further, after the motor operates, the upper end bearing 14 and the lower end bearing 16 will be automatically adjusted to an axis under the action of the rotor shaft 112, so that the motor runs smoothly without interference.

[0055] The rotor assembly 11 includes a magnet 111, a rotor shaft 112 and a rotor core 113, the rotor core 113 is sleeved on the rotor shaft 112, the rotor shaft 112 is connected with the upper end bearing 14 and the lower end bearing 16 at both ends respectively, and the rotor core 113 is arranged close to the upper end bearing 14 or the lower end bearing 16, wherein the center of the upper end bearing 14 and the center of the upper end bearing 14 are provided with an opening, the shape and size of the opening match the both ends of the rotor shaft 112, the upper end bearing 14 and the lower end bearing 16 are pressed into the both ends of the rotor shaft 112, the rotor core 113 is arranged opposite to the stator assembly 12, and any one end of the rotor shaft 112 is close to the upper end cover 13 or the lower end cover 15. The magnet 111 adopts a cylindrical shape, the magnet 111 is sleeved outside the rotor core 113, and the magnet 111 is assembled with the rotor core 113 by structural glue.

[0056] Specifically, the rotor core 113 in the rotor assembly 11 is arranged close to the upper end cover 13 or the lower end cover 15, the rotor shaft 112 is connected with the upper end bearing 14 on the upper end cover 13 and the lower end bearing 16 of the lower end cover 15 at both ends, the stator assembly 12 is sleeved outside the rotor assembly 11, the rotor core 113 is arranged on the rotor shaft 112 close to either end of the rotor shaft 112, the rotor core 113 is misaligned relative to the stator assembly 12, the rotor assembly 11 generates an axial magnetic pull, the rotor shaft 112 moves towards one end, one end of the rotor assembly 11 is in contact and friction with the upper end bearing 14 or the lower end bearing 16, and the other end is in a suspended state and keeps a certain distance from the lower end bearing 16 or the upper end bearing 14, so that the friction sound of one end of the rotor shaft 112 is reduced by half, and the effect of noise reduction is achieved.

[0057] The rotor assembly 11 comprises a graphite gasket 114, a positioning ring 115 and a silica gel gasket 116, the graphite gasket 114, the silica gel gasket 116 and the positioning ring 115 are sleeved on the rotor shaft 112, the positioning ring 115 is connected with the rotor shaft 112 in an interference fit, the positioning ring 115 is close to the rotor core 113, the graphite gasket 114 is close to the upper end cover 13 or the lower end cover 15, and the silica gel gasket 116 is arranged between the graphite gasket 114 and the positioning ring 115.

[0058] Specifically, the graphite gasket 114, the positioning ring 115 and the silica gel gasket 116 are arranged at both ends of the rotor shaft 112, under the action of the axial magnetic pull, the rotor shaft 112 moves towards one end, the positioning ring 115 moves together with the rotor shaft 112, and the positioning ring 115 moves close to the upper end bearing 14 or the lower end bearing 16, the rotor shaft 112 moves towards the upper end bearing 14 or the lower end bearing 16 after the rotor core 113 is subjected to the axial magnetic pull, and the rotor shaft 112 moves relative to the upper end bearing 14 or the lower end bearing 16, when the rotor shaft 112 moves close to the upper end cover 13 or the lower end cover 15, the positioning ring 115 is fixed on the rotor shaft 112, the graphite gasket 114 at one end continuously abuts against the surface of the upper end bearing 14 or the lower end bearing 16 under the action of the positioning ring 115, the two relative rotation and friction generate noise, the graphite gasket 114 at the other end is far away from the bearing and is in a suspended state, the two cannot generate noise by friction, and the purpose of reducing noise is achieved. In addition, the graphite gasket 114 and the silica gel gasket 116 are arranged between the positioning ring 115 and the rotor bearing, the silica gel gasket 116 can absorb the axial vibration of the rotor shaft 112, the axial vibration is generated by the periodic vibration of the rotor assembly 11 under the action of the magnetic field force, the silica gel gasket 116 can weaken the noise transmitted by the rotor assembly 11, and the overall noise of the motor is reduced.

[0059] It can be understood that, due to the movement of the rotor shaft 112 to one end, the graphite pad 114 at one end is in contact and friction with the upper end bearing 14 or the lower end bearing 16, and the graphite pad 114 at the other end is away from the upper end bearing 14 or the lower end bearing 16, reducing the friction sound by half, and the silica gel pad 116 on the graphite pad 114 can further eliminate the periodic vibration of the rotor assembly 11 caused by the magnetic field force, so as to block the noise transmission path and meet the low noise requirement.

[0060] In this embodiment, the rotor core 113 is arranged close to the lower end cover 15, so that the stator assembly 12 and the rotor assembly 11 are mutually misaligned, and the rotor assembly 11 generates an axial magnetic pull close to the lower end cover 15, so that the rotor assembly 11 moves towards the direction of the lower end cover 15.

[0061] In particular, the upper end bearing 14 and the lower end bearing 16 are provided with an oil storage groove 141, and during installation, lubricating oil or grease needs to be applied in the oil storage groove 141, so that the upper end bearing 14 or the lower end bearing 16 rotates more smoothly relative to the graphite pad 114, which can reduce the friction sound when the upper end bearing 14 and the lower end bearing 16 rotate relative to the graphite pad 114, thereby reducing the noise emission, and at the same time, the service life of the graphite pad 114, the upper end bearing 14 and the lower end bearing 16 can be prolonged.

[0062] The stator assembly 12 comprises a bobbin 121, a stator core 122 and a winding coil 123, the winding coil 123 is connected with the stator core 122, and the bobbin 121 is arranged between the stator core 122 and the winding coil 123.

[0063] Specifically, the stator core 122 is integrally formed and internally provided with spokes in a radial manner, the number of winding coils 123 is matched with the number of spokes at the center of the stator core 122, in addition, the bobbin 121 is divided into two parts, and the upper and lower regions of the positioning core are hollow. Since the end of the spoke of the positioning core is provided in a sheet shape, the single bobbin 121 cannot be installed from one end of the positioning core, and the positioning core needs to be divided into two parts. The two parts of the bobbin 121 are inserted from the upper and lower positions of the positioning core and installed in the positioning core. After the bobbin 121 is installed on the positioning core, the winding is performed on the spokes on which the bobbin 121 is installed, to form the winding coil 123. After the stator core 122 is inserted into the bobbin 121, the winding is completed. Finally, after the bobbin 121 is installed and the winding is processed, the stator core 122 is press-fitted onto the outer peripheral shell 17 by using glue or through interference fit.

[0064] The direct-current brushless slide rail motor 1 comprises a circuit assembly 18, the circuit assembly 18 is electrically connected with the stator assembly 12, and the circuit assembly 18 is connected with the lower end cover 15.

[0065] Specifically, the circuit assembly 18 is mounted on the lower end cover 15, the circuit assembly 18 is arranged between the stator assembly 12 and the lower end cover 15, the outer peripheral shell 17 is sleeved outside the stator assembly 12 and the circuit assembly 18, the circuit assembly 18 is in communication with the stator assembly 12, and the circuit assembly 18 supplies power for the winding coil 123.

[0066] The circuit assembly 18 comprises a Hall sensor 181, a temperature control switch 182 and a connector 183, the Hall sensor 181 is connected with the temperature control switch 182, the Hall sensor 181 is used for sensing the position of the rotor iron core 113, and the connector 183 is connected with the winding coil 123 and the temperature control switch 182 respectively.

[0067] Specifically, the connector 183, the temperature control switch 182 and the Hall sensor 181 are integrated on a PCB board 184, the connector 183 is used for connecting an external power supply, the temperature control switch 182 and the Hall sensor 181 are connected in series, the temperature control switch 182 is used for sensing the internal temperature of the motor, and when the protection temperature is reached, the power supply of the Hall sensor 181 is disconnected, so that the Hall sensor 181 has the function of over-temperature protection. The connector 183 connects the external power supply, accesses a three-phase power supply with large current and a small-current power supply, the small-current power supply supplies power for the Hall sensor 181, the three-phase power supply with large current is in communication with the winding coil 123, and the temperature control switch 182 is a small-current temperature protector, the temperature control switch 182 has small size and high sensitivity, and can be arranged in the motor more conveniently.

[0068] In addition, the PCB board 184 integrated with the connector 183, the temperature control switch 182, the Hall sensor 181 and other electronic elements is fixed on the stator assembly 12 through a positioning groove on the wire holder 121, three-phase wires are welded after that, the wire holder 121 extends a baffle 1211 and abuts on the PCB board, and meanwhile, the baffle 1211 insulates the PCB board from the outer peripheral shell 17. The connector 183 on the PCB board 184 replaces the lead-out wire, improves production efficiency, further meets the automobile safety requirement, and improves reliability.

[0069] In the embodiment, three Hall sensors 181 are arranged, the motor senses the position of the magnet 111 through the three Hall sensors 181, and feedback driving is realized.

[0070] In the second aspect, the utility model discloses a kind of automobile seats, which include the direct current brushless slide rail motor 1 described above.

[0071] Specifically, the direct-current brushless slide rail motor 1 is adopted, the rotor core 113 in the motor is designed to be misaligned relative to the stator assembly 12, when the rotor assembly 11 generates an axial magnetic pull force, the rotor shaft 112 moves to one end, the one end of the rotor assembly 11 is in contact and friction with the upper end bearing 14 or the lower end bearing 16, and the other end is in a suspended state and keeps a certain distance from the lower end bearing 16 or the upper end bearing 14, so that the friction sound of one end of the rotor shaft 112 is reduced by half, the noise of the automobile seat during operation is smaller, and a more quiet driving environment is created for the user.

[0072] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0073] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0074] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0075] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0076] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "on", "above" and "on top of" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "underneath" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0077] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0078] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, these modifications and variations of the present application are intended to be included within the scope of the claims of the present application and their equivalents. The present application is intended to include these modifications and variations.

[0079] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A brushless DC slide rail motor, characterized by, The motor comprises an upper end cover, an upper end bearing, a lower end cover, a lower end bearing, a rotor assembly and a stator assembly, the rotor assembly is connected with the upper end cover and the lower end cover respectively, and the stator assembly is arranged around the rotor assembly; The upper end bearing is arranged at the center of the upper end cover, and the lower end bearing is arranged at the center of the lower end cover; The rotor assembly comprises a rotor shaft and a rotor core, the rotor core is sleeved on the rotor shaft, the rotor shaft is connected with the upper end bearing and the lower end bearing respectively, and the rotor core is arranged close to the upper end bearing or the lower end bearing; The rotor core is arranged in opposite dislocation with the stator assembly, and any end of the rotor shaft is close to the upper end cover or the lower end cover.

2. The brushless DC slide rail motor according to claim 1, characterized in that, The upper end cover is provided with a first fixing claw, and the upper end bearing is arranged in the first fixing claw; The lower end cover is provided with a second fixing claw, and the lower end bearing is arranged in the second fixing claw.

3. The brushless DC slide rail motor of claim 1, wherein, The rotor assembly comprises a graphite gasket, a positioning ring and a silica gel gasket, the graphite gasket, the silica gel gasket and the positioning ring are sleeved on the rotor shaft, and the positioning ring is connected with the rotor shaft in interference fit; The positioning ring is close to the rotor core, the graphite gasket is close to the upper end cover or the lower end cover, and the silica gel gasket is arranged between the graphite gasket and the positioning ring.

4. The brushless DC slide rail motor of claim 1, wherein, The stator assembly comprises a stator core and a winding coil, and the winding coil is connected with the stator core.

5. The brushless DC slide rail motor of claim 4, wherein, The stator assembly comprises a wire holder, and the wire holder is arranged between the stator core and the winding coil.

6. The brushless DC slide rail motor of claim 3, wherein, The motor comprises an outer peripheral shell, the outer peripheral shell is arranged at the outer peripheral side of the stator assembly, the upper end cover and the lower end cover are arranged at two ends of the outer peripheral shell respectively; The outer peripheral shell is connected with the stator assembly in interference fit.

7. The brushless DC slide rail motor of claim 1, wherein, The motor comprises a circuit assembly, the circuit assembly is electrically connected with the stator assembly, and the circuit assembly is connected with the lower end cover.

8. The brushless DC slide rail motor of claim 7, wherein, The circuit assembly comprises a Hall sensor and a temperature control switch, the Hall sensor is connected with the temperature control switch, and the Hall sensor is used for sensing the position of the rotor core.

9. The brushless DC slide rail motor of claim 7, wherein, The circuit assembly comprises a connector, and the connector is connected with the winding coil and the temperature control switch respectively.

10. An automobile seat characterized by comprising: The motor comprises the DC brushless slide rail motor according to any one of claims 1-9.

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