Motor

Abstract

The present invention may provide a motor including: a shaft; a rotor coupled to the shaft; a stator positioned corresponding to the rotor; a lock portion provided on one side of the shaft and restricting rotation of the shaft when necessary; a housing for accommodating the stator; and a terminal portion provided above the stator. The motor also includes a lead wire for connecting the lock portion to the terminal portion. The lead wire is disposed along a space between the lock portion and the housing and along a space between the stator and the housing, and is connected to the terminal portion.

Description

Technical Field

[0001] This invention relates to motors. Background Technology

[0002] Electronic braking systems in vehicles use motors and reducers to brake the vehicle, and are lighter, more sensitive, and require less installation space than mechanical braking systems. Additionally, electric parking brakes are devices that automatically operate using actuators based on the vehicle's operating status, even when the driver is not manually operating the vehicle.

[0003] Such an electric parking brake can be configured such that the brake shoes in the wheel drum brake (DIH) are extended by the tension generated by pulling the parking cable through the rotation of the motor to ensure braking force, or the main shaft moves the piston forward through the rotation of the motor to make the disc and pad in close contact to ensure braking force.

[0004] In order to realize the function of the electric parking brake, the structure of the electric parking brake should be added to the electronic braking system. Therefore, the problem is that it requires a large installation space and the structure of related components such as the reducer is complex. Summary of the Invention

[0005] [Technical Issues]

[0006] Therefore, the present invention aims to solve the above-mentioned problems and to provide a motor in which a parking brake function is added to an electronic braking system to simplify the structure of the entire braking system.

[0007] The objectives of this invention are not limited to those described above, and those skilled in the art can clearly understand other objectives not described above through the following description.

[0008] [Technical Solution]

[0009] One embodiment provides a motor comprising: a shaft; a rotor connected to the shaft; a stator configured to correspond to the rotor; a locking portion disposed on one side of the shaft and restricting rotation of the shaft as needed; a housing housing the stator; a terminal portion disposed on the stator; and wires connecting the locking portion and the terminal portion, wherein the wires are disposed along the space between the locking portion and the housing and the space between the stator and the housing, and connected to the terminal portion.

[0010] The motor may include a plate disposed in the housing, wherein the plate may contact a locking part such that the housing and the locking part form a space by being spaced apart from each other in the axial direction of the shaft, and a wire may be disposed in the space.

[0011] A portion of the shaft and a portion of the locking part may overlap in both the axial and radial directions.

[0012] The locking part may include a stop that moves axially and contacts the shaft, preventing the shaft from rotating.

[0013] The plate may include: a plate body that contacts a locking part; and a leg that extends from the plate body and contacts a housing, wherein the body may be spaced apart from the housing.

[0014] The housing may include a groove disposed in its inner circumferential surface; and a portion of the wire may be disposed in the groove.

[0015] The housing may include: a housing portion; and a first cover, the first cover being connected to the housing portion, wherein the groove portion may include a first groove and a second groove communicating with each other, the first groove may be disposed in the first cover, and the second groove may be disposed in the housing portion.

[0016] The motor may also include a wire retainer, wherein the wire retainer may be disposed in a second slot and the wire may be disposed in the wire retainer.

[0017] The motor may also include a mold portion disposed on the stator, wherein the terminal portion may include a first terminal and a second terminal connected to each other, the first terminal may be disposed on the mold portion, and the second terminal may be disposed on a wire holder and connected to a wire located in the wire holder.

[0018] A portion of the wire retainer and the mold portion can be configured to overlap in the radial direction.

[0019] [Beneficial Effects]

[0020] According to one embodiment of the present invention, since the parking brake function is added to the electronic braking system, it has the benefit of simplifying the structure of the entire braking system.

[0021] According to one embodiment of the invention, since the motor shaft of the electric parking system is directly restricted, there is no need to provide a separate parking brake, thus having the benefit of reducing installation space and the number of parts.

[0022] According to one embodiment of the invention, since the stop is configured to overlap with the shaft in the axial direction, it has the advantage of minimizing the size of the components used to implement the parking brake function.

[0023] According to one embodiment of the invention, since the wires connected to the locking part are disposed in the housing and not exposed to the outside of the housing, there is a benefit of substantially preventing leakage problems due to the wires being exposed to the outside. Attached Figure Description

[0024] Figure 1 This is a view showing a motor according to an embodiment.

[0025] Figure 2 yes Figure 1 The motor shown is a side view.

[0026] Figure 3 This is an exploded view of the locking mechanism.

[0027] Figure 4 This is a side sectional view of the locking part.

[0028] Figure 5 This is a view showing the shaft and locking mechanism.

[0029] Figure 6 This is a view showing the first part of the stop and the second column.

[0030] Figure 7 A view illustrating the state of the stop moving when current is applied to the locking part is shown.

[0031] Figure 8 This is a view showing the state in which the shaft is restricted by the locking mechanism.

[0032] Figure 9 This is a view showing the locking part, terminal part, wires, and plate.

[0033] Figure 10 This is a view showing the housing portion of the housing.

[0034] Figure 11 This is a view showing the first cover of the housing.

[0035] Figure 12 This is a view showing the assembled processor with the locking mechanism.

[0036] Figure 13 This is a perspective view showing the plate.

[0037] Figure 14 This is a view showing the locking mechanism in the housing.

[0038] Figure 15 This is a side view showing the arrangement of the conductors.

[0039] Figure 16 This is a view showing the mold part.

[0040] Figure 17 This is an enlarged view showing the connection of the wires and terminals. Detailed Implementation

[0041] In the following, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0042] However, the technical spirit of the present invention is not limited to the embodiments to be described, but can be implemented in various different forms, and one or more components of the embodiments can be selectively combined, substituted and used within the scope of the technical spirit of the present invention.

[0043] Furthermore, unless otherwise clearly and specifically defined by the context, all terms used herein (including technical and scientific terms) are to be interpreted as having the meaning commonly understood by those skilled in the art, and the meaning of commonly used terms, such as those defined in common dictionaries, will be interpreted in light of the contextual meaning of the relevant art.

[0044] Furthermore, the terminology used in the embodiments of the present invention is for descriptive purposes only and is not intended to limit the invention.

[0045] In this specification, unless the context clearly indicates otherwise, the singular form includes the plural form, and in the case of describing “at least one (or one or more) of A, B and C”, this may include at least one combination of all possible combinations of A, B and C.

[0046] Furthermore, in the description of the components of the present invention, terms such as "first", "second", "A", "B", "(a)" and "(b)" may be used.

[0047] These terms are used only to distinguish one component from another, and the nature, order, etc., of the components are not limited by these terms.

[0048] Additionally, it should be understood that when a component is referred to as “connected,” “linked,” or “coupled” to another component, such a description can include both cases where a component is directly connected, linked, or linked to another component and cases where a component is connected, linked, or linked to another component through another component positioned between the two components.

[0049] Additionally, when the first component is described as being formed or disposed "above" or "below" the second component, such a description includes both the case where the two components are formed or disposed in direct contact with each other and the case where one or more other components are located between the two components. Furthermore, when the first component is described as being formed "above" or "below" the second component, such a description can include the case where the first component is formed on the upper or lower side relative to the second component.

[0050] Figure 1 This is a view showing a motor according to an embodiment, and Figure 2 yes Figure 1 The motor shown is a side view.

[0051] Reference Figure 1 and Figure 2 According to the embodiments, the motor may include a shaft 100, a rotor 200, a stator 300, a locking part 400, a housing 500, a terminal part 600, a wire 700, a plate 800, a wire holder 900, and a mold part 1000.

[0052] In the following text, the term "inward" refers to the direction toward shaft 100 in the radial direction of the motor, and the term "outward" refers to the opposite direction to "inward". Furthermore, in the following text, the circumferential and radial directions are defined based on the motor's shaft center.

[0053] In the following text, in addition to the braking function, the motor also has a parking brake function.

[0054] Shaft 100 can be rotatably supported in the axial direction by bearings. In shaft 100, portions with different outer diameters can be separated and arranged in the axial direction.

[0055] The rotor 200 rotates by electromagnetic interaction with the stator 300. The rotor 200 may include magnets disposed on the outer peripheral surface of the shaft 100.

[0056] The stator 300 is disposed outside the rotor 200. The stator 300 may include a stator core 310, an insulator 320, and a coil 330. The insulator 320 is mounted on the stator core 310. The coil 330 may be wound around the insulator 320. The insulator 320 is disposed between the coil 330 and the stator core 310, and electrically insulates the stator core 310 from the coil 330. The coil 330 induces an electromagnetic interaction with the magnet 220 of the rotor 200.

[0057] A locking part 400 is provided in the shaft 100. The locking part 400 is a device that performs a braking function by preventing the shaft 100 from rotating when the vehicle is stopped and a signal is applied to the locking part 400. The locking part 400 is connected to the terminal part 600.

[0058] The housing 500 is located outside the stator 300.

[0059] The terminal section 600 transmits power or control signals to the locking section 400. The terminal section 600 includes a first terminal 610 and a second terminal 620. The first terminal 610 is connected to a wire 700, and the second terminal 620 is connected to the first terminal 610. In addition, the second terminal 620 is connected to an external power source.

[0060] The wire 700 is connected to the locking part 400. Furthermore, the wire 700 (see...) Figure 14 Connect to the first terminal 610. Wire 700 (see...) Figure 14It can be set in the housing 500.

[0061] Plate 800 is disposed below locking part 400. Plate 800 is fixed to housing 500. Locking part 400 can be fixed to plate 800.

[0062] The wire retainer 900 accommodates the wire 700. The wire retainer 900 can be secured to the housing 500.

[0063] The mold section 1000 can be provided on the stator 200. Alternatively, the mold section 1000 can be provided on the outside of the busbar B.

[0064] Figure 3 It is an exploded view of the locking part 400, and Figure 4 This is a side sectional view of the locking part 400.

[0065] Reference Figure 3 and Figure 4 The locking part 400 may include a stop 410, a housing 420, a second column 450, a second coil 470, and a second elastic member 490.

[0066] The stop 410 may include a first portion 411 and a second portion 412. The first portion 411 is stacked on top of the second portion 412 in the axial direction. The first portion 411 is configured to move in conjunction with the movement of the second portion 412 when the second portion 412 moves. The first portion 411 includes a protrusion P. The second portion 412 electromagnetically interacts with the second coil 470 to move linearly along the inside of the second column 450.

[0067] The housing 420 may be a cylindrical member having a receiving space therein. The housing 420 may include a cover 451 that covers the open upper portion.

[0068] The second column 450 is disposed in the outer casing 420.

[0069] The second coil 470 can be disposed on one side of the second column 450 within the housing 420. The second coil 470 can be connected to the spool 470. The spool 470 is disposed on one side of the second column 450. The second coil 470 is connected to an external connector.

[0070] The second elastic member 490 is disposed axially between the inner wall of the housing 420 and the first portion 411. The second elastic member 490 may be a helical spring that has a restoring force when contracted. The first portion 411 is spaced apart from the shaft 100 due to the restoring force of the second elastic member 490.

[0071] Figure 5 This is a view showing shaft 100 and locking part 400.

[0072] Reference Figure 4 and Figure 5 The first part 411 may include a protrusion P.

[0073] As the stop 410 of the locking part 400 moves in the axial direction, the protrusion P is inserted into the groove G3 of the shaft 100, thereby the shaft 100 is restricted by the stop 410 and does not rotate.

[0074] Figure 6 This is a view showing the first part 411 of the stop 410 and the second column 450.

[0075] Reference Figure 5 and Figure 6 The first portion 411 may include a cylindrical body portion 411a and a plurality of wings 411b protruding from the outer circumferential surface of the body portion 411a. A second elastic member 490 is seated on one side surface of the wings 411b. Each of the wings 411b may include a first surface 411c disposed on another side surface. The first surface 411c is a surface in contact with a second surface 451 disposed on one end of the second column 450 or on one side surface of the second portion 412. The first surface 411c may be formed at an angle.

[0076] The second column 450 may include a cylindrical body portion 450a and a plurality of columns 450b protruding from the cylindrical body portion 450a. A gap X is formed such that the plurality of columns 450b are spaced apart from each other by a predetermined distance. Each of the columns 450b includes a second surface 451. The second surface 451 may be inclined corresponding to the first surface 411c and is formed to form a step ST.

[0077] Figure 7 A view is shown illustrating the state in which the stop 410 moves when current is applied to the locking part 400.

[0078] like Figure 7 As shown in (a), when the vehicle is moving or stopped and there is no additional signal, no power is applied to the second coil 470, and the protrusion P is positioned spaced apart from the slot G3 due to the restoring force of the second elastic member 490. The shaft 100 is not restricted by the stop 410 and rotates due to the electromagnetic interaction between the rotor 200 and the stator 300.

[0079] like Figure 7As shown in (b), when the vehicle is parked and a signal is associated with the parking brake to apply power to the second coil 470, the second portion 412 of the stop 410 moves linearly along the second column 450 due to the electromagnetic interaction between the second coil 470 and the stop 410. The second portion 412 of the stop 410 overcomes the restoring force of the second elastic member 490 and moves linearly toward the shaft 100. When the second portion 412 moves, the first portion 411 moves toward the shaft 100 through the second portion 412 while one side surface of the second portion 412 is in contact with the first surface 411c of the first portion 411. In this case, since the surface of the second portion 412 that contacts the first surface 411c of the first portion 411 is inclined, the first portion 411 moves toward the shaft 100 while rotating. In addition, with the groove G3 aligned with the protrusion P, the protrusion P is inserted into the groove G3 of the shaft 100.

[0080] In this case, the first surface 411c of the first part 411 is aligned with the step ST of the second column 450.

[0081] Figure 8 This is a view showing the state in which shaft 100 is restricted by locking part 400.

[0082] Reference Figure 8 When no current is supplied to the second coil 470, the second portion 412 moves away from the shaft 100, and the first portion 411 moves due to the restoring force of the second elastic member 490. Therefore, the first surface 411c of the first portion 411 is caught by the step ST of the second column 450. Since the second column 450 is fixed, the first portion 411 is restricted in the rotational direction by the second column 450. Thus, with the protrusion P2 inserted into the slot G3, the shaft 100 is restricted by the first portion 411, thereby performing the parking brake function.

[0083] Since the first part 411 of the locking part 400 is locked onto the step ST, rotation of the shaft 100 is prevented even when no current is supplied to the second coil 470. Therefore, it is not necessary to continuously supply power to the locking part 400 to perform the parking brake function.

[0084] When the restriction on shaft 100 is lifted and current is applied to the second coil 470 again, the second portion 412 of the stop 410 overcomes the restoring force of the second elastic member 490, moves linearly toward shaft 100, and lifts the first portion 411, causing the first portion 411 to space away from the second column 450. In this case, the first portion 411 rotates, causing the wing 411b of the first portion 411 to align with the gap X of the second column 450. Furthermore, when the current applied to the second coil 470 stops, the first portion 411 moves downward, the protrusion P emerges from the slot G3, and the stop 410 separates from shaft 100, thereby releasing the restriction on shaft 100.

[0085] Figure 9 This is a view showing the locking part 400, the terminal part 600, the wire 700, and the plate 800.

[0086] Reference Figure 9 The locking part 400 is fixed to the housing 500. For example, the locking part 400 can be fixed to the first cover 520 of the housing 500 via a plate 800. The plate 800 is connected to the first cover 520. The outer casing 420 of the locking part 400 can be fixed to the plate 800.

[0087] The locking part 400 is connected to the wire 700. The locking part 400 can receive power and send or receive control signals through the wire 700. Since the wire 700 is connected to the bottom of the locking part 400, space is required between the housing 420 of the locking part 400 and the first cover 510 for the wire 700. A portion of the plate 800 is spaced apart from the first cover 510 to ensure space for the wire 700.

[0088] The wire 700 is guided along the first cover 510 and secured in the axial direction by the wire retainer 900. The wire retainer 900 is disposed in the axial direction. The wire retainer 900 may be disposed on the edge of the first cover 510. The wire retainer 900 may be an injection-molded molded part.

[0089] The second terminal 620 of the terminal section 600 can be connected to the end of the wire 700.

[0090] Figure 10 This is a view showing the housing body 510 of the housing 500, and Figure 11 This is a view showing the first cover 520 of the housing 500.

[0091] Reference Figure 1 , Figure 10 and Figure 11The housing 500 may include a housing body 510, a first cover 520, and a second cover 530. The housing body 510 may be a cylindrical member having an opening on one side and an opening on the other side. The first cover 520 is attached to one side of the housing body 510 and covers one opening side of the housing body 510. The second cover 530 is attached to the other side of the housing body 510 and covers the other opening side of the housing body 510.

[0092] The housing 500 may include a groove G. The groove G is used to receive the wire 700. The groove G may include a first groove G1 and a second groove G2. The first groove G1 is disposed in the first cover 520. The first groove G1 may be disposed at the edge of the first cover 520. The first groove G1 is aligned with the wire holder 900. The second groove G2 is disposed in the housing body 510. The second groove G2 may be recessed in the housing body 510. The second groove G2 may be configured to extend in the axial direction.

[0093] The wire retainer 900 is located in the second slot G2.

[0094] Figure 12 This is a view showing the assembled processor with locking section 400.

[0095] Reference Figure 12 The locking part 400 is connected to the first cover 520. Additionally, the wire retainer 900 is connected to the first cover 520. The wire 700 is secured by the wire retainer 900.

[0096] The stator 300 is disposed in the housing body portion 510. The busbar B can be fixed to the stator 300. With the locking part 400, the wire holder 900 and the wire 700 fixed to the first cover 520, the first cover 520 can be assembled to the housing body portion 510.

[0097] Figure 13 This is a perspective view showing plate 800. Figure 14 This is a view showing the locking part 400 installed in the housing 500, and Figure 15 This is a side view showing the arrangement of conductor 700.

[0098] Reference Figure 13 and Figure 15 The plate 800 may include a plate body portion 810 and legs 820. Two legs 820 may be connected to both ends of the plate body portion 810. The plate body portion 810 contacts the housing 420 of the locking portion 400. The plate body portion 810 is configured to be spaced apart from the first cover 520. This is to ensure space SP for the wire 700 below the locking portion 400.

[0099] The plate portion 810 may have a circular shape. The hole 810a may be provided in the center portion of the plate portion 810.

[0100] Each of the legs 820 is connected to the first cover 520. The legs 820 may include curved areas that are connected to the plate portion 810 due to the height difference with the plate portion 810.

[0101] The wire 700 connected to the locking part 400 is guided to the space SP secured by the plate 800, and then guided along the bottom of the first cover 520 to the edge of the first cover 520. The wire 700 guided to the edge of the first cover 520 is accommodated in the wire holder 900 and guided in the axial direction.

[0102] The second terminal 620 of the terminal section 600 is connected to the end of the wire 700.

[0103] Figure 16 This is a view showing the mold section 1000, and Figure 17 This is an enlarged view showing the connection between the wire 700 and the terminal portion 600.

[0104] Reference Figure 15 and Figure 16 The mold part 1000 can be provided on the stator 300. The mold part 1000 can be an annular member. The mold part 1000 can be provided outside the busbar B.

[0105] A first terminal 610 of the terminal portion 600 is provided on the mold portion 1000. The first terminal 610 may be configured to extend in the axial direction. The first terminal 610 is connected to an external power source.

[0106] The second terminal 620 is connected to the wire 700. The second terminal 620 can be a flexible shunt wire. The second terminal 620 can be connected to the first terminal 610 on the mold section 1000. The second terminal 620 can be bent toward the first terminal 610 and connected to the first terminal 610.

[0107] As described above, when the wire 700 connected to the locking part 400 is connected to an external power source via the first terminal 610 and the second terminal 620 without being exposed to the outside of the housing 500, leakage problems that may occur due to the wire 700 being exposed to the outside and assembled with other components can be substantially prevented.

[0108] A motor according to an exemplary embodiment of the present invention has been described above with reference to the accompanying drawings.

[0109] The above embodiments should be considered descriptive only and not for limiting purposes, and the scope of the invention is defined not by the detailed description but by the appended claims. Furthermore, it should be understood that the scope of the invention covers all modifications and variations derived from the meaning and scope of the appended claims and their equivalents.

Claims

1. A motor, comprising: axis; Rotor, the rotor being connected to the shaft; A stator, wherein the stator is configured to correspond to the rotor; A locking part is disposed on one side of the shaft and configured to restrict the rotation of the shaft; Housing, the housing housing the stator; Terminal portion, the terminal portion being disposed on the stator; as well as A wire, which connects the locking part and the terminal part, The wire is arranged along the space between the locking part and the housing and the space between the stator and the housing, and is connected to the terminal part.

2. The motor according to claim 1, comprising a plate disposed within the housing. in, The plate contacts the locking part, such that the housing and the locking part form a space by being spaced apart from each other in the axial direction of the shaft, and The conductor is disposed in the space.

3. The motor according to claim 1, wherein, A portion of the shaft overlaps with a portion of the locking part in both the axial and radial directions.

4. The motor according to claim 1, wherein, The locking part includes a stop that moves axially and contacts the shaft, preventing the shaft from rotating.

5. The motor according to claim 1, wherein, The plate includes: The plate body portion, which contacts the locking portion; and Legs that extend from the plate portion and contact the housing. The body portion is configured to be spaced apart from the housing.

6. The motor according to claim 1, wherein: The housing includes a groove provided in its inner circumferential surface; and A portion of the wire is disposed in the groove.

7. The motor according to claim 6, wherein, The housing includes: The housing part; and A first cover, which is attached to the housing portion. The groove portion includes a first groove and a second groove that are interconnected. The first slot is disposed in the first cover, and The second groove is disposed in the housing portion.

8. The motor according to claim 7, further comprising a wire retainer, in, The wire retainer is disposed in the second slot, and The conductor is disposed in the conductor retainer.

9. The motor according to claim 8, further comprising a mold portion disposed on the stator, in, The terminal section includes a first terminal and a second terminal that are connected to each other. The first terminal is disposed on the mold portion, and The second terminal is disposed on the wire holder and connected to the wire located in the wire holder.

10. The motor according to claim 9, wherein, A portion of the wire retainer and the mold portion are arranged to overlap in the radial direction.

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