Electromagnetic actuator, vehicle lock and vehicle

Abstract

The utility model relates to the technical field of electromagnets, in particular to an electromagnetic actuator, a vehicle lock and a vehicle, the electromagnetic actuator comprises a shell, a driving assembly and a moving assembly, and the driving assembly comprises a magnetizer, a first permanent magnet, a first electromagnetic coil and a second electromagnetic coil; the magnetizer and the first permanent magnet are arranged in the shell and are arranged at intervals in the extending direction of the shell, the magnetizer is sleeved with the first electromagnetic coil, the first permanent magnet is sleeved with the second electromagnetic coil, and the first electromagnetic coil and the second electromagnetic coil are reversely connected in series; the second permanent magnet is arranged between the magnetizer and the first permanent magnet, and the second permanent magnet can move relative to the driving assembly in the extending direction of the shell, and the reliability of the electromagnetic actuator can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnets, and in particular to an electromagnetic actuator, a vehicle lock and a vehicle. Background Art

[0002] Electromagnetic actuators use the magnetic field force generated by electromagnets to drive the actuator by attracting or repelling the magnetic field force. Electromagnetic actuators in related technologies often use springs to push the iron core back to its initial position when the electromagnetic coil is powered off. To maintain the iron core in the current position, a holding current needs to be supplied to the electromagnetic coil, which reduces the reliability of the electromagnetic actuator. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the utility model proposes an electromagnetic actuator, which can improve the reliability of the electromagnetic actuator.

[0004] The embodiment of the utility model also provides a vehicle lock.

[0005] The embodiment of the utility model also provides a vehicle.

[0006] The electromagnetic actuator of an embodiment of the utility model includes: a shell; a driving component, the driving component includes a magnetizer, a first permanent magnet, a first electromagnetic coil and a second electromagnetic coil, the magnetizer and the first permanent magnet are arranged in the shell and are spaced apart in the extension direction of the shell, the first electromagnetic coil is sleeved on the magnetizer, the second electromagnetic coil is sleeved on the first permanent magnet, and the first electromagnetic coil and the second electromagnetic coil are reversely connected in series; a moving component, the moving component includes a second permanent magnet, the second permanent magnet is arranged between the magnetizer and the first permanent magnet, and the second permanent magnet is movable relative to the driving component along the extension direction of the shell.

[0007] The electromagnetic actuator of the embodiment of the utility model can improve the reliability of the electromagnetic actuator.

[0008] In some embodiments, the moving assembly further includes a push rod extending along an extension direction of the shell, one end of the push rod extending into the shell and connected to an end of the second permanent magnet close to the first permanent magnet.

[0009] In some embodiments, the first permanent magnet is an annular permanent magnet, the first permanent magnet is sleeved on the push rod, the push rod is coaxially arranged with the first permanent magnet, and the push rod can move along the axial direction of the push rod relative to the first permanent magnet.

[0010] In some embodiments, on a projection plane parallel to the extension direction and the width direction of the shell, the outer contour of the magnetic conductor is a rectangle, and the axis of the rectangle coincides with the axis of the push rod.

[0011] In some embodiments, at least one of the first electromagnetic coil and the second electromagnetic coil is a toroidal electromagnetic coil.

[0012] In some embodiments, the push rod has an extended position, in which the first electromagnetic coil and the second electromagnetic coil are energized to establish a first magnetic field, the second permanent magnet is attracted to the first permanent magnet, and the second permanent magnet repels the magnetic conductor.

[0013] In some embodiments, the push rod has a retracted position, in which the first electromagnetic coil and the second electromagnetic coil are energized to establish a second magnetic field, the second permanent magnet repels the first permanent magnet, and the second permanent magnet attracts the magnetic conductor.

[0014] In some embodiments, the attraction between the second permanent magnet and the first permanent magnet is greater than the attraction between the second permanent magnet and the magnetic conductor.

[0015] The vehicle lock of an embodiment of the utility model includes: a vehicle lock body, which is suitable for being installed on a vehicle door; an electromagnetic actuator, which is installed inside the vehicle lock body and connected to the vehicle lock body, and is used to control the locking and unlocking of the vehicle lock body. The electromagnetic actuator is the electromagnetic actuator described in the above embodiment.

[0016] The vehicle lock of the embodiment of the utility model can improve the reliability of the vehicle lock.

[0017] The vehicle in the embodiment of the utility model comprises the vehicle lock described above.

[0018] The vehicle according to the embodiment of the utility model can improve the performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of an electromagnetic actuator according to an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of an electromagnetic actuator according to an embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of an electromagnetic actuator according to an embodiment of the utility model, and the push rod is in an extended position.

[0022] Figure 4 It is a schematic diagram of an electromagnetic actuator according to an embodiment of the utility model, and the push rod is in a retracted position.

[0023] Reference numerals:

[0024] Shell 1 , driving assembly 2 , magnetic conductor 21 , first permanent magnet 22 , first electromagnetic coil 23 , second electromagnetic coil 24 , moving assembly 3 , second permanent magnet 31 , push rod 32 . DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0026] The electromagnetic actuator of the present utility model embodiment comprises a housing 1, a driving assembly 2 and a moving assembly 3. The driving assembly 2 comprises a magnetizer 21, a first permanent magnet 22, a first electromagnetic coil 23 and a second electromagnetic coil 24. The magnetizer 21 and the first permanent magnet 22 are arranged in the housing 1 and in the extension direction of the housing 1 (such as Figure 2 The first electromagnetic coil 23 is sleeved on the magnetizer 21, the second electromagnetic coil 24 is sleeved on the first permanent magnet 22, and the first electromagnetic coil 23 and the second electromagnetic coil 24 are reversely connected in series. The moving component 3 includes a second permanent magnet 31, which is arranged between the magnetizer 21 and the first permanent magnet 22, and the second permanent magnet 31 is movable relative to the driving component 2 along the extension direction of the housing 1.

[0027] Specifically, Figure 1 and Figure 2 As shown, the magnetizer 21 is located on the left side of the shell 1, and the magnetizer 21 is connected to the shell 1 to fix the magnetizer 21 on the shell 1, the first electromagnetic coil 23 is placed on the magnetizer 21, the first permanent magnet 22 is located on the right side of the shell 1, and the first permanent magnet 22 is connected to the shell 1 to fix the first permanent magnet 22 on the shell 1, the second electromagnetic coil 24 is arranged on the outer ring of the first permanent magnet 22, and the spacing distance between the magnetizer 21 and the first permanent magnet 22 in the left and right directions is greater than the size of the second permanent magnet 31 in the left and right directions, so that the second permanent magnet 31 can move in the left and right directions.

[0028] The first permanent magnet 22 is a low coercive force permanent magnet, for example, the first permanent magnet 22 is a low coercive force permanent magnet such as aluminum nickel cobalt and samarium cobalt, and the second permanent magnet 31 is a neodymium iron boron permanent magnet. When an external magnetic field or current acts on the low coercive force first permanent magnet 22, the internal magnetization state of the first permanent magnet 22 is more easily affected and changed, and after the external influence disappears, the first permanent magnet 22 will still maintain its internal magnetization state and interact with the second permanent magnet 31, thereby increasing the holding force of the second permanent magnet 31 when no power is applied.

[0029] Compared with the setting of setting a spring and maintaining current in the related art, the electromagnetic actuator of this embodiment arranges the magnetizer 21 and the first permanent magnet 22 in the left and right directions at intervals, sets the first electromagnetic coil 23 and the second electromagnetic coil 24 corresponding to the magnetizer 21 and the first permanent magnet 22, and connects the first electromagnetic coil 23 and the second electromagnetic coil 24 in reverse series. When an instantaneous pulse current is passed through the first electromagnetic coil 23 and the second electromagnetic coil 24 to establish a magnetic field, the second permanent magnet 31 located between the magnetizer 21 and the first permanent magnet 22 moves to the left or right under the action of the magnetizer 21 and the first permanent magnet 22 to get closer to the magnetizer 21 or the first permanent magnet 22, and when the first electromagnetic coil 23 and the second electromagnetic coil 24 are powered off, the first permanent magnet 22 still maintains its magnetic field state, so that the second permanent magnet 31 remains in the current position, thereby improving the reliability of the electromagnetic actuator.

[0030] In some embodiments, the moving assembly 3 further includes a push rod 32 , which extends along the extension direction of the shell 1 , and one end of the push rod 32 extends into the shell 1 and is connected to one end of the second permanent magnet 31 close to the first permanent magnet 22 .

[0031] Specifically, Figure 2 As shown, the push rod 32 extends in the left-right direction, and the housing 1 is provided with a through hole matched with the push rod 32, so as to facilitate the installation of the push rod 32. The left end of the push rod 32 extends into the housing 1 and can be connected to the right end of the first permanent magnet 22, and the right end of the push rod 32 is located outside the housing 1, and the movement of the push rod 32 in the left-right direction is driven by the movement of the second permanent magnet 31 in the left-right direction.

[0032] The push rod 32 is a cylindrical push rod 32, and the second permanent magnet 31 is a cylindrical permanent magnet. On the projection plane parallel to the left-right direction and the front-to-back direction, the outer contours of the push rod 32 and the second magnet 21 are both rectangular. The size of the push rod 32 in the front-to-back direction is smaller than the size of the second magnet 21 in the front-to-back direction, and the axis of the push rod 32 coincides with the axis of symmetry of the second magnet 21. The push rod 32 is connected to the middle part of the second permanent magnet 31, so that the second permanent magnet 31 can drive the push rod 32 to move.

[0033] In some embodiments, the first permanent magnet 22 is an annular permanent magnet, which is sleeved on the push rod 32 . The push rod 32 is coaxially arranged with the first permanent magnet 22 , and the push rod 32 can move along the axial direction of the push rod 32 relative to the first permanent magnet 22 .

[0034] Specifically, Figure 2 As shown, in this embodiment, by setting the first permanent magnet 22 in a ring shape, it is convenient for the push rod 32 to pass through the first permanent magnet 22 and connect with the second permanent magnet 31. The coaxial arrangement of the first permanent magnet 22 and the push rod 32 can enhance the magnetic field in the axial direction and improve the efficiency of the use of the magnetic field.

[0035] Furthermore, the provision of the annular permanent magnet can reduce magnetic field leakage, and can better maintain the stability of the magnetic field when subjected to vibration or impact, thereby improving the stability of the electromagnetic actuator.

[0036] In some embodiments, in the direction parallel to the extension direction and the width direction of the housing 1 (eg Figure 2 On the projection surface (in the front-to-back direction as shown), the outer contour of the magnetizer 21 is a rectangle, and the axis of the rectangle coincides with the axis of the push rod 32.

[0037] Specifically, Figure 2 As shown, the magnetic conductor 21 is a cylindrical magnetic conductor. By guiding the magnetic field through the cylindrical magnetic conductor, when the magnetic conductor 21 cooperates with the first permanent magnet 22 and the second permanent magnet, the magnetic field in the axial direction can be further concentrated and enhanced, thereby improving the reliability of the electromagnetic actuator.

[0038] In some embodiments, at least one of the first electromagnetic coil 23 and the electromagnetic coil is a ring-shaped electromagnetic coil.

[0039] Specifically, Figure 2 As shown, the first electromagnetic coil 23 and the second electromagnetic coil 24 are both annular electromagnetic coils. The setting of the annular electromagnetic coils can produce a uniform magnetic field distribution, and the magnetic field generated by the annular electromagnetic coils is more concentrated in the axial direction. The magnetic field generated by the annular electromagnetic coils interacts with the magnetic field of the second permanent magnet 31, which can improve the stability of the electromagnetic actuator.

[0040] In some embodiments, the push rod 32 has an extended position. In the extended position, the first electromagnetic coil 23 and the second electromagnetic coil 24 are energized to establish a first magnetic field, the second permanent magnet 31 is attracted to the first permanent magnet 22, and the second permanent magnet 31 is repelled from the magnetizer 21.

[0041] Specifically, Figure 3 As shown, in this embodiment, a first magnetic field is established by passing an instantaneous pulse current through the first electromagnetic coil 23 and the second electromagnetic coil 24. Under the action of the first magnetic field, the second permanent magnet 31 is repelled by the magnetizer 21 and attracted by the first permanent magnet 22 at the same time. The second permanent magnet 31 moves to the right, thereby driving the push rod 32 to move to the right, thereby extending the push rod 32.

[0042] In some embodiments, the push rod 32 has a retracted position. In the retracted position, the first electromagnetic coil 23 and the second electromagnetic coil 24 are energized to establish a second magnetic field, the second permanent magnet 31 repels the first permanent magnet 22 , and the second permanent magnet 31 attracts the magnetizer 21 .

[0043] Specifically, Figure 4As shown, in this embodiment, a second magnetic field is established by passing an instantaneous pulse current through the first electromagnetic coil 23 and the second electromagnetic coil 24. Under the action of the second magnetic field, the second permanent magnet 31 is attracted by the magnetizer 21 and repelled by the first permanent magnet 22. The second permanent magnet 31 moves to the left, thereby driving the push rod 32 to move to the left, thereby realizing the retraction of the push rod 32.

[0044] In this embodiment, an instantaneous pulse current is passed through the first electromagnetic coil 23 and the second electromagnetic coil 24 to change the magnetization intensity and direction of the second permanent magnet 31, so that the first permanent magnet 22 and the second permanent magnet 31 attract or repel each other. Since the first electromagnetic coil 23 and the second electromagnetic coil 24 are connected in series in reverse, when the first permanent magnet 22 and the second permanent magnet 31 are attracted to each other, the second permanent magnet 31 and the magnetizer 21 repel each other, or when the first permanent magnet 22 and the second permanent magnet 31 repel each other, the second permanent magnet 31 and the magnetizer 21 attract each other, thereby switching the push rod 32 between the extended position and the retracted position.

[0045] In some embodiments, the attraction between the second permanent magnet 31 and the first permanent magnet 22 is greater than the attraction between the second permanent magnet 31 and the magnetizer 21 .

[0046] Specifically, the attraction between the second permanent magnet 31 and the first permanent magnet 22 of this embodiment is greater than the attraction between the second permanent magnet 31 and the magnetizer 21 , thereby increasing the holding force under non-power supply and thus improving the reliability of the electromagnetic actuator.

[0047] The vehicle lock of the embodiment of the utility model comprises a vehicle lock body and an electromagnetic actuator. The vehicle lock body is suitable for being installed on a vehicle door. The electromagnetic actuator is installed inside the vehicle lock body and connected to the vehicle lock body. The electromagnetic actuator is used to control the locking and unlocking of the vehicle lock body. The electromagnetic actuator is the electromagnetic actuator of the above embodiment.

[0048] The electromagnetic actuator in this embodiment is connected to the vehicle lock body, and the locking and unlocking of the vehicle lock body are controlled by switching the push rod 32 of the electromagnetic actuator between the extended position and the retracted position. The electromagnetic actuator in this embodiment has a large holding force when not powered, which can improve the holding force of the vehicle lock in both locked and unlocked states, thereby improving the reliability of the vehicle lock.

[0049] The vehicle of the embodiment of the utility model comprises the vehicle lock of the above embodiment.

[0050] The vehicle of this embodiment adopts the vehicle lock of the above embodiment, which can improve the reliability of the vehicle lock and further improve the performance of the vehicle.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] It is understandable that the above embodiments are exemplary and cannot be construed as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An electromagnetic actuator, characterized in that: include: case; A drive assembly, the drive assembly comprising a magnetizer, a first permanent magnet, a first electromagnetic coil and a second electromagnetic coil, the magnetizer and the first permanent magnet are arranged in the housing and spaced apart in the extension direction of the housing, the first electromagnetic coil is sleeved on the magnetizer, the second electromagnetic coil is sleeved on the first permanent magnet, and the first electromagnetic coil and the second electromagnetic coil are reversely connected in series; The moving component includes a second permanent magnet, the second permanent magnet is arranged between the magnetic conductor and the first permanent magnet, and the second permanent magnet is movable relative to the driving component along the extension direction of the shell.

2. The electromagnetic actuator according to claim 1, characterized in that: The moving assembly further includes a push rod extending along an extension direction of the shell, one end of the push rod extending into the shell and connected to an end of the second permanent magnet close to the first permanent magnet.

3. The electromagnetic actuator according to claim 2, characterized in that: The first permanent magnet is an annular permanent magnet, which is sleeved on the push rod. The push rod is coaxially arranged with the first permanent magnet, and the push rod can move along the axial direction of the push rod relative to the first permanent magnet.

4. The electromagnetic actuator according to claim 2, characterized in that: On a projection plane parallel to the extension direction and the width direction of the shell, the outer contour of the magnetic conductor is a rectangle, and the axis of the rectangle coincides with the axis of the push rod.

5. The electromagnetic actuator according to claim 2, characterized in that: At least one of the first electromagnetic coil and the second electromagnetic coil is a ring-shaped electromagnetic coil.

6. The electromagnetic actuator according to claim 5, characterized in that: The push rod has an extended position, in which the first electromagnetic coil and the second electromagnetic coil are energized to establish a first magnetic field, the second permanent magnet is attracted to the first permanent magnet, and the second permanent magnet is repelled from the magnetic conductor.

7. The electromagnetic actuator according to claim 6, characterized in that: The push rod has a retracted position, in which the first electromagnetic coil and the second electromagnetic coil are energized to establish a second magnetic field, the second permanent magnet repels the first permanent magnet, and the second permanent magnet attracts the magnetic conductor.

8. The electromagnetic actuator according to claim 7, characterized in that: The attraction between the second permanent magnet and the first permanent magnet is greater than the attraction between the second permanent magnet and the magnetic conductor.

9. A car lock, characterized in that: include: A vehicle lock body, wherein the vehicle lock body is suitable for being installed on a vehicle door; An electromagnetic actuator, wherein the electromagnetic actuator is installed inside the vehicle lock body and connected to the vehicle lock body, and the electromagnetic actuator is used to control the locking and unlocking of the vehicle lock body. The electromagnetic actuator is the electromagnetic actuator described in any one of claims 1 to 8 above.

10. A vehicle, characterized in that: Comprising the vehicle lock as claimed in claim 9.

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