Locking device for charging socket unit and charging socket unit

Abstract

The invention relates to a locking device (100) for a charging socket unit (1000), comprising: an electromotive servo drive (110); a first locking mechanism (120a, 120b) which can be actuated by means of the servo drive (110) and which has a locking pin (121a, 121b) for locking the charging plug to the charging socket (200) of the charging socket unit (1000); and a second locking mechanism (130) which can be actuated by the servo drive (110) and is designed to lock the socket cover (300) of the charging socket unit (1000). The invention also relates to a charging socket unit for a charging station or an electric vehicle having a locking device according to the invention.

Description

Technical Field

[0001] The invention relates to a locking device for a charging socket unit and to a charging socket unit for a charging station or an electric vehicle having a locking device according to the invention. Background Art

[0002] For the conductive charging or discharging of the battery of an electric vehicle at a charging station, standardized plug types and charging modes are known, in particular from the international standard IEC 62196. This involves, on the one hand, a mechanical locking of the charging plug on the charging socket as a safety measure during the charging process. In the type 2 charging coupler used as the European standard for electric vehicles, the inserted charging plug is locked on the charging socket by a locking pin. The locking pin is a component of a locking device, which drives the displacement of the locking pin to close and open the lock.

[0003] The charging socket must also be protected from weather and environmental influences, for which socket covers with a spring-tensioned cover plate are known in the prior art. However, these generally do not provide sufficient sealing to reliably prevent the ingress of moisture or dust, especially as they age. Furthermore, there is a disadvantage that there is no protection against unauthorized opening and vandalism. Summary of the invention

[0004] The object of the present invention is to provide a locking device and an associated charging socket unit which both lock the charging plug in a standardized manner and protect the charging socket in a targeted manner outside the charging operation.

[0005] This object is achieved based on a locking device according to claim 1 and a charging socket unit equipped with the locking device according to claim 6. Advantageous developments of the invention are specified in the dependent claims.

[0006] The technical teaching of the present invention discloses a locking device for a charging socket unit, the locking device comprising:

[0007] Electric servo drive;

[0008] a first locking mechanism which can be actuated by an actuating drive and has a locking pin for locking the charging plug to the charging socket of the charging socket unit; and

[0009] A second locking mechanism can be actuated by an actuating drive and is designed to lock a socket cover of the charging socket unit.

[0010] The idea of ​​the present invention is to construct a locking device with two locking mechanisms, both of which can be actuated by the same electric servo drive and are provided for locking the charging plug and the socket cover. As a result, a locking device with an expanded functional range is created, but the locking device is configured to be compatible with the charging socket unit commonly used in the prior art in terms of installation dimensions and installation position on the associated charging socket. The locking pin has a pin-shaped end section, which is configured to engage with the associated receiving portion on the periphery of the charging plug, so that the locking pin can be prevented from being undesirably pulled out of the charging socket. The socket cover can be locked outside the charging operation by the second locking mechanism, so that unauthorized opening can be prevented. In addition, the second locking mechanism can preferably apply such a force to the socket cover that the socket cover is tightly attached to the retaining portion of the charging socket unit.

[0011] In particular, the electric servo drive has an output shaft, wherein the first locking mechanism and / or the second locking mechanism are at least partially received on the output shaft and are connected to the output shaft in a rotationally fixed manner. Thus, by actuating the servo drive, both locking mechanisms can preferably be actuated simultaneously. In addition to the electric motor, the servo drive also includes, for example, a transmission connected upstream of the output shaft.

[0012] An advantageous embodiment of the locking device is characterized in that the first locking mechanism

[0013] A drive arm with an elongated hole is provided, wherein the drive arm is connected to an output shaft of the actuating drive in a rotationally fixed manner and projects radially from the output shaft, wherein the locking pin has a pin which engages in the elongated hole, and

[0014] having a retaining frame for guiding the locking pin,

[0015] The rotation of the output shaft can be converted into a translation of the locking pin. The rotation of the output shaft leads to a pivoting movement of the drive arm and, via the pin driven in the slot, a displacement of the linearly guided locking pin. Between the expedient extreme positions of the locking pin, the rotation angle of the output shaft can be, for example, approximately 90°.

[0016] An alternative embodiment is characterized in that the first locking mechanism

[0017] A gear wheel is connected to the output shaft of the actuating drive in a rotationally fixed manner, wherein the locking pin is partially designed as a toothed rack in which the gear wheel engages, and

[0018] having a retaining frame for guiding the locking pin,

[0019] The rotation of the output shaft can be converted into the translation of the locking pin.

[0020] The second locking mechanism has in particular a hook which is connected to the output shaft in a rotationally fixed manner and is designed to engage in an eye on the socket cover. A rotation of the output shaft causes a pivoting movement of the hook, so that the hook is guided into or out of the eye. Preferably, the hook in the locked position, i.e. when engaged with the eye, exerts a force on the eye, by which the socket cover is pressed against an associated contact surface of the charging socket unit, thereby improving the seal against the ingress of water or dust.

[0021] In addition, the present invention relates to a charging socket unit for a charging station or an electric vehicle, the charging socket unit comprising a charging socket, a socket cover for closing the charging socket, and a locking device according to one of the above embodiments, wherein the locking device is arranged so that the charging plug can be locked on the charging socket by operating a first locking mechanism, and the socket cover can be locked by operating a second locking mechanism. The locking device is particularly arranged above the charging socket, and an opening for a locking pin is configured on the housing of the charging socket, so that the locking pin can be guided through and into a receiving portion on the charging plug to be locked when locking.

[0022] The charging socket unit according to the invention can in principle be configured for use in different types of electric vehicles, in particular for passenger cars, trucks or construction machines.

[0023] In a preferred embodiment of the charging socket unit, the socket cover comprises a cover plate with an inner eye, wherein the second locking mechanism has a hook, wherein the hook can be rotated or pivoted via an output shaft of the locking device between a locking position in which the hook engages in the eye and a release position in which the hook is designed not to be connected to the eye.

[0024] In particular, the charging socket of the charging socket unit according to the invention is configured as a type 2 socket in accordance with standard IEC 62196-2. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following description of preferred embodiments of the present invention shows further measures for improving the present invention with reference to the accompanying drawings. In the accompanying drawings:

[0026] Figure 1a , 1b The locking device is shown in released and locked positions;

[0027] Figure 2a , 2b Show Figure 1b Additional views of

[0028] Figure 3a , 3b An electric servo drive is shown;

[0029] Figure 4 A first embodiment of a locking pin is shown;

[0030] Figure 5 Shown for Figure 4 a locking pin retaining frame;

[0031] Figure 6a , 6b A first embodiment of a first locking mechanism is shown in released and locked positions;

[0032] Figure 7 A second embodiment of a locking pin is shown;

[0033] Figure 8 A second embodiment of the first locking mechanism is shown;

[0034] Figure 9a-11b View showing a charging socket unit with locked and open socket cover. DETAILED DESCRIPTION

[0035] Figures 1a to 2b A perspective view of an embodiment of a locking device 100 according to the present invention is shown, wherein for the sake of clarity, a holding frame for guiding a locking pin 121a is not shown. The locking device 100 comprises an electric servo drive 110, a first locking mechanism 120a with a locking pin 121a that can be actuated by the servo drive 110 for locking a charging plug, and a second locking mechanism 130 that can be actuated by the servo drive 110 for locking a socket cover. Figure 1a The two locking mechanisms 120a, 130 are shown in a released position, with the other figures showing a locked position.

[0036] The servo drive 110 has an output shaft (not visible here) which can rotate about an axis of rotation 114, wherein a first locking mechanism 120a and a second locking mechanism 130 are received on the output shaft in a component manner and are connected to it in a rotationally fixed manner. The electric components of the servo drive 110 are received in its housing 112 and are powered and / or controlled via a contact sleeve 115.

[0037] The first locking mechanism 120a has a drive arm 122 with a slot 123, wherein the drive arm 122 is connected to the output shaft of the servo drive 110 in a rotationally fixed manner and projects radially therefrom, wherein the locking pin 121a has a pin 124 that engages in the slot 123. The slot is particularly Figure 2b 121a, wherein the locking pin is not shown for this purpose. Figure 5) When the output shaft cooperates with the rotation axis 114, the rotation of the output shaft about the rotation axis 114 can be converted into a translation of the locking pin 121a, that is, a linear up and down movement between the extreme positions shown in the figure. The pin-shaped end section of the locking pin 121a is used to engage in a matching receiving portion on the charging plug to be locked.

[0038] The second locking mechanism 130 has a hook 131, which is connected to the output shaft in a rotationally fixed manner and is configured to engage in a hole on the socket cover. Through the actuating drive 110, the two locking mechanisms 120a, 130 can be simultaneously actuated and are respectively in a corresponding release or locking position.

[0039] The locking device 100 further includes an emergency unlocking mechanism having an emergency unlocking lever 113 extending from the rear side of the housing 112 for manually rotating the output shaft to unlock or lock the two locking mechanisms 120 a , 130 in the event of failure of the electric servo drive 110 .

[0040] Figure 3a and Figure 3b An electric actuating drive 110 of a locking device according to the invention is shown, wherein: Figure 3b The front cover of the middle housing 112 is removed so that the internal electric components are visible. The servo drive 110 includes an electric motor 117, which drives the output shaft 111 via an intermediately connected gear transmission 118. A receiving member 116 is arranged on the output shaft 111, through which a non-rotatable connection with the locking mechanism can be achieved. The pressure acting on the socket cover can be detected by the pressure sensor 119, so that a control command for unlocking the locking mechanism can be issued to the electric motor. This pressure-controlled opening of the charging socket unit can be activated, for example, during specific operating times of the associated charging station, so that the user can start the charging process by manually pressing.

[0041] Figure 4 Shown with Figure 1a-2b The first embodiment of the locking pin 121a corresponds to the embodiment of Figure 5 An associated retaining frame 125a is shown, which was not shown in the previous figures for the sake of clarity. Figure 6a and Figure 6b In FIG. 1 , all components of the first locking mechanism 120 a are shown in a rear view.

[0042] The locking pin 121a comprises a pin 124 for engaging in an elongated hole 124 on the drive arm 122, and a spring 128 for inserting into a guide groove 127 of the holding frame 125a. The holding frame 125a provides space for a pivoting range of approximately 90° for the drive arm 122, wherein the pivoting of the drive arm 122 is achieved by rotating the output shaft of the servo drive (not shown) which is connected in a rotationally fixed manner about the rotation axis 114. For connection to the housing of the servo drive, the holding frame 125a comprises a latching arm 126.

[0043] Figure 6a The locking pin 121a is shown in a released position in which it is fully displaced into the retaining frame 125a, and Figure 6b A locking position is shown in which a pin-shaped end section of the locking pin 121 a protrudes from the holding frame 125 a at the bottom so that it can engage with a matching receptacle on the charging plug.

[0044] Figure 7 A second embodiment of a locking pin 121 b is shown, which is partially designed as a toothed rack 129. Figure 8 , the locking pin 121 b and the associated holding frame 125 b are shown as components of a second embodiment of the first locking mechanism 120 b. The associated gear is not shown, which is connected to the output shaft of the servo drive 110 in a rotationally fixed manner and can thus rotate about the rotation axis 114. Thus, by means of the engagement of the gear with the rack 129, a rotation of the output shaft can be converted into a translation of the locking pin 121 b.

[0045] Figures 9a to 10b A perspective view of an embodiment of a charging socket unit 1000 according to the invention is shown, which comprises a charging socket 200, a socket cover 300 and a locking device 100 according to the invention. The charging socket 200 is designed as a type 2 socket according to the IEC 62196-2 standard. The charging socket unit 1000 is accommodated on a holder 400 as a component of a charging station, for example. Furthermore, vehicle-side integration is possible.

[0046] The locking device 100 is arranged such that the charging plug can be locked on the charging socket 200 by operating the first locking mechanism 120 a , and the socket cover 300 can be locked by operating the second locking mechanism 130 .

[0047] The socket cover 300 comprises a cover plate 320 with an inner hole 310, wherein the second locking mechanism 130 has an associated hook 131. The hook 131 can be locked by the output shaft of the locking device 100. Figure 9a and 10a The locked position shown (in which the hook 131 engages in the eye 310) and Figure 9b and 10b The hook 131 is configured to rotate or pivot between the release position shown (in which the hook 131 is configured to not engage with the eyelet 310).

[0048] In the closed position, the socket cover 300 protectively covers the charging contacts 210 and allows the eyelet 310 to enter the pivoting range of the hook 131 through the gap 410 in the retaining portion 400. In the locked position, the hook 131 exerts a force on the cover through the eyelet 310 so that it is kept in close contact with the front side of the retaining portion 400.

[0049] Fig.11a and 11b 1 shows a portion of the same embodiment of the charging socket unit 1000, wherein the holding frame of the first locking mechanism 120a and the charging socket 200 except for the cover on the rear side are not shown here, so that the position of the locking pin 121a relative to the charging socket 200 is in the locked position ( Fig.11a ) and release position ( Fig.11b ). It can be seen that the pin-shaped end section of the locking pin 121a is inserted into the charging socket 200 through the circumference of the housing in order to lock the charging plug.

[0050] The invention is not limited to the preferred embodiments described above in its implementation. Instead, many variants are conceivable, which can also use the solution shown in principle in different types of implementation. All features and / or advantages (including structural details and spatial arrangements) derived from the claims, the description or the drawings can be important to the invention alone and in various combinations.

[0051] Reference numerals list

[0052] 1000 Charging socket unit

[0053] 100 Locking device

[0054] 110 Servo drive

[0055] 111 Output shaft

[0056] 112 Housing

[0057] 113 Emergency release lever

[0058] 114 Rotation axis

[0059] 115 Contact sleeve

[0060] 116 Acceptance

[0061] 117 Electric Motor

[0062] 118 Gear transmission

[0063] 119 Pressure sensor

[0064] 120a, 120b first locking mechanism

[0065] 121a, 121b Locking pin

[0066] 122 drive arm

[0067] 123 Long hole

[0068] 124 Pin

[0069] 125a, 125b Retention frame

[0070] 126 Locking arm

[0071] 127 Boot slot

[0072] 128 Spring

[0073] 129 Rack

[0074] 130 Second locking mechanism

[0075] 131 Hook

[0076] 200 Charging socket

[0077] 210 Charging contacts

[0078] 300 socket cover

[0079] 310 Eyelets

[0080] 320 Cover

[0081] 400 Holding unit

[0082] 410 Gap

Claims

1. A locking device (100) for a charging socket unit (1000), comprising: An electric servo drive (110); a first locking mechanism (120a, 120b) operable by a servo drive (110), the first locking mechanism having locking pins (121a, 121b) for locking the charging plug on the charging socket (200) of the charging socket unit (1000); as well as A second locking mechanism (130) can be actuated by an actuating drive (110), the second locking mechanism being designed to lock a socket cover (300) of a charging socket unit (1000).

2. The locking device (100) according to claim 1, characterized in that: The servo drive (110) has an output shaft (111), and a first locking mechanism (120a, 120b) and / or a second locking mechanism (130) are at least partially received on the output shaft (111) and are connected to the output shaft in a rotationally fixed manner.

3. The locking device (100) according to claim 2, characterized in that: First locking mechanism (120a) The invention relates to a drive arm (122) having a long hole (123), the drive arm (122) being non-rotatably connected to an output shaft (111) of a servo drive (110) and radially extending from the output shaft, the locking pin (121a) having a pin (124) engaging in the long hole (123), and having a holding frame (125a) for guiding the locking pin (121a), The rotation of the output shaft (111) can be converted into the translation of the locking pin (121a).

4. The locking device (100) according to claim 2, characterized in that: First locking mechanism (120b) A gear is provided, the gear being connected to an output shaft (111) of a servo drive (110) in a rotationally fixed manner, a locking pin (121b) being partially configured as a toothed rack (129), the gear being engaged in the toothed rack, and having a retaining frame (125b) for guiding the locking pin (121b), The rotation of the output shaft (111) can be converted into the translation of the locking pin (121b).

5. The locking device (100) according to any one of claims 2 to 4, characterized in that: The second locking mechanism (130) has a hook (131) which is connected to the output shaft (111) in a rotationally fixed manner and is designed to engage in an eyelet (310) on the socket cover (300).

6. A charging socket unit (1000) for a charging station or an electric vehicle, comprising a charging socket (200), a socket cover (300) for closing the charging socket (200) and a locking device (100) according to one of the preceding claims, wherein: The locking device (100) is arranged so that a charging plug can be locked on a charging socket (200) by operating a first locking mechanism (120a, 120b) and a socket cover (300) can be locked by operating a second locking mechanism (130).

7. The charging socket unit (1000) according to claim 6, characterized in that: The socket cover (300) comprises a cover plate (320) with an inner eyelet (310), and the second locking mechanism (130) has a hook (131), which can be rotated between a locking position in which the hook (131) is engaged in the eyelet (310) and a release position in which the hook (131) is configured to be not connected to the eyelet (310) via an output shaft (111) of the locking device (100).

8. The charging socket unit (1000) according to claim 6 or 7, characterized in that: The charging socket (200) is designed as a type 2 socket according to standard IEC 62196-2.

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