Electronic lock and charging seat assembly

Abstract

The utility model discloses an electronic lock and a charging seat assembly. The electronic lock is used for locking the charging gun to the charging base. The electronic lock includes: a housing in which a pin hole is formed; the locking pin extends out of the shell through the pin hole and is suitable for moving between a locking position where the locking pin is jointed with the charging gun and an unlocking position where the locking pin is separated from the charging gun; and the movable seat is movably mounted in the shell and is used for driving the locking pin to move forwards to the locking position and driving the locking pin to move backwards to the unlocking position. The locking pin is movably installed on the moving seat, so that the moving seat can move backwards by a first distance relative to the locking pin when the locking pin is kept at the locking position. Therefore, when the motor for driving the moving seat to move is powered off, the locking pin cannot move backwards for a certain distance along with the moving seat, and the locking reliability and the use safety of the electronic lock are improved.

Description

Technical Field

[0001] The utility model relates to an electronic lock for locking a charging gun to a charging seat and a charging seat assembly comprising the electronic lock. Background Art

[0002] In the prior art, a new energy electric vehicle is provided with a charging base for matching with a charging gun to charge the onboard battery. In order to prevent the charging gun from accidentally separating from the charging base during charging, an electronic lock is usually installed on the charging base. During charging, the electronic lock locks the charging gun inserted into the charging base on the charging base to prevent the charging gun from accidentally separating from the charging base and ensure safety during charging.

[0003] In the prior art, an electronic lock generally includes a mobile seat, a locking pin fixed to the mobile seat, and a motor for driving the mobile seat to move. The motor drives the locking pin to move between a locking position engaged with the charging gun and an unlocking position separated from the charging gun through the mobile seat. When the locking pin is driven to the locking position, the motor is powered off. However, a reverse electromotive force is generated at the moment the motor is powered off, and the motor drives the locking pin to move a short distance backward from the locking position under the action of the reverse electromotive force, which causes the locking pin to be unable to reliably lock the charging gun to the charging seat, and there is a risk that the charging gun will be detached from the charging seat. Utility Model Content

[0004] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0005] According to one aspect of the utility model, an electronic lock is provided. The electronic lock is used to lock the charging gun to the charging base. The electronic lock comprises: a housing formed with a pin hole; a locking pin extending from the housing through the pin hole and adapted to move between a locking position engaged with the charging gun and an unlocking position separated from the charging gun; and a moving seat movably mounted in the housing for driving the locking pin to move forward to the locking position and for driving the locking pin to move backward to the unlocking position. The locking pin is movably mounted on the moving seat so that the moving seat can move backward a first distance relative to the locking pin when the locking pin is maintained in the locking position.

[0006] According to an exemplary embodiment of the utility model, the electronic lock further includes: a motor installed in the housing, for driving the moving seat to move, so as to drive the locking pin to move between the locking position and the unlocking position through the moving seat. When the locking pin is driven to the locking position, the motor is powered off and drives the moving seat to move backwards relative to the locking pin by a second distance under the action of the reverse electromotive force generated when the power is off, and the second distance is not greater than the first distance.

[0007] According to another exemplary embodiment of the utility model, a semi-cylindrical accommodating groove is formed on the bottom surface of the movable seat, and the rear end portion of the locking pin is movably accommodated in the accommodating groove; a C-shaped snap ring is formed in the accommodating groove of the movable seat, and a neck is formed on the rear end portion of the locking pin, and the C-shaped snap ring is movably clamped on the neck of the locking pin.

[0008] According to another exemplary embodiment of the present utility model, the first distance is equal to the length of the neck of the locking pin in the axial direction of the locking pin minus the thickness of the C-shaped retaining ring in the axial direction of the locking pin.

[0009] According to another exemplary embodiment of the utility model, the neck of the locking pin has a front step surface and a rear step surface opposite to each other in its axial direction, and the C-shaped retaining ring has a front side surface and a rear side surface opposite to each other in its thickness direction; when the moving seat drives the locking pin to move forward, the front side surface of the C-shaped retaining ring abuts against the front step surface of the neck of the locking pin; when the moving seat drives the locking pin to move backward, the rear side surface of the C-shaped retaining ring abuts against the rear step surface of the neck of the locking pin.

[0010] According to another exemplary embodiment of the utility model, the electronic lock further comprises: a retaining member rotatably mounted in the housing and adapted to rotate between a retaining position and an initial position. When the locking pin is driven to the locking position, the retaining member is driven to the retaining position to retain the locking pin in the locking position by the retaining member.

[0011] According to another exemplary embodiment of the utility model, the movable seat is also used to drive the retaining member to rotate between the retaining position and the initial position; when the locking pin is driven to the locking position by the movable seat, the retaining member is driven to the retaining position by the movable seat.

[0012] According to another exemplary embodiment of the utility model, a locking surface is formed on the retaining member, and the movable seat has a locking portion, which is suitable for abutting against the locking surface and sliding relative to the locking surface, so as to lock the retaining member in the retaining position. When the distance that the movable seat moves backward relative to the locking pin retained in the locking position is not greater than the second distance, the locking portion abuts against the locking surface, so that the retaining member is locked in the retaining position.

[0013] According to another exemplary embodiment of the utility model, when the distance that the movable seat moves backward relative to the locking pin held in the locking position is greater than the second distance, the locking portion disengages from the locking surface to allow the retaining member to be rotated from the retaining position toward the initial position under the drive of the movable seat.

[0014] According to another exemplary embodiment of the utility model, the retaining member has a retaining portion, which is suitable for abutting against the rear end face of the locking pin to keep the locking pin in the locking position; when the distance that the moving seat moves backward relative to the locking pin held in the locking position is not greater than the second distance, the retaining portion abuts against the rear end face of the locking pin to keep the locking pin in the locking position.

[0015] According to another exemplary embodiment of the utility model, when the distance that the movable seat moves backward relative to the locking pin held in the locking position is greater than the second distance, the locking portion of the movable seat contacts the retaining portion of the retaining member and pushes the retaining member to rotate from the retaining position toward the initial position.

[0016] According to another exemplary embodiment of the present invention, the retaining member further has a tooth groove, and the moving seat further has a tooth portion, and the tooth portion is suitable for engaging with the tooth groove to retain the retaining member in the initial position.

[0017] According to another exemplary embodiment of the utility model, the retaining member is cam-shaped and is rotatably installed in the shell through a rotating shaft, so that the retaining member can rotate around the axis of the rotating shaft; the axis of the locking pin extends in the longitudinal direction of the shell, and the axis of the rotating shaft extends in the transverse direction of the shell, so that the axis of the rotating shaft is perpendicular to the axis of the locking pin.

[0018] According to another exemplary embodiment of the utility model, the electronic lock also includes: a transmission device, installed in the housing and connected between the motor and the moving seat, for converting the rotational motion of the output shaft of the motor into linear motion of the moving seat to drive the moving seat to move axially along the locking pin.

[0019] According to another exemplary embodiment of the utility model, the transmission device includes: a first bevel gear mounted on the output shaft of the motor; a first rotating shaft rotatably mounted in the housing; a second bevel gear fixed to one end of the first rotating shaft and meshing with the first bevel gear; a first spur gear fixed to the other end of the first rotating shaft; a second rotating shaft rotatably mounted in the housing; a second spur gear fixed to one end of the second rotating shaft and meshing with the first spur gear; a third spur gear fixed to the other end of the second rotating shaft; a third rotating shaft rotatably mounted in the housing; a fourth spur gear fixed to one end of the third rotating shaft and meshing with the third spur gear; and a fifth spur gear fixed to the other end of the third rotating shaft. A rack portion is formed on the moving seat, and the rack portion meshes with the fifth spur gear.

[0020] According to another exemplary embodiment of the utility model, the movable seat includes a front end body, a rear end body and a connecting body connected between the front end body and the rear end body; the rear end portion of the locking pin is movably mounted on the front end body of the movable seat, and the rack portion is formed on the connecting body of the movable seat.

[0021] According to another exemplary embodiment of the present utility model, the electronic lock further comprises: a pull rope connected to the rear end body of the moving seat and led out from the housing to allow the locking pin to be reset to the unlocking position by pulling the pull rope.

[0022] According to another exemplary embodiment of the present utility model, the electronic lock further includes: a rope loop, which is installed on the housing and is used to guide the pull rope to be led out of the housing.

[0023] According to another aspect of the utility model, a charging base assembly is provided. The charging base assembly includes: a charging base; and the aforementioned electronic lock, which is fixedly mounted on the charging base. When the locking pin of the electronic lock is moved to the locking position, the locking pin engages with the charging gun inserted into the charging base to prevent the charging gun from being pulled out of the charging base. When the locking pin of the electronic lock is moved to the unlocking position, the locking pin is separated from the charging gun inserted into the charging base to allow the charging gun to be pulled out of the charging base.

[0024] In the above-mentioned various exemplary embodiments of the utility model, the moving seat can move backwards by a predetermined distance relative to the locking pin when the locking pin is held in the locked position. Therefore, when the motor driving the moving seat to move is powered off, the locking pin will not move backwards by a certain distance following the moving seat, thereby improving the locking reliability and use safety of the electronic lock.

[0025] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional schematic diagram showing an electronic lock according to an exemplary embodiment of the utility model;

[0027] Figure 2 A perspective schematic diagram showing an electronic lock according to an exemplary embodiment of the present invention, wherein the housing is removed;

[0028] Figure 3 An exploded schematic diagram showing an electronic lock according to an exemplary embodiment of the present invention, wherein the housing is removed;

[0029] Figure 4 A perspective schematic diagram showing a locking pin, a moving seat and a retaining member of an electronic lock according to an exemplary embodiment of the present utility model when viewed from the top;

[0030] Figure 5 A schematic diagram showing the assembly of a locking pin and a moving seat of an electronic lock according to an exemplary embodiment of the utility model when viewed from the bottom;

[0031] Figure 6 An exploded schematic diagram showing a locking pin and a moving seat of an electronic lock according to an exemplary embodiment of the utility model when viewed from the bottom;

[0032] Figure 7 A longitudinal cross-sectional view showing an electronic lock according to an exemplary embodiment of the present invention, wherein the locking pin is in a locked position and the retaining member is locked in a retaining position;

[0033] Figure 8 A perspective schematic diagram showing a locking pin, a moving seat and a retaining member of an electronic lock according to an exemplary embodiment of the utility model, wherein the locking pin is in a locking position, the retaining member is locked in a retaining position and the moving seat has not yet moved backward relative to the locking pin;

[0034] Fig. 9 show Figure 8 A plan cross-sectional view of the locking pin, the moving seat and the retaining member of the electronic lock shown;

[0035] Fig.10 An exploded schematic diagram showing a locking pin, a moving seat and a retaining member of an electronic lock according to an exemplary embodiment of the utility model;

[0036] Fig.11A three-dimensional schematic diagram showing a locking pin, a moving seat and a retaining member of an electronic lock according to an exemplary embodiment of the utility model, wherein the moving seat has moved backwards by a second distance relative to the locking pin, the locking pin is in a locking position, and the retaining member is locked in a retaining position;

[0037] Fig.12 show Fig.11 A plan cross-sectional view of the locking pin, the moving seat and the retaining member of the electronic lock shown;

[0038] Fig.13 A three-dimensional schematic diagram showing a locking pin, a moving seat and a retaining member of an electronic lock according to an exemplary embodiment of the utility model, wherein the moving seat moves backward relative to the locking pin by a distance greater than a second distance, the locking pin is in a locked position, and the retaining member is in a release state capable of rotation;

[0039] Fig.14 show Fig.13 A plan cross-sectional view of the locking pin, the moving seat and the retaining member of the electronic lock shown;

[0040] Fig.15 A three-dimensional schematic diagram showing a locking pin, a moving seat and a retaining member of an electronic lock according to an exemplary embodiment of the utility model, wherein the moving seat and the locking pin move backward together, and the retaining member is in a release state capable of rotation;

[0041] Fig.16 show Fig.15 A plan cross-sectional view of the locking pin, moving seat and retaining member of the electronic lock is shown. DETAILED DESCRIPTION

[0042] The technical solution of the utility model is further specifically described below through examples and in combination with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the implementation mode of the utility model with reference to the accompanying drawings is intended to explain the overall utility model concept of the utility model, and should not be understood as a limitation of the utility model.

[0043] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0044] According to an overall technical concept of the utility model, an electronic lock is provided. The electronic lock is used to lock the charging gun to the charging base. The electronic lock comprises: a housing, formed with a pin hole; a locking pin, extending from the housing through the pin hole and suitable for moving between a locking position engaged with the charging gun and an unlocking position separated from the charging gun; and a moving seat, movably mounted in the housing, for driving the locking pin to move forward to the locking position and for driving the locking pin to move backward to the unlocking position. The locking pin is movably mounted on the moving seat so that the moving seat can move backward a first distance relative to the locking pin when the locking pin is maintained in the locking position.

[0045] According to another general technical concept of the utility model, a charging seat assembly is provided. The charging seat assembly includes: a charging seat; and the aforementioned electronic lock, which is fixedly mounted on the charging seat. When the locking pin of the electronic lock is moved to the locking position, the locking pin engages with the charging gun inserted into the charging seat to prevent the charging gun from being pulled out of the charging seat. When the locking pin of the electronic lock is moved to the unlocking position, the locking pin is separated from the charging gun inserted into the charging seat to allow the charging gun to be pulled out of the charging seat.

[0046] Figure 1 A three-dimensional schematic diagram showing an electronic lock according to an exemplary embodiment of the utility model; Figure 2 A perspective schematic diagram showing an electronic lock according to an exemplary embodiment of the present utility model, wherein the housing 1 is removed; Figure 3 An exploded schematic diagram of an electronic lock according to an exemplary embodiment of the present utility model is shown, wherein the housing 1 is removed; Figure 4 A three-dimensional schematic diagram showing a locking pin 2, a moving seat 3 and a retaining member 4 of an electronic lock according to an exemplary embodiment of the utility model when viewed from the top; Figure 5 A schematic diagram showing the assembly of a locking pin 2 and a moving seat 3 of an electronic lock according to an exemplary embodiment of the utility model when viewed from the bottom; Figure 6 An exploded schematic diagram showing a locking pin 2 and a moving seat 3 of an electronic lock according to an exemplary embodiment of the utility model when viewed from the bottom; Figure 7 A longitudinal cross-sectional view of an electronic lock according to an exemplary embodiment of the present utility model is shown, wherein the locking pin 2 is in a locking position and the retaining member 4 is locked in a retaining position; Figure 8 A three-dimensional schematic diagram showing a locking pin 2, a moving seat 3 and a retaining member 4 of an electronic lock according to an exemplary embodiment of the utility model, wherein the locking pin 2 is in a locking position, the retaining member 4 is locked in a retaining position and the moving seat 3 has not yet moved backward relative to the locking pin 2; Fig. 9 show Figure 8A plan cross-sectional view of the locking pin 2, the moving seat 3 and the retaining member 4 of the electronic lock shown; Fig.10 An exploded schematic diagram showing a locking pin 2, a moving seat 3 and a retaining member 4 of an electronic lock according to an exemplary embodiment of the present utility model; Fig.11 A three-dimensional schematic diagram showing a locking pin 2, a moving seat 3 and a retaining member 4 of an electronic lock according to an exemplary embodiment of the utility model, wherein the moving seat 3 has moved backwards by a second distance D2 relative to the locking pin 2, the locking pin 2 is in a locking position, and the retaining member 4 is locked in a retaining position; Fig.12 show Fig.11 A plan cross-sectional view of the locking pin 2, the moving seat 3 and the retaining member 4 of the electronic lock shown; Fig.13 A three-dimensional schematic diagram showing a locking pin 2, a moving seat 3 and a retaining member 4 of an electronic lock according to an exemplary embodiment of the utility model, wherein the distance D that the moving seat 3 moves backward relative to the locking pin 2 is greater than the second distance D2, the locking pin 2 is in a locked position, and the retaining member 4 is in a release state capable of rotation; Fig.14 show Fig.13 A plan cross-sectional view of the locking pin 2, the moving seat 3 and the retaining member 4 of the electronic lock shown; Fig.15 A three-dimensional schematic diagram showing a locking pin 2, a moving seat 3 and a retaining member 4 of an electronic lock according to an exemplary embodiment of the utility model, wherein the moving seat 3 and the locking pin 2 move backward together, and the retaining member 4 is in a release state capable of rotation; Fig.16 show Fig.15 A plan cross-sectional view of the locking pin 2, the moving seat 3 and the retaining member 4 of the electronic lock is shown.

[0047] like Figures 1 to 16 As shown, in an exemplary embodiment of the utility model, an electronic lock is disclosed. The electronic lock is used to lock a charging gun (not shown) to a charging base (not shown). The electronic lock comprises: a housing 1, a locking pin 2 and a movable base 3. The housing 1 is formed with a pin hole 10. The locking pin 2 extends from the housing 1 via the pin hole 10 and is suitable for moving between a locking position engaged with the charging gun and an unlocking position separated from the charging gun. The movable base 3 is movably mounted in the housing 1, and is used to drive the locking pin 2 to move forward to the locking position and to drive the locking pin 2 to move backward to the unlocking position. The locking pin 2 is movably mounted on the movable base 3, so that the movable base 3 can move backward relative to the locking pin 2 by a first distance D1 when the locking pin 2 is maintained in the locking position.

[0048] like Figures 1 to 16As shown, in the illustrated embodiment, the electronic lock further includes a motor 5, which is installed in the housing 1 and is used to drive the moving seat 3 to move, so as to be able to drive the locking pin 2 to move between the locking position and the unlocking position through the moving seat 3. When the locking pin 2 is driven to the locking position, the motor 5 is powered off and drives the moving seat 3 to move backwards relative to the locking pin 2 by a second distance D2 under the action of the reverse electromotive force generated when the power is off, and the second distance D2 is not greater than the first distance D1. Therefore, in the illustrated embodiment, when the motor 5 that drives the moving seat 3 to move is powered off, the locking pin 2 will not move backwards with the moving seat 3 for a distance, and the locking pin 2 will still be in the locking position, thereby improving the locking reliability and use safety of the electronic lock.

[0049] like Figures 1 to 16 As shown, in the illustrated embodiment, a semi-cylindrical receiving groove 30 is formed on the bottom surface of the movable seat 3, and the rear end of the locking pin 2 is movably received in the receiving groove 30. A C-shaped snap ring 31 is formed in the receiving groove 30 of the movable seat 3, and a neck 21 is formed on the rear end of the locking pin 2, and the C-shaped snap ring 31 is movably held on the neck 21 of the locking pin 2.

[0050] like Figures 1 to 16 As shown, in the illustrated embodiment, the aforementioned first distance D1 is equal to the length of the neck 21 of the locking pin 2 in the axial direction of the locking pin 2 minus the thickness of the C-shaped snap ring 31 in the axial direction of the locking pin 2 .

[0051] like Figures 1 to 16 As shown, in the illustrated embodiment, the neck 21 of the locking pin 2 has a front step surface 21a and a rear step surface 21b opposite to each other in its axial direction. The C-shaped snap ring 31 has a front side surface and a rear side surface opposite to each other in its thickness direction. When the movable seat 3 drives the locking pin 2 to move forward, the front side surface of the C-shaped snap ring 31 abuts against the front step surface 21a of the neck 21 of the locking pin 2. When the movable seat 3 drives the locking pin 2 to move backward, the rear side surface of the C-shaped snap ring 31 abuts against the rear step surface 21b of the neck 21 of the locking pin 2.

[0052] like Figures 1 to 16 As shown, in the illustrated embodiment, the electronic lock further comprises a retaining member 4, which is rotatably mounted in the housing 1 and is suitable for rotating between a retaining position and an initial position. When the locking pin 2 is driven to the locking position, the retaining member 4 is driven to the retaining position to retain the locking pin 2 in the locking position by the retaining member 4.

[0053] like Figures 1 to 16 As shown, in the illustrated embodiment, the moving seat 3 is also used to drive the retaining member 4 to rotate between the retaining position and the initial position. When the locking pin 2 is driven to the locking position by the moving seat 3, the retaining member 4 is driven to the retaining position by the moving seat 3.

[0054] like Figures 1 to 16 As shown, in the illustrated embodiment, a locking surface 42 is formed on the retaining member 4, and the movable seat 3 has a locking portion 32. The locking portion 32 is adapted to abut against the locking surface 42 and to slide relative to the locking surface 42, and is used to lock the retaining member 4 in the retaining position. When the distance that the movable seat 3 moves backward relative to the locking pin 2 retained in the locking position is not greater than the second distance D2, the locking portion 32 abuts against the locking surface 42, so that the retaining member 4 is locked in the retaining position and cannot rotate.

[0055] like Fig.13 and Fig.14 As shown, in the illustrated embodiment, when the distance D that the movable seat 3 moves backward relative to the locking pin 2 held in the locked position is greater than the second distance D2, the locking portion 32 disengages from the locking surface 42, so that the retaining member 4 is in a release state capable of rotation, so as to allow the retaining member 4 to be rotated from the retaining position toward the initial position under the drive of the movable seat 3.

[0056] like Figures 1 to 16 As shown, in the illustrated embodiment, the retaining member 4 has a retaining portion 41, which is adapted to abut against the rear end surface of the locking pin 2 to retain the locking pin 2 in the locked position. When the distance that the moving seat 3 moves backward relative to the locking pin 2 retained in the locked position is not greater than the second distance D2, the retaining portion 41 abuts against the rear end surface of the locking pin 2 to retain the locking pin 2 in the locked position.

[0057] like Figures 13 to 16 As shown, in the illustrated embodiment, when the distance D that the moving seat 3 moves backward relative to the locking pin 2 held in the locked position is greater than the second distance D2, the locking portion 32 of the moving seat 3 contacts the retaining portion 41 of the retaining member 4 and pushes the retaining member 4 to rotate from the retaining position toward the initial position.

[0058] like Figures 13 to 16 As shown, in the illustrated embodiment, the retaining member 4 also has a tooth groove 43, and the moving seat 3 also has a tooth portion 33, which is suitable for engaging with the tooth groove 43 to keep the retaining member 4 in the initial position. That is, when the retaining member 4 is rotated to the initial position, the tooth portion 33 engages with the tooth groove 43.

[0059] like Figures 1 to 16 As shown, in the illustrated embodiment, the retaining member 4 is cam-shaped and is rotatably mounted in the housing 1 via a rotating shaft 40, so that the retaining member 4 can rotate around the axis of the rotating shaft 40. The axis of the locking pin 2 extends in the longitudinal direction of the housing 1, and the axis of the rotating shaft 40 extends in the transverse direction of the housing 1, so that the axis of the rotating shaft 40 is perpendicular to the axis of the locking pin 2.

[0060] like Figures 1 to 16As shown, in the illustrated embodiment, the electronic lock also includes a transmission device 6, which is installed in the housing 1 and connected between the motor 5 and the moving seat 3, and is used to convert the rotational motion of the output shaft 51 of the motor 5 into the linear motion of the moving seat 3 to drive the moving seat 3 to move axially along the locking pin 2.

[0061] like Figures 1 to 16 As shown, in the illustrated embodiment, the transmission device 6 includes: a first bevel gear 60, a first rotating shaft 61, a second bevel gear 62, a first spur gear 63, a second rotating shaft 64, a second spur gear 65, a third spur gear 66, a third rotating shaft 67, a fourth spur gear 68 and a fifth spur gear 69. The first bevel gear 60 is mounted on the output shaft 51 of the motor 5. The first rotating shaft 61 is rotatably mounted in the housing 1. The second bevel gear 62 is fixed to one end of the first rotating shaft 61 and meshes with the first bevel gear 60. The first spur gear 63 is fixed to the other end of the first rotating shaft 61. The second rotating shaft 64 is rotatably mounted in the housing 1. The second spur gear 65 is fixed to one end of the second rotating shaft 64 and meshes with the first spur gear 63. The third spur gear 66 is fixed to the other end of the second rotating shaft 64. The third rotating shaft 67 is rotatably mounted in the housing 1. The fourth spur gear 68 is fixed to one end of the third rotating shaft 67 and meshes with the third spur gear 66. The fifth spur gear 69 is fixed to the other end of the third rotating shaft 67. A rack portion 39 is formed on the moving base 3, and the rack portion 39 meshes with the fifth spur gear 69.

[0062] like Figures 1 to 16 As shown, in the illustrated embodiment, the moving seat 3 includes a front end body 3a, a rear end body 3b and a connecting body 3c connected between the front end body 3a and the rear end body 3b. The rear end portion of the locking pin 2 is movably mounted on the front end body 3a of the moving seat 3, and the rack portion 39 is formed on the connecting body 3c of the moving seat 3.

[0063] like Figures 1 to 16 As shown, in the illustrated embodiment, the electronic lock further comprises a pull rope 7, which is connected to the rear end body 3b of the moving seat 3 and led out from the housing 1, so as to allow the locking pin 2 to be reset to the unlocking position by pulling the pull rope 7.

[0064] like Figures 1 to 16 As shown, in the illustrated embodiment, the electronic lock further comprises a rope loop 8 , which is mounted on the housing 1 and is used to guide the pull rope 7 to be led out of the housing 1 .

[0065] like Figures 1 to 16As shown, in another exemplary embodiment of the utility model, a charging base assembly is also disclosed. The charging base assembly includes: a charging base (not shown) and the aforementioned electronic lock. The electronic lock is fixedly mounted on the charging base. When the locking pin 2 of the electronic lock is moved to the locked position, the locking pin 2 engages with the charging gun inserted into the charging base to prevent the charging gun from being pulled out of the charging base. When the locking pin 2 of the electronic lock is moved to the unlocked position, the locking pin 2 is separated from the charging gun inserted into the charging base to allow the charging gun to be pulled out of the charging base.

[0066] Those skilled in the art will appreciate that the embodiments described above are exemplary and can be improved upon by those skilled in the art. The structures described in the various embodiments can be freely combined without causing any conflicts in structure or principle, and these changes should fall within the scope of protection of the present utility model.

[0067] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementation modes of the present invention and should not be construed as limiting the present invention.

[0068] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined by the claims and their equivalents.

[0069] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element number of the claims should not be construed as limiting the scope of the present invention.

Claims

1. An electronic lock for locking a charging gun to a charging base, characterized in that: The electronic lock comprises: The housing (1) is formed with a pin hole (10); a locking pin (2) extending from the housing (1) via the pin hole (10) and adapted to move between a locked position engaged with the charging gun and an unlocked position separated from the charging gun; and A movable seat (3) is movably mounted in the housing (1) and is used to drive the locking pin (2) to move forward to the locking position and to drive the locking pin (2) to move backward to the unlocking position. The locking pin (2) is movably mounted on the movable seat (3) so that the movable seat (3) can move rearwardly a first distance (D1) relative to the locking pin (2) when the locking pin (2) is held in the locked position.

2. The electronic lock according to claim 1, characterized in that: Also includes: a motor (5) mounted in the housing (1) for driving the movable seat (3) to move, so as to drive the locking pin (2) to move between the locking position and the unlocking position via the movable seat (3); When the locking pin (2) is driven to the locking position, the motor (5) is powered off and, under the action of the reverse electromotive force generated when the power is turned off, drives the movable seat (3) to move backward relative to the locking pin (2) by a second distance (D2), wherein the second distance (D2) is not greater than the first distance (D1).

3. The electronic lock according to claim 1, characterized in that: A semi-cylindrical receiving groove (30) is formed on the bottom surface of the movable seat (3), and the rear end portion of the locking pin (2) is movably received in the receiving groove (30); A C-shaped snap ring (31) is formed in the receiving groove (30) of the movable seat (3), a neck (21) is formed on the rear end of the locking pin (2), and the C-shaped snap ring (31) is movably clamped on the neck (21) of the locking pin (2).

4. The electronic lock according to claim 3, characterized in that: The first distance (D1) is equal to the length of the neck (21) of the locking pin (2) in the axial direction of the locking pin (2) minus the thickness of the C-shaped snap ring (31) in the axial direction of the locking pin (2).

5. The electronic lock according to claim 4, characterized in that: The neck portion (21) of the locking pin (2) has a front step surface (21a) and a rear step surface (21b) opposite to each other in its axial direction, and the C-shaped snap ring (31) has a front side surface and a rear side surface opposite to each other in its thickness direction; When the movable seat (3) drives the locking pin (2) to move forward, the front side surface of the C-shaped snap ring (31) abuts against the front step surface (21a) of the neck (21) of the locking pin (2); When the movable seat (3) drives the locking pin (2) to move backward, the rear side surface of the C-shaped snap ring (31) abuts against the rear step surface (21b) of the neck (21) of the locking pin (2).

6. The electronic lock according to claim 2, characterized in that: Also includes: A retaining member (4) is rotatably mounted in the housing (1) and is adapted to rotate between a retaining position and an initial position. When the locking pin (2) is driven to the locking position, the retaining member (4) is driven to the retaining position to retain the locking pin (2) in the locking position by the retaining member (4).

7. The electronic lock according to claim 6, characterized in that: The movable seat (3) is also used to drive the retaining member (4) to rotate between the retaining position and the initial position; When the locking pin (2) is driven to the locking position by the moving seat (3), the retaining member (4) is driven to the retaining position by the moving seat (3).

8. The electronic lock according to claim 7, characterized in that: A locking surface (42) is formed on the retaining member (4), and the movable seat (3) has a locking portion (32). The locking portion (32) is adapted to abut against the locking surface (42) and to slide relative to the locking surface (42) to lock the retaining member (4) in the retaining position. When the distance that the movable seat (3) moves backward relative to the locking pin (2) held in the locking position is not greater than the second distance (D2), the locking portion (32) abuts against the locking surface (42), so that the retaining member (4) is locked in the retaining position.

9. The electronic lock according to claim 8, characterized in that: When the distance (D) that the movable seat (3) moves backward relative to the locking pin (2) held in the locking position is greater than the second distance (D2), the locking portion (32) disengages from the locking surface (42) to allow the retaining member (4) to be rotated from the holding position toward the initial position under the drive of the movable seat (3).

10. The electronic lock according to claim 9, characterized in that: The retaining member (4) has a retaining portion (41), and the retaining portion (41) is suitable for abutting against the rear end surface of the locking pin (2) to retain the locking pin (2) in the locking position; When the distance that the movable seat (3) moves backward relative to the locking pin (2) held in the locking position is not greater than the second distance (D2), the retaining portion (41) abuts against the rear end surface of the locking pin (2) to retain the locking pin (2) in the locking position.

11. The electronic lock according to claim 10, characterized in that: When the distance (D) that the movable seat (3) moves backward relative to the locking pin (2) held in the locking position is greater than the second distance (D2), the locking portion (32) of the movable seat (3) contacts the retaining portion (41) of the retaining member (4) and pushes the retaining member (4) to rotate from the retaining position toward the initial position.

12. The electronic lock according to claim 11, characterized in that: The retaining member (4) further has a tooth groove (43), and the movable seat (3) further has a tooth portion (33). The tooth portion (33) is suitable for engaging with the tooth groove (43) to retain the retaining member (4) in the initial position.

13. The electronic lock according to claim 12, characterized in that: The retaining member (4) is cam-shaped and is rotatably mounted in the housing (1) via a rotating shaft (40), such that the retaining member (4) can rotate around the axis of the rotating shaft (40); The axis of the locking pin (2) extends in the longitudinal direction of the housing (1), and the axis of the rotating shaft (40) extends in the transverse direction of the housing (1), so that the axis of the rotating shaft (40) is perpendicular to the axis of the locking pin (2).

14. The electronic lock according to claim 2, characterized in that: Also includes: A transmission device (6) is installed in the housing (1) and connected between the motor (5) and the movable seat (3), and is used to convert the rotational motion of the output shaft (51) of the motor (5) into the linear motion of the movable seat (3), so as to drive the movable seat (3) to move axially along the locking pin (2).

15. The electronic lock according to claim 14, characterized in that: The transmission device (6) comprises: a first helical gear (60) mounted on the output shaft (51) of the motor (5); A first rotating shaft (61) is rotatably mounted in the housing (1); a second helical gear (62) fixed to one end of the first rotating shaft (61) and meshing with the first helical gear (60); a first spur gear (63) fixed to the other end of the first rotating shaft (61); a second rotating shaft (64) rotatably mounted in the housing (1); a second spur gear (65) fixed to one end of the second rotating shaft (64) and meshing with the first spur gear (63); a third spur gear (66) fixed to the other end of the second rotating shaft (64); a third rotating shaft (67) rotatably mounted in the housing (1); a fourth spur gear (68) fixed to one end of the third rotating shaft (67) and meshing with the third spur gear (66); and The fifth spur gear (69) is fixed to the other end of the third rotating shaft (67). A rack portion (39) is formed on the movable seat (3), and the rack portion (39) is engaged with the fifth spur gear (69).

16. The electronic lock according to claim 15, characterized in that: The movable seat (3) comprises a front end body (3a), a rear end body (3b), and a connecting body (3c) connected between the front end body (3a) and the rear end body (3b); The rear end portion of the locking pin (2) is movably mounted on the front end body (3a) of the movable seat (3), and the rack portion (39) is formed on the connecting body (3c) of the movable seat (3).

17. The electronic lock according to claim 16, characterized in that: Also includes: A pull cord (7) is connected to the rear end body (3b) of the movable seat (3) and is led out from the housing (1) to allow the locking pin (2) to be reset to the unlocked position by pulling the pull cord (7).

18. The electronic lock according to claim 17, characterized in that: Also includes: A rope loop (8) is mounted on the housing (1) and is used to guide the pull rope (7) out of the housing (1).

19. A charging base assembly, characterized in that: include: Charging station; and The electronic lock according to any one of claims 1 to 18, fixedly mounted on the charging base, When the locking pin (2) of the electronic lock is moved to the locking position, the locking pin (2) engages with the charging gun inserted into the charging base to prevent the charging gun from being pulled out of the charging base. When the locking pin (2) of the electronic lock is moved to an unlocking position, the locking pin (2) is separated from the charging gun inserted into the charging seat, allowing the charging gun to be pulled out of the charging seat.

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