CN213167748U

CN213167748U - Flexible arm, flexible connection structure and flexible charging device

Info

Publication number: CN213167748U
Application number: CN202021714703.8U
Authority: CN
Inventors: 何青; 李明; 王晓磊; 李德胜; 郑隽一; 张育铭
Original assignee: Guochuang Mobile Energy Innovation Center Jiangsu Co Ltd
Current assignee: Guochuang Mobile Energy Innovation Center Jiangsu Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-05-11
Anticipated expiration: 2030-08-17

Abstract

The utility model relates to an automobile charging technical field, concretely relates to flexible arm, including bearing portion, bracing piece, movable part and flexonics spare, the bracing piece is one at least, the first end of bracing piece is fixed in bearing portion, the second end of bracing piece pass the movable part and with movable part sliding fit, the movable part is relative bearing portion free activity, bearing portion with the help of the bracing piece bearing the movable part, the first end of flexonics spare is connected bearing portion, flexonics spare's second end is connected the movable part. The utility model provides a pair of flexible arm, the ground is undulant or the tire pressure cross low time self-adaptation vehicle gesture with the vehicle receive the interface and dock and charge, and in charging process, can compensate the displacement that the people got on and off the bus and produced, prevent the joint damage that charges.

Description

Flexible arm, flexible connection structure and flexible charging device

Technical Field

The utility model relates to an automobile charging technology field, concretely relates to flexible arm, flexible connection structure and flexible charging device.

Background

The electric automobile is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor to run, meets various requirements of road traffic and safety regulations, and is widely popularized at present because the influence on the environment is smaller than that of the traditional automobile.

The traditional charging mode of the electric automobile is to adopt the handheld charging gun to be in butt joint with the power receiving interface of the vehicle, but the use is more complicated and has certain potential safety hazard, automatic charging is adopted in many places at present, the charging connector is driven to move through the mobile device, and the power receiving interface is found accurately through the automatic positioning sensor, then the charging connector is in butt joint with the power receiving interface of the vehicle, but in the current charging device, the mobile device is connected with the charging connector through a rigid connecting arm, so that the charging connector and the power receiving interface are also in rigid connection, when the butt joint is carried out, the precision error of the automatic positioning sensor, and some working conditions such as people getting on or off the vehicle, the tire pressure is too low, the power receiving interface of the charging connector and the vehicle can not be in butt joint due to the fluctuation of the road surface.

In addition, in order to increase the charging speed, automatic charging with a large current is required in many occasions at present, sometimes the charging current reaches even more than 1000A, and because the charging current is large, a plurality of charging cables with large outer diameters need to be arranged for current transmission at the same time, but the following problems are brought about: 1. the dead weight of the charging cable causes the cable outlet sagging phenomenon at the rear end of the charging connector, and certain damage can be caused to the cable; 2. many cables need bind together, otherwise can the looks mutual friction take place wearing and tearing, generally adopt the clamp to bind or adopt the fixed cable of metal support at present, and the mode of adopting the clamp to bind, can lead to the cable trend to differ when the joint that charges removes, still can take place wearing and tearing each other, there is certain potential safety hazard, and adopt the metal support to fix and need just fix metal support and casing in advance before the casing equipment of whole product, the cable is in large quantities and leads to metal support's a lot of, and the installation is loaded down with trivial details, work load is big.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the joint that charges among the prior art and rear end mobile device for rigid connection lead to it and receive the interface butt joint difficulty and lead to the fragile technical problem of joint that charges, provided a flexible arm, use this kind of flexible arm can make the joint self-adaptation vehicle gesture that charges with and receive the interface to dock and charge, in the charging process, can compensate the displacement that the people got on the bus and got off the bus and produced simultaneously for the joint that charges is not fragile.

The technical scheme of the utility model:

a flexible arm, comprising:

a bearing part;

at least one supporting rod is arranged, the first end of each supporting rod is fixed on the bearing part, and the second end of each supporting rod penetrates through the movable part and is in sliding fit with the movable part;

the movable part is freely movable relative to the bearing part, and the bearing part bears the movable part by virtue of the supporting rod;

the first end of the flexible connecting piece is connected with the bearing part, and the second end of the flexible connecting piece is connected with the movable part.

The first end of the supporting rod is fixed on the supporting part, and the second end of the supporting rod can support the movable part to prevent the movable part from sagging; secondly, this scheme connects bearing portion and movable part through flexible connectors, prevents that the movable part from breaking away from the bracing piece, and flexible connectors makes the movable part can relative bearing portion free motion simultaneously, for example the movable part can move towards bearing portion removes or is rotatory, and the second end of bracing piece and movable part be sliding fit, do not influence the free motion of movable part. The flexible arm of this scheme can replace traditional rigid link arm of connecting the joint that charges and rear end mobile device, connects the bearing portion and the rear end mobile device of flexible arm, with the movable portion of flexible arm with the joint connection that charges, the joint that charges can the free motion receive the position of interface with the adaptation, so, alright solve the joint that charges among the prior art and receive the interface butt joint not go up and people get on or off the bus and lead to the fragile technical problem of the joint that charges.

Furthermore, the flexible arm further comprises a tensioning piece, the first end of the tensioning piece is relatively fixed to the supporting portion, the second end of the tensioning piece pulls the movable portion, the movable portion is pulled by the tensioning piece, the charging connector and the movable portion are heavy when large-current charging is carried out, and the tensioning piece can tension the charging connector to prevent the charging connector from sagging and bending or even breaking the supporting rod under the influence of the self weight.

Further, flexible connection spare includes first connecting rod, second connecting rod and universal joint, the first end of universal joint is passed through first connecting rod with the bearing portion is connected, the second end of universal joint is passed through the second connecting rod with the movable part is connected, and this scheme sets up the universal joint and makes the motion of movable part more nimble.

The utility model discloses an on the other hand provides a flexible connection structure, include:

at least one flexible arm as described in any one of the above;

the support frame is connected with a charging connector by means of at least one flexible arm;

a charging joint that moves along with the movable portion.

Set up above-mentioned flexible arm between support frame and the joint that charges, alright realize the joint that charges and receive the flexonics of interface, the butt joint is accurate and can not damage the joint that charges.

Optionally, in the flexible connection structure of this scheme, flexible connection structure still includes spacing skeleton, spacing skeleton with the support frame is connected, just the periphery of spacing skeleton upwards is equipped with a plurality of bayonet sockets, because there is the charging cable and often is many when the heavy current charges between support frame and the joint that charges, this scheme is spacing to many cables respectively through setting up a plurality of bayonet sockets on first spacing skeleton, separates many cables, just can not take place the condition that mutual friction leads to insulating skin damage between the cable.

Optionally, in the flexible connection structure of this scheme, flexible arm is two, and is first the movable part of flexible arm forms the second the bearing portion of flexible arm, like this, set up two flexible arms between support frame and the joint that charges for the motion of the joint that charges is more nimble, and rotationally the angle is bigger, is convenient for more dock with receiving the electric interface.

The utility model discloses a still another aspect provides a flexible charging device, include:

a flexible connection as claimed in any one of the above;

the mount, slidable mounting has the sliding assembly on the mount, the sliding assembly with the support frame of flexible connection structure is connected, and like this, sliding assembly alright take flexible connection structure to go with the butt joint of receiving the electrical connector.

Further, flexible charging device still includes the motor, the casing of motor with it is fixed that sliding assembly is fixed, be connected with the gear on the output shaft of motor, dispose on the mount with gear complex rack realizes flexible connection structure's removal through the cooperation of motor and gear and rack.

Further, the sliding assembly includes:

the supporting plate is fixedly provided with a supporting shaft, and the supporting shaft is movably connected with the supporting frame;

the two at least extension springs are symmetrically arranged on two sides of the supporting shaft, one ends of the two extension springs are fixed to the supporting plate, and the other ends of the two extension springs are fixedly connected with the supporting frame.

The support shaft is movably connected with the support frame, so that the connecting structure can rotate around the support shaft, and before the charging connector is in butt joint with the power receiving interface, the support frame is pulled by two tension springs symmetrically arranged along the support shaft at two sides of the support shaft, so that the connecting structure maintains the original position; when the charging connector is in butt joint with the power receiving interface, the two tension springs can deform differently so that the connecting structure rotates for a certain angle around the supporting shaft, and errors caused by different vehicle conditions are made up to a certain extent.

Furthermore, still fixedly connected with tow chain in the backup pad, the configuration in the tow chain the cable of joint charges, above-mentioned connection structure is at the removal in-process, and the cable of joint rear end that charges also can follow connection structure motion, and the tow chain can play the effect of protection to this rear end cable.

After the technical scheme is adopted, compared with the prior art, the utility model, have following beneficial effect: the utility model supports the movable part through the supporting rod to prevent the movable part from sagging; secondly, the utility model discloses a flexonics spare connects bearing portion and movable part, prevents that the movable part from breaking away from the bracing piece, and flexonics spare makes movable part bearing portion free motion relatively simultaneously. The utility model discloses a flexible arm fungible traditional rigid connection arm who connects joint and rear end mobile device that charges connects the bearing portion and the rear end mobile device of flexible arm and connects, with the movable part of flexible arm with the articulate that charges, the joint that charges can the free motion receive the position of interface with the adaptation, so, alright solve the joint that charges among the prior art and receive the interface butt joint not go up and when charging the people get on or off the bus and lead to the fragile technical problem of the joint that charges.

Drawings

FIG. 1 is a schematic structural diagram of a flexible arm according to a first embodiment;

FIG. 2 is a schematic structural diagram of a flexible arm according to a second embodiment;

FIG. 3 is a schematic structural view of a flexible connection structure (without a cable) according to a third embodiment;

FIG. 4 is a schematic structural view of a flexible connection structure (a ribbon cable) according to a third embodiment;

FIG. 5 is a schematic structural view of another embodiment of a flexible connection structure according to example III;

FIG. 6 is a schematic structural view of a flexible connecting structure according to a fourth embodiment;

FIG. 7 is a sectional view of a flexible connection structure according to the fourth embodiment;

FIG. 8 is a schematic structural view of a flexible connecting structure (with a flexible cover) according to a fourth embodiment;

fig. 9 is a front view of the flexible charging device of the fifth embodiment;

fig. 10 is a sectional view of the flexible charging device of the fifth embodiment;

fig. 11 is a top view of the flexible charging device of example five;

fig. 12 is a side view of the flexible charging device of the fifth embodiment.

Wherein,

the supporting part 11, the supporting rod 12, the movable part 13, the flexible connecting part 14, the first connecting rod 141, the second connecting rod 142, the universal joint 143, the tension piece 15, the first tension piece 151 and the second tension piece 152;

the device comprises a support frame 2, a limiting framework 21, a bayonet 211, a fixing rod 212, a bearing framework 22, a cable 23 and a flexible shell 24;

a charging connector 31, a charging connection port 311, a crimping piece 312, a guide surface 313 and an analog interface 33;

a supporting plate 41, a supporting shaft 42, a tension spring 43, a fixing plate 44, a supporting plate 45, a supporting piece 46, a fixing piece 47, a dragging piece 48 and a drag chain 49;

the device comprises a fixed frame 5, a seat body 51, a sliding sleeve 52, a sliding frame 53, a motor 54, a gear 55, a rack 56 and a guide rail 57.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The utility model aims at replacing the rigid connection arm who connects joint and rear end mobile device that charges among the prior art through a flexible arm to solve the joint that charges among the prior art and receive the interface butt joint difficulty and easily lead to the technical problem that the joint damaged that charges.

The first embodiment is as follows:

as shown in fig. 1, the flexible arm of this embodiment includes a supporting portion 11, a supporting rod 12 and a movable portion 13, the supporting portion 11 supports the movable portion 13 through the supporting rod 12, the supporting portion 11 of this embodiment is formed on the supporting frame 2, the movable portion 13 is located at a first end of the charging connector 31, the first end of the supporting rod 12 is fixed to the supporting portion 11, and a second end of the supporting rod 12 passes through the movable portion 13 and is in sliding fit with the movable portion 13; specifically, the first end accessible threaded connection mode of bracing piece 12 and the support portion 11 fixed connection on support frame 2, the movable part 13 with charge joint 31 components of a whole that can function independently assembly, fix the movable part 13 at the first end of the joint 31 that charges, charge joint 31 like this and can follow the motion of movable part 13, and movable part 13 offers the opening that holds bracing piece 12 and pass, bracing piece 12 can stretch into along this opening and charge inside the joint 31 in order to slide. In this embodiment, the first end of the supporting rod 12 is fixed to the supporting portion 11, and the second end of the supporting rod 12 can support the movable portion 13, so as to prevent the supporting portion 11 from sagging, and the number of the supporting rods 12 can be set according to actual requirements.

Further, the present embodiment connects the supporting portion 11 and the movable portion 13 through the flexible connecting member 14, the first end of the flexible connecting member 14 is connected to the supporting portion 11, and the second end of the flexible connecting member 14 is connected to the movable portion 13, specifically, as shown in fig. 1, the flexible connecting member 14 of the present embodiment includes a first connecting rod 141, a second connecting rod 142 and a universal joint 143, the first end of the universal joint 143 is connected to the supporting portion 11 through the first connecting rod 141, the first connecting rod 141 is optionally but not limited to flange connected to the supporting portion 11, the second end of the universal joint 143 is connected to the movable portion 13 through the second connecting rod 142, the second connecting rod 142 is optionally but not limited to flange connected to the movable portion 13, so that the supporting portion 11 and the movable portion 13 can be connected to prevent the movable portion 13 from being separated from the supporting rod 12, and the universal joint 143 enables the movable portion 13 to freely move relative to the supporting portion 11, for example, the movable portion 13 can move or rotate towards the supporting portion, and because the second end of the supporting rod 12 is in sliding fit with the movable part 13, the supporting rod 12 is not subjected to axial force, and the free movement of the movable part 13 is not influenced. In this way, when the charging connector 31 of the present embodiment is docked with the power receiving interface, the charging connector 31 may move freely to adapt to the power receiving interface in different positions.

In other embodiments, the flexible connection 14 may be a spring or an elastic rod, but it is not as effective as a universal joint, which allows the free movement of the movable part to be more flexible and the rotation angle to be larger.

Further, the support rod 12 of this embodiment is preferably a carbon fiber rod, which has high strength and certain toughness, can be deformed in a bending manner to a certain extent without affecting the rotation of the charging connector 31, and can be rapidly restored to its original state after the charging connector 31 and the power receiving interface are separated. It should be reminded that the length of the supporting rod 12 needs to be set according to the rotation angle of the charging connector 31, so as to prevent the supporting rod 12 from slipping off from the movable portion 13 due to insufficient length.

Preferably, as shown in fig. 1, the outer edge of the second end of the charging connector 31 of the present embodiment is further provided with a guide surface 313, and the guide surface 313 is in contact with the power receiving interface for alignment in advance, so that the posture of the charging connector 31 is adjusted to be in butt joint with the power receiving interface conveniently.

As can be seen from the above, the flexible arm provided in this embodiment can replace the conventional rigid connection arm for connecting the charging connector and the rear-end mobile device, the supporting portion 11 of the flexible arm is connected with the rear-end mobile device through the supporting frame 2, the movable portion 13 is fixedly connected with the first end of the charging connector 31, and the charging connector 31 can move freely to adapt to the position of the power receiving interface; and in the charging process after normal butt joint, when the circumstances such as people getting on or off the bus lead to the vehicle to take place the displacement, also can compensate this displacement by bracing piece 12 and universal joint 143, avoided the damage of the joint 31 that charges, solved the joint that charges among the prior art and received the power interface butt joint not go up and charge the fragile technical problem of joint.

Example two:

as shown in fig. 2, the flexible arm of the present embodiment is different from the first embodiment in that a tension member 15 is further disposed between the support portion 11 and the movable portion 13, the tension member 15 is selected but not limited to a tension spring, a first end of the tension member 15 is directly or indirectly fixed to the support portion 11 on the support frame 2, a second end of the tension member 15 pulls the movable portion 13, the charging connector 31 is heavier when a large current is charged, the movable portion 13 connected to the charging connector 31 is easy to sag, and the tension member 15 can pull the charging connector 31 tightly, so that an axial center line of the support frame 2 and an axial center line of the charging connector 31 are on the same straight line, and the charging connector 31 is prevented from sagging and bending or even breaking the support rod 12 under the influence of self.

Example three:

as shown in fig. 3 to 4, the flexible connection structure of the present embodiment includes the flexible arm of the second embodiment, and further includes a limiting framework 21 and a cable 23, the limiting framework 21 is fixedly connected to the support frame 2 through a fixing rod 212, the support rod 12 passes through and supports the limiting framework 21, one end of the cable 23 is connected to the charging pile, and the other end of the cable 23 is connected to the charging connector 31.

When a large current is charged, considering the current carrying, the outer diameter, the turning radius and the like of the cable, the cable is generally designed to be a plurality of cables, nine cables are adopted in the flexible connection structure of this embodiment, the cables are four DC + cables, four DC-cables and one PE cable, as shown in fig. 4, one end of the support frame 2 is open, the cable 23 enters from the open end and passes through the other end of the support frame 2 to the charging connector 31, a communication port is opened at a first end of the charging connector 31, the cable 23 can pass through the charging connector 31, as shown in fig. 5, a compression member 312 is fixed inside a second end of the charging connector 31, before the compression member 312 is fixed inside the charging connector 31, the cable 23 and the compression member 312 can be compressed, and simultaneously, a right end of the compression member 312 is formed as a charging connection port 311 to be connected with a.

Because the weight of cable is heavier for charge joint 31 is flagging more easily, through setting up the parameter of taut 15 in order to pull charge joint 31 better in this embodiment.

Further, as shown in fig. 3 to 4, because the number of cables of this embodiment is large, nine bayonets 211 are formed in the periphery of the limiting frame 21, each bayonet 211 is used for clamping one cable 23, and the nine cables 23 are separated, so that when the charging connector 31 moves, the situation that the cables 23 rub against each other to damage the insulating sheath does not occur. Of course, nine communication ports may be similarly disposed at the first end of the charging connector 31, so as to further separate the nine cables 23 in the charging connector 31. In addition, because the cable 23 can be arched or stretched during the rotation and movement of the charging connector, a certain length of cable between the support frame 2 and the charging connector 31 needs to be reserved.

As shown in fig. 5, as another embodiment of the present embodiment, the first end of the tension member 15 may be fixedly connected to the restricting frame 21, and similarly, the first end of the support rod 12 may be fixedly connected to the restricting frame 21.

Example four:

the flexible connection structure of the present embodiment includes two flexible arms, the support frame 2 connects the charging connector 31 by means of the two flexible arms, as shown in fig. 6-7, the support portion of the first flexible arm and the support frame 2 are relatively fixed, and the movable portion of the first flexible arm is formed as the support portion of the second flexible arm, and the movable portion of the second flexible arm is connected to the charging connector 31, specifically, the support portion of the first flexible arm is a limiting framework 21, the limiting framework 21 is fixedly connected to the support frame 2, and the first end of the support rod of the first flexible arm is fixedly connected to the limiting framework 21, and meanwhile, the movable portion of the first flexible arm is a support framework 22, and the second end of the support rod of the first flexible arm slides in the support framework 22; this bearing skeleton 22 is the bearing portion of the flexible arm of second simultaneously, and the movable part of the flexible arm of second is fixed with the first end of the joint 31 that charges, the first end and the bearing skeleton 22 fixed connection of the bracing piece of the flexible arm of second, and the second end of the bracing piece of the flexible arm of second can slide in the first end of the joint 31 that charges.

Further, as shown in fig. 7, two tensioning members are provided in the present embodiment corresponding to the two flexible arms, namely, the first tensioning member 151 and the second tensioning member 152, specifically, the first tensioning member 151 is provided between the limiting framework 21 and the supporting framework 22, the second tensioning member 152 is provided between the supporting framework 22 and the charging connector 31, the movable portions of the two flexible arms are tensioned respectively, so as to prevent the two flexible arms from sagging and prevent the cable between the support frame 2 and the charging connector 31 from being excessively bent.

Preferably, the periphery of the supporting framework 22 is also provided with a bayonet clamping cable upwards.

It should be noted that the second end of the support rod of the first flexible arm passes through the support framework 22 and can freely slide, the second end of the support rod of the second flexible arm passes through the first end of the charging connector 31 and can also freely slide, and the lengths of the support rods of the two flexible arms need to be set according to actual needs, so that the support rods are prevented from slipping from the movable parts of the corresponding flexible arms.

Further, as shown in fig. 8, the flexible connection structure of the present embodiment further includes a flexible housing 24, and the flexible housing 24 is disposed between the support frame 2 and the charging connector 31, so as to protect the cable therebetween.

As can be seen from the above, in the embodiment, the two flexible arms are arranged between the support frame 2 and the charging connector 31, so that the charging connector 31 moves more flexibly, can rotate at a larger angle, and is more convenient to be docked with the power receiving interface; simultaneously because single flexible arm can only make the joint 31 that charges rotate, when docking with the power receiving interface, insert to dock to one side, and need charge under some car conditions the joint 31 and just face the power receiving interface and insert and dock, this problem can be solved through setting up two flexible arms to this embodiment.

Example five:

as shown in fig. 9 to 11, the flexible charging device of this embodiment includes the flexible connection structure of the fourth embodiment, and further includes a fixed frame 5, a guide rail 57 is fixed on the fixed frame 5, a sliding assembly is slidably mounted on the guide rail 57, and the sliding assembly is connected to the support frame 2, so that the sliding assembly can drive the flexible connection structure of the fourth embodiment to be in butt joint with the power receiving interface, specifically, two symmetrical seat bodies 51 are arranged on the fixed frame 5, a guide rail 57 is fixed on each seat body 51, and a sliding sleeve 52 is sleeved on each guide rail 57, and the sliding sleeve 52 is fixedly connected to the sliding assembly, so that the sliding assembly can slide along the length direction of the guide rail 57.

Further, as shown in fig. 9 and 11, the sliding assembly of the present embodiment includes a supporting plate 41 and at least two tension springs 43, and a supporting shaft 42 is fixed on the supporting plate 41, and the supporting shaft 42 is movably connected with the supporting frame 2, which may be hinged, so that the supporting frame 2 and the whole flexible connection structure can rotate around the supporting shaft 42; secondly, two extension springs 43 are symmetrically arranged on two sides of the supporting shaft 42, one ends of the two extension springs 43 are fixed on the supporting plate 41 through fixing parts 47, and the other ends of the two extension springs 43 are fixedly connected with the supporting frame 2. Thus, before the charging connector 31 is connected with the analog interface 33 in fig. 8, the two tension springs 43 symmetrically arranged along the supporting shaft 42 pull the supporting frame 2 on both sides of the supporting shaft 42, so that the flexible connecting structure maintains the original position; when the charging connector 31 is in butt joint with the simulation interface 33, the two tension springs 43 can be deformed differently so that the connecting structure rotates around the supporting shaft 42 by a certain angle, specifically by 30 degrees, and errors caused by vehicle conditions are compensated to a certain extent, so that the charging connector 31 is in butt joint with the simulation interface 33 conveniently.

Further, in the present embodiment, the sliding assembly and the flexible connection structure are driven to move by a driving assembly, the driving assembly is a motor 54, specifically, as shown in fig. 11 to 12, a sliding frame 53 fixed with the sliding sleeve 52 is disposed between the symmetrically disposed seat bodies 51, a housing of the motor 54 is fixed in the sliding frame 53, a gear 55 is connected to an output shaft of the motor 54, and a rack 56 is correspondingly disposed on the top surface of the fixed frame 5, so that the sliding frame 53 and the sliding sleeve 52 can slide along the length direction of the guide rail 57 by the cooperation of the gear 55 and the rack 56. Further, the sliding frame 53 is fixedly connected to the support plate 41 of the sliding assembly, so that the sliding frame 53 carries the entire sliding assembly and the flexible connection structure.

Because the number of cables is large and heavy, the guide rails 57 may be bent, as shown in fig. 11-12, two guide rails 57 are respectively fixed on the side of each seat body 51 of the present embodiment, and two sliding sleeves 52 are sleeved on each guide rail 57, so that a total of four guide rails and eight sliding sleeves are provided to distribute the gravity to the four guide rails, thereby preventing the guide rails from being bent.

Further, the sliding assembly of the present embodiment further includes a supporting plate 45, the supporting plate 45 supports the cable 23, specifically, as shown in fig. 9, a supporting member 46 is fixed on the supporting plate 41, the supporting plate 45 is fixed at the middle of the supporting member 46, the cable of the charging connector 31 at the rear end of the supporting frame 2 is more and heavier, the supporting plate 45 can support the cable, so as to prevent the cable from being damaged due to bending, and at the same time, a fixing plate 44 is fixed on the supporting member 46, and the fixing plate 44 is fixedly connected to the supporting shaft 42, so as to further fix the supporting shaft 42.

Further, as shown in fig. 9-10, the supporting plate 41 of this embodiment is further fixedly connected with a drag chain 49 through a drag piece 48, a cable is sequentially inserted into the drag chain 49, during the moving process of the charging connector 31, the cable at the rear end of the supporting frame 2 will also move along with the charging connector 31, and the drag chain 49 can protect and guide the cable at the rear end.

It should be noted that in this embodiment, the bottom of the fixing frame 5 is provided with the roller to simulate the actual motion condition, and the simulation interface 33 is also a power receiving interface of the simulated automobile, but in the actual application, the fixing frame 5 does not have the roller and is directly fixed on the motion mechanism of the ground unit, the motion mechanism drives the device to perform initial positioning, and then the flexible connection structure compensates for the positioning accuracy error or the error caused by the automobile condition to perform docking charging; the moving mechanism of the floor unit may be the robot disclosed in the invention entitled "method, system and apparatus for detecting and processing abnormal starting-up of a chassis robot" under the designation "201910578617.4".

Therefore, the flexible charging device provided by the embodiment can make up errors caused by positioning precision errors or vehicle conditions, realizes automatic charging, and can fully protect cables.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A flexible arm, comprising:

a support part (11);

at least one supporting rod (12), wherein the first end of each supporting rod (12) is fixed on the bearing part (11), and the second end of each supporting rod (12) penetrates through the movable part (13) and is in sliding fit with the movable part (13);

the movable part (13), the said movable part (13) is free to move relative to the said supporting part (11), the said supporting part (11) supports the said movable part (13) with the help of the said strut bar (12);

the first end of the flexible connecting piece (14) is connected with the bearing part (11), and the second end of the flexible connecting piece (14) is connected with the movable part (13).

2. A flexible arm according to claim 1, characterized in that it further comprises a tension member (15), a first end of said tension member (15) being fixed with respect to said support (11), a second end of said tension member (15) pulling said mobile portion (13).

3. A flexible arm according to claim 1, characterized in that the flexible connection (14) comprises a first link (141), a second link (142) and a universal joint (143), a first end of the universal joint (143) being connected to the bearing (11) by means of the first link (141), and a second end of the universal joint (143) being connected to the mobile part (13) by means of the second link (142).

4. A flexible connection structure, comprising:

at least one flexible arm according to any one of claims 1-3;

the supporting frame (2) is connected with a charging connector (31) through at least one flexible arm, and the supporting frame (2) is connected with the charging connector (31) through the flexible arm;

a charging joint (31), the charging joint (31) moving along with the movable part (13).

5. The flexible connection structure of claim 4, further comprising a limiting framework (21), wherein the limiting framework (21) is connected with the support frame (2), and a plurality of bayonets (211) are arranged on the periphery of the limiting framework (21) in an upward direction.

6. A flexible connection according to claim 4, wherein there are two flexible arms, the active portion of a first of said flexible arms forming a bearing portion for a second of said flexible arms.

7. A flexible charging device, comprising:

the flexible connecting structure of any one of claims 4-6;

the fixing frame (5), slidable mounting has the sliding assembly on fixing frame (5), the sliding assembly with flexible connection structure's support frame (2) are connected.

8. The flexible charging device according to claim 7, further comprising a motor (54), wherein the housing of the motor (54) is fixed to the sliding assembly, a gear (55) is connected to an output shaft of the motor (54), and a rack (56) matched with the gear (55) is configured on the fixed frame (5).

9. The flexible charging apparatus of claim 7, wherein the sliding assembly comprises:

the supporting plate (41), a supporting shaft (42) is fixed on the supporting plate (41), and the supporting shaft (42) is movably connected with the supporting frame (2);

at least two extension springs (43), two extension spring (43) symmetry sets up the both sides of back shaft (42), two the one end of extension spring (43) all is fixed on backup pad (41), two the other one end of extension spring (43) all with support frame (2) fixed connection.

10. The flexible charging device according to claim 9, wherein a drag chain (49) is further fixedly connected to the supporting plate (41), and a cable of the charging connector (31) is arranged in the drag chain (49).