Charging interface structure and charging system

Abstract

The utility model discloses a charging interface structure and a charging system, the charging interface structure comprises a housing assembly provided with an accommodating cavity and a charging connector, and a floating plate used for fixing the charging connector is arranged in the accommodating cavity; the shell assembly is provided with a first hole structure, and the charging connector is exposed out of the first hole structure and can move relative to the shell assembly. At least two tension spring assemblies are arranged between the floating plate and the inner wall of the containing cavity, and the tension spring assemblies enable the floating plate not to make contact with the bottom of the containing cavity when the floating plate is not pressed by external force. The charging connector is provided with a guide structure. By adopting the structure, the requirement on the positioning precision of the charging equipment can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging interfaces, in particular to a charging interface structure and a charging system. Background Art

[0002] Automated Guided Vehicle (AGV), also known as automatic guided transporter or automatic guided transporter, is an industrial vehicle that loads goods automatically or manually, drives automatically along a set route or tows a cargo trolley to a designated location, and then loads and unloads goods automatically or manually.

[0003] AGV is an industrial vehicle that uses batteries as its power source and is automatically controlled. There are two main ways to charge AGVs autonomously: wireless induction charging and shrapnel contact charging.

[0004] When using shrapnel contact charging, it uses the shrapnel to directly contact to form a circuit. For example, the "A high-current high-tolerance charging interface" with application number CN202010675163.5 includes two sets of power transmission shrapnel, two POGO spring pins, a steering baffle, a steering shaft, an elastic telescopic rod, etc. The use of shrapnel contact charging has the following problems: When the AGV is charging, it needs to be precisely positioned to achieve reliable contact of the charging contacts, and the positioning accuracy requirements are high. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a charging interface structure and a charging system, which can reduce the requirements for the positioning accuracy of the charging device.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] The first aspect of the utility model provides a charging interface structure, comprising a housing component provided with an accommodating cavity and a charging connector.

[0008] A floating plate for fixing the charging connector is arranged in the accommodating cavity;

[0009] The housing component is provided with a first hole structure, the charging connector is exposed from the first hole structure and can move relative to the housing component;

[0010] At least two tension spring assemblies are arranged between the floating plate and the inner wall of the accommodating cavity, and the tension spring assemblies prevent the floating plate from contacting the bottom of the accommodating cavity when not pressed by an external force;

[0011] A guiding structure is arranged on the charging connector.

[0012] A second aspect of the present invention provides a charging system, comprising a control center and at least one charging interface connected to the control center, wherein the charging interface is a charging interface structure described in the first aspect.

[0013] The utility model has the following advantages:

[0014] In this solution, a guide structure is arranged on the charging connector. In case of inaccurate positioning, the guide structure can provide guidance and drive the charging connector and the floating plate to float. After the plugging is completed, a reliable connection can be achieved under the action of the tension spring assembly. After charging is completed, the tension spring assembly can reset the charging connector to reduce the requirements for positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a three-dimensional diagram of the charging interface structure of the utility model;

[0017] Figure 2 This is a bottom view of the charging interface structure of the utility model;

[0018] Figure 3 It is a top view of the charging interface structure of the utility model;

[0019] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0020] Figure 5 It is a partial cross-sectional view of the charging interface structure of the utility model;

[0021] Figure 6 It is a partial structural schematic diagram of the charging interface structure of the utility model, which includes a charging connector, a floating plate, a tension spring assembly and a part of the housing assembly;

[0022] Figure 7 It is a partial structural schematic diagram of the charging interface structure of the utility model from another angle, which includes a charging connector, a floating plate and a part of the housing component. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1As shown, the first aspect of the utility model provides a charging interface structure, which has a certain floating margin. When the car is charging, charging can be achieved even if the positioning is slightly inaccurate, reducing the positioning accuracy requirements. Of course, the charging interface structure is not only suitable for charging AGV cars, but also for vehicles of the same type, and can even be used for other types of charging devices. The charging devices here are not limited to cars, but can also be other devices, such as charging toys, smart home devices, etc.

[0030] Specifically, Figure 1 As shown, the charging interface structure includes a housing component provided with a receiving cavity, a charging connector 2, a floating plate 3 and a tension spring component 4. The floating plate 3 is placed in the receiving cavity of the housing component and can float in the receiving cavity;

[0031] The housing component is provided with a first hole structure 111 ; the charging connector 2 is fixed on the floating plate 3 and exposed from the first hole structure 111 , and can float along with the floating plate 3 , that is, can move relative to the housing component.

[0032] At least two tension spring assemblies 4 are provided to realize floating support of the floating plate 3. The tension spring assembly 4 makes the floating plate 3 in a suspended state when not pressed by external force, that is, not in contact with the bottom of the accommodating cavity; when pressed by external force, the floating plate 3 moves toward the bottom of the accommodating cavity, and when the external force fails, the tension spring assembly 4 restores the floating plate 3 to a suspended state.

[0033] A guiding structure is provided on the charging connector 2 .

[0034] With the above structure, when the charging device moves toward the charging interface structure for charging in the case of inaccurate positioning, the charging port of the charging device moves under the guidance of the guide structure. At this time, due to inaccurate positioning, the charging connector 2 is driven to move relative to the surface perpendicular to the axial direction of the charging connector during the movement of the charging device, thereby driving the floating plate 3 to float. At this time, the tension spring assembly 4 is stretched. Continue to insert, and the tension spring assembly 4 is stretched until the charging port of the charging device and the charging connector are inserted into place. At this time, the floating plate may be in contact with the bottom of the accommodating cavity, or it may be in a suspended state. At this time, under the action of the spring, the reliable connection between the charging port of the charging device and the charging connector can be guaranteed.

[0035] There are various ways to implement the housing assembly. To facilitate the installation of components such as the charging connector 2, the floating plate 3, and the tension spring assembly 4, the following methods can be used: Figure 2 As shown, the housing assembly includes a first fixing plate 11 and a second fixing plate 12 fixed on the first fixing plate 11, and a receiving cavity is formed between the first fixing plate 11 and the second fixing plate 12. With the above structure, a groove body is provided on the first fixing plate 11, and the second fixing plate 12 is fixed at one end of the groove body to form the receiving cavity.

[0036] There are also many ways to implement the charging connector 2. Figure 1 , 3 As shown in FIGS. 4, 6 and 7, the charging connector 2 includes a charging guide block 21 provided with a guide structure and a charging slot, an insulating fixture 22 provided in the charging slot, and a contact 23 fixed to the insulating fixture 22. The number of contacts 23 is set according to the specific conditions of the charging circuit, and the insulating fixture 22 realizes insulation isolation between the contacts. One end of the contact 23 is exposed in the charging slot, and the other end is connected to the signal line.

[0037] The charging guide block 21 includes a guide end 211 placed outside the shell assembly and a connecting portion 212 for connecting the guide end with the floating plate 3, the guide end is provided with a limiting structure for limiting the guide end from sliding into the first hole structure 111, and the connecting portion is provided with a signal line lead-out hole 2121 for leading out the signal line connected to the contact 23.

[0038] The guide structure is set according to the structure of the charging port of the charging device. If the charging port of the charging device is covered in the charging guide block 21, the guide structure can adopt the structure shown in Figure 6, that is, a guide slope structure is set around the outer side of the end of the charging guide block. If the charging port of the charging device is directly inserted into the charging slot of the charging guide block 21, a guide slope structure can be set around the inner side end of the charging slot of the charging guide block 21. The guide end can be as shown in Figure 6. Figure 4 The configuration shown is a square, of course, it can also be configured as other structures according to specific circumstances, such as a circle, triangle, etc.

[0039] For example, Figure 4 As shown, the guide end is square, and correspondingly, the first hole structure 111 is square;

[0040] To make the guide end floating during insertion, the length / width of the guide end is greater than the length / width of the first hole structure 111 and the length / width of the connecting portion is less than the length / width of the first hole structure 111, so that the guide end can move in a single direction of width / length; or, the guide end is in a direction and the length and width are respectively greater than the length and width of the first hole structure 111 and the length and width of the connecting portion are respectively less than the length and width of the first hole structure 111, so that the guide end can move in multiple directions of width and length. Of course, the second method is preferred.

[0041] The tension spring assembly 4 enables the floating plate 3 to float, and at least two of them are provided. For example, two, three, four or more tension spring assemblies may be provided.

[0042] When there are two tension spring assemblies 4, the two tension spring assemblies 4 can be placed on opposite sides of the floating plate 3. Figure 2 , 6 As shown, when four tension spring assemblies 4 are provided, they include two groups, each with four tension spring assemblies. The two groups of tension spring assemblies 4 are respectively placed on two opposite sides of the floating plate 3 .

[0043] When four tension spring assemblies 4 are used, in order to improve the reliable resetting of the floating plate, each group of tension spring assemblies 4 and the corresponding side of the floating plate 3 form a triangular structure.

[0044] In order to facilitate the lead-out of the signal line, a signal line lead-out groove 31 is provided on the floating plate 3, and a second hole structure 112 for leading out the signal line is provided at a position corresponding to the signal line lead-out groove 31 on the housing component. To this end, in order to further improve the reliability of the connection between the contact and the signal line, a detachable pressing plate 32 is provided on the signal line lead-out groove 31. After the signal line is connected to the contact, it is led out through the signal line lead-out hole 2121, the signal line lead-out groove 31, the pressing plate 32, and then the second hole structure 112.

[0045] In order to facilitate the movement of the floating plate and reduce the friction with the housing assembly, at least one side of the floating plate 3 is provided with a ball receiving groove for receiving the ball 331. Figure 5 As shown, the floating plate is provided with ball receiving grooves on both sides and balls 31 are placed in the ball receiving grooves, and the balls are exposed in the ball receiving grooves. When the floating plate 3 moves up or down, the balls contact the first fixed plate 11 or the second fixed plate 12, reducing the friction resistance when the floating plate moves.

[0046] Based on the above-mentioned charging interface structure, the second aspect of the present invention discloses a charging system, including a control center and at least one charging interface connected to the control center, and the charging interface is a charging interface structure described in the first aspect.

[0047] Specifically, Figure 1 As shown, the control center can be directly placed on the first fixing plate 11, and the signal line can be connected to the control center after being led out through the second hole structure 112. It should be noted that the control center is a prior art, and its circuit structure is a prior art. This solution does not involve improvements, so its specific structure is not described in this solution.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging interface structure, comprising a housing component provided with a receiving cavity and a charging connector (2), characterized in that: A floating plate (3) for fixing the charging connector (2) is arranged in the accommodating cavity; The housing component is provided with a first hole structure (111), the charging connector (2) is exposed from the first hole structure (111) and can move relative to the housing component; At least two tension spring assemblies (4) are arranged between the floating plate (3) and the inner wall of the accommodating cavity, and the tension spring assemblies (4) prevent the floating plate (3) from contacting the bottom of the accommodating cavity when not pressed by an external force; A guiding structure is provided on the charging connector (2).

2. A charging interface structure according to claim 1, characterized in that: The housing assembly comprises a first fixing plate (11) and a second fixing plate (12) fixed to the first fixing plate (11), wherein an accommodating cavity is formed between the first fixing plate (11) and the second fixing plate (12).

3. A charging interface structure according to claim 1, characterized in that: The charging connector (2) comprises a charging guide block (21) provided with a guide structure and a charging slot, an insulating fixing piece (22) provided in the charging slot, and a contact (23) fixed to the insulating fixing piece (22); The charging guide block (21) comprises a guide end (211) disposed outside the housing assembly and a connecting portion (212) for connecting the guide end and a floating plate (3); a limiting structure for limiting the guide end from sliding into the first hole structure (111) is provided on the guide end; and a signal line lead-out hole (2121) for leading out a signal line connected to the contact (23) is provided on the connecting portion.

4. A charging interface structure according to claim 3, characterized in that: There are two tension spring assemblies (4) which are respectively placed on two opposite sides of the floating plate (3).

5. A charging interface structure according to claim 3, characterized in that: There are two groups of tension spring assemblies (4), each group comprising two tension spring assemblies (4), and the two groups of tension spring assemblies (4) are respectively placed on two opposite sides of the floating plate (3).

6. A charging interface structure according to claim 5, characterized in that: Each group of tension spring assemblies (4) and the corresponding side of the floating plate (3) form a triangular structure.

7. A charging interface structure according to claim 1, characterized in that: The floating plate (3) is provided with a signal line lead-out groove (31), and a second hole structure (112) for leading out a signal line is provided at a position on the housing component corresponding to the signal line lead-out groove (31).

8. A charging interface structure according to claim 7, characterized in that: A detachable pressing plate (32) is provided on the signal line lead-out groove (31).

9. A charging interface structure according to claim 1, characterized in that: At least one side of the floating plate (3) is provided with a ball accommodating groove for accommodating a ball (331).

10. A charging system, comprising a control center and at least one charging interface connected to the control center, characterized in that: The charging interface is a charging interface structure as described in any one of claims 1 to 9.

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