Charging docking device

Abstract

The present invention discloses a charging docking device belonging to the technical field of charging equipment, including a charging gun assembly and a grabbing assembly. The charging gun assembly includes a charging gun body and a docking structure. The charging gun body and the docking structure are connected. The grabbing assembly includes a mounting plate, a docking sleeve and a rotating shaft. The docking sleeve is installed on the mounting plate, and a part of the rotating shaft is installed in the docking sleeve. The beneficial effect is that the charging gun is clamped by combining the docking sleeve and the rotating shaft, which is more convenient and safer than manual picking. It is equipped with a variety of guide structures to ensure the accuracy of the alignment process. At the same time, the charging docking device avoids the occurrence of mechanical overload and failure, and improves the reliability of the locking process.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging equipment, and more specifically, the present invention relates to a charging docking device. Background Art

[0002] Today's electric vehicles require a charging gun when charging. There are currently two ways to use a charging gun for charging: 1. Manually holding the charging gun to connect to the power supply for charging. Manually holding the charging gun not only wastes labor costs, but also manual operation may be non-standard due to different operators, resulting in safety risks during high-power charging.

[0003] 2. China's public patent document, CN109466356A discloses an automatic gun gripping mechanism and an automatic charging device. The application document requires that the positioning hole and the positioning pin be inserted at the same time to ensure successful positioning, that is, there is a problem of over-positioning, which will cause the fit to be stuck. The gripping plate and the gripping gun body are connected by cylindrical pins. The gripping force during the gripping process cannot be stably controlled. When the gripping force is insufficient, the clamping mechanism and the gripping gun mechanism will slide relative to each other. When the gripping force is too large, it will cause damage to the parts. It can be seen that the automatic charging devices currently on the market are not accurately positioned, cannot accurately clamp the charging gun, and the device may be overloaded and lose power. Summary of the Invention

[0004] The purpose of the present invention is to provide a charging docking device to solve the technical problems existing in the above-mentioned prior art.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0006] A charging docking device includes a charging gun assembly and a grabbing assembly. The charging gun assembly includes a charging gun body and a docking structure. The charging gun body and the docking structure are connected. The grabbing assembly includes a mounting plate, a docking sleeve and a rotating shaft. The docking sleeve is mounted on the mounting plate, and a portion of the rotating shaft is mounted in the docking sleeve.

[0007] Preferably, the docking structure includes a docking joint and a limiting sliding shaft, the docking joint is provided with an outer conical surface, and a portion of the limiting sliding shaft is installed in the docking joint.

[0008] Preferably, the docking joint comprises a first notch, a second notch and a round head screw pin, the round head screw pin is installed in the first notch, and the first notch and the second notch are located at the same end of the docking joint.

[0009] Preferably, one end of the limiting sliding shaft includes a groove body, a sliding shaft chamfer and a first pin hole group, the sliding shaft chamfer is arranged on one side of the groove body, the first pin hole group is arranged on the other side of the groove body, the first pin hole group is installed in the docking joint, the groove body and the sliding shaft chamfer are both installed outside the docking joint, and the other end of the limiting sliding shaft is provided with a first screw hole group.

[0010] Preferably, the docking structure also includes a spring, a limit plate and a positioning pin. The spring is installed between the docking head and the limit sliding shaft. The limit plate is installed at one end of the limit sliding shaft. A circular hole is provided in the center of the limit plate. The circular hole fixes the limit plate to the limit sliding shaft by a screw. The positioning pin is installed on the limit sliding shaft.

[0011] Preferably, an inner conical surface is provided on one end of the docking sleeve, and a guide notch is provided on the inner conical surface. The other end of the docking sleeve is vertically connected to the mounting plate, and a second screw hole group and a limit pin are provided on the same side, and the limit pin is installed in the second screw hole group.

[0012] Preferably, a cavity and a shaft chamfer are provided at one end of the shaft, a second pin hole group is provided next to the shaft chamfer, and a third screw hole group and a shaft extension are provided at the other end of the shaft.

[0013] Preferably, the grabbing assembly further comprises a locking pin and a rotating baffle, wherein the rotating baffle is mounted on the third screw hole group of the rotating shaft, and the locking pin is mounted on the second pin hole group.

[0014] Preferably, the rotating baffle comprises a main body portion and a raised portion, the main body portion and the raised portion are connected, the main body portion is annular, and a circular hole is provided at the center of the main body portion.

[0015] Preferably, the gripping assembly further includes a camera component, a motor, an angle sensor component and a synchronous wheel component. The camera component, the motor and the angle sensor component are all arranged on the mounting plate, and the synchronous wheel component is respectively connected to the rotating shaft, the angle sensor component and the motor.

[0016] Preferably, the grabbing assembly further includes a synchronous belt and a tensioning block, and the tensioning block is mounted on the mounting plate for tensioning the synchronous belt.

[0017] Preferably, the tensioning block includes a cantilever shaft and an idler wheel, the idler wheel is rotatably mounted on the cantilever shaft, and the idler wheel is in close contact with the synchronous belt.

[0018] The beneficial effects provided by the present invention are:

[0019] 1. The present invention discloses a charging gun assembly and a gripping assembly, which clamps the charging gun by combining a docking sleeve and a rotating shaft, which is more convenient and safer than manual picking.

[0020] 2. The present invention discloses a butt joint with an outer conical surface and an inner conical surface on one end of the butt sleeve, which enables the butt joint to slide smoothly into the butt sleeve, ensuring that the butt sleeve and the butt joint are stably matched together. The guide notch plays a guiding role and accurately positions, ensuring that the limit sliding shaft can smoothly match with the rotating shaft.

[0021] 3. The present invention discloses a docking structure which also includes a spring, a limit plate and a positioning pin. The spring is installed between the docking joint and the limit sliding shaft, and the limit plate is installed at one end of the limit sliding shaft. When the force during the docking and locking process of the charging gun assembly and the grabbing assembly exceeds a certain value, the limit sliding shaft will move axially relative to the docking joint, so that the locking force of the charging gun assembly and the grabbing assembly is consistent with the force of the spring, thereby avoiding the occurrence of mechanical limit overload and the risk of the locking force disappearing after the motor stops. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0023] Figure 1 is a schematic diagram of the charging docking device;

[0024] Figure 2 It is a partial schematic diagram of the rotating shaft and the docking sleeve;

[0025] Figure 3 This is a schematic diagram of the butt joint;

[0026] Figure 4 is a schematic diagram of the docking structure;

[0027] Figure 5 It is a structural diagram of the limited sliding shaft;

[0028] Figure 6 This is another structural diagram of the limited sliding shaft;

[0029] Figure 7 It is a schematic diagram of the docking sleeve;

[0030] Figure 8 is a schematic diagram of the rotating shaft;

[0031] Figure 9 is a schematic diagram of the grab component.

[0032] The main component symbols are as follows: 100, charging gun assembly; 200, grab assembly; 1, charging gun body; 2, docking connector; 201, first notch; 202, second notch; 203, outer conical surface; 3, limit sliding shaft; 301, slot body;

[0033] 302, chamfer of sliding shaft; 303, first pin hole group; 4, docking sleeve; 401, guide notch; 402, inner conical surface; 5, camera component; 6, motor; 7, angle sensor component; 8, mounting plate; 9, round head screw tail pin; 10, positioning pin; 11, spring; 12, limit plate; 13, screw; 14, rotating shaft; 1401, second pin hole group; 1402, third screw hole group; 1403, shaft extension; 1404, cavity; 1405, chamfer of rotating shaft; 15, limit pin; 16, rotating block; 17, locking pin; 18, first synchronous wheel; 19, idler wheel; 20, second synchronous wheel; 21, cantilever shaft; 22, synchronous belt, 23, third synchronous wheel; 24, tensioning block. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] 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 invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0036] like Figure 1 and Figure 2 As shown, a charging docking device includes a charging gun assembly 100 and a grab assembly 200. The charging gun assembly 100 includes a charging gun body 1 and a docking structure. The charging gun body 1 and the docking structure are connected. The grab assembly 200 includes a mounting plate 8, a docking sleeve 4 and a rotating shaft 14. The docking sleeve 4 is installed on the mounting plate 8, and the docking sleeve 4 and the mounting plate 8 are perpendicular to each other. The mounting plate 8 is flat, and a portion of the rotating shaft 14 is installed in the docking sleeve 4.

[0037] like Figures 3 to 6As shown, the docking structure includes a docking joint 2 and a limiting sliding shaft 3. An outer conical surface 203 is provided on the docking joint 2. A part of the limiting sliding shaft 3 is installed in the docking joint 2. The docking joint 2 includes a first notch 201, a second notch 202 and a round head screw tail pin 9. The round head screw tail pin 9 is installed in the first notch 201. The round head screw tail pin 9 and the limiting sliding shaft 3 in the docking joint 2 do not contact. The first notch 201 and the second notch 202 are located at the same end of the docking joint 2.

[0038] The docking structure also includes a spring 11, a limit plate 12 and a positioning pin 10. The spring 11 is installed between the docking joint 2 and the limit sliding shaft 3. The limit plate 12 is installed at one end of the limit sliding shaft 3. A circular hole is provided in the center of the limit plate 12. The circular hole fixes the limit plate 12 to the limit sliding shaft 3 through a screw 13. The positioning pin 10 is installed on the limit sliding shaft 3. Gaps are retained on the upper, lower and right sides of the docking joint 2 and the limit plate 12. The limit sliding shaft 3 can only move within the gap range.

[0039] One end of the limiting slide 3 includes a slot 301, a slide chamfer 302, and a first pin hole group 303. The slide chamfer 302 is arranged on one side of the slot 301, and the first pin hole group 303 is arranged on the other side of the slot 301. Specifically, the slide chamfer 302 is arranged on the right side of the slot 301, and the first pin hole group 303 is arranged on the left side of the slot 301. The first pin hole group 303 is installed in the docking head 2. The slot 301 and the slide chamfer 302 are both installed outside the docking head 2. The slide chamfer 302 is used to assist in positioning. The other end of the limiting slide 3 is provided with a first screw hole group for installing screws 13, which fix the limiting plate 12 to the limiting slide 3. The positioning pin 10 is installed in the first pin hole group 303 of the limiting slide 3. At the same time, the positioning pin 10 is inserted into the second slot 202 of the docking head 2, so that the limiting slide 3 can only move axially relative to the docking head 2. When the force during the docking process of the charging gun assembly 100 and the grab assembly 200 exceeds a certain value, the limiting slide shaft 3 will move axially relative to the docking head 2, so that the locking force of the charging gun assembly 100 and the grab assembly 200 and the force of the spring 11 remain consistent, avoiding the occurrence of mechanical limit overload.

[0040] like Figure 5 As shown, as an optional method of this embodiment, the groove body 301 of the limiting sliding shaft 3 is arc-shaped, and a notch is opened on one side of the arc-shaped groove body 301. The notch is L-shaped and is used to dock the grabbing component 200. Figure 6 As shown, as another optional method of this embodiment, the groove body 301 of the limiting sliding shaft 3 is annular, and a notch is opened on one side of the annular groove body 301, and the notch is used to dock with the grabbing component 200.

[0041] like Figure 7As shown, one end of the docking sleeve 4 is provided with an inner conical surface 402, which is provided with a guide notch 401. The guide notch 401 is shaped like a bell mouth. During the docking process between the gripping assembly 200 and the charging gun assembly 100, the outer conical surface 203 of the docking connector 2 and the inner conical surface 402 of the docking sleeve 4 gradually fit together. The round head screw tail pin 9 of the docking connector 2 is also aligned within the guide notch 401 of the docking sleeve 4, achieving a precise connection between the gripping assembly 200 and the charging gun assembly 100. Compared with a straight cylindrical surface structure, the advantage is that the fit is accurate and there is no misalignment. The other end of the docking sleeve 4 is perpendicularly connected to the mounting plate 8, and a second screw hole group and a limit pin 15 are provided on the same side. The limit pin 15 is installed in the second screw hole group.

[0042] like Figure 8 and Figure 2 As shown, a cavity 1404 and a chamfer of the rotating shaft 14 are provided at one end of the rotating shaft 14, and a second pin hole group 1401 is provided next to the chamfer of the rotating shaft 14. The cavity 1404 and the chamfer of the rotating shaft 14 are both provided on the same side as the inner conical surface 402 of the docking sleeve 4. The chamfer of the rotating shaft 14 and the chamfer 302 of the sliding shaft cooperate with each other to assist in positioning. During the docking process of the charging gun assembly 100 and the grab assembly 200, the cavity 1404 is used to accommodate the limiting sliding shaft 3. The other end of the rotating shaft 14 is provided with a third screw hole group 1402 and an axis extension 1403. The grab assembly 200 also includes a locking pin 17 and a rotating baffle 16. The rotating baffle 16 is installed in the third screw hole group 1402 of the rotating shaft 14, and the locking pin 17 is installed in the second pin hole group 1401. The locking pin 17 is used to dock with the notch on the groove body 301 of the limiting sliding shaft 3. The rotating baffle 16 includes a main body and a raised portion, which are connected to each other. The main body is in a circular ring shape, and a circular hole is provided in the center of the main body. The circular hole in the main body fixes the rotating baffle 16 to the third screw hole group 1402 of the rotating shaft 14 through the screw 13. When the rotating baffle 16 rotates with the rotating shaft 14, the main body of the rotating baffle 16 will not be limited by the limit pin 15, but the raised portion of the rotating baffle 16 will be limited by the limit pin 15.

[0043] like Figure 1 and Figure 9As shown, the gripping assembly 200 also includes a camera component 5, a motor 6, an angle sensor component 7, and a synchronous wheel component. The camera component 5, the motor 6, and the angle sensor component 7 are all arranged on a mounting plate 8. The camera component 5 is mounted on the top of the mounting plate 8. The motor 6 and the angle sensor component 7 are both vertically connected to the mounting plate 8. The synchronous wheel component is respectively connected to the rotating shaft 14, the angle sensor component 7, and the motor 6. Specifically, the camera component 5 is a camera, and the motor 6 is a reduction motor 6. The synchronous wheel component includes a first synchronous wheel 18, a second synchronous wheel 20, and a third synchronous wheel. The first synchronous wheel 18 is mounted on the shaft extension 1403 of the rotating shaft 14, the second synchronous wheel 20 is mounted on the shaft of the angle sensor component 7, and the third synchronous wheel is mounted on the shaft of the motor 6. The gripping assembly 200 also includes a synchronous belt and a tensioning block 24. The tensioning block 24 is mounted on the mounting plate 8 and is used to tension the synchronous belt. The tensioning block 24 includes a cantilever shaft 21 and an idler wheel 19 . The idler wheel 19 is rotatably mounted on the cantilever shaft 21 and is in close contact with the synchronous belt. The first synchronous wheel 18 , the second synchronous wheel 20 and the third synchronous wheel are linked via the synchronous belt.

[0044] Combine Figures 1 to 8 , further explaining the working principle of this charging docking device:

[0045] First, the charging gun assembly 100 is identified by the camera component 5, and the position of the charging gun assembly 100 is given to the robotic arm (not shown). The robotic arm drives the grasping component 200 to gradually approach the charging gun assembly 100 to an appropriate distance, and makes the inner conical surface 402 of the docking sleeve 4 face the outer conical surface 203 of the docking head 2.

[0046] As the grabbing assembly 200 moves closer to the charging gun assembly 100, the outer conical surface 203 of the docking head 2 and the inner conical surface 402 of the docking sleeve 4 gradually fit together, and the round-head screw tail pin 9 is also aligned in the guide notch 401 of the docking sleeve 4, thereby achieving accurate combination of the grabbing assembly 200 and the charging gun assembly 100. The chamfer of the rotating shaft 14 on the rotating shaft 14 and the chamfer 302 of the sliding shaft on the limiting sliding shaft 3 are used to assist in positioning, which helps to complete the docking. In the initial state, a certain angle is maintained between the rotating shaft 14 and the docking sleeve 4, so that the notch of the locking pin 17 and the groove body 301 are in phase, ensuring that the locking pin 17 can enter smoothly. After the docking is completed, the limiting sliding shaft 3 enters the cavity 1404, and the locking pin 17 enters the notch of the groove body 301.

[0047] A positioning pin 10 is mounted on the limiting slide 3 and inserted into the second notch 202 of the docking head 2, limiting the limiting slide 3 to axial movement relative to the docking head 2. The motor 6 drives the rotating shaft 14 and the angle sensor assembly 7 via a synchronous belt. As the rotating shaft 14 rotates, the locking pin 17 slides within the notch 301, gradually locking the charging gun assembly 100 and the grab assembly 200. A spring 11 is placed between the limiting slide 3 and the docking head 2. When the force during the locking process exceeds a certain value, the limiting slide 3 moves axially relative to the docking head 2, ensuring that the locking force of the charging gun assembly 100 and the grab assembly 200 is consistent with the force of the spring 11. This prevents mechanical limiter overload and the risk of loss of locking force after the motor 6 stops. When the angle sensor assembly 7 reaches the specified angle, the motor 6 stops, and the charging gun assembly 100 and the grab assembly 200 are locked.

[0048] The disengagement process of the charging gun assembly 100 and the grab assembly 200 is exactly the opposite of the above-mentioned locking process, and will not be repeated here.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

Claims

1. A charging docking device, characterized in that: The charging gun assembly comprises a charging gun body and a docking structure, wherein the charging gun body and the docking structure are connected. The grab assembly comprises a mounting plate, a docking sleeve, and a rotating shaft, wherein the docking sleeve is mounted on the mounting plate and a portion of the rotating shaft is mounted in the docking sleeve. The docking structure includes a docking joint, a limiting sliding shaft, a spring, a limiting plate and a positioning pin, wherein the spring is installed between the docking joint and the limiting sliding shaft, the limiting plate is installed at one end of the limiting sliding shaft, and the positioning pin is installed on the limiting sliding shaft; The docking joint includes a second notch, and the positioning pin is inserted into the second notch of the docking joint, so that the limiting sliding shaft can move axially relative to the docking joint; A gap is reserved on the right side of the limit plate, and the limit sliding shaft can move within the gap. After the limit sliding shaft moves axially relative to the docking joint, the locking force of the charging gun assembly and the gripping assembly remains consistent with the force of the spring; The butt joint is provided with an outer conical surface, and a portion of the limiting sliding shaft is installed in the butt joint; The butt joint further comprises a first notch and a round head screw pin, wherein the round head screw pin is installed in the first notch, and the first notch and the second notch are located at the same end of the butt joint; One end of the limiting sliding shaft includes a groove body, a sliding shaft chamfer and a first pin hole group, the sliding shaft chamfer is arranged on one side of the groove body, the first pin hole group is arranged on the other side of the groove body, the first pin hole group is installed in the docking head, the positioning pin is installed in the first pin hole group, the groove body and the sliding shaft chamfer are both installed outside the docking head, and the other end of the limiting sliding shaft is provided with a first screw hole group, the groove body of the limiting sliding shaft is arc-shaped, and a notch is opened on one side of the arc-shaped groove body, the notch is L-shaped, and the notch is used for docking and grabbing components; A circular hole is provided at the center of the limiting plate, and the limiting plate is fixed to the limiting sliding shaft through a screw in the circular hole; One end of the docking sleeve is provided with an inner conical surface, and the inner conical surface is provided with a guide notch, which cooperates with the round head screw tail pin of the docking joint. The other end of the docking sleeve is vertically connected to the mounting plate, and a second screw hole group and a limit pin are provided on the same side, and the limit pin is installed in the second screw hole group; One end of the rotating shaft is provided with a cavity and a rotating shaft chamfer, a second pin hole group is provided next to the rotating shaft chamfer, and the other end of the rotating shaft is provided with a third screw hole group and a shaft extension; The grab assembly also includes a locking pin and a rotating baffle, the rotating baffle is installed in the third screw hole group of the rotating shaft, and the locking pin is installed in the second pin hole group; the locking pin is used to dock with the notch on the slot body of the limiting sliding shaft.

2. A charging docking device according to claim 1, characterized in that: The rotating baffle comprises a main body and a raised portion, wherein the main body and the raised portion are connected, the main body is annular, and a circular hole is provided at the center of the main body.

3. A charging docking device according to claim 1, characterized in that: The grabbing assembly further includes a camera component, a motor, an angle sensor component and a synchronous wheel component. The camera component, the motor and the angle sensor component are all arranged on the mounting plate. The synchronous wheel component is respectively connected to the rotating shaft, the angle sensor component and the motor.

4. A charging docking device according to claim 1, characterized in that: The grabbing assembly further includes a synchronous belt and a tensioning block, wherein the tensioning block is mounted on the mounting plate and is used to tension the synchronous belt.

5. A charging docking device according to claim 4, characterized in that: The tensioning block includes a cantilever shaft and an idler wheel. The idler wheel is rotatably mounted on the cantilever shaft and is in close contact with the synchronous belt.

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