Anti-dragging type new energy charging pile

Abstract

The invention relates to the technical field of new energy automobile charging piles, in particular to an anti-dragging type new energy charging pile. The technical problem to be solved is that when an automobile drags a cable of an existing charging pile, a connector cannot automatically fall off. Comprising a pile body, the pile body is provided with a cable, the cable is provided with a connector, the connector is connected with a sliding frame in a sliding mode, the connector is connected with a first rack in a sliding mode, the connector is connected with a second rack in a sliding mode, and the connector is rotationally connected with a gear meshed with the first rack and the second rack. A spring is fixedly connected between the sliding frame and the second rack, the cable is fixedly connected with a fixing ring, and a pull rope is fixedly connected between the fixing ring and the first rack. When a cable is dragged by an automobile, the sliding frame is driven to extrude the automobile charging port through elastic force release of the spring, so that the connector is far away from the automobile relative to the sliding frame, and the safety of the automobile and the charging pile is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle charging pile technology, and in particular to an anti-drag type new energy charging pile. Background Technology

[0002] With the popularization of new energy vehicles, charging piles have become an important supporting infrastructure. Currently, common charging piles charge vehicles through cables and charging connectors.

[0003] However, existing charging stations have a significant shortcoming when charging cars: if the driver forgets to unplug the charging connector after charging is finished and starts the vehicle, since the car's charging port is usually located on the side of the vehicle, and the initial direction of the vehicle's movement is basically perpendicular to the direction in which the charging station connector is inserted, the charging connector cannot automatically detach from the charging port. The vehicle will drag the charging cable, causing the cable to be forcibly stretched. This can easily cause structural damage to the charging connector or the vehicle's charging port, and the charging station itself may be dragged, tilted, or even tipped over due to the huge pulling force, posing a serious safety hazard. Existing charging station designs generally lack effective protection mechanisms against such abnormal dragging. Summary of the Invention

[0004] To address the technical problem that existing charging piles cannot automatically detach their connectors, this invention provides a pull-release anti-drag type new energy charging pile.

[0005] The technical solution is as follows: A drag-resistant new energy charging pile includes a pile body, a cable installed on the pile body, a connector installed on the cable, a sliding frame slidably connected to the connector, a first rack slidably connected to the connector, a second rack slidably connected to the connector, a gear rotatably connected to the connector that meshes with both the first and second racks, a spring fixed between the sliding frame and the second rack, a fixing ring fixed to the cable, and a pull rope fixed between the fixing ring and the first rack.

[0006] Furthermore, the sliding frame is slidably connected to an insert block, the connector is provided with a slot for inserting the insert block, and a first tension spring is fixedly connected between the insert block and the sliding frame.

[0007] Furthermore, the portion of the cable located between the connector and the retaining ring is configured as a first bend.

[0008] Furthermore, the insert block is provided with a trapezoidal groove, and the second rack is provided with a limiting part for pressing the insert block.

[0009] Furthermore, a second tension spring is fixedly connected between the first rack and the connector.

[0010] Furthermore, when the first bend is in a bent state, the tension provided by the second tension spring is greater than the deformation force of the cable, which facilitates the second tension spring to stretch the cable and form the first bend.

[0011] Furthermore, the connector ball joint is symmetrically distributed with first sleeve rods, the first sleeve rods are slidably connected to a first slide rod that is connected to the fixed ball joint, the first sleeve rods are provided with a first through hole and a second through hole, and a one-way valve is provided in the first through hole.

[0012] Furthermore, the flow area of ​​the second through hole is smaller than the flow area of ​​the one-way valve in the first through hole.

[0013] Furthermore, the connector is fixedly connected to a sleeve, the sliding frame is fixedly connected to an L-shaped rod that is slidably and sealingly connected to the sleeve, the fixed ring is ball-jointed to a second sleeve rod on the side away from the connector, the cable is fixedly connected to a retaining ring, the second sleeve rod is slidably and sealingly connected to a second sliding rod that is slidably connected to the retaining ring, the side of the second sleeve rod near the fixed ring is provided with a constant pressure hole, a liquid guide tube is connected between the second sleeve rod and the sleeve, and the sleeve, the second sleeve rod and the liquid guide tube are all filled with hydraulic oil.

[0014] Furthermore, the portion of the cable located between the retaining ring and the retaining ring is configured as a second bend.

[0015] The beneficial effects of this invention are as follows: When a car drags the cable, the spring force releases, causing the sliding frame to press against the car's charging port, thus moving the connector away from the car relative to the sliding frame and ensuring the safety of both the car and the charging station. The design of the first sleeve rod connecting to the connector ball joint and the first sliding rod connecting to the fixed ball joint allows the connector to detach even when the car's movement direction is parallel or perpendicular to the connector opening direction. Furthermore, the connector triggering condition does not require electrical components or cable drag detection elements, reducing the operating conditions of this charging station. During the connector detachment process, by reducing the cable tension, the cable is kept in a relaxed state, reducing the drag force on the connector and facilitating detachment from the car's charging port. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the connector and the first sleeve rod of the present invention; Figure 3 This is a three-dimensional structural diagram of the first and second racks of the present invention; Figure 4 This is a three-dimensional structural diagram of the insert block and the limiting part of the present invention; Figure 5 This is a three-dimensional structural diagram of the second rod and the second slide rod of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of the 3D structure at point A; Figure 7 For the present invention Figure 5 Enlarged view of the 3D structure at point B; Figure 8 For the present invention Figure 5 Enlarged view of the 3D structure at point C.

[0017] Explanation of reference numerals in the attached drawings: 1-Pile body, 2-Cable, 201-First bend, 202-Second bend, 203-Fixing ring, 204-Snap ring, 3-Joint, 4-Sliding frame, 5-Insertion block, 6-First tension spring, 7-First rack, 701-Pull rope, 8-Second tension spring, 9-Second rack, 901-Limiting part, 10-Gear, 11-Spring, 12-First sleeve rod, 1201-First through hole, 1202-Second through hole, 13-First sliding rod, 14-Sleeve, 15-L-shaped rod, 16-Second sleeve rod, 17-Second sliding rod, 18-Liquid guide tube. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments described below are mainly written with the connector 3 in the same direction as the vehicle's movement, so as to facilitate those skilled in the art to understand the operating principle of the charging pile. However, in actual practice, the connector 3 is usually perpendicular to the vehicle's movement direction, but the process is similar.

[0019] Example 1 If a driver forgets to unplug the charging station after charging is complete, the charging port will not automatically disconnect when the car starts. Since the charging port is usually located on the side of the car, the car's direction of travel will be perpendicular to the direction of the charging station connector. As a result, the car will drag and stretch the charging station's cable, causing damage to the connector or the car's charging port. In severe cases, this can cause the charging station to tip over.

[0020] A type of anti-drag new energy charging pile, such as Figures 1-6As shown, the device includes a pile body 1, on which a cable 2 is mounted. A support rod for winding the cable 2 is located on the left side of the pile body 1. A connector 3 is installed on the left side of the cable 2. The connector 3 has two handles symmetrically distributed front and back for easy movement. A sliding frame 4 is slidably connected to the left side of the connector 3. A plug 5 is slidably connected to the rear upper part of the sliding frame 4. A slot for inserting the plug 5 is located at the rear upper part of the connector 3. A first tension spring 6 is fixed between the plug 5 and the sliding frame 4. A first rack 7 is slidably connected to the rear upper part of the connector 3. A second rack 9 is slidably connected to the front upper part of the connector 3. The head 3 is rotatably connected to a gear 10 that meshes with both the first rack 7 and the second rack 9. A spring 11 is fixed between the left side of the sliding frame 4 and the second rack 9. The cable 2 is fixedly connected to a retaining ring 203 located on the right side of the connector 3. A pull rope 701 is fixed between the retaining ring 203 and the first rack 7. The portion of the cable 2 located between the connector 3 and the retaining ring 203 is configured as a first bend 201. During the process of the car towing the cable 2, the first bend 201 gradually straightens. The insert 5 is provided with a trapezoidal groove. A limiting part 901 for pressing the insert 5 is provided on the left side of the second rack 9. When the limiting part 901... When the insert block 5 is inserted into the trapezoidal groove, the limiting part 901 moves to the left, pressing the insert block 5 to move upward. A second tension spring 8 is fixed between the first rack 7 and the connector 3. When the first bend 201 is in a bent state, the tension provided by the second tension spring 8 is greater than the deformation force of the cable 2, which facilitates the second tension spring 8 to stretch the cable 2 and form the first bend 201. In the initial state, the second tension spring 8 is in a stretched state, so that the first rack 7 drives the fixing ring 203 through the pull rope 701 to control the first bend 201 to be in a bent state. Two first sleeve rods 12 are symmetrically distributed front and back on the right side of the connector 3. The first sleeve rod 12 is slidably connected to a first slide rod 13 that is ball-jointed with the left side of the fixed ring 203. The left side of the first sleeve rod 12 is provided with a first through hole 1201 and a second through hole 1202. A one-way valve is provided in the first through hole 1201. When the pressure inside the first sleeve rod 12 decreases, the one-way valve in the first through hole 1201 opens. When the pressure inside the first sleeve rod 12 increases, the one-way valve in the first through hole 1201 closes. The flow area of ​​the second through hole 1202 is smaller than the flow area of ​​the one-way valve in the first through hole 1201, which is used to limit the movement speed of the first slide rod 13 in the adjacent first sleeve rod 12.

[0021] When cable 2 is stretched, the connection between connector 3 and the car's charging port is automatically disconnected, preventing excessive dragging of cable 2. The specific operation is as follows: When charging a new energy electric vehicle, the operator drives the car to the vicinity of the charging station 1. Initially, cable 2 is wrapped around the placement rod of the charging station 1. The operator removes cable 2 from the placement rod and inserts connector 3 into the car's charging port. The sliding frame 4 contacts the outside of the car's charging port. The operator then controls the charging station 1 to charge the car. After charging is complete, the operator unplugs connector 3 and wraps cable 2 back around the placement rod of the charging station 1. This completes one charging cycle. If the operator forgets to unplug connector 3 after charging is complete... When the car is driven away, the car drives the connector 3 to move to the left in sync. The connector 3 gradually pulls the cable 2, and the first bend 201 is pulled and gradually straightens. The fixing ring 203 drives the first rack 7 to move to the right through the pull rope 701 (at this time, the rightward movement is only relative to the connector 3). The second tension spring 8 is stretched, and the first rack 7 drives the second rack 9 to move to the left through the gear 10. The spring 11 is compressed. During the rightward movement of the fixing ring 203, the fixing ring 203 drives the two first slide rods 13 to move to the right. Taking the first slide rod 13 on the front side as an example, the rightward movement of the first slide rod 13 reduces the pressure inside the first sleeve rod 12. The one-way valve in the first through hole 1201 opens, and the outside gas enters the first sleeve rod 12 through the first through hole 1201 and the second through hole 1202.

[0022] As cable 2 is gradually dragged, when the dragging force on cable 2 reaches the release trigger condition, the limiting part 901 inserts into the trapezoidal groove of the plug 5 and squeezes the plug 5 to move upward. The first tension spring 6 is stretched, and the lower side of the plug 5 moves out of the slot of the connector 3. The limiting of the sliding frame 4 is released. Since the left side of the sliding frame 4 is in contact with the outside of the car charging port, the release of the elastic force of the spring 11 will drive the second rack 9 to move to the right relative to the sliding frame 4. The second rack 9 drives the first rack 7 to move to the left through the gear 10. At the same time, the tension of the second tension spring 8 is released, driving the first rack 7 to move to the left. However, the first rack 7 will only move to the left slowly. The specific reason is as follows: during the process of the first rack 7 moving to the left, the first rack 7 drives the fixing ring 203 to move to the left through the pull rope 701. The fixing ring 203 drives the two first slide rods 13 to move to the left. Taking the first slide rod 13 on the front side as an example, the leftward movement of the first slide rod 13 increases the pressure on its left side. The one-way valve inside the first through hole 1201 is closed, and gas can only be discharged through the second through hole 1202. However, the diameter of the second through hole 1202 is small, so the gas discharge speed in the first sleeve rod 12 is slow. At the same time, the first slide rod 13 moves to the left slowly, the first rack 7 moves to the left slowly, and the gear 10 is almost stuck. During this process, the elastic force of the spring 11 will drive the second rack 9, the gear 10, the first rack 7 and the connector 3 to move to the right. The slot of the connector 3 moves to the right relative to the plug block 5, and the connector 3 moves to the right relative to the sliding frame 4 to move out of the car charging port. The process of the connector 3 being disengaged is completed to prevent the car from dragging the connector 3 and causing a safety accident. During the process of the connector 3 being pulled out of the car charging port, the movement speed of the fixing ring 203 near the connector 3 is limited, thereby preventing the second tension spring 8 from quickly resetting and bending the first bending part 201, causing the cable 2 to tighten, resulting in excessive pressure between the connector 3 and the car charging port, making it difficult to pull out the connector.

[0023] After the disengagement process of connector 3 is completed, the second tension spring 8 is still in the released tension state. The second tension spring 8 drives the first rack 7 to move to the left. The first rack 7 drives the fixing ring 203 to move to the left through the pull rope 701, causing the first bending part 201 to gradually bend. The first rack 7 drives the second rack 9 to move to the right through the gear 10. The second rack 9 drives the sliding frame 4 to move to the right through the spring 11. The sliding frame 4 drives the insertion block 5 and the first tension spring 6 to move to the right. When the insertion block 5 is aligned with the slot of connector 3, the tension of the first tension spring 6 is released, causing the insertion block 5 to move downward and insert into the slot of connector 3. The tension of the second tension spring 8 returns to its initial release state.

[0024] The above process is described under the condition that the direction of the car's movement is parallel to the opening direction of the connector 3. However, due to the ball joint between the first sleeve rod 12 and the connector 3 and the ball joint between the first slide rod 13 and the fixing ring 203, the disengagement of the connector 3 can also be completed when the direction of the car's movement is perpendicular to the opening direction of the connector 3. For example, when the car moves to the left, the opening of the connector 3 is backward, and the triggering condition of the connector 3 does not require electrical components and cable 2 drag detection components, thus reducing the usage conditions of this charging pile.

[0025] Example 2 Based on Example 1, a type of anti-drag new energy charging pile, such as Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 As shown, a sleeve 14 is fixedly connected to the upper side of the connector 3, an L-shaped rod 15 is fixedly connected to the sliding frame 4 and is slidably connected to the left side of the sleeve 14, a second sleeve rod 16 is ball-jointed to the upper right side of the fixing ring 203, a retaining ring 204 is fixedly connected to the right side of the fixing ring 203, a second sliding rod 17 is slidably connected to the left side of the retaining ring 204, a constant pressure hole is provided on the left side of the second sleeve rod 16 to facilitate the free movement of the second sliding rod 17 within the second sleeve rod 16, and a liquid guide tube 18 connects the second sleeve rod 16 and the sleeve 14. The cylinder 14, the second sleeve rod 16, and the liquid guide tube 18 are all filled with hydraulic oil. The part of the cable 2 located between the fixed ring 203 and the retaining ring 204 is set as the second bend 202. In the initial state, the second bend 202 is in a bent state. When the sliding frame 4 is limited to the connector 3, the car drags the cable 2, which only causes the first bend 201 to be dragged and gradually straightened. The second bend 202 does not change. Since the sleeve 14 and the L-shaped rod 15 do not move relative to each other, the second sleeve rod 16 and the second sliding rod 17 will also not move relative to each other.

[0026] As connector 3 moves to the right relative to sliding frame 4, connector 3 drives sleeve 14 to move to the right, reducing the pressure inside sleeve 14. Hydraulic oil from the second sleeve rod 16 is then drawn into sleeve 14 through the guide pipe 18. The reduced pressure on the right side of the second sleeve rod 16 causes the second sliding rod 17 to move to the right. External gas enters the second sleeve rod 16 through its constant pressure hole. The second sliding rod 17 drives the retaining ring 204 to move to the right, gradually releasing and straightening the bending force of the second bend 202, reducing the tension of cable 2, and placing cable 2 in a relaxed state. This reduces the lateral drag force of cable 2 on connector 3 (especially when the vehicle's direction of travel is perpendicular to the opening direction of connector 3). The lateral squeezing force between the connector 3 and the car charging port is reduced because the connector 3 needs to move forward to be pulled out of the car charging port. Therefore, the rightward squeezing force of the connector 3 on the car charging port is reduced to facilitate the disengagement of the connector 3. As the connector 3 moves to the left relative to the sliding frame 4, the connector 3 drives the sleeve 14 to move to the left, and the pressure inside the sleeve 14 increases. The hydraulic oil in the sleeve 14 is pushed into the second sleeve rod 16 through the liquid guide tube 18. The pressure on the right side of the second sleeve rod 16 increases, which drives the second slide rod 17 to move to the left. The gas in the second sleeve rod 16 is discharged through the constant pressure hole. The second slide rod 17 drives the retaining ring 204 to move to the right, which causes the second bending part 202 to gradually bend.

[0027] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A drag-resistant new energy charging pile, comprising a pile body (1), wherein the pile body (1) is provided with a cable (2), and the cable (2) is equipped with a connector (3), characterized in that, The joint (3) is slidably connected with a sliding frame (4), the joint (3) is slidably connected with a first rack (7), the joint (3) is slidably connected with a second rack (9), the joint (3) is rotatably connected with a gear (10) that meshes with both the first rack (7) and the second rack (9), a spring (11) is fixedly connected between the sliding frame (4) and the second rack (9), the cable (2) is fixedly connected with a fixing ring (203), and a pulling rope (701) is fixedly connected between the fixing ring (203) and the first rack (7).

2. The anti-drag type new energy charging pile according to claim 1, characterized in that, The sliding frame (4) is slidably connected with a plug (5), the joint (3) is provided with a slot for the plug (5) to insert, and a first tension spring (6) is fixedly connected between the plug (5) and the sliding frame (4).

3. The anti-drag type new energy charging pile according to claim 1, characterized in that, The part of the cable (2) between the joint (3) and the fixing ring (203) is set as a first bending part (201).

4. The anti-drag type new energy charging pile according to claim 3, characterized in that, The plug (5) is provided with a trapezoidal slot, and the second rack (9) is provided with a limiting part (901) for pressing the plug (5).

5. The anti-drag type new energy charging pile according to claim 4, characterized in that, A second tension spring (8) is fixedly connected between the first rack (7) and the joint (3).

6. The anti-drag type new energy charging pile according to claim 5, characterized in that, When the first bending part (201) is in a bent state, the pulling force provided by the second tension spring (8) is greater than the deformation force of the cable (2), which is convenient for the second tension spring (8) to stretch the cable (2) and form the first bending part (201).

7. A drag-resistant new energy charging pile according to claim 6, characterized in that, The joint (3) is ball-jointed with symmetrically distributed first sleeve rods (12), the first sleeve rods (12) are hermetically slidably connected with first slide rods (13) that are ball-jointed with the fixing ring (203), the first sleeve rods (12) are provided with a first through hole (1201) and a second through hole (1202), and a one-way valve is arranged in the first through hole (1201).

8. The anti-drag type new energy charging pile according to claim 7, characterized in that, The flow area of the second through hole (1202) is smaller than the flow area of the one-way valve in the first through hole (1201).

9. A drag-resistant new energy charging pile according to claim 7, characterized in that, The joint (3) is fixedly connected with a sleeve (14), the sliding frame (4) is fixedly connected with an L-shaped rod (15) that is hermetically slidably connected with the sleeve (14), the side of the fixing ring (203) far from the joint (3) is ball-jointed with a second sleeve rod (16), the cable (2) is fixedly connected with a clamping ring (204), the second sleeve rod (16) is hermetically slidably connected with a second slide rod (17) that is ball-jointed with the clamping ring (204), a constant pressure hole is arranged on the side of the second sleeve rod (16) close to the fixing ring (203), a liquid guide pipe (18) is communicated between the second sleeve rod (16) and the sleeve (14), and hydraulic oil is filled in the sleeve (14), the second sleeve rod (16) and the liquid guide pipe (18).

10. A drag-resistant new energy charging pile according to claim 9, characterized in that, The part of the cable (2) between the fixing ring (203) and the clamping ring (204) is set as a second bending part (202).

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