Charging port dust cover retention mechanism with automatic closure function of a draw gun and charging device

Abstract

The utility model provides a dust cover retaining mechanism with automatic closing function of pulling out the gun and charging equipment, include: fixed base, cover, through rotating hinged structure is connected in fixed base, can switch between closing position and retaining position, be equipped with the limiting slot for limiting in the cover, elastic drive unit continues to the cover applies the force of closing position direction, balance lever center is hinged in fixed base, has force -receiving end and balance end, switching structure is used for exerting pressure to force -receiving end to make balance lever rotate around hinged point between the position of separation and retaining position, when balance lever is in retaining position, balance end and limiting slot abut to limit cover movement, when balance lever is in the position of separation, balance end is separated from limiting slot. Solve the problem that cannot realize the linkage of keeping open state when inserting the charging gun and automatically closing after pulling out the charging gun.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to a charging port dust cover retaining mechanism and charging equipment with an automatic closing function when the charging gun is pulled out. Background Technology

[0002] In the use of various electronic devices, new energy vehicles, and portable electrical appliances, the charging interface, as a key component for energy input, directly affects the safety and lifespan of the device due to its protective performance. To prevent dust, moisture, foreign objects, etc., from entering the charging interface and causing short circuits, corrosion, and other malfunctions, an openable cover structure is usually required at the charging port. Traditional charging port covers often use a simple hinged design with a spring, relying on the spring force to achieve automatic closing of the cover. However, this type of structure has obvious defects in practical applications: when the cover is in the open state, the continuous force of the spring will cause the cover to always tend to close. Without a stable limiting mechanism, it is easy for it to close accidentally due to slight vibration or external force, affecting the continuity of charging operation. Furthermore, it cannot achieve the linkage of keeping the cover open when the charging gun is inserted and automatically closing after the charging gun is removed. Summary of the Invention

[0003] The problem this utility model aims to solve is that traditional charging port cover structures cannot maintain an open state when the charging gun is inserted and automatically close after the charging gun is removed, thus creating a linkage mechanism.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: a charging port dust cover holding mechanism and charging equipment with automatic closing function when the gun is pulled out, comprising: a fixed base; a cover body connected to the fixed base by a rotary hinge structure, capable of switching between a closed position and a holding position, wherein the cover body is provided with a limiting groove for limiting the position; an elastic drive unit that continuously applies a force toward the closed position to the cover body; a balance lever centrally hinged to the fixed base, having a force-receiving end and a balance end; a switching structure for applying pressure to the force-receiving end to make the balance lever rotate around the hinge point between a disengaged position and a holding position; when the balance lever is in the holding position, the balance end abuts against the limiting groove to restrict the movement of the cover body; when the balance lever is in the disengaged position, the balance end disengages from the limiting groove, allowing the cover body to move freely.

[0005] When the cover is in the desired position (e.g., when charging is open), the balance lever is in the "holding position," with its "balance end" tightly abutting against the "limiting groove" inside the cover. This abutment forms a rigid limit, directly restricting the rotation or movement of the cover. Even under external vibration or slight impact, the cover cannot be accidentally closed because it is "locked" by the balance end. When the cover position needs to be switched (e.g., when closing the cover), the "switching structure" applies pressure to the "force-receiving end" of the balance lever, forcing the balance lever to rotate around the central hinge point to the "disengagement position." At this time, the balance end completely disengages from the limiting groove, releasing the restriction on the cover. The cover can then move freely under the continuous force of the elastic drive unit, achieving a smooth switch from the "holding position" to the "closed position." This creates a linkage where pressure is applied to the force-receiving end when the charging gun is inserted to keep the cover open, and the force-receiving end is in a free state when the charging gun is removed, automatically closing the cover.

[0006] Furthermore, the switching structure includes:

[0007] A locking trigger is rotatably mounted inside a fixed base, and its circumferential sidewall is provided with a planar driving part;

[0008] The planar drive unit is arranged parallel to and opposite to the force-receiving end of the balance lever;

[0009] The elastic abutment unit is used to drive the force-receiving end toward the planar driving part, forcing the two to remain in contact;

[0010] By rotating the locking trigger, the planar drive unit pushes the force-receiving end, driving the balance lever to switch between a disengaged position and a held position. Traditional charging port cover limiting structures often fail due to external impacts, while this switching structure enhances the stability of the limiting position through continuous contact between the planar drive unit and the force-receiving end.

[0011] The planar drive unit is parallel to and opposite the force-bearing end of the balance lever, and remains in contact under the action of the elastic abutment unit. This design ensures that the locking trigger continuously and stably drives the balance lever. When the cover is in the position that needs to be held, the planar drive unit of the locking trigger can precisely push the force-bearing end, so that the balance lever is stably held in the holding position, and the balance end reliably abuts against the limit groove.

[0012] Furthermore, the latching trigger has a first position and a second position;

[0013] The locking trigger extends radially upward to form a retaining rod, and is fitted with a torsion spring;

[0014] The torsion spring applies pressure to the retaining rod to keep the locking trigger in the first position by default.

[0015] When the locking trigger is in the first position, the planar drive unit drives the balance lever to remain in the disengaged position.

[0016] Furthermore, the locking trigger is provided with a trigger arm, the free end of which extends out of the fixed base;

[0017] When pressure is applied to the free end, the lock-up trigger rotates to the second position;

[0018] When the locking trigger is in the second position, the planar drive unit drives the balance lever to switch to the holding position.

[0019] Furthermore, the force-bearing end of the balance lever is provided with an elastic mounting hole;

[0020] The elastic abutment unit is a spring, which is installed in the elastic mounting hole, with its two ends abutting against the fixed base and the bottom of the elastic mounting hole, respectively.

[0021] The spring applies a spring force towards the planar drive portion to the force-bearing end, ensuring contact stability. Gaps or looseness between the limiting components can easily lead to limiting failure, but the spring in the elastic mounting hole eliminates the gaps in the component fit by continuously applying a spring force towards the planar drive portion, ensuring the reliability of the limiting.

[0022] Furthermore, the contact surface between the balancing end and the limiting groove is an orthogonal plane. When the cover is subjected to an external force attempting to close it, the orthogonal plane contact will generate a large static friction force and effectively resist the shear force along the contact surface, preventing the balancing end from slipping out of the limiting groove.

[0023] Furthermore, the rotary hinge structure includes:

[0024] An axial through hole is provided in the cover body;

[0025] Bearing support components on a fixed base;

[0026] A rotating shaft that passes through an axial through hole and is fixed to the bearing support.

[0027] A charging device includes: a charging base with a charging cavity; a charging gun head; the aforementioned holding mechanism; the free end of the trigger arm extends into the charging cavity, and when the charging gun head is inserted, it pushes the trigger arm to switch the locking trigger to a second position. Attached Figure Description

[0028] Figure 1 This is a perspective view of the present utility model;

[0029] Figure 2 This is a perspective view of the present utility model;

[0030] Figure 3 This is a three-dimensional sectional view of the present invention;

[0031] Figure 4 This is a cross-sectional view of the present invention when it is opened to the holding position and the locking trigger is in the first position;

[0032] Figure 5 This is a cross-sectional view of the present invention when it is opened to the holding position and the locking trigger is in the second position.

[0033] Figure 6 This is a cross-sectional view of the present invention when it is opened to the holding position and the locking trigger is in the first position without any force.

[0034] Figure 7 This is a cross-sectional view of the present invention when it is opened to the holding position and the locking trigger is activated by an external force and is in the second position.

[0035] Figure 8 This is a diagram showing the state of the present invention when it is in the closed position.

[0036] Diagram: 1. Fixed base; 2. Cover; 2.1. Limiting groove; 3. Rotary hinge structure; 3.1. Bearing support; 3.2. Axial through hole; 3.3. Rotating shaft; 4. Elastic drive unit; 5. Balance lever; 5.1. Elastic mounting hole; 6. Switching structure; 6.1. Locking trigger; 6.1.1. Planar drive part; 6.1.2. Holding rod; 6.1.3. Torsion spring; 6.1.4. Trigger arm; 6.2. Elastic abutment unit; 6.2.1. Spring; 7. Charging base; 7.1. Charging cavity; 8. Charging gun head. Detailed Implementation

[0037] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0038] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0039] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments. Without departing from the described principle, the implementation of the present invention may have any variations or modifications.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] Please see Figures 1 to 8A dynamic holding mechanism for a charging port cover includes a fixed base 1 and a cover 2. The cover 2 is connected to the fixed base 1 via a rotary hinge structure 3 and can switch between a closed position and a holding position. The cover 2 has a limiting groove 2.1 for limiting the position. It also includes an elastic drive unit 4, a balance lever 5, and a switching structure 6. The elastic drive unit 4 continuously applies a force to the cover 2 toward the closed position. The balance lever 5 is centrally hinged to the fixed base 1 and has a force-receiving end and a balance end. The switching structure 6 is used to apply pressure to the force-receiving end to make the balance lever 5 rotate around the hinge point between a disengaged position and a holding position. When the balance lever 5 is in the holding position, the balance end abuts against the limiting groove 2.1 to restrict the movement of the cover 2. When the balance lever 5 is in the disengaged position, the balance end disengages from the limiting groove 2.1, allowing the cover 2 to move freely. The switching structure 6 includes a locking trigger 6.1 and an elastic abutment unit 6.2. The locking trigger 6.1 is rotatably mounted within the fixed base 1, and its circumferential sidewall is provided with a planar driving part 6.1.1. The planar driving part 6.1.1 is parallel to and opposite to the force-receiving end of the balance lever 5. The elastic abutment unit 6.2 is used to drive the force-receiving end toward the planar driving part 6.1.1, forcing the two to maintain contact. By rotating the locking trigger 6.1, the planar driving part 6.1.1 pushes the force-receiving end, driving the balance lever 5 to switch between a disengaged position and a held position. The locking trigger 6.1 has a first position and a second position. The locking trigger 6.1 extends radially upward to form a holding rod 6.1.2, and is fitted with a torsion spring 6.1.3. The torsion spring 6.1.3 applies pressure to the holding rod 6.1.2 so that the locking trigger 6.1 is held in the first position by default. When the locking trigger 6.1 is in the first position, the planar driving part 6.1.1 drives the balance lever 5 to remain in the disengaged position. The locking trigger 6.1 is provided with a trigger arm 6.1.4, the free end of which extends out of the fixed base 1. When pressure is applied to the free end of the trigger arm 6.1.4, the locking trigger 6.1 rotates to the second position. When the locking trigger 6.1 is in the second position, the planar drive part 6.1.1 drives the balance lever 5 to switch to the holding position.

[0042] The force-bearing end of the balance lever 5 has an elastic mounting hole 5.1. The elastic abutment unit 6.2 is a spring 4.1, which is installed in the elastic mounting hole 5.1. Its two ends abut against the fixed base 1 and the bottom of the elastic mounting hole 5.1, respectively. The spring 4.1 applies a spring force to the force-bearing end toward the planar driving part 6.1.1 to ensure contact stability. The contact surface between the balance end and the limiting groove 2.1 is an orthogonal plane.

[0043] The rotary hinge structure 3 includes an axial through hole 3.2 in the cover 2, a bearing support 3.1 on the fixed base 1, and a rotating shaft 3.3 that passes through the axial through hole 3.2 and is fixed to the bearing support 3.1. The elastic drive unit 4 is a torsion spring used to drive the cover 2 to rotate to the closed position. This structure is a relatively conventional structure and will not be described in detail here. Please refer to the specific details. Figure 2 The mechanism's motion is as follows: In its natural state, the locking trigger 6.1 is in the first position under the action of the torsion spring 6.1.3. At this time, the planar drive part 6.1.1 pushes the force-bearing end of the balance lever 5, causing the balance lever 5 to be in the disengaged position. The balance end separates from the limiting groove 2.1 of the cover 2, and the cover 2 remains in the closed position under the action of the elastic drive unit 4. When the cover 2 is manually opened, the applied external force causes the cover 2 to overcome the force of the elastic drive unit 4 and rotate around the pivot 3.3 of the rotary hinge structure 3 to the holding position. At this time, pressing the free end of the trigger arm 6.1.4 of the locking trigger 6.1 causes the locking trigger 6.1 to overcome the elastic force of the torsion spring 6.1.3 and rotate to the second position. When the cover is closed, the planar drive unit 6.1.1 rotates and pushes the force-bearing end of the balance lever 5, causing the balance lever 5 to rotate around the central hinge point to the holding position. The balance end abuts against the limiting groove 2.1 of the cover 2 (orthogonal plane contact ensures stable limiting), thereby fixing the cover 2 in the holding position. When it is necessary to close the cover 2, the free end of the trigger arm 6.1.4 is pressed again, and the locking trigger 6.1 resets to the first position under the action of the torsion spring 6.1.3. The planar drive unit 6.1.1 drives the balance lever 5 to rotate back to the disengaged position, the balance end separates from the limiting groove 2.1, and the cover 2 rotates around the rotating shaft 3.3 back to the closed position under the continuous force of the elastic drive unit 4, completing one opening and closing cycle. Throughout the entire movement, the spring 4.1 at the force-bearing end of the balance lever 5 always applies elastic force to ensure that the force-bearing end is in close contact with the planar drive unit 6.1.1, ensuring the stability and continuity of motion transmission.

[0044] A charging device includes: a charging base 7 having a charging cavity 7.1; a charging gun head 8; the aforementioned holding mechanism; the free end of the trigger arm 6.1.4 extends into the charging cavity 7.1, and when the charging gun head 8 is inserted, it pushes the trigger arm 6.1.4 to switch the locking trigger 6.1 to a second position.

[0045] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the scope of the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A charging port dust cover retaining mechanism with automatic closing function when the charging gun is removed, characterized in that, include: Fixed base (1); The cover (2) is connected to the fixed base (1) by a rotating hinge structure (3) and can switch between a closed position and a holding position. The cover (2) is provided with a limiting groove (2.1) for limiting the position. The elastic drive unit (4) continuously applies a force toward the closed position to the cover (2); The balancing lever (5) is centrally hinged to the fixed base (1) and has a force-bearing end and a balancing end; The switching structure (6) is used to apply pressure to the force-bearing end so that the balance lever (5) rotates about the hinge point between the disengaged position and the held position; When the balance lever (5) is in the holding position, the balance end abuts against the limiting groove (2.1) to restrict the movement of the cover (2); When the balance lever (5) is in the disengaged position, the balance end disengages from the limiting groove (2.1), allowing the cover (2) to move freely.

2. The retaining mechanism according to claim 1, characterized in that, The switching structure (6) includes: A locking trigger (6.1) is rotatably mounted in a fixed base (1), and its circumferential sidewall is provided with a planar driving part (6.1.1); The planar drive unit (6.1.1) is arranged parallel to and opposite to the force-receiving end of the balance lever (5); The elastic abutment unit (6.2) is used to drive the force-receiving end to move toward the planar driving part (6.1.1), forcing the two to remain in contact; By rotating the locking trigger (6.1), the planar drive unit (6.1.1) pushes the force-receiving end, driving the balance lever (5) to switch between the disengaged position and the holding position.

3. The retaining mechanism according to claim 2, characterized in that: The latching trigger (6.1) has a first position and a second position; The locking trigger (6.1) extends radially to form a retaining rod (6.1.2) and is fitted with a torsion spring (6.1.3); The torsion spring (6.1.3) applies pressure to the retaining rod (6.1.2) to keep the locking trigger (6.1) in the first position by default; When the locking trigger (6.1) is in the first position, the planar drive unit (6.1.1) drives the balance lever (5) to remain in the disengaged position.

4. The retaining mechanism according to claim 3, characterized in that: The locking trigger (6.1) is provided with a trigger arm (6.1.4), the free end of which extends out of the fixed base (1); When pressure is applied to the free end of the trigger arm (6.1.4), the locking trigger (6.1) rotates to the second position; When the locking trigger (6.1) is in the second position, the planar drive unit (6.1.1) drives the balance lever (5) to switch to the holding position.

5. The retaining mechanism according to claim 2, characterized in that: The force-bearing end of the balance lever (5) is provided with an elastic mounting hole (5.1); The elastic abutment unit (6.2) is a spring (6.2.1), which is installed in the elastic mounting hole (5.1), and its two ends abut against the fixed base (1) and the bottom of the elastic mounting hole (5.1) respectively; The spring (4.1) applies a spring force to the force-bearing end toward the planar drive part (6.1.1) to ensure contact stability.

6. The retaining mechanism according to claim 1, characterized in that: The contact surface between the balancing end and the limiting groove (2.1) is an orthogonal plane.

7. The retaining mechanism according to claim 1, characterized in that: The rotary hinge structure (3) includes: An axial through hole (3.2) is provided in the cover (2); Bearing support (3.1) on fixed base (1); A rotating shaft (3.3) that passes through an axial through hole (3.2) and is fixed to a bearing support (3.1).

8. A charging device, characterized in that, include: A charging base (7) having a charging socket (7.1); Charging gun head (8); The retaining mechanism as described in any one of claims 1-7; The free end of the trigger arm (6.1.4) extends into the charging cavity (7.1). When the charging gun head (8) is inserted, it pushes the trigger arm (6.1.4) to switch the locking trigger (6.1.4) to the second position.

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