A dual-switch dual-signal triggering device for car charging guns

Abstract

This utility model discloses a dual-switch, dual-signal triggering device for an automotive charging gun, comprising a charging gun housing, and a triggering device installed inside the charging gun housing. The triggering device includes a pressure strip, a switch bracket, a first micro switch, and a second micro switch. The pressure strip is rotatably connected to the charging gun housing, and has a first pressing protrusion and a second pressing protrusion on the pressure strip. The switch bracket is installed inside the charging gun housing and is located below the pressure strip. The first micro switch is installed on the switch bracket and corresponds to the first pressing protrusion. The second micro switch is installed on the switch bracket and corresponds to the second pressing protrusion, and is located on the same side as the first micro switch. This utility model can effectively suppress unexpected displacement or elastic deformation caused by the weight of the charging cable, frequent insertion and removal, or accidental collisions, ensuring the accuracy of the locking action, thereby providing a stable and reliable physical basis for dual-signal triggering, and is applicable to different current scenarios.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric vehicle charging equipment, specifically relating to a dual-switch dual-signal triggering device for an automotive charging gun. Background Technology

[0002] The charging gun is a key component for electric vehicle charging. Its core function is to connect the charging station (or household power supply) to the vehicle's charging port via a physical interface, thus completing the power transfer. It typically consists of a plug, cable, and connector.

[0003] Chinese patent CN111326360A discloses a one-button dual-signal transmitting device, which includes a pressure strip and a base connected to the charging gun housing, a first switch and a second switch mounted on the base, and a side pressure strip connected to both the base and the charging gun housing. The pressure strip has a locking function and is connected to the car's lock tongue. Initially, the pressure strip is separated from the first switch, and the side pressure strip is in contact with the second switch. When the pressure strip is pressed, it first separates from the second switch, triggering the first electrical signal, which allows the car's lock tongue to disengage. Continuing to press the pressure strip causes it to contact the first switch, triggering the second electrical signal, which cuts off power to the charging gun. In other words, by using a single control button, the opening and closing states of the two switches can be changed sequentially through different button press strokes to generate two electrical signals, which can meet certain usage requirements.

[0004] However, the downward stroke of the locking mechanism in the aforementioned patent is relatively small when the user operates the opening button and charging switch. This design has shortcomings in high-current application scenarios: due to the significantly increased weight of the charging cable of a high-current charging gun, the gun body is prone to unexpected displacement or deformation of the locking mechanism under the weight of its own body and the cable during the insertion and removal of the charging gun. This slight mechanical disturbance will be further transmitted to the linkage with the locking mechanism, which can easily cause the module to be triggered unexpectedly, i.e., a "false trigger" phenomenon. Therefore, the existing locking structure and its associated triggering mechanism have limited stability and anti-interference capabilities, making it difficult to meet the requirements of high-current, high-power charging scenarios.

[0005] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a dual-switch dual-signal triggering device for automotive charging guns.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to provide a dual-switch, dual-signal triggering device for an automotive charging gun, which can solve the problems mentioned above in the background.

[0008] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0009] A dual-switch, dual-signal triggering device for an automotive charging gun includes a charging gun housing. The triggering device is installed inside the charging gun housing and includes a pressure strip, a switch bracket, a first micro switch, and a second micro switch. The pressure strip is rotatably connected to the charging gun housing and has a first pressing protrusion and a second pressing protrusion. The switch bracket is installed inside the charging gun housing and is located below the pressure strip. The first micro switch is installed on the switch bracket and corresponds to the first pressing protrusion. The second micro switch is installed on the switch bracket and corresponds to the second pressing protrusion, and is located on one side of the first micro switch.

[0010] In one or more embodiments of this utility model, the pressure strip is made of glass fiber reinforced nylon material with a thickness of 8-12mm.

[0011] In one or more embodiments of this utility model, the pressure strip includes a locking part, a pressing part, and a receiving part. One end of the locking part passes through the charging gun housing, and the end of the locking part located outside the charging gun housing is connected to a locking hook. The first pressing protrusion and the second pressing protrusion are both connected to the pressing part. A button is provided on the receiving part, and the button protrudes from the charging gun housing.

[0012] In one or more embodiments of this utility model, the pressing part is provided with reinforcing ribs, which extend along the length direction of the pressing strip.

[0013] In one or more embodiments of this utility model, the pressing surface of the pressing part is provided with a micro-textured anti-slip layer, which is an interlaced diamond grid with a depth of 0.05-0.1mm.

[0014] In one or more embodiments of this utility model, the pressing surface of the pressing part is further provided with a groove, the groove being disposed between the first pressing protrusion and the second pressing protrusion, and the groove depth being 0.8-1.2mm.

[0015] In one or more embodiments of this utility model, the pressure-bearing part is provided with a compensation slope, and the inclination angle of the compensation slope is 10°-15°.

[0016] In one or more embodiments of this utility model, the height difference between the first pressing protrusion and the second pressing protrusion is 0.5-1.5mm, and both are made of hemispherical ceramic composite material.

[0017] In one or more embodiments of this utility model, the switch bracket is provided with a pair of slots, and the first micro switch and the second micro switch are fixed in the slots by interference fit.

[0018] In one or more embodiments of this utility model, the sidewall of the card slot is provided with an elastic damping sheet, which is made of silicone.

[0019] Compared with the prior art, the dual-switch dual-signal triggering device for car charging gun of this utility model can effectively suppress unexpected displacement or elastic deformation caused by the gravity of the charging cable, frequent plugging and unplugging or accidental collision, and ensure the accuracy of the locking action, thereby providing a stable and reliable physical basis for dual-signal triggering, and can be applied to different current scenarios. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a dual-switch dual-signal triggering device for an automotive charging gun according to an embodiment of the present invention;

[0022] Figure 2 This is a front view of a dual-switch dual-signal triggering device for an automotive charging gun according to an embodiment of the present invention;

[0023] Figure 3 This is a perspective view of the pressure strip in one embodiment of the present invention;

[0024] Figure 4 This is a perspective view of a switch bracket in one embodiment of the present invention.

[0025] Explanation of key figure labels:

[0026] 01-Lock part, 02-Pressing part, 021-Reinforcing rib, 022-Groove, 03-Pressure part, 031-Compensating slope, 1-Pressure strip, 101-First pressing protrusion, 102-Second pressing protrusion, 103-Lock hook, 2-Switch bracket, 3-First micro switch, 4-Second micro switch. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0028] like Figures 1 to 4 As shown, an embodiment of this utility model discloses a dual-switch, dual-signal triggering device for an automotive charging gun, comprising a charging gun housing and a triggering device installed inside the charging gun housing. The triggering device includes a pressure strip 1, a switch bracket 2, a first micro switch 3, and a second micro switch 4. The pressure strip 1 is rotatably connected to the charging gun housing and has a first pressing protrusion 101 and a second pressing protrusion 102. The switch bracket 2 is installed inside the charging gun housing and is located below the pressure strip 1. The first micro switch 3 is installed on the switch bracket 2 and corresponds to the first pressing protrusion 101. The second micro switch 4 is installed on the switch bracket 2 and corresponds to the second pressing protrusion 102, and is located on one side of the first micro switch 3.

[0029] By pressing the pressure strip 1, the first pressing protrusion 101 and the second pressing protrusion 102 on the pressure strip 1 will simultaneously contact the first micro switch 3 and the second micro switch 4 on the switch bracket 2. This allows the two spatially separated first micro switches 3 and second micro switches 4 to physically contact and activate within one effective operating stroke. When the first micro switch 3 and the second micro switch 4 are correctly triggered, it can be determined as a valid operating command.

[0030] In this example, the installation method of the pressure strip 1 is the prior art and is the same as the installation method of the pressure strip in Chinese Patent No. CN111326360A. Specifically, the pressure strip 1 can rotate with the charging gun shell through the fixed fulcrum, and the front end of the pressure strip 1 is always pressed down without the action of external force by setting a torsion spring or spring, so that there is a certain gap between the pressing protrusion and the micro switch, that is, to ensure that the first micro switch 3 and the second micro switch 4 are always in the normally open state before pressing.

[0031] Preferably, the first micro switch 3 is a cover opening switch for controlling the charging gun, and the second micro switch 4 is a charging confirmation switch.

[0032] Among them, the pressure strip 1 is made of glass fiber reinforced nylon material with a thickness of 8-12mm to ensure the overall strength of the pressure strip 1.

[0033] like Figures 1 to 4As shown, the pressure strip 1 includes a locking part 01, a pressing part 02, and a receiving part 03. One end of the locking part 01 passes through the charging gun housing, and the end of the locking part 01 located outside the charging gun housing is connected to a locking hook 103. The pressing part 02 is used to install the first pressing protrusion 101 and the second pressing protrusion 102 for contacting the first micro switch 3 and the second micro switch 4. The locking hook 103 can engage with the locking tongue of the car charging port, thereby allowing the charging gun to be inserted into the car charging port.

[0034] The first pressing protrusion 101 and the second pressing protrusion 102 are both connected to the pressing part 02. A button is provided on the pressure receiving part 03, and the button protrudes from the charging gun shell. By pressing the button, the button will press the pressure receiving part 03, thereby causing the first pressing protrusion 101 and the second pressing protrusion 102 on the pressing part 02 to synchronously contact the first micro switch 3 and the second micro switch 4, respectively. Through the downward pressing action of a single pressure bar 1, two independent signal switches are precisely and reliably triggered in the same operation step.

[0035] like Figures 1 to 4 As shown, the pressing part 02 is provided with a reinforcing rib 021, which extends along the length of the pressing strip 1 to increase the strength of the pressing part 02.

[0036] The pressing surface of the pressing part 02 is provided with a micro-textured anti-slip layer. The micro-textured anti-slip layer is an interlaced diamond grid with a depth of 0.05-0.1mm. It can maintain the efficiency of operation force transmission in a humid environment and reduce insufficient triggering force caused by slippage.

[0037] In addition, the pressing surface of the pressing part 02 is also provided with a groove 022. The groove 022 is located between the first pressing protrusion 101 and the second pressing protrusion 102. The groove 022 has a depth of 0.8-1.2mm and is used to isolate vibration transmission.

[0038] like Figures 1 to 4 As shown, the pressure-bearing part 03 is provided with a compensation ramp 031, the inclination angle of which is 10°-15°, to counteract the deformation and displacement caused by the gravity of the gun line.

[0039] The height difference between the first pressing protrusion 101 and the second pressing protrusion 102 is 0.5-1.5mm, and both are made of hemispherical ceramic composite material. This ensures that during a single pressing action of the pressure strip 1, the first pressing protrusion 101 and the second pressing protrusion 102 have a timing difference of 5-10ms, which ensures that the two switches are eventually triggered synchronously and avoids mechanical interference caused by absolute synchronization.

[0040] In addition, the switch bracket 2 is provided with a pair of slots, and the first micro switch 3 and the second micro switch 4 are fixed in the slots by interference fit to ensure the installation of the first micro switch 3 and the second micro switch 4.

[0041] Specifically, the card slot sidewall is equipped with an elastic damping sheet made of silicone. The silicone elastic damping sheet absorbs the instantaneous impact force of the micro switch through elastic deformation, reducing the rebound amplitude of the switch contacts, and at the same time provides preload to ensure the stability of the switch trigger signal.

[0042] In summary, this application achieves precise and reliable triggering of two independent signal switches within the same operating step through the pressing action of a single pressure bar 1. Specifically, this application optimizes the structural design of the pressure bar 1, enabling it to physically contact and activate two spatially separated microswitches within a single effective operating stroke. When both switches are correctly triggered, the system determines it as a valid operating command.

[0043] Simultaneously, this application also incorporates structural reinforcement design for the pressure strip 1 itself, including improving the material and increasing its size to enhance overall rigidity. Therefore, this application can effectively suppress unexpected displacement or elastic deformation caused by the weight of the cable, frequent insertion and removal, or accidental collisions, ensuring the accuracy of the locking action. This provides a stable and reliable physical basis for dual-signal triggering and is applicable to various current scenarios.

[0044] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dual-switch, dual-signal triggering device for an automotive charging gun, comprising a charging gun housing, wherein the triggering device is installed inside the charging gun housing, characterized in that, The triggering device includes: A pressure strip is rotatably connected to the charging gun housing, and the pressure strip is provided with a first pressing protrusion and a second pressing protrusion; A switch bracket is installed inside the charging gun housing and located on the underside of the pressure strip; A first micro switch is mounted on the switch bracket and corresponds to the first pressing protrusion. The second micro switch is mounted on the switch bracket and corresponds to the second pressing protrusion. The second micro switch is located on one side of the first micro switch.

2. The double switch double signal trigger device of the automobile charging gun according to claim 1, characterized in that, The pressure strip is made of glass fiber reinforced nylon with a thickness of 8-12mm.

3. The double switch double signal trigger device of claim 1, wherein, The pressure strip includes a locking part, a pressing part, and a receiving part. One end of the locking part passes through the charging gun housing, and the end of the locking part located outside the charging gun housing is connected to a locking hook. The first pressing protrusion and the second pressing protrusion are both connected to the pressing part. A button is provided on the receiving part, and the button protrudes from the charging gun housing.

4. The double-switch double-signal trigger device of claim 3, wherein, The pressing part is provided with reinforcing ribs, which extend along the length of the pressing strip.

5. The double-switch double-signal trigger device of claim 3 or 4, characterized in that, The pressing surface of the pressing part is provided with a micro-textured anti-slip layer, which is an interlaced diamond grid with a depth of 0.05-0.1mm.

6. The double switch double signal trigger device of claim 3, wherein, The pressing surface of the pressing part is also provided with a groove, which is located between the first pressing protrusion and the second pressing protrusion, and the groove depth is 0.8-1.2mm.

7. The double switch double signal trigger device of claim 3, wherein, The pressure-bearing part is provided with a compensation slope, and the inclination angle of the compensation slope is 10°-15°.

8. The double switch double signal trigger device of claim 1, wherein, The height difference between the first pressing protrusion and the second pressing protrusion is 0.5-1.5mm, and both are made of hemispherical ceramic composite material.

9. The double switch double signal trigger device of claim 1, wherein, The switch bracket is provided with a pair of slots, and the first micro switch and the second micro switch are fixed in the slots by interference fit.

10. The double-switch double-signal trigger device of claim 9, wherein, The card slot sidewall is provided with an elastic damping sheet, which is made of silicone.

Images