Linear charging line with power-off protection function

Abstract

The utility model provides a linear charging line with a power-off protection function, which comprises a charger body, a mechanical power-off mechanism, an arc extinguishing mechanism and a collection box, and is characterized in that the mechanical power-off mechanism comprises a first central shaft, a shifting plate, a shifting rod, a first metal sheet and a second central shaft, one end of the first central shaft is rotatably connected to the middle of the shifting plate, and the other end of the first central shaft is rotatably connected to the arc extinguishing mechanism; one end of the second center shaft is rotationally connected to the first metal sheet, the right end of the shifting plate is fixedly connected to one end of the shifting rod, and when a circuit is short-circuited and overloaded, the current of the induction coil is increased, a large magnetic field is generated, and the internal metal ejector pin is pushed to move downwards along the limiting sleeve; when the metal ejector pin presses a switch at the top end of the limiting buckle, one end of the limiting buckle slides out of a limiting hole formed in the rear shell, the metal sheet rotates downwards along the second center shaft under the action of the adjusting spring, and the circuit is disconnected.

Description

Technical Field

[0001] The utility model relates to a charging cable, in particular to a straight charging cable with a power-off protection function, and belongs to the technical field of straight charging cables. Background Art

[0002] A straight charging cable is a power cable whose plug is directly inserted into the interface of an electrical appliance, which has the advantages of being simple and convenient. The structure of a straight charging cable is generally composed of a conductor, an insulating layer, and an outer sheath. The conductor is the core part of the charging cable, generally made of copper wire or aluminum wire, which has good conductivity and can effectively transmit electrical energy. The function of the insulating layer is to prevent the conductor from contacting the external environment to avoid leakage and short circuit. The outer sheath is to protect the conductor and the insulating layer from damage by the external environment, and is usually made of plastic or rubber materials. The selection and combination of these materials determine the safety and durability of the charging cable.

[0003] The existing straight charging cable lacks a power-off protection function, which is prone to safety hazards when the circuit is overloaded or short-circuited. In addition, it is difficult to eliminate the internal arc when the circuit is overloaded, resulting in damage to the charging cable. Therefore, a straight charging cable with a power-off protection function is proposed. Utility Model Content

[0004] In view of this, the utility model provides a straight charging cable with a power-off protection function to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the embodiment of the utility model is implemented as follows: a linear charging cable with a power-off protection function, comprising a charger body, a mechanical power-off mechanism, an arc extinguishing mechanism and a collection box, wherein the mechanical power-off mechanism comprises a first central axis, a dial plate, a dial rod, a first metal sheet and a second central axis, wherein one end of the first central axis is rotatably connected to the middle of the dial plate, one end of the second central axis is rotatably connected to the first metal sheet, and the right end of the dial plate is fixedly connected to one end of the dial rod;

[0006] The arc extinguishing mechanism comprises an induction coil, an arc guide plate and an arc extinguishing plate. One end of the induction coil is fixedly connected to the bottom end of the arc guide plate, and the rear side of the outer wall of the arc extinguishing plate is fixedly connected to the front end of the rear shell.

[0007] Further preferably, the charger body includes a front shell, a slide rail, a rear shell, a plug, a charging cable body, a charging head and a limiting hole, the rear end of the front shell is fixedly connected to the front end of the rear shell, the top end of the rear shell is fixedly connected to the bottom end of the charging head, and an arc-shaped slide rail is opened in the middle of the front shell, and the inner part of the slide rail is slidably connected to the outer wall of the lever.

[0008] Further preferably, the bottom end of the rear shell is fixedly connected to the top end of the charging cable body, the bottom end of the charging cable body is fixedly connected to the charging head, and a limiting hole is opened on the outer wall of the rear shell.

[0009] Further preferably, the mechanical power-off mechanism also includes a limit plate, a limit buckle, an insulating shielding frame, an adjusting spring, a connecting plate, a limit sleeve, a metal pin and a reset spring, the rear side of the insulating shielding frame is fixedly connected to the interior of the rear shell, the interior of the rear shell is fixedly connected to the rear end of the insulating plate near the top of the insulating shielding frame, the interior of the rear shell is fixedly connected to the rear end of the connecting plate, the top of the connecting plate is fixedly connected to one end of the adjusting spring, and one end of the adjusting spring is fixedly connected to the bottom end of the first metal sheet.

[0010] Further preferably, the interior of the first metal sheet is fixedly connected to the outer wall of the limiting buckle, the interior of the limiting buckle is slidably connected to the interior of the limiting hole, the top of the insulating shielding frame is fixedly connected to the bottom end of the limiting sleeve, the interior of the limiting sleeve is fixedly connected to the bottom end of the reset spring, and the top of the reset spring is fixedly connected to the outer wall of the metal ejector pin.

[0011] Further preferably, the bottom end of the metal ejector pin is connected to the middle of the insulating shielding frame, the bottom end of the metal ejector pin is located at the top end of the limiting buckle, and the top end of the metal sheet is tightly fitted to the bottom end of the dial plate.

[0012] Further preferably, the arc extinguishing mechanism also includes a metal wire, an induction coil and an insulating plate, a plurality of arc extinguishing plates are arranged between the insulating plate and the insulating shielding frame, the bottom end of the induction coil is fixedly connected to the top end of the insulating shielding frame, the top and bottom ends of the induction coil are respectively fixedly connected to one end of the metal wire, the bottom end of the metal wire is tightly fitted to the top end of the metal sheet, and the inner part of the induction coil is sleeved on the outer wall of the limiting sleeve.

[0013] Further preferably, the inner right side of the rear shell is fixedly connected to the bottom end of the collection box, the bottom end of the metal wire is fixedly connected to the top end of the charging cable body, the top end of the metal wire is fixedly connected to the bottom end of the tap, and the outer wall of the lever is fixedly connected to the middle part of the limit plate.

[0014] The utility model embodiment adopts the above technical solution, which has the following advantages:

[0015] 1. When a short circuit or overload occurs in the circuit, the current of the induction coil will increase, generating a larger magnetic field, and pushing the internal metal ejector pin to move downward along the limit sleeve, and squeezing the return spring inside the limit sleeve to contract. When the metal ejector pin presses the switch at the top of the limit buckle, one end of the limit buckle slides out from the limit hole opened inside the rear shell, causing the metal sheet to rotate downward along the second central axis under the action of the adjustment spring, disconnecting the circuit, and the top of the metal sheet pushes the dial plate to rotate along the first central axis, and pushes the dial rod to move downward;

[0016] Second, due to the excessive current during a fault, air discharge generates an arc. By setting an arc extinguishing plate inside the rear shell, the resistance increases with the increase of length and decreases with the increase of area. When the arc passes through the arc extinguishing plate, it is divided into small pieces and then disappears;

[0017] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural diagram of the entire utility model;

[0020] Figure 2 This is the internal structure diagram of the charger of the utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the interior of the charger of the utility model;

[0022] Figure 4 It is a schematic diagram of the metal ejector of the utility model.

[0023] Figure numerals: 1. charger body; 101. front shell; 102. slide rail; 103. rear shell; 104. plug; 105. charging cable body; 106. charging head; 107. limit hole; 2. mechanical power-off mechanism; 201. first center axis; 202. dial plate; 203. dial rod; 204. limit plate; 205. metal sheet; 206. second center axis; 207. limit buckle; 208. insulating shielding frame; 209. adjusting spring; 2010. connecting plate; 2011. limit sleeve; 2012. metal ejector pin; 2013. reset spring; 3. arc extinguishing mechanism; 301. metal wire; 302. induction coil; 303. arc guide plate; 304. arc extinguishing plate; 305. insulating plate; 4. collecting box. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0026] Example

[0027] like Figure 1 - Figure 4 As shown, the embodiment of the utility model provides a straight charging cable with a power-off protection function, including a charger body 1, a mechanical power-off mechanism 2, an arc extinguishing mechanism 3 and a collection box 4, wherein the mechanical power-off mechanism 2 includes a first central axis 201, a dial plate 202, a dial rod 203, a first metal sheet 205 and a second central axis 206, wherein one end of the first central axis 201 is rotatably connected to the middle of the dial plate 202, one end of the second central axis 206 is rotatably connected to the first metal sheet 205, and the right end of the dial plate 202 is fixedly connected to one end of the dial rod 203. When a short circuit or overload occurs in the circuit, the current of the induction coil 302 will increase, generating a larger magnetic field, and pushing the internal metal ejector pin 2012 to move downward along the limit sleeve 2011, and the top of the metal sheet 205 pushes the dial plate 202 to rotate along the first central axis 201, and pushes the dial rod 203 to move downward;

[0028] The arc extinguishing mechanism 3 includes an induction coil 302, an arc guide plate 303 and an arc extinguishing plate 304. One end of the induction coil 302 is fixedly connected to the bottom end of the arc guide plate 303. The rear side of the outer wall of the arc extinguishing plate 304 is fixedly connected to the front end of the rear shell 103. When a fault occurs, the current is too large to cause air discharge and generate an arc. The arc extinguishing plate 304 is arranged inside the rear shell 103. Since the resistance increases with the increase of length and decreases with the increase of area, the arc is divided into small pieces and then disappears after passing through the arc extinguishing plate 304.

[0029] In one embodiment, specifically, the charger body 1 includes a front shell 101, a slide rail 102, a rear shell 103, a plug 104, a charging cable body 105, a charging head 106 and a limiting hole 107. The rear end of the front shell 101 is fixedly connected to the front end of the rear shell 103, and the top of the rear shell 103 is fixedly connected to the bottom of the charging head 106. An arc-shaped slide rail 102 is opened in the middle of the front shell 101, and the inner part of the slide rail 102 is slidably connected to the outer wall of the lever 203. By inserting the plug 104 into the power cord tray, the current is conducted along the plug 104 and the metal wire 301 to the surface of the metal sheet 205, and the metal sheet 205 is then introduced into the charging cable body 105 and the charging head 106 through the metal wire 301.

[0030] In one embodiment, specifically, the bottom end of the rear shell 103 is fixedly connected to the top end of the charging cable body 105 , the bottom end of the charging cable body 105 is fixedly connected to the charging head 106 , and a limiting hole 107 is provided on the outer wall of the rear shell 103 .

[0031] In one embodiment, specifically, the mechanical power-off mechanism 2 also includes a limit plate 204, a limit buckle 207, an insulating shielding frame 208, an adjusting spring 209, a connecting plate 2010, a limit sleeve 2011, a metal ejector pin 2012 and a reset spring 2013. The rear side of the insulating shielding frame 208 is fixedly connected to the interior of the rear shell 103, and the interior of the rear shell 103 is fixedly connected to the rear end of the insulating plate 305 near the top of the insulating shielding frame 208. The interior of the rear shell 103 is fixedly connected to the rear end of the connecting plate 2010, and the top of the connecting plate 2010 is fixedly connected to one end of the adjusting spring 209. One end of the joint spring 209 is fixedly connected to the bottom end of the first metal sheet 205, and pushes the internal metal ejector pin 2012 to move downward along the limiting sleeve 2011, and squeezes the return spring 2013 inside the limiting sleeve 2011 to contract. When the metal ejector pin 2012 presses the switch at the top of the limiting buckle, one end of the limiting buckle 207 slides out from the limiting hole 107 opened inside the rear shell 103, so that the metal sheet 205 rotates downward along the second central axis 206 under the action of the adjusting spring 209, so that the circuit is disconnected, and the top of the metal sheet 205 pushes the dial plate 202 to rotate along the first central axis 201, and pushes the dial rod 203 to move downward.

[0032] In one embodiment, specifically, the interior of the first metal sheet 205 is fixedly connected to the outer wall of the limiting buckle 207, the interior of the limiting buckle 207 is slidably connected to the interior of the limiting hole 107, the top of the insulating shielding frame 208 is fixedly connected to the bottom end of the limiting sleeve 2011, the interior of the limiting sleeve 2011 is fixedly connected to the bottom end of the reset spring 2013, and the top of the reset spring 2013 is fixedly connected to the outer wall of the metal ejector pin 2012. When the metal ejector pin 2012 presses the switch at the top of the limiting buckle, one end of the limiting buckle 207 slides out from the limiting hole 107 opened in the rear shell 103, so that the metal sheet 205 rotates downward along the second center axis 206 under the action of the adjusting spring 209.

[0033] In one embodiment, specifically, the bottom end of the metal pin 2012 is connected to the middle of the insulating shielding frame 208, the bottom end of the metal pin 2012 is located at the top of the limiting buckle 207, and the top of the metal sheet 205 is tightly fitted to the bottom end of the dial plate 202 to prevent the arc from damaging the internal electrical components.

[0034] In one embodiment, specifically, the arc extinguishing mechanism 3 also includes a metal wire 301, an induction coil 302 and an insulating plate 305, a plurality of arc extinguishing plates 304 are arranged between the insulating plate 305 and the insulating shielding frame 208, the bottom end of the induction coil 302 is fixedly connected to the top of the insulating shielding frame 208, the top and the bottom of the induction coil 302 are respectively fixedly connected to one end of the metal wire 301, the bottom end of the metal wire 301 is tightly fitted to the top of the metal sheet 205, the inside of the induction coil 302 is sleeved on the outer wall of the limiting sleeve 2011, and the arc extinguishing plate 304 is arranged inside the rear shell 103, according to the resistance increasing with the increase of length and decreasing with the increase of area, when the arc passes through the arc extinguishing plate 304, it is divided into small pieces and then disappears.

[0035] In one embodiment, specifically, the inner right side of the rear shell 103 is fixedly connected to the bottom end of the collection box 4, the bottom end of the metal wire 301 is fixedly connected to the top end of the charging cable body 105, the top end of the metal wire 301 is fixedly connected to the bottom end of the tap, and the outer wall of the lever 203 is fixedly connected to the middle of the limit plate 204.

[0036] When the utility model is working: by inserting the plug 104 into the power cord tray to conduct electricity, the current is conducted along the plug 104 and the metal wire 301 to the surface of the metal sheet 205, and the metal sheet 205 is then introduced into the charging cable body 105 and the charging head 106 through the metal wire 301. When a short circuit or overload occurs in the circuit, the current of the induction coil 302 will increase, generating a larger magnetic field, and pushing the internal metal ejector pin 2012 to move downward along the limiting sleeve 2011, and squeezing the return spring 2013 inside the limiting sleeve 2011 to contract. When the metal ejector pin 2012 presses the switch at the top of the limiting buckle, one end of the limiting buckle 207 slides out from the limiting hole 107 opened inside the rear shell 103, so that the metal sheet 205 rotates downward along the second central axis 206 under the action of the adjusting spring 209, so that the circuit is disconnected, and the metal ejector pin 2012 is pressed. The top of the sheet 205 pushes the dial plate 202 to rotate along the first central axis 201, and pushes the dial rod 203 to move downward. Due to the excessive current during a fault, air discharge generates an arc. An arc extinguishing plate 304 is provided inside the rear shell 103. Since resistance increases with increasing length and decreases with increasing area, the arc is divided into small pieces after passing through the arc extinguishing plate 304 and then disappears. After the circuit inspection is restored, the dial rod 203 is pushed to slide along the slide rail 102. The movement of the dial rod 203 drives the dial plate 202 to squeeze the metal sheet 205 to move upward, and one end of the limit buckle 207 is set to a spherical shape. When the limit buckle 207 coincides with the limit hole 107, the metal block is in contact with the metal wire 301 at the bottom of the induction coil 302. A collection box 4 is provided inside the rear shell 103 to facilitate the collection of the charging cable body 105.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A straight charging cable with power-off protection function, comprising a charger body (1), a mechanical power-off mechanism (2), an arc extinguishing mechanism (3) and a collection box (4), characterized in that: The mechanical power-off mechanism (2) comprises a first central axis (201), a dial plate (202), a dial rod (203), a first metal sheet (205) and a second central axis (206); one end of the first central axis (201) is rotatably connected to the middle of the dial plate (202); one end of the second central axis (206) is rotatably connected to the first metal sheet (205); and the right end of the dial plate (202) is fixedly connected to one end of the dial rod (203); The arc extinguishing mechanism (3) comprises an induction coil (302), an arc guide plate (303) and an arc extinguishing plate (304); one end of the induction coil (302) is fixedly connected to the bottom end of the arc guide plate (303); and the rear side of the outer wall of the arc extinguishing plate (304) is fixedly connected to the front end of the rear shell (103).

2. The straight charging cable with power-off protection function according to claim 1, characterized in that: The charger body (1) comprises a front shell (101), a slide rail (102), a rear shell (103), a plug (104), a charging cable body (105), a charging head (106) and a limiting hole (107); the rear end of the front shell (101) is fixedly connected to the front end of the rear shell (103); the top end of the rear shell (103) is fixedly connected to the bottom end of the charging head (106); an arc-shaped slide rail (102) is provided in the middle of the front shell (101); the interior of the slide rail (102) is slidably connected to the outer wall of the lever (203).

3. The straight charging cable with power-off protection function according to claim 2, characterized in that: The bottom end of the rear shell (103) is fixedly connected to the top end of the charging cable body (105), the bottom end of the charging cable body (105) is fixedly connected to the charging head (106), and a limiting hole (107) is provided on the outer wall of the rear shell (103).

4. The linear charging cable with power-off protection function according to claim 1, characterized in that: The mechanical power-off mechanism (2) further comprises a limit plate (204), a limit buckle (207), an insulating shielding frame (208), an adjusting spring (209), a connecting plate (2010), a limit sleeve (2011), a metal ejector pin (2012) and a reset spring (2013); the rear side of the insulating shielding frame (208) is fixedly connected to the interior of the rear shell (103); the interior of the rear shell (103) close to the top of the insulating shielding frame (208) is fixedly connected to the rear end of the insulating plate (305); the interior of the rear shell (103) is fixedly connected to the rear end of the connecting plate (2010); the top of the connecting plate (2010) is fixedly connected to one end of the adjusting spring (209); and one end of the adjusting spring (209) is fixedly connected to the bottom end of the first metal sheet (205).

5. The straight charging cable with power-off protection function according to claim 4, characterized in that: The interior of the first metal sheet (205) is fixedly connected to the outer wall of the limiting buckle (207), the interior of the limiting buckle (207) is slidably connected to the interior of the limiting hole (107), the top end of the insulating shielding frame (208) is fixedly connected to the bottom end of the limiting sleeve (2011), the interior of the limiting sleeve (2011) is fixedly connected to the bottom end of the reset spring (2013), and the top end of the reset spring (2013) is fixedly connected to the outer wall of the metal ejector pin (2012).

6. The straight charging cable with power-off protection function according to claim 4, characterized in that: The bottom end of the metal ejector pin (2012) is connected to the middle of the insulating shielding frame (208), the bottom end of the metal ejector pin (2012) is located at the top end of the limit buckle (207), and the top end of the first metal sheet (205) is tightly fitted to the bottom end of the dial plate (202).

7. The straight charging cable with power-off protection function according to claim 1, characterized in that: The arc extinguishing mechanism (3) also includes a metal wire (301), an induction coil (302) and an insulating plate (305); a plurality of arc extinguishing plates (304) are arranged between the insulating plate (305) and the insulating shielding frame (208); the bottom end of the induction coil (302) is fixedly connected to the top end of the insulating shielding frame (208); the top and bottom ends of the induction coil (302) are respectively fixedly connected to one end of the metal wire (301); the bottom end of the metal wire (301) is tightly fitted to the top end of the first metal sheet (205); the inside of the induction coil (302) is sleeved on the outer wall of the limiting sleeve (2011); the bottom end of the metal wire (301) is fixedly connected to the top end of the charging cable body (105); and the top end of the metal wire (301) is fixedly connected to the bottom end of the plug (104).

8. The linear charging cable with power-off protection function according to claim 1, characterized in that: The inner right side of the rear shell (103) is fixedly connected to the bottom end of the collection box (4), and the outer wall of the shifting rod (203) is fixedly connected to the middle part of the limiting plate (204).

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