Overload protection structure of alternating current charging pile

Abstract

The utility model discloses an overload protection structure of an alternating current charging pile, and relates to the technical field of charging piles, in particular to the overload protection structure of the alternating current charging pile, which comprises a fuse, a fixing mechanism is arranged on the fuse and is used for fixing the fuse, and the fixing mechanism comprises a mounting assembly, a clamping assembly and a locking assembly, comprising a mounting plate arranged below the fuse, mounting seats fixed at the two ends of the mounting plate, plugs slidably mounted in the mounting seats in a penetrating manner, spring pieces mounted on the two sides in the mounting seats, and first inclined planes arranged at the tops of the outer ends of the plugs; the positioning assembly comprises a positioning frame arranged above the fuse, and a slot formed in the inner wall of the lower end of the positioning frame is matched with the plug; when the fuse body in the fuse is fused and needs to be replaced, the plug is driven to retract into the mounting seat by shifting the shifting block, so that the positioning frame is unfixed, the positioning assembly can be detached and separated from the mounting assembly, and the fuse fixed between the positioning assembly and the mounting assembly is taken down.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, in particular to an overload protection structure of an AC charging pile. Background Art

[0002] Some electric vehicles often encounter unstable current in the power grid when charging. Since the battery of an electric vehicle has a rated current, when the current in the power grid is unstable and the current suddenly increases to exceed the rated current, it will cause equipment damage or safety hazards.

[0003] After checking the public (announcement) number: CN219564830U, an overcurrent protection device for an AC charging pile is disclosed. This technology discloses "an overcurrent protection device for an AC charging pile, including an upper shell and a lower shell, both sides of the upper end surface of the upper shell are fixedly provided with annular protrusions, the inside of the annular protrusion is provided with a mounting groove, and the upper end surface of the lower shell is fixedly provided with a mounting block" and other technical solutions, which have "the overcurrent protection device can be conveniently disassembled and repaired at any time, and its use efficiency is improved" and other technical effects;

[0004] Fuses are the actuators in the overload protection structure. They can quickly and reliably cut off the circuit to protect the safety of the charging pile and charging equipment. Usually, the fuse is mounted on a mounting plate and secured firmly in place inside the charging pile using screws and nuts. However, the relatively compact internal space of the charging pile causes certain inconveniences and complexities in the disassembly and assembly process of the fuse. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an overload protection structure for an AC charging pile, which has the characteristics of being able to quickly disassemble and assemble the fuse from a fixing mechanism, making it easy to replace the fuse after the fuse element has melted.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: an overload protection structure of an AC charging pile, including a fuse, a fixing mechanism is provided on the fuse and is used to fix the fuse, and the fixing mechanism includes:

[0007] The mounting assembly includes a mounting plate arranged below the fuse, a mounting seat fixed at both ends of the mounting plate, a plug slidably installed inside the mounting seat, spring sheets installed at both sides of the mounting seat, and a first inclined surface opened at the top of the outer end of the plug;

[0008] The positioning assembly comprises a positioning frame arranged above the fuse, a slot provided on the inner wall of the lower end of the positioning frame and matched with the plug, and a second inclined surface provided on the bottom of the lower end of the positioning frame and matched with the first inclined surface.

[0009] Preferably, the mounting assembly further comprises a dial head fixed on the top of the plug, and the upper end of the dial head extends to the outside of the mounting seat.

[0010] Preferably, the mounting assembly further comprises waist-shaped holes formed on both sides of the mounting plate.

[0011] Preferably, the mounting assembly further comprises a groove formed on the outer wall of the mounting seat and matched with the lower end of the positioning frame.

[0012] Preferably, the positioning assembly further comprises circular holes formed at the upper end and both sides of the positioning frame, a polyurethane pad mounted at the upper end of the inner wall of the positioning frame, and protrusions fixed at the top and both sides of the outer wall of the polyurethane pad and matched with the circular holes.

[0013] Preferably, the fuse includes inner caps fixed at both ends of the porcelain tube, a fuse installed inside the porcelain tube, and the two ends of the fuse are respectively fixed to the inner caps at both ends, an outer cap is mounted on the inner cap, a gasket is installed inside the outer cap, and contacts are fixed at the outer end of the outer cap by rivets.

[0014] Beneficial Effects

[0015] The utility model provides an overload protection structure for an AC charging pile. Compared with the prior art, it has the following beneficial effects:

[0016] (1) When the fuse element in the fuse is blown and needs to be replaced, the plug is retracted into the mounting seat by turning the dial head, thereby releasing the fixation of the positioning frame, so that the positioning assembly can be disassembled and separated from the mounting assembly, thereby removing the fuse fixed therebetween.

[0017] (2) When installing a new fuse, the fuse is placed between the mounting seats on both sides of the top of the mounting plate, and the two ends of the positioning frame are respectively inserted into the mounting seats at both ends, so that the lower end of the positioning frame is squeezed to the mounting seat by the second inclined surface cooperating with the first inclined surface until the outer ring of the lower end of the positioning frame is inserted into the groove on the mounting seat, and the pressure of the spring sheet rebounding pushes the plug out and inserts it into the slot, thereby fixing the positioning assembly on the mounting assembly and fixing the fuse between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a disassembled diagram of the utility model;

[0020] Figure 3 This is a disassembled diagram of the positioning component in the utility model;

[0021] Figure 4 It is a schematic diagram of the structure inside the mounting plate of the utility model;

[0022] Figure 5 This is a disassembled diagram of the fuse in the utility model.

[0023] In the figure: 1. fuse; 11. porcelain tube; 12. inner cap; 13. fuse; 14. outer cap; 15. gasket; 16. rivet; 17. contact; 2. fixing mechanism; 21. mounting assembly; 211. mounting plate; 212. mounting seat; 213. groove; 214. plug; 215. spring sheet; 216. first inclined surface; 217. dial head; 218. waist-shaped hole; 22. positioning assembly; 221. positioning frame; 222. slot; 223. second inclined surface; 224. round hole; 225. polyurethane pad; 226. bump. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The utility model provides a technical solution for an overload protection structure of an AC charging pile: an overload protection structure of an AC charging pile, comprising a fuse 1, a fixing mechanism 2 is provided on the fuse 1 and is used to fix the fuse 1, and the fixing mechanism 2 comprises:

[0026] The mounting assembly 21 comprises a mounting plate 211 disposed below the fuse 1, a mounting seat 212 fixed at both ends of the mounting plate 211, a plug 214 slidably installed inside the mounting seat 212, spring pieces 215 installed at both sides of the mounting seat 212, and a first inclined surface 216 provided at the top of the outer end of the plug 214;

[0027] The positioning assembly 22 includes a positioning frame 221 disposed above the fuse 1 , a slot 222 formed on the inner wall of the lower end of the positioning frame 221 and matched with the plug 214 , and a second inclined surface 223 formed on the bottom of the lower end of the positioning frame 221 and matched with the first inclined surface 216 .

[0028] In this embodiment, when installing a new fuse 1, the fuse 1 is placed between the mounting seats 212 on both sides of the top of the mounting plate 211, and the two ends of the positioning frame 221 are respectively inserted into the mounting seats 212 at both ends, so that the lower end of the positioning frame 221 is squeezed by the second inclined surface 223 and the first inclined surface 216 to squeeze the plug 214 to shrink to the mounting seat 212, until the outer ring of the lower end of the positioning frame 221 is inserted into the groove 213 on the mounting seat 212, and the pressure of the rebound of the spring sheet 215 pushes the plug 214 to extend and insert into the slot 222, thereby fixing the positioning component 22 on the mounting component 21, and fixing the fuse 1 between the two.

[0029] Specifically, the mounting assembly 21 further includes a dial head 217 fixed on the top of the plug 214 , and the upper end of the dial head 217 extends to the outside of the mounting seat 212 .

[0030] In this embodiment, when the fuse 13 in the fuse 1 is blown and needs to be replaced, the plug 214 is driven to retract into the mounting seat 212 by turning the dial head 217, thereby releasing the fixation of the positioning frame 221, so that the positioning component 22 can be disassembled and separated from the mounting component 21, thereby removing the fuse 1 fixed therebetween.

[0031] Specifically, the mounting assembly 21 further includes waist-shaped holes 218 formed on both sides of the mounting plate 211 .

[0032] In this embodiment, the mounting plate 211 can be fixed at a suitable position in the charging pile through the waist-shaped hole 218 and bolts.

[0033] Specifically, the assembly 21 further includes a groove 213 formed on the outer wall of the mounting seat 212 and matched with the lower end of the positioning frame 221 .

[0034] In this embodiment, when the installation assembly 21 and the positioning assembly 22 are installed, the lower end of the positioning frame 221 is embedded in the groove 213 for positioning.

[0035] Specifically, the positioning assembly 22 also includes circular holes 224 opened on the upper end and both sides of the positioning frame 221, a polyurethane pad 225 installed on the upper end of the inner wall of the positioning frame 221, and protrusions 226 fixed on the top and both sides of the outer wall of the polyurethane pad 225 and matched with the circular holes 224.

[0036] In this embodiment, after the polyurethane pad 225 is installed on the positioning frame 221, the protrusion 226 is inserted into the circular hole 224 to position the polyurethane pad 225 to prevent its position displacement; and the positioning frame 221 can be buffered by the polyurethane pad 225 when fixing the fuse 1.

[0037] Specifically, the fuse 1 includes an inner cap 12 fixedly installed at both ends of a porcelain tube 11, a fuse 13 installed inside the porcelain tube 11, and both ends of the fuse 13 are respectively fixed to the inner caps 12 at both ends, an outer cap 14 is sleeved and installed on the inner cap 12, and a gasket 15 is installed inside the outer cap 14, and a contact 17 is fixed at the outer end of the outer cap 14 by a rivet 16.

[0038] In this embodiment, the fuse 1 is connected to the circuit through the contacts 17 at both ends. When the current in the circuit exceeds the rated current of the fuse 1, the fuse 13 will heat up until it melts, preventing the overload current from continuing to pass, thereby protecting the electrical equipment and circuits from damage.

[0039] The working principle and use process of the utility model are as follows: first, the mounting plate 211 can be fixed at a suitable position in the charging pile through the waist-shaped hole 218 with bolts; then the fuse 1 is placed between the mounting seats 212 on both sides of the top of the mounting plate 211, and then the two ends of the positioning frame 221 are respectively inserted into the mounting seats 212 at both ends, so that the lower end of the positioning frame 221 squeezes the plug 214 to shrink to the mounting seat 212 through the second inclined surface 223 and the first inclined surface 216, until the outer ring of the lower end of the positioning frame 221 is inserted into the groove 213 on the mounting seat 212, and the plug 214 is pushed out and inserted into the slot 222 by the rebound pressure of the spring sheet 215, thereby fixing the positioning component 22 on the mounting component 21, and fixing the fuse 1 between the two;

[0040] When the fuse 13 in the fuse 1 is blown and needs to be replaced, the plug 214 is driven to retract into the mounting seat 212 by turning the dial head 217, thereby releasing the fixation of the positioning frame 221, so that the positioning assembly 22 can be disassembled and separated from the mounting assembly 21, thereby removing the fuse 1 fixed therebetween.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An overload protection structure for an AC charging pile, characterized in that: The invention comprises a fuse (1), wherein a fixing mechanism (2) is provided on the fuse (1) and is used to fix the fuse (1), wherein the fixing mechanism (2) comprises: The mounting assembly (21) comprises a mounting plate (211) arranged below the fuse (1), a mounting seat (212) fixed at both ends of the mounting plate (211), a plug (214) slidably installed passing through the interior of the mounting seat (212), spring sheets (215) installed at both sides of the interior of the mounting seat (212), and a first inclined surface (216) provided at the top of the outer end of the plug (214); The positioning assembly (22) comprises a positioning frame (221) arranged above the fuse (1), a slot (222) provided on the inner wall of the lower end of the positioning frame (221) and matched with the plug (214), and a second inclined surface (223) provided on the bottom of the lower end of the positioning frame (221) and matched with the first inclined surface (216).

2. The overload protection structure of an AC charging pile according to claim 1, characterized in that: The mounting assembly (21) further comprises a dial head (217) fixed on the top of the plug (214), and the upper end of the dial head (217) extends to the outside of the mounting seat (212).

3. The overload protection structure of an AC charging pile according to claim 1, characterized in that: The mounting assembly (21) further comprises waist-shaped holes (218) formed on both sides of the interior of the mounting plate (211).

4. The overload protection structure of an AC charging pile according to claim 1, characterized in that: The mounting assembly (21) further comprises a groove (213) formed on the outer wall of the mounting seat (212) and matched with the lower end of the positioning frame (221).

5. The overload protection structure of an AC charging pile according to claim 1, characterized in that: The positioning assembly (22) further comprises a circular hole (224) formed at the upper end and both sides of the positioning frame (221), a polyurethane pad (225) mounted at the upper end of the inner wall of the positioning frame (221), and a protrusion (226) fixed at the top and both sides of the outer wall of the polyurethane pad (225) and matched with the circular hole (224).

6. The overload protection structure of an AC charging pile according to claim 1, characterized in that: The fuse (1) comprises inner caps (12) fixedly mounted at both ends of a porcelain tube (11), a fuse (13) mounted inside the porcelain tube (11), and both ends of the fuse (13) are respectively fixed to the inner caps (12) at both ends. An outer cap (14) is sleeved and mounted on the inner cap (12), and a liner (15) is installed inside the outer cap (14). The outer end of the outer cap (14) is fixed with a contact (17) by a rivet (16).

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