A self-resetting current and voltage protector with removable terminal protection cap
By designing a removable terminal protection cover on the current and voltage protector, and utilizing pins, guide bosses, and clip structures to achieve quick installation and removal, the problem of difficult maintenance of existing current and voltage protectors is solved, and heat dissipation performance is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HANNUO ELECTRIC CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-21
AI Technical Summary
Existing current and voltage protectors are not easy to repair, requiring complete removal of the protective cover for internal maintenance, and have poor heat dissipation performance.
A self-resetting current and voltage protector with a detachable terminal protective cover was designed. By setting a pin and a guide boss on the terminal cover, setting a pin hole on the base, and setting a guide groove on the top cover, quick installation and disassembly are achieved by using clips and snap-fit parts, and maintenance and heat dissipation are improved through the maintenance port.
This enables convenient repair and maintenance of the protector, improves flexibility, and enhances heat dissipation performance.
Smart Images

Figure CN224536899U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of voltage and current protectors, and particularly relates to a self-resetting current and voltage protector with a detachable terminal protective cover. Background Technology
[0002] Current and voltage protectors are protective devices used to monitor and control circuit voltage and current, mainly used in medium and low voltage generator sets and power lines. By real-time monitoring of voltage and current parameters, they trigger a protection mechanism to cut off the power supply and ensure equipment safety in the event of overvoltage, undervoltage, or overcurrent. However, existing current and voltage protectors are difficult to repair. When a fault occurs, the entire protective cover of the protector must be completely disassembled to access the internal components for repair or testing; furthermore, the integrated protective cover has poor heat dissipation. Therefore, there is an urgent need for those skilled in the art to propose a current and voltage protector with a removable protective cover for easy maintenance. Utility Model Content
[0003] In view of this, the present invention provides a self-resetting current and voltage protector with a detachable terminal protective cover to solve the above problems.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A self-resetting current and voltage protector with a detachable terminal protective cover includes: a protector body and terminal covers, a pair of terminal covers being respectively installed at both ends of the protector body; the protector body includes a top cover and a base, the top cover being fixedly installed on the base, the bottom end of the terminal cover being inserted into the base, and the top end of the terminal cover being snapped into the top cover.
[0006] Furthermore, a pair of pins are provided at the bottom of the terminal cover, and a pair of first clips are provided on the inner wall of the top of the terminal cover near the edge; a pair of pin holes are provided on the base, and the pins are inserted into the pin holes; a maintenance port is provided at the top of the top cover, and snap-fit parts are provided at both ends of the maintenance port, and the first clips snap-fit with the snap-fit parts.
[0007] Furthermore, a pair of second clips are provided on the inner wall of the top of the terminal cover away from the first clip, and a snap-fit hole is provided on the top of the top cover, and the second clips snap into the snap-fit hole.
[0008] Furthermore, the inner wall of the terminal cover is provided with a pair of guide protrusions, which are integrally formed with the pin; a pair of guide grooves are provided on both ends of the upper cover, which are aligned with the pin hole, and the guide protrusions slide in the guide grooves. The upper cover limits the terminal cover by the cooperation of the guide protrusions and the guide grooves.
[0009] Furthermore, the terminal cover is provided with a wiring port, which corresponds to the through hole on the upper cover.
[0010] Furthermore, the middle part of the top cover extends upward to form a protrusion, and the protrusion is provided with display screen mounting holes and function button mounting holes.
[0011] Furthermore, it also includes an extension accessory that snaps onto the sidewalls of the top cover and the base.
[0012] The beneficial effects of this utility model are as follows:
[0013] This invention features a terminal cover with a pin and a guide boss, a pin hole on the base, and a guide groove on the top cover, facilitating the guidance and positioning of the terminal cover during installation on the protector body. The first and second clips on the terminal cover, along with the snap-fit parts and snap-fit holes on the top cover, enable quick installation and easy disassembly of the terminal cover. After disassembly, the current and voltage protector can be maintained, inspected, and tested through the maintenance port, improving flexibility. The maintenance port also enhances the heat dissipation performance of the current and voltage protector. Attached Figure Description
[0014] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of a self-resetting current and voltage protector with a removable terminal protective cover.
[0016] Figure 2 A schematic diagram of a self-resetting current and voltage protector with a removable terminal protective cover when there is no terminal cover.
[0017] Figure 3 A top view of a self-resetting current and voltage protector with a removable terminal protective cover;
[0018] Figure 4 for Figure 3 AA section view;
[0019] Figure 5 for Figure 3 BB cross-sectional view;
[0020] Figure 6 A three-dimensional view of the terminal cover Figure 1 ;
[0021] Figure 7 A three-dimensional view of the terminal cover Figure 2 ;
[0022] In the figure:
[0023] 1-Protector body, 11-Top cover, 111-Maintenance port, 112-Snap-fit part, 113-Snap-fit hole, 114-Guide groove, 12-Base, 121-Pin hole, 2-Terminal cover, 21-Pin, 22-First clip, 23-Second clip, 24-Guide boss, 25-Wiring port, 3-Extension accessories. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] See attached document Figure 1-7 This utility model provides a self-resetting current and voltage protector with a detachable terminal protective cover, comprising: a protector body 1 and terminal covers 2, with a pair of terminal covers 2 respectively installed at both ends of the protector body 1; the protector body 1 includes an upper cover 11 and a base 12, the upper cover 11 being fixedly installed on the base 12, the bottom end of the terminal cover 2 being inserted into the base 12, and the top end of the terminal cover 2 being snapped into the upper cover 11. The terminal cover 2 is provided with a wiring port 25, which corresponds to a through hole on the upper cover 11. The middle part of the upper cover 11 extends upward to form a protrusion, on which a display screen mounting hole and a function button mounting hole are provided.
[0026] In a preferred embodiment, a pair of pins 21 are provided at the bottom of the terminal cover 2, and a pair of first clips 22 are provided on the inner wall of the top of the terminal cover 2 near the edge; a pair of pin holes 121 are provided on the base 12, and the pins 21 are inserted into the pin holes 121; a maintenance port 111 is provided at the top of the top of the cover 11, and a snap-fit part 112 is provided at both ends of the maintenance port 111, and the first clips 22 are snap-fitted into the snap-fit part 112.
[0027] In a preferred embodiment, a pair of second clips 23 are provided on the inner wall of the top of the terminal cover 2 away from the first clip 22, and a snap-fit hole 113 is provided on the top of the upper cover 11, and the second clips 23 snap-fit into the snap-fit hole 113.
[0028] In a preferred embodiment, the inner wall of the terminal cover 2 is provided with a pair of guide protrusions 24, which are integrally formed with the pin 21; a pair of guide grooves 114 are provided on both side walls of the upper cover 11, which are aligned with the pin hole 121, and the guide protrusions 24 slide in the guide grooves 114. The upper cover 11 limits the terminal cover 2 through the cooperation of the guide protrusions 24 and the guide grooves 114.
[0029] In a preferred embodiment, a self-resetting current and voltage protector with a removable terminal protective cover further includes an extension attachment 3, which snaps onto the side wall of the upper cover 11 and the base 12. The extension attachment 3 allows for the addition of wiring ports or terminals, eliminating the need for an additional voltage and current protector and saving costs.
[0030] Example
[0031] In use, first install the terminal cover 2 at one end, and then install the terminal cover 2 at the other end. Specifically, align the pin 21 at the bottom of the terminal cover 2 vertically downwards with the pin hole 121 on the base 12, slide the terminal cover 2 downwards, so that the pin 21 and the guide boss 24 slide downwards in the guide groove 114 of the upper cover 11 until the pin 21 enters the pin hole 121, and the first clip 22 and the second clip 23 at the top of the end cover respectively engage with the engagement part 112 and the engagement hole 113.
[0032] The above descriptions are merely specific embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
[0033] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A self-resetting current and voltage protector with a detachable terminal protective cover, characterized in that, include: The protector body (1) and the terminal cover (2) are respectively installed at both ends of the protector body (1); the protector body (1) includes a top cover (11) and a base (12), the top cover (11) is fixedly installed on the base (12), the bottom end of the terminal cover (2) is inserted into the base (12), and the top end of the terminal cover (2) is snapped into the top cover (11).
2. A self-resetting current and voltage protector with a detachable terminal protective cover according to claim 1, characterized in that, The terminal cover (2) has a pair of pins (21) at its bottom end and a pair of first clips (22) on the inner wall near the edge of the top of the terminal cover (2). The base (12) has a pair of pin holes (121) and the pins (21) are inserted into the pin holes (121). The top of the cover (11) has a maintenance port (111) and the two ends of the maintenance port (111) have snap-fit parts (112) and the first clips (22) are snap-fitted into the snap-fit parts (112).
3. A self-resetting current and voltage protector with a detachable terminal protective cover according to claim 2, characterized in that, A pair of second clips (23) are provided on the inner wall of the top of the terminal cover (2) away from the first clip (22), and a snap-fit hole (113) is provided on the top of the upper cover (11), and the second clips (23) snap-fit with the snap-fit hole (113).
4. A self-resetting current and voltage protector with a detachable terminal protective cover according to claim 2, characterized in that, The inner wall of the terminal cover (2) is provided with a pair of guide bosses (24), which are integrally formed with the pin (21); the two side walls of the upper cover (11) are provided with a pair of guide grooves (114), which are aligned with the pin hole (121), and the guide bosses (24) slide in the guide grooves (114). The upper cover (11) limits the terminal cover (2) by the cooperation of the guide bosses (24) and the guide grooves (114).
5. A self-resetting current and voltage protector with a detachable terminal protective cover according to claim 1, characterized in that, The terminal cover (2) is provided with a wiring port (25), which corresponds to the through hole on the upper cover (11).
6. A self-resetting current and voltage protector with a detachable terminal protective cover according to claim 1, characterized in that, The middle part of the upper cover (11) extends upward to form a protrusion, and the protrusion is provided with a display screen mounting hole and a function button mounting hole.
7. A self-resetting current and voltage protector with a detachable terminal protective cover according to claim 1, characterized in that, It also includes an extension attachment (3), which snaps onto the sidewalls of the top cover (11) and the base (12).