Miniature circuit breaker convenient to install

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a miniature circuit breaker convenient to install, which comprises a circuit breaker body and a bearing guide rail seat, the rear side of the circuit breaker body is provided with a switching clamping groove, and the bottom of the inner cavity of the switching clamping groove is provided with a guide rail seat locking assembly; the guide rail seat locking assembly comprises a liftable guide rail clamping seat, an adjusting bolt is arranged at the center of the bottom of the guide rail clamping seat, and positioning guide columns are symmetrically arranged at the bottom of the guide rail clamping seat by taking the adjusting bolt as an axis pair. And the guide rail clamping seat is pushed to move up and down in the adapter clamping groove, so that the size of the notch of the adapter clamping groove is changed to adapt to the sizes of different bearing guide rail seats, and the problem that the size of the clamping groove behind the circuit breaker body is larger than the mounting size between the bearing guide rail seats is effectively solved. Therefore, the problem that the circuit breaker body cannot be installed according to bearing guide rail seats with different sizes is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a small circuit breaker which is easy to install. Background Art

[0002] The small leakage circuit breaker is a current-limiting circuit breaker with overload and short-circuit protection. It is suitable for ground short-circuit protection of industrial and commercial lighting distribution systems with AC 50Hz, single-pole voltage 230V and below, two-, three-, and four-pole voltage 400V and below. It can also be used for infrequent on-off switching of lines under normal circumstances. The circuit breaker has beautiful appearance, small size, light weight, high breaking capacity, fast tripping, rail installation, and the housing and components are made of highly flame-retardant and impact-resistant plastics, with excellent and reliable performance. At the same time, different leakage circuit breakers are selected according to the different requirements of direct contact and indirect contact electric shock protection. At present, there are small circuit breakers in the market that are used in combination with a circuit breaker body and a mounting rail seat. The installation process is that the slot on the back of the circuit breaker body is clamped on the mounting rail seat, and then fixed to the mounting rail seat by bolts, thereby realizing the installation of the mounting rail seat. While it brings portability, it also has some shortcomings. Specifically, the size of the slot on the back of the circuit breaker body is larger than the installation size between the mounting rail seats, which results in the circuit breaker body being unable to be installed according to mounting rail seats of different sizes. Therefore, a small circuit breaker that is easy to install is needed to improve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a small circuit breaker that is easy to install, so as to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A small circuit breaker that is easy to install, comprising a circuit breaker body and a guide rail seat, wherein a transfer card slot is arranged at the rear side of the circuit breaker body, and a guide rail seat locking assembly is arranged at the bottom of the inner cavity of the transfer card slot;

[0006] The guide rail seat locking assembly includes a liftable guide rail seat, an adjusting bolt is arranged at the bottom center of the guide rail seat, and positioning guide pillars are symmetrically arranged at the bottom of the guide rail seat based on the adjusting bolt as the axis. The positioning guide pillars are slidably connected to the inside of the bottom of the inner cavity of the adapter slot with a positioning hole, and an inner countersunk threaded hole is arranged on the circuit breaker body corresponding to the adjusting bolt.

[0007] As a preferred solution of the utility model, an upper V-shaped notch is provided at the top of the inner cavity of the adapter card slot and corresponds to the upper side of the receiving guide rail seat, wherein the side of the receiving guide rail seat is clamped in the interior of the upper V-shaped notch.

[0008] As a preferred solution of the utility model, a lower V-shaped groove is provided on the end surface of the guide rail holder and corresponds to the lower side of the guide rail holder, wherein the lower side of the guide rail holder is clamped in the lower V-shaped groove.

[0009] As a preferred solution of the utility model, the left side wall of the guide rail holder and the side wall of the inner cavity of the adapter card slot are matched in a clearance fit, and the internally countersunk threaded hole and the inner cavity of the adapter card slot are connected.

[0010] As a preferred solution of the utility model, the adjusting bolt is threadedly connected to the inside of the internal countersunk threaded hole, wherein one end of the internal countersunk threaded hole penetrates into the inner cavity of the adapter card slot and is rotatably connected to the bottom of the guide rail card seat.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, by using a tool to screw an adjustment bolt in a small circuit breaker, the guide rail holder is pushed to move up and down inside the adapter slot, thereby changing the size of the notch of the adapter slot to adapt to the size of different receiving guide rail seats, which effectively solves the problem that the size of the slot behind the circuit breaker body is larger than the installation size between the receiving guide rail seats, resulting in the circuit breaker body being unable to be installed according to the receiving guide rail seats of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the guide rail seat locking assembly of the utility model.

[0016] In the figure: 1. Circuit breaker body; 2. Guide rail base; 3. Adapter card slot; 4. Guide rail base locking assembly; 401. Guide rail base; 402. Adjusting bolt; 403. Positioning guide column; 5. Positioning hole; 6. Internally countersunk threaded hole. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] Example: See Figure 1-3 A small circuit breaker that is easy to install is shown, comprising a circuit breaker body 1 and a guide rail seat 2. A transfer card slot 3 is provided at the rear side of the circuit breaker body 1, and a guide rail seat locking assembly 4 is provided at the bottom of the inner cavity of the transfer card slot 3.

[0022] The guide rail seat locking assembly 4 includes a liftable guide rail seat 401, an adjusting bolt 402 is arranged at the bottom center of the guide rail seat 401, and a positioning guide column 403 is symmetrically arranged at the bottom of the guide rail seat 401 and based on the adjusting bolt 402 as the axis. The positioning guide column 403 is slidably connected to the inside of the positioning hole 5 at the bottom of the inner cavity of the adapter slot 3, so as to facilitate the positioning of the guide rail seat 401, and an internally countersunk threaded hole 6 is arranged on the circuit breaker body 1 and corresponds to the adjusting bolt 402.

[0023] As a further preferred solution of the utility model, an upper V-shaped groove is provided at the top of the inner cavity of the adapter slot 3 and corresponds to the upper side of the receiving guide rail seat 2, wherein the side of the receiving guide rail seat 2 is clamped in the interior of the upper V-shaped groove, which can effectively clamp the upper side of the receiving guide rail seat 2.

[0024] As a further preferred solution of the present invention, a lower V-shaped groove is provided on the end surface of the guide rail holder 401 and corresponds to the lower side of the guide rail holder 2, wherein the lower side of the guide rail holder 2 is clamped in the interior of the lower V-shaped groove, which can effectively clamp the lower side of the guide rail holder 2.

[0025] As a further preferred solution of the present invention, the left side wall of the guide rail holder 401 and the side wall of the inner cavity of the adapter card slot 3 are matched in a clearance fit, and the internally countersunk threaded hole 6 and the inner cavity of the adapter card slot 3 are connected.

[0026] As a further preferred solution of the utility model, the adjusting bolt 402 is threadedly connected to the inside of the internally countersunk threaded hole 6, wherein one end of the internally countersunk threaded hole 6 penetrates into the inner cavity of the adapter card slot 3 and is rotatably connected to the bottom of the guide rail holder 401.

[0027] Working principle: When in use, the receiving guide rail seat 2 is fixed on the cavity. At this time, the circuit breaker body 1 to be installed is clamped on the receiving guide rail seat 2 through the adapter slot 3, so that the adjusting bolt 402 is threadedly connected to the inside of the internal countersunk threaded hole 6, wherein one end of the internal countersunk threaded hole 6 passes through the inner cavity of the adapter slot 3 and is rotatably connected to the bottom of the guide rail seat 401. Under the condition, the tool is used to screw the adjusting bolt 402 to push the guide rail seat 401 up and down inside the adapter slot 3, thereby changing the size of the notch of the adapter slot 3 to adapt to the different sizes of the receiving guide rail seat 401.

[0028] 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. A small circuit breaker that is easy to install, comprising a circuit breaker body (1) and a guide rail seat (2), characterized in that: The rear side of the circuit breaker body (1) is provided with an adapter slot (3), and the bottom of the inner cavity of the adapter slot (3) is provided with a guide rail seat locking assembly (4); The guide rail seat locking assembly (4) comprises a guide rail seat (401) that can be raised or lowered, an adjusting bolt (402) being arranged at the bottom center of the guide rail seat (401), a positioning guide column (403) being symmetrically arranged at the bottom of the guide rail seat (401) and based on the adjusting bolt (402) as an axis, the positioning guide column (403) being slidably connected to the interior of a positioning hole (5) provided at the bottom of the inner cavity of the adapter card slot (3), and an internally countersunk threaded hole (6) being provided on the circuit breaker body (1) and corresponding to the adjusting bolt (402).

2. A small circuit breaker that is easy to install according to claim 1, characterized in that: An upper V-shaped notch is provided at the top of the inner cavity of the adapter card slot (3) and corresponds to the upper side of the receiving guide rail seat (2), wherein the side of the receiving guide rail seat (2) is clamped inside the upper V-shaped notch.

3. A small circuit breaker that is easy to install according to claim 1, characterized in that: A lower V-shaped notch is provided on the end surface of the guide rail clamping seat (401) and corresponds to the lower side of the guide rail mounting seat (2), wherein the lower side of the guide rail mounting seat (2) is clamped inside the lower V-shaped notch.

4. A small circuit breaker that is easy to install according to claim 1, characterized in that: The left side wall of the guide rail card seat (401) and the side wall of the inner cavity of the adapter card slot (3) are matched in a clearance fit, and the internally countersunk threaded hole (6) and the inner cavity of the adapter card slot (3) are in a communicating structure.

5. A small circuit breaker that is easy to install according to claim 4, characterized in that: The adjusting bolt (402) is threadedly connected to the interior of the internally countersunk threaded hole (6), wherein one end of the internally countersunk threaded hole (6) penetrates into the inner cavity of the adapter card slot (3) and is rotatably connected to the bottom of the guide rail card seat (401).

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