Miniature DC circuit breaker

Abstract

The utility model discloses a miniature direct current circuit breaker, which relates to the technical field of circuit breakers and comprises a shell, and an accommodating cavity is arranged in the shell. A right-trapezoid-shaped mounting groove is formed in the rear wall of the shell, a pressing plate is slidably connected to the front end face of the shell, a transverse plate slidably connected into the containing cavity in the horizontal direction is arranged at the other end of the pressing plate, transverse rods are fixed to the two ends of the transverse plate, pressure springs are fixed to the other ends of the transverse rods, and gears are meshed with the bottoms of the transverse rods. A vertical rod is meshed with the side wall of the gear, the vertical rod and the cross rod are located in two parallel vertical planes, a clamping block is fixed to the end, away from the cross rod, of the bottom of the vertical rod, the bottom of the clamping block penetrates through the containing cavity and is located in the mounting groove, a circuit breaker mounting plate is horizontally arranged in the mounting groove, and the clamping block and the inner wall of the mounting groove clamp the circuit breaker mounting plate. According to the utility model, the problem that the circuit breaker is inconvenient to disassemble is solved, and disassembly and replacement of the circuit breaker are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and specifically relates to a small DC circuit breaker. Background Art

[0002] Miniature circuit breakers are commonly used electrical appliances that provide overload protection and short circuit protection in circuits. Circuit breakers have two working states: on and off.

[0003] A Chinese patent application numbered CN2013105146471 discloses a circuit breaker that can accurately detect the position state of a shift fork and thus detect the working state of the circuit breaker through an external circuit connected to an electrode. In particular, the main part of the sensor of the present invention is arranged inside the circuit breaker through an expansion hole of the circuit breaker itself, so it has the advantage of being small in size, and its structure is simple, and the failure rate is low. Compared with similar products, it has an obvious advantage of low cost.

[0004] However, the existing circuit breakers are fixed on the circuit breaker mounting plate, the circuit breaker mounting plate is provided with an isosceles trapezoidal protrusion, the rear end surface of the circuit breaker is provided with a mounting groove adapted thereto, the circuit breaker slides from one end of the circuit breaker mounting plate to a suitable mounting position of the circuit breaker mounting plate, and multiple circuit breakers are installed in sequence. When one of the circuit breakers is damaged and needs to be replaced, the circuit breaker next to it needs to be removed, which is cumbersome and inconvenient.

[0005] In view of this, this application is hereby filed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a small DC circuit breaker to achieve the desired purpose of quickly disassembling the circuit breaker.

[0007] In order to solve the above technical problems, the utility model provides a small DC circuit breaker, including a shell, wherein a cavity is provided inside the shell; a rear wall of the shell is provided with a right-angled trapezoidal mounting groove, a front end surface of the shell is slidably connected with a pressing plate, the other end of the pressing plate is provided with a horizontal plate slidably connected to the cavity in a horizontal direction, both ends of the horizontal plate are fixed with a cross bar, the other end of the cross bar is fixed with a compression spring, the bottom of the cross bar is meshed with a gear, the side wall of the gear is meshed with a vertical rod, the vertical rod and the cross bar are located in two parallel vertical planes, the bottom of the vertical rod is fixed with a clamping block at one end away from the cross bar, and the bottom of the clamping block passes through the cavity and is located in the mounting groove.

[0008] Furthermore, a horizontally arranged circuit breaker mounting plate is provided in the mounting groove, and the clamping block and the inner wall of the mounting groove clamp the circuit breaker mounting plate.

[0009] Furthermore, a convex tooth 1 is provided at the bottom of the cross bar, the convex tooth 1 is meshed with the gear, a sliding groove 1 is provided on the inner wall of the cavity, and the cross bar is slidably connected in the sliding groove 1.

[0010] Furthermore, the side wall of the vertical rod is provided with a second convex tooth, the second convex tooth is meshed with the gear, the inner wall of the cavity is provided with a second slide groove, and the vertical rod is slidably connected in the second slide groove.

[0011] Furthermore, the other end of the compression spring is fixed to the inner wall of the cavity, and the gear is installed on the inner wall of the cavity through a rotating rod.

[0012] Furthermore, the outer wall of the shell is respectively provided with a wiring port 1, a wiring port 2 and a paddle.

[0013] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0014] 1. In the utility model, by providing a pressing plate, a horizontal plate, a gear, a vertical rod and a clamping block, it is convenient to remove a single circuit breaker from the mounting plate without removing the adjacent circuit breakers, thereby facilitating the installation, maintenance and replacement of the circuit breaker.

[0015] 2. In the utility model, the pressing plate, the horizontal plate, the gear, the vertical rod and the clamping block are reset by setting the compression spring, and the clamping block and the mounting groove firmly clamp the circuit breaker mounting plate, which is convenient for the installation and fixation of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of a small DC circuit breaker;

[0018] Figure 2 A schematic diagram of the structure of the connection between the horizontal bar and the vertical bar in a small DC circuit breaker Figure 1 ;

[0019] Figure 3 A schematic diagram of the structure of the connection between the horizontal bar and the vertical bar in a small DC circuit breaker Figure 2 .

[0020] Numbers in the figure:

[0021] 10. Shell; 11. Mounting slot; 12. Wiring port 1; 13. Wiring port 2; 14. Pick;

[0022] 20. Pressing plate; 21. Horizontal plate; 22. Horizontal bar; 23. Compression spring; 24. Protruding tooth 1;

[0023] 30. Gear; 31. Vertical rod; 32. Clamp block; 33. Protruding tooth 2.

[0024] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model realizes synchronous movement of the horizontal plate 21, the gear 30, the vertical rod 31 and the clamping block 32 by pressing the pressing plate 20, which is convenient for removing a separate circuit breaker from the circuit breaker mounting plate, and is convenient for installing, repairing and replacing the circuit breaker.

[0029] like Figures 1 to 3 As shown, the utility model provides a small DC circuit breaker.

[0030] Specifically, by Figure 1-3The invention provides a housing 10, wherein the housing 10 has a cavity therein; a rear wall of the housing 10 is provided with a right-angled trapezoidal mounting groove 11; a pressing plate 20 is slidably connected to the front end surface of the housing 10; a horizontal plate 21 slidably connected to the cavity in a horizontal direction is provided at the other end of the pressing plate 20; a horizontal bar 22 is fixed at both ends of the horizontal plate 21; a compression spring 23 is fixed at the other end of the horizontal bar 22; a gear 30 is meshed at the bottom of the horizontal bar 22; a vertical bar 31 is meshed at the side wall of the gear 30; the vertical bar 31 and the horizontal bar 22 are located in two parallel vertical planes; a clamping block 32 is fixed at one end of the bottom of the vertical bar 31 away from the horizontal bar 22; the bottom of the clamping block 32 passes through the cavity and is located in the mounting groove 11; a horizontally arranged circuit breaker mounting plate is provided in the mounting groove 11; the clamping block 32 and the inner wall of the mounting groove 11 clamp the circuit breaker mounting plate; and a wiring port 12, a wiring port 2, and a paddle 14 are respectively provided on the outer wall of the housing 10.

[0031] In the present invention, the pressing plate 20 is pressed, the horizontal plate 21 moves horizontally, the gear 30 rotates, the vertical rod 31 and the clamping block 32 move upward, the clamping block 32 is separated from the circuit breaker mounting plate, and the circuit breaker can be removed.

[0032] Furthermore, as a specific implementation of the utility model, the utility model provides a small DC circuit breaker.

[0033] Specifically, Figure 1-3 As shown, a convex tooth 24 is provided at the bottom of the cross bar 22, and the convex tooth 24 meshes with the gear 30. A slide groove 1 is provided on the inner wall of the cavity. The cross bar 22 is slidably connected in the slide groove 1. A convex tooth 2 33 is provided on the side wall of the vertical rod 31, and the convex tooth 2 33 meshes with the gear 30. A slide groove 2 is provided on the inner wall of the cavity. The vertical rod 31 is slidably connected in the slide groove 2. The other end of the compression spring 23 is fixed on the inner wall of the cavity, and the gear 30 is installed on the inner wall of the cavity through a rotating rod.

[0034] In the utility model, the pressing plate 20 is released, and under the action of the compression spring 23, the clamping block 32 clamps the circuit breaker mounting plate, and the circuit breaker is firmly fixed.

[0035] Working principle: Press the pressing plate 20, the horizontal plate 21 moves horizontally toward the internal cavity of the shell 10, and the gear 30 rotates. Since the convex tooth 1 24 and the convex tooth 2 33 are both engaged with the gear 30, the vertical rod 31 and the clamping block 32 move up, and the clamping block 32 is separated from the circuit breaker mounting plate. There is no need to move the circuit breaker in other positions. The circuit breaker can be directly removed, and the pressing plate 20 is released. Under the action of the compression spring 23, the clamping block 32 clamps the circuit breaker mounting plate, and the circuit breaker is firmly fixed, and the installation and fixing are convenient.

[0036] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A small DC circuit breaker, comprising a housing (10), wherein a cavity is provided inside the housing (10); characterized in that: The rear wall of the shell (10) is provided with a right-angled trapezoidal mounting groove (11); the front end surface of the shell (10) is slidably connected with a pressing plate (20); the other end of the pressing plate (20) is provided with a horizontal plate (21) slidably connected to the cavity in the horizontal direction; both ends of the horizontal plate (21) are fixed with a cross bar (22); the other end of the cross bar (22) is fixed with a compression spring (23); the bottom of the cross bar (22) is meshed with a gear (30); the side wall of the gear (30) is meshed with a vertical rod (31); the vertical rod (31) and the cross bar (22) are located in two parallel vertical planes; the bottom of the vertical rod (31) is fixed with a clamping block (32) at one end away from the cross bar (22); the bottom of the clamping block (32) passes through the cavity and is located in the mounting groove (11).

2. A small DC circuit breaker according to claim 1, characterized in that: A circuit breaker mounting plate is horizontally arranged in the mounting groove (11), and the clamping block (32) and the inner wall of the mounting groove (11) clamp the circuit breaker mounting plate.

3. A small DC circuit breaker according to claim 1, characterized in that: The bottom of the cross bar (22) is provided with a protruding tooth (24), which meshes with the gear (30). The inner wall of the cavity is provided with a sliding groove, and the cross bar (22) is slidably connected in the sliding groove.

4. A small DC circuit breaker according to claim 1, characterized in that: The side wall of the vertical rod (31) is provided with a second protruding tooth (33), the second protruding tooth (33) is meshed with the gear (30), the inner wall of the cavity is provided with a second sliding groove, and the vertical rod (31) is slidably connected in the second sliding groove.

5. A small DC circuit breaker according to claim 1, characterized in that: The other end of the compression spring (23) is fixed on the inner wall of the cavity, and the gear (30) is installed on the inner wall of the cavity through a rotating rod.

6. A small DC circuit breaker according to claim 1, characterized in that: The outer wall of the housing (10) is respectively provided with a first wiring port (12), a second wiring port (13) and a paddle (14).

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