Baffle opening structure of drawer type circuit breaker

Abstract

The utility model discloses a drawer type circuit breaker baffle plate opening structure, which comprises a circuit breaker body, a movable baffle plate and a push rod piece, the circuit breaker body is arranged on a drawer seat in a sliding manner, the push rod piece is rotatably arranged on a mounting plate on one side or two sides of the drawer seat and is linked with the movable baffle plate, and mounting bulges are arranged on one side or two sides of the circuit breaker body. According to the technical scheme, the circuit breaker body is provided with the push rod piece, the push rod piece is provided with the installation protrusion, the drive piece used for driving the push rod piece to rotate is installed on the installation protrusion, when the circuit breaker body slides into the drawer base, the drive piece is driven to push the push rod piece to rotate, and then the push rod piece drives the movable baffle to be opened. Compared with the prior art, the circuit breaker has the advantages that side plates and related mounting screws of an original circuit breaker body are reduced, the mounting structure is simplified, maintenance is more convenient, more materials are saved, mounting is more convenient and faster, the overall structure is more compact, and miniaturization of the circuit breaker is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a baffle opening structure of a drawer-type circuit breaker. Background Art

[0002] The drawer-type circuit breaker, also known as the universal circuit breaker, is a mechanical switch that can connect, carry and disconnect currents under normal and abnormal circuit conditions. The existing drawer-type circuit breaker consists of two parts: the circuit breaker body and the drawer seat. The circuit breaker body can be shaken in and out of the drawer seat. When the circuit breaker is required to work normally, the circuit breaker body is shaken into the drawer seat so that the busbar of the body contacts the electrical connection terminals on the drawer seat to achieve electrical connection. When the circuit breaker needs to be repaired, tested or other work is required, the circuit breaker body needs to be shaken out of the drawer seat so that the busbar of the circuit breaker body is separated from the electrical connection terminals on the drawer seat to achieve the breakpoint. When the circuit breaker body is shaken out of the drawer seat, since the incoming line side may still be energized, in order to prevent the operator from touching the terminals in the drawer seat due to misoperation and causing electric shock accidents, a baffle is usually installed between the drawer seat and the circuit breaker body to achieve effective separation of the drawer seat and the circuit breaker body.

[0003] For example, Chinese patent document CN210779789U discloses a movable baffle device for a withdrawable circuit breaker, including a base frame, a movable baffle, a push rod, a reset member, a driving pin, a circuit breaker body side plate, and a withdrawable device side plate. The movable baffle is movably mounted on the base frame, the driving pin is mounted on the circuit breaker body side plate, the push rod is rotatably mounted on the withdrawable device side plate through a mounting shaft, the reset member biases the push rod in an initial position, the push rod is inserted into the movable baffle and can drive the movable baffle to move up and down. It can be seen from the above structure that two circuit breaker body side panels are installed on both sides of the circuit breaker body, and driving pins are riveted on the circuit breaker body side panels. As the circuit breaker body gradually moves into the drawer seat, the driving pin will push up the push rod, and the push rod rotates to drive the movable baffle to move upward, so that the socket is exposed and plugged into the busbar at the rear of the circuit breaker body. However, this movable baffle device has many structural parts, and the circuit breaker body side panels and many screws for fixing the circuit breaker body side panels must be installed. The installation is cumbersome, which increases the manufacturing cost. When repairing the circuit breaker body, the circuit breaker body side panels on both sides need to be removed, which is extremely inconvenient. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem that the movable baffle device in the prior art has too many structural parts and components, and must be installed with the circuit breaker body side plate and related mounting screws and other parts, which is cumbersome to install and increases the manufacturing cost, thereby providing a drawer-type circuit breaker baffle opening structure with a more compact overall structure, a simplified installation structure, which is conducive to the miniaturization of the circuit breaker and reduces the cost.

[0005] In order to solve the above technical problems, the utility model provides a drawer-type circuit breaker baffle opening structure, comprising:

[0006] The circuit breaker body is slidably arranged on the drawer seat;

[0007] The movable baffle is movably arranged on the drawer seat, and has a closed state in which it moves downward to block the terminal hole on the drawer seat, and an open state in which it moves upward to expose the terminal hole; characterized in that it also includes:

[0008] A push rod member is rotatably disposed on a mounting plate on one side or both sides of the drawer seat, and one end of the push rod member extends to connect the movable baffle;

[0009] The driving structure includes a mounting protrusion arranged on one side or both sides of the circuit breaker body, and a driving plate fixed to the mounting protrusion. The push rod is located on a path where the driving plate slides with the circuit breaker body. When the push rod rotates under the push of the driving plate, the movable baffle is driven to move and switch from a closed state to an open state.

[0010] As a preferred solution, the mounting protrusions are body bosses respectively formed on the side walls on both sides of the circuit breaker body.

[0011] As a preferred solution, the drive sheet is a metal sheet fixedly connected to one end of the main body boss. The metal sheet is arranged higher than the main body boss. When the circuit breaker body slides into the drawer seat, the metal sheet is driven to cooperate and contact the bottom edge of the push rod.

[0012] As a preferred solution, a positioning boss is provided at the bottom of one end of the main body boss, and a positioning socket is formed between the positioning boss and the side wall of the circuit breaker body; the drive plate includes a corresponding positioning plug inserted in the positioning socket, and a positioning step that cooperates and abuts against the positioning boss.

[0013] As a preferred solution, the drive plate and the main body boss are fixedly connected via a threaded connection structure, a clamping structure, or a riveted structure.

[0014] As a preferred solution, the threaded connection structure includes mounting holes penetrating through both ends of the main body boss, threaded holes arranged on the drive plate and corresponding to the mounting holes, and screw components passing through the mounting holes and fastened in the threaded holes.

[0015] As a preferred embodiment, the circuit breaker body includes a base and a pedestal, the body boss includes a first boss portion formed on the pedestal, and a second boss portion formed on the pedestal and connected to the first boss portion, and a mounting hole for the screw component to pass through is provided between the first boss portion and the second boss portion.

[0016] As a preferred solution, one end of the push rod is rotatably connected to the mounting plate via a rotating shaft, and the other end is inserted into a connecting hole formed on the movable baffle. A torsion spring is sleeved on the rotating shaft and abuts against the top edge of the push rod. The torsion spring exerts a force on the push rod to drive the movable baffle to move downward to cover the terminal hole.

[0017] As a preferred embodiment, a limited guide structure is arranged between the push rod member and the fixed plate, and the limited guide structure includes an arc-shaped guide groove arranged on the push rod member, and a guide rod fixedly connected to the fixed plate and passing through the arc-shaped guide groove, and the guide rod is provided with two baffles located on both sides of the arc-shaped guide groove.

[0018] As a preferred solution, the circuit breaker body can be moved in and out of the drawer seat through a slide rail assembly, and the slide rail assembly includes two groups of slide rails arranged on both sides of the drawer seat, and two groups of slide plates slidably connected with the two groups of slide rails. The circuit breaker body is mounted on the two groups of slide plates through two slide plate bosses to form a linkage fit.

[0019] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0020] 1. In the drawer-type circuit breaker baffle opening structure provided by the utility model, mounting protrusions are provided on both sides of the circuit breaker body, and drive plates for driving the push rod member to rotate are installed on the mounting protrusions. When the circuit breaker body slides into the drawer seat, the drive plates will be driven to push the push rod member to rotate, and then the push rod member will drive the movable baffle to move up to expose the terminal hole, thereby realizing the opening of the movable baffle, ensuring that the busbar on the circuit breaker body can be inserted into the terminal hole to achieve electrical connection with the conductive terminal. The baffle opening structure of the technical solution is adopted, and the original circuit breaker body side plate and related mounting screws are reduced by optimizing and modifying the circuit breaker body structure layout, simplifying the mounting structure, and making maintenance more convenient. Compared with the prior art, it saves more materials, is more convenient and quicker to install, and the overall structure is more compact, which is conducive to the miniaturization of the circuit breaker.

[0021] 2. In the drawer-type circuit breaker baffle opening structure provided by the utility model, the installation protrusions are body bosses respectively formed on the side walls on both sides of the circuit breaker body. The body bosses serve to provide installation support positions for the drive sheet. Since the body bosses are bakelite parts, they are easy to wear. The drive sheet is a metal sheet fixed at one end of the body boss. The metal sheet slightly protrudes above the body boss. This design makes use of the metal sheet to lift the push rod part as much as possible, so as to avoid direct contact between the body boss and the push rod part, which may cause damage to the body boss. The metal sheet and the push rod part are both metal parts, which is beneficial to reducing the friction resistance between the two and making the contact more reliable. In this way, the horizontal movement of the drive sheet is converted into the vertical movement of the movable baffle through the push rod part, thereby realizing the opening function of the movable baffle.

[0022] 3. In the drawer-type circuit breaker baffle opening structure provided by the utility model, the circuit breaker body has a base and a pedestal, and the body boss is composed of a first boss portion and a second boss portion respectively formed on the base and the pedestal, and the two boss portions are fixedly connected into a whole by screws. According to the threaded hole provided on the metal sheet for fastening with the screw component, the metal sheet acts as a nut, so that the screw component passes through the first boss portion and the second boss portion and is fastened to the metal sheet. Such an installation design not only plays an installation and fixing role for the metal sheet, but also can fix the two boss portions to form a body boss, which can increase the connection strength of the circuit breaker body.

[0023] 4. In the drawer-type circuit breaker baffle opening structure provided by the utility model, an arc-shaped guide groove is provided on the push rod member, and a guide rod rod penetrating the arc-shaped guide groove is correspondingly provided on the fixed plate. The advantage of such a design is that the push rod member can rotate around the rotating shaft at one end thereof under the drive of an external force, so that the other end thereof drives the movable baffle plate to move up and down, and the guide rod reciprocates in the arc-shaped guide groove to limit the rotation stroke of the push rod member, thereby limiting the moving distance of the movable baffle plate to be opened or closed. According to the two baffles located on both sides of the arc-shaped guide groove provided on the guide rod, the two baffles can prevent the push rod member from being offset to both sides thereof, and the installation stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1It is a structural schematic diagram of the baffle opening structure of the drawer-type circuit breaker of the utility model;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the circuit breaker body of the utility model;

[0027] Figure 3 It is a schematic diagram of the split structure of the circuit breaker body of the utility model;

[0028] Figure 4 It is a schematic diagram of the installation structure of the main body boss and the driving plate of the utility model;

[0029] Figure 5 This is a schematic diagram of the installation structure of the push rod member of the utility model;

[0030] Explanation of the accompanying drawings: 1. Circuit breaker body; 11. Slide plate holder; 2. Drawer seat; 21. Slide plate; 3. Movable baffle; 31. Terminal hole; 4. Push rod; 41. Arc guide groove; 5. Drive plate; 51. Positioning plug; 52. Threaded hole; 6. Body boss; 61. First boss portion; 62. Second boss portion; 63. Mounting hole; 64. Positioning boss; 7. Mounting plate; 8. Torsion spring; 9. Guide rod. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that, unless otherwise expressly specified, the terms "installed", "connected" and "connected" 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, and it can be the internal connection of two components.

[0033] Example

[0034] The present embodiment is described in detail below with reference to the accompanying drawings:

[0035] This embodiment provides Figure 1-5The drawer-type circuit breaker baffle opening structure shown in the figure comprises a circuit breaker body 1, a movable baffle 3, a push rod member 4 and a driving structure, wherein the circuit breaker body 1 is slidably arranged on the drawer seat 2; the movable baffle 3 is movably arranged on the drawer seat 2, and has a closed state in which it moves downward to block the terminal hole 31 on the drawer seat 2, and an open state in which it moves upward to expose the terminal hole 31, and the moving direction of the circuit breaker body is perpendicular to the moving direction of the movable baffle; the push rod member 4 is rotatably arranged on the mounting plate 7 on one side or both sides of the drawer seat 2, and one end of the push rod member 4 extends to connect the movable baffle 3; wherein the driving structure comprises a mounting protrusion arranged on one side or both sides of the circuit breaker body 1, and a driving sheet 5 fixed to the mounting protrusion, the push rod member 4 is located on the path in which the driving sheet 5 slides with the circuit breaker body 1, and when the push rod member 4 rotates under the push of the driving sheet 5, it drives the movable baffle 3 to move and switch from the closed state to the open state.

[0036] The above implementation mode is the core technical solution of this embodiment. By providing mounting protrusions on both sides of the circuit breaker body 1 and installing a driving piece 5 for driving the push rod member 4 to rotate on the mounting protrusions, when the circuit breaker body 1 slides into the drawer seat 2, the driving piece 5 will be driven to push the push rod member 4 to rotate, and then the push rod member 4 will drive the movable baffle 3 to move up to expose the terminal hole 31, thereby realizing the opening of the movable baffle 3, ensuring that the busbar on the circuit breaker body can be inserted into the terminal hole and electrically connected to the conductive terminal. The baffle opening structure of the technical solution is adopted, and the original circuit breaker body side plate and related mounting screws are reduced by optimizing and changing the circuit breaker body structure layout, simplifying the installation structure, and making maintenance more convenient. Compared with the prior art, it saves more materials, is more convenient and quicker to install, and the overall structure is more compact, which is conducive to the miniaturization of the circuit breaker.

[0037] Combine the following Figure 1-4 A detailed description of the specific arrangement of the mounting protrusion and the driving sheet is given;

[0038] The mounting protrusions are body bosses 6 respectively formed on the side walls of both sides of the circuit breaker body 1. The body bosses are used to provide mounting support positions for the drive sheet 5. Since the body bosses 6 are bakelite parts that are easy to wear, the drive sheet 5 is preferably a metal sheet fixedly connected to one end of the body boss 6. The metal sheet is higher than the body boss. When the circuit breaker body 1 slides into the drawer seat 2, the metal sheet is driven to cooperate with the bottom edge of the push rod 4, thereby driving the push rod 4 to rotate a certain angle. From the above structure, it can be seen that the metal sheet is slightly beyond the body boss. This design is to use the metal sheet to lift the push rod 4 as much as possible, so that the body boss 6 can be avoided from being directly contacted with the push rod 4 and causing damage to the body boss 6. At the same time, since both the metal sheet and the push rod 4 are metal parts, it is beneficial to reduce the friction resistance between the two, and the cooperation contact is more reliable. In this way, the horizontal movement of the drive sheet 5 is converted into the vertical movement of the movable baffle 3 through the push rod, thereby realizing the opening function of the movable baffle 3.

[0039] For further optimization, refer to Figure 2 and Figure 4 The bottom of one end of the body boss 6 is provided with a positioning boss 64, and a positioning socket is formed between the positioning boss 64 and the side wall of the circuit breaker body 1; the drive piece 5 includes a positioning plug 51 correspondingly provided and inserted into the positioning socket, and a positioning step that cooperates and abuts on the positioning boss 64. This structural setting plays a role in positioning and installing the drive piece 5 on the body boss 6 through the cooperation between the positioning step and the positioning boss 64, and the cooperation between the positioning plug 51 and the positioning socket, thereby ensuring the accuracy and stability of the installation position of the drive piece 5.

[0040] In this embodiment, the drive plate 5 and the main body boss 6 are preferably connected by a threaded connection structure, or the drive plate 5 and the main body boss 6 can also be connected by a clamping structure or a riveting structure. Figure 3-4As shown, the threaded connection structure includes mounting holes 63 penetrating through the two ends of the body boss 6, and threaded holes 52 arranged on the drive sheet 5 and corresponding to the mounting holes 63, and screw components passing through the mounting holes 63 and fastened to the threaded holes 52. After the screw components are fixed, the metal sheet is firmly fastened to the body boss 6, so that installation and disassembly are relatively convenient, and the installation occupies a small space. Among them, the circuit breaker body 1 includes a base and a base, and the body boss 6 includes a first boss portion 61 formed on the base, and a second boss portion 62 formed on the base and connected to the first boss portion 61. A mounting hole 63 for the screw component to pass through is provided between the first boss portion 61 and the second boss portion 62. In this structural arrangement, the two boss parts are fixedly connected into a whole by screws. The metal sheet is provided with a threaded hole 52 which cooperates with the screw component for fastening. Such a design enables the metal sheet to act like a nut, so that the screw component passes through the first boss part 61 and the second boss part 62 and is fastened to the metal sheet. Such an installation design not only plays an installation and fixing role for the metal sheet, but also can fix the two boss parts to form the main body boss 6, which can increase the connection strength of the circuit breaker body.

[0041] In the above embodiment, the mounting protrusion preferably adopts a body boss 6 formed on the side wall of the circuit breaker body, but there are obviously other different settings, for example, the mounting protrusion can choose a connecting piece fixedly set on the side wall of the circuit breaker body 1, so that the metal sheet and the connecting piece can be vertically connected to form an L-shaped structure or an inverted T-shaped structure. Those skilled in the art can make a choice of the specific setting method of the mounting protrusion according to the above description, and other equivalent embodiments will not be described one by one here.

[0042] Combination Figure 1 and Figure 5As shown, the circuit breaker body 1 can be moved in and out of the drawer seat 2 through a slide rail assembly. The slide rail assembly includes two groups of slide rails 22 arranged on both sides of the drawer seat 2, and two groups of slide plates 21 slidingly connected with the two groups of slide rails 22. The circuit breaker body 1 is mounted on the two groups of slide plates 21 through two slide plate 21 bosses to form a linkage fit. After installation, the circuit breaker body 1 slides with the two groups of slide plates 21. When the slide plate slides into the drawer seat, the metal sheet will push up the push rod to rotate the push rod. After the push plate rotates, it pushes the movable baffle 3 to move and open. Among them, one end of the push rod member 4 is rotatably connected to the mounting plate through a rotating shaft, and the other end thereof is inserted into the connecting hole formed on the movable baffle 3. A torsion spring 8 is sleeved on the rotating shaft and abuts against the top edge of the push rod member 4. The torsion spring 8 exerts a force on the push rod member 4 to drive the movable baffle 3 to move downward to cover the terminal hole 31. When the circuit breaker body 1 slides out of the drawer seat 2, it will drive the drive sheet 5 to separate from the push rod member 4. At this time, the push rod member 4 will drive the movable baffle 3 to move downward to cover the terminal hole 31 under the drive of the torsion spring 8, thereby realizing the automatic closing function of the movable baffle.

[0043] It is further preferred that a limited position guiding structure is provided between the push rod member 4 and the fixed plate, such as Figure 5 As shown, the limiting guide structure includes an arc-shaped guide groove 41 arranged on the push rod member 4, and a guide rod 9 fixedly connected to the fixed plate and passed through the arc-shaped guide groove 41. The advantage of such a design is that the push rod member 4 can rotate around the rotating shaft at one end thereof under the drive of an external force, so that the other end thereof drives the movable baffle 3 to move up and down. The guide rod 9 makes a reciprocating motion in the arc-shaped guide groove 41, which limits the rotation stroke of the push rod member 4, thereby limiting the moving distance of the movable baffle 3 for opening or closing. According to the two baffles located on both sides of the arc-shaped guide groove 41 provided on the guide rod 9, the two baffles can prevent the push rod member from shifting to its two sides, and the installation stability is good.

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A drawer-type circuit breaker baffle opening structure, comprising: A circuit breaker body (1) is slidably disposed on a drawer seat (2); The movable baffle (3) is movably arranged on the drawer seat (2), and has a closed state in which it moves downward to block the terminal hole (31) on the drawer seat (2), and an open state in which it moves upward to expose the terminal hole (31); it is characterized by further comprising: A push rod (4) is rotatably mounted on a mounting plate (7) on one side or both sides of the drawer seat (2), and one end of the push rod (4) extends to connect to the movable baffle (3); The driving structure comprises a mounting protrusion arranged on one side or both sides of the circuit breaker body (1), and a driving plate (5) fixed to the mounting protrusion, the push rod member (4) being located on a path along which the driving plate (5) slides with the circuit breaker body (1), and the push rod member (4) drives the movable baffle (3) to move and switch from a closed state to an open state when it rotates under the push of the driving plate (5).

2. The drawer-type circuit breaker baffle opening structure according to claim 1 is characterized in that: The mounting protrusions are body bosses (6) respectively formed on the side walls on both sides of the circuit breaker body (1).

3. The drawer-type circuit breaker baffle opening structure according to claim 2 is characterized in that: The driving sheet (5) is a metal sheet fixedly connected to one end of the main body boss (6). The metal sheet is arranged higher than the main body boss. When the circuit breaker body (1) slides into the drawer seat (2), the metal sheet is driven to cooperate with and contact the bottom edge of the push rod (4).

4. The drawer-type circuit breaker baffle opening structure according to claim 3 is characterized in that: A positioning boss (64) is provided at the bottom of one end of the body boss (6), and a positioning socket is formed between the positioning boss (64) and the side wall of the circuit breaker body (1); the drive plate (5) comprises a corresponding positioning plug (51) inserted into the positioning socket, and a positioning step that cooperates and abuts against the positioning boss (64).

5. The drawer-type circuit breaker baffle opening structure according to any one of claims 2 to 4, characterized in that: The driving plate (5) and the main body boss (6) are fixedly connected via a threaded connection structure, a clamping structure or a riveted structure.

6. The drawer-type circuit breaker baffle opening structure according to claim 5, characterized in that: The threaded connection structure comprises mounting holes (63) penetrating through the two ends of the main body boss (6), threaded holes (52) arranged on the drive plate (5) and corresponding to the mounting holes, and screw components passing through the mounting holes (63) and fastened to the threaded holes (52).

7. The drawer-type circuit breaker baffle opening structure according to claim 6, characterized in that: The circuit breaker body (1) comprises a base and a pedestal, the body boss (6) comprises a first boss portion (61) formed on the base, and a second boss portion (62) formed on the pedestal and connected to the first boss portion (61), and a mounting hole (63) for the screw component to pass through is provided between the first boss portion (61) and the second boss portion (62).

8. The drawer-type circuit breaker baffle opening structure according to claim 7, characterized in that: One end of the push rod (4) is rotatably connected to the mounting plate via a rotating shaft, and the other end is inserted into a connecting hole formed on the movable baffle (3). A torsion spring (8) is sleeved on the rotating shaft and abuts against the top edge of the push rod (4). The torsion spring (8) exerts a force on the push rod (4) to drive the movable baffle (3) to move downward to cover the terminal hole (31).

9. The drawer-type circuit breaker baffle opening structure according to claim 8, characterized in that: A limit guide structure is provided between the push rod member (4) and the fixed plate, the limit guide structure comprising an arc-shaped guide groove (41) provided on the push rod member (4), and a guide rod (9) fixedly connected to the fixed plate and passing through the arc-shaped guide groove (41), the guide rod (9) being provided with two blocking sheets respectively arranged on both sides of the arc-shaped guide groove (41).

10. The drawer-type circuit breaker baffle opening structure according to any one of claims 6 to 9, characterized in that: The circuit breaker body (1) can be moved in and out of the drawer seat (2) via a slide rail assembly, the slide rail assembly comprising two groups of slide rails (22) arranged on both sides of the drawer seat (2), and two groups of slide plates (21) slidably connected to the two groups of slide rails (22), and the circuit breaker body (1) is mounted on the two groups of slide plates (21) via two slide plate (21) bosses to form a linkage fit.

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