A mounting structure common to an auxiliary switch and an alarm switch

Abstract

The application relates to a universal installation structure of auxiliary switches and alarm switches, which comprises a base (4) and an upper cover (2), at least one alarm switch installation position is arranged on each side of the base (4), at least one auxiliary switch installation position is arranged in the middle, the base (4) and the upper cover (2) are connected as a whole, are installed on a middle sleeve (1) of a circuit breaker, at least two installation positions are arranged on the middle sleeve (1), and the universal installation structure formed by the base (4) and the upper cover (2) can be installed on any installation position on the middle sleeve (1). Compared with the prior art, the multiple alarm switches and auxiliary switches are integrated in a universal shell, the auxiliary alarm switches formed by the universal installation structure can be installed on the left side or the right side of the circuit breaker according to requirements, and the left side and the right side can be interchanged, the universality is high, the selection space of users is increased, the volume is small, the structure is simple, the sensitivity is high, and the auxiliary alarm switches are more reliable.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, and in particular to a universal mounting structure for auxiliary switches and alarm switches. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their application.

[0003] Low-voltage circuit breakers, also known as automatic air switches, have multiple protection functions (overload, short circuit, undervoltage protection, etc.), adjustable operating values, high breaking capacity, convenient operation, and safety, making them widely used. Structure and Working Principle: Low-voltage circuit breakers consist of an operating mechanism, contacts, protection devices (various trip units), and an arc-extinguishing system.

[0004] Existing molded case circuit breakers have complex internal accessory structures and limited internal space, resulting in limited installation space for accessories. Current technology can only install auxiliary or alarm switches, shunt trip units, or undervoltage trip units, and cannot assemble two types of accessories at the same time, which cannot meet the needs of users.

[0005] Patent No. 201020594532.X, entitled "A Synchronous Auxiliary Alarm Switch," discloses a synchronous auxiliary alarm switch. Its design involves installing first and second moving contact plates within a base. These plates control the connection and switching between the moving contact pieces of the contact mechanisms on both sides of the base and the first and second stationary contact pieces. The wires of the closing and opening indicator lights on the remote control terminal are connected to the contact mechanisms on both sides of the base. The first and second moving contact plates can correspondingly activate and deactivate the closing and opening indicator lights on the remote control terminal when controlling the closing and opening of the contact mechanisms. Furthermore, the contact mechanisms on one side of the base can be connected to the closing and opening indicator lights, while the contact mechanisms on the other side can be connected to an alarm. A switching mechanism ensures that the second moving contact plate only interacts with the first moving contact plate when the circuit breaker tripping mechanism trips. This not only provides auxiliary functions but also alarm functionality. Although this solution includes auxiliary switches and alarm switches, it uses a method where a moving contact plate pushes the moving contact piece to separate from the stationary contact piece. The moving contact plate is driven by the miniature circuit breaker operating handle. This accessory can only be installed on the outside of the miniature circuit breaker, and it is large in size, complex in structure, and has many parts. It may malfunction when the circuit breaker is being transported or when it is vibrated. Moreover, the number of auxiliary switches cannot be expanded.

[0006] Chinese patent CN205081079U discloses a molded case circuit breaker accessory with an auxiliary switch and an alarm switch. It includes a circuit breaker housing, a first microswitch controlling the alarm switch and a second microswitch controlling the auxiliary switch, both housed within the housing; a first push rod triggering the first microswitch; a second push rod triggering the second microswitch; and a circuit breaker shaft that pushes the first and second push rods. This circuit breaker accessory integrates both an alarm switch and an auxiliary switch, and the number of auxiliary switches can be expanded according to user needs, enhancing the accessory's functionality. Chinese patent CN212113598U discloses an integrated auxiliary and alarm electrical accessory for a circuit breaker, including a housing, an operating mechanism, a latch, and a trip latch. The operating mechanism includes a handle and a connecting rod, one end of which is hinged to the handle. It also includes an auxiliary switch module and an alarm switch module, which are respectively connected to the right and left terminal groups. This achieves simultaneous auxiliary and alarm functions on a single electrical accessory.

[0007] Although the above structure integrates the alarm switch and auxiliary switch, the installation positions of the alarm switch and auxiliary switch on the housing are fixed, requiring users to strictly install them in a fixed orientation, which is inconvenient. Although the number of accessories can be expanded, it will also lead to an increase in size. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a simple and easy-to-use installation structure for both auxiliary switches and alarm switches.

[0009] The objective of this invention can be achieved through the following technical solution: a universal mounting structure for both auxiliary and alarm switches, comprising a base and a top cover. The base has at least one alarm switch mounting position on each side and at least one auxiliary switch mounting position in the middle. The base and top cover are connected as a single unit and mounted on the intermediate sleeve of a circuit breaker. The intermediate sleeve has at least two mounting positions. This universal mounting structure of the base and top cover can be installed at any mounting position on the intermediate sleeve. Users can install the auxiliary alarm switch on the left or right side of the circuit breaker according to different needs, and the two can be interchanged, offering high versatility and increasing user choice.

[0010] The auxiliary switch includes an auxiliary push rod, a first micro switch, and a third micro switch. The auxiliary push rod is installed next to the first and third micro switches. The base has mounting positions for fixing the first and third micro switches. Depending on the user's needs, only one micro switch or both micro switches can be installed.

[0011] The auxiliary push rod has a first protrusion at its bottom, and a spring is provided between the first protrusion and the base. One end of the spring is fixed to the base, and the other end is sleeved on the first protrusion. The auxiliary push rod achieves linkage with the first micro switch and the third micro switch through the elastic force of the spring.

[0012] The auxiliary push rod is also provided with a second protrusion at the bottom, which is located behind the first protrusion. When installing the auxiliary push rod, the second protrusion guides the auxiliary push rod into the auxiliary switch mounting position on the base. After reaching the predetermined position, the second protrusion is inserted into the groove of the base to prevent the push rod from springing away due to spring force, which facilitates the installation of the push rod.

[0013] The base is provided with a limiting groove and a reinforcing rib to limit the movement of the auxiliary push rod, the first micro switch and the third micro switch.

[0014] The first and third microswitches are mounted together by overlapping two shafts.

[0015] The alarm switch includes an alarm push rod, a second micro switch, and an alarm spring. One end of the alarm spring is inserted into a corresponding groove on the base, and the other end is connected to the alarm push rod. The second micro switch is located next to the alarm push rod.

[0016] The alarm push rod is equipped with a rotating shaft, which is mounted on the base. Under the push of the spring force, the alarm push rod rotates around the rotating shaft, and at the same time triggers the micro switch to send out an alarm signal.

[0017] The base has two L-shaped steps to limit the left and right movement of the second micro switch, and two positioning protrusions to limit the front and back movement of the second micro switch.

[0018] The base has a positioning frame at the bottom for inserting into the middle sleeve. The positioning frame is surrounded by reinforcing ribs that restrict the base from swaying inside the middle sleeve. One side of the positioning frame is inclined, and the middle sleeve has a corresponding slope.

[0019] The base also has mounting positions for installation aids and alarm push rods.

[0020] The auxiliary switch and alarm switch universal mounting base has mounting positions for the alarm switch on both sides. Users can choose to install it on the left or right side of the middle sleeve according to different needs, and the two can be interchanged and used interchangeably.

[0021] The middle sleeve has symmetrical spaces on its left and right sides for installing universal mounting bases for the auxiliary switch and alarm switch. The spaces include mounting positions that match the base and spaces for installing auxiliary switch push rods.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. This invention redesigns the structure of auxiliary switches and alarm switches based on their operating principles. They are installed on the same base, with at least two symmetrical alarm switches on the left and right sides. The circuit breaker has at least two symmetrical mounting holes. Users can install the auxiliary alarm switches on the left or right side of the circuit breaker according to different needs, and the two can be interchanged, which is highly versatile and increases the user's choice.

[0024] 2. This invention integrates at least two alarm switches and auxiliary switches on the same base, which is small in size, simple in structure, highly sensitive, and more reliable. If a component is damaged, only the base needs to be replaced, instead of replacing the entire circuit breaker.

[0025] 3. This invention features a specially designed auxiliary switch structure. Two protrusions are provided at the bottom of the auxiliary push rod. One of the protrusions is connected to a spring, which facilitates the positioning and installation of the spring and allows it to maintain linkage with the auxiliary push rod. When a circuit fault occurs, the molded case circuit breaker mechanism trips, and the lever of the mechanism rotor pushes the auxiliary push rod. The auxiliary push rod overcomes the spring force and then triggers the first and third micro switches. The other protrusion guides the auxiliary switch to be installed on the base. After installation, the protrusion is inserted into the groove of the base to prevent the push rod from springing away due to the spring force, thus facilitating the installation of the push rod.

[0026] 4. The base of this invention has installation slots for each component, as well as limiting grooves and reinforcing ribs, to limit and guide the installation of each component and prevent them from shaking after installation. The base and the top cover are assembled together to form an integral installation structure. The middle sleeve has installation positions that match the installation structure, as well as guiding installation grooves and reinforcing ribs, to facilitate installation and prevent shaking after installation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the auxiliary and alarm switch of the present invention installed on the middle sleeve;

[0028] Figure 2 This is a schematic diagram of the internal structure of the auxiliary and alarm switch of the present invention;

[0029] Figure 3 The internal structure of the auxiliary and alarm switch of this invention is shown in the front view.

[0030] Figure 4 This is a cross-sectional view of the auxiliary and alarm switch push rod of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure for installing the alarm switch in this invention;

[0032] Figure 6This is a schematic diagram of the installation structure of the top cover and the base of the present invention;

[0033] Figure 7 This is a schematic diagram of the auxiliary alarm switch of the present invention installed on the middle sleeve;

[0034] The markings in the diagram are: 1. Middle sleeve; 2. Top cover; 21. Protrusion; 3. Spring; 4. Base; 41. L-shaped step; 42. Positioning round protrusion; 43. Groove; 44. Reinforcing rib; 45. Hook-shaped protrusion; 5. Alarm spring; 6. Auxiliary push rod; 61. First protrusion; 62. Second protrusion; 7. Third micro switch; 8. First micro switch; 9. Alarm push rod; 10. Second micro switch. Detailed Implementation

[0035] The following will describe in more detail the general mounting structure for the auxiliary switch and alarm switch of the present invention with reference to the schematic diagrams, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0036] Example

[0037] like Figure 1-4 As shown, a universal mounting structure for both auxiliary and alarm switches includes a base 4 and a top cover 2. The base 4 has at least one alarm switch mounting position on each side and at least one auxiliary switch mounting position in the middle. The base 4 and top cover 2 are connected as a single unit and mounted on the intermediate sleeve 1 of the circuit breaker. The intermediate sleeve 1 has at least two mounting positions. The universal mounting structure formed by the base 4 and top cover 2 can be installed on any mounting position on the intermediate sleeve 1. In this embodiment, the intermediate sleeve 1 has two symmetrical mounting positions on the left and right sides. Users can install the auxiliary alarm switch on the left or right side of the circuit breaker according to different needs, and the two positions can be interchanged, offering high versatility and increasing user choice.

[0038] The auxiliary switch and alarm switch are installed inside the housing formed by the top cover and base, and are mounted on the middle sleeve as auxiliary and alarm switches. Figure 1 As shown.

[0039] like Figure 2-4 As shown, the auxiliary switch includes an auxiliary push rod 6, a first micro switch 8, and a third micro switch 7. The auxiliary push rod 6 is installed next to the first micro switch 8 and the third micro switch 7. The base is provided with mounting positions for fixing the first micro switch 8 and the third micro switch 7. Depending on the user's different needs, only one micro switch or both micro switches can be installed.

[0040] The auxiliary push rod 6 has a first protrusion 61 at its bottom. A spring 3 is provided between the first protrusion 61 and the base 4. One end of the spring 3 is fixed to the base 4, and the other end is sleeved on the first protrusion 61. The auxiliary push rod 6 achieves linkage with the first micro switch 8 and the third micro switch 7 through the elastic force of the spring 3.

[0041] The auxiliary push rod 6 is also provided with a second protrusion 62 at its bottom. The second protrusion 62 is located behind the first protrusion 61. When installing the auxiliary push rod 6, the second protrusion 62 guides the auxiliary push rod 6 into the auxiliary switch mounting position on the base. After reaching the predetermined position, the second protrusion 62 is inserted into the groove of the base 4 to prevent the push rod from springing away due to spring force, which is conducive to the installation of the push rod.

[0042] The base 4 is provided with a limiting groove and reinforcing rib for limiting the auxiliary push rod 6, the first micro switch 8, the third micro switch 7, and the position.

[0043] like Figure 2 As shown, the first micro switch 8 and the third micro switch 7 are mounted together by overlapping two shafts.

[0044] like Figure 2-3 As shown, the alarm switch includes an alarm push rod 9, a second micro switch 10, and an alarm spring 5. One end of the alarm spring 5 is inserted into the corresponding groove 43 on the base 4, and the other end is connected to the alarm push rod 9. The second micro switch 10 is located next to the alarm push rod 9.

[0045] The alarm push rod 9 is equipped with a rotating shaft, which is mounted on the base 4. Under the force of the spring 5, the alarm push rod 9 rotates around the rotating shaft, and at the same time triggers the second micro switch 10 to send out an alarm signal.

[0046] like Figure 5 As shown, the base 4 has two L-shaped steps 41 to limit the left and right movement of the second micro switch 10. The base 4 also has two positioning protrusions 42 to limit the front and rear movement of the second micro switch 10. The side of the base 4 is also provided with reinforcing ribs 44 that match the middle sleeve to prevent the base 4 from shaking in the middle sleeve.

[0047] The upper cover 2 and the lower cover 4 can be connected as one piece by means of snaps, screws, etc., such as Figure 6 As shown, in this embodiment, the bottom of the upper cover 2 is provided with multiple insertion feet, the bottom of the feet is provided with protrusions 21, the base 4 is provided with corresponding insertion slots, the protrusions 21 are inserted into the corresponding insertion slots, and the base 4 is provided with hook-shaped protrusions 45. After the upper cover 2 is inserted into the base, the hook-shaped protrusions 45 can hook onto the corresponding holes on the upper cover 2, so that the two are connected and secured.

[0048] During installation, such as Figure 7As shown, the integrated structure consisting of the base 4 and the top cover 2 is inserted into the middle sleeve 1 and fixed according to the installation direction.

[0049] When a circuit fault occurs, the molded case circuit breaker mechanism trips. The lever of the mechanism rotor pushes the auxiliary push rod, which overcomes the spring force and triggers the first and third micro switches. The first micro switch transmits a signal to the second micro switch through a wire. When the state of the second micro switch changes, an alarm signal is issued.

[0050] It should be noted that the ordinal adjectives “first,” “second,” “third,” “fourth,” etc. used in this invention to describe common objects only indicate different instances of the same object. The terms “left,” “right,” etc., indicating location only indicate one possible situation in the embodiments, and are not intended to imply that the objects described in this way must be in a given order or location, whether temporally, spatially, sequentially, or in any other way.

[0051] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the present invention. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and content disclosed in the present invention without departing from the scope of the present invention shall be deemed to have remained within the protection scope of the present invention.

Claims

1. A universal mounting structure for both auxiliary switches and alarm switches, characterized in that, Includes a base (4) and a top cover (2). The base (4) has at least one alarm switch mounting position on each side and at least one auxiliary switch mounting position in the middle. The base (4) and the top cover (2) are connected as a whole and installed on the middle sleeve (1) of the circuit breaker. The middle sleeve (1) has at least two mounting positions. The universal mounting structure formed by the base (4) and the top cover (2) can be installed on any mounting position on the middle sleeve (1). The auxiliary switch includes an auxiliary push rod (6), a first micro switch (8) and a third micro switch (7). The auxiliary push rod (6) is installed next to the first micro switch (8) and the third micro switch (7). The base is provided with mounting positions for fixing the first micro switch (8) and the third micro switch (7). The auxiliary push rod (6) has a first protrusion (61) at the bottom. A spring (3) is provided between the first protrusion (61) and the base (4). One end of the spring (3) is fixed on the base (4), and the other end is sleeved on the first protrusion (61). The auxiliary push rod (6) achieves linkage with the first micro switch (8) and the third micro switch (7) through the elastic force of the spring (3). The bottom of the auxiliary push rod (6) is also provided with a second protrusion (62). The second protrusion (62) is located behind the first protrusion (61). When installing the auxiliary push rod (6), the second protrusion (62) guides the auxiliary push rod (6) into the auxiliary switch mounting position on the base. After reaching the predetermined position, the second protrusion (62) is inserted into the groove of the base (4). The base (4) is provided with a limiting groove and reinforcing ribs to limit the movement of the auxiliary push rod (6), the first micro switch (8) and the third micro switch (7); The first micro switch (8) and the third micro switch (7) are mounted together by overlapping two shafts.

2. The universal mounting structure for both auxiliary switches and alarm switches according to claim 1, characterized in that, The alarm switch includes an alarm push rod (9), a second micro switch (10) and an alarm spring (5). One end of the alarm spring (5) is inserted into the groove (43) at the corresponding position on the base (4), and the other end is connected to the alarm push rod (9). The second micro switch (10) is located next to the alarm push rod (9). The alarm push rod (9) is equipped with a rotating shaft, which is mounted on the base (4). Under the force of the alarm spring (5), the alarm push rod (9) rotates around the rotating shaft, and at the same time triggers the second micro switch (10) to send out an alarm signal.

3. The universal mounting structure for both auxiliary switches and alarm switches according to claim 2, characterized in that, The base (4) is provided with two L-shaped steps (41) to limit the left and right movement of the second micro switch (10). The base (4) is also provided with two positioning round protrusions (42) to limit the front and back movement of the second micro switch (10).

4. The universal mounting structure for both auxiliary switches and alarm switches according to claim 1, characterized in that, The base (4) is provided with a positioning frame at the bottom for inserting into the middle sleeve (1). The positioning frame is surrounded by reinforcing ribs that restrict the base (4) from swaying inside the middle sleeve (1). One side of the positioning frame is inclined, and the middle sleeve is provided with a corresponding slope.

5. The universal mounting structure for both auxiliary switches and alarm switches according to claim 1, characterized in that, The base (4) is also provided with mounting positions for installation aids and alarm push rods.

6. The universal mounting structure for both auxiliary switches and alarm switches according to claim 1, characterized in that, The auxiliary switch and alarm switch universal mounting base has mounting positions for the alarm switch on both sides. Users can choose to install it on the left or right side of the middle sleeve according to different needs, and the two can be interchanged and used interchangeably.

7. The universal mounting structure for both auxiliary switches and alarm switches according to claim 6, characterized in that, The middle sleeve (1) has symmetrical spaces on its left and right sides for installing universal mounting bases for the auxiliary switch and alarm switch, and the spaces include mounting positions that match the base and empty spaces for installing the auxiliary switch push rod.

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