Safety switch

Abstract

The safety switch comprises a housing assembly, two fuse holders, a grounding block, a plugging assembly and two fuses. The two fuse seats are independently arranged, and each fuse seat is used for being electrically connected with two live wires in a home-entry power line; the grounding block is electrically connected with a ground wire in a home-entry power line; the plugging assembly comprises a plugging seat body and a plugging switch, the plugging seat body is electrically connected with the two fuse seats and the grounding block, the plugging seat body is used for being electrically connected with an output power line, and the plugging switch is detachably connected to the plugging seat body and used for controlling connection / disconnection between a home-entry power line and the output power line; the two fuses are in one-to-one correspondence with the two fuse seats, the fuse seats can be electrically connected with the plugging seat body through the corresponding fuses, and the fuses can perform overload protection on the plugging seat body and the corresponding fuse seats. In this way, the safety switch can be protected twice as a whole, and high safety protection is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrical switch devices, and in particular relates to a safety switch. Background Technology

[0002] In the United States, outdoor air conditioners are typically equipped with pull-out safety switches. These switches connect the incoming power line and the output power line, using the output line to power the outdoor unit. Users can control the power supply to the outdoor unit by plugging and unplugging the switch on the safety switch. Currently, existing safety switches are complex in structure and cannot provide overload protection for the circuit between the incoming and output power lines under normal power conditions. This results in poor overall safety performance and fails to meet user needs. Furthermore, for high-power air conditioning units, since the outdoor unit is usually installed on the outside of the building and the circuit board extends from inside, switching on the circuit breaker inside the building during maintenance could pose a risk of electric shock. Utility Model Content

[0003] In view of this, it is necessary to provide a safety switch to solve the above-mentioned technical problems.

[0004] A safety switch, the safety switch comprising:

[0005] A housing assembly, comprising a lower housing, a cover plate, and an upper cover, wherein the cover plate is detachably installed inside the lower housing, and the upper cover is rotatably installed on the lower housing for covering the lower housing;

[0006] Two fuse holders are provided independently and are respectively connected and fixed to the lower housing. Each fuse holder is used to electrically connect the two live wires in the incoming power line.

[0007] A grounding block, which is fixedly installed inside the lower shell, is used for electrical connection to the ground wire in the incoming power line;

[0008] A plug-in assembly, comprising a plug-in socket and a plug-in switch, wherein the plug-in socket is electrically connected to the two fuse holders and the grounding block respectively, and the plug-in socket is used to electrically connect the output power line, and the plug-in switch is detachably connected to the plug-in socket and is used to control the connection / disconnection between the incoming power line and the output power line;

[0009] Two fuses are provided, each corresponding to one of the two fuse holders. The fuse holders are electrically connected to the plug-in socket body via the corresponding fuses, and the fuses provide overload protection for the plug-in socket body and the corresponding fuse holders.

[0010] Understandably, the above-described structure allows users to control the power supply between the incoming and outgoing power lines by adjusting the connection between the switch and the socket. Furthermore, when the safety switch is normally powered on, a fuse provides overload protection for the circuit between the incoming and outgoing power lines. This provides the safety switch with secondary protection and a high level of safety, significantly increasing the safety of circuits using this safety switch to meet user needs.

[0011] In one embodiment, the fuse holder includes a first fuse clip, which can engage with a corresponding fuse and electrically connect the fuse holder to the corresponding fuse.

[0012] The first fuse clip is used to electrically connect to one of the live wires in the incoming power line.

[0013] It is understandable that the electrical connection between the fuse and the corresponding fuse holder is achieved by using the snap-fit ​​engagement between the first fuse clip and the fuse. This facilitates the installation and removal of the fuse and the corresponding fuse holder, making it convenient for users to operate.

[0014] In one embodiment, the fuse holder further includes a fuse connecting piece for electrical connection with the corresponding live wire, wherein the fuse connecting piece has multiple connecting holes;

[0015] The first fuse clip has a through hole that can communicate with one of the connecting holes, and the first fuse clip can be fixed to the fuse connecting piece by a connector that passes through the through hole and the connecting hole.

[0016] It is understandable that, through the above structural design, the first fuse clip can be fixed in the connection hole at different positions on the fuse connecting piece, thereby achieving the purpose of adjusting the fixed position of the first fuse clip on the fuse connecting piece. This allows the fuse holder to be adapted to first fuse clips of different sizes and to be suitable for assembly with fuses of different outer diameters.

[0017] In one embodiment, the fuse connector is configured as an axisymmetric structure.

[0018] Understandably, because the fuse connector is configured with an axisymmetric structure, the two fuse holders in this safety switch can be fitted with the same fuse connector, which helps to reduce costs.

[0019] In one embodiment, the first fuse clip is made of brass and is wrapped with a tin-plated layer.

[0020] Understandably, the above-mentioned structural design can reduce the temperature rise of the first fuse clip when energized.

[0021] In one embodiment, the plug-in body includes two second fuse clips, each corresponding to one of the two fuses, and the second fuse clips can engage with the corresponding fuses to electrically connect the plug-in body to the corresponding fuses.

[0022] It is understandable that, through the above structural design, the electrical connection between the fuse and the socket is achieved by using the snap-fit ​​between the second fuse clip and the fuse. This facilitates the installation and removal of the fuse from the socket and makes it easier for the user to operate.

[0023] In one embodiment, the plug-in switch includes an insulating handle and two knife-type conductive plates, the two knife-type conductive plates being independently arranged and respectively connected and fixed to the insulating handle;

[0024] When the plug-in switch is assembled onto the plug-in socket, the plug-in socket can be electrically connected to the output power line through the two blade conductive plates, and the incoming power line can be electrically connected to the output power line.

[0025] In one embodiment, a limiting protrusion is formed on the peripheral wall of the lower shell. The limiting protrusion is disposed on the side of the plug-in seat away from the upper bottom wall of the lower shell and abuts against the plug-in seat to limit the plug-in seat to the bottom wall.

[0026] Understandably, the above-mentioned structural design can limit one side of the plug-in socket when it is assembled on the bottom wall of the lower shell, thus saving a screw used to fix the plug-in socket to the bottom wall and reducing costs.

[0027] In one embodiment, an extended protrusion is formed on the lower shell, and a locking hole is provided on the extended protrusion, wherein the diameter of the locking hole is 8mm;

[0028] When the upper cover is closed onto the lower shell, the extended tab can pass through the upper cover and position the lock hole on the outside of the upper cover.

[0029] Understandably, the above structural design allows the locking mechanism of the upper cover in this safety switch to be compatible with existing combination locks and conventional locks, thus facilitating the user's locking operation of the upper cover.

[0030] In one embodiment, a hanging hole is provided on the bottom wall of the lower shell, through which the safety switch can be suspended and installed;

[0031] The bottom wall is also provided with a fixing hole, through which a fixing component can pass.

[0032] It is understandable that the above-mentioned structural design facilitates the assembly and fixing of the safety switch.

[0033] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0034] The safety switch claimed in this application allows users to control the power supply between the incoming and outgoing power lines by plugging and unplugging the switch and the socket. Furthermore, when the safety switch is normally energized, a fuse can provide overload protection for the power circuit between the incoming and outgoing power lines. This allows the safety switch to provide secondary protection and a high level of safety, thereby greatly increasing the safety of circuits using this safety switch and meeting user needs. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the safety switch provided in this application.

[0037] Figure 2 This is a structural schematic diagram of the safety switch provided in this application from another perspective.

[0038] Figure 3 This is a partial structural diagram of the safety switch provided in this application, wherein the top cover is in a hidden state.

[0039] Figure 4 An exploded view of the safety switch provided in this application.

[0040] Figure 5 This is a partial structural diagram of the assembly of the lower shell and the plug-in socket in this application.

[0041] Figure 6 This is a schematic diagram of the fuse holder in this application.

[0042] Figure 7This is an exploded view of the fuse holder in this application.

[0043] Reference numerals: 100, Safety switch; 10, Housing assembly; 11, Lower shell; 111, Peripheral wall; 1111, Limiting protrusion; 112, Bottom wall; 1121, Hanging hole; 1122, Fixing hole; 113, Extension protrusion; 1131, Locking hole; 12, Cover plate; 121, Protruding foot; 122, Cavity; 13, Top cover; 20, Fuse holder; 21, First fuse clip; 211, Through hole; 22, Fuse connecting piece; 221, Connecting hole; 30, Grounding block; 40, Plug-in assembly; 41, Plug-in base; 411, Second fuse clip; 42, Plug-in switch; 421, Insulated handle; 422, Knife switch conductive piece; 50, Fuse; 101, Screw; 102, Connector. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] The safety switch 100 claimed in this application is used to control the energization / de-energization between the incoming power line (not shown) and the output power line (not shown). Here, the output power line is used for electrical connection with an outdoor air conditioner, and the safety switch 100 is used as a power switch.

[0048] like Figures 1 to 4As shown, the safety switch 100 provided in this application includes a housing assembly 10, two fuse holders 20, a grounding block 30, a plug-in assembly 40, and two fuses 50. The housing assembly 10 includes a lower housing 11, a cover plate 12, and an upper cover 13. The cover plate 12 is detachably installed inside the lower housing 11, and the upper cover 13 is rotatably installed on the lower housing 11 to cover the lower housing 11. The two fuse holders 20 are independently arranged and respectively connected and fixed to the lower housing 11. Each fuse holder 20 is used to electrically connect the two live wires in the incoming power line. The grounding block 30 is fixedly installed inside the lower housing 11 for electrically connecting the incoming power line. The power cord has a ground wire; the plug-in assembly 40 includes a plug-in socket 41 and a plug-in switch 42. The plug-in socket 41 is electrically connected to two fuse holders 20 and a grounding block, and is used to electrically connect the output power cord. The plug-in switch 42 is detachably connected to the plug-in socket 41 and is used to control the connection / disconnection between the incoming power cord and the output power cord; two fuses 50 correspond one-to-one with two fuse holders 20. The fuse holders 20 can be electrically connected to the plug-in socket 41 through the corresponding fuses 50, and the fuses 50 can provide overload protection for the plug-in socket 41 and the corresponding fuse holders 20.

[0049] As can be seen from the above, the safety switch 100 can control the power supply between the incoming power line and the output power line by whether or not the plug-in switch 42 is connected to the plug-in socket 41. Furthermore, when the safety switch is normally powered on, the fuse 50 can provide overload protection for the power circuit between the incoming power line and the output power line. This allows the safety switch 100 to provide secondary protection and a high level of safety protection, thereby greatly increasing the safety of circuits using this safety switch and meeting the user's needs.

[0050] like Figure 5 As shown, a limiting protrusion 1111 is formed on the peripheral wall 111 of the lower shell 11. The limiting protrusion 1111 is located on the side of the plug-in seat 41 away from the upper bottom wall 112 of the lower shell 11 and abuts against the plug-in seat 41 to limit the plug-in seat 41 to the bottom wall 112. That is, when the plug-in seat 41 is assembled on the bottom wall 112 of the lower shell 11, one side can be pressed and limited by the limiting protrusion 1111, which can save one screw 101 used for fixing the plug-in seats 41, thus reducing costs. Here, the number of limiting protrusions 1111 is configured as two, and the two limiting protrusions 1111 are arranged at intervals. Specifically, the limiting protrusion 1111 can be formed by the concave shape of the peripheral wall 111 of the lower shell 11. It should be noted that the side of the plug-in seat 41 away from the limiting protrusion 1111 can be fixed to the bottom wall 112 of the lower shell 11 with a screw 101.

[0051] like Figure 1 , Figure 3As shown, an extending tab 113 is formed on the lower shell 11, and a locking hole 1131 is provided on the extending tab 113. The diameter of the locking hole 1131 is 8mm. When the upper cover 13 is closed onto the lower shell 11, the extending tab 113 can pass through the upper cover 13, and the locking hole 1131 is located on the outside of the upper cover 13. That is to say, when the safety switch 100 is in use, the upper cover 13 can be locked onto the lower shell 11 using an existing combination lock (not shown) and a conventional lock (not shown). This facilitates the user's locking operation of the upper cover 13 and prevents the safety switch 100 from being accidentally pulled out by other personnel.

[0052] like Figure 2 As shown, the bottom wall 112 of the lower casing 11 has a hanging hole 1121, through which the safety switch 100 can be suspended. The bottom wall 112 also has a fixing hole 1122, through which a fixing component (not shown) can pass. In other words, the safety switch 100 can first be suspended from the wall (not shown) using the hanging hole 1121, and then a fixing component can be threaded through the fixing hole 1122 and screwed to the wall to achieve on-site assembly of the safety switch 100. Here, three fixing holes 1122 are configured, arranged in a triangular pattern.

[0053] like Figure 1 , Figure 3 and Figure 4 As shown, two protrusions 121 are formed on one end of the cover plate 12. The two protrusions 121 can be assembled to the peripheral wall 111 of the lower shell 11 by a plug-in engagement. The end of the cover plate 12 away from the protrusions 121 abuts against the plug-in seat 41 and is then fixed to the plug-in seat 41 with screws, thus realizing the assembly connection of the cover plate 12 in the safety switch 100. Here, the cover plate 12 forms an inward cavity 122, and the plug-in switch 42 can be inserted into the cavity 122 and abut against the cover plate 12, thereby limiting the assembly of the plug-in switch 42 on the plug-in seat 41.

[0054] like Figure 6 , Figure 7 As shown, the fuse holder 20 includes a first fuse clip 21, which is used for electrical connection with one live wire in the incoming power line. The first fuse clip 21 can engage with the corresponding fuse 50, thus electrically connecting the fuse holder 20 to the corresponding fuse 50. In other words, the fuse holder 20 achieves electrical connection with the corresponding fuse 50 through the engagement of the first fuse clip 21 with the corresponding fuse 50. This facilitates the installation and removal of the fuse holder 20 and the corresponding fuse 50, making it convenient for users.

[0055] like Figure 7 As shown, the fuse holder 20 also includes a fuse connecting piece 22, which is used for electrical connection with the corresponding live wire. The fuse connecting piece 22 has multiple connecting holes 221. The first fuse clip 21 has a through hole 211 that communicates with one of the connecting holes 221. The first fuse clip 21 can be fixed to the fuse connecting piece 22 by a connector 102 passing through the through hole 211 and the connecting hole 221. In other words, the connector 102 can selectively pass through different connecting holes 221 to adjust the fixed position of the first fuse clip 21 on the fuse connecting piece 22, thereby enabling the fuse holder 20 to accommodate first fuse clips 21 of different sizes and to be suitable for assembly with fuses of different outer diameters. Here, the number of connecting holes 221 is configured to be three, arranged sequentially at intervals. It should be noted that the connector 102 can specifically be a screw, bolt, etc.

[0056] As a preferred option, such as Figure 7 As shown, the fuse connecting piece 22 is configured with an axisymmetric structure. This allows the two fuse holders 20 in the safety switch 100 to accommodate the same fuse connecting piece 22, thus reducing costs. Specifically, the fuse connecting piece 22 is configured with an axisymmetric structure, meaning it is arranged symmetrically vertically. It should be noted that the two fuse holders 20 in the safety switch 100 are arranged symmetrically within the lower housing 11.

[0057] In one embodiment, the first fuse clip 21 is made of brass and is coated with a tin-plated layer. This material characteristic of the first fuse clip 21 reduces its temperature rise when energized.

[0058] like Figure 4 , Figure 5 As shown, the plug-in socket 41 includes two second fuse clips 411, each corresponding to one of the two fuses 50. The second fuse clips 411 can engage with the corresponding fuse 50, thus electrically connecting the plug-in socket 41 to the corresponding fuse 50. This engagement between the second fuse clips 411 and the fuse 50 facilitates the electrical connection between the fuse 50 and the plug-in socket 41, making it easier for the user to install and remove the fuse 50.

[0059] like Figure 4As shown, the plug-in switch 42 includes an insulated handle 421 and two knife-type conductive plates 422. The two knife-type conductive plates 422 are independently arranged and are respectively connected and fixed to the insulated handle 421. When the plug-in switch 42 is assembled onto the plug-in base 41, the plug-in base 41 can be electrically connected to the output power line through the two knife-type conductive plates 422, and the incoming power line is electrically connected to the output power line. Here, an electrode plate (not shown) matching the knife-type conductive plate 422 is formed on the plug-in base 41. The electrode plate has a slot for inserting the knife-type conductive plate 422. When the plug-in switch 42 is assembled onto the plug-in base 41, the knife-type conductive plate 422 on the plug-in switch 42 contacts the electrode plate, realizing the conduction between the incoming power line and the output power line.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A safety switch, characterized in that, Safety switch (100) includes: The housing assembly (10) includes a lower shell (11), a cover plate (12) and an upper cover (13). The cover plate (12) is detachably installed inside the lower shell (11), and the upper cover (13) is rotatably installed on the lower shell (11) for covering the lower shell (11). Two fuse holders (20) are provided independently of each other and are respectively connected and fixed to the lower shell (11). Each fuse holder (20) is used to electrically connect the two live wires in the power supply line to the house. Grounding block (30), which is fixedly installed inside the lower shell (11) for electrical connection to the ground wire in the incoming power line; A plug-in assembly (40) includes a plug-in socket (41) and a plug-in switch (42). The plug-in socket (41) is electrically connected to the two fuse holders (20) and the grounding block (30) respectively. The plug-in socket (41) is used to electrically connect the output power line. The plug-in switch (42) is detachably connected to the plug-in socket (41) and is used to control the connection / disconnection between the incoming power line and the output power line. Two fuses (50) are provided, and the two fuses (50) correspond one-to-one with the two fuse holders (20). The fuse holders (20) can be electrically connected to the plug-in body (41) through the corresponding fuses (50). Furthermore, the fuses (50) can provide overload protection for the plug-in body (41) and the corresponding fuse holders (20).

2. The safety switch according to claim 1, characterized in that, The fuse holder (20) includes a first fuse clip (21), which can engage with the corresponding fuse (50) and make the fuse holder (20) electrically connected to the corresponding fuse (50); The first fuse clip (21) is used to electrically connect to one of the live wires in the incoming power line.

3. The safety switch according to claim 2, characterized in that, The fuse holder (20) further includes a fuse connecting piece (22), which is used to electrically connect with the corresponding live wire, wherein the fuse connecting piece (22) is provided with a plurality of connecting holes (221); The first fuse clip (21) has a through hole (211) that can communicate with one of the connecting holes (221). The first fuse clip (21) can be fixed to the fuse connecting piece (22) by a connector (102) that passes through the through hole (211) and the connecting hole (221).

4. The safety switch according to claim 3, characterized in that, The fuse connector (22) is configured with an axisymmetric structure.

5. The safety switch according to claim 2, characterized in that, The first fuse clip (21) is made of brass and is wrapped with a tin-plated layer.

6. The safety switch according to claim 1, characterized in that, The plug-in socket (41) includes two second fuse clips (411), which correspond one-to-one with the two fuses (50). The second fuse clips (411) can engage with the corresponding fuses (50) and make the plug-in socket (41) electrically connected to the corresponding fuses (50).

7. The safety switch according to claim 1, characterized in that, The plug-in switch (42) includes an insulating handle (421) and two knife-type conductive plates (422). The two knife-type conductive plates (422) are independently arranged and are respectively connected and fixed to the insulating handle (421). When the plug-in switch (42) is assembled onto the plug-in socket (41), the plug-in socket (41) can be electrically connected to the output power line through the two switch conductive pieces (422), and the incoming power line can be electrically connected to the output power line.

8. The safety switch according to claim 1, characterized in that, A limiting protrusion (1111) is formed on the peripheral wall (111) of the lower shell (11). The limiting protrusion (1111) is disposed on the side of the plug-in seat (41) away from the bottom wall (112) of the lower shell (11) and abuts against the plug-in seat (41) to limit the plug-in seat (41) to the bottom wall (112).

9. The safety switch according to claim 1, characterized in that, An extension tab (113) is formed on the lower shell (11), and a locking hole (1131) is provided on the extension tab (113), wherein the diameter of the locking hole (1131) is 8mm; When the upper cover (13) is closed onto the lower shell (11), the extended tab (113) can pass through the upper cover (13) and place the lock hole (1131) on the outside of the upper cover (13).

10. The safety switch according to claim 1, characterized in that, The bottom wall (112) of the lower shell (11) is provided with a hanging hole (1121), and the safety switch (100) can be suspended and installed through the hanging hole (1121); The bottom wall (112) is also provided with a fixing hole (1122), which allows the fixing component to pass through.

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