An anti-inverted insertion structure for protecting electrical appliances

Abstract

The present invention relates to the field of electrical appliance technology, and specifically to an anti-inverted insertion structure for protecting electrical appliances, the anti-inverted insertion structure comprising: a switch body comprising a first plug-in portion and a second plug-in portion, the first plug-in portion and the second plug-in portion being symmetrically distributed about an imaginary center line of the switch body; a conductive structure comprising a first conductive member corresponding to the first plug-in portion, and a second conductive member corresponding to the second plug-in portion; the switch body further comprising an insertion portion, the conductive structure comprising a protrusion, the protrusion and the insertion portion matching when the switch body is assembled along a preset direction, and misaligned when assembled along a non-preset direction; the preset direction being the direction when the first plug-in portion corresponds to the first conductive member. The present invention provides an anti-inverted insertion structure for protecting electrical appliances that is not easily connected in reverse when a circuit breaker is connected to a cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and in particular to an anti-inverted insertion structure for protecting electrical appliances. Background Art

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. Existing plug-in circuit breaker inlet terminals typically utilize a plug-in wiring structure to connect to the cabinet. A plug-in circuit breaker inlet terminal typically has two terminals: an L terminal (live terminal, hereinafter referred to as the L terminal) and an N terminal (neutral terminal, hereinafter referred to as the N terminal). The L terminal of the circuit breaker is typically connected to the L terminal inside the cabinet, while the N terminal is connected to the N terminal inside the cabinet, completing the connection between the plug-in circuit breaker and the cabinet.

[0003] However, the L and N terminals of existing circuit breakers have a symmetrical structure. Therefore, when using the circuit breaker, the user may connect the circuit breaker in reverse, that is, the N terminal of the circuit breaker is connected to the L terminal of the cabinet, and the L terminal of the circuit breaker is connected to the N terminal of the cabinet. Since the N-pole circuit inside the circuit breaker is always conductive, the N terminal on the load side of the circuit breaker will be directly energized, which will cause a safety hazard. This will make the circuit breaker unable to provide protection and will also damage the circuit breaker itself. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the circuit breaker is connected to the cabinet in reverse connection, thereby providing an anti-reverse insertion structure for protective electrical appliances that is not easily connected in reverse when the circuit breaker is connected to the cabinet.

[0005] In order to solve the above technical problems, the present invention provides an anti-inverted insertion structure for protecting an electrical appliance, comprising: a switch body, comprising a first plug-in portion and a second plug-in portion, wherein the first plug-in portion and the second plug-in portion are symmetrically distributed about an imaginary center line of the switch body;

[0006] The conductive structure includes a first conductive member corresponding to the first plug-in portion and a second conductive member corresponding to the second plug-in portion;

[0007] The switch body is also provided with an insertion portion, and the conductive structure is provided with a protrusion. The protrusion and the insertion portion match when the switch body is assembled along a preset direction, and are misaligned when assembled along a non-preset direction; the preset direction is the direction when the first plug-in portion corresponds to the first conductive member.

[0008] Optionally, the insertion portion is arranged close to the first plug-in portion or the second plug-in portion.

[0009] Optionally, the insertion portion is a groove-shaped structure that is not symmetrically distributed about the imaginary center line, and the protrusion is a projection that is adapted to the groove-shaped structure.

[0010] Optionally, the protrusion is a signal terminal.

[0011] Optionally, the conductive structure is inserted into the first plug-in portion or the second plug-in portion and the insertion portion at the same time.

[0012] Optionally, a conductive clip is provided in the first plug-in portion or the second plug-in portion, and in the insertion portion.

[0013] Optionally, the length of the protrusion is greater than the length of the first conductive member and the second conductive member.

[0014] Optionally, the length of the protrusion is equal to or less than the length of the first conductive member, and the distance between the end of the conductive clip close to the end of the switch body and the end of the switch body is assumed to be a first distance, and the length difference between the protrusion and the first conductive member is a second distance, and the first distance is greater than the second distance.

[0015] Optionally, the first conductive member, the second conductive member and the protrusion are all plate-shaped structures.

[0016] Optionally, the first plug-in portion or the second plug-in portion, and the insertion portion are all grooves, and a guide surface is provided at the opening of the groove.

[0017] The technical solution of the present invention has the following advantages:

[0018] 1. The anti-inverted insertion structure for protecting electrical appliances provided by the present invention includes: a switch body, provided with two symmetrically arranged plug-in parts; a conductive structure, having conductive parts corresponding to the two plug-in parts; the switch body is also provided with an insertion part, the insertion part corresponds to the position of the protrusion on the conductive structure, and the protrusion is inserted into the insertion part along a preset direction.

[0019] An insertion portion is provided on the switch body, and a protrusion is provided on the conductive structure, and the position of the protrusion corresponds to that of the insertion portion. When the circuit breaker is assembled with the cabinet, due to the arrangement of the protrusion and the insertion portion, the protrusion cannot be inserted into the insertion portion, but is blocked to the outside of the switch body and abuts against the end of the switch body. The protrusion can only be inserted into the insertion portion along a preset direction. When assembled along a non-preset direction, if the two are misaligned, they cannot be inserted into the insertion portion along the opposite direction, thereby ensuring that the first conductive member is accurately inserted into the first plug-in portion and the second conductive member is accurately inserted into the second plug-in portion, preventing the first conductive member from being reversely inserted into the first plug-in portion and the second conductive member from being reversely inserted into the second insertion portion, thereby preventing reverse connection between the circuit breaker and the cabinet, thereby preventing electric shock and other safety hazards when the user installs the circuit breaker on the cabinet, improving the safety index, and at the same time will not damage the structure of the circuit breaker itself, protecting the service life of the circuit breaker.

[0020] 2. The anti-reverse insertion structure for protecting electrical appliances provided by the present invention has the insertion portion arranged close to the first plug-in portion or the second plug-in portion, thereby avoiding the situation where the insertion portion is arranged on the imaginary center line of the switch body and fails to prevent reverse insertion.

[0021] 3. The anti-inverted insertion structure for protecting an electrical appliance provided by the present invention is such that the conductive structure is inserted into the first plug-in portion or the second plug-in portion and the insertion portion at the same time, thereby ensuring the consistency of insertion of the conductive structure.

[0022] 4. The anti-reverse insertion structure for protecting electrical appliances provided by the present invention has a length of the protrusion greater than the lengths of the first conductive member and the second conductive member. Before the first conductive member is inserted into the first plug-in portion and before the second conductive member is inserted into the second plug-in portion, the protrusion can be in advance abutted against the end of the switch body, thereby preventing the first conductive member and the second conductive member from being reversely connected.

[0023] 5. The anti-inverted insertion structure for protecting electrical appliances provided by the present invention, the first plug-in part or the second plug-in part, and the insertion part are all grooves, and a guide surface is provided at the opening of the groove. The setting of the guide surface facilitates the insertion of the first conductive part, the second conductive part and the protrusion, and provides guidance for the insertion of the first conductive part, the second conductive part and the protrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A three-dimensional diagram of the anti-inverted insertion structure for protecting an electrical appliance provided by the present invention;

[0026] Figure 2 This is a schematic diagram of the structure in which the conductive structure is not inserted into the switch body;

[0027] Figure 3 A schematic diagram of the structure for inserting the conductive structure into the switch body;

[0028] Figure 4 for Figure 1 rear view.

[0029] Description of reference numerals:

[0030] 1-switch body; 11-switch body end; 12-first plug-in portion; 13-second plug-in portion; 14-insertion portion; 15-connection terminal; 2-conductive clip; 3-guide surface; 4-conductive structure; 41-first conductive member; 42-second conductive member; 43-protrusion. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] like Figures 1 to 4 As shown, an embodiment of the present invention provides an anti-inverted insertion structure for protecting electrical appliances, including: a switch body 1, including a first plug-in portion 12 and a second plug-in portion 13, the first plug-in portion 12 and the second plug-in portion 13 are symmetrically distributed with respect to the imaginary center line of the switch body 1; a conductive structure 4, including a first conductive member 41 corresponding to the first plug-in portion 12, and a second conductive member 42 corresponding to the second plug-in portion 13; the switch body 1 is further provided with an insertion portion 14, and the conductive structure 4 is provided with a protrusion 43, the protrusion 43 and the insertion portion 14 match when the switch body 1 is assembled along a preset direction, and are misaligned when assembled along a non-preset direction; the preset direction is the direction when the first plug-in portion 12 corresponds to the first conductive member 41.

[0036] The switch body 1 is set on the circuit breaker, and the conductive structure 4 is the output terminal on the cabinet. When the circuit breaker and the cabinet are assembled, the circuit breaker is installed on the cabinet, wherein the switch body 1 corresponds to the conductive structure 4, thereby realizing the electrical connection between the circuit breaker and the cabinet. The first conductive part 41 is an L-pole conductive part, and the second conductive part 42 is an N-pole conductive part; the first plug-in part 12 is an L-pole plug-in part, and the second plug-in part 13 is an N-pole plug-in part, and the first plug-in part 12 and the second plug-in part 13 are symmetrically arranged; therefore, an insertion part 14 is set on the switch body 1, and a protrusion 43 is set on the conductive structure 4, and the position of the protrusion 43 corresponds to that of the insertion part 14. When the circuit breaker is connected to the cabinet, due to the arrangement of the protrusion 43 and the insertion part 14, the protrusion 43 cannot be inserted into the insertion part 14, and is blocked to the outside of the switch body 1 and is separated from the switch body. The body end 11 abuts, and the protrusion 43 can only be inserted into the insertion portion 14 along a preset direction, and cannot be inserted into the insertion portion 14 along the opposite direction, ensuring that the first conductive member 41 is accurately inserted into the first plug-in portion 12, and the second conductive member 42 is accurately inserted into the second plug-in portion 13, preventing the two conductive members from being reversely inserted into the plug-in portion, thereby preventing the circuit breaker and the cabinet from being reversely connected, thereby preventing the user from electric shock and other safety hazards when installing the circuit breaker on the cabinet, improving the safety index, and at the same time will not damage the structure of the circuit breaker itself, protecting the service life of the circuit breaker.

[0037] The imaginary center line is the center line that makes the first plug-in portion 12 and the second plug-in portion 14 symmetrically arranged on the switch body 1. It is called the imaginary center line because it is invisible to the human eye.

[0038] In this embodiment, if Figures 1 to 3As shown, the insertion portion 14 is arranged close to the first plug-in portion 12 or the second plug-in portion 13. In this embodiment, the insertion portion 14 is arranged close to the first plug-in portion 12, thereby avoiding the insertion portion 14 being arranged on the imaginary center line of the switch body 1, which fails to prevent reverse insertion.

[0039] As an alternative embodiment, the inserting portion 14 may also be arranged close to the second plug-in portion 13 , which may be specifically set according to actual conditions.

[0040] As an alternative embodiment, the protrusion 43 is a groove-shaped structure that is not symmetrically distributed about the imaginary center line. This actually covers two possibilities: one is that the groove-shaped structure can be regular, but the symmetry line of the groove-shaped structure is not the same line as the imaginary center line of the switch body 1, such as a "strip-shaped structure that exceeds the imaginary center line of the switch body 1 by 1 mm and exceeds the imaginary center line of the switch body 1 by 2 mm. If the circuit breaker is installed upside down, it can actually prevent reverse insertion."

[0041] The other insertion portion 14 is a special-shaped groove, that is, an asymmetric structure, and the protrusion 43 is a special-shaped protrusion adapted to the special-shaped groove, so that the protrusion 43 can only be inserted into the insertion portion 14 along a preset direction and cannot be inserted into the insertion portion 14 along the opposite direction, thereby preventing the first conductive member 41 from being reversely inserted into the first plug-in portion 12 and the second conductive member 42 from being reversely inserted into the second plug-in portion 13, thereby preventing the circuit breaker and the cabinet from being reversely connected.

[0042] like Figure 4 As shown, a connection terminal 15 is provided on one end of the switch body 1 away from the insertion portion 14 , and the connection terminal 15 is connected to the structure inside the circuit breaker.

[0043] In this embodiment, the protrusion 43 is a signal terminal, which can establish a connection between the cabinet and the switch body 1 and transmit signals while preventing reverse insertion.

[0044] like Figure 3 As shown, during the insertion process, the conductive structure 4 is simultaneously inserted into the first plug-in portion 12 or the second plug-in portion 13 and the insertion portion 14 , thereby ensuring consistency in the insertion of the conductive structure 4 .

[0045] In this embodiment, a conductive clip 2 is provided in the first plug-in portion 12 or the second plug-in portion 13, and the insertion portion 14. The provision of the conductive clip 2 serves to fix the first conductive member 41, the second conductive member 42, and the protrusion 43, thereby preventing the first conductive member 41 from moving in the first plug-in portion 12, the second conductive member 42 from moving in the second plug-in portion 13, and the protrusion 43 from moving in the insertion portion 14, thereby ensuring the stability of the connection.

[0046] Furthermore, during the insertion process, the conductive structure 4 may not be inserted into the first plug-in portion 12 or the second plug-in portion 13 and the insertion portion 14 at the same time. Normally, when the conductive structure 4 is in the first plug-in portion 12 or the second plug-in portion 13 and the insertion portion 14 at the same time, the first plug-in portion 12 and the second plug-in portion 13 and the insertion portion 14 on the switch body 1 are not in the same plane, and specifically can be arranged in a stepped form; when the first plug-in portion 12, the second plug-in portion 13 and the insertion portion 14 are inserted, although the instantaneous plugging and unplugging force of the conductive structure 4 is reduced, there is also a situation where the first conductive member 41 and the second conductive member 42 are connected to the first plug-in portion 12 and the second plug-in portion 13 first. Therefore, it is necessary to make the length of the protrusion 43 greater than the length of the conductive member, so that before the first conductive member 41 is inserted into the first plug-in portion 12 and before the second conductive member 42 is inserted into the second plug-in portion 13, the protrusion 43 can be in advance abutted against the end portion 11 of the switch body, thereby preventing the first conductive member 41 from being inserted into the first plug-in portion 12 and the second conductive member 42 from being inserted into the second plug-in portion 13, thereby preventing the first conductive member 41 and the second conductive member 42 from being reversely connected.

[0047] As an alternative embodiment, the length of the protrusion 43 is equal to or less than the length of the conductive member. When the length of the protrusion 43 is equal to or less than the length of the first conductive member 41, the following conditions must be met: assuming that the distance between the end of the conductive clip 2 closest to the switch body end 11 and the switch body end 11 is a first distance, the difference in length between the protrusion 43 and the first conductive member 41 is a second distance, and the first distance is greater than the second distance. When the length of the protrusion 43 is equal to the length of the first conductive member 41, the first conductive member 41, the second conductive member 42 and the protrusion 43 are inserted at the same time, and the protrusion 43 abuts against the switch body 1, so that the first conductive member 41 and the second conductive member 42 are blocked at the end 11 of the switch body and are not connected to the conductive clip 2; when the length of the protrusion 43 is less than the length of the first conductive member 41, it is necessary to continue to push the switch body 1 so that the conductive structure 4 is partially inserted into the switch body 1. At this time, since the first distance is greater than the second distance, the first conductive member 41 and the second conductive member 42 also do not abut against the conductive clip 2. When the protrusion 43 abuts against the switch body 1, it effectively blocks and avoids the complete connection between the first conductive member 41 and the first plug-in portion 12, the second conductive member 42 and the second plug-in portion 13.

[0048] In this embodiment, the first conductive member 41 , the second conductive member 42 , and the protruding portion 43 are all plate-shaped structures, thereby facilitating the processing and manufacture of the first conductive member 41 , the second conductive member 42 , and the protruding portion 43 .

[0049] As an alternative embodiment, the first conductive member 41 and the second conductive member 42, as well as the protrusion 43, can also be a columnar structure, specifically, a prismatic structure or a cylindrical structure. The conductive structure 4 is made of copper, which has advantages such as good conductivity and low price.

[0050] The thickness of the protrusion 43 is smaller than that of the first conductive member 41 and the second conductive member 42 , thereby facilitating the distinction between the protrusion 43 and the first conductive member 41 and the second conductive member 42 , while also saving material for making the protrusion 43 .

[0051] Specifically, the first plug-in portion 12 or the second plug-in portion 13, and the insertion portion 14 are all grooves, and a guide surface 3 is provided at the opening of the groove. The guide surface 3 is an inclined surface inclined toward the center of the groove. The setting of the guide surface 3 facilitates the insertion of the first conductive member 41 and the second conductive member 42, and the protrusion 43, and provides guidance for the insertion of the first conductive member 41 and the second conductive member 42, and the protrusion 43.

[0052] The anti-reverse insertion structure of this protective electrical appliance is not only applicable to circuit breakers, but also to fuses, surge protectors, reclosing circuit breakers or circuit breakers with internal electric operation structures. The anti-reverse insertion structure of this protective electrical appliance can be used to prevent reverse connection during installation.

[0053] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A structure for protecting an electrical appliance from reverse insertion, comprising: The switch body (1) comprises a first plug-in portion (12) and a second plug-in portion (13), wherein the first plug-in portion (12) and the second plug-in portion (13) are symmetrically distributed about an imaginary center line of the switch body (1); A conductive structure (4) comprising a first conductive member (41) corresponding to the first plug-in portion (12), and a second conductive member (42) corresponding to the second plug-in portion (13); It is characterized by: The switch body (1) is further provided with an insertion portion (14), and the conductive structure (4) is provided with a protrusion (43); the protrusion (43) and the insertion portion (14) match when the switch body (1) is assembled along a preset direction, and are misaligned when assembled along a non-preset direction; the preset direction is the direction when the first plug-in portion (12) corresponds to the first conductive member (41); The conductive structure (4) is simultaneously inserted into the first plug-in portion (12) or the second plug-in portion (13), and the insertion portion (14); a conductive clip (2) is provided in each of the first plug-in portion (12) or the second plug-in portion (13), and the insertion portion (14); The length of the protrusion (43) is greater than the length of the first conductive member (41) and the second conductive member (42); or, the length of the protrusion (43) is equal to or less than the length of the first conductive member (41), assuming that the distance between the end of the conductive clip (2) close to the switch body end (11) and the switch body end (11) is a first distance, the difference in length between the protrusion (43) and the first conductive member (41) is a second distance, and the first distance is greater than the second distance.

2. The anti-inverted insertion structure for protecting electrical appliances according to claim 1, characterized in that: The inserting portion (14) is arranged close to the first plug-in portion (12) or the second plug-in portion (13).

3. The anti-inverted insertion structure for protecting electrical appliances according to claim 1, characterized in that: The inserting portion (14) is a groove-shaped structure that is not symmetrically distributed about the imaginary center line, and the protruding portion (43) is a protrusion that is adapted to the groove-shaped structure.

4. The anti-inverted insertion structure for protecting an electrical appliance according to any one of claims 1 to 3, characterized in that: The protruding portion (43) is a signal terminal.

5. The anti-inverted insertion structure for protecting an electrical appliance according to any one of claims 1 to 4, characterized in that: The first conductive member (41), the second conductive member (42), and the protruding portion (43) are all plate-shaped structures.

6. The anti-inverted insertion structure for protecting electrical appliances according to claim 5, characterized in that: The first plug-in portion (12) or the second plug-in portion (13), and the inserting portion (14) are all grooves, and a guide surface (3) is provided at the opening of the groove.

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