Mounting structure of isolating switch and power converter

Abstract

The invention discloses a mounting structure of an isolating switch and a power converter, and the mounting structure also comprises a pedestal, at least two rigid supporting members and a first fastening member. The rigid supporting piece sequentially penetrates through the first shell, the second shell between the base and the first shell and the interior of the base in the first direction. The first end of the rigid supporting piece is fixed on the first shell, and the second end of the rigid supporting piece is located in the base; the first fastening piece sequentially penetrates through the base and the second shell between the base and the first shell, and penetrates into the first shell to be fastened with the first end of the rigid supporting piece; the second shell comprises a contact chamber and supporting chambers, the supporting chambers are used for containing the rigid supporting pieces, the number and the positions of the supporting chambers are in one-to-one correspondence with those of the rigid supporting pieces, and the supporting chambers are arranged on the two sides of the contact chamber respectively and separated from the contact chamber; the mounting structure has the characteristic that the rigid supporting piece is convenient to mount.

Description

Technical Field

[0001] The invention relates to an inverter, which belongs to a rotary isolating switch in the inverter, and in particular to a mounting structure of the isolating switch. Background Art

[0002] Conventional rotary isolating switches, whose switch unit layers and operating unit layers are stacked in sequence in one direction, are a type of stacked switch. For this type of switch, after all, it is a stack of multiple independently processed switch units. As the number of switch unit layers increases, the overall structure may not be very smooth after assembly, for example, it looks obviously bent or uneven, which is very unpleasant, and the electrical performance of the switch may be affected if there is a deviation.

[0003] To this end, those skilled in the art add a rigid bracket to the outside of the stacked isolating switch. The use of the rigid bracket can not only improve the strength of the switch, but also ensure that each switch unit layer is more neat.

[0004] However, since the rigid bracket is generally made of metal and is directly exposed to the outside of the disconnector, such a rigid bracket is easily oxidized and rusted by the environment. Moreover, the rigid bracket can also conduct electricity, which may pose a safety hazard. Summary of the invention

[0005] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and to provide a mounting structure for an isolating switch to achieve internalization of a rigid bracket.

[0006] The present invention provides: a mounting structure of an isolating switch, comprising at least two layers of switch units and operating units, wherein each switch unit is sequentially stacked below the operating unit along a first direction; the operating unit comprises a first shell, and the switch unit comprises a second shell; wherein, it also comprises a base, at least two rigid support members and a first fastener; the base is the second shell of the tail-layer switch unit or the base is arranged below the second shell of the tail-layer switch unit; the rigid support member is sequentially passed through the first shell, the second shell between the base and the first shell, and the interior of the base along the first direction; the first end of the rigid support member is fixed to the first shell, and the second end of the rigid support member is in the base; the first fastener sequentially passes through the base, the second shell between the base and the first shell, penetrates into the first shell and is fastened to the first end of the rigid support member; the second shell comprises a contact chamber and a support chamber, the support chamber is used to accommodate the rigid support member, the number and position of the support chamber correspond one-to-one to the rigid support member, and the support chamber is arranged on both sides of the contact chamber and separated from the contact chamber.

[0007] In some embodiments of the present application, the supporting chambers on each second shell between the base and the first shell are channels, which are through in a first direction and closed in other directions; the base has a receiving groove, and the second end of the rigid support member is in the receiving groove.

[0008] In some embodiments of the present application, the opening of the channel in the first direction is an upper opening and a lower opening, the upper opening has an annular protrusion surrounding the upper opening, the lower opening is provided with an adaptive groove structure, and the annular protrusion of the switch unit of the next layer is inserted into the groove structure of the previous layer; In some embodiments of the present application, the opening of the channel in the first direction is an upper opening and a lower opening, the lower opening has an annular protrusion surrounding the lower opening, the upper opening is provided with an adaptive groove structure, and the annular protrusion of the upper layer of switch units is inserted into the groove structure of the lower layer.

[0009] In some embodiments of the present application, the number of first fasteners corresponding to each rigid support member is at least two, and they are arranged on both sides of the rigid support member in the second direction, and the second direction is perpendicular to the first direction.

[0010] In some embodiments of the present application, the second housing includes a through hole for the first fastener to pass through, and the through hole is separated from the support chamber and the contact chamber; In some embodiments of the present application, the second shell includes a through hole for the first fastener to pass through, the through hole is separated from the support chamber and the contact chamber, an annular protrusion surrounding the upper opening is provided at the upper opening of the through hole, and an adaptive groove is provided at the lower opening of the through hole, and the annular protrusion of the next layer of switch unit is inserted into the groove of the upper layer.

[0011] In some embodiments of the present application, the second shell includes a through hole for the first fastener to pass through, the through hole is separated from the support chamber and the contact chamber, the lower opening of the through hole is provided with an annular protrusion surrounding the lower opening, the upper opening of the through hole has an adaptive groove, and the annular protrusion of the upper layer of the switch unit is inserted into the groove of the lower layer.

[0012] In some embodiments of the present application, the first end of the rigid support member is a bending portion, which is arranged perpendicular to the first direction and abuts against the inner wall of the first shell to achieve fixation of the first end of the rigid support member and the first shell.

[0013] In some embodiments of the present application, the first end of the rigid support member is a bending portion, which is arranged perpendicular to the first direction. The bending portion and the inner wall of the first shell are fastened by a second fastener to achieve fixation of the first end of the rigid support member and the first shell.

[0014] In some embodiments of the present application, the first shell includes a base and an upper cover, the base is provided with a mechanism mounting cavity and a second bracket cavity, the number and position of the second bracket cavity correspond one-to-one with the rigid support member, and the second bracket cavity is arranged on both sides of the mechanism mounting cavity; it also includes a second fastener, the second fastener passes through the upper cover, the first end of the rigid support member, and the base in sequence for fastening, so as to achieve the fixation of the first end of the rigid support member and the first shell.

[0015] In some embodiments of the present application, the rigid support member includes a bending portion and a penetration portion, the penetration portion is connected to the bending portion, the bending portion is the first end of the rigid support member, and the end of the penetration portion away from the bending portion is the second end of the rigid support member; the length dimension of the bending portion in the second direction is greater than the length dimension of the penetration portion in the second direction, and the bending portion is offset from the second bracket chamber.

[0016] In some embodiments of the present application, the second support chamber includes an upper chamber and a lower chamber, the length dimension of the upper chamber in the second direction is greater than the length dimension of the lower chamber in the second direction; the upper chamber is connected to the lower chamber, and the lower chamber is connected to the supporting chamber, the bending portion is located in the upper chamber and abuts against the inner wall of the upper chamber, and the penetrating portion passes through the lower chamber and the supporting chamber along the first direction.

[0017] A power converter comprises a box body, on which an isolating switch is arranged. The isolating switch adopts the above-mentioned isolating switch.

[0018] Compared with the prior art, the present invention has the following advantages: With this structure, firstly, since the rigid support member is sequentially arranged along the first direction through the first shell, the second shell between the base and the first shell, and the interior of the base, compared with the rigid support member exposed to the outside, this built-in rigid support member is not easily oxidized and has stronger stability. The entire switch looks more beautiful and avoids the potential safety hazards caused by exposure. Secondly, the first end of the rigid support member is fixed to the first shell, and the second end of the rigid support member is in the base. The first fastener sequentially passes through the base, the second shell between the base and the first shell, and penetrates into the first shell to be fastened to the first end of the rigid support member. This fastening method can ensure that the rigid support member is firmly fastened to the shell and enhance the stability of the first shell and the second shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. Figure 1 A schematic diagram of a power converter according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of an isolating switch in an embodiment of the present invention is shown; Figure 3 A schematic diagram of a partially cutaway is shown in an embodiment of the present invention; Figure 4 A three-dimensional diagram of the second end of the rigid support member and the base in an embodiment of the present invention is shown; Figure 5 A schematic diagram of a rigid support member in an embodiment of the present invention is shown; Figure 6 A schematic diagram of a base in an embodiment of the present invention is shown; Figure 7 A schematic diagram of a second housing in an embodiment of the present invention is shown; Figure 8 A schematic diagram of a base in an embodiment of the present invention is shown; Fig. 9 A cross-sectional view of two adjacent second housings in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. Example

[0025] like Figure 1-9 As shown, an embodiment of the present invention is a power converter 100, which is also called an inverter, and includes a box 101, and an isolating switch 200 is provided inside. The isolating switch 200 includes an operating unit 201 and a switch unit 202, and the operating unit 201 is used to drive the switch unit 202 so that the switch unit 202 can be connected and disconnected. Here, a part of the operating unit 201 is located outside the box 101, so that the user can operate it.

[0026] The installation structure of the isolating switch 200 is as follows: The operating unit 201 includes a first housing 2010, and an operating mechanism is provided inside the housing. The user can switch the switch unit 202 on and off through the operating mechanism. The specific related structure is not the invention point of the present application and will not be described in detail here.

[0027] The switch unit 202 includes a second housing 2020, and the second housing 2020 has components such as a moving contact and a stationary contact. The connection and separation of the moving and stationary contacts can realize the connection and disconnection of the switch unit 202. The power source of the moving contact comes from the operating mechanism. The specific related structure is not the invention point of this application and will not be described in detail here. The second housing 2020 of each switch unit 202 is stacked in sequence below the first housing 2010 along the first direction S1. The first direction S1 here can be understood as the height direction of the product.

[0028] The base 2020' is the second housing 2020 of the last layer of switch unit 202, and it also has moving contacts, static contacts and other components inside. Of course, in addition to this, the base 2020' can also be a cover different from the second housing 2020, which only bears the function of installation and does not install moving contacts, static contacts and other components.

[0029] There are two rigid support members 203 , and there is a gap between the two rigid support members 203 in the third direction S3 , that is, there is a gap in the length direction of the product.

[0030] The number of the rigid support members 203 here can also be set to be multiple.

[0031] The rigid support member 203 is a bracket, and its material is of many kinds, such as stainless steel, iron, and any metal material or alloy that is stronger than the plastics such as the first shell 2010, the second shell 2020, and the base 2020'.

[0032] The rigid support member 203 here is sequentially arranged along the first direction S1 in the first shell 2010, the second shell 2020 between the base 2020' and the first shell 2010, and the base 2020'. What is expressed here is that the rigid support member 203 is completely in the second shell 2020 and the base 2020' between the first shell 2010, the base 2020' and the first shell 2010. It effectively prevents the rigid support member 203 from being exposed, and has higher anti-oxidation performance, protective performance and insulation performance. The first end 2031 of the rigid support member 203 is fixed on the first shell 2010, and the second end 2032 of the rigid support member 203 is in the base 2020'.

[0033] The second housing 2020 , except the base 2020 ′, includes a contact chamber 2021 and a support chamber 2022 . The support chamber 2022 is used to accommodate the rigid support member 203 .

[0034] The contact chamber 2021 is used to place the moving contact and the stationary contact. The number and position of the support chamber 2022 correspond to the rigid support member 203 one by one, that is, there are two support chambers 2022, which are arranged on both sides of the contact chamber 2021 in the third direction S3.

[0035] The support chamber 2022 and the contact chamber 2021 are separated, and the separation is formed on the wall of the second housing 2020. In short, the support chamber 2022 is closed in all directions except the first direction S1. Such separation can ensure the insulation performance and prevent the arc of the moving contact and the static contact from entering the support chamber 2022 and being transmitted to the rigid support member 203.

[0036] Specifically, all the supporting chambers 2022 of the second shell 2020 between the base 2020' and the first shell 2010 are channels, and the channels are through in the first direction S1, that is, the channels have an upper opening and a lower opening, and the rest of the channels are closed (it can also be said that the channel walls are closed), so that the rigid support member 203 can be set through the channel.

[0037] In order to increase the creepage distance, an annular protrusion 2022a surrounding the upper opening is provided at the upper opening of the channel, and an adaptive groove structure 2022b is provided at the lower opening of the channel, so that the annular protrusion 2022a of the next layer of switch units 202 can be inserted into the groove structure 2022b of the previous layer to increase the creepage distance. Of course, the annular protrusion 2022a and the groove structure 2022b here can also be swapped.

[0038] Here, the base 2020' has a receiving groove 2022', and the second end 2032 of the rigid support member 203 is in the receiving groove 2022'. That is to say, when the base 2020' is the second housing 2020 of the last layer of switch units 202, it cooperates with the remaining second housing 2020 supporting chambers 2022 to form a receiving groove 2022'.

[0039] The first fastener 204 passes through the base 2020', the second housing 2020 between the base 2020' and the first housing 2010 in sequence, and penetrates into the first housing 2010 to be fastened to the first end 2031 of the rigid support member 203. In this way, through the cooperation of the first fastener 204 and the rigid support member 203, the rigid support member 203 and the first housing 2010, the second housing 2020 between the base 2020' and the first housing 2010, and the base 2020' can be stably installed to improve the overall stability.

[0040] Here, the first fastener 204 is a bolt, and each rigid support member 203 corresponds to two bolts, and there is a gap between the two bolts in the second direction S2. The second direction S2 here refers to the width direction of the product. The first fastener 204 can be directly screwed into the threaded hole of the rigid support member 203, or screwed into a nut for fixing, or screwed into a riveted nut integrated on the rigid support member 203 for fixing.

[0041] Here, the first fastener 204 penetrates the second housing 2020 through the through hole 2023 of the second housing 2020, and the through hole 2023 is separated from the support chamber 2022 and the contact chamber 2021. Such a setting can greatly improve the insulation performance and prevent the arc from entering the through hole 2023 and being transmitted to the first fastener 204.

[0042] Similarly, in order to increase the creepage distance, an annular protrusion 2023a surrounding the upper opening is provided at the upper opening of the penetration hole 2023, and an adaptive groove 2023b is provided at the lower opening of the penetration hole 2023. The annular protrusion 2023a of the lower layer of switch unit 202 is inserted into the groove 2023b of the upper layer to increase the creepage distance. Of course, in addition to this, the annular protrusion 2023a and the groove 2023b here can also be set in reverse.

[0043] The first housing 2010 includes a base 2012 and an upper cover 2011 . The base 2012 is provided with a mechanism installation cavity 2011 a and a second bracket cavity 2011 b . The number and position of the second bracket cavity 2011 b correspond one-to-one to the rigid support member 203 .

[0044] The mechanism installation cavity 2011a is undoubtedly used to place the operating mechanism. The number of the second bracket chambers 2011b is two, which are arranged on both sides of the mechanism installation cavity 2011a in the third direction S3.

[0045] Here, the second end 2032 of the rigid support member 203 is a bent portion, which is perpendicular to the first direction S1. The bent portion here is fixed to the inner wall of the second bracket chamber 2011b by abutting against the inner wall of the first shell 2010 (that is, the inner wall of the second bracket chamber 2011b) or by the second fastener 205 on the inner wall of the second bracket chamber 2011b, or by abutting and fastening with the second fastener 205.

[0046] No matter which fixing method is used, the installation strength of the rigid support member 203 can be improved. Here, a combination of the two is adopted, that is, the second fastener 205 passes through the upper cover 2011, the bent portion, and the base 2012 in sequence for fastening, and the bent portion also rests on the inner wall of the second bracket chamber 2011b.

[0047] Here, the rigid support member 203 includes a bending portion and a penetration portion 2033, the penetration portion 2033 is connected to the bending portion, and the penetration portion 2033 is arranged at a vertical angle with the bending section. The cross-section of the penetration portion 2033 is in a "U" shape, and can also be in a "I" shape or a common DIN rail shape.

[0048] Here, the length dimension of the bending portion in the second direction S2 is greater than the length dimension of the penetration portion 2033 in the second direction S2. The bending portion is the first end 2031 of the rigid support member 203, and the end of the penetration portion 2033 away from the bending portion is the second end 2032 of the rigid support member 203 (located in the base 2020').

[0049] Correspondingly, the second bracket chamber 2011b includes an upper chamber 2011b1 and a lower chamber 2011b2, and the length dimension of the upper chamber 2011b1 in the second direction S2 is greater than the length dimension of the lower chamber 2011b2 in the second direction S2.

[0050] The upper chamber 2011b1 is connected to the lower chamber 2011b2, and the lower chamber 2011b2 is connected to the supporting chamber 2022. The bending portion is located in the upper chamber 2011b1 and abuts against the inner wall of the upper chamber 2011b1. The penetrating portion 2033 passes through the lower chamber 2011b2 and the supporting chamber 2022 along the first direction S1.

[0051] For all the second shells 2020 , a first protrusion 2020 a is provided on its side wall, and the through hole 2023 and the supporting chamber 2022 are both located inside the first protrusion 2020 a .

[0052] For the first housing 2010, the side wall of the base 2012 has a second protrusion 2010a corresponding to the first protrusion 2020a, and the lower chamber 2011b2 is located inside the second protrusion 2010a. Inside the base 2012, the upper chamber 2011b1 is separated from the mechanism installation chamber 2011a, specifically by a partition 2013. Of course, the separation here includes both separation to achieve complete insulation and separation to distinguish the two.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An installation structure of an isolating switch, comprising at least two layers of switch units and operating units, wherein each switch unit is sequentially stacked below the operating unit along a first direction; the operating unit comprises a first housing, and the switch unit comprises a second housing; characterized in that: It also includes a base, at least two rigid support members and a first fastener; the base is the second housing of the rear switch unit or the base is arranged below the second housing of the rear switch unit; The rigid support member is sequentially arranged along the first direction through the first housing, the second housing between the base and the first housing, and the interior of the base; the first end of the rigid support member is fixed to the first housing, and the second end of the rigid support member is in the base; The first fastener passes through the base, the second shell between the base and the first shell in sequence, and enters into the first shell to be fastened to the first end of the rigid support member; the second shell includes a contact chamber and a support chamber, the support chamber is used to accommodate the rigid support member, the number and position of the support chambers correspond one-to-one with the rigid support members, and the support chambers are arranged on both sides of the contact chamber and separated from the contact chamber.

2. The installation structure of the isolating switch according to claim 1, characterized in that: The supporting chambers on each second shell between the base and the first shell are all channels, which are through in a first direction and closed in other directions; the base has a receiving groove connected to the channel, and the second end of the rigid support member is in the receiving groove.

3. The installation structure of the isolating switch according to claim 2, characterized in that: The openings of the channel in the first direction are an upper opening and a lower opening, the upper opening is provided with an annular protrusion surrounding the upper opening, and the lower opening is provided with an adaptive groove structure, and the annular protrusion of the switch unit of the next layer is inserted into the groove structure of the previous layer; Alternatively, the opening of the channel in the first direction is an upper opening and a lower opening, the lower opening has an annular protrusion surrounding the lower opening, the upper opening is provided with an adaptive groove structure, and the annular protrusion of the upper layer of switch units is inserted into the groove structure of the lower layer.

4. The installation structure of the isolating switch according to claim 1, characterized in that: The number of first fasteners corresponding to each rigid support member is at least two, and they are arranged on both sides of the rigid support member in the second direction, and the second direction is perpendicular to the first direction.

5. The installation structure of the isolating switch according to claim 1, characterized in that: The second housing includes a through hole for the first fastener to pass through, and the through hole is separated from the support chamber and the contact chamber; Or, the second housing includes a through hole for the first fastener to pass through, the through hole is separated from the support chamber and the contact chamber, an annular protrusion surrounding the upper opening is provided at the upper opening of the through hole, and an adaptive groove is provided at the lower opening of the through hole, and the annular protrusion of the switch unit of the next layer is inserted into the groove of the previous layer; Or, the second shell includes a through hole for the first fastener to pass through, the through hole is separated from the support chamber and the contact chamber, the lower opening of the through hole is provided with an annular protrusion surrounding the lower opening, the upper opening of the through hole is provided with an adaptive groove, and the annular protrusion of the upper layer of the switch unit is inserted into the groove of the lower layer.

6. The installation structure of the isolating switch according to claim 1, characterized in that: The first end of the rigid support member is a bent portion, the bent portion is arranged perpendicular to the first direction, and the bent portion abuts against the inner wall of the first shell to achieve the fixation of the first end of the rigid support member and the first shell; Or / and, the first end of the rigid support member is a bending portion, the bending portion is arranged perpendicular to the first direction, and the bending portion and the inner wall of the first shell are fastened by a second fastener to achieve fixation of the first end of the rigid support member and the first shell.

7. The installation structure of an isolating switch according to claim 1, characterized in that: The first shell includes a base and an upper cover, the base is provided with a mechanism installation cavity and a second bracket cavity, the number and position of the second bracket cavity correspond one-to-one with the rigid support member, and the second bracket cavity is arranged on both sides of the mechanism installation cavity; it also includes a second fastener, the second fastener passes through the upper cover, the first end of the rigid support member, and the base in sequence for fastening to achieve the fixation of the first end of the rigid support member and the first shell.

8. The installation structure of the isolating switch according to claim 7, characterized in that: The rigid support member includes a bending portion and a penetration portion, the penetration portion is connected to the bending portion, the bending portion is the first end of the rigid support member, and the end of the penetration portion away from the bending portion is the second end of the rigid support member; the length dimension of the bending portion in the second direction is greater than the length dimension of the penetration portion in the second direction, and the bending portion is offset from the second bracket chamber.

9. The installation structure of the isolating switch according to claim 7, characterized in that: The second support chamber includes an upper chamber and a lower chamber, the length dimension of the upper chamber in the second direction is greater than the length dimension of the lower chamber in the second direction; the upper chamber is connected to the lower chamber, and the lower chamber is connected to the support chamber, the bending portion is located in the upper chamber and abuts against the inner wall of the upper chamber, and the penetration portion passes through the lower chamber along the first direction.

10. A power converter, comprising a housing, characterized in that: An isolating switch is arranged on the box body, and the isolating switch adopts an isolating switch installation structure as described in any one of claims 1 to 9.

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