Turnover sealing structure, air duct assembly and converter

Abstract

The invention discloses an overturning sealing structure which is used for enabling a first opening and a second opening, opposite to each other in the first direction, of a first object and a second object to be in butt joint with each other, at least one of the first opening and the second opening is provided with an elastic sealing piece, and the overturning sealing structure is characterized in that the first object is suitable for moving in the second direction perpendicular to the first direction; the second object is rotatably mounted on the bracket around a first axis in a third direction; before the first object is installed in place, the second object rotates and stops at the first position, so that the first opening and the second opening form an interval in the first direction; after the first object is installed in place, the second object rotates and stops at the second position, so that the first opening and the second opening are in butt joint with each other and abut against the elastic sealing piece to form sealing; the support comprises a first supporting arm and a second supporting arm which are arranged in the third direction, and the second object is located between the first supporting arm and the second supporting arm. The first supporting arm and the second supporting arm are provided with limiting protrusions facing the second object in a protruding mode, and the limiting protrusions abut against the second object in the third direction so as to limit the position, relative to the support, of the second object in the third direction. By the adoption of the overturning sealing structure, the air ducts cannot rub each other during installation, the abrasion condition of the sealing piece strips can be improved, and the sealing performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation structures, and particularly to a flipping seal structure, a wind tunnel assembly, and a converter. Background Art

[0002] In a converter, an air-cooling method is required to dissipate heat from power components. The air duct of the radiator needs to be connected to the outside of the converter, but at the same time, the air duct needs to be isolated from other spaces inside the converter to prevent impurity particles in the outside air from contaminating the electronic devices inside the converter. For this purpose, a hollow wind tunnel is provided to form an air duct isolated from other spaces inside the converter. At the same time, due to the limitation of the device layout inside the converter, a large interconnected wind tunnel assembly is formed by combining multiple small wind tunnels. A sealing strip needs to be provided at the edge position of the wind tunnel to form a sealed connection between adjacent small wind tunnels. Usually, when the wind tunnel is fixed and connected to another wind tunnel, the installation direction of the wind tunnel needs to be consistent with the axial direction of the end opening, so as to form an axial docking fit. However, when there are space limitations in the converter, the installation direction of the wind tunnel may be at a certain angle to the axial direction of the end opening. At this time, when the wind tunnel is installed, the sealing strips on the two wind tunnels to be connected will rub against each other, resulting in wear of the sealing strips and a decrease in sealing performance. Summary of the Invention

[0003] The object of the present invention is to overcome the above-mentioned defects or problems in the background art, and provide a flipping seal structure, a wind tunnel assembly, and a converter. By using this flipping seal structure, the wind tunnels will not rub against each other during installation, the wear of the sealing strips can be improved, and the sealing performance can be enhanced.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] Technical solution 1: A flipping and sealing structure is used to dock the first opening and the second opening facing each other in the first direction of the first object and the second object. At least one of the first opening and the second opening is provided with an elastic seal. It includes: The first object is adapted to move in a second direction perpendicular to the first direction; The second object is rotatably mounted on the bracket around a first axis in a third direction perpendicular to the first direction and the second direction; Before the first object is installed in place, the second object rotates and docks at a first position so that the first opening and the second opening form a gap in the first direction; After the first object is installed in place, the second object rotates and docks at a second position so that the first opening and the second opening are docked with each other and press against the elastic seal to form a seal; The bracket includes a first arm and a second arm arranged in the third direction, and the second object is located between the first arm and the second arm; The first arm and the second arm are protruded with limiting protrusions facing the second object, and the limiting protrusions are abutted against the second object in the third direction to limit the position of the second object relative to the bracket in the third direction.

[0006] Technical solution 2 based on technical solution 1: The limiting protrusions on the first arm and the second arm are arranged in pairs in the third direction.

[0007] Technical solution 3 based on technical solution 2: The first arm and the second arm extend in the second direction; The position of the first axis on the bracket corresponds to the rear end position of the second object in the second direction, and at least one pair of the limiting protrusions corresponds to the front end position of the second object away from the first axis in the second direction on the bracket.

[0008] Technical solution 4 based on technical solution 3: At least one pair of the limiting protrusions corresponds to the rear end position of the second object in the second direction on the bracket.

[0009] Technical solution 5 based on any one of technical solutions 1 to 4: The bracket is respectively provided with a first docking part and a second docking part corresponding to the first position and the second position of the second object. The first docking part and the second docking part are provided with fixing jacks. The second object forms a limiting fit by inserting a fixing pin into the fixing jack in the third direction. The fixing pin is adapted to withdraw from the fixing jack to enable the second object to be switched between the first position and the second position.

[0010] Technical solution 6 based on technical solution 5: The second object is provided with a fixing lug at the front end position in its second direction for cooperating with the fixing pin. The fixing lug is provided with a pin hole penetrating in the third direction and adapted for the fixing pin to penetrate through.

[0011] Technical solution seven based on technical solution six: When the second object is docked at the second position, it is fixed to the bracket by a fastener located at the rear end position in the second direction.

[0012] Technical solution eight based on technical solution seven: The second object is located above the first object, and the second docking portion is adapted to define the degree of deformation of the elastic seal caused by the extrusion of the first opening and the second opening through the limit cooperation with the second object.

[0013] In addition, the present invention also provides technical solution nine: A hair dryer assembly, which includes a first hair dryer and a second hair dryer. The feature is that the first hair dryer and the second hair dryer adopt the flip-sealing structure described in any one of technical solutions one to eight, so that the first opening and the second opening facing each other on the first hair dryer and the second hair dryer are mutually docked and sealed and communicated. The first hair dryer is the first object, and the second hair dryer is the second object.

[0014] In addition, the present invention also provides technical solution ten: An inverter, which includes a power module composed of a switch module and a capacitor module. The power module uses the hair dryer assembly described in technical solution nine for heat dissipation.

[0015] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0016] Technical solution one provides a flip-sealing structure, which is used to make the first opening and the second opening facing each other in the first direction on the first object and the second object mutually docked. Through this flip-sealing structure, when the installation directions of the first object and the second object have an angle with the first direction, for example, the installation direction is perpendicular to the first direction, that is, installed along the second direction, before the installation is in place, the first opening and the second opening will not contact each other. When this flip-sealing structure is applied to the hair dryer structure in the inverter mentioned in the background art, the seal strips on the two hair dryers to be connected will not rub against each other, which can avoid the wear of the seal strips and improve the sealing performance.

[0017] Among them, the first object is allowed to move in the second direction, while the second object is allowed to rotate around the first axis, and the extending direction of the first axis is the third direction. Therefore, the second object can be converted between the first position and the second position around the first axis. Among them, when the second object swings away from the first object to the first position, a gap can be formed in the first direction between the first opening and the second opening. This gap enables the elastic seal between the two not to be damaged by friction when the first object moves in the second direction. After the first object is installed in place, the second object can rotate around the first axis from the first position towards the first object to the second position. The second opening synchronously approaches the first opening and cooperates with the first opening to apply pressure to the elastic seal, so as to form a seal between the two while the first opening and the second opening are docked with each other by pressing against the elastic seal. Among them, the second object can stop at both the first position and the second position to facilitate the movement of the first object in the second direction.

[0018] In addition, the above-mentioned second object is rotationally installed on the bracket. In order to improve the stability of the second object during rotation, the bracket includes a first arm and a second arm. The second object is located between the first arm and the second arm in the third direction. Through the mutual cooperation of the first arm and the second arm, the second object is kept stable during rotation. However, since the rotational connection between the second object and the bracket needs to be realized through a rotating shaft structure, during the up-and-down flipping process of the second object, the position of the second object in the third direction will shift. For example, the second object may be closer to the first arm as a whole. This situation will obviously cause a deviation after the second opening and the first opening are docked with each other in the first direction, and further lead to deterioration of the sealing effect between the first opening and the second opening. In response to this, in this technical solution, limiting protrusions protruding towards the second object are provided on the first arm and the second arm. The limiting protrusions are more protruding than the surface of the first arm and the second arm facing the second object, which enables the limiting protrusions to abut against the side wall of the second object facing them in the third direction, thereby limiting the position of the second object relative to the bracket in the third direction. As long as this position is determined, it can be ensured that after the second object is flipped to the second position, the first opening and the second opening are docked with each other and a good seal is formed by pressing against the elastic seal. Among them, the limiting protrusions are in point contact or line contact. Compared with the surface contact method of clamping and abutting the second object by the first arm and the second arm as a whole, the contact area between the first arm, the second arm and the second object can be greatly reduced, thereby reducing the frictional force generated by the bracket on the second object and avoiding the bracket from hindering the normal flipping of the second object. At the same time, the limiting protrusions can accurately define a certain space in the third direction and limit the second object to move in this space by abutting against the second object.

[0019] In Technical Solution 2, the limiting protrusions are arranged in pairs, which can limit the second object at corresponding positions in the third direction from both ends in the third direction, avoiding the deflection of the front and rear parts of the second object in the second direction due to different abutting positions, further ensuring the movement of the second object in a determined space and ensuring the accurate docking between the first opening and the second opening.

[0020] In Technical Solution 3, at least a pair of limiting protrusions are arranged at the front end position of the second object corresponding to the second direction, so as to be separated from the first axis position corresponding to the rear end position of the second object in the second direction by a certain distance, ensuring the stability when the second object flips. This is because when the first axis is arranged at the rear end position of the second object corresponding to the second direction, the part of the second object at the front end position in the second direction becomes the part with the largest movement amplitude. Such a large-amplitude movement has higher requirements for the movement stability of the second object, and it is necessary to ensure that the second object can still accurately dock the second opening with the first opening during the large-amplitude movement. Therefore, the limiting protrusions are arranged at this front end position to accurately position the second object in the third direction at this front end position.

[0021] In Technical Solution 4, a limiting protrusion is also arranged at a position on the bracket close to the first axis. Arranging the limiting protrusion at this position can cooperate with the limiting protrusion arranged at a position far from the first axis to form a limit in the third direction at both the front and rear parts of the second object in the second direction, ensuring that the second object can accurately move in the defined space whether at the front side part or the rear side part in the third direction.

[0022] In Technical Solution 5, the second object is rotatably mounted on the bracket, and the bracket is provided with a first docking part and a second docking part. The second object can form a limiting cooperation with the first docking part and the second docking part in the first direction to maintain the docking state, facilitating the movement of the first object in the second direction, and at the same time, the second object can maintain the docking state without maintaining the operation on the second object. Fixing jacks are arranged on the first docking part and the second docking part, and the fixing pin on the second object can be inserted into the fixing jack along the third direction to form a limiting cooperation, so that the second object can dock at the first position and the second position, and the fixing pin can be withdrawn from the fixing jack, so that the second object can realize the conversion between the first position and the second position by operating the position of the fixing pin.

[0023] In Technical Solution 6, a fixing lug is arranged at the front end position of the second object, and a pin hole is arranged on the fixing lug. The fixing pin can penetrate through the pin hole and the fixing jack at the same time, so that the second object can form a detachable fixed connection cooperation relationship with the bracket.

[0024] In Technical Solution VII, when the second object docks at the second position, it is also fixed to the bracket by a fastener to ensure that the second object can be stably locked on the bracket.

[0025] In Technical Solution VIII, the second docking part also limits the distance from the second opening to the first opening, avoiding all the gravity borne by the second object being transmitted to the elastic seal, making the pressure on the elastic seal controllable, preventing the elastic seal from being damaged due to excessive deformation, and improving the service life of the elastic part.

[0026] Technical Solution IX provides a wind tunnel assembly, which includes a first wind tunnel and a second wind tunnel. The first wind tunnel and the second wind tunnel are assembled using the above-mentioned flip-seal structure. By adopting the above-mentioned flip-seal structure, when the first wind tunnel and the second wind tunnel are installed, the elastic seals provided at the corresponding first opening and second opening will not be worn during the installation process, effectively improving the sealing effect after the first wind tunnel and the second wind tunnel are docked.

[0027] Technical Solution X provides a converter, which uses the above-mentioned wind tunnel assembly for heat dissipation. Since the sealing effect after the docking of the wind tunnel assembly is improved, the converter has a better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic diagram of the first state of the wind tunnel assembly related to the embodiment of the present invention;

[0030] Figure 2 It is an exploded schematic diagram of the structure of the wind tunnel assembly related to the embodiment of the present invention Figure 1 ;

[0031] Figure 3 It is an exploded schematic diagram of the structure of the wind tunnel assembly related to the embodiment of the present invention Figure 2 ;

[0032] Figure 4 It is a schematic diagram of the second state of the wind tunnel assembly related to the embodiment of the present invention;

[0033] Figure 5 It is Figure 1 an enlarged schematic diagram of part A in

[0034] Figure 6 It is Figure 1 an enlarged schematic diagram of part B in

[0035] Figure 7 is Figure 2 An enlarged schematic view of part C in

[0036] Description of main reference numerals:

[0037] First object 1; second object 2; first opening 3; second opening 4; elastic seal 5; bracket 6; first arm 7; second arm 8; limit projection 9; first docking part 10; second docking part 11; fixed jack 12; fixed pin 13; fixed lug 14; pin hole 15; side wall 16; fastener 17; first air duct 18; second air duct 19; rotating shaft 20; shaft hole 21. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0039] In the claims, the specification and the above-mentioned accompanying drawings of the present invention, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are for distinguishing different objects and not for describing a specific order.

[0040] In the claims, the specification and the above-mentioned accompanying drawings of the present invention, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "longitudinal", "level", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present invention.

[0041] In the claims, the specification and the above-mentioned accompanying drawings of the present invention, unless otherwise clearly defined, when using terms such as "fixed connection" or "fixedly connected", should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrally connected, and being fixedly connected through other devices or elements.

[0042] In the claims, the specification and the above-mentioned accompanying drawings of the present invention, when using terms such as "comprising", "having" and their variants, are intended to mean "including but not limited to".

[0043] Embodiment

[0044] An embodiment of the present invention relates to a blower assembly, which can be used for the heat dissipation of a converter. Specifically, the converter includes a power module composed of a switching module and a capacitor module, and the power module can be cooled by using the blower assembly involved in this embodiment.

[0045] Refer to Figure 1 and Figure 2 The blower assembly mainly includes a first blower 18 and a second blower 19. Here, the blower refers to a cylindrical member with openings at both ends and a hollow channel formed inside. After the first blower 18 and the second blower 19 are applied to the converter, they are arranged inside the cabinet of the converter. The air inlet and outlet of the blower assembly are affected by the cabinet structure of the converter. For example, in this embodiment, the first blower 18 is located below, the second blower 19 is located above, the air inlet of the first blower 18 faces downward, the air outlet of the first blower 18 faces upward, the air inlet of the second blower 19 faces downward, the air outlet of the second blower 19 faces backward, and the air outlet of the first blower 18 and the air inlet of the second blower 19 need to form a sealed docking connection so that the first blower 18 and the second blower 19 can be connected into a complete blower structure and dissipate heat from the power module of the converter. Among them, the power module in the converter is arranged on the first blower 18. Specifically, heat dissipation fins can be arranged on the back of the power module, and these heat dissipation fins can extend into the air passage inside the first blower 18.

[0046] Among them, the number of the first blowers 18 in the blower assembly is three, each first blower 18 has an air inlet and an air outlet, the number of the second blowers 19 is one, the second blower 19 has three air inlets and one air outlet, and the three air inlets of the second blower 19 respectively correspond to the air outlets of each first blower 18 and form a docking connection. The reason for such a setting is that the blower assembly is applied to the converter, and the power module of the converter needs to be connected to three-phase alternating current. Therefore, three groups of power modules are required, and each group of power modules is cooled by a first blower 18. The structure of each first blower 18 is the same, and the structure of each air inlet position of the second blower 19 is also the same. The structure of one air inlet position of the second blower 19 and the structure of one first blower 18 will be described below.

[0047] Refer to Figure 1 and Figure 2, in the air duct assembly involved in this embodiment, a particularly improved flip-sealing structure is adopted. This flip-sealing structure is used to dock the first opening 3 and the second opening 4 facing each other in the first direction of the first object 1 and the second object 2. At least one of the first opening 3 and the second opening 4 is provided with an elastic seal 5. In this embodiment, the first object 1 is the first air duct 18, the second object 2 is the second air duct 19, the air outlet of the first air duct 18 facing upward is the first opening 3, the air inlet of the second air duct 19 facing downward is the second opening 4, and the elastic seal 5 is arranged at the position of the first opening 3. The structure of the second opening 4 on the second air duct 19 refers to Figure 3 .

[0048] It should be noted that in the claims of the present invention, the described directions include the first direction, the second direction, and the third direction. In the description and the accompanying drawings of the present invention, the above-mentioned first direction, second direction, and third direction are respectively marked as the up-down direction, the front-back direction, and the left-right direction to more conveniently describe the above-mentioned flip-sealing structure in the description. In the description of this specification, the above two direction statements will be used for description.

[0049] Referring to Figures 1 to 4 , the first object 1 is adapted to move in a second direction perpendicular to the first direction; the second object 2 is rotatably mounted on the bracket 6 around a first axis in the third direction perpendicular to the first direction and the second direction; before the first object 1 is installed in place, the second object 2 rotates and docks at a first position so that the first opening 3 and the second opening 4 form a gap in the first direction; after the first object 1 is installed in place, the second object 2 rotates and docks at a second position so that the first opening 3 and the second opening 4 are docked with each other and press against the elastic seal 5 to form a seal; the bracket 6 includes a first arm 7 and a second arm 8 arranged in the third direction, and the second object 2 is located between the first arm 7 and the second arm 8; the first arm 7 and the second arm 8 are protruded with a limit protrusion 9 facing the second object 2, and the limit protrusion 9 abuts against the second object 2 in the third direction to limit the position of the second object 2 relative to the bracket 6 in the third direction.

[0050] Specifically, Figure 1 is a schematic diagram of the air duct assembly in the first state. Here, the first state refers to the state when the second object 2 rotates and docks at the first position. Figure 4 is a schematic diagram of the air duct assembly in the second state. Here, the second state refers to the state when the second object 2 rotates and docks at the second position.

[0051] Referring to Figure 1 and Figure 3,, the first opening 3 of the first object 1 faces upward. The first opening 3 is generally rectangular, and an elastic seal 5 is installed on the edge of the first opening 3. The elastic seal 5 can be a rubber strip. Among them, the first object 1 can move along the Figure 1 front-back direction shown. For example, the first object 1 can move on a pre-set track by means of sliding or rolling so that when it is used as the first air duct 18, it can enter the cabinet of the converter. In this embodiment, the movement mode of the first object 1 is not limited, and those skilled in the art can adopt appropriate ways to realize the movement of the first object 1 in the second direction. However, it should be understood that since the first object 1 moves in the second direction, and the second object 2 is located above the first object 1 as the second air duct 19 and at the same time needs to form a butt joint and communication with the first opening 3 on the first object 1. If the elastic seal 5 installed on the first object 1 is always in contact with the second object 2 during the movement of the first object 1 in the second direction, it is easy to cause wear of the elastic seal 5 and result in a decrease in the sealing effect. Therefore, in the flip seal structure provided in this embodiment, the second object 2 is arranged above the first object 1, and at the same time, the second object 2 is rotatably installed on the bracket 6 around the first axis. During the movement of the first object 1 in the second direction, the second object 2 can first turn up around the first axis so that the elastic seal 5 is not in contact with the second object 2. After the first object 1 moves into place, then turn the second object 2 down around the first axis so that the second object 2 abuts against the elastic seal 5 and the first opening 3 and the corresponding second opening 4 form a butt joint seal. Among them, it is defined that the position where the second object 2 reaches after turning up is the first position, and the position where the second object 2 reaches after turning down is the second position. When the second object 2 is in the first position, the first object 1 can move in the second direction to the lower part of the second object 2, and during this process, the elastic seal 5 installed on the first opening 3 is not in contact with the second object 2. When the second object 2 is in the second position, the second object 2 abuts against the elastic seal 5 and the first opening 3 and the corresponding second opening 4 are sealed and butt-connected.

[0052] Refer to Figure 1 and Figure 2 , the second object 2 is rotatably installed on the bracket 6. The bracket 6 includes two support rods extending in the up-down direction. These support rods can be fixedly connected to the frame of the cabinet when the air duct assembly is applied to the cabinet, or directly used as the frame of the cabinet. At the upper position of each support rod, a support arm extending in the front-back direction is fixedly installed by bolts. Among them, the one on the left is the first support arm 7, and the one on the right is the second support arm 8. The second object 2 is rotatably installed on the first support arm 7 and the second support arm 8 and is located between the first support arm 7 and the second support arm 8. Among them, refer to Figure 1 and Figure 6, at the rear side position of the first arm 7 and the second arm 8, there is a shaft hole 21 penetrating in the left - right direction. At the same time, at the corresponding position on the second object 2, there is a shaft rod protruding outward in the left - right direction. The shaft rod can extend into the corresponding shaft hole 21, so that the second object 2 is rotatably connected to the bracket 6. At the same time, the shaft rod and the shaft hole 21 cooperate to define a first axis. The second object 2 can rotate relative to the bracket 6 around this first axis. This first axis is arranged at the rear side position of the bracket 6 or the second object 2. Therefore, the swing amplitude of the front part of the second object 2 is greater than that of the rear part of the second object 2.

[0053] Refer to Figure 1 and Figure 2 , on the first arm 7 and the second arm 8, there are limit protrusions 9. Among them, the protruding direction of the limit protrusion 9 arranged on the first arm 7 is towards the right, and the protruding direction of the limit protrusion 9 arranged on the second arm 8 is towards the left. At the same time, on the second object 2, there are side walls 16 located on both sides in its left - right direction. One side wall 16 faces the first arm 7, and the other side wall 16 faces the second arm 8. The protruding degree of the limit protrusions 9 on the first arm 7 and the second arm 8 is adapted to the space defined by the first arm 7 and the second arm 8 and the size of the second object 2 in the left - right direction, so that each limit protrusion 9 can abut against the corresponding side wall 16 on the second object 2, and further limit the second object 2 in the left - right direction to keep the relative position of the second object 2 fixed. Among them, the formation of the limit protrusion 9 is related to the materials and structures of the first arm 7 and the second arm 8. For example, when the first arm 7 and the second arm 8 adopt metal profiles, the limit protrusions 9 with the required size can be punched at appropriate positions by stamping. In other embodiments, the limit protrusions 9 can also be formed by welding protruding components or screwing protruding components. In addition, the limit protrusion 9 forms an abutting relationship with the second object 2 with its end facing the second object 2. In order to further reduce the friction force of the limit protrusion 9 on the second object 2, the limit protrusion 9 can be integrally set as a semi - spherical shape, so that the end of the limit protrusion 9 forms a point contact with the second object 2.

[0054] Further, the limit protrusions 9 on the first arm 7 and the second arm 8 are arranged in pairs along a third direction. And at least one pair of the limit protrusions 9 is located on the bracket 6 corresponding to the front end position of the second object 2 far from the first axis in a second direction. At the same time, at least one pair of the limit protrusions 9 is located on the bracket 6 corresponding to the rear end position of the second object 2 in the second direction.

[0055] Specifically, refer to Figure 5 、 Figure 6 and Figure 7, in this embodiment, there are two pairs of a total of four limiting protrusions 9. One pair corresponds to the front side position of the second object 2, and the other pair corresponds to the rear side position of the second object 2. Each pair of limiting protrusions 9 corresponds to each other in the left-right direction. The so-called corresponding to each other here means that the connection line of a pair of limiting protrusions 9 is parallel to the left-right direction, or it can be considered that the positions of a pair of limiting protrusions 9 on the first arm 7 and the second arm 8 are the same along the front-rear direction. The limiting protrusions 9 are arranged in pairs, and can limit the second object 2 from both ends in the third direction at the corresponding positions in the third direction, avoiding the deflection of the front end part and the rear end part of the second object 2 in the second direction due to different abutting positions, further ensuring the movement of the second object 2 in a determined space and ensuring the accurate docking between the first opening 3 and the second opening 4. At least one pair of limiting protrusions 9 is arranged at the front end position of the second object 2 in the second direction, so as to be separated from the first axis position corresponding to the rear end position of the second object 2 in the second direction by a certain distance, ensuring the stability when the second object 2 is flipped. This is because when the first axis is arranged at the rear end position of the second object 2 in the second direction, the part of the second object 2 at the front end position in the second direction becomes the part with the largest movement amplitude. This large-amplitude movement has higher requirements for the movement stability of the second object 2, and it is necessary to ensure that the second object 2 can still accurately dock the second opening 4 with the first opening 3 during the large-amplitude movement. Therefore, the limiting protrusions 9 are arranged at this front end position to accurately position the position of the second object 2 in the third direction at this front end position. A limiting protrusion 9 is also arranged at a position on the bracket 6 close to the first axis. Arranging the limiting protrusion 9 at this position can cooperate with the limiting protrusion 9 arranged at a position far from the first axis to form a limit in the third direction at both the front and rear parts of the second object 2 in the second direction, ensuring that the second object 2 can accurately move in the limited space whether it is the front side part or the rear side part in the third direction.

[0056] Further, the bracket 6 is respectively provided with a first docking part 10 and a second docking part 11 corresponding to the first position and the second position of the second object 2. The first docking part 10 and the second docking part 11 are provided with fixing jacks 12. The second object 2 forms a limiting fit by inserting a fixing pin 13 into the fixing jack 12 along the third direction. The fixing pin 13 is adapted to withdraw from the fixing jack 12 so that the second object 2 can be switched between the first position and the second position.

[0057] Specifically, at the front-end position of the second object 2 in its second direction, there is a fixing lug 14 for cooperating with the fixing pin 13. An insertion hole 15 is provided on the fixing lug 14, which penetrates through in the third direction and is adapted for the fixing pin 13 to penetrate through. Meanwhile, when the second object 2 is docked at the second position, it is fixed to the bracket 6 by a fastener 17 located at the rear-end position in the second direction.

[0058] Referring Figure 1 and Figure 5 , at the front end of the second object 2 in the second direction, there are two fixing lugs 14, and the two fixing lugs 14 are arranged in the third direction. An insertion hole 15 penetrating through the fixing lug 14 in the third direction is provided on the fixing lug 14. Meanwhile, on both the first arm 7 and the second arm 8, there are a first docking portion 10 and a second docking portion 11, where the first docking portion 10 is located above the second docking portion 11 in the first direction. In this embodiment, the first arm 7 and the second arm 8 are metal profiles. The second docking portion 11 can be directly provided on the main body of the profile, and the first docking portion 10 can be a metal part fixed to the main body of the profile by bolts. Among them, fixing insertion holes 12 are provided on both the first docking portion 10 and the second docking portion 11, penetrating through in the third direction, and the positions of these two fixing insertion holes 12 have a mating relationship with the insertion hole 15 on the second object 2. That is to say, when the second object 2 is in the first position, the insertion hole 15 on the fixing lug 14 corresponds to the fixing insertion hole 12 on the first docking portion 10. When the second object 2 is in the second position, the insertion hole 15 on the fixing lug 14 corresponds to the fixing insertion hole 12 on the second docking portion 11. When the insertion hole 15 corresponds to a certain fixing insertion hole 12, the fixing pin 13 can pass through the insertion hole 15 and the fixing insertion hole 12 at the same time, so that the second object 2 can be docked at the first docking portion 10 or the second docking portion 11. Or, when it is necessary to flip the second object 2, the fixing pin 13 can be withdrawn from the fixing insertion hole 12. At this time, there is no limiting cooperation relationship between the fixing lug 14 and the arm, and the second object 2 can freely flip within the limited range. By providing the fixing insertion holes 12 on the first docking portion 10 and the second docking portion 11, the fixing pin 13 on the second object 2 can be inserted into the fixing insertion hole 12 in the third direction to form a limiting cooperation, so that the second object 2 can be docked at the first position and the second position, and the fixing pin 13 can be withdrawn from the fixing insertion hole 12, so that the second object 2 can realize the conversion between the first position and the second position by operating the position of the fixing pin 13. Meanwhile, by providing the fixing lug 14 at the front-end position of the second object 2 and the insertion hole 15 on the fixing lug 14, the fixing pin 13 can pass through the insertion hole 15 and the fixing insertion hole 12 at the same time, so that the second object 2 can form a detachable fixed connection and cooperation relationship with the bracket 6.

[0059] Among them, when the second object 2 is turned down to the second position and docked at the second docking portion 11, an open docking and connection has been formed between the second object 2 and the first object 1 at this time. Therefore, the second object 2 can be fixed more firmly on the bracket 6. In this embodiment, through holes can be provided on the support arm at positions corresponding to the fixing lugs 14, and corresponding through holes can be provided on the fixing lugs 14 corresponding to the through holes on the support arm. When the second object 2 is in the second position, a bolt can be passed through the through holes at corresponding positions on the fixing lug 14 and the support arm, and locked with a nut. Further, referring to Figure 2 , when the second object 2 is docked at the second position, it is fixed to the bracket 6 by a fastener 17 located at the rear end position in the second direction. The fastener 17 located at the rear end position in the second direction can cooperate with the fixed pin 13 located at the front end position in the second direction to fixedly install the second air duct 19 on the bracket 6 from front to back, improving the installation stability of the second air duct 19.

[0060] Further, referring to Figure 1 and Figure 4 , the second object 2 is located above the first object 1, and the second docking portion 11 is adapted to define the deformation degree of the elastic seal 5 caused by the extrusion of the first opening 3 and the second opening 4 through the limit cooperation with the second object 2. Specifically, the degree of deformation of the elastic seal 5 after being extruded is determined by the distance between the first opening 3 and the second opening 4. When the distance between the first opening 3 and the second opening 4 is small, the elastic seal 5 will be extruded to a greater extent, with a greater degree of deformation and better sealing effect, but material fatigue is likely to occur; when the distance between the first opening 3 and the second opening 4 is large, the elastic seal 5 will be extruded to a smaller extent, with a smaller degree of deformation and poorer sealing effect, but material fatigue is not likely to occur. A suitable distance between the first opening 3 and the second opening 4 can ensure the sealing effect and service life of the elastic seal 5. By setting the position of the fixing lug 14 on the second object 2 and the position of the second docking portion 11 on the support arm, the interval between the first opening 3 and the second opening 4 can be limited when the second object 2 is docked at the second position, thereby ensuring the use effect of the elastic seal 5.

[0061] The flip - seal structure involved in this embodiment is used to make the first openings 3 and the second openings 4 facing each other in the first direction of the first object 1 and the second object 2 dock with each other. Through this flip - seal structure, when the installation directions of the first object 1 and the second object 2 have an angle with the first direction, for example, the installation direction is perpendicular to the first direction, that is, installed along the second direction, before the installation is in place, the first opening 3 and the second opening 4 will not contact each other. When this flip - seal structure is applied to the air duct structure in the converter mentioned in the background technology, the seal strips on the two air ducts to be connected will not rub against each other, which can avoid wear of the seal strips and improve the sealing performance.

[0062] Among them, the first object 1 is allowed to move along a second direction, and at the same time, the second object 2 is allowed to rotate around a first axis, the extending direction of the first axis being a third direction. Therefore, the second object 2 can be switched between a first position and a second position around the first axis. Among them, when the second object 2 swings towards a direction away from the first object 1 to the first position, a gap can be formed between the first opening 3 and the second opening 4 in a first direction, and this gap enables the elastic seal 5 between them not to be damaged by friction when the first object 1 moves along the second direction; after the first object 1 is installed in place, the second object 2 can swing from the first position towards a direction close to the first object 1 around the first axis to the second position, and the second opening 4 synchronously approaches the first opening 3 and cooperates with the first opening 3 to apply pressure to the elastic seal 5, so as to form a seal between them by pressing against the elastic seal 5 while the first opening 3 and the second opening 4 are butted against each other. Among them, the second object 2 can dock at both the first position and the second position to facilitate the movement of the first object 1 along the second direction.

[0063] In addition, the above-mentioned second object 2 is rotatably mounted on the bracket 6. In order to improve the stability of the second object 2 during rotation, the bracket 6 includes a first arm 7 and a second arm 8. The second object 2 is located between the first arm 7 and the second arm 8 in the third direction. Through the mutual cooperation of the first arm 7 and the second arm 8, the second object 2 is kept stable during rotation. However, since the rotational connection between the second object 2 and the bracket 6 needs to be realized through the rotating shaft 20 structure, during the up-and-down flipping process of the second object 2, the position of the second object 2 in the third direction will shift. For example, the second object 2 may be closer to the first arm 7 as a whole. This situation will obviously cause a deviation after the second opening 4 and the first opening 3 are docked with each other in the first direction, and further lead to a deterioration of the sealing effect between the first opening 3 and the second opening 4. In response to this, in this technical solution, limiting protrusions 9 protruding towards the second object 2 are provided on the first arm 7 and the second arm 8. The limiting protrusions 9 are more protruding than the side surfaces of the first arm 7 and the second arm 8 facing the second object 2. This enables the limiting protrusions 9 to abut against the side wall 16 of the second object 2 facing it in the third direction, thereby defining the position of the second object 2 relative to the bracket 6 in the third direction. As long as this position is determined, it can be ensured that after the second object 2 is flipped to the second position, the first opening 3 and the second opening 4 are docked with each other and a good seal is formed by pressing the elastic seal 5. Among them, the limiting protrusions 9 are in point contact or line contact. Compared with the surface contact method of clamping and abutting the second object 2 by the first arm 7 and the second arm 8 as a whole, the contact area between the first arm 7 and the second arm 8 and the second object 2 can be greatly reduced, thereby reducing the frictional force generated by the bracket 6 on the second object 2 and preventing the bracket 6 from hindering the normal flipping of the second object 2. At the same time, the limiting protrusions 9 can accurately define a definite space in the third direction and limit the second object 2 to move within this space by abutting against the second object 2.

[0064] In addition, this embodiment also relates to an inverter, which includes a power module composed of a switch module and a capacitor module, and the power module uses the air duct assembly as described above for heat dissipation. Since the sealing effect after the docking of the air duct assembly is improved, the inverter has a better heat dissipation effect.

[0065] The above description of the specification and the embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the inspiration of the present invention or the above embodiments, those of ordinary skill in the art, combined with common general knowledge, ordinary technical knowledge in the art and / or existing technologies, through logical analysis, reasoning or limited experiments, can obtain modifications, equivalent replacements or other improvements to the embodiments of the present invention or some of its technical features, which should all be included in the protection scope of the present invention.

Claims

1. A flip seal structure, used for making a first opening (3) and a second opening (4) of a first object (1) and a second object (2) facing each other in a first direction butt against each other, wherein at least one of the first opening (3) and the second opening (4) is provided with an elastic seal (5), characterized in that: include: The first object (1) is suitable for moving along a second direction perpendicular to the first direction; The second object (2) is mounted on the bracket (6) by rotating around a first axis in a third direction perpendicular to the first direction and the second direction; before the first object (1) is mounted in place, the second object (2) is rotated and parked at a first position so that the first opening (3) and the second opening (4) are spaced apart in the first direction; after the first object (1) is mounted in place, the second object (2) is rotated and parked at a second position so that the first opening (3) and the second opening (4) are butted against each other and pressed against the elastic sealing member (5) to form a seal; The support (6) comprises a first support arm (7) and a second support arm (8) arranged along a third direction, and the second object (2) is located between the first support arm (7) and the second support arm (8); the first support arm (7) and the second support arm (8) are provided with a limiting protrusion (9) protruding toward the second object (2), and the limiting protrusion (9) abuts against the second object (2) along the third direction to limit the position of the second object (2) relative to the support (6) in the third direction.

2. A flip seal structure as claimed in claim 1, characterized in that: The limiting protrusions (9) on the first supporting arm (7) and the second supporting arm (8) are arranged in pairs along the third direction.

3. A flip seal structure as claimed in claim 2, characterized in that: The first support arm (7) and the second support arm (8) extend along the second direction; the position of the first axis on the bracket (6) corresponds to the rear end position of the second object (2) in the second direction, and the position of at least one pair of limiting protrusions (9) on the bracket (6) corresponds to the front end position of the second object (2) in the second direction away from the first axis.

4. A flip seal structure as claimed in claim 3, characterized in that: The position of at least one pair of the limiting protrusions (9) on the bracket (6) corresponds to the rear end position of the second object (2) in the second direction.

5. A flip seal structure according to any one of claims 1 to 4, characterized in that: The bracket (6) is provided with a first docking portion (10) and a second docking portion (11) corresponding to the first position and the second position of the second object (2), respectively; the first docking portion (10) and the second docking portion (11) are provided with a fixing socket (12); the second object (2) is inserted into the fixing socket (12) along a third direction through a fixing pin (13) to form a limit fit; the fixing pin (13) is suitable for withdrawing from the fixing socket (12) so that the second object (2) can be switched between the first position and the second position.

6. A flip seal structure as claimed in claim 5, characterized in that: The second object (2) is provided with a fixing lug (14) at its front end in the second direction for cooperating with the fixing pin (13), and the fixing lug (14) is provided with a pin hole (15) which penetrates along the third direction and is suitable for the fixing pin (13) to pass through.

7. A flip seal structure as claimed in claim 6, characterized in that When the second object (2) is parked at the second position, it is fixed to the bracket (6) via a fastener (17) located at the rear end position in the second direction.

8. A flip seal structure as claimed in claim 7, characterized in that: The second object (2) is located above the first object (1), and the second stop portion (11) is suitable for limiting the degree of deformation of the elastic sealing member (5) caused by the squeezing of the first opening (3) and the second opening (4) through the limiting cooperation with the second object (2).

9. A wind tube assembly, comprising a first wind tube (18) and a second wind tube (19), characterized in that: The first wind tube (18) and the second wind tube (19) adopt the flip sealing structure as described in any one of claims 1 to 8, so that the first opening (3) and the second opening (4) facing each other on the first wind tube (18) and the second wind tube (19) are connected to each other and sealed, the first wind tube (18) is the first object (1), and the second wind tube (19) is the second object (2).

10. A converter, comprising a power module composed of a switch module and a capacitor module, characterized in that: The power module uses the wind tube assembly as described in claim 9 to dissipate heat.

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