Butt joint sealing structure, air duct assembly and converter

Abstract

The invention discloses a butt joint sealing structure, an air duct assembly and a converter, the butt joint sealing structure is used for enabling a first object and a second object to be in butt joint with a first opening and a second opening which are opposite in the first direction, at least one of the first opening and the second opening is provided with an elastic sealing piece, and the first object is provided with a supporting part; the supporting part extends in the second direction perpendicular to the first direction and is concavely provided with a stopping groove. The second object is provided with an abutting part; the abutting part is suitable for abutting against the supporting part in the first direction and sliding or rolling relative to the supporting part. When the second object moves along the second direction relative to the supporting part, the first opening and the second opening form an interval in the first direction; when the abutting part falls into the stopping groove, the first opening and the second opening of the first object and the second object are in butt joint with each other under the action of external force in the first direction and abut against the elastic sealing piece to form sealing. By the adoption of the butt joint sealing structure, the air ducts cannot rub each other during installation, the abrasion condition of the sealing rubber 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 relates to a butt joint sealing structure, a wind duct assembly and an inverter. Background Art

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

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background art, and provide a butt joint sealing structure, a wind duct assembly and an inverter. By adopting the butt joint sealing structure, the wind ducts will not rub against each other during installation, the wear of the sealing rubber strip 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 butt joint sealing structure is used to butt the first openings and the second openings facing each other in the first direction of a first object and a second object. At least one of the first opening and the second opening is provided with an elastic sealing member. The first object is provided with a support portion, the support portion extends in a second direction perpendicular to the first direction, and a docking groove is recessed therein; the second object is provided with an abutting portion; the abutting portion is adapted to abut against the support portion along the first direction and slide or roll relative to the support portion; when the second object moves relative to the support portion in the second direction, the first opening and the second opening form a gap in the first direction; when the abutting portion falls into the docking groove, the first openings and the second openings of the first object and the second object are butt-jointed under the action of an external force in the first direction and press the elastic sealing member to form a seal.

[0006] Technical solution two based on technical solution one: A plurality of the docking grooves are provided along the second direction, a plurality of the abutting portions are provided along the second direction, and the positions of each of the docking grooves and each of the abutting portions in the second direction correspond one by one.

[0007] Technical solution three based on technical solution two: The positions of each of the docking grooves are staggered in a third direction perpendicular to the first direction and the second direction, the positions of each of the abutting portions are staggered in the third direction, and the positions of each of the docking grooves and each of the abutting portions in the third direction correspond one by one.

[0008] Technical solution four based on technical solution one: At least two of the supporting portions are provided in a third direction perpendicular to the first direction and the second direction; a set of abutting members is provided on the second object corresponding to each of the supporting portions, and each set of the abutting members includes the abutting portions corresponding to the positions and quantities of the docking grooves on the supporting portion.

[0009] Technical solution five based on technical solution one: A plurality of rollers are provided on the second object; the rollers rotate around an axis extending in a third direction perpendicular to the first direction and the second direction, and form the abutting portions.

[0010] Technical solution six based on technical solution one: The supporting surface of the supporting portion facing the second object and used for abutting against the abutting portion is higher than the first opening in the first direction, and the docking groove is provided on the supporting surface.

[0011] Technical solution seven based on technical solution one: The first object is provided with a guiding groove facing the second object when the second object moves, the groove wall of the guiding groove is provided with an inclined guiding surface, and when the second object moves, it is adapted to be guided by the guiding surface to move along the second direction.

[0012] Technical solution eight based on technical solution one: The second object is located above the first object, and the second object is provided with a receiving portion, and the receiving portion abuts against the supporting portion when the abutting portion falls into the docking groove under the action of gravity, so as to define the deformation degree generated by the elastic seal being squeezed.

[0013] Technical solution nine based on technical solution one: The first object is provided with a limiting baffle for restricting the second object from continuing to move along the second direction, and the limiting baffle is provided with a first limiting portion; a second limiting portion is provided on one side of the second object facing the limiting baffle; the first limiting portion and the second limiting portion are configured to be adapted to form a plug-in fit along the second direction while the abutting portion falls into the docking groove, so as to limit the positions of the second object relative to the first object in the first direction and the second direction.

[0014] Technical solution ten based on technical solution nine: The first limiting portion is a hole penetrating along the second direction, and the edge on the side away from the supporting portion in the first direction is the upper hole edge, and the upper hole edge is configured as an arc-shaped convex towards the inner side of the limiting hole; the second limiting portion is a convex protruding along the second direction, and it is provided with a guiding surface inclined relative to the first direction; the guiding surface and the upper hole edge are configured to form a guiding cooperation before the abutting portion falls into the docking groove, so as to guide the second limiting portion to be inserted into the first limiting portion along the second direction; the first limiting portion is provided with a first abutting portion protruding along the second direction at the position of its upper hole edge; the second limiting portion is provided with a second abutting portion, and the guiding surface is formed by starting from the second abutting portion and extending obliquely; the first abutting portion and the second abutting portion are configured to be abutted against each other along the first direction after the first limiting portion and the second limiting portion are inserted and matched.

[0015] In addition, the present invention also provides technical solution eleven: A hair dryer assembly, which includes a first hair dryer and a second hair dryer. The first hair dryer and the second hair dryer adopt the docking and 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 docked and sealed and communicated with each other. The first hair dryer is the first object, and the second hair dryer is the second object.

[0016] In addition, the present invention also provides technical solution twelve: A converter, which includes a power module composed of a switching module and a capacitor module, and the power module uses the hair dryer assembly described in technical solution eleven for heat dissipation.

[0017] 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:

[0018] Technical solution one provides a docking and sealing structure, which is used to dock the first opening and the second opening facing each other on the first object and the second object in the first direction. Through this docking and 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 docking and sealing structure is applied to the hair dryer structure in the converter mentioned in the background art, the sealing rubber strips on the two hair dryers to be connected will not rub against each other, which can avoid the wear of the sealing rubber strips and improve the sealing performance.

[0019] Among them, the docking and sealing structure is provided with a support portion on the first object, and a docking groove is provided on the support portion; at the same time, an abutting portion is provided on the second object, and the second object can slide or roll relative to the first object along the second direction in which the support portion extends by abutting the abutting portion against the support portion; since before the first opening and the second opening are docked, through the cooperation of the abutting portion and the support portion between the two, when the second object moves relative to the first object, a certain distance interval can be formed between the first opening and the second opening. At this time, even if an elastic seal is provided between the first opening and the second opening, the friction on the elastic seal can be reduced, or it can be completely non-contact with the elastic seal, thereby reducing the wear on the elastic seal; then after the positions of the first object and the second object are in place, the abutting portion will fall into the docking groove, and the docking groove plays a role in accommodating the abutting portion at this time. The second object will approach the first object in the first direction relative to the first object, so that the first opening and the second opening are docked with each other, and the elastic seal is pressed, causing the elastic seal to deform, thereby forming a seal; in this process, the power for the abutting portion to fall into the docking groove can come from the outside. For example, when the first object and the second object are arranged in the vertical direction, the cooperation between the two can be automatically realized by gravity.

[0020] In Technical Solution 2, a plurality of docking grooves are arranged along the second direction on the support portion, and correspondingly, a plurality of abutting portions are also arranged. In this way, through the cooperation between the support portion and the abutting portion, a supporting and supported relationship can be formed between multiple positions of the first object and the second object in the second direction. When the second object moves relative to the first object, some of the abutting portions of the second object and the support portion will first form a support, and then as the installation of the second object and the first object continues, other parts of the abutting portion and the support portion will continue to form a support. In this way, the movement of the second object relative to the first object can be more stable, avoiding tipping over during the relative movement of the two.

[0021] In Technical Solution 3, since there are multiple docking slots and abutting parts, and there is a one-to-one correspondence between the docking slots and the abutting parts, that is, when the first object and the second object are installed in place, each docking slot has a fixed abutting part that forms a fit with it. However, since the second object needs to move relative to the first object in the second direction, the abutting part that first enters the installation space can only find the corresponding docking slot at the extreme end position. At this time, if this abutting part forms a fit with the previous docking slot, it will cause an unbalanced contact between the second object and the first object. At the same time, due to the fit relationship between the abutting part and the docking slot, it will also make it difficult for the second object to continue to move relative to the first object in the second direction. Therefore, in this technical solution, the docking slots are staggered in the third direction, and the abutting parts are also staggered accordingly, so that on the movement trajectory of each abutting part, only the docking slot corresponding to it exists. Each abutting part will only form a fit with the corresponding docking slot when it moves to the position of the corresponding docking slot, thus solving the above problems.

[0022] In Technical Solution 4, at least two supporting parts are provided in the third direction, and corresponding abutting components are provided for each supporting part, so that when the second object is supported by the supporting part of the first object, it can also maintain balance in the third direction.

[0023] In Technical Solution 5, rollers are provided on the second object, and the rollers form the abutting parts. The setting of the rollers can greatly reduce the friction force when the second object and the first object move relative to each other, making it more convenient for the assembly and docking of the two.

[0024] In Technical Solution 6, a supporting surface higher than the first opening is provided on the supporting part, and the supporting surface forms an abutting fit with the abutting part, which can ensure that when the abutting part on the second object abuts against the supporting part, a gap can be formed between the second opening and the first opening, thereby preventing the elastic seal from being damaged due to friction.

[0025] In Technical Solution 7, a guiding groove is provided on the first object, and the guiding surface inclined on the guiding groove can ensure that the second object moves in the second direction during the movement of the second object, so as to ensure the correct docking position between the second object and the first object, and further ensure the docking between the first opening and the second opening and form an effective seal.

[0026] In Technical Solution 8, a receiving part is provided on the second object, and the receiving part can abut against the supporting part, limiting the distance between the second opening and the first opening when the abutting part falls into the docking slot, so as to prevent all the gravity borne by the second object from 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.

[0027] In Technical Solution Nine, a limit baffle is provided to prevent the second object from continuing to move in the second direction, enabling the second object to form a definite positional mating relationship with the first object in the second direction. Meanwhile, a first limit portion and a second limit portion are respectively provided. When the abutting portion on the second object falls into the docking groove, a limit mating is formed between the first limit portion and the second limit portion, thereby limiting the position of the second object relative to the first object in the first direction and the second direction, ensuring that at the position of the limit baffle, the second object can exert a sufficiently large pressure on the elastic seal, and thus ensuring the sealing effect between the first object and the second object.

[0028] In Technical Solution Ten, the first limit portion is a hole and is provided with an arc-shaped upper hole edge. Meanwhile, the second limit portion is a protrusion and is provided with an inclined guiding surface, which can cooperate with the upper hole edge to guide the second limit portion into the first limit portion during the movement of the second object in the second direction. Among them, before the abutting portion falls into the docking groove, the second object as a whole is located at a position relatively far from the first object in the first direction. However, after the abutting portion falls into the docking groove, the second object as a whole will approach the first object, and at this time, the position of the second object in the second direction is also basically fixed. Therefore, when these two state changes occur, a mutually guiding relationship should be able to be formed in advance between the first limit portion and the second limit portion, so that when the abutting portion falls into the docking groove, the second limit portion can be inserted into the first limit portion to avoid interference between the first object and the second object. The first limit portion is provided with a first abutting portion, and the second limit portion is provided with a second abutting portion, which can increase the contact area when the first object and the second object form a limit mating through the first limit portion and the second limit portion in the second direction, and improve the overall limit strength.

[0029] Technical Solution Eleven provides an air duct assembly, which includes a first air duct and a second air duct. The first air duct and the second air duct are assembled using the above-mentioned butt joint sealing structure. By adopting the above-mentioned butt joint sealing structure, when the first air duct and the second air duct 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 butt joint of the first air duct and the second air duct.

[0030] Technical Solution Twelve provides a converter, which uses the above-mentioned air duct assembly for heat dissipation. Since the sealing effect after the butt joint of the air duct assembly is improved, the converter has a better heat dissipation effect. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0032] Figure 1 It is a structural schematic diagram of a wind tube assembly involved in an embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the explosion structure of the wind tube assembly involved in the embodiment of the present invention;

[0034] Figure 3 for Figure 1 A schematic diagram of the second wind tube in the figure viewed from above;

[0035] Figure 4 It is a structural schematic diagram of the wind tube assembly from another perspective involved in an embodiment of the present invention;

[0036] Figure 5 for Figure 2 A magnified schematic diagram of part A;

[0037] Figure 6 for Figure 2 A magnified schematic diagram of part B;

[0038] Figure 7 for Figure 2 A magnified schematic diagram of part C;

[0039] Figure 8 for Figure 4 Enlarged schematic diagram of part D in the figure.

[0040] Description of main reference numerals:

[0041] A first object 1; a second object 2; a first opening 3; a second opening 4; an elastic sealing member 5; a supporting portion 6; a resting groove 7; an abutting portion 8; a roller 9; a supporting surface 10; a guiding groove 11; a guiding surface 12; a receiving portion 13; a first air cylinder 14; a second air cylinder 15; a power module 16; a lug 17; a limiting baffle 18; a mounting seat 19; a first limiting portion 20; a first abutting portion 21; a second limiting portion 22; a second abutting portion 23; a guiding surface 24; and an upper hole edge 25. DETAILED DESCRIPTION

[0042] 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.

[0043] In the claims, the description and the above-mentioned 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.

[0044] In the claims, the description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "vertical", "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 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.

[0045] In the claims, the description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, when using the terms "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 formed, and being fixed connected through other devices or elements.

[0046] In the claims, the description and the above-mentioned drawings of the present invention, when using terms such as "comprising", "having" and their variants, are intended to mean "including but not limited to".

[0047] Embodiment

[0048] The embodiment of the present invention relates to a blower assembly, which can be used for the heat dissipation of an inverter. Specifically, the inverter includes a power module 16 composed of a switch module and a capacitor module, and the power module 16 can use the blower assembly involved in this embodiment for heat dissipation.

[0049] Refer to Figure 1, the air duct assembly mainly includes a first air duct 14 and a second air duct 15. Here, the air duct refers to a cylindrical member with openings at both ends and a hollow channel formed inside. After the first air duct 14 and the second air duct 15 are applied to the converter, they are arranged inside the cabinet of the converter. The air inlet and outlet of the air duct assembly are affected by the cabinet structure of the converter. For example, in this embodiment, the first air duct 14 is located below, the second air duct 15 is located above, the air inlet of the first air duct 14 faces the horizontal direction, the air outlet of the first air duct 14 points upward, the air inlet of the second air duct 15 points downward, the air outlet of the second air duct 15 points upward, and the air outlet of the first air duct 14 and the air inlet of the second air duct 15 need to form a sealed butt connection and communication so that the first air duct 14 and the second air duct 15 can be connected into a complete air duct structure and dissipate heat from the power module 16 of the converter. Refer to Figure 1 , the power module 16 is arranged at the position of the second air duct 15. Specifically, heat dissipation fins can be arranged on the back of the power module 16, and these heat dissipation fins can extend into the air passage inside the second air duct 15.

[0050] Among them, refer to Figure 1 , the number of the first air ducts 14 in the air duct assembly is one, which has one air inlet and three air outlets. The number of the second air ducts 15 is three, which has one air inlet and one air outlet. The air inlet of each second air duct 15 is butted and communicated with one air outlet of the first air duct 14. The reason for such a setting is that the air duct assembly is applied to the converter, and the power module 16 of the converter needs to be connected to three-phase alternating current. Therefore, three groups of power modules 16 are required. Each group of power modules 16 is cooled by one second air duct 15. The structures of each second air duct 15 are the same, and the structures at the positions of each air outlet of the first air duct 14 are also the same. The structure at the position of one air outlet of one second air duct 15 and the first air duct 14 will be described below.

[0051] In the air duct assembly involved in this embodiment, a specially improved butt-sealing structure is adopted. This butt-sealing structure is used to butt 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 14, and the second object 2 is the second air duct 15; the air outlet of the first air duct 14 pointing upward is the first opening 3, and the air inlet of the second air duct 15 pointing downward is the second opening 4. The elastic seal 5 is arranged at the position of the first opening 3.

[0052] It should be noted that in this specification, claims and drawings, the first direction, the second direction and the third direction are marked. The first direction is the up-down direction, the second direction is the front-back direction, and the third direction is the left-right direction. In the description of this specification, the above two direction expressions will be used for description.

[0053] Referring to Figure 1 and Figure 2 , the first object 1 is provided with a support portion 6. The support portion 6 extends along the second direction perpendicular to the first direction and is recessed with a docking groove 7. The second object 2 is provided with an abutting portion 8. The abutting portion 8 is adapted to abut against the support portion 6 along the first direction and slide or roll relative to the support portion 6. When the second object 2 moves relative to the support portion 6 along the second direction, a gap is formed between the first opening 3 and the second opening 4 in the first direction. When the abutting portion 8 falls into the docking groove 7, the first opening 3 and the second opening 4 of the first object 1 and the second object 2 are butt-jointed under the action of an external force along the first direction and press against the elastic seal 5 to form a seal.

[0054] Among them, referring to Figure 1 and Figure 2 , the first opening 3 of the first object 1 faces upward and the first opening 3 is generally rectangular. Taking a single first opening 3 as an example, two strip-shaped metal profiles extending along the second direction are arranged on both sides of the first opening 3 in the third direction. The metal profiles form the support portion 6 of the first object 1 and the support portion 6 extends along the second direction. Referring to Figure 1 , Figure 2 and Figure 6 , the surface of the support portion 6 facing the second object 2 and used for abutting and cooperating with the abutting portion 8 of the second object 2 is the support surface 10, that is, the upward surface of the support portion 6 is the support surface 10. A docking groove 7 is recessed in the support surface 10. The specific setting of the docking groove 7 can be: a notch is provided on the metal profile, and a bending piece is fixed on the notch by bolts. The bending piece has a downwardly concave bending portion, and the bottom wall of the bending portion is lower than the support surface 10 in the up-down direction, so as to form a docking groove 7 that is recessed downward relative to the support surface 10. Among them, the support surface 10 is higher than the first opening 3 in the up-down direction. Here, the support surface 10 being higher than the first opening 3 means that the support surface 10 is higher than the edge of the first opening 3. The height of the bottom wall of the docking groove 7 can be higher than, lower than or flush with the first opening 3, which mainly depends on the protruding degree of the abutting portion 8.

[0055] Referring to Figure 1 and Figure 2 , the abutting portion 8 provided on the second object 2 can abut against the support portion 6 along the first direction and slide or roll relative to the support portion 6. Referring to Figure 5, in this embodiment, a roller 9 is provided on the second object 2. The roller 9 rotates about an axis extending in a third direction perpendicular to the first direction and the second direction, and forms the abutting portion 8. Specifically, a mounting seat 19 protruding from the side surface of the second object 2 in the second direction is installed on the second object 2 by bolts. The above-mentioned roller 9 is rotatably installed on the mounting seat 19. The edge of the roller 9 slightly protrudes from the lower surface of the second object 2 in the height direction, so that when the roller 9 abuts against the support portion 6 of the first object 1 as the abutting portion 8 and does not fall into the docking groove 7, the second opening 4 of the second object 2 and the first opening 3 can form a gap in the first direction. The protruding degree of the roller 9 matches the depression depth of the docking groove 7, so that when the roller 9 falls into the docking groove 7, there will not be a large gap between the first opening 3 and the second opening 4 due to too large a protruding degree. By providing the roller 9 on the second object 2 and forming the abutting portion 8 by the roller 9, the setting of the roller 9 can greatly reduce the friction force when the second object 2 and the first object 1 move relative to each other, making it more convenient for the assembly and docking of the two.

[0056] Among them, a receiving portion 13 is provided at the lower side position of the second object 2. The receiving portion 13 abuts against the support portion 6 when the abutting portion 8 falls into the docking groove 7 under the action of gravity, so as to define the deformation degree generated by the elastic seal 5 being squeezed. Specifically, referring to Figure 5 , the receiving portion 13 is a metal profile fixedly provided on the body of the second object 2 by bolts. The metal profile has a flange protruding outward in the third direction, and the flange forms the receiving portion 13. At the same time, referring to Figure 5, a notch is provided at the position of the receiving portion 13 corresponding to the roller 9 so that the roller 9 can protrude from the lower surface of the receiving portion 13. When the roller 9 falls into the docking groove 7, the lower surface of the receiving portion 13 will abut against the supporting surface 10 of the supporting portion 6. The positional relationship between the receiving portion 13 and the second opening 4 of the second object 2 is determined. At the same time, the positional relationship between the supporting portion 6 and the first opening 3 of the first object 1 is determined. Therefore, with the cooperation of the two, the positional relationship between the first opening 3 and the second opening 4 is also determined at this time. That is, the distance between the first opening 3 and the second opening 4 can be defined by the cooperation of the receiving portion 13 and the supporting portion 6. The degree of deformation of the elastic seal 5 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 squeezed to a greater extent, with a greater degree of deformation and a 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 squeezed to a smaller extent, with a smaller degree of deformation and a poorer sealing effect, but material fatigue is not likely to occur. An appropriate distance between the first opening 3 and the second opening 4 can ensure the sealing effect and service life of the elastic seal 5. A supporting surface 10 higher than the first opening 3 is provided on the supporting portion 6. The supporting surface 10 forms an abutting fit with the abutting portion 8, which can ensure that when the abutting portion 8 on the second object 2 abuts against the supporting portion 6, a gap can be formed between the second opening 4 and the first opening 3, thereby preventing the elastic seal 5 from being damaged due to friction.

[0057] In addition, referring to Figure 1 and Figure 2 , a plurality of docking grooves 7 are provided along the second direction, a plurality of abutting portions 8 are provided along the second direction, and the positions of each docking groove 7 and each abutting portion 8 in the second direction correspond one by one. The positions of each docking groove 7 are all staggered in the third direction perpendicular to the first direction and the second direction, the positions of each abutting portion 8 are all staggered in the third direction, and the positions of each docking groove 7 and each abutting portion 8 in the third direction correspond one by one.

[0058] The above docking and sealing structure is used to dock 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. Through this docking and sealing 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 being installed in place, the first opening 3 and the second opening 4 will not contact each other. When this docking and sealing structure is applied to the air duct structure in the converter mentioned in the background technology, the sealing rubber strips on the two air ducts to be connected will not rub against each other, which can avoid wear of the sealing rubber strips and improve the sealing performance.

[0059] Among them, the docking and sealing structure is provided with a supporting part 6 on the first object 1, and a docking groove 7 is provided on the supporting part 6; at the same time, an abutting part 8 is provided on the second object 2, and the second object 2 can slide or roll relative to the first object 1 along the second direction in which the supporting part 6 extends by abutting the abutting part 8 against the supporting part 6; since before the first opening 3 and the second opening 4 are docked, through the cooperation of the abutting part 8 and the supporting part 6 between the two, when the second object 2 moves relative to the first object 1, a certain distance interval can be formed between the first opening 3 and the second opening 4. At this time, even if an elastic seal 5 is provided between the first opening 3 and the second opening 4, the friction on the elastic seal 5 can be reduced, or it can be completely not in contact with the elastic seal 5, thereby reducing the wear of the elastic seal 5; then after the positions of the first object 1 and the second object 2 are in place, the abutting part 8 will fall into the docking groove 7, and the docking groove 7 plays a role of accommodating the abutting part 8 at this time. The second object 2 will approach the first object 1 in the first direction relative to the first object 1, so that the first opening 3 and the second opening 4 are docked with each other, and the elastic seal 5 is pressed, causing the elastic seal 5 to deform, thereby forming a seal; in this process, the power for the abutting part 8 to fall into the docking groove 7 can come from the outside. For example, when the first object 1 and the second object 2 are arranged in the vertical direction, the cooperation between the two can be automatically realized by gravity.

[0060] In this embodiment, at least two supporting parts 6 are provided in a third direction perpendicular to the first direction and the second direction; for each of the supporting parts 6, the second object 2 is provided with a set of abutting parts 8, and each set of the abutting parts 8 includes the abutting parts 8 corresponding to the position and quantity of the docking grooves 7 on the supporting part 6.

[0061] Specifically, first refer to Figure 1 and Figure 2 , two supporting parts 6 formed by metal profiles are provided at the position of each first opening 3. These two supporting parts 6 are arranged along the third direction and are located on both sides of the corresponding first opening 3. At the same time, the second object 2 is correspondingly provided with two receiving parts 13, and these two receiving parts 13 can respectively form an abutting cooperation with the two supporting parts 6. At the positions corresponding to the receiving parts 13 of the second object 2, two sets of abutting parts 8 are also provided. These two sets of abutting parts 8 are located on both sides of the second object 2 in the third direction and just correspond to the two supporting parts 6.

[0062] Meanwhile, on each supporting portion 6, a plurality of docking grooves 7 are provided along the second direction. In this embodiment, the number of docking grooves 7 on each supporting portion 6 is two, which are respectively arranged at the front side position and the rear side position of the supporting portion 6 in the second direction, and are adapted to the range of the first opening 3. Correspondingly, two rollers 9 are also provided on the second object 2 in the second direction, and the positions of these two rollers 9 correspond to the positions of the docking grooves 7 on the supporting portion 6 one by one. That is to say, each roller 9 can just fall into the corresponding docking groove 7 on the supporting portion 6. By arranging a plurality of docking grooves 7 on the supporting portion 6 along the second direction, a plurality of abutting portions 8 are correspondingly arranged. With such an arrangement, through the cooperation between the supporting portion 6 and the abutting portion 8, a supporting and supported relationship can be formed between the first object 1 and the second object 2 at a plurality of positions in the second direction. When the second object 2 moves relative to the first object 1, some abutting portions 8 and the supporting portion 6 of the second object 2 will first form a support, and then as the installation of the second object 2 and the first object 1 continues, the other abutting portions 8 and the supporting portion 6 will continue to form a support. With such an arrangement, the movement of the second object 2 relative to the first object 1 can be more stable, avoiding tipping over during the relative movement of the two.

[0063] Among them, the positions of the two docking grooves 7 on one supporting portion 6 are staggered in the third direction. For example, in this embodiment, the position of the docking groove 7 located at the front side is more outward in the third direction than the position of the docking groove 7 located at the rear side. Correspondingly, referring to Figure 3, two of the set of eight abutting portions 8 on the second object 2 are also offset from each other in the third direction to correspond to the positions of the docking grooves 7 on the support portion 6. Since there are multiple docking grooves 7 and abutting portions 8, and there is a one-to-one correspondence between the docking grooves 7 and the abutting portions 8, that is, when the first object 1 and the second object 2 are installed in place, each docking groove 7 has a fixed abutting portion 8 that cooperates with it. However, since the second object 2 needs to move relative to the first object 1 in the second direction, the abutting portion 8 that first enters the installation space can only find the corresponding docking groove 7 at the extreme end position. At this time, if this abutting portion 8 forms a fit with the previous docking groove 7, it will cause an unbalanced contact between the second object 2 and the first object 1. At the same time, due to the cooperation relationship between the abutting portion 8 and the docking groove 7, it will also make it difficult for the second object 2 to continue to move relative to the first object 1 in the second direction. Therefore, in this technical solution, the docking grooves 7 are offset from each other in the third direction, and the abutting portions 8 are also offset accordingly, so that on the movement trajectory of each abutting portion 8, only the corresponding docking groove 7 exists. Each abutting portion 8 will only form a fit with the corresponding docking groove 7 when it moves to the position of the corresponding docking groove 7, thus solving the above problems. The support portion 6 is provided with at least two in the third direction, and a set of abutting portions 8 corresponding to each support portion 6 is provided, so that when the second object 2 is supported by the support portion 6 of the first object 1, it can also maintain balance in the third direction.

[0064] In addition, referring to Figure 1 , Figure 2 and Figure 7 , the first object 1 is provided with a guiding groove 11 facing the second object 2 when the second object 2 moves. The groove wall of the guiding groove 11 is provided with an inclined guiding surface 12. When the second object 2 moves, it is adapted to be guided by the guiding surface 12 to move in the second direction. Among them, the first object 1 is provided with a limiting baffle 18 for restricting the second object 2 from continuing to move in the second direction.

[0065] Specifically, referring to Figure 7, at the rear position of the first object 1 extending upward along the second direction, a limit baffle 18 is provided. The limit baffle 18 is not only used to limit the second object 2 from continuing to move backward along the second direction, but also on the side surface of the limit baffle 18 facing the second object 2, two lugs 17 are arranged along the third direction. The space between these two lugs 17 forms the above-mentioned guiding groove 11. The distance between these two lugs 17 is consistent with the dimension of the second object 2 in the third direction. At the same time, on the groove walls of these two guiding grooves 11, inclined guiding surfaces 12 are provided. These two guiding surfaces 12 both extend outwardly and obliquely so that the guiding groove 11 is in an open shape. When the second object 2 moves from front to back along the second direction to the final position, the guiding surfaces 12 on the guiding groove 11 can guide the second object 2 into the guiding groove 11, thereby ensuring the correct docking position between the second object 2 and the first object 1, and further ensuring the docking and effective sealing between the first opening 3 and the second opening 4.

[0066] Meanwhile, referring to Figure 4 , Figure 7 and Figure 8 , a first limiting portion 20 is provided on the limit baffle 18; a second limiting portion 22 is provided on the side of the second object 2 facing the limit baffle 18; the first limiting portion 20 and the second limiting portion 22 are configured to be adapted to form a plug-in fit along the second direction while the abutting portion 8 falls into the docking groove 7, so as to limit the position of the second object 2 relative to the first object 1 in the first direction and the second direction.

[0067] Wherein, the first limiting portion 20 is a hole penetrating along the second direction, and the edge on the side far from the supporting portion 6 in the first direction is the upper hole edge 25. The upper hole edge 25 is configured to be an arc-shaped convex towards the inside of the limiting hole; the second limiting portion 22 is a protrusion protruding along the second direction, and it is provided with a guiding surface 24 inclined relative to the first direction; the guiding surface 24 and the upper hole edge 25 are configured to be adapted to form a guiding fit before the abutting portion 8 falls into the docking groove 7, so as to guide the second limiting portion 22 to be inserted into the first limiting portion 20 along the second direction.

[0068] In addition, the first limiting portion 20 is provided with a first abutting portion 21 protruding along the second direction at the position of its upper hole edge 25; the second limiting portion 22 is provided with a second abutting portion 23, and the guiding surface 24 is formed by starting from the second abutting portion 23 and extending obliquely; the first abutting portion 21 and the second abutting portion 23 are configured to be adapted to abut against each other along the first direction after the first limiting portion 20 and the second limiting portion 22 are in plug-in fit.

[0069] Specifically, first referring to Figure 7, a first limiting portion 20 is provided at the middle position of the limiting baffle 18. In this embodiment, the limiting portion is a hole penetrating along the second direction, and specifically, it can be set as a rectangular hole. Taking the first direction as the up-and-down direction as an example, the upper hole edge 25 of the first limiting portion 20 is designed to be arc-shaped. The arc of the arc shape means that on the projection plane perpendicular to the third direction, the projection shape of the outer contour of the upper hole edge 25 is a curved arc protruding downward, and its preferably central angle is 90°. Its starting point is the intersection of the diameter along the second direction and the corresponding side of the circle, and its ending point is the intersection of the diameter along the first direction and the corresponding side. At the same time, referring to Figure 8 , on the other side of the first limiting portion 20 relative to the limiting baffle 18 away from the first opening 3, a first abutting portion 21 protruding along the second direction is further provided. The first abutting portion 21 can be formed by bending the remaining profile part backward while punching the hole of the first limiting portion 20 when forming the first limiting portion 20.

[0070] Referring to Figure 8 , a second limiting portion 22 is provided on the second object 2. The second limiting portion 22 is a convex structure with a shape and size adapted to the first limiting portion 20. The size of the convex mechanism in the third direction is adapted to the size of the hole of the first limiting portion 20 in the third direction. At the same time, the positions of the second limiting portion 22 on the second object 2 in the first direction and the second direction correspond to the positions of the first limiting portion 20 on the first object 1 in the first direction and the second direction. This correspondence means that when the abutting portion 8 on the second object 2 falls into the docking groove 7, the first limiting portion 20 and the second limiting portion 22 correspond to each other in the first direction and the second direction, so that the first limiting portion 20 can form a plug-in fit with the second limiting portion 22. This plug-in fit can not only limit the position of the second object 2 relative to the first object 1 in the first direction, but also limit the relative position of the two in the second direction.

[0071] Among them, an inclined guiding surface 24 is provided on the second limiting portion 22. The inclined direction of the guiding surface 24 can be regarded as inclined from top to bottom and from front to back. Here, the position where the second object 2 is located is regarded as the upper, the position where the first object 1 is located is regarded as the lower, the side away from the limiting baffle 18 is regarded as the front, and the side close to the limiting baffle 18 is regarded as the back. In the part before the guiding surface 24, the second limiting portion 22 is provided with a second abutting portion 23. The upward surface of the second abutting portion 23 extends along the second direction and the third direction, and at the same time, the downward surface of the first abutting portion 21 extends along the second direction and the third direction. When the first limiting portion 20 and the second limiting portion 22 are in plug-in fit, the first abutting portion 21 and the second abutting portion 23 can abut against each other in the first direction.

[0072] By providing the first limiting portion 20 and the second limiting portion 22, it can be ensured that at the position of the limiting baffle 18, the second object 2 can exert a sufficient large pressure on the elastic seal 5, thereby ensuring the sealing effect between the first object 1 and the second object 2. At the same time, since before the abutting portion 8 falls into the docking groove 7, the second object 2 is generally located at a position relatively far from the first object 1 along the first direction, but after the abutting portion 8 falls into the docking groove 7, the second object 2 will generally approach the first object 1, and at this time, the position of the second object 2 in the second direction is also basically fixed; therefore, when these two state changes occur, a mutually guiding relationship should be able to be formed in advance between the first limiting portion 20 and the second limiting portion 22, so that when the abutting portion 8 falls into the docking groove 7, the second limiting portion 22 can be inserted into the first limiting portion 20 to avoid interference between the first object 1 and the second object 2. In addition, by providing the first abutting portion 21 and the second abutting portion 23, the contact area when the first object 1 and the second object 2 form a limiting fit in the second direction through the first limiting portion 20 and the second limiting portion 22 can be increased, and the overall limiting strength can be improved.

[0073] In addition, this embodiment also relates to an inverter, which includes a power module 16 composed of a switch module and a capacitor module, and the power module 16 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.

[0074] The above description of the specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation to 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, combining 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 docking and sealing structure is used to dock 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). At least one of the first opening (3) and the second opening (4) is provided with an elastic seal (5). It is characterized in that the first object (1) is provided with a support portion (6), the support portion (6) extends in a second direction perpendicular to the first direction, and is recessed with a docking groove (7); the second object (2) is provided with an abutting portion (8); the abutting portion (8) is adapted to abut against the support portion (6) in the first direction and slide or roll relative to the support portion (6); when the second object (2) moves relative to the support portion (6) in the second direction, the first opening (3) and the second opening (4) form a gap in the first direction; when the abutting portion (8) falls into the docking groove (7), the first openings (3) and the second openings (4) of the first object (1) and the second object (2) are docked with each other under the action of an external force in the first direction and press the elastic seal (5) to form a seal.

2. The docking and sealing structure according to claim 1, characterized in that, A plurality of the docking grooves (7) are provided in the second direction, a plurality of the abutting portions (8) are provided in the second direction, and the positions of each of the docking grooves (7) and each of the abutting portions (8) in the second direction correspond one by one.

3. The docking and sealing structure according to claim 2, characterized in that, The positions of each of the docking grooves (7) are staggered in a third direction perpendicular to the first direction and the second direction, the positions of each of the abutting portions (8) are staggered in the third direction, and the positions of each of the docking grooves (7) and each of the abutting portions (8) in the third direction correspond one by one.

4. The docking and sealing structure according to claim 1, characterized in that, At least two support portions (6) are provided in a third direction perpendicular to the first direction and the second direction; the second object (2) is provided with a set of abutting portions (8) corresponding to each of the support portions (6), and each set of the abutting portions (8) includes the abutting portions (8) corresponding to the positions and quantities of the docking grooves (7) on the support portion (6).

5. The docking and sealing structure according to claim 1, characterized in that, The second object (2) is provided with a plurality of rollers (9); the rollers (9) rotate around an axis extending in a third direction perpendicular to the first direction and the second direction, and form the abutting portion (8).

6. The docking and sealing structure according to claim 1, characterized in that, The support surface (10) of the support portion (6) facing the second object (2) and used for abutting against the abutting portion (8) is higher than the first opening (3) in the first direction, and the docking groove (7) is provided on the support surface (10).

7. A docking and sealing structure according to claim 1, characterized in that, The first object (1) is provided with a guiding groove (11) facing the second object (2) when the second object (2) moves. The groove wall of the guiding groove (11) is provided with an inclined guiding surface (12). When the second object (2) moves, it is adapted to be guided by the guiding surface (12) to move in the second direction.

8. The docking and sealing structure according to claim 1, characterized in that, The second object (2) is located above the first object (1), and the second object (2) is provided with a receiving portion (13). When the abutting portion (8) falls into the docking groove (7) under the action of gravity, the receiving portion (13) abuts against the support portion (6) to define the degree of deformation generated by the extrusion of the elastic seal (5).

9. The docking and sealing structure according to claim 1, characterized in that, The first object (1) is provided with a limit baffle (18) for restricting the second object (2) from continuing to move in the second direction, and a first limit portion (20) is provided on the limit baffle (18); a second limit portion (22) is provided on a side of the second object (2) facing the limit baffle (18); the first limit portion (20) and the second limit portion (22) are configured to form a plug-in fit along the second direction while the abutting portion (8) falls into the docking groove (7), so as to define the positions of the second object (2) relative to the first object (1) in the first direction and the second direction.

10. A docking and sealing structure as described in claim 9, characterized in that, The first limit portion (20) is a hole penetrating along the second direction, and a side edge of the hole away from the support portion (6) in the first direction is an upper hole edge (25), and the upper hole edge (25) is configured as an arc-shaped convex towards the inside of the limit hole; the second limit portion (22) is a protrusion protruding along the second direction, and it is provided with a guiding surface (24) inclined relative to the first direction; the guiding surface (24) and the upper hole edge (25) are configured to form a guiding fit before the abutting portion (8) falls into the docking groove (7), so as to guide the second limit portion (22) to be inserted into the first limit portion (20) along the second direction; the first limit portion (20) is provided with a first abutting portion (21) protruding along the second direction at the position of its upper hole edge (25); the second limit portion (22) is provided with a second abutting portion (23), and the guiding surface (24) is formed by starting from the second abutting portion (23) and extending obliquely; the first abutting portion (21) and the second abutting portion (23) are configured to abut against each other along the first direction after the first limit portion (20) and the second limit portion (22) are in plug-in fit.

11. A hair dryer assembly, which includes a first hair dryer (14) and a second hair dryer (15), and is characterized in that, The first air duct (14) and the second air duct (15) adopt the butt-joint sealing structure as described in any one of claims 1-10, so that the opposite first opening (3) and second opening (4) on the first air duct (14) and the second air duct (15) are butt-jointed and sealed and communicated, the first air duct (14) is the first object (1), and the second air duct (15) is the second object (2).

12. A current converter, comprising a power module (16) formed by combining a switching module and a capacitor module, characterized in that The power module (16) uses the air duct assembly as described in claim 11 for heat dissipation.

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