CN218976581U - Inverter housing structure and inverter - Google Patents

Abstract

The utility model provides an inverter shell structure and an inverter, which belong to the technical field of electric equipment, and comprise a shell with an opening formed at the front side and a cover plate covering the opening; the edge ring of the opening is provided with a first flanging which extends outwards, the front side surface of the first flanging forms a sealing contact surface vertical to the front-back direction, the edges of at least two opposite first flanging are also provided with a second flanging which extends outwards, and the shell, the first flanging and the second flanging are integrally bent and formed; the rear side of apron and sealed contact surface sealing butt, the first mounting hole that link up around having seted up to the second turn-ups, the apron corresponds to be equipped with the second mounting hole that link up around, first mounting hole and second mounting hole pass through fastener fixed connection. The inverter shell structure and the inverter provided by the utility model can enable the shell, the first flanging and the second flanging to be integrally bent and formed, so that the processing cost is reduced; the fastener is not subjected to lateral shearing force, and deformation and fracture of the fastener caused by lateral shearing are avoided.

Description

Inverter housing structure and inverter

Technical Field

The utility model belongs to the technical field of electric power equipment, and particularly relates to an inverter shell structure and an inverter.

Background

The inverter is a converter for converting direct current energy into alternating current with fixed frequency and fixed voltage or frequency and voltage, and is widely applied to the fields of life, office work, industrial production and the like. Some small inverters are often mounted in an outdoor environment by wall-mounting.

Referring to fig. 1, the shell structure of the existing inverter can refer to fig. 1, the electrical elements of the existing inverter are mainly installed in an inverter shell 1', an opening of the inverter shell 1' is covered with an inverter cover plate 2', the existing inverter shell 1' tends to form an inward-contracted step structure 3' at the opening in consideration of waterproof sealing performance, the step structure 3' is difficult to process, the inverter shell 1' and the step structure 3' are generally required to be molded respectively, and finally, the inverter shell and the step structure 3' are welded and assembled, so that the processing cost is high; meanwhile, the existing inverter housing 1 'and the inverter cover plate 2' adopt a side locking screw mounting mode, the inverter cover plate 2 'and the inverter housing 1' are mutually abutted in the front-rear direction to ensure tightness, the locking direction of the screw is perpendicular to the abutting direction of the inverter cover plate 2 'and the inverter housing 1', the screw is always subjected to lateral shearing acting force, the screw is easy to deform and break, and finally the problem of connection failure is caused.

Disclosure of Invention

The embodiment of the utility model provides an inverter shell structure and an inverter, and aims to solve the problems that the processing cost of an inverter shell is high and connection failure is easy to occur in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in a first aspect, there is provided an inverter housing structure comprising:

a shell with an opening formed at the front side and a cover plate covering the opening;

the edge ring of the opening is provided with a first flanging which extends outwards, the front side surface of the first flanging forms a sealing contact surface vertical to the front-back direction, and the edges of at least two opposite first flanging are also provided with a second flanging which extends outwards;

the rear side of apron with sealed contact surface seals the butt, the first mounting hole that link up around having been seted up to the second turn-ups, the apron corresponds to be equipped with the second mounting hole that link up around, first mounting hole with second mounting hole passes through fastener fixed connection.

With reference to the first aspect, in a possible implementation manner, the first flange includes a first plate body and a second plate body, and the first plate body is connected with an edge of the opening and extends outwards; the second plate body is arranged at the outer side edge of the first plate body and extends backwards; the second flanging is connected to the rear side edge corresponding to the second plate body and extends outwards.

With reference to the first aspect, in one possible implementation manner, the fastener includes a fixing sleeve and a fixing bolt; the fixed sleeve is inserted into the second mounting hole, a limiting piece is arranged at the front end of the fixed sleeve, and the limiting piece is attached to the front side face of the cover plate for limiting; the fixing bolt penetrates through the first mounting hole and stretches into the fixing sleeve to be fixedly connected with the fixing sleeve.

In some embodiments, the front side surface of the cover plate forms a containing groove, and the limiting piece is disposed in the containing groove.

In some embodiments, the limiting piece is fixedly connected with the cover plate, and the rear end of the fixing sleeve is abutted with the front side face of the second flanging.

With reference to the first aspect, in one possible implementation manner, an edge of the cover plate is provided with a third flange extending backward, and the third flange is located outside the first flange and the second flange.

With reference to the first aspect, in one possible implementation manner, an edge of the second flange is formed with a clearance bevel adapted to a corner of the third flange.

With reference to the first aspect, in one possible implementation manner, a sealing rubber strip is disposed on a rear side surface of the cover plate, and the rear side surface of the sealing rubber strip is in sealing abutment with the sealing contact surface.

With reference to the first aspect, in a possible implementation manner, a front side surface of the sealing rubber strip is a plane, and a rear side surface is an arc surface.

Compared with the prior art, the scheme disclosed by the embodiment of the application adopts the arrangement mode of the outward flange, a sealing contact surface is formed outside the opening of the shell, and the corresponding first flange also forms the second flange in the outward flange mode, so that the shell, the first flange and the second flange can be formed in an integral bending forming mode on the premise of meeting the requirement of abutting and sealing the cover plate and the assembly and fixation requirement of the cover plate, the processing difficulty is effectively reduced, and the processing cost is reduced; simultaneously, owing to adopt the mode installation fastener that link up from front to back, support tightly in the front direction between shell and the apron, the fastener directly provides to support tight effort after the equipment, and the fastener can not receive the side direction shearing force, avoids leading to the cracked problem of fastener deformation because of side direction shearing.

In a second aspect, an embodiment of the present utility model further provides an inverter, including the above inverter housing structure.

Compared with the prior art, the scheme that this application embodiment shows through adopting foretell inverter housing structure, has reduced the holistic processing cost of dc-to-ac converter, can also effectively solve the shell and cover connection region and connect the problem of inefficacy easily, and then reduces the later maintenance cost of dc-to-ac converter.

Drawings

Fig. 1 is a schematic structural view of a housing of a conventional inverter;

fig. 2 is a schematic front view of an inverter housing structure according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view B-B of FIG. 2;

FIG. 5 is a cross-sectional view of C-C of FIG. 2;

fig. 6 is an exploded view of an inverter housing structure according to an embodiment of the present utility model;

fig. 7 is an enlarged view of a portion D of fig. 6;

fig. 8 is an exploded view of a second embodiment of an inverter housing structure according to the present utility model.

Reference numerals illustrate:

1', an inverter housing; 2', an inversion cover plate; 3', a step structure;

1. a housing; 1a, opening;

2. a cover plate; 2a, a second mounting hole; 2b, a containing groove;

3. a first flanging; 3a, sealing the contact surface; 310. a first plate body; 320. a second plate body;

4. a second flanging; 4a, a first mounting hole; 4b, a avoidance slope;

5. a fastener; 510. a fixed sleeve; 520. a fixing bolt; 530. a limiting piece;

6. a third flanging;

7. and (5) sealing the adhesive tape.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present utility model, the term "inner" refers to a direction toward the housing cavity and the term "outer" refers to a direction away from the housing cavity. The terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," "high," "low," etc., as used herein, unless otherwise explicitly defined, refer to an orientation or positional relationship based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not necessarily indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the utility model in particular.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Referring to fig. 2 to 8, an inverter housing structure provided by the present utility model will be described. The inverter housing structure comprises a shell 1 with an opening 1a formed at the front side and a cover plate 2 covering the opening 1 a; the edge ring of the opening 1a is provided with a first flanging 3 which extends outwards, the front side surface of the first flanging 3 forms a sealing contact surface 3a which is vertical to the front-back direction, the edges of at least two opposite first flanging 3 are also provided with a second flanging 4 which extends outwards, and the shell 1, the first flanging 3 and the second flanging 4 are integrally bent and formed; the rear side of the cover plate 2 is in sealing butt with the sealing contact surface 3a, a first mounting hole 4a penetrating through the second flange 4 in the front-back direction is formed in the second flange, a second mounting hole 2a penetrating through the cover plate 2 in the front-back direction is correspondingly formed in the cover plate 2, and the first mounting hole 4a and the second mounting hole 2a are fixedly connected through a fastener 5. Wherein the rear side of the housing 1 forms a connection port.

Compared with the prior art, the inverter shell structure provided by the embodiment adopts the arrangement mode of the outward flange, the sealing contact surface 3a is formed outside the opening 1a of the shell 1, the corresponding first flange 3 is also formed into the second flange 4 in the outward flange mode, and on the premise of meeting the requirement of abutting and sealing with the cover plate 2 and the assembly and fixation requirement of the cover plate 2, the shell, the first flange 3 and the second flange 4 can be formed in an integral bending forming mode, so that the processing difficulty is effectively reduced, and the processing cost is reduced; meanwhile, due to the fact that the fastening piece 5 is installed in a front-back penetrating mode, the shell 1 and the cover plate 2 are abutted tightly in the front direction, the fastening piece 5 directly provides abutting acting force after being assembled, the fastening piece 5 cannot receive the action of lateral shearing force, and the problem that the fastening piece is deformed and broken due to lateral shearing is avoided.

In some embodiments, the first flange 3 may have a structure as shown in fig. 3 to 8. Referring to fig. 3 to 8, the first flange 3 includes a first plate body 310 and a second plate body 320, and the first plate body 310 is connected to the edge of the opening 1a and extends outward; the second plate 320 is disposed at an outer edge of the first plate 310 and extends rearward; the second flange 4 is connected to the rear side edge of the corresponding second plate 320 and extends outwardly. Wherein, the first plate 310, the second plate 320, the second flange 4 and the housing 1 are all integrally formed by bending. According to the embodiment, the front-back dislocation arrangement of the second flanging 4 and the first plate body 310 is realized through the second plate body 320, so that the second flanging 4 is more back, a certain adaptation space is reserved between the second flanging 4 and the cover plate 2, the situation that the second flanging 4 is too far forward and occupies too much space in front of the shell 1 is avoided, the structure of the cover plate 2 is complicated for adapting to the position of the second flanging 4 is avoided, the size of the inverter shell in the front-back direction is more compact, the appearance is more attractive, and the manufacturing difficulty of parts can be reduced.

On the basis of the above embodiment, the adjacent first plates 310 are connected with each other, and the adjacent second plates 320 are also connected with each other, so as to form a continuous flanging structure in cooperation with the edge of the opening 1a, so that a gap-avoiding butt joint structure is formed between the adjacent two first plates 310, so as to meet the requirement of butt joint assembly. For example, the abutment ends of two adjacent first plates 310 are respectively formed with the clearance grooves, or the abutment end of one of the first plates 310 is formed with the clearance groove, so that the two adjacent first plates 310 can be reliably abutted. It should be noted that the connection manner between the first plates 310 and the connection manner between the second plates 320 include, but are not limited to, welding.

In some embodiments, the fastener 5 may be configured as shown in fig. 2 and 5. Referring to fig. 2 and 5, the fastener 5 includes a fixing sleeve 510 and a fixing pin 520; the fixed sleeve 510 is inserted into the second mounting hole 4a, the front end of the fixed sleeve 520 is provided with a limiting piece 530, and the limiting piece 530 is attached to the front side surface of the cover plate 2 for limiting; the fixing pin 520 passes through the first mounting hole 4a and extends into the fixing sleeve 510 to be fixedly coupled with the fixing sleeve 510. Wherein, the fixed sleeve 510 is integrally connected with the limit piece 530. The fastener 5 of the embodiment adopts a split design, the rear end head of the fixed bolt 520 pushes the second flanging 4 forwards, the limiting piece 530 pushes the cover plate 2 backwards, and extrusion force is applied to the front end and the rear end of the fixed bolt 520 through the matching of the limiting piece 530 and the fixed bolt 520, so that the cover plate 2 is abutted against the first flanging 3, and the requirement of assembly reliability is met; meanwhile, since the limiting piece 530 is exposed, the thickness is smaller, the appearance can be made smoother, the arrangement can be provided with patterns, compared with the traditional fastening connecting pieces such as pins and bolts, the effect of the fastening piece 5 of the embodiment on the appearance of the inverter shell structure is smaller, and even the effect of beautifying can be achieved.

In this embodiment, a fixing hole is formed in the fixing sleeve 510, and the fixing bolt 520 is fixedly connected to the fixing hole, and the specific embodiment is as follows: the fixing holes are screw holes, the fixing bolts 520 are bolts, and the fixing connection is realized in a threaded manner; or, the fixing hole is a clamping hole, the fixing bolt 520 is a direct-insertion buckle, and the fixing connection is realized in a clamping manner.

On the basis of the above embodiment, referring to fig. 5, the front side of the cover plate 2 forms a receiving groove 2b, and the limiting piece 530 is disposed in the receiving groove 2b. By reasonably setting the depth of the accommodating groove 2b, the degree that the front side surface of the limiting piece 530 protrudes out of the front side surface of the cover plate 2 can be controlled, and the appearance of the front side surface of the cover plate 2 can be adjusted. For example, in this embodiment, the depth of the accommodating groove 2b is set to be substantially identical to the thickness of the limiting piece 530, and the front side surface of the limiting piece 530 is flush with the front side surface of the cover plate 2 after assembly, so that the exposed surface of the cover plate 2 after assembly is relatively flat, and the aesthetic degree is improved.

In some embodiments, the limiting piece 530 is fixedly connected with the cover plate 2, the rear end of the fixing sleeve 510 is abutted against the front side surface of the second flange 4, and during and after assembly, the fixing sleeve 510 can form a support between the second flange 4 and the cover plate 2, so that deformation of the second flange 4 and the cover plate 2 corresponding to the area of the fastener 5 is avoided, and the reliability of assembly is ensured; meanwhile, the integrated arrangement of the cover plate 2 and the fixed sleeve 510 is realized, the process of placing the fixed sleeve 510 is omitted in the process of assembling the inverter, the convenience of assembly is improved to a great extent, and the single operation is facilitated.

In this embodiment, no matter whether the accommodating groove 2b is formed, the limiting piece 530 and the cover plate 2 can be fixedly connected through processes such as bonding, secondary injection molding, riveting, etc. For example, the fixing sleeve 510 and the limiting piece 530 may be machined in advance, and a limiting groove is formed between the fixing sleeve 510 and the limiting piece 530, the fixing sleeve 510 and the limiting piece 530 are preset into an injection mold, and the fixing sleeve 510 and the limiting piece 530 are implanted into the cover plate 2 while the cover plate 2 is manufactured through a two-shot injection process, so as to realize fixed connection; in the injection molding process, the limiting groove is filled with injection molding liquid, and the injection molding liquid can form a reliable limiting effect with the limiting groove after solidification, so that the fixing sleeve 510 and the limiting piece 530 are prevented from falling off. As another example, the fixing sleeve 510 is riveted to the second mounting hole 4a, and the limiting piece 530 is directly embedded and fixed in the accommodating groove 2 b; in this embodiment, the second mounting hole 4a may be formed by pre-processing, or may be formed by directly penetrating the cover plate 2 by the fixing sleeve 510 during the riveting process, and the specific forming manner of the second mounting hole 4a is not limited herein.

Some embodiments employ the structures shown in fig. 3-6 and 8. Referring to fig. 3 to 6 and 8, the edge of the cover plate 2 is provided with a third flange 6 extending rearward, the third flange 6 being located outside the first flange 3 and the second flange 4. The third flanging 6 can shield the gap between the first flanging 3 and the cover plate 2 and the gap between the second flanging 4 and the cover plate 2, so that the attractiveness is improved, and the sealing property between the cover plate 2 and the shell 1 is prevented from being influenced by the fact that the gap is directly exposed.

Some embodiments employ a structure as shown in fig. 7. Referring to fig. 7, the edge of the second flange 4 is formed with a clearance slope 4b adapted to the corner of the third flange 6. The second turn-ups 4 of this embodiment can cooperate with third turn-ups 6, leads to apron 2 when the lid closes, makes things convenient for apron 2 to aim at opening 1a to avoid apron 2 skew preset position after the lid closes, make things convenient for the installation of fastener 5, can realize alone operation, use manpower sparingly material resources more.

Some embodiments employ the structures shown in fig. 2-4 and 8. Referring to fig. 2 to 4 and 8, in order to improve the tightness of the cover plate 2 after being covered with the housing 1, the rear side surface of the cover plate 2 is provided with a sealing rubber strip 7, the rear side surface of the sealing rubber strip 7 is in sealing contact with the sealing contact surface 3a, and the sealing rubber strip 7 is kept sealed through low-carbon deformation, so that the structure is simple and the sealing is reliable.

On the basis of the above embodiment, referring to fig. 2 to 4, the front side surface of the sealing rubber strip 7 is a plane, the rear side surface is an arc surface, and the reliability of sealing is improved by abutting the arc surface with the sealing contact surface 3 a.

Based on the same inventive concept, the embodiment of the application also provides an inverter, which comprises the inverter shell structure.

Compared with the prior art, the inverter provided by the embodiment can be electrically connected with the photovoltaic pole plate, and the inverter has the advantages that the overall processing cost of the inverter is reduced by adopting the inverter shell structure, the problem that the shell is easy to be connected with a cover plate connection area to fail is effectively solved, and further the later maintenance cost of the inverter is reduced.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. An inverter housing structure, comprising:

a shell with an opening formed at the front side and a cover plate covering the opening;

the edge ring of the opening is provided with a first flanging extending outwards, the front side surface of the first flanging forms a sealing contact surface vertical to the front-back direction, the edges of at least two opposite first flanging are also provided with a second flanging extending outwards, and the shell, the first flanging and the second flanging are integrally bent and formed;

the rear side of apron with sealed contact surface seals the butt, the first mounting hole that link up around having been seted up to the second turn-ups, the apron corresponds to be equipped with the second mounting hole that link up around, first mounting hole with second mounting hole passes through fastener fixed connection.

2. The inverter housing structure of claim 1 wherein said first flange includes a first plate and a second plate, said first plate being connected to an edge of said opening and extending outwardly; the second plate body is arranged at the outer side edge of the first plate body and extends backwards; the second flanging is connected to the rear side edge corresponding to the second plate body and extends outwards.

3. The inverter housing structure of claim 1 wherein said fastener includes a retaining sleeve and a retaining pin; the fixed sleeve is inserted into the second mounting hole, a limiting piece is arranged at the front end of the fixed sleeve, and the limiting piece is attached to the front side face of the cover plate for limiting; the fixing bolt penetrates through the first mounting hole and stretches into the fixing sleeve to be fixedly connected with the fixing sleeve.

4. The inverter housing structure of claim 3 wherein a receiving groove is formed in a front side of the cover plate, and the limiting piece is disposed in the receiving groove.

5. The inverter housing structure according to claim 3 or 4, wherein the stopper is fixedly connected to the cover plate, and the rear end of the fixing sleeve abuts against the front side surface of the second flange.

6. The inverter housing structure of claim 1 wherein an edge of said cover plate is provided with a third flange extending rearward, said third flange being outboard of said first flange and said second flange.

7. The inverter case structure according to claim 6, wherein an edge of the second flange is formed with a clearance slope adapted to a corner of the third flange.

8. The inverter housing structure of claim 1 wherein a back side of the cover plate is provided with a sealing strip, the back side of the sealing strip being in sealing abutment with the sealing contact surface.

9. The inverter housing structure of claim 8 wherein said sealing strip has a planar front side and a cambered rear side.

10. An inverter comprising the inverter housing structure as claimed in any one of claims 1 to 9.

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