Spring buckle and inverter case with same

Abstract

The utility model discloses a spring buckle and an inverter case with the same. The spring buckle is configured to connect and fix the box body and the cover body, and comprises a shell which is provided with a sliding cavity and a through hole communicated with the sliding cavity; the clamping tongue is installed in the sliding cavity and suitable for sliding in the axis direction of the sliding cavity, and the end, facing the through hole, of the clamping tongue is configured to be a clamping part; the spring is mounted on the clamping tongue and is configured to push the clamping tongue to the through hole and enable the clamping part to penetrate through the through hole and then extend out of the shell; when the cover body is closed, the clamping tongue contracts inwards under the action of external force and compresses the spring, after the cover body is closed, the external force on the clamping tongue disappears, and the spring drives the clamping tongue to reset so as to lock the cover body and the box body. The inverter case comprises the spring buckle, a case body and a cover body, the cover body is hinged to the case body, a bayonet is arranged on the cover body, the spring buckle is fixedly installed on the case body, and the spring buckle is configured to be connected with the bayonet to lock the cover body when the cover body is closed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inverters, and particularly discloses a spring buckle and an inverter cabinet with the same. BACKGROUND

[0002] As a core device in new energy applications such as photovoltaic power generation and energy storage systems, the cabinet structure design of an inverter is directly related to the production and assembly efficiency, use and maintenance convenience, and overall appearance aesthetics of the product. At present, the inverter cabinets on the market usually include a cabinet body, a front cover, and a wiring compartment cover, and the main assembly methods mainly include the following two schemes:

[0003] The first scheme adopts a structure in which the front cover and the wiring compartment cover are directly fastened to the cabinet body by multiple screws. Although this method is simple in structure, it requires repeated tightening or disassembly of a large number of screws during production and assembly and later maintenance, which results in a long operation time and low efficiency. For users, the disassembly and assembly process is complicated when checking or maintaining wiring, and the screws are easily lost or damaged after multiple disassembly and assembly, which affects the use experience. In addition, in order to fasten the screws, the cabinet body needs to be made into an inward flange, which greatly limits the operation space of the user wiring and makes it extremely inconvenient for the user to wire.

[0004] The second scheme adopts a structure in which the wiring compartment cover is first fixed to the front cover by screws, and the front cover is then assembled to the cabinet body by another set of screws. Although this structure simplifies the cabinet opening to some extent, the wiring operation space is severely limited because the wiring compartment cover is attached to the inner side of the front cover. When connecting the cable, the user often has difficulty operating due to the small space, which reduces the wiring efficiency and convenience. In addition, this structure still relies on multiple screws for fastening and does not fundamentally solve the problem of inconvenient disassembly and assembly.

[0005] Both of the above-mentioned existing schemes have the following obvious defects: first, a large number of screws need to be disassembled and assembled during production and maintenance, which not only consumes time and effort but also increases the risk of screw loss or damage; second, both schemes greatly compress the wiring operation space, making it extremely inconvenient for the user to wire; and third, the multiple screws distributed on the front of the cabinet body damage the overall integrity and aesthetics of the product appearance. Therefore, a connecting structure needs to be designed for the inverter cabinet, and the structure of the inverter cabinet needs to be improved accordingly to solve the above technical problems. CONTENT OF THE INVENTION

[0006] The present application aims to provide a spring buckle.

[0007] Another object of the present application is to provide an inverter cabinet with the spring buckle.

[0008] To achieve the above object, the technical scheme adopted by the present application is as follows: A spring buckle configured to connect and fix a box body and a cover body, comprising: a shell, the shell being provided with a sliding cavity and a through hole in communication with the sliding cavity; a clamping tongue, the clamping tongue being installed in the sliding cavity and being adapted to slide along the axis direction of the sliding cavity, one end of the clamping tongue towards the through hole being configured as a clamping portion; a spring, the spring being installed on the clamping tongue and being configured to push the clamping tongue towards the through hole and make the clamping portion protrude out of the shell after passing through the through hole; when the cover body is closed, the clamping tongue is inwardly retracted under the action of external force and compresses the spring, after the cover body is closed, the external force on the clamping tongue disappears, and the spring drives the clamping tongue to reset so as to lock the cover body and the box body.

[0009] As a preferred, the inner wall of the sliding cavity is formed with a first protruding strip and a second protruding strip, the first protruding strip and the second protruding strip are both arranged along the axis direction of the sliding cavity, the outer wall of the clamping tongue is provided with a first recess and a second recess, the first protruding strip is connected with the first recess, and the second protruding strip is connected with the second recess, so as to jointly form a guide structure to constrain the clamping tongue to slide only along the axis direction of the sliding cavity.

[0010] As a preferred, the clamping portion has an inclined surface, and the inclined surface is configured to be inclined towards the direction of external force to bear the external force, when the external force acts on the inclined surface, the external force provides a driving force to move the clamping tongue inwardly along the axis direction of the sliding cavity, so as to move the clamping portion inwardly into the sliding cavity.

[0011] As a preferred, the clamping portion is provided with a mounting cavity on the side away from the through hole, the spring is arranged in the mounting cavity, and the length of the spring in a natural state is greater than the axial length of the mounting cavity.

[0012] As a preferred, the shell is symmetrically provided with a connecting lug on both sides, the connecting lug is provided with a connecting hole, the connecting lug is configured as a mounting interface of the spring buckle, and the spring buckle is fixedly mounted through a fastener penetrating the connecting hole.

[0013] An inverter case, comprising the spring buckle, the box body and the cover body, the cover body being hinged to the box body, the opening edge of the box body being provided with an outward turning edge, the cover body being provided with a bayonet, and the spring buckle being fixedly mounted on the box body and being configured to be connected with the bayonet to lock the cover body when the cover body is closed.

[0014] As a preferred, the cover body is provided with a bending portion, the bayonet is arranged on the bending portion, and the bayonet is adapted to the clamping portion.

[0015] Further preferably, a bending edge is arranged on the outer turning edge, a first through hole is arranged on the bending edge, and a second through hole is arranged on the bending edge correspondingly; after the cover is closed, the cover and the box are further fixed and connected by the fastener penetrating through the first through hole and the second through hole.

[0016] As a preferred, the cover and the box are connected by a hinge, the hinge is fixed and connected with the box by the cooperation of a screw and a press-in nut column, and the hinge is fixed and connected with the cover by the cooperation of a flange nut and a press-in screw.

[0017] As a preferred, a baffle is detachably arranged in the box, and the baffle is configured to cover the high-voltage line in the box.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] (1) The spring buckle structure is used to replace the traditional screw fastening mode, so that the box and the cover are quickly locked and released; when the cover is closed, the latch is automatically clamped into the cover clamp under the action of the spring, and the locking is completed; when the cover is opened, only a small external force is needed to make the latch retract, and the cover is unlocked; the process does not need tool operation, greatly simplifies the production assembly and later maintenance process, avoids the time-consuming and labor-consuming problem of repeatedly tightening or disassembling a large number of screws, and reduces the risk of screw loss or damage.

[0020] (2) The installation mode of the spring buckle avoids the use of the inner turning edge structure of the box, the opening edge of the box in the application is designed as an outer turning edge, the internal space of the wiring compartment is effectively expanded, the user is more convenient and smooth when performing cable access or maintenance, and the wiring difficulty problem caused by the small space in the existing scheme is solved.

[0021] (3) The design of the spring buckle makes it unnecessary to arrange a plurality of screw holes on the front surface of the cover, so that the appearance of the case is more simple and flat, the overall appearance and visual quality of the product are improved, and the modern industrial design requirement is met. DETAILED DESCRIPTION

[0022] Figure 1 is a three-dimensional structure schematic view of the open state of the utility model.

[0023] Figure 2 is a three-dimensional structure schematic view of the open state of the utility model.

[0024] Figure 3 is a three-dimensional structure schematic view of the closed state of the utility model.

[0025] Figure 4 is a three-dimensional structure sectional view of the utility model.

[0026] Figure 5 is Figure 4 a local enlarged view of A in the figure.

[0027] Figure 6 is a schematic view of a spring buckle three-dimensional structure of the utility model.

[0028] Figure 7 is a spring buckle three-dimensional structure of the utility model.

[0029] Figure 8 is a spring buckle three-dimensional structure of the utility model.

[0030] In the figure: 1, box body; 11, outer turning edge; 12, bending edge; 13, first through hole; 2, cover body; 21, bending part; 22, bayonet; 23, second through hole; 3, baffle; 4, spring buckle; 41, shell; 411, connecting lug; 412, connecting hole; 413, sliding cavity; 414, first convex strip; 415, second convex strip; 416, through hole; 42, clamping tongue; 421, first recess; 422, second recess; 423, clamping part; 424, mounting cavity; 43, spring; 5, hinge. DETAILED DESCRIPTION

[0031] In the following, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined arbitrarily to form new embodiments without conflict.

[0032] In the description of the present application, it should be noted that for orientation words, such as terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0033] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0034] The terms "comprise" and "comprising", and any variations thereof, as used in the specification and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of steps or elements does not necessarily comprise only those steps or elements but can include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

[0035] The inverter case on the market usually includes main components such as a box body, a front cover and a wiring compartment cover, and its assembly mode mainly exists in the following two mainstream schemes: scheme one adopts a structure in which the front cover and the wiring compartment cover are directly fastened and connected with the box body through multiple screws; scheme two adopts a "cover-in-cover" structure, that is, the wiring compartment cover is first fixed on the front cover through screws, and the front cover is then assembled on the box body through another set of screws; however, both of the existing schemes need to disassemble and assemble a large number of screws in the production and maintenance links, which not only consumes time and effort, but also increases the risk of screw loss or damage; secondly, both of the two schemes greatly compress the wiring operation space, resulting in great inconvenience for users to wire; in addition, the multiple screws distributed on the front of the case damage the integrity and aesthetics of the product appearance, and therefore a connection structure for the inverter case needs to be designed and the structure of the inverter case needs to be improved accordingly.

[0036] A preferred embodiment of the present application is shown in Figures 6 to 8 A spring buckle 4 configured to connect and fix the box body 1 and the cover body 2, which includes: a shell 41, the shell 41 is provided with a sliding cavity 413 and a through hole 416 communicating with the sliding cavity 413; a clamping tongue 42 installed in the sliding cavity 413 and adapted to slide along the axis direction of the sliding cavity 413, one end of the clamping tongue 42 towards the through hole 416 is configured as a clamping part 423; a spring 43 installed on the clamping tongue 42, and configured to push the clamping tongue 42 towards the through hole 416, and make the clamping part 423 protrude out of the shell 41 after passing through the through hole 416; when the cover body 2 is closed, the clamping tongue 42 is inwardly retracted and compresses the spring 43 under the action of external force, and after the cover body 2 is closed, the external force on the clamping tongue 42 disappears, and the spring 43 drives the clamping tongue 42 to reset to lock the cover body 2 and the box body 1.

[0037] The present application replaces the traditional screw fastening mode with the spring buckle 4 structure, realizes the quick locking and releasing of the box body 1 and the cover body 2; when the cover body 2 is closed, the clamping tongue 42 is automatically clamped into the cover body 2 clamping port 22 under the action of the spring 43, and the locking is completed; when opening, only a small external force is needed to make the clamping tongue 42 retract, and the cover body 2 is unlocked; this process does not need tool operation, greatly simplifies the production assembly and later maintenance process, avoids the time-consuming and labor-consuming problem of repeatedly tightening or disassembling a large number of screws, and at the same time reduces the risk of screw loss or damage.

[0038] In the embodiment, as Figure 8As shown, the inner wall of the sliding cavity 413 is shaped with a first protrusion 414 and a second protrusion 415, both of which are arranged along the axis direction of the sliding cavity 413, and the outer wall of the clamping tongue 42 is provided with a first groove 421 and a second groove 422, the first protrusion 414 is connected with the first groove 421, and at the same time, the second protrusion 415 is connected with the second groove 422, thereby jointly forming a guide structure to constrain the clamping tongue 42 to slide only along the axis direction of the sliding cavity 413.

[0039] The above design ensures that the clamping tongue 42 can only move linearly along the axis direction of the sliding cavity 413 when subjected to external force or the force of the spring 43, and cannot rotate or skew; the first protrusion 414 and the second protrusion 415 provide precise path guidance for the reciprocating movement of the clamping tongue 42, preventing unnecessary friction points from being generated between the clamping tongue 42 and the inner wall of the sliding cavity 413, which can cause wear or jamming; this guide structure ensures that the clamping tongue 42 can retract and pop out accurately and smoothly each time, greatly improving the reliability and durability of the spring buckle 4 under repeated use.

[0040] In specific implementation, the first protrusion 414 and the second protrusion 415 can be arranged on the upper and lower surfaces of the sliding cavity 413 and arranged centrally, which can ensure balanced force, and of course, in other embodiments, they can also be arranged on the left and right surfaces or only the first protrusion 414 is arranged, and the specific arrangement can be adjusted by those skilled in the art.

[0041] In addition, as shown in Figs. 1 and 2, Figure 6 and Figure 7 As shown, the clamping portion 423 has an inclined surface, which is configured to be inclined towards the direction of the external force to bear the external force, and when the external force acts on the inclined surface, the external force provides a driving force for moving the clamping tongue 42 inward along the axis direction of the sliding cavity 413, thereby moving the clamping portion 423 inward into the sliding cavity 413. This mechanism makes it unnecessary to manually operate the buckle when closing the cover body 2, and only the closing action itself can drive the clamping tongue 42 to retract, and after the cover body 2 is in place, the clamping tongue 42 automatically pops out and locks under the action of the spring 43, so that the user can automatically lock the cover body 2 by simply closing it, which greatly simplifies the operation steps and improves the user experience compared with the prior art solution that requires disassembly of multiple screws; at the same time, the arrangement of the inclined surface provides a smooth transition, making the retraction process of the clamping tongue 42 more gentle and reducing the impact and noise caused by hard collision.

[0042] In this embodiment, as shown in Figs. 1 and 2, Figure 8As shown, the clamping part 423 is provided with a mounting cavity 424 away from the through hole 416 side, the spring 43 is arranged in the mounting cavity 424, and the length of the spring 43 in the natural state is greater than the axial length of the mounting cavity 424; because the natural length of the spring 43 is greater than the axial length of the mounting cavity 424, the spring 43 will be in a pre-compressed state in the static state of being installed in place, ensuring that the spring buckle 4 always has a positive pressing force on the socket 22 in the locked state, avoiding loosening due to vibration and other reasons, and the connection is more reliable; the mounting cavity 424 limits the spring 43 in a specific small space, preventing it from being excessively bent, deviated or falling off during operation. Through this limitation, the working state of the spring 43 is more stable, the failure risk is reduced, and the service life of the buckle is prolonged.

[0043] In the embodiment, as shown in the drawings, Figure 7 As shown, the shell 41 is symmetrically provided with a connecting lug 411 on both sides, the connecting lug 411 is provided with a connecting hole 412, the connecting lug 411 is configured as a mounting interface of the spring buckle 4, and fixed assembly is realized by a fastener penetrating the connecting hole 412; this design allows the spring buckle 4 to be used as an independent modular component, so that if the spring buckle 4 is damaged, it can be replaced independently without the need to replace the entire box body 1, thereby reducing maintenance costs.

[0044] As shown in the drawings, Figures 1 to 2 The present application provides an inverter case, which comprises the spring buckle 4, the box body 1 and the cover body 2, the cover body 2 is hinged to the box body 1, the opening edge of the box body 1 is provided with an outward turning edge 11, the cover body 2 is provided with a socket 22, and the spring buckle 4 is fixedly installed on the box body 1. In specific implementation, a press-in hole can be formed on the right side of the box body 1 and a press-in nut column is arranged, the spring buckle 4 is fixed on the right side of the box body 1 by a screw, and the spring buckle 4 is configured to be connected with the socket 22 to lock the cover body 2 when the cover body 2 is closed.

[0045] The present application designs the front cover and the wiring compartment cover in the prior art as a whole, i.e. the cover body 2 in the embodiment, and connects the cover body 2 and the box body 1 through the spring buckle 4 and the hinge 5. The mounting mode of the spring buckle 4 avoids the use of an inward turning edge structure of the box body 1. In the present application, the opening edge of the box body 1 is designed as an outward turning edge 11, which effectively expands the internal space of the wiring compartment. When a user performs cable access or maintenance, the operation is more convenient and smooth, and the wiring difficulty problem caused by the small space in the prior art is solved. Through the design of the spring buckle 4, the front surface of the cover body 2 does not need to be provided with multiple screw holes, so that the appearance of the case is more simple and flat, the overall appearance and visual texture of the product are improved, and the modern industrial design requirements are met.

[0046] In the embodiment, as shown in the drawings, Figure 2 , Figure 4 and Figure 5As shown, the cover 2 is provided with a bending part 21, and the bayonet 22 is arranged on the bending part 21, and the bayonet 22 is matched with the clamping part 423. In the embodiment, the bayonet 22 is arranged as a rectangular hole, and the size is matched with the clamping part 423. The design of the bending part 21 can be understood as adding a reinforcing rib to the edge of the cover 2, which effectively enhances the rigidity and strength of the edge of the cover 2, so that the cover 2 is not easy to deform when bearing the locking force of the buckle and external impact.

[0047] The above design can be clearly understood that the spring buckle 4 is arranged on the side, and the bayonet 22 is also arranged on the side through the bending part 21, so that the locking mechanism is not arranged on the front of the cover 2. Compared with the locking mechanism arranged on the front of the cover 2 in the prior art, the arrangement of the present scheme can provide more space inside the box body 1, so that the wiring operation space is larger.

[0048] Further, as shown in Figure 1 and Figure 3 , the everted edge 11 is provided with a bending edge 12, the first through hole 13 is arranged on the bending edge 12, and the second through hole 23 is arranged on the bending part 21; after the cover 2 is closed, the cover 2 and the box body 1 are further fixed and connected through the fastener penetrating the first through hole 13 and the second through hole 23, which is an additional safety guarantee besides the main locking function of the spring buckle 4. The spring buckle 4 is responsible for daily convenient opening and closing, and this structure provides stronger connection force when needed to ensure the locking between the cover 2 and the box body 1. Here, the fastener can adopt a screw, so that only one screw and the spring buckle 4 need to be opened to realize the unlocking of the cover 2. Compared with the scheme of opening multiple screws in the prior art, the present scheme greatly simplifies the operation.

[0049] In the embodiment, as shown in Figure 2 , the cover 2 and the box body 1 are connected through the hinge 5. In specific implementation, the press-in hole can be arranged on the left side of the box body 1 and the press-in nut column is arranged, the hinge 5 is fixed on the left side wall of the box body 1 through a screw, the press-in hole is arranged on the left side of the cover 2 and the press-in screw is arranged, and the cover 2 and the hinge 5 are connected through the flange nut.

[0050] Because there is no front cover in the prior art, when the user opens the cover 2 for wiring, the high-voltage line will be completely exposed, which is not safe enough. Therefore, a structure is designed to prevent the user from being mistaken. In specific implementation, a baffle 3 can be detachably installed in the box body 1. The baffle 3 can be fastened on the support on the inner wall of the box body 1 through a screw, and the baffle 3 is configured to cover the high-voltage line in the box body 1.

[0051] The foregoing describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments, and the above-described embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A spring catch configured to secure a box to a lid, the spring catch comprising: a base; a spring; a catch; and a lever, wherein the spring is configured to bias the catch towards the base, and wherein the lever is configured to move the catch away from the base. The application relates to a spring buckle, which comprises a shell, a clamping tongue, a spring and a cover body.

2. A spring clip as claimed in claim 1, wherein The inner wall of the sliding cavity is formed with a first convex strip and a second convex strip, the outer wall of the clamping tongue is provided with a first recess and a second recess, the first convex strip is connected with the first recess, the second convex strip is connected with the second recess, and the first convex strip and the second convex strip jointly form a guide structure to restrict the clamping tongue to slide along the axial direction of the sliding cavity.

3. A spring clip as claimed in claim 1, wherein, The clamping portion is provided with a mounting cavity on the side away from the through hole, the spring is arranged in the mounting cavity, and the length of the spring in a natural state is greater than the axial length of the mounting cavity.

4. A spring clip as claimed in claim 1, wherein, The shell is symmetrically provided with connecting ears on two sides, the connecting ears are provided with connecting holes, the connecting ears are configured as the assembly interfaces of the spring buckle, and fasteners penetrating through the connecting holes are used to realize fixed assembly.

5. A spring clip as defined in claim 1, wherein The application further relates to a spring buckle, a box body and a cover body, the cover body is hinged to the box body, the opening edge of the box body is provided with an outward turning edge, the cover body is provided with a clamping port, the spring buckle is fixedly arranged on the box body, and the spring buckle is configured to be connected with the clamping port to lock the cover body when the cover body is closed.

6. An inverter cabinet, characterized by The cover body is provided with a bending portion, the clamping port is arranged on the bending portion, and the clamping port is matched with the clamping portion.

7. An inverter cabinet as claimed in claim 6, characterised in that, The outward turning edge is provided with a bending edge, the bending edge is provided with a first through hole, the bending portion is correspondingly provided with a second through hole, the cover body and the box body are further fixedly connected through fasteners penetrating through the first through hole and the second through hole after the cover body is closed.

8. An inverter cabinet as claimed in claim 7, characterized in that The cover body and the box body are connected through a hinge, the hinge and the box body are fixedly connected through cooperation of a screw and a press-in nut column, and the hinge and the cover body are fixedly connected through cooperation of a flange nut and a press-in screw.

9. An inverter cabinet as claimed in claim 6, characterized in that A baffle is detachably arranged in the box body, and the baffle is configured to cover high-voltage lines in the box body.

10. An inverter cabinet as claimed in claim 6, characterized in that ​

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