Insulating base fixing structure

Abstract

The utility model provides an insulating base fixing structure. The insulating base fixing structure comprises a top cover, side plates, an insulating base, a bottom plate and angle plates. The top cover is located on the upper portion of the insulating base. And the bottom plate is positioned at the lower part of the insulating base. And the two side plates are respectively positioned on the left side and the right side of the insulating base. And the top cover, the insulating base and the bottom plate are fixedly arranged in the two side plates. The flat positioning protrusions arranged on the top cover, the bottom plate and the insulation base penetrate into the flat-plate-shaped side plates, accurate positioning and fastening of installation of the insulation base are achieved, and angle plates are buckled to the outer sides of the side plates and the bottom plate, so that outer side installation and fixation in the transportation process are achieved. The structure is simple, positioning is accurate, safe and reliable.

Description

Technical Field

[0001] This invention relates to a drawer base for low-voltage circuit breakers, and more particularly to a fixing structure for the insulating base of a drawer base for low-voltage circuit breakers. Background Technology

[0002] In low-voltage power distribution equipment, drawer-type devices are often used to enable rapid deployment and connection of circuit breakers and other components to power lines, or to facilitate rapid disconnection and isolation during maintenance. For rapid deployment of the circuit breaker, the sliding plates on both sides of the drawer-type device are first pulled out, the circuit breaker body is placed between the two plates, and then the drawer-type device is pushed in. The mechanical transmission structure of the drawer-type device then moves the two sliding plates, thereby electrically connecting the circuit breaker body to the power line. The drawer-type device is equipped with an insulating base, on which several electrical connection cavities are provided. Electrical connection components are installed within these cavities. The circuit breaker body is electrically connected to these electrical connection components installed on the insulating base, thus achieving connection and conduction between the circuit breaker body and the power line. Currently, the installation method for the insulating base generally relies on the connecting edge formed by bending the side plate and attaching it to the insulating base, then using screws to secure it through multiple through holes on the connecting edge. Using this method requires bending the side plate, which can easily cause hole misalignment, inaccurate positioning, and misalignment of the side plate, affecting safety. Furthermore, it is inconvenient to install, involves complex procedures, and reduces production efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an insulating base fixing structure that is simple in structure and more accurate in installation and positioning, which simplifies the manufacturing and installation process of parts and effectively improves the assembly accuracy, structural strength and safety of use.

[0004] To achieve the above objectives, this invention designs an insulating base fixing structure, including a top cover, side plates, an insulating base, a bottom plate, and corner plates. The top cover is located on the upper part of the insulating base. The bottom plate is located on the lower part of the insulating base. There are two side plates, located on the left and right sides of the insulating base respectively. The top cover, insulating base, and bottom plate are fixedly installed inside the side plates.

[0005] Specifically, the top cover has flat top cover protrusions on both sides, and the top cover is positioned on the side plates via these protrusions. The bottom plate has flat bottom plate protrusions on both sides, and the bottom plate is positioned on the side plates via these protrusions. The insulating base has base protrusions on both sides, and the insulating base is positioned on the side plates via these protrusions. The side plates are respectively fitted and fastened to the top cover and the bottom plate, so that the side plates are firmly fitted to the insulating base.

[0006] Furthermore, the side panel is a flat plate. Near the top cover, the side panel has at least one top cover groove and at least one upper mounting hole. Near the insulating base, the side panel has at least one base groove. Near the bottom plate, the side panel has at least one lower mounting hole, at least one bottom plate groove, and at least one corner window.

[0007] Furthermore, the top of the top cover is a cover plate, which is bent to both sides to form cover plate bends, and top cover holes can be provided on the cover plate bends. The front end of the cover plate is bent downward to form a terminal plate, and the left and right sides of the terminal plate are provided with straight top cover protrusions, which are coupled to and opposite to the top cover grooves of the side plate, and the top cover protrusions can pass into the top cover grooves. The rear end of the cover plate is bent downward to form a ventilation plate, which is bent to both sides to form air plate bends, and top cover holes can be provided on the air plate bends. The top cover holes are coupled to and opposite to the upper mounting holes on the side plate.

[0008] Furthermore, the base plate has a substrate underneath, and the substrate has flat base plate protrusions on both sides. These flat base plate protrusions are coupled to the base plate grooves of the side plates, and the base plate protrusions can pass through the base plate grooves. The substrate has mounting edges bent upwards on both sides, and each mounting edge has at least one base plate hole and at least one corner plate groove. The base plate hole is coupled to the lower mounting hole of the side plate, and the corner plate groove is coupled to the corner plate window on the side plate.

[0009] Furthermore, the insulating base has base protrusions on both sides, which are coupled to the base grooves of the side plate, and the base protrusions can be inserted into the base grooves.

[0010] Furthermore, the corner plate is deployed on the outer side of the side plate, and the corner plate is bent upwards towards the side plate to form a locking recess. The side of the locking recess facing inwards towards the side plate is the locking edge, and the side of the locking recess facing outwards towards the side plate is the side plate edge. The locking recess passes sequentially through the corner plate window on the side plate and the corner plate groove on the bottom plate, fastening the side plate and the bottom plate together. The side plate edge of the corner plate is bent outwards to form an installation section, and the installation section is provided with a corner plate hole.

[0011] The technical advantages of this invention lie in its ability to accurately position the insulating base by using straight positioning protrusions on the top cover, bottom plate, and insulating base to penetrate the flat side plates. Furthermore, corner plates are fastened to the outer sides of the side and bottom plates to ensure external installation and fixation during transportation. The structure is simple, the positioning is accurate, and it is safe and reliable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of an insulating base fixing structure involved in the present invention.

[0013] Figure 2 This is a schematic diagram of the top cover of an insulating base fixing structure according to the present invention.

[0014] Figure 3 This is a schematic diagram of the side plate of an insulating base fixing structure according to the present invention.

[0015] Figure 4 This is a schematic diagram of the structure of an insulating base fixing structure according to the present invention.

[0016] Figure 5 This is a front structural diagram of an insulating base with an insulating base fixing structure according to the present invention.

[0017] Figure 6 This is a schematic diagram of the base plate of an insulating base fixing structure involved in this invention.

[0018] Figure 7 This is a schematic diagram of the corner plate of an insulating base fixing structure involved in this invention. Detailed Implementation

[0019] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0020] Marker explanation:

[0021] Top cover 1, top cover hole 101, top cover protrusion 102, cover plate 103, terminal plate 104, ventilation plate 105, ventilation plate bend 106, cover plate bend 107, ventilation hole 108.

[0022] Side panel 2, top cover groove 201, upper mounting hole 202, base groove 203, lower mounting hole 204, bottom plate groove 205, corner window 206.

[0023] Insulating base 3, base protrusion 301, electrical connection cavity 302, busbar window 303.

[0024] Base plate 4, base plate hole 401, base plate protrusion 402, corner plate groove 403, base plate 404, mounting edge 405.

[0025] Corner plate 5, locking edge 501, corner plate hole 502, locking recess 503, mounting section 504, side plate edge 505.

[0026] Figure 1 As shown, an insulating base fixing structure of this embodiment includes a top cover 1, a side plate 2, an insulating base 3, a bottom plate 4, and a corner plate 5.

[0027] The top cover 1 is located on the upper part of the insulating base 3. The bottom plate 4 is located on the lower part of the insulating base 3. There are two side plates 2, located on the left and right sides of the insulating base 3 respectively. The top cover 1, the insulating base 3, and the bottom plate 4 are fixedly installed inside the side plates 2.

[0028] Figure 3 As shown, the side plates 2 on both sides of the insulating base 3 are two identical flat plates. A top cover groove 201 is provided on the side plate 2 near the top cover 1, and the top cover groove 201 is used for the installation and positioning of the top cover 1 and the side plate 2. The side plate 2 also has several upper mounting holes 202 near the top cover 1. A base groove 203 is provided on the side plate 2 near the insulating base 3, and the base groove 203 is used for the installation and positioning of the insulating base 3 and the side plate 2. A base plate groove 205 is provided on the side plate 2 near the bottom plate 4, and the base groove 203 is used for the installation and positioning of the bottom plate 4 and the side plate 2. A corner plate window 206 is provided on the side plate 2 near the bottom plate 4, and the corner plate window 206 is used for the installation of a corner plate 5 on the side plate 2. The side plate 2 also has several lower mounting holes 204 near the bottom plate 4.

[0029] Figure 2 As shown, the top of the top cover 1 is a cover plate 103. The cover plate 103 is bent to both sides to form cover plate bends 107, and top cover holes 101 can be provided on the cover plate bends 107. The front end of the cover plate 103 is bent downward to form a terminal plate 104. Generally, the terminal plate 104 is used for the installation of the secondary terminal assembly of the circuit breaker. The secondary terminal of the circuit breaker in this invention is not shown. The left and right sides of the terminal plate 104 are provided with straight top cover protrusions 102. The top cover protrusions 102 are coupled to the top cover grooves 201 of the side plate 2, and the top cover protrusions 102 can pass through the top cover grooves 201. The rear end of the cover plate 103 is bent downward to form a ventilation plate 105. The ventilation plate 105 is bent to both sides to form air plate bends 106, and top cover holes 101 can be provided on the air plate bends 106. The top cover holes 101 are coupled to the upper mounting holes 202 on the side plate 2. The bend edge 106 of the air plate is also provided with a number of ventilation holes 108, which are used for ventilation and heat dissipation when the circuit breaker is working.

[0030] Figure 6 As shown, the base plate 4 has a substrate 404 underneath it. The substrate 404 has straight base plate protrusions 402 on both sides, which are coupled to the base plate grooves 205 of the side plate 2. The base plate protrusions 402 can pass through the base plate grooves 205. The substrate 404 has upwardly bent mounting edges 405 on both sides, and these mounting edges have several base plate holes 401, which are coupled to the lower mounting holes 204 of the side plate 2. The mounting edges also have corner plate grooves 403, which are coupled to the corner plate windows 206 on the side plate 2.

[0031] Figure 4 , Figure 5As shown, the insulating base 3 has base protrusions 301 on both sides. The base protrusions 301 are coupled to the base grooves 203 of the side plate 2 and can be inserted into the base grooves 203. Figure 5 As shown, the protrusion height T of the base protrusion 301 must be greater than or equal to half the thickness of the side plate 2 to ensure reliable positioning. The insulating base 3 is provided with several electrical connection cavities 302 according to the different circuit breaker configurations, for the installation and deployment of electrical connection components. Each electrical connection cavity 302 is provided with a corresponding busbar window 303, for the circuit breaker terminal block to pass through the busbar window 303 and be placed outside the insulating base 3, for the connection between the circuit breaker and the power distribution line. Figure 4 and Figure 5 The circuit breaker shown is a three-phase circuit breaker, with each phase having an incoming terminal and an outgoing terminal. Each incoming or outgoing terminal is equipped with an electrical connection assembly and a terminal block. Figure 4 and Figure 5 The insulating base 3 shown has 6 electrical connection cavities 302 and 6 busbar windows 303.

[0032] Figure 7 As shown, the corner plate 5 is deployed on the outer side of the side plate 2, and the corner plate 5 is bent upwards towards the side plate 2 to form a locking recess 503. The side of the locking recess 503 facing inwards towards the side plate 2 is the locking edge 501, and the side of the locking recess 503 facing outwards towards the side plate 2 is the side plate edge 505. The side plate edge 505 of the corner plate 5 is bent outwards to form a mounting section 504, and the mounting section 504 is provided with a corner plate hole 502, which is used for mounting and fixing the circuit breaker from the outside of the side plate 2 during transportation.

[0033] When the insulating base 3 is installed and fixed, the straight top cover protrusions 102 on both sides of the top cover 1 pass through the top cover grooves 201 of the side plate 2, so that the top cover 1 is positioned on the side plate 2; the straight bottom plate protrusions 402 on both sides of the bottom plate 4 pass through the bottom plate grooves 205 of the side plate 2, so that the bottom plate 4 is positioned on the side plate 2; the base protrusions 301 on both sides of the insulating base 3 pass through the base grooves 203 of the side plate 2, so that the insulating base 3 is positioned on the side plate 2. At the same time, the top cover hole 101 on the top cover hole 101 is aligned with the upper mounting hole 202 on the side plate 2 and is fastened by fasteners; the bottom plate hole 401 on the bottom plate 4 is aligned with the lower mounting hole 204 on the side plate 2 and is fastened by fasteners, so that the side plate 2 is respectively attached and fastened to the top cover 1 and the bottom plate 4, and the side plate 2 is firmly attached to the insulating base 3. In this way, the straight positioning protrusions on the top cover 1, bottom plate 4, and insulating base 3 accurately penetrate the flat side plate 2, achieving precise positioning of the insulating base 3 and the side plate 2 without skewing. This avoids the risks of structural malfunctions caused by the positioning deviation resulting from the bending of the side plate and the bottom plate, which are used in traditional technologies.

[0034] Furthermore, during transportation, the drawer assembly is typically fixed to a wooden pallet beneath the circuit breaker. In the traditional method, screw holes are provided on the base plate of the bottom plate, which is then used to secure the circuit breaker to the wooden pallet. The circuit breaker body is then placed into the drawer assembly, thus securing the circuit breaker to the transport pallet. In this method, the mounting screws are built into the drawer assembly; to remove the circuit breaker, the customer must first remove the circuit breaker body and loosen the built-in screws. In the embodiment provided by this invention, the locking recess 503 on the corner plate 5 passes sequentially through the corner plate window 206 on the side plate 2 and the corner plate groove 403 on the bottom plate 4. The locking edge 501 engages with the bottom plate 4, and the side plate edge 505 engages with the side plate 2, connecting the side plate 2 and the bottom plate 4 together. The mounting section 504 for fixing the circuit breaker is located outside the drawer assembly. In this way, whether the circuit breaker is being transported or the customer needs to remove it, they only need to loosen the corner plate outside the drawer device without having to remove the circuit breaker body first, making the operation simple and convenient.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An insulation base fixing structure, comprising a top cover (1), a side plate (2), an insulation base (3), a bottom plate (4), and a corner plate (5); the top cover (1) is located on the upper part of the insulation base (3); the bottom plate (4) is located on the lower part of the insulation base (3); the side plate (2) has two parts, which are respectively located on the left and right sides of the insulation base (3); the top cover (1), the insulation base (3), and the bottom plate (4) are fixedly installed in the two side plates (2); characterized in that the top cover (1) is provided with flat top cover protrusions (102) on both sides, and the top cover (1) is positioned on the side plate (2) through the top cover protrusions (102); the bottom plate (4) is provided with flat bottom plate protrusions (402) on both sides, and the bottom plate (4) is positioned on the side plate (2) through the bottom plate protrusions (402); the insulation base (3) is provided with base protrusions (301) on both sides, and the insulation base (3) is positioned on the side plate (2) through the base protrusions (301); the side plate (2) is tightly fastened with the top cover (1) and the bottom plate (4) respectively, so that the side plate (2) is tightly fastened with the insulation base (3).

2. The insulating base fixing structure according to claim 1, wherein the side plate (2) is a flat plate; the side plate (2) is provided with at least one top cover groove (201) and at least one upper mounting hole (202) near the top cover (1); the side plate (2) is provided with at least one base groove (203) near the insulation base (3); the side plate (2) is provided with at least one lower mounting hole (204), at least one bottom plate groove (205), and at least one corner plate window (206) near the bottom plate (4).

3. The insulating base fixing structure according to claim 1, wherein the top cover (1) is provided with a cover plate (103) on the top, the cover plate (103) is bent to form cover plate bent edges (107) on both sides, and the cover plate bent edges (107) are provided with top cover holes (101); the front end of the cover plate (103) is bent downward to form a terminal plate (104), the left and right sides of the terminal plate (104) are provided with flat top cover protrusions (102), the top cover protrusions (102) are coupled with the top cover grooves (201) of the side plate (2) oppositely, and the top cover protrusions (102) can be inserted into the top cover grooves (201); the rear end of the cover plate (103) is bent downward to form a ventilation plate (105), the ventilation plate (105) is bent to form ventilation plate bent edges (106) on both sides, and the ventilation plate bent edges (106) are provided with top cover holes (101); the top cover holes (101) are coupled with the upper mounting holes (202) of the side plate (2) oppositely.

4. The insulating base fixing structure according to claim 1, wherein the bottom plate (4) is provided with a base plate (404) on the bottom, the left and right sides of the base plate (404) are provided with flat bottom plate protrusions (402), the flat bottom plate protrusions (402) are coupled with the bottom plate grooves (205) of the side plate (2) oppositely, and the bottom plate protrusions (402) can be inserted into the bottom plate grooves (205); the left and right sides of the base plate (404) are bent upward to form mounting edges (405), the mounting edges are provided with at least one bottom plate hole (401) and at least one corner plate groove (403), the bottom plate hole (401) is coupled with the lower mounting hole (204) of the side plate (2) oppositely, and the corner plate groove (403) is coupled with the corner plate window (206) of the side plate (2) oppositely.

5. The insulating base fixing structure according to claim 1, wherein The insulating base (3) is provided with a base protrusion (301) on both sides, which is coupled to the base groove (203) of the side plate (2) oppositely, and the base protrusion (301) can be inserted into the base groove (203).

6. The insulating base fixing structure according to claim 1, wherein The corner plate (5) is arranged on the outer side of the side plate (2), and the corner plate (5) is bent upwards towards the side plate (2) to form a lock recess (503); The lock recess (503) is provided with a lock edge (501) on the inner side of the side plate (2), and a side plate edge (505) on the outer side of the side plate (2), and the lock recess (503) sequentially passes through the corner plate window (206) on the side plate (2) and the corner plate groove (403) on the bottom plate (4), so that the side plate (2) and the bottom plate (4) are buckled together; The side plate edge (505) of the corner plate (5) is bent outwards to form a mounting section (504), and the mounting section (504) is provided with a corner plate hole (502).

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