Fireproof cabinet door assembly and fireproof electrical cabinet

Abstract

The utility model provides a fireproof cabinet door assembly and a fireproof electrical cabinet, the fireproof cabinet door assembly comprises a fireproof cabinet door, a metal clamping frame, fireproof glass and a sealing assembly, the fireproof cabinet door is provided with an observation window, and the sealing assembly comprises a first fireproof expansion sealing rubber strip and a second fireproof expansion sealing rubber strip. A first fireproof expansion sealing rubber strip, a metal clamping frame, a second fireproof expansion sealing rubber strip and fireproof glass are sequentially embedded along the inner side wall of the observation window; a wedge-shaped part is formed on the face, facing the inner side wall of the observation window, of the first fireproof expansion sealing rubber strip. According to the fireproof cabinet door assembly, the probability of scratching of the metal clamping frame, the side wall of the mounting groove and the fireproof glass during mounting can be effectively reduced, and the fireproof cabinet door assembly is good in sealing and heat insulation performance, convenient to disassemble and assemble by a user, simple to operate, capable of replacing independently damaged accessories and low in maintenance cost.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power equipment, and particularly to a fireproof cabinet door assembly and a fireproof electrical cabinet Background Art

[0002] Since a plurality of electronic components, such as electric energy meters, temperature sensors, etc., are arranged in the electrical cabinet, and in order to facilitate the user to observe the readings of the electric energy meters in the electrical cabinet or the temperature in the electrical cabinet, a transparent glass observation window is usually arranged on the fireproof cabinet door so that the user can observe the specific operation conditions in the power distribution cabinet

[0003] For example, Chinese Document No. CN 214754813 U discloses a low-voltage switch cabinet with high visual safety, and specifically discloses that a fireproof glass (4) is fixedly connected to the outer surface of the other side of the low-voltage switch cabinet (1), and by setting a movable baffle, a fixed connecting cylinder, a first limiting column and a second limiting column, the internal movable baffle can be slid upward in the baffle chute by manually holding the manual push handle and pushing upward, so that the inside can be directly observed through the fireproof glass, which is simple, convenient and does not occupy space

[0004] However, since the fireproof glass is fixedly connected to the other side of the low-voltage switch cabinet, it is not conducive to the user to disassemble, install and replace. In order to solve the above technical problems, Chinese Document No. CN103326252B discloses a switch fireproof cabinet door with a glass window, which uses the lever force generated by a simple folding angle structure of a pressing plate, and uses the lever principle to press the glass into the rectangular frame bar assembly on the back of the switch fireproof cabinet door panel; the operation is convenient and it is convenient for the user to disassemble, install and replace

[0005] However, from the above-mentioned switch fireproof cabinet door with a glass window Figure 2 it can be seen that the base plate 21 of the elastic pressing plate and the U-shaped positioning frame bar need to be detachably connected together by self-tapping screws 1, resulting in the need for auxiliary tools to complete the fixation of the base plate and the U-shaped positioning frame bar during installation, and there is a problem of complex installation Utility Model Content

[0006] The purpose of the present disclosure is to overcome the deficiencies in the prior art, and to provide a fireproof cabinet door assembly and a fireproof electrical cabinet that can effectively reduce the scratching probability of the metal clamping frame, the side wall of the installation groove and the fireproof glass during installation, have good sealing and heat insulation performance, are convenient for the user to disassemble and install, have simple operation, can replace damaged parts separately, and have low maintenance costs

[0007] The purpose of the present disclosure is achieved by the following technical solutions

[0008] A fireproof cabinet door assembly includes a fireproof cabinet door, a metal clamping frame, a fireproof glass and a sealing assembly. The fireproof cabinet door is provided with an observation window

[0009] The sealing assembly includes a first fireproof expansion sealing strip and a second fireproof expansion sealing strip. The first fireproof expansion sealing strip, the metal clamping frame, the second fireproof expansion sealing strip and the fireproof glass are sequentially embedded along the inner side wall of the observation window. Wherein, a wedge-shaped portion is formed on one side of the first fireproof expansion sealing strip facing the inner side wall of the observation window.

[0010] In one embodiment, the width of the wedge-shaped portion gradually decreases in sequence from the end close to the metal clamping frame to the end far from the metal clamping frame.

[0011] In one embodiment, an arc portion is formed at the end of the wedge-shaped portion far from the metal clamping frame.

[0012] In one embodiment, the first fireproof expansion sealing strip further includes a plurality of first deformation protrusions, and the first deformation protrusions are sequentially and spaced apart along the length direction of the arc portion.

[0013] In one embodiment, a clamping groove is formed in the second fireproof expansion sealing strip, and the fireproof glass is clamped in the clamping groove.

[0014] In one embodiment, the clamping groove is a U-shaped groove; and / or,

[0015] A plurality of second deformation protrusions are arranged on the clamping groove, and the second deformation protrusions are sequentially and spaced apart along the length direction of the clamping groove.

[0016] In one embodiment, the number of the first fireproof expansion sealing strips is at least two, and the two first fireproof expansion sealing strips are connected end to end to form a first closed fireproof expansion sealing ring, and the first closed fireproof expansion sealing ring is sleeved on the outer peripheral wall of the metal clamping frame.

[0017] In one embodiment, the number of the second fireproof expansion sealing strips is at least two, and the two second fireproof expansion sealing strips are connected end to end to form a second closed fireproof expansion sealing ring, and the second closed fireproof expansion sealing ring is clamped on the inner peripheral wall of the metal clamping frame.

[0018] In one embodiment, the first closed fireproof expansion sealing ring is an integrally formed structure; and / or,

[0019] The first surface of the first fireproof expansion sealing strip is embedded in the outer peripheral wall of the metal clamping frame, and the second surface of the first fireproof expansion sealing strip is embedded in the installation groove of the observation window; and / or,

[0020] The first side of the second fireproof expanding sealant strip is embedded in the inner peripheral wall of the metal clamping frame, and the second side of the second fireproof expanding sealant strip is embedded with the fireproof glass.

[0021] A fireproof electrical cabinet includes the fireproof cabinet door assembly described in any one of the above embodiments.

[0022] Compared with the prior art, the present disclosure has at least the following advantages:

[0023] 1) Since the first fireproof expanding sealant strip, the metal clamping frame, the second fireproof expanding sealant strip and the fireproof glass are sequentially embedded along the inner side wall of the observation window, a detachable fitting arrangement is realized between the fireproof cabinet door, the first fireproof expanding sealant strip, the metal clamping frame, the second fireproof expanding sealant strip and the fireproof glass. At the same time, with the use of the wedge-shaped portion formed on the side of the first fireproof expanding sealant strip facing the inner side wall of the observation window, it is ensured that the user can complete the installation of the fireproof cabinet door, the metal clamping frame and the fireproof glass without auxiliary tools. The operation is not only simple, but also convenient for disassembly, replacement of individual damaged parts, thereby reducing the maintenance cost.

[0024] 2) Since the first fireproof expanding sealant strip, the metal clamping frame, the second fireproof expanding sealant strip and the fireproof glass are sequentially embedded along the inner side wall of the observation window, the first fireproof expanding sealant strip and the second fireproof expanding sealant strip can be located on the outer peripheral wall and the inner side wall of the metal clamping frame. The hardness of the fireproof cabinet door and the fireproof glass is relatively high. The added first fireproof expanding sealant strip and the second fireproof expanding sealant strip can, on the one hand, reduce the wear between the fireproof cabinet door, the fireproof glass and the metal clamping frame during installation, thereby reducing the scratching probability of the fireproof cabinet door, the fireproof glass and the metal clamping frame; on the other hand, since the first fireproof expanding sealant strip and the second fireproof expanding sealant strip have better sealing and heat insulation performance compared with the traditional elastic rubber foam sealant strip, that is, the first fireproof expanding sealant strip and the second fireproof expanding sealant strip will expand when encountering an open flame or a higher temperature, which preferably ensures the connection strength between the fireproof cabinet door, the fireproof glass and the metal clamping frame, effectively avoiding the problem that the traditional elastic rubber foam sealant strip is prone to sealing failure under an open flame or a higher temperature, so as to well ensure the normal operation of the electrical cabinet. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1A schematic structural view in one direction of a fireproof cabinet door assembly according to an embodiment of the present utility model;

[0027] Figure 2 is Figure 1 a partially enlarged view shown at A in

[0028] Figure 3 a sectional view in one direction of a fireproof cabinet door assembly according to another embodiment of the present utility model;

[0029] Figure 4 is Figure 3 a partially enlarged view shown at B in

[0030] Reference numerals: 10, fireproof cabinet door assembly; 100, fireproof cabinet door; 110, observation window; 120, installation groove; 200, metal card frame; 210, limiting member; 300, fireproof glass; 400, sealing assembly; 410, first fireproof expansion sealing strip; 411, wedge portion; 4111, arc portion; 412, first deformation protrusion; 420, second fireproof expansion sealing strip; 421, engaging groove; 422, second deformation protrusion; 423, positioning member. Detailed implementation manners

[0031] For the convenience of understanding the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure content of the present disclosure understood more thoroughly and comprehensively.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure belongs. The terms used in the specification of the present disclosure herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] To better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure will be further described in detail below with specific embodiments:

[0035] Please refer to Figures 1 to 3 , for a fireproof cabinet door assembly 10 of an embodiment, including a fireproof cabinet door 100, a metal card frame 200, a fireproof glass 300 and a sealing assembly 400. The fireproof cabinet door 100 is provided with an observation window 110. The sealing assembly 400 includes a first fireproof expansion sealing strip 410 and a second fireproof expansion sealing strip 420. The first fireproof expansion sealing strip 410, the metal card frame 200, the second fireproof expansion sealing strip 420 and the fireproof glass 300 are sequentially embedded along the inner side wall of the observation window 110. Wherein, a wedge-shaped portion 411 is formed on one side of the first fireproof expansion sealing strip 410 facing the inner side wall of the observation window 110.

[0036] It can be understood that since the fireproof cabinet door 100 is provided with the observation window 110, it is convenient to accommodate the first fireproof expansion sealing strip 410, the metal card frame 200, the second fireproof expansion sealing strip 420 and the fireproof glass 300. Since the first fireproof expansion sealing strip 410, the metal card frame 200, the second fireproof expansion sealing strip 420 and the fireproof glass 300 are sequentially embedded along the inner side wall of the observation window 110, a detachable fitting arrangement between the fireproof cabinet door 100, the first fireproof expansion sealing strip 410, the metal card frame 200, the second fireproof expansion sealing strip 420 and the fireproof glass 300 is realized. At the same time, with the use of the wedge-shaped portion 411 formed on one side of the first fireproof expansion sealing strip 410 facing the inner side wall of the observation window 110, it is ensured that the user can complete the installation of the fireproof cabinet door 100, the metal card frame 200 and the fireproof glass 300 without auxiliary tools. It is not only simple to operate, but also convenient for disassembly and replacement of individually damaged parts, thereby reducing the maintenance cost.

[0037] Furthermore, since the first fireproof expansion sealant strip 410, the metal clamping frame 200, the second fireproof expansion sealant strip 420 and the fireproof glass 300 are sequentially embedded along the inner sidewall of the observation window 110, the first fireproof expansion sealant strip 410 and the second fireproof expansion sealant strip 420 can be located on the outer peripheral wall and the inner sidewall of the metal clamping frame 200. The hardness of the fireproof cabinet door 100 and the fireproof glass 300 is relatively high. The added first fireproof expansion sealant strip 410 and second fireproof expansion sealant strip 420 can, on the one hand, reduce the wear between the fireproof cabinet door 100, the fireproof glass 300 and the metal clamping frame 200 during installation, thereby reducing the scratching probability of the fireproof cabinet door 100, the fireproof glass 300 and the metal clamping frame 200. On the other hand, since the first fireproof expansion sealant strip 410 and the second fireproof expansion sealant strip 420 have better sealing and heat insulation performance compared with the traditional elastic rubber foam sealant strip, that is, the first fireproof expansion sealant strip 410 and the second fireproof expansion sealant strip 420 will expand when encountering an open flame or a higher temperature, which better ensures the connection strength between the fireproof cabinet door 100, the fireproof glass 300 and the metal clamping frame 200, effectively avoiding the problem that the traditional elastic rubber foam sealant strip is prone to seal failure under an open flame or a higher temperature, so as to well ensure the normal operation of the electrical cabinet.

[0038] It is worth mentioning that due to the relatively high structural strength of the metal clamping frame 200, the metal clamping frame 200 can provide relatively stable support for the fireproof glass 300, better ensuring the reliability of the connection between the fireproof glass 300 and the fireproof cabinet door 100.

[0039] It should be noted that the principle that the first fireproof expansion sealant strip 410 and the second fireproof expansion sealant strip 420 will expand when encountering an open flame or a higher temperature belongs to the prior art and is not within the scope of protection of the present disclosure. The present disclosure only protects the connection relationship between the first fireproof expansion sealant strip 410, the second fireproof expansion sealant strip 420, the metal clamping frame 200 and the fireproof glass 300.

[0040] Please refer to Figure 2 and Figure 4, in one embodiment, the width of the wedge portion 411 gradually decreases from the end close to the metal card frame 200 to the end away from the metal card frame 200, so as to ensure that the width of the end of the wedge portion 411 connected to the metal card frame 200 is larger, thereby ensuring the reliability of the connection between the wedge portion 411 and the metal card frame 200; while the width of the other end of the wedge portion 411 not connected to the metal card frame 200 is smaller, so as to ensure that the user can smoothly snap the first fireproof expansion sealing strip 410 into the inner side wall of the observation window 110. In this way, on the premise of ensuring the reliable connection between the first fireproof expansion sealing strip 410 and the inner side wall of the observation window 110, it also ensures that the user is not prone to jamming during the installation process.

[0041] Specifically, please refer to Figure 3 and Figure 4 , in one embodiment, an installation groove 120 is formed on the inner side wall of the observation window 110, the wedge portion 411 is adapted to the installation groove 120, and the wedge portion 411 is snap-fitted in the installation groove 120, realizing the fitting setting of the first fireproof expansion sealing strip 410 and the installation groove 120.

[0042] Please refer to Figure 2 and Figure 4 , in one embodiment, an arc portion 4111 is formed at the end of the wedge portion 411 away from the metal card frame 200. Since the arc portion 4111 can reduce the friction area with the inner wall of the installation groove 120, it is beneficial for the user to smoothly snap the wedge portion 411 into the installation groove 120.

[0043] In a preferred embodiment, the arc portion 4111 is an arc concave portion.

[0044] It can be understood that although the added wedge portion 411 is beneficial for the user to install the first fireproof expansion sealing strip 410, if the weight of the fireproof glass 300 or the metal door frame is too heavy, the first fireproof expansion sealing strip 410 is likely to fall off. Therefore, please refer to Figure 3 and Figure 4 , in one embodiment, the first fireproof expansion sealing strip 410 further includes a plurality of first deformation protrusions 412, and the first deformation protrusions 412 are sequentially and spaced apart along the length direction of the arc portion 4111, so that the plurality of first deformation protrusions 412 will deform under the action of an external force for the convenience of the user to disassemble and assemble. When the external force disappears, the plurality of first deformation protrusions 412 will return to their original states, so that the plurality of first deformation protrusions 412 can well fill the installation groove 120, thereby improving the connection strength between the first fireproof expansion sealing strip 410 and the inner wall of the installation groove 120, and effectively avoiding the problem that the first fireproof expansion sealing strip 410 falls off due to the excessive weight of the fireproof glass 300 or the metal door frame.

[0045] In one embodiment, the first deformation protrusion 412 is disposed in the arc-shaped recessed portion. The first deformation protrusion 412 is a hemispherical first deformation protrusion 412, and the hemispherical first deformation protrusion 412 has an arc surface. In this way, it is convenient for the user to disassemble and assemble, so as to ensure that the user can disassemble and assemble the first fireproof expansion seal strip 410 more smoothly, thereby reducing the difficulty of disassembly, assembly or replacement.

[0046] Please refer to Figure 4 , in one embodiment, a clamping groove 421 is formed in the second fireproof expansion seal strip 420, and the fireproof glass 300 is clamped and arranged in the clamping groove 421 to realize the fitting arrangement of the second fireproof expansion seal strip 420 and the fireproof glass 300, thereby facilitating the user to disassemble, assemble or replace.

[0047] Please refer to Figure 4 , in one embodiment, the clamping groove 421 is a U-shaped groove; since the U-shaped groove can achieve a more comprehensive covering of the fireproof glass 300, effectively avoiding the phenomenon that the fireproof glass 300 is easily scratched during disassembly and assembly.

[0048] It can be understood that if the weight of the fireproof glass 300 is too heavy, the problem that the second fireproof expansion seal strip 420 is easily detached will occur. Therefore, please refer to Figure 3 and Figure 4 , in one embodiment, the clamping groove 421 is provided with a plurality of second deformation protrusions 422, and the second deformation protrusions 422 are sequentially and spaced apart along the length direction of the clamping groove 421. The added plurality of second deformation protrusions 422 can improve the connection strength between the fireproof glass 300 and the second fireproof expansion seal strip 420, effectively avoiding the problem that the second fireproof expansion seal strip 420 is detached due to the excessive weight of the fireproof glass 300.

[0049] In one embodiment, the number of the first fireproof expansion seal strips 410 is at least two, and the two first fireproof expansion seal strips 410 are connected end to end to form a first closed fireproof expansion sealing ring. The first closed fireproof expansion sealing ring is sleeved on the outer peripheral wall of the metal clamping frame 200, so that the outer peripheral wall of the metal clamping frame 200 is provided with the first fireproof expansion seal strip 410, thereby improving the connection strength between the first closed fireproof expansion sealing ring and the metal clamping frame 200, and further better ensuring the connection strength between the metal clamping frame 200 and the inner side wall of the installation groove 120, effectively avoiding the problem that the metal clamping frame 200 or the fireproof glass 300 is easily detached.

[0050] Similarly, in one of the embodiments, the number of the second fireproof expansion sealing strips 420 is at least two, and the two second fireproof expansion sealing strips 420 are connected end to end to form a second closed fireproof expansion sealing ring, and the second closed fireproof expansion sealing ring is clamped on the inner peripheral wall of the metal clamping frame 200 to improve the connection strength between the metal clamping frame 200 and the fireproof glass 300, and effectively avoid the problem that the metal clamping frame 200 or the fireproof glass 300 is likely to fall off.

[0051] In one of the embodiments, the first closed fireproof expansion sealing ring is an integrally formed structure to ensure that the structure strength of the first closed fireproof expansion sealing ring formed by connecting the plurality of first fireproof expansion sealing strips 410 end to end is better, thereby improving the service life of the first closed fireproof expansion sealing ring.

[0052] In one of the embodiments, the first surface of the first fireproof expansion sealing strip 410 is embedded in the outer peripheral wall of the metal clamping frame 200, and the second surface of the first fireproof expansion sealing strip 410 is embedded in the installation groove 120 of the observation window 110; to achieve the fitting arrangement between the first fireproof expansion sealing strip 410 and the inner side wall of the installation groove 120, and the fitting arrangement between the metal clamping frame 200 and the first fireproof expansion sealing strip 410, thereby facilitating disassembly, assembly or replacement by the user.

[0053] Specifically, in one of the embodiments, a positioning groove is formed on the first surface of the first fireproof expansion sealing strip 410, a limiting member 210 is formed on the outer peripheral wall of the metal clamping frame 200, and the limiting member 210 is embedded in the positioning groove to achieve the fitting arrangement between the metal clamping frame 200 and the first fireproof expansion sealing strip 410.

[0054] In one of the embodiments, the first surface of the second fireproof expansion sealing strip 420 is embedded in the inner peripheral wall of the metal clamping frame 200, and the second surface of the second fireproof expansion sealing strip 420 is embedded with the fireproof glass 300 to achieve the fitting arrangement between the second fireproof expansion sealing strip 420 and the metal clamping frame 200, and the fitting arrangement between the second fireproof expansion sealing strip 420 and the fireproof glass 300, thereby facilitating disassembly, assembly or replacement by the user.

[0055] Specifically, a positioning member 423 is formed on the outer peripheral wall of the second fireproof expansion sealing strip 420, a limiting groove is formed on the inner side wall of the metal clamping frame 200, and the positioning member 423 is embedded in the limiting groove to achieve the fitting arrangement between the metal clamping frame 200 and the second fireproof expansion sealing strip 420; a clamping groove 421 is formed in the second fireproof expansion sealing strip 420, and the fireproof glass 300 is fitted and arranged in the clamping groove 421 to achieve the fitting arrangement between the fireproof glass 300 and the second fireproof expansion sealing strip 420.

[0056] The present disclosure also provides a fireproof electrical cabinet, which includes the fireproof cabinet door assembly 10 described in any of the above embodiments. It can be understood that applying the fireproof cabinet door assembly 10 of the present disclosure in a fireproof electrical cabinet not only has simple operation, but also is convenient for disassembly, installation and replacement of individually damaged parts, thereby reducing the maintenance cost, and effectively avoiding the problem that the traditional elastic rubber foam sealing strip is prone to sealing failure under an open fire or at a relatively high temperature, so as to well ensure the normal operation of the electrical cabinet.

[0057] In one embodiment, the fireproof electrical cabinet includes a fireproof cabinet body and the fireproof cabinet door assembly 10. Since both the fireproof cabinet body and the fireproof cabinet door 100 are provided with fireproof coatings, and at the same time, in cooperation with the use of the fireproof glass 300 and the sealing assembly 400, the fireproof and heat insulation performance of the fireproof electrical cabinet is preferably improved, thereby better ensuring the normal operation of the electrical cabinet.

[0058] Compared with the prior art, the present disclosure has at least the following advantages:

[0059] 1) Since the first fireproof expansion sealing strip 410, the metal card frame 200, the second fireproof expansion sealing strip 420 and the fireproof glass 300 are sequentially embedded along the inner side wall of the observation window 110, a detachable fitting arrangement between the fireproof cabinet door 100, the first fireproof expansion sealing strip 410, the metal card frame 200, the second fireproof expansion sealing strip 420 and the fireproof glass 300 is realized. At the same time, in cooperation with the use of the wedge-shaped portion 411 formed on the surface of the first fireproof expansion sealing strip 410 facing the inner side wall of the observation window 110, it is ensured that the user can complete the installation of the fireproof cabinet door 100, the metal card frame 200 and the fireproof glass 300 without auxiliary tools, which not only has simple operation, but also is convenient for disassembly, installation and replacement of individually damaged parts, thereby reducing the maintenance cost.

[0060] 2) Since the first fireproof expansion seal strip 410, the metal card frame 200, the second fireproof expansion seal strip 420 and the fireproof glass 300 are sequentially embedded along the inner wall of the observation window 110, the first fireproof expansion seal strip 410 and the second fireproof expansion seal strip 420 can be located on the outer peripheral wall and the inner wall of the metal card frame 200. The hardness of the fireproof cabinet door 100 and the fireproof glass 300 is relatively high. The added first fireproof expansion seal strip 410 and second fireproof expansion seal strip 420 can, on the one hand, reduce the wear between the fireproof cabinet door 100, the fireproof glass 300 and the metal card frame 200 during installation, thereby reducing the scratching probability of the fireproof cabinet door 100, the fireproof glass 300 and the metal card frame 200. On the other hand, since the first fireproof expansion seal strip 410 and the second fireproof expansion seal strip 420 have better sealing and heat insulation performance compared with the traditional elastic rubber foam seal strip, that is, the first fireproof expansion seal strip 410 and the second fireproof expansion seal strip 420 will expand when encountering an open flame or a higher temperature, which better ensures the connection strength between the fireproof cabinet door 100, the fireproof glass 300 and the metal card frame 200, and effectively avoids the problem that the traditional elastic rubber foam seal strip is prone to seal failure under an open flame or a higher temperature, so as to well ensure the normal operation of the electrical cabinet.

[0061] The above embodiments only represent several implementation manners of the present disclosure. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the disclosed patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several deformations and improvements can still be made, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent shall be subject to the appended claims.

Claims

1. A fireproof cabinet door assembly, comprising a fireproof cabinet door, a metal clamping frame, fireproof glass and a sealing assembly. The fireproof cabinet door is provided with an observation window, and is characterized in that the sealing assembly includes a first fireproof expanding sealing strip and a second fireproof expanding sealing strip. The first fireproof expanding sealing strip, the metal clamping frame, the second fireproof expanding sealing strip and the fireproof glass are sequentially embedded along the inner side wall of the observation window; wherein, a wedge-shaped portion is formed on one surface of the first fireproof expanding sealing strip facing the inner side wall of the observation window.

2. The fireproof cabinet door assembly according to claim 1, wherein The width of the wedge-shaped portion gradually decreases from one end close to the metal clamping frame to the other end away from the metal clamping frame.

3. The fireproof cabinet door assembly according to claim 1, characterized in that, An arc portion is formed at the end of the wedge-shaped portion away from the metal clamping frame.

4. The fireproof cabinet door assembly according to claim 3, characterized in that, The first fireproof expanding sealing strip further includes a plurality of first deformation protrusions, and the first deformation protrusions are sequentially and spaced apart along the length direction of the arc portion.

5. The fireproof cabinet door assembly according to claim 1, wherein A clamping groove is formed in the second fireproof expanding sealing strip, and the fireproof glass is clamped and arranged in the clamping groove.

6. The fireproof cabinet door assembly according to claim 5, wherein The clamping groove is a U-shaped groove; and / or The clamping groove is provided with a plurality of second deformation protrusions, and the second deformation protrusions are sequentially and spaced apart along the length direction of the clamping groove.

7. The fireproof cabinet door assembly according to claim 1, wherein, The number of the first fireproof expanding sealing strips is at least two, and the two first fireproof expanding sealing strips are connected end to end to form a first closed fireproof expanding sealing ring, and the first closed fireproof expanding sealing ring is sleeved on the outer peripheral wall of the metal clamping frame.

8. The fireproof cabinet door assembly according to claim 1, characterized in that, The number of the second fireproof expanding sealing strips is at least two, and the two second fireproof expanding sealing strips are connected end to end to form a second closed fireproof expanding sealing ring, and the second closed fireproof expanding sealing ring is clamped on the inner peripheral wall of the metal clamping frame.

9. The fireproof cabinet door assembly according to claim 7, wherein, The first closed fireproof expanding sealing ring is an integrally formed structure; and / or The first surface of the first fireproof expanding sealing strip is embedded in the outer peripheral wall of the metal clamping frame, and the second surface of the first fireproof expanding sealing strip is embedded in the installation groove of the observation window; and / or The first surface of the second fireproof expanding sealing strip is embedded in the inner peripheral wall of the metal clamping frame, and the second surface of the second fireproof expanding sealing strip is embedded with the fireproof glass.

10. A fireproof electrical cabinet, characterized in that, A fireproof cabinet door assembly according to any one of claims 1-9 is included.

Images