Sealing device

Abstract

The present invention discloses a sealing device, comprising: a fence plate; a bottom plate welded to the bottom of the fence plate; a first elastic sealing strip accommodated in a receiving chamber defined by the fence plate; a second elastic sealing strip accommodated in the receiving chamber defined by the fence plate and located above the first elastic sealing strip; and a pressing plate arranged above the second elastic sealing strip for pressing the first and second elastic sealing strips downward. The rear sides of the fence plate and the bottom plate are welded to the housing of the control cabinet, and an opening corresponding to the cable inlet is formed on the front side wall of the fence plate, a row of cables extends into the cable inlet through the opening, and is clamped between the first elastic sealing strip and the second elastic sealing strip, and the first elastic sealing strip and the second elastic sealing strip are elastically deformed under the extrusion force applied by the pressing plate to wrap the cables and seal the cable inlet. In the present invention, the sealing device is small in size, easy to install, and can fix a row of cables at the same time.

Description

Technical Field

[0001] The invention relates to a sealing device, in particular to a sealing device for sealing a cable inlet on a housing of a control cabinet. Background Art

[0002] Electrical control cabinets, such as elevator control cabinets, usually need to be electrically connected to many cables. For electrical control cabinets with waterproof requirements, for example, electrical control cabinets with waterproof levels above IP54, it is necessary to seal the cable inlet on the housing of the electrical control cabinet. In the prior art, cable glands are usually used to fix the cables and seal the cable inlets. However, this type of cable gland sealing method takes up a lot of space, takes a long time to install, requires special tools, and can only fix a single cable. Summary of the invention

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the present invention, a sealing device is provided for sealing a cable inlet on a housing of a control cabinet. The sealing device comprises: a fence plate, comprising a left side wall, a right side wall and a front side wall; a bottom plate welded to the bottom of the fence plate to seal the bottom of the fence plate; a first elastic sealing strip accommodated in a receiving chamber defined by the fence plate; a second elastic sealing strip accommodated in the receiving chamber defined by the fence plate and located above the first elastic sealing strip; and a pressing plate arranged above the second elastic sealing strip for pressing the first elastic sealing strip and the second elastic sealing strip downward, the rear sides of the fence plate and the bottom plate being welded to the housing of the control cabinet, an opening corresponding to the cable inlet being formed on the front side wall of the fence plate, a row of cables extending into the cable inlet through the opening and being clamped between the first elastic sealing strip and the second elastic sealing strip, the first elastic sealing strip and the second elastic sealing strip being elastically deformed under the extrusion force applied by the pressing plate to wrap the cables and seal the cable inlet.

[0005] According to an exemplary embodiment of the present invention, a strip-shaped groove is formed on the top surface of the first elastic sealing strip, and the strip-shaped groove is close to the opening on the front side wall of the fence panel; the exposed internal wires on the connecting end of the cable are placed on the top surface of the first elastic sealing strip, and the unstripped portion of the outer covering on the connecting end of the cable is accommodated in the strip-shaped groove.

[0006] According to another exemplary embodiment of the present invention, the sealing device also includes two limit plates, which are respectively arranged on the inner sides of the left and right walls of the fence plate; the height of the limit plates is lower than the fence plate, and the two ends of the pressure plate are respectively supported on the top surfaces of the two limit plates so as to limit the pressure plate to a predetermined height position.

[0007] According to another exemplary embodiment of the present invention, two ends of each of the first elastic sealing strip and the second elastic sealing strip respectively abut against the inner side surfaces of the two limiting plates.

[0008] According to another exemplary embodiment of the present invention, the sealing device further comprises a threaded connector disposed at each end of the pressure plate, the threaded connector sequentially passing through the pressure plate, the second elastic sealing strip, the first elastic sealing strip and the base plate and being fastened to the base plate.

[0009] According to another exemplary embodiment of the present invention, the pressure plate is fixed to the fence board in a snap-fit ​​manner, or is fixed to the fence board by a threaded connection.

[0010] According to another exemplary embodiment of the present invention, a first slot hole allowing the threaded connector to pass through is formed at each end of the first elastic sealing strip; and a second slot hole allowing the threaded connector to pass through is formed at each end of the second elastic sealing strip.

[0011] According to another exemplary embodiment of the present invention, the base plate has an extension plate portion extending forward beyond the front side wall of the fence plate, and at least one row of holes is formed on the extension plate portion; the sealing device also includes a binding member, which passes through the holes on the extension plate portion and binds the cable to the extension plate portion.

[0012] According to another exemplary embodiment of the present invention, the first elastic sealing strip and the second elastic sealing strip are sponge sealing strips made of sponge, rubber sealing strips made of rubber, or silicone sealing strips made of silicone.

[0013] In the aforementioned various exemplary embodiments according to the present invention, the sealing device is small in size, easy to install, and can fix a row of cables at the same time.

[0014] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A schematic diagram showing a sealing device for sealing a cable inlet on a housing of a control cabinet according to an exemplary embodiment of the present invention, wherein the second elastic sealing strip and the pressure plate are not shown;

[0016] Figure 2 show Figure 1 A three-dimensional schematic diagram of a first elastic sealing strip of the sealing device shown;

[0017] Figure 3 A schematic diagram showing a sealing device for sealing a cable inlet on a housing of a control cabinet according to an exemplary embodiment of the present invention, wherein a second elastic sealing strip and a pressure plate are shown;

[0018] Figure 4 A cross-sectional view showing a sealing device for sealing a cable entry on a housing of a control cabinet according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0020] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0021] According to an overall technical concept of the present invention, a sealing device is provided for sealing a cable inlet on a housing of a control cabinet. The sealing device comprises: a fence plate, comprising a left side wall, a right side wall and a front side wall; a bottom plate welded to the bottom of the fence plate to seal the bottom of the fence plate; a first elastic sealing strip accommodated in a receiving chamber defined by the fence plate; a second elastic sealing strip accommodated in the receiving chamber defined by the fence plate and located above the first elastic sealing strip; and a pressing plate arranged above the second elastic sealing strip for pressing the first elastic sealing strip and the second elastic sealing strip downward, the rear sides of the fence plate and the bottom plate are welded to the housing of the control cabinet, an opening corresponding to the cable inlet is formed on the front side wall of the fence plate, a row of cables extend into the cable inlet through the opening and are clamped between the first elastic sealing strip and the second elastic sealing strip, the first elastic sealing strip and the second elastic sealing strip are elastically deformed under the extrusion force applied by the pressing plate to wrap the cables and seal the cable inlet.

[0022] Figure 1 A schematic diagram showing a sealing device for sealing a cable inlet on a housing of a control cabinet according to an exemplary embodiment of the present invention, wherein the second elastic sealing strip and the pressure plate are not shown.

[0023] like Figure 1 As shown, in the illustrated embodiment, the sealing device is used to fix a row of cables 1 on a housing 31 of a control cabinet 30 and to seal a cable entry 31 a on the housing 31 of the control cabinet 30 .

[0024] Figure 3 A schematic diagram showing a sealing device for sealing a cable inlet on a housing of a control cabinet according to an exemplary embodiment of the present invention, wherein a second elastic sealing strip and a pressure plate are shown; Figure 4 A cross-sectional view showing a sealing device for sealing a cable entry on a housing of a control cabinet according to an exemplary embodiment of the present invention.

[0025] like Figure 1 , Figure 3-4 As shown, in the illustrated embodiment, the sealing device mainly includes a fence plate 10, a bottom plate 20, a first elastic sealing strip 40, a second elastic sealing strip 60 and a pressing plate 70. The fence plate 10 includes a left side wall 11, a right side wall 12 and a front side wall 13. The bottom plate 20 is welded to the bottom of the fence plate 10 to seal the bottom of the fence plate 10. The first elastic sealing strip 40 is accommodated in the accommodation chamber defined by the fence plate 10. The second elastic sealing strip 60 is accommodated in the accommodation chamber defined by the fence plate 10 and is located above the first elastic sealing strip 40. The pressing plate 70 is arranged above the second elastic sealing strip 60, and is used to squeeze the first elastic sealing strip 40 and the second elastic sealing strip 60 downward.

[0026] like Figure 1 , Figure 3-4 As shown, in the illustrated embodiment, the rear sides of the fence plate 10 and the bottom plate 20 face the housing 31 of the control cabinet 30 and are welded to the housing 31 of the control cabinet 30. An opening 13a corresponding to the cable inlet 31a is formed on the front side wall 13 of the fence plate 10. A row of cables 1 can extend into the cable inlet 31a through the opening 13a on the front side wall 13 of the fence plate 10. Figure 4 It is clearly shown that a row of cables 1 is clamped between the first elastic sealing strip 40 and the second elastic sealing strip 60 .

[0027] like Figure 1 , Figure 3-4As shown, in the illustrated embodiment, the first elastic sealing strip 40 and the second elastic sealing strip 60 are elastically deformed under the extrusion force applied by the pressing plate 70 to wrap the cable 1 and seal the cable inlet 31a. In this way, a row of cables 1 can be fixed on the housing 31 of the control cabinet 30, and the cable inlet 31a on the housing 31 of the control cabinet 30 can be sealed.

[0028] Figure 2 show Figure 1 A three-dimensional schematic diagram of a first elastic sealing strip of the sealing device is shown.

[0029] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, a strip groove 40b is formed on the top surface 40a of the first elastic sealing strip 40. The strip groove 40b is close to the opening 13a on the front side wall 13 of the fence plate 10. The exposed inner wire 1a on the connection end of the cable 1 is placed on the top surface 40a of the first elastic sealing strip 40, and the portion 1b of the outer coating on the connection end of the cable 1 that is not stripped is accommodated in the strip groove 40b.

[0030] like Figure 1 , Figure 3-4 As shown, in the illustrated embodiment, the sealing device further includes two limit plates 50, which are respectively arranged on the inner sides of the left side wall 11 and the right side wall 12 of the fence plate 10. The height of the limit plates 50 is lower than the fence plate 10, and the two ends of the pressing plate 70 are respectively supported on the top surfaces of the two limit plates 50, so as to limit the pressing plate 70 to a predetermined height position. In this way, when the pressing plate 70 is pressed down to a position in contact with the top surface of the limit plates 50, it cannot move downward any further.

[0031] like Figure 1 , Figure 3-4 As shown, in the illustrated embodiment, both ends of each of the first elastic sealing strip 40 and the second elastic sealing strip 60 abut against the inner side surfaces of the two limiting plates 50 .

[0032] like Figure 1 , Figure 3-4 As shown, in the illustrated embodiment, the sealing device further includes a threaded connector 80, such as a screw or a bolt, disposed at each end of the pressing plate 70. The threaded connector 80 sequentially passes through the pressing plate 70, the second elastic sealing strip 60, the first elastic sealing strip 40 and the bottom plate 20 and is fastened to the bottom plate 20.

[0033] Please note that the present invention is not limited to the illustrated embodiment. For example, in another exemplary embodiment of the present invention, the pressure plate 70 can be fixed to the fence panel 10 in a snap-fit ​​manner, or can be fixed to the fence panel 10 by a threaded connector.

[0034] like Figure 1 , Figure 3-4 As shown, in the illustrated embodiment, a first slot 40c is formed at each end of the first elastic sealing strip 40 to allow the threaded connector 80 to pass through. A second slot 60c is formed at each end of the second elastic sealing strip 60 to allow the threaded connector 80 to pass through. At the same time, slots are formed on the pressing plate 70 and the bottom plate 20, respectively, to allow the threaded connector 80 to pass through.

[0035] like Figure 1 , Figure 3-4 As shown, in the illustrated embodiment, the bottom plate 20 has an extended plate portion 20a extending forward beyond the front side wall 13 of the fence plate 10. At least one row of holes 20b is formed on the extended plate portion 20a of the bottom plate 20. The sealing device further includes a binding member (not shown), such as a rope or a belt. The binding member passes through the holes 20b on the extended plate portion 20a and binds the cable 1 to the extended plate portion 20a.

[0036] like Figures 1 to 4 As shown, in the illustrated embodiment, the first elastic sealing strip 40 and the second elastic sealing strip 60 may be sponge sealing strips made of sponge, rubber sealing strips made of rubber, or silicone sealing strips made of silicone.

[0037] Those skilled in the art can understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in various embodiments can be freely combined without causing conflicts in structure or principle.

[0038] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

[0039] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined in the claims and their equivalents.

[0040] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element reference signs in the claims shall not be construed as limiting the scope of the present invention.

Claims

1. A sealing device for sealing a cable inlet (31a) on a housing (31) of a control cabinet (30), characterized in that: The sealing device comprises: A fence panel (10) comprising a left side wall (11), a right side wall (12) and a front side wall (13); A bottom plate (20) welded to the bottom of the fence plate (10) to seal the bottom of the fence plate (10); A first elastic sealing strip (40) is accommodated in a receiving chamber defined by the fence panel (10); a second elastic sealing strip (60) accommodated in a receiving chamber defined by the fence plate (10) and located above the first elastic sealing strip (40); and a pressing plate (70) disposed above the second elastic sealing strip (60) and used for pressing the first elastic sealing strip (40) and the second elastic sealing strip (60) downwards, The rear sides of the fence plate (10) and the bottom plate (20) are welded to the housing (31) of the control cabinet (30), and an opening (13a) corresponding to the cable inlet (31a) is formed on the front side wall (13) of the fence plate (10); a row of cables (1) extends into the cable inlet (31a) through the opening (13a) and is clamped between the first elastic sealing strip (40) and the second elastic sealing strip (60). The first elastic sealing strip (40) and the second elastic sealing strip (60) are elastically deformed under the extrusion force applied by the pressing plate (70) to wrap around the cable (1) and seal the cable entrance (31a).

2. The sealing device according to claim 1, characterized in that: A strip-shaped groove (40b) is formed on the top surface (40a) of the first elastic sealing strip (40), and the strip-shaped groove (40b) is close to the opening (13a) on the front side wall (13) of the fence board (10); The exposed internal conductor (1a) on the connection end of the cable (1) is placed on the top surface (40a) of the first elastic sealing strip (40), and the unstripped portion (1b) of the outer coating on the connection end of the cable (1) is accommodated in the strip-shaped groove (40b).

3. The sealing device according to claim 1, characterized in that: The sealing device further comprises two limit plates (50), wherein the two limit plates (50) are respectively arranged on the inner sides of the left side wall (11) and the right side wall (12) of the fence plate (10); The height of the limiting plate (50) is lower than that of the fence plate (10), and both ends of the pressing plate (70) are respectively supported on the top surfaces of the two limiting plates (50) so as to limit the pressing plate (70) to a predetermined height position.

4. The sealing device according to claim 3, characterized in that: Both ends of each of the first elastic sealing strip (40) and the second elastic sealing strip (60) respectively abut against the inner side surfaces of the two limiting plates (50).

5. The sealing device according to claim 1, characterized in that: The sealing device further comprises a threaded connector (80) arranged at each end of the pressing plate (70), wherein the threaded connector (80) passes through the pressing plate (70), the second elastic sealing strip (60), the first elastic sealing strip (40) and the bottom plate (20) in sequence and is fastened to the bottom plate (20).

6. The sealing device according to claim 1, characterized in that: The pressure plate (70) is fixed to the fence plate (10) in a snap-fit ​​manner, or is fixed to the fence plate (10) via a threaded connection.

7. The sealing device according to claim 5, characterized in that: A first slot (40c) is formed at each end of the first elastic sealing strip (40) to allow the threaded connection member (80) to pass through; A second slot hole (60c) is formed at each end of the second elastic sealing strip (60) to allow the threaded connection member (80) to pass through.

8. The sealing device according to claim 1, characterized in that: The bottom plate (20) has an extended plate portion (20a) extending forward beyond the front side wall (13) of the fence plate (10), and at least one row of holes (20b) is formed on the extended plate portion (20a); The sealing device further comprises a binding member, which passes through a hole (20b) on the extension plate portion (20a) and binds the cable (1) to the extension plate portion (20a).

9. The sealing device according to claim 1, characterized in that: The first elastic sealing strip (40) and the second elastic sealing strip (60) are sponge sealing strips made of sponge, rubber sealing strips made of rubber, or silicone sealing strips made of silicone.

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