Sealing structure and intelligent controller

Abstract

The utility model discloses a sealing structure and an intelligent controller, comprising a first housing, a second housing and a fastening assembly used for fastening the first housing and the second housing, a gasket part and a waterproof member are respectively arranged between the first housing and the second housing; the waterproof piece has compressibility and is used for waterproof sealing between the first shell and the second shell, and when the fastening assembly is screwed, the height of a gap between the first shell and the second shell is limited by the gasket part so that the compression amount of the waterproof piece can be adjusted. In this way, it can be guaranteed that the height of the gap between the first shell and the second shell is limited within a certain safety range by the gasket part located between the first shell and the second shell, and then the waterproof piece is prevented from being excessively compacted or pressed, so that the durability and sealing reliability of the waterproof piece are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent controllers, in particular to a sealing structure and an intelligent controller. Background Art

[0002] As an important component of electrical systems, the reliability and safety of intelligent controllers are subject to strict requirements, especially when intelligent controller products containing power modules are used in open or semi-open environments. It is necessary to ensure the stability and protection of the product assembly to prevent functional failure of the product due to sealing failure and leakage during use, and to ensure the insulation of the product to prevent safety accidents caused by leakage.

[0003] A waterproof foam is generally provided between the lower shell of a traditional intelligent controller and the upper shell containing a power module, and is directly locked by screw locking. The screw locking is used to apply torque or pre-tightening force to compact or press the waterproof foam, thereby achieving sealing and waterproofing. However, this method will cause the waterproof foam to be over-pressurized and lose its resilience. If the waterproof foam is in an over-pressure working state for a long time, it is easy to accelerate its aging, and eventually cause sealing failure. Utility Model Content

[0004] To this end, in order to solve the above-mentioned problem, the utility model provides a sealing structure and an intelligent controller, which can ensure that the gap height between the first shell and the second shell is limited to a certain safety range by the gasket part located between the first shell and the second shell, thereby preventing the waterproof part from being over-compacted or tightened, so as to ensure the durability and sealing reliability of the waterproof part.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] The utility model provides a sealing structure, including a first shell, a second shell and a fastening assembly for fastening the first shell and the second shell, a gasket portion and a waterproof component are respectively arranged between the first shell and the second shell, the waterproof component is compressible and is used for waterproof sealing between the first shell and the second shell; when the fastening assembly is tightened, the gap height between the first shell and the second shell is limited by the gasket portion to form an adjustment setting for the compression amount of the waterproof component.

[0007] Furthermore, the fastening assembly is provided with an insulating bushing unit for insulation, a power module is arranged in the first shell, and the first shell and the second shell are both provided with mounting through holes matching the fastening assembly; the insulating bushing unit is arranged in the mounting through hole of the first shell, and the insulating bushing unit includes a gasket portion located between the first shell and the second shell.

[0008] Furthermore, the insulating bushing unit includes a first insulating bushing and a second insulating bushing, the first insulating bushing and the second insulating bushing both have a flange portion extending radially outward, the first insulating bushing and the second insulating bushing are respectively arranged in the mounting through hole of the first shell, and the flange portion of the first insulating bushing abuts against the hole wall of the mounting through hole of the first shell facing outward, and the flange portion of the second insulating bushing abuts against the hole wall of the mounting through hole of the first shell facing the second shell; the flange portion of the second insulating bushing is the gasket portion.

[0009] Furthermore, the fastening assembly is a screw lock.

[0010] Furthermore, the screw lock includes a nut and a screw, and the screw is sequentially inserted into the first shell, the waterproof component and the second shell, and is threadedly connected with the nut to form a fastening arrangement with adjustable preload force.

[0011] Furthermore, the nut is a rivet nut.

[0012] Furthermore, the gasket portion and the waterproof component are arranged in the same layer.

[0013] Furthermore, the waterproof component is waterproof foam.

[0014] The utility model provides an intelligent controller, which at least comprises the above-mentioned sealing structure.

[0015] The technical solution provided by the utility model has the following beneficial effects:

[0016] When tightening the fastening assembly, the gasket part and the waterproof part are arranged to be in the same layer and the gap height between the first shell and the second shell is limited within a certain safety range by the gasket part located between the first shell and the second shell, so as to adjust the compression amount of the waterproof part to a certain reasonable compression range, thereby preventing the compressible waterproof part from being over-compacted or compressed, so as to ensure the durability and sealing reliability of the waterproof part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a cross-sectional view of the sealing structure in Embodiment 1;

[0018] Figure 2 Shown Figure 1 A magnified schematic diagram of area A in the middle;

[0019] Figure 3 Shown is an exploded view of the sealing structure in Example 1;

[0020] Figure 4 The figure shows the appearance of the sealing structure in the first embodiment. DETAILED DESCRIPTION

[0021] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0023] Embodiment 1

[0024] Reference Figures 1 to 4 As shown, embodiment 1 provides a sealing structure, such as Figure 1 The sealing structure shown in the figure comprises a first shell 1, a second shell 2 and a fastening assembly for fastening the first shell 1 and the second shell 2. The first shell 1 and the second shell 2 are respectively provided with the same layer as shown in FIG. Figure 2 The gasket portion 51 and the waterproof component 3 shown, the waterproof component 3 is compressible and is used for waterproof sealing between the first shell 1 and the second shell 2. When the fastening assembly is tightened, the gap height between the first shell 1 and the second shell 2 is limited by the gasket portion 51 to form an adjustment setting for the compression amount of the waterproof component 3.

[0025] In this embodiment, the waterproof component 3 is waterproof foam, and the waterproof foam has a clearance hole for making way for the fastening component.

[0026] The fastening assembly is a screw lock, and the specific screw lock includes a nut 7 and a screw 6, and the specific nut 7 is a hexagonal rivet nut. The screw 6 is sequentially passed through the first shell 1, the waterproof part 3 and the second shell 2, and is threadedly connected with the nut 7 to form a fastening setting with adjustable preload force. Of course, the nut 7 can also be a flat head rivet nut, a countersunk rivet nut or an ordinary bolt.

[0027] First, based on the size requirements of the sealing structure of this embodiment, the compression ratio and corresponding compression thickness of the waterproof foam when ensuring sealing are calculated in advance, and then the thickness and compression strength of the corresponding gasket part 51 are designed to ensure that the actual compression amount of the waterproof foam when tightened is within a certain reasonable range.

[0028] When tightening the fastening assembly, the gasket portion 51 and the waterproof part 3 are arranged to be in the same layer and the gap height between the first shell 1 and the second shell 2 is limited to a certain safety range by the gasket portion 51 located between the first shell 1 and the second shell 2, so as to adjust the compression amount of the waterproof part 3 to a certain reasonable compression range, thereby preventing the compressible waterproof part 3 from being over-compacted or compressed, so as to ensure the durability and sealing reliability of the waterproof part 3.

[0029] Of course, in other embodiments, the nut 7 may not be needed, and the first shell 1 or the second shell 2 may only need to be provided with a screw hole with an internal thread, and cooperate with the screw 6 to achieve threaded connection, so that a fastening setting with adjustable preload force can also be achieved; in addition, the gasket part 51 and the waterproof part 3 may not be in the same layer, such as a stacked setting.

[0030] In another preferred embodiment, the fastening assembly is provided with an insulating bushing unit for insulation, a power module is arranged in the first shell 1, and the first shell 1 and the second shell 2 are both provided with mounting through holes for matching the fastening assembly, the insulating bushing unit is arranged in the mounting through holes of the first shell 1, and the insulating bushing unit includes a gasket portion 51 located between the first shell 1 and the second shell 2.

[0031] More specifically, Figure 2 and Figure 3 As shown, the insulating bushing unit includes a first insulating bushing 4 and a second insulating bushing 5, and the first insulating bushing 4 and the second insulating bushing 5 both have flange portions extending radially outward, and the first insulating bushing 4 and the second insulating bushing 5 are respectively arranged in the mounting through hole of the first shell 1, and the flange portion of the first insulating bushing 4 abuts against the upper hole wall 11 on the outward side of the mounting through hole of the first shell 1, and the flange portion of the second insulating bushing 5 abuts against the lower hole wall 12 on the side of the mounting through hole of the first shell 1 toward the second shell 2, and the flange portion of the second insulating bushing 5 is the gasket portion 51.

[0032] In a specific implementation, the first shell 1 and the second shell 2 are sequentially arranged up and down.

[0033] First, the hexagonal rivet nut is riveted and fixed to the mounting through hole of the second housing 2 by a rivet process, and the hexagonal rivet nut plays a role of stopping rotation to prevent the rivet stud from rotating when the screw is locked, thereby causing locking failure.

[0034] Next, the second insulating bushing 5 is inserted upward into the mounting hole of the first shell 1, and the flange portion of the second insulating bushing 5 abuts against the lower hole wall 12 at the bottom of the first shell 1, and the outer peripheral surface of the second insulating bushing 5 forms an interference fit with the inner hole wall of the mounting hole of the first shell 1 to ensure that the second insulating bushing 5 will not fall off during the assembly process.

[0035] Then, the first insulating bushing 4 is inserted downward into the mounting hole of the first shell 1, and the flange portion of the first insulating bushing 4 abuts against the upper hole wall 11 at the top of the first shell 1, and the outer peripheral surface of the first insulating bushing 4 forms a clearance fit with the inner hole wall of the mounting hole of the first shell 1 to facilitate subsequent installation.

[0036] After the installation holes of the first shell 1 and the second shell 2 are aligned one by one, the screws 6 are inserted in sequence and locked diagonally according to the torque required by the production regulations. Finally, check whether the waterproof foam is compressed too much. Figure 4 Overall installation shown.

[0037] The first insulating bushing 4 is installed between the screw 6 and the first housing 1 , which can form an insulating isolation between the first housing 1 and the screw 6 , and also prevent the first housing 1 containing the power module from being connected to the second housing 2 through the screw 6 .

[0038] The second insulating bushing 5 is installed between the first shell 1 and the second shell 2 installed with the nut 7, which can form an insulating isolation between the first shell 1 and the second shell 2. At the same time, the thickness of the flange part of the second insulating bushing 5 is preset in advance to adjust the gap distance or gap height between the first shell 1 and the second shell 2 to ensure that the actual compression amount of the waterproof foam meets the design requirements, thereby preventing the waterproof foam from being over-compacted or compressed.

[0039] In addition, the outer peripheral surface of the insulating bushing unit can also reduce the lateral clearance of the screw 6 during installation, so as to increase the accuracy of structural installation and the stability of the locking torque.

[0040] Therefore, the intelligent controller of this embodiment adopts a sealing structure composed of waterproof foam and double insulating bushings, and is locked by screws 6 to achieve the insulation and sealing requirements between the first shell 1 and the second shell 2, and also meet the waterproof and dustproof installation requirements of the IP67 standard, while having stability, no position restriction and easy operation.

[0041] Embodiment 2

[0042] Embodiment 2 provides an intelligent controller, which at least includes the sealing structure of embodiment 1.

[0043] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A sealing structure, comprising a first shell, a second shell and a fastening assembly for fastening the first shell and the second shell, characterized in that: A gasket portion and a waterproof member are respectively provided between the first shell and the second shell, wherein the waterproof member is compressible and is used for waterproof sealing between the first shell and the second shell; When the fastening assembly is tightened, the height of the gap between the first shell and the second shell is limited by the gasket portion to form an adjustment setting for the compression amount of the waterproof component.

2. The sealing structure according to claim 1, characterized in that: The fastening assembly is provided with an insulating bushing unit for insulation, a power module is arranged in the first shell, and the first shell and the second shell are both provided with mounting through holes matching the fastening assembly; the insulating bushing unit is arranged in the mounting through hole of the first shell, and the insulating bushing unit includes a gasket portion located between the first shell and the second shell.

3. The sealing structure according to claim 2, characterized in that: The insulating bushing unit includes a first insulating bushing and a second insulating bushing, each of the first insulating bushing and the second insulating bushing has a flange portion extending radially outward, the first insulating bushing and the second insulating bushing are respectively arranged in the mounting through hole of the first shell, and the flange portion of the first insulating bushing abuts against the hole wall of the mounting through hole of the first shell facing outward, and the flange portion of the second insulating bushing abuts against the hole wall of the mounting through hole of the first shell facing the second shell; the flange portion of the second insulating bushing is the gasket portion.

4. The sealing structure according to any one of claims 1 to 3, characterized in that: The fastening assembly is a screw lock.

5. The sealing structure according to claim 4, characterized in that: The screw lock comprises a nut and a screw, wherein the screw is sequentially passed through the first shell, the waterproof component and the second shell, and is threadedly connected with the nut to form a fastening arrangement with adjustable pre-tightening force.

6. The sealing structure according to claim 5, characterized in that: The nut is a pull rivet nut.

7. The sealing structure according to any one of claims 1 to 3, characterized in that: The gasket portion and the waterproof component are arranged in the same layer.

8. The sealing structure according to any one of claims 1 to 3, characterized in that: The waterproof component is waterproof foam.

9. An intelligent controller, characterized in that: At least comprises the sealing structure described in any one of claims 1-8.

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