Hinge structure for AE case

Abstract

The utility model relates to a hinge structure for an AE case, and belongs to the technical field of sheet metal case accessories. The hinge is composed of a hinge sleeve, a pressing rivet gasket and a hinge seat support assembly. Wherein the hinge sleeve is welded to the door plate through a cold extrusion forming technology, the pressing rivet gasket is integrated with the sealing gasket and the nut to improve the sealing performance, and the hinge base support achieves elastic positioning of the pin shaft through snap spring preassembling. According to the utility model, efficiency is improved by optimizing a welding mode, sealing is enhanced by a multi-stage anti-seepage structure, an assembling process is simplified by a pre-assembling process, and assembling precision is guaranteed by a pin shaft guiding design, so that not only are the strength and reliability of the hinge improved, but also the requirement of high IP grade is met, and the hinge is applicable to the field of sheet metal cases requiring high sealing performance and stable connection.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal chassis accessories, and in particular to a hinge structure for an AE chassis. Background Technology

[0002] Hinges, as an essential accessory connecting the chassis and the door panel, consist of four main parts: hinge bracket, pin, hinge sleeve, and locking washer. They are a very important node in the quality control of finished chassis products.

[0003] In related technologies, the hinge bracket and gasket are clamped and locked onto the chassis from the outside to the inside; the hinge sleeve is welded to the inner edge of the door panel, and the chassis and door panel are connected as a whole by a pin to complete the assembly. However, the existing hinge structure still has the following problems:

[0004] First, the hinge sleeve has an open structure, which means that when it is welded to the chassis door panel, multiple argon arc spot welding points are required on both sides of the opening, which is inefficient and there is room for improvement in strength and reliability.

[0005] Secondly, the pin shaft is an integral structure, which means that during assembly, there is a lot of resistance when passing through the long pin hole and the hinge sleeve that has been welded to the door panel. It is necessary to use auxiliary tools to tap it so that the slots at both ends of the pin shaft are in the right position, and then the retaining ring is inserted into the slot. It requires the assembly of multiple parts in a scattered manner, which is not smooth and the efficiency is extremely low.

[0006] Third, the gasket has a simple shape and structure. For example, when it is installed on the enclosure, the locking combination structure composed of countersunk screws, countersunk holes, enclosure through holes and gasket screw holes cannot pass the water spray test, which means that the enclosure can only be used indoors and has a limited range of applications. Utility Model Content

[0007] In response to the shortcomings of the existing production technology, the applicant provides a hinge structure for the AE chassis, thereby improving the strength and reliability of the hinge sleeve after welding to the door panel, increasing assembly efficiency, and ensuring the sealing of the hinge assembly and chassis body after assembly, thus meeting the customer's IP rating requirements.

[0008] The technical solution adopted by this utility model is as follows: a hinge structure for an AE chassis, including a hinge assembly, wherein the hinge assembly consists of a hinge sleeve, a hinge seat bracket assembly and a pressure rivet washer;

[0009] The hinge sleeve is welded to the side of the chassis door panel via a convex ring;

[0010] The hinge bracket assembly includes a hinge bracket, a retaining ring, and a pin. The retaining ring is pre-installed in the opening slot and through hole of the hinge bracket. The pin cooperates with the retaining ring through a first guide cone, a second guide cone, a third guide cone, a first stop surface, and a second stop surface to achieve sliding stop positioning.

[0011] The press-fit gasket includes a gasket, a blind hole press-fit nut, and a sealing gasket. The blind hole press-fit nut is press-fitted into the first through hole of the gasket, and the sealing gasket is embedded in the step of the gasket to form a two-stage waterproof structure.

[0012] As a further improvement to the above technical solution:

[0013] Preferably, the hinge sleeve is formed by cold extrusion of tubing, with symmetrical protruding rings at both ends, and is fixed to the side of the door panel by resistance welding to form a weld nugget.

[0014] Preferably, the hinge support is formed into a three-dimensional structure from a flat plate cut from a mold, including a bottom surface, a vertical surface, an inclined surface, and a rolled surface; the hinge support has symmetrically provided end grooves, opening grooves, through holes, and pressure pits in its cross-section, for accommodating and limiting the retaining spring.

[0015] Preferably, the first cylindrical surface of the pin is provided with a groove, which provides tool operating space when the pin is moved or pulled out; the pin is guided in stages by three guide cones and cooperates with the arc of the retaining spring to achieve two sliding stop positioning.

[0016] Preferably, the retaining ring includes a tail rod, a vertical rod, a diagonal rod, and an arc retainer. After pre-assembly, it is embedded into the pressure pit through the tail rod, and the diagonal rod and the vertical rod are respectively limited to the end groove and the vertical surface.

[0017] Preferably, the rivet gasket has a step and a first through hole arranged coaxially, the step is interference-fitted with the sealing gasket, and the first through hole is interference-fitted with the blind hole rivet nut.

[0018] Preferably, the assembly of the hinge bracket assembly includes: after the snap ring is pre-installed on the hinge bracket, the pin is inserted into the pin hole through the first guide cone in sequence, and the snap ring is stopped and positioned in stages by the arc of the snap ring and the second and third guide cones.

[0019] Preferably, when the hinge assembly is assembled with the housing, the countersunk screw passes through the housing through hole and locks into the blind hole rivet nut of the rivet washer to form a sealed connection.

[0020] Preferably, when the door panel is closed, the sealing strip and the sealing gasket of the rivet gasket together form a sealing system to meet the IP protection level requirements.

[0021] Preferably, the second through hole of the hinge sleeve is coaxially connected to the pin, so that the door panel retains only the degree of freedom to rotate around the pin.

[0022] The beneficial effects of this utility model are as follows:

[0023] This utility model has a reasonable structure. The hinge sleeve is formed by cold extrusion of tubing, with symmetrical convex rings at both ends. It forms a fusion weld with the side of the door panel through resistance pressure welding. Compared with the multi-point argon arc welding of traditional open hinge sleeves, resistance pressure welding forms a fusion weld through local high pressure, resulting in a more uniform weld with higher strength and reducing the risk of welding deformation. In addition, the convex rings serve as a welding reference to ensure accurate positioning of the hinge sleeve and the door panel and avoid welding misalignment.

[0024] This utility model also has the following advantages:

[0025] (1) The pin of this utility model is provided with three guide cones and two stop surfaces, which cooperate with the arc of the snap ring in stages; the snap ring is pre-installed in the opening slot and pressing pit of the hinge bracket to provide elastic resistance; the guide cone design enables the pin to be automatically guided when inserted, without the need for hammering tools, which greatly reduces the assembly difficulty; the staged stop positioning (two sliding stops) ensures the pin position is accurate and avoids loosening or displacement; in addition, the slot provides tool operating space, which is convenient for subsequent maintenance or disassembly.

[0026] (2) The press-fit washer of this utility model integrates a sealing gasket and a blind hole press-fit nut to form a two-stage waterproof structure; when the door panel is closed, the sealing strip and the washer work together; the first stage of sealing is that the sealing gasket is embedded in the step to prevent water vapor from seeping in from the screw hole; the second stage of sealing is that the blind hole press-fit nut completely wraps the countersunk screw to prevent water leakage at the through hole of the box.

[0027] (3) The hinge bracket of this utility model is formed into a three-dimensional structure by stamping a flat plate from a die blank. The cross-section is symmetrically provided with end slots and opening slots. After the snap ring is pre-installed, the hinge bracket assembly is formed. The modular design reduces the on-site assembly steps. Only the pre-installed components need to be locked to the box with countersunk screws. In addition, the opening slot and the pressure pit accurately position the snap ring to avoid assembly misalignment.

[0028] (4) The second through hole of the hinge sleeve of this utility model is coaxially connected with the pin shaft. The door panel only retains the degree of freedom to rotate around the pin shaft, thereby eliminating the lateral sway of the door panel, avoiding wear or abnormal noise caused by multiple degrees of freedom, and making the door panel opening / closing action smoother and extending the service life of the hinge.

[0029] (5) The hinge sleeve of this utility model is cold extruded to reduce machining steps; the hinge support is stamped by mold to ensure consistency in batch production, thereby reducing material waste and shortening the production cycle; at the same time, it also reduces assembly errors and improves the yield of finished products. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0031] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective.

[0032] Figure 3 This is a schematic diagram of the structure of the present invention under an explosive state.

[0033] Figure 4 This is a schematic diagram of the unfolded structure of the hinge support bracket of this utility model.

[0034] Figure 5 This is a schematic diagram of the disassembled structure of the press-fit washer assembly of this utility model.

[0035] Figure 6 This is a schematic diagram of the hinge bracket assembly of this utility model in the state of being assembled from disassembled parts.

[0036] Figure 7 This is a schematic diagram of the hinge bracket assembly of this utility model in the first pre-assembly completed state.

[0037] Figure 8 This is a schematic diagram showing the second step of the pre-assembly of the hinge bracket assembly of this utility model.

[0038] Figure 9 This is a schematic diagram showing the pre-assembly completed in the third step of the hinge bracket assembly of this utility model.

[0039] Figure 10 This is an exploded view of the housing and hinge bracket assembly of this utility model before assembly.

[0040] Figure 11 This is a structural view of the housing and hinge bracket assembly of this utility model after assembly.

[0041] Figure 12 This is an exploded view of the door panel and hinge sleeve of this utility model before assembly.

[0042] Figure 13 This is a structural view of the door panel and hinge sleeve of this utility model after assembly.

[0043] Figure 14 This is a structural view of the present invention with the door panel open.

[0044] Figure 15 This is a structural view of the present invention with the door panel closed.

[0045] The components include: 1. Hinge bracket; 2. Snap ring; 3. Pin; 4. Press-fit washer; 5. Countersunk screw; 6. Hinge sleeve; 7. Hinge bracket assembly; 8. Hinge assembly; 9. Housing; 10. Door panel;

[0046] 1.1 Hinge bracket unfolding structure; 1.2 Notch; 1.3 End groove; 1.4 Opening groove; 1.5 Through hole; 1.6 Pressing pit; 1.7 Countersunk hole; 1.8 Bottom surface; 1.9 Vertical edge; 1.10 Bevel; 1.11 Rolled; 1.12 Pin hole;

[0047] 2.1 Tail rod; 2.2 Vertical pole; 2.3 Diagonal brace; 2.4 Arc clamp;

[0048] 3.1 First cylindrical surface; 3.2 Slot; 3.3 First stop surface; 3.4 Second stop surface; 3.5 First guide cone; 3.6 Second guide cone; 3.7 Third guide cone;

[0049] 4.1 Disassembled structure of the press-fit washer assembly; 4.2 Waste; 4.3 Blind hole press-fit nut; 4.4 Sealing gasket;

[0050] 4.21 Step; 4.22 First through hole;

[0051] 4.31. Screw hole;

[0052] 6.1 Second cylindrical surface; 6.2 Protruding ring; 6.3 End face; 6.4 Second through hole;

[0053] 9.1 Edge base surface; 9.2 Edge elevation; 9.3 Edge bevel; 9.4 Box through-hole; 9.5 Box assembly;

[0054] 10.1 Side; 10.2 Welding point; 10.3 Sealing strip; 10.4 Door panel assembly. Detailed Implementation

[0055] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0056] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0058] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0059] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0060] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0061] like Figures 1-15 The figure shows a schematic diagram of a hinge structure for an AE chassis according to an embodiment of the present invention; for ease of description, the figure only shows the structure related to the embodiment of the present invention.

[0062] This utility model provides a hinge structure for an AE chassis, including a hinge assembly 8. The hinge assembly 8 consists of a hinge sleeve 6, a hinge seat bracket assembly 7, and a rivet pad 4. The three components are assembled efficiently through a modular structure. The hinge assembly 8 is used to connect the chassis body 9 and the door panel 10, ensuring that the door panel 10 rotates stably around the pin 3, while also meeting high sealing requirements.

[0063] In this embodiment, the hinge sleeve 6 is made from a standard tube of fixed length, and symmetrical convex rings 6.2 are formed at both ends of the second cylindrical surface 6.1 by cold extrusion process;

[0064] The hinge sleeve 6 is fixed to the side 10.1 of the door panel 10 by resistance welding to form a weld nugget 10.2; during welding, the convex ring 6.2 serves as a positioning reference to ensure that the hinge sleeve 6 is perpendicularly aligned with the door panel 10.

[0065] After welding, the second through hole 6.4 of the hinge sleeve 6 and the door panel 10 form an integral door panel assembly 10.4, providing a basis for subsequent assembly with the housing 9.

[0066] Please see Figure 3 In this embodiment, the hinge support bracket 1 has a flat plate-like unfolded structure 1.1, which is formed into a three-dimensional structure by die stamping, including a bottom surface 1.8, a vertical surface 1.9, an inclined surface 1.10, and a rolled surface 1.11.

[0067] Please see Figure 4The formed hinge bracket 1 has symmetrically arranged end grooves 1.3, opening grooves 1.4, through holes 1.5 and pressure pits 1.6 inside the cross section for positioning the snap ring 2.

[0068] Furthermore, the tail rod 2.1 of the snap ring 2 is passed through the opening slot 1.4 on the rolled 1.11 and the through hole 1.5 that bridges the bottom surface 1.8 and the vertical surface 1.9;

[0069] Furthermore, the diagonal rod 2.3 and the upright rod 2.2 of the snap ring 2 are respectively confined to the end groove 1.3 and the vertical surface 1.9, and the tail rod 2.1 is pressed into the pressing pit 1.6 of the bottom surface 1.8, thus completing the pre-assembly of the snap ring 2 and the hinge bracket 1.

[0070] In this embodiment, the phased assembly process of pin 3 is as follows:

[0071] The first step is to insert the first guide cone 3.5 of the pin shaft 3 into the pin hole 1.12 of the hinge bracket 1 until the arc-shaped retainer 2.4 of the retaining ring 2 contacts the second guide cone 3.6 and the second stop surface 3.4 of the pin shaft 3, thus achieving the first sliding stop positioning.

[0072] The second step is to continue advancing the pin 3 until the arc clamp 2.4 contacts the third guide cone 3.7 and the first stop surface 3.3, completing the second stop positioning. At this time, the head of the pin 3 completely occupies the notch 1.2.

[0073] In this embodiment, the assembly process of the rivet washer 4 is as follows:

[0074] A step 4.21 and a first through hole 4.22 are formed by cold stamping on the gasket 4.2. The sealing gasket 4.4 is embedded in the step 4.21. The blind hole press-fit nut 4.3 is pressed into the first through hole 4.22 by interference fit, forming a two-stage waterproof structure.

[0075] The sealing structure includes:

[0076] Primary sealing: After compression, the sealing gasket 4.4 fills the gap between the countersunk screw 5 and the through hole 9.4 in the housing;

[0077] Secondary sealing: The blind hole press-fit nut 4.3 wraps around the end of the countersunk screw 5 to prevent moisture from seeping into the inner cavity of the housing 9.

[0078] In this embodiment, the assembly process of the hinge assembly 8 and the housing 9 is as follows:

[0079] The bottom surface 1.8, vertical edge 1.9, and inclined surface 1.10 of the hinge bracket 1 in the hinge bracket assembly 7 are respectively attached to the edge base surface 9.1, edge vertical surface 9.2, and edge inclined surface 9.3 of the box body 9, and the countersunk hole 1.7 is aligned with the box body through hole 9.4;

[0080] Place the rivet 4 under the through hole 9.4 of the housing from the inner cavity side of the housing body 9, and pass the countersunk screw 5 through the countersunk hole 1.7 of the hinge bracket and the through hole 9.4 of the housing body in sequence, and lock it into the blind hole rivet nut 4.3 of the rivet 4 to form a sealed connection.

[0081] In this embodiment, the assembly process of the door panel assembly 10.4 and the housing assembly 9.5 is as follows:

[0082] The hinge sleeve 6 of the door panel assembly 10.4 is embedded into the notch 1.2 of the hinge bracket 1 in the hinge bracket assembly 7. The head of the pin 3 is pushed with a tool so that it passes through the second through hole 6.4 of the hinge sleeve 6 to achieve coaxial connection. The door panel 10 retains only a single degree of freedom to rotate around the pin 3, eliminating lateral sway.

[0083] When the door panel 10 is closed, the sealing strip 10.3 and the sealing gasket 4.4 of the rivet gasket 4 work together to meet the IP protection level requirements.

[0084] In this embodiment, the convex ring 6.2 of the hinge sleeve 6 forms a weld nugget 10.2 by medium frequency inverter resistance welding, which improves the weld strength and welding efficiency. In addition, the hinge support 1 is formed by die blanking and stamping, resulting in small dimensional errors and high assembly yield in mass production.

[0085] For example, when the pin 3 needs maintenance, the pin 3 can be pulled out with a tool through the slot 3.2, and the hinge assembly 8 can be quickly replaced or lubricated.

[0086] When the sealing gasket 4.4 needs to be replaced, remove the countersunk screw 5 and replace the aged sealing gasket 4.4 to extend the service life of the chassis.

[0087] In summary, this utility model has a reasonable structure. Through modular design, precision stamping process and multi-stage sealing structure, it significantly improves hinge strength, assembly efficiency and adaptability to outdoor applications. It is suitable for sheet metal enclosures with high requirements for sealing and reliability (such as communication cabinets, power equipment boxes, etc.).

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hinge structure for an AE chassis, characterized in that, It includes a hinge assembly (8), which is composed of a hinge sleeve (6), a hinge support assembly (7), and a press-fit washer (4); The hinge sleeve (6) is welded to the side (10.1) of the chassis door panel (10) via a convex ring (6.2); The hinge bracket assembly (7) includes a hinge bracket (1), a retaining ring (2) and a pin (3). The retaining ring (2) is pre-installed in the opening slot (1.4) and through hole (1.5) of the hinge bracket (1). The pin (3) cooperates with the retaining ring (2) through the first guide cone (3.5), the second guide cone (3.6), the third guide cone (3.7) and the first stop surface (3.3) and the second stop surface (3.4) to achieve sliding stop positioning. The press-fit gasket (4) includes a gasket (4.2), a blind hole press-fit nut (4.3), and a sealing gasket (4.4). The blind hole press-fit nut (4.3) is press-fitted into the first through hole (4.22) of the gasket (4.2), and the sealing gasket (4.4) is embedded in the step (4.21) of the gasket (4.2) to form a two-stage waterproof structure.

2. The hinge structure for the AE chassis according to claim 1, characterized in that, The hinge sleeve (6) is formed by cold extrusion of tubing, with symmetrical convex rings (6.2) at both ends, and is fixed to the side (10.1) of the door panel (10) by resistance welding to form a fusion weld.

3. The hinge structure for the AE chassis according to claim 1, characterized in that, The hinge support (1) is formed into a three-dimensional structure from a flat plate cut from a mold, including a bottom surface (1.8), a vertical surface (1.9), an inclined surface (1.10), and a rolled surface (1.11); The hinge bracket (1) has symmetrically provided end grooves (1.3), opening grooves (1.4), through holes (1.5) and pressure pits (1.6) in its cross-section, which are used to accommodate and limit the snap ring (2).

4. The hinge structure for an AE chassis according to claim 1, characterized in that, The first cylindrical surface (3.1) of the pin (3) is provided with a groove (3.2), which provides tool operating space when the pin (3) is moved or pulled out; The pin (3) is guided in stages by three guide cones and cooperates with the arc clamp (2.4) of the snap ring (2) to achieve two sliding stop positioning.

5. The hinge structure for an AE chassis according to claim 1, characterized in that, The snap ring (2) includes a tail rod (2.1), a vertical rod (2.2), a diagonal rod (2.3), and an arc snap ring (2.4). After pre-installation, it is embedded in the pressure pit (1.6) through the tail rod (2.1). The diagonal rod (2.3) and the vertical rod (2.2) are respectively limited to the end groove (1.3) and the vertical surface (1.9).

6. The hinge structure for an AE chassis according to claim 1, characterized in that, The gasket (4) of the press-fit gasket (4) has a step (4.21) and a first through hole (4.22) arranged coaxially. The step (4.21) is interference-fitted with the sealing gasket (4.4), and the first through hole (4.22) is interference-fitted with the blind hole press-fit nut (4.3).

7. The hinge structure for an AE chassis according to claim 1, characterized in that, The assembly of the hinge bracket assembly (7) includes: after the snap ring (2) is pre-installed on the hinge bracket (1), the pin (3) is inserted into the pin hole (1.12) through the first guide cone (3.5) in sequence, and is stopped and positioned in stages by the arc snap (2.4) of the snap ring (2), the second guide cone (3.6), and the third guide cone (3.7).

8. The hinge structure for an AE chassis according to claim 1, characterized in that, When the hinge assembly (8) is assembled with the housing (9), the countersunk screw (5) passes through the housing through hole (9.4) and locks into the blind hole rivet nut (4.3) of the rivet washer (4) to form a sealed connection.

9. The hinge structure for an AE chassis according to claim 1, characterized in that, When the door panel (10) is closed, the sealing strip (10.3) and the sealing gasket (4.4) of the rivet gasket (4) together form a sealing system to meet the IP protection level requirements.

10. The hinge structure for an AE chassis according to claim 1, characterized in that, The second through hole (6.4) of the hinge sleeve (6) is coaxially connected with the pin (3), so that the door panel (10) retains only the degree of freedom to rotate around the pin (3).

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