A cap hinge for cleanroom doors

Abstract

This utility model relates to the field of cleanroom panel technology, specifically to a cap hinge for cleanroom doors, comprising a pin, a bushing, and a hinge plate. The hinge plate includes a main body section and an extension section. The main body section is fixed to the bushing, and the extension section extends axially along the pin towards another bushing. The hinge plate includes a locking piece and a cap. The portion of the locking piece in the main body section is a first locking part, and the portion in the extension section is a second locking part. The portion of the cap in the main body section is a first cap, and the portion in the extension section is a second cap. The first and second locking parts of the locking piece are respectively provided with screw holes. The outer contour edge of the second cap has a vertically bent U-shaped rim, while the first cap does not have a rim. The first cap has a receiving groove. The first cap fits into the first locking part to bond the first cap and the first locking part. The second cap fits into the second locking part, and an adhesive bonds the second cap and the second locking part, with the rim nested around the outer periphery of the second cap.

Description

Technical Field

[0001] This utility model relates to the field of cleanroom panel technology, and in particular to a cap hinge for cleanroom doors. Background Technology

[0002] Currently, cleanroom technology effectively controls contaminants such as particulates, harmful air pollutants, and bacteria according to customer requirements. It is widely used in industries such as semiconductors, optoelectronics, biomedicine, fine chemicals, and food processing. In a cleanroom, a cleanroom door is installed between the partition walls of adjacent cleanrooms. The cleanroom door consists of a door frame and a door panel, which are connected by at least two hinges.

[0003] For existing hinges in cleanrooms, they consist of pins and hinges. In relatively humid environments such as food processing, existing hinges and hinge screws are exposed to moisture for extended periods, which accelerates erosion, aging, and wear. In other applications, hinges are exposed to direct sunlight, which also easily leads to aging.

[0004] The inventor attempted to fix a cover plate to the hinge leaf to conceal the screw, but the adhesive between the cover plate and the leaf body was prone to overflow, which made it easy for the adhesive to enter the pin and affect the normal rotation of the hinge. Utility Model Content

[0005] This utility model provides a cap hinge for cleanroom doors, which can solve at least one of the above-mentioned technical problems.

[0006] To address the aforementioned technical problems, one or more embodiments of this utility model provide a cap hinge for cleanroom doors, comprising a pin with two bushings rotatably mounted thereon, each bushing having a leaf blade fixed thereon. Each leaf blade includes a main body section and an extension section. The main body section is fixed to the bushing, and the extension section extends axially along the pin towards the other bushing, having a gap between the extension section and the bushing. The leaf blade includes a separately formed locking piece and a cap. The portion of the locking piece in the main body section is a first locking part, and the portion of the locking piece in the extension section is a second locking part. The portion of the cap in the main body section is a first cap, and the portion of the cap in the extension section is a second cap.

[0007] The locking plate is fixed to the bushing, and the first and second locking parts of the locking plate are respectively provided with screw holes. The outer contour edge of the second cover has a vertically bent U-shaped rim, while the first cover does not have a rim. The first cover has a receiving groove, and the space enclosed by the receiving groove and the rim of the second cover respectively contains adhesive. The first cover fits against the first locking part, and the opening of the receiving groove is blocked by the first cover to bond the first cover and the first locking part. The second cover fits against the second locking part, and the adhesive can bond the second cover and the second locking part. The rim is nested around the outer periphery of the second cover to prevent the adhesive from overflowing from the second cover.

[0008] The beneficial effects of one or more of the above technical solutions are as follows:

[0009] In this design, the first locking part has a groove for accommodating adhesive, and the outer periphery of the second cover part has a U-shaped rim, the space within which the adhesive is accommodated. In this configuration, the gap between the second locking part, the second cover part, and the bushing is relatively large. The rim structure does not obstruct the opening and closing of the hinge blades, and the rim effectively prevents overflowing adhesive, thus achieving bonding between the second cover part and the second locking part.

[0010] The first locking part and the first cover plate are relatively close to the bushing, and the first locking part is connected to the bushing. If the surrounding structure is used again, the adhesive will not be able to escape to the bushing. Therefore, this solution provides a groove on the first locking part, and the adhesive in the groove is used only to bond with the first cover part. That is, this solution reduces the bonding area between the first cover part and the first locking part and increases the thickness of the adhesive to achieve a better bonding effect and reduce the probability of adhesive escaping to the bushing.

[0011] In summary, this solution uses different bonding structures for different areas of the cap and bonding them with the corresponding locking pieces. This ensures the bonding effect while reducing the probability of adhesive escaping to the bushing, and does not significantly weaken the structural strength of the entire sheet. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the overall structure in an embodiment of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure after removing the cap in an embodiment of this utility model;

[0014] Figure 3 This is an axial side view of the cap in an embodiment of the present invention;

[0015] Figure 4 This is a schematic diagram of the cap hinge installed on the door body in an embodiment of this utility model;

[0016] Figure 5 This is a front view schematic diagram of a single page in an embodiment of this utility model.

[0017] In the diagram, 1. Leaf blade; 101. Main body section; 102. Extension section; 2. Bushing; 3. Pin; 4. Gap; 5. Door frame; 6. Door body; 110. Locking plate; 111. First lock part; 112. Screw hole; 113. Receiving groove; 114. Positioning hole; 115. Second lock part; 120. Cap; 121. First cover part; 122. Second cover part; 123. Edge. Detailed Implementation

[0018] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0019] like Figures 1-5 As shown, one or more embodiments of this utility model provide a cover 120 hinge for a cleanroom door 6, including a pin 3 on which two bushings 2 are rotatably mounted, and a leaf piece 1 is fixed on each bushing 2. The leaf piece 1 includes a main body section 101 and an extension section 102. The main body section 101 is fixed on the bushing 2, and the extension section 102 extends along the axial direction of the pin 3 toward the other bushing 2 and has a gap 4 between it and the bushing 2. The leaf piece 1 includes a separately formed locking piece 110 and a cover 120. The portion of the locking piece 110 in the main body section 101 is a first locking part 111, and the portion of the locking piece 110 in the extension section 102 is a second locking part 115. The portion of the cover 120 in the main body section 101 is a first cover part 121, and the portion of the cover 120 in the extension section 102 is a second cover part 122.

[0020] The locking piece 110 is fixed to the bushing 2. The first locking portion 111 and the second locking portion 115 of the locking piece 110 are respectively provided with screw holes 112. The outer contour edge of the second cover portion 122 has a vertically bent U-shaped rim 123, while the first cover portion 121 does not have a rim 123. The first cover portion 121 has a receiving groove 113, and the space enclosed by the receiving groove 113 and the rim 123 of the second cover portion 122 respectively contains adhesive. The first cover portion 121 is fitted to the first locking portion 111, and the opening of the receiving groove 113 is blocked by the first cover portion 121 to bond the first cover portion 121 and the first locking portion 111. The second cover portion 122 is fitted to the second locking portion 115, and the adhesive can bond the second cover portion 122 and the second locking portion 115. The rim 123 is nested around the outer periphery of the second cover portion 122 to prevent the adhesive from overflowing from the second cover portion 122.

[0021] Specifically, the bushing 2 and the pin 3 can only rotate relative to each other, but cannot translate relative to each other along the axial direction. That is to say, the bushing 2 and the pin 3 are axially limited. The limiting structure can be set by those skilled in the art, and will not be described in detail here.

[0022] In this embodiment, the middle part of the receiving groove 113 has a positioning hole 114, and the axis of the positioning hole 114 is parallel to the thickness direction of the leaf 1; the first cover 121 has a positioning post, which is used to be inserted into the positioning hole 114.

[0023] Specifically, the positioning post here is a circular positioning post, and the positioning hole 114 is a circular positioning hole 114. In other embodiments, the cross-sectional shape of the positioning post and the positioning hole 114 can be square, elliptical, or other shapes.

[0024] Each locking piece 110 has one positioning hole 114, and the cap 120 has one positioning post. In other embodiments, the number of positioning holes 114 may be two or three, or other numbers, which can be set by those skilled in the art.

[0025] In this embodiment, the receiving groove 113 is a square groove, and some screw holes 112 are provided in the receiving groove 113.

[0026] Specifically, the four sides of the square groove are spaced far from the four edges of the first locking part 111 to reduce the probability of adhesive overflowing from the receiving groove 113 and coming into contact with the bushing 2.

[0027] In this embodiment, the outline shape of the cap 120 projected along its own thickness direction S1 is the same as the outline shape of the locking piece 110 projected along its own thickness direction S2, and the size of the projection S1 is 1.05-1.1 times the size of the projection S2.

[0028] In this embodiment, the first cover 121 and the first lock 111 are both square, and the second cover 122 and the second lock 115 respectively include a rectangular part and a semi-circular part. The side of the rectangular part away from the bushing 2 is flush with the side of the first cover 121 and the first lock 111 away from the bushing 2.

[0029] In this embodiment, the length of the first cover 121 along the axial direction of the bushing 2 is 48mm, the length of the rectangular portion of the second cover 122 along the axial direction of the bushing 2 is 38mm-40mm, the radius of the semi-circular portion of the second cover 122 is 22mm-25mm, and the width of the leaf 1 along the axial direction perpendicular to the bushing 2 is 45mm.

[0030] In this embodiment, the screw holes 112 are evenly distributed along the axial direction of the parallel bushing 2.

[0031] As a specific structural form, there are two screw holes 112 on the first locking part 111 and the second locking part 115 respectively. The screw holes 112 are located at the center of the locking piece 110 along the width direction (perpendicular to the axial direction of the pin 3) so that the screw holes 112 are evenly stressed.

[0032] In this embodiment, the main body segment 101 and the extension segment 102 have transition rounded corners on the sides near the gap 4, and the main body segment 101 has rounded corners at the corners away from the bushing 2 and away from the extension segment 102.

[0033] Working principle: When using this device, first assemble the locking plate 110 with the bushing 2 and the pin 3 into a whole. Then fix the two locking plates 110 to the adjacent door body 6 and door frame 5 respectively through screws and screw holes 112.

[0034] Then, an adhesive is applied to the inner part of the second cover 122 of the cap 120, and the adhesive is confined within the perimeter 123; the receiving groove 113 is filled with adhesive, and the adhesive is confined within the receiving groove 113.

[0035] Align the cap 120 with the locking piece 110, so that the positioning pin is inserted into the positioning hole 114, and the rim 123 is aligned with the outside of the second lock part 115. Finally, cover the locking piece 110 with the cap 120, so that the cap 120 and the locking piece 110 are bonded and fixed with adhesive.

[0036] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0037] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A cap hinge for a cleanroom door, comprising a pin on which two bushings are rotatably mounted, each bushing having a leaf blade fixed thereon; the leaf blade comprising a main body section and an extension section, the main body section being fixed to the bushing, and the extension section extending axially along the pin towards the other bushing and having a gap between the extension section and the bushing, characterized in that, The leaf includes a separately formed locking piece and a cap. The locking piece is a first locking part in the main body section and a second locking part in the extension section. The cap is a first cap in the main body section and a second cap in the extension section. The locking plate is fixed to the bushing, and the first locking part and the second locking part of the locking plate are respectively provided with screw holes; the outer contour edge of the second cover has a vertically bent U-shaped rim, while the first cover does not have a rim; the first cover has a receiving groove, and the space enclosed by the receiving groove and the rim of the second cover respectively contains adhesive; the first cover is fitted with the first locking part, and the opening of the receiving groove is blocked by the first cover to bond the first cover and the first locking part; the second cover is fitted with the second locking part, and the adhesive can bond the second cover and the second locking part, and the rim is nested around the outer periphery of the second cover to prevent the adhesive from overflowing from the second cover.

2. The cap hinge for cleanroom doors according to claim 1, characterized in that, The receiving groove has a positioning hole in the middle, and the axis of the positioning hole is parallel to the thickness direction of the leaf; the first cover has a positioning post, which is used to be inserted into the positioning hole.

3. The cap and butt hinge for clean room doors of claim 1 wherein, The receiving groove is a square groove, and some screw holes are located in the receiving groove.

4. The cap and butt hinge for clean room doors of claim 1 wherein, The outline shape of the cap projected along its own thickness direction S1 is the same as the outline shape of the locking piece projected along its own thickness direction S2, and the size of the projection S1 is 1.05-1.1 times the size of the projection S2.

5. The cap and butt hinge for clean room doors of claim 1 wherein, Both the first cover and the first lock are square. The second cover and the second lock each include a rectangular portion and a semi-circular portion. The side of the rectangular portion away from the bushing is flush with the side of the first cover and the first lock away from the bushing.

6. The cap and butt hinge for clean room doors of claim 5 wherein, The length of the first cover along the axial direction of the bushing is 48mm, the length of the rectangular portion of the second cover along the axial direction of the bushing is 38mm-40mm, the radius of the semi-circular portion of the second cover is 22mm-25mm, and the width of the leaf along the axial direction perpendicular to the bushing is 45mm.

7. The cap and butt hinge for clean room doors of claim 1 wherein, The screw holes are evenly distributed along the axial direction of the parallel bushing.

8. The cap and butt hinge for clean room doors of claim 1 wherein, The main body section and the extension section have transition fillets on the sides near the gap, and the main body section has fillets at the corners away from the bushing and away from the extension section.

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