Sealing profile

Abstract

The invention relates to a sealing profile (10) for sealing a gap (130) between a door (120a) and a door shield (125), which is designed as a hollow profile (11) having a wall (12); the wall part (12) comprises an inner side (12a) and an outer side (12b), and the inner side (12a) encloses a hollow space (14); wherein the hollow profile (11) comprises a profile foot (20), a first sealing lip (30) having a first end (31) and a second end (32), and a second sealing lip (40) having a first end (41) and a second end (42).

Description

Technical Field

[0001] This invention relates to a sealing profile for sealing the gap between a door and a door stop. Background Technology

[0002] Climate chambers of various physical forms are known in the prior art and are used in scientific laboratories or industrial applications to simulate biological, chemical, and / or physical environmental conditions, such as temperature, air pressure, and / or air humidity. A climate chamber includes a shell having an internal space disposed within the shell, wherein biological, chemical, and / or physical environmental conditions are simulated within the internal space.

[0003] In a known climate chamber, its shell includes at least a base, which has a door and an internal space that can be closed through at least one door. In the closed state, the door should fit as tightly as possible against a doorstop mounted on the base. Here, the doorstop can be mounted on a fixed part of the base, such as a door frame; if the climate chamber has two doors, the doorstop can also be mounted on the other door.

[0004] The door of a climate chamber must not only allow substances to enter the interior space but also have insulated walls to thermally isolate the interior space from the environment. A desired climate can be set within the climate chamber, specifically by regulating temperature and / or humidity. Typically, the temperature of a climate chamber can be set between -10°C and 100°C, but some climate chambers with high-temperature ranges can maintain temperatures up to 350°C for extended periods. There are also deep-freezing devices that can maintain temperatures as low as -85°C for extended periods. Here, the door must have sufficient thermal insulation and also a tight seal between the door and the door stop to prevent heat exchange with the environment and the exchange of substances. For this purpose, seals are known to be provided on the door or door stop.

[0005] For example, DE202008000970U1 discloses an elastic sealing profile having a profile foot and a profile head. The profile foot is used to hold the sealing profile in a groove in the frame groove of the door stop, and the profile head is provided with a sealing lip that contacts the surface of the door when the door is closed.

[0006] Other sealing profiles that produce a sealing effect on a single face when the door is closed are disclosed in EP0436810A1, DE8711518U1 and DE8528149U1.

[0007] However, a drawback has been found in the sealing profiles known from the existing technology: the seal achieved on a single surface by the sealing lip alone is insufficient for multiple applications, especially in climate chambers with extreme climatic conditions. Summary of the Invention

[0008] Therefore, in order to solve the problem, the present invention provides a sealing profile that can improve the sealing effect.

[0009] This problem is solved by a sealing profile having the features of claim 1.

[0010] Advantageous embodiments and further improvements of the present invention are described in the dependent claims.

[0011] The sealing profile for sealing the gap between a door and a door stop according to the present invention is constructed as a hollow profile having a wall, the wall comprising an inner side and an outer side, the inner side enclosing a hollow space; wherein, the hollow profile includes a profile foot, a first sealing lip having a first end and a second end, and a second sealing lip having a first end and a second end; the profile foot is constructed to be generally U-shaped, having a first profile foot support leg with a first end and a second end, a second profile foot support leg with a first end and a second end, and a profile foot floor; wherein, the second profile foot support leg is longer than the first profile foot support leg; the first end of the first sealing lip is connected to the first end of the first profile foot support leg via a first hinge portion; the first end of the second sealing lip is connected to the first end of the second profile foot support leg via a second hinge portion; the second ends of the first sealing lip and the second ends of the second sealing lip are connected to each other via a third hinge portion; and, the first sealing lip and the second sealing lip form a first angle greater than 180° at the third hinge portion. By providing two sealing lips connected to each other via a hinge and forming a first angle greater than 180°, the sealing profile can bend inward at a third hinge between the two sealing lips when the door pivots inward to the door stop. This allows the two sealing lips to contact two surfaces at an angle for sealing, resulting in a superior sealing effect compared to a single sealing lip that can only contact one surface for sealing. In the unloaded state of the sealing profile, the first angle is preferably between 230° and 250°, for example, about 240°. Furthermore, after the sealing profile is installed, when the door is closed and under load, the first angle is preferably about 270°.

[0012] Preferably, the first, second, and third hinge portions are formed by weakening the material of the wall portion of the hollow profile. Hinges constructed in this way can be manufactured simply and economically.

[0013] According to a particularly preferred embodiment of the invention, the third hinge portion is formed by weakening the material on the outer side of the wall of the hollow profile. This facilitates the inward bending of the sealing profile between the two sealing lips.

[0014] Preferably, the first hinge portion is formed by weakening the material on the inner side of the wall of the hollow profile. This structural form facilitates the inward pivoting of the first sealing lip relative to the profile foot.

[0015] Advantageously, the second hinge is formed by weakening the material on the inner side of the wall of the hollow profile. This structural form facilitates the inward pivoting of the second sealing lip relative to the profile foot.

[0016] According to a preferred embodiment of the invention, the first sealing lip is configured as a planar element. This configuration allows for the formation of a sealing surface that is as large as possible.

[0017] Advantageously, the first sealing lip includes a longitudinal axis, and the first profile leg includes a longitudinal axis. When the sealing profile is not under stress, the two are positioned at a second angle to each other, the angle ranging from 100° to 125°, with the second angle preferably being approximately 108°. This structural design compensates for the tolerances between the door and the door stop in the closed position while achieving a good sealing effect.

[0018] A particularly preferred embodiment of the invention specifies that the second sealing lip has an L-shaped cross-section, comprising a first leg containing a first end of the second sealing lip and a second leg containing a second end of the second sealing lip; wherein the two legs are arranged at a third angle to each other (particularly rigidly connected to each other), the angle ranging from 80° to 90°, wherein the third angle is preferably about 85°. By designing the second sealing lip at this angle, a sealing surface as large as possible can be achieved between the second leg and the contact surface, wherein contact pressure can be applied through the first leg; a structure where the third angle between the two legs is less than 90° is advantageous for the application of contact pressure. In other words, the rigid connection of the two legs of the second sealing lip means that there is no hinge portion at all, thereby increasing the contact pressure and achieving a sealing effect.

[0019] Preferably, the first leg of the second sealing lip has a first sealing lip leg longitudinal axis, and the second profile leg has a second profile leg longitudinal axis. These two axes are arranged at a fourth angle to each other when the sealing profile is not under stress, with the angle ranging from 100° to 125°, and preferably approximately 105°. This structural design can compensate for the tolerances between the door and the door stop when the door is closed, while also achieving a good sealing effect.

[0020] In a preferred structural form, the second angle between the longitudinal axis of the first sealing lip and the longitudinal axis of the first profile leg deviates from the fourth angle between the longitudinal axis of the first sealing lip leg and the longitudinal axis of the second profile leg, with the deviation angle preferably between 2° and 4°. This can further improve the tolerance compensation effect and the sealing effect.

[0021] Preferably, at least one retainer is provided on the profile foot on the outer side of the wall portion of the hollow profile, preferably on the first profile foot support leg and / or the second profile foot support leg. This retainer is preferably constructed as a retaining lip or retaining rib. Such a retainer prevents the sealing profile from falling out of the groove on the door or door stop, for example, by achieving better frictional contact, or by the retainer engaging with the corresponding recess (such as a slot) and locking in place.

[0022] Advantageously, the profile foot floor includes corrugations on the outer side of the wall of the hollow profile, which can improve the ease of installation and removal of the sealing profile, especially by ventilation, when the sealing profile is installed in the groove on the door or door stop.

[0023] According to a particularly preferred embodiment of the invention, the sealing profile is made of plastic, preferably silicone. Using this material is beneficial for improving the elastic properties and sealing effect of the sealing profile. Here, the sealing profile can preferably be produced by an extrusion process.

[0024] The sealing profile of the present invention is preferably used in a climate chamber, which includes a door pivotable between an open position and a closed position, and a door stop; wherein the door stop includes a first contact surface and a second contact surface, which are arranged at a fifth angle to each other, the fifth angle ranging from 80° to 100°. The sealing profile of the present invention is disposed on the door, wherein, when the door is in the closed state, the first sealing lip is at least partially in contact with the first contact surface, and the second sealing lip is at least partially in contact with the second contact surface. By sealing the two contact surfaces arranged at a fifth angle to each other, a good sealing effect can be achieved. The fifth angle can be approximately 90°. Attached Figure Description

[0025] The embodiments of the present invention will now be explained in detail with reference to the accompanying drawings. In the drawings: Figure 1 A cross-section of the sealing profile according to the invention in a non-stressed state is shown in one embodiment. Figure 2 It shows that according to Figure 1 The cross-section of the sealing profile under stress; Figure 3 A front view of a climate chamber with a door in the open position is shown in one embodiment, on which are provided [details about the climate chamber]. Figure 1 Sealing profiles; Figure 4 It shows that according to Figure 3 A front view of the climate chamber with the door in the closed position; Figure 5 It shows that according to Figure 4 A top view of the climate chamber; Figure 6 It shows that according to Figure 5 A magnified view of the cross-section of the climate chamber; Figure 7 It shows that according to Figure 3 A perspective view of the climate chamber, and Figure 8 It shows Figure 7 Zoomed-in details. Detailed Implementation

[0026] Figure 1 and Figure 2 A cross-section of one embodiment of the sealing profile 10 of the present invention is shown. Figures 3 to 8 The installation of this sealing profile 10 in the climate chamber 100 is shown. Identical or functionally identical components are indicated by the same reference numerals, and not all reference numerals are given in the various figures for clarity.

[0027] The sealing profile 10 is configured as a hollow profile 11, which has a wall portion 12 including an inner side 12a and an outer side 12b. A hollow space 14 is enclosed by the inner side 12a. The sealing profile 10 can be made of plastic, particularly silicone, and can be produced by, for example, an extrusion process. The sealing profile 10 has a longitudinal axis L, which is perpendicular to... Figure 1 The cross-section shown is vertical.

[0028] The hollow profile 11 includes a profile foot 20, a first sealing lip 30 having a first end 31 and a second end 32, and a second sealing lip 40 having a first end 41 and a second end 42.

[0029] The profile foot 20 is generally U-shaped and includes a first profile foot leg 21, a second profile foot leg 22, and a profile foot base 23. The first profile foot leg 21 includes a first profile foot leg longitudinal axis APS1, a first end 21a, a second end 21b, and a length LPS1. The second profile foot leg 22 includes a second profile foot leg longitudinal axis APS2, a first end 22a, a second end 22b, and a length LPS2. The first end 21a of the first profile foot leg 21 is disposed on the profile foot base 23, and the first end 22a of the second profile foot leg 22 is disposed on the profile foot base 23. The first profile foot leg longitudinal axis APS1 and the second profile foot leg longitudinal axis APS2 are preferably configured to be substantially perpendicular to the profile foot base 23. The first profile leg 21 and the second profile leg 22 can each extend from the profile leg floor 23, and their thickness gradually decreases. For this reason, the inner side 12a of the wall portion 12 of the hollow profile 11 can be inclined relative to the longitudinal axis APS1 of the first profile leg and the longitudinal axis APS2 of the second profile leg, respectively.

[0030] The length LPS2 of the second profile leg 22 is greater than the length LPS1 of the first profile leg 21.

[0031] At least one retainer 24 may be provided on the profile foot 20 on the outer side 12b of the wall portion 12 of the hollow profile 11, preferably on the first profile foot support 21 and / or the second profile foot support 22. The retainer 24 may be in the form of, for example, a retaining lip or a retaining rib, and preferably extends in a direction parallel to the longitudinal axis L of the sealing profile 10.

[0032] The profile foot floor 23 may have corrugations 26 on the outer side 12b of the wall portion 12 of the hollow profile 11, which preferably extend in a direction parallel to the longitudinal axis L of the sealed profile 10.

[0033] The first end 31 of the first sealing lip 30 is disposed on the first end 21a of the first profile leg 21 via a first hinge portion 51, while the first end 41 of the second sealing lip 40 is disposed on the first end 22a of the second profile leg 22 via a second hinge portion 52. The second ends 32 of the first sealing lip 30 and the second ends 42 of the second sealing lip 40 are connected via a third hinge portion 53, wherein the first sealing lip 30 and the second sealing lip 40 form a first angle α1 greater than 180° at the third hinge portion 53. In particular, in the non-stressed state of the sealing profile 10, the first angle α1 ranges between 230° and 250°, and is preferably about 240° (see...). Figure 1 If the sealing profile 10 (described in more detail below) is installed in the climate chamber 100 and is subjected to force due to the closure of the door 120a, the sealing profile 10 will bend at the third hinge 53 until the first angle α1 preferably reaches approximately 270° (see [link to relevant documentation]). Figure 2 ).

[0034] The first hinge portion 51, the second hinge portion 52, and the third hinge portion 53 can be formed by weakening the material in the wall portion 12 of the hollow profile 11. In this way, the hinge portions 51, 52, and 53 can be constructed as a movable hinge point. The third hinge portion 53 is formed specifically by thinning the outer side 12b of the wall portion 12 of the hollow profile 11, while the first hinge portion 51 and the second hinge portion 52 are formed specifically by thinning the inner side 12a of the wall portion 12 of the hollow profile 11. Therefore, the material thinning is particularly formed on the side of the wall portion 12 of the hollow profile 11, that is, on the side where the corresponding hinge portions 51, 52, and 53 are folded.

[0035] The first sealing lip 30 can be constructed as a planar member having a longitudinal axis AD1. When the sealing profile 10 is in a non-stressed state, the longitudinal axis AD1 of the first sealing lip and the longitudinal axis APS1 of the first profile leg are positioned at a second angle α2 relative to each other, the angle being between 100° and 125°, preferably about 108° (see [reference]). Figure 1 When the sealing profile 10 is under stress, the angle α2 will decrease to approximately 90° (see...). Figure 2 ).

[0036] The second sealing lip 40 may have an L-shaped cross-section, which includes a first leg 43 containing a first end 41 of the second sealing lip 40, and a second leg 44 containing a second end 42 of the second sealing lip 40. Here, the first leg 43 has a first sealing lip leg longitudinal axis ADS1, and the second leg 44 has a second sealing lip leg longitudinal axis ADS2. The two legs 43 and 44 (specifically the first sealing lip leg longitudinal axis ADS1 and the second sealing lip leg longitudinal axis ADS2) are arranged at a third angle α3 relative to each other, which ranges from 80° to 90°, preferably about 85°. In particular, no hinge is provided between the first leg 43 and the second leg 44, which means that within the elastic range of the material used for the sealing profile 10, the first leg 43 and the second leg 44 are particularly rigidly arranged relative to each other. When the second sealing lip 40 is constructed as an L-shaped member, the second leg 44 (especially the longitudinal axis ADS2 of the second sealing lip leg) forms a first angle α1 with the first sealing lip 30 (especially the longitudinal axis AD1 of the first sealing lip).

[0037] The longitudinal axis ADS1 of the first sealing lip support leg of the first support leg 43 and the longitudinal axis APS2 of the second profile foot support leg of the second profile foot support leg 22 are arranged at a fourth angle α4 when the sealing profile 10 is in a non-stressed state. This angle is preferably between 100° and 125°, for example, about 105° (see...). Figure 1 When the sealing profile 10 is under stress, the angle α4 decreases to approximately 90° (see...). Figure 2 ).

[0038] Figures 3 to 8The climate chamber 100 shown includes a housing 105, which includes a base 110, and at least one door 120a pivotable between an open position and a closed position. In this case, there are two doors 120a and 120b pivotable between the open and closed positions. The housing 105 encloses an interior space 106. The climate chamber 100 also includes a door stop 125 for door 120a. If there is exactly one door 120a, the door stop 125 can be fully disposed on the base 110. If, as shown in this embodiment, the climate chamber 100 has two doors 120a and 120b, the door stop 125 for door 120a (at least for the free front edge of door 120a) can be disposed on the other door 120b. Door stops 125 for the upper and lower edges of door 120a can be disposed on the base 110.

[0039] The door stop 125 includes a first contact surface 125a and a second contact surface 125b, which are positioned at a fifth angle α5 relative to each other. The fifth angle α5 ranges from 80° to 100°, preferably approximately 90°. A sealing profile 10 is used to seal the gap 130 between the door 120a and the door stop 125. For this purpose, the sealing profile 10 can be provided on the door 120a, particularly in a recess 127, which can be located on the side edge of the door 120a. Specifically, the sealing profile 10 is positioned by embedding its profile feet 20 into the recess 127 (see...). Figure 6 The retainer 24 can provide sufficient retaining force. Figure 6 The deformation state of the retainer 24 is not shown.

[0040] When door 120a is closed, door stop 125 pivots to the area between the second leg 44 of the first sealing lip 30 and the second sealing lip 40 (see...). Figure 6 When the door 120a is in the closed state, the sealing profile 10 is subjected to force and deforms. Specifically, the first sealing lip 30 is at least partially in contact with the first contact surface 125a, and the second sealing lip 40 is at least partially in contact with the second contact surface 125b, especially at least partially in contact with the second leg 44 of the second sealing lip 40.

[0041] The sealing profile 10 of the present invention includes two sealing lips 30 and 40 arranged at a certain angle to each other, and the two sealing lips can pivot relative to each other around the third hinge portion 53 when subjected to force, thereby forming a seal on two contact surfaces 125a and 125b that are also arranged at an angle to each other, thereby achieving a better sealing effect.

[0042] List of reference numerals 10 Sealing profiles 11 Hollow profiles 12. Wall section 12a inner side 12b Outer side 14 Hollow Space 20 profile foot 21 First-type support leg 21a First end 21b Second end 22 Second-type support leg 22a First end 22b Second End 23 Profile Foot Floor 24 Retaining parts 26 ripples 30 First sealing lip 31 First End 32 Second End 40 Second sealing lip 41 First End 42 Second End 43 First leg 44 Second leg 51 First hinge section 52 Second hinge section 53 Third hinge 100 Climate Chamber 105 Housing 106 Interior Space 110 matrix 120a door 120b door 125 door stop 125a First contact surface 125b Second Contact Surface 127 Groove 130 gap α1 First Angle α2 Second angle α3 Third angle α4 Fourth Angle α5 Fifth Angle L longitudinal axis AD1 Longitudinal axis of the first sealing lip ADS1 First Sealing Lip Support Leg Longitudinal Axis ADS2 Second Sealing Lip Support Leg Longitudinal Axis APS1 First Profile Leg Longitudinal Axis APS2 second profile leg longitudinal axis LPS1 First Profile Leg Length LPS2 second profile leg length

Claims

1. A sealing profile (10) for sealing the gap (130) between a door (120a) and a door stop (125), which is constructed as a hollow profile (11) having a wall portion (12) comprising an inner side (12a) and an outer side (12b), wherein the inner side (12a) encloses a hollow space (14); wherein, The hollow profile (11) includes a profile foot (20), a first sealing lip (30) having a first end (31) and a second end (32), and a second sealing lip (40) having a first end (41) and a second end (42); the profile foot (20) is generally U-shaped, and includes a first profile foot support leg (21) having a first end (21a) and a second end (21b), a second profile foot support leg (22) having a first end (22a) and a second end (22b), and a profile foot floor (23); the length of the second profile foot support leg (22) is greater than that of the first profile foot support leg (21); the first sealing lip (30) The first end (31) is connected to the first end (21a) of the first profile leg (21) via the first hinge (51); the first end (41) of the second sealing lip (40) is connected to the first end (22a) of the second profile leg (22) via the second hinge (52); the second end (32) of the first sealing lip (30) and the second end (42) of the second sealing lip (40) are connected via the third hinge (53), and the first sealing lip (30) and the second sealing lip (40) form a first angle (α1) greater than 180° at the third hinge (53).

2. The sealing profile (10) as described in claim 1. Its features are, When the sealing profile (10) is not under stress, the first angle (α1) is between 230° and 250°, preferably about 240°.

3. The sealing profile (10) as described in any of the preceding claims. Its features are, The first hinge portion (51), the second hinge portion (52) and the third hinge portion (53) are formed by weakening the material of the wall portion (12) of the hollow profile (11).

4. The sealing profile (10) as described in any of the preceding claims. Its features are, The third hinge (53) is formed by weakening the material of the outer side (12b) of the wall portion (12) of the hollow profile (11).

5. The sealing profile (10) as described in any of the preceding claims. Its features are, The first hinge portion (51) is formed by weakening the material of the inner side (12a) of the wall portion (12) of the hollow profile (11).

6. The sealing profile (10) as described in any of the preceding claims. Its features are, The second hinge (52) is formed by weakening the material of the inner side (12a) of the wall (12) of the hollow profile (11).

7. The sealing profile (10) as described in any of the preceding claims. Its features are, The first sealing lip (30) is constructed as a planar member.

8. The sealing profile (10) as described in any of the preceding claims. Its features are, The first sealing lip (30) has a first sealing lip longitudinal axis (AD1), and the first profile leg (21) has a first profile leg longitudinal axis (APS1). The two axes are set at a second angle (α2) relative to each other when the sealing profile (10) is not under stress. The second angle (α2) is between 100° and 125°, preferably about 108°.

9. The sealing profile (10) as described in any of the preceding claims. Its features are, The second sealing lip (40) has an L-shaped cross-section, including a first leg (43) containing a first end (41) of the second sealing lip (40) and a second leg (44) containing a second end (42) of the second sealing lip (40); wherein the two legs (43, 44) are arranged at a third angle (α3) relative to each other and are intentionally rigidly connected, the third angle (α3) being in the range of 80° to 90°, preferably about 85°.

10. The sealing profile (10) as described in claim 9. Its features are, The first leg (43) of the second sealing lip (40) has a first sealing lip leg longitudinal axis (ADS1), and the second profile leg (22) has a second profile leg longitudinal axis (APS2). The two axes are set at a fourth angle (α4) relative to each other when the sealing profile (10) is not under stress. The fourth angle (α4) is between 100° and 125°, preferably about 105°.

11. The sealing profile (10) as described in any of the preceding claims. Its features are, At least one retainer (24) is provided on the profile foot (20) on the outer side (12b) of the wall portion (12) of the hollow profile (11), preferably provided on the first profile foot support leg (21) and / or the second profile foot support leg (22), and the retainer (24) is preferably constructed as a retaining lip or a retaining rib.

12. The sealing profile (10) as described in any of the preceding claims. Its features are, The profile footboard (23) includes corrugations (26) on the outer side (12b) of the wall (12) of the hollow profile (11).

13. The sealing profile (10) as described in any of the preceding claims. Its features are, The sealing profile (10) is made of plastic, preferably silicone.

14. A climate chamber (100) comprising a door (120a) pivotable between an open position and a closed position, and a door stop (125); the door stop (125) comprising a first contact surface (125a) and a second contact surface (125b) disposed at a fifth angle (α5) relative to each other, the angle ranging from 80° to 100°, wherein the fifth angle (α5) is preferably about 90°; the door (120a) is provided with a sealing profile (10) according to any one of the preceding claims, and in the closed state of the door (120a), the first sealing lip (30) is at least partially in contact with the first contact surface (125a), and the second sealing lip (40) is at least partially in contact with the second contact surface (125b).

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