CN210423706U

CN210423706U - Sealing strip

Info

Publication number: CN210423706U
Application number: CN201921056065.2U
Authority: CN
Inventors: 刘勇; 周忠博; 段皓; 王宏; 汤克震; 李建萍
Original assignee: Shantui Chutian Construction Machinery Co Ltd
Current assignee: Shantui Chutian Construction Machinery Co Ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-04-28
Anticipated expiration: 2029-07-08

Abstract

The utility model relates to the technical field of sealing strips, in particular to a sealing strip which comprises a rubber shell, wherein the rubber shell comprises a first end and a second end which are oppositely arranged, the first end is arranged to be an inner concave surface and is used for being connected with a connected piece, and the second end is used for being connected with the connected piece; the rubber shell is internally provided with an air bag which is positioned between the first end and the second end, two opposite side walls of the air bag are respectively provided with a first vent hole and a second vent hole, the first vent hole is communicated with a sealed space, and the second vent hole is communicated with the external atmosphere. When the gap is changed continuously due to mechanical vibration, the air pressure balance between the sealed space and the outside atmosphere can be ensured through the first vent hole and the second vent hole, the shape of the sealing strip can be freely adjusted along with the change of the gap without bearing the action of pressure difference, and the sealing effect is ensured; and the concave surface can ensure that the rubber shell and the connected piece are well attracted in the process of constantly changing the gap, and the sealing effect can be further ensured.

Description

Sealing strip

Technical Field

The utility model relates to a sealing strip technical field especially relates to a sealing strip.

Background

The sealing strip has the functions of heat preservation, heat insulation, sound absorption, shock absorption and sealing, and is widely applied to the mechanical industry.

The sealing strip in the prior art is generally made of common rubber and is in a compressed state when in use. However, the force of compression deformation sometimes has adverse effects on the fit clearance of the connecting piece or the connected piece and the component, for example, in the case of sealing a cab door of an automobile or engineering machine, mechanical vibration causes the seal clearance between the connecting piece and the connected piece to be changed constantly, and the frequent compression deformation force of the sealing strip may cause the following situations:

1) the compression force can cause the rubber to generate permanent deformation, thereby affecting the sealing effect;

2) the gap is constantly changed, and the sealing effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the sealing strip is provided to solve the problem that the sealing strip in the prior art is poor in sealing effect under the condition of mechanical vibration.

The utility model provides a sealing strip for sealing connection spare and by the clearance between the connecting piece, the connecting piece with by the connecting piece formation by confined space, pass through confined space clearance and external atmosphere intercommunication, this sealing strip includes: the rubber shell comprises a first end and a second end which are oppositely arranged, the first end is arranged to be an inner concave surface and is used for being connected with the connected piece, and the second end is used for being connected with the connected piece; the rubber casing is internally provided with an air bag, the air bag is positioned between the first end and the second end, two opposite side walls of the air bag are respectively provided with a first vent hole and a second vent hole, the first vent hole can be communicated with the sealed space, and the second vent hole can be communicated with the external atmosphere.

Preferably, a mounting cavity is arranged in the rubber shell, a magnetic strip is mounted in the mounting cavity, the mounting cavity is opposite to the air bag and close to the connected piece, and the magnetic strip can be attracted by the connected piece through magnetism.

Preferably, the magnetic strip is a magnetic rubber strip.

Preferably, the second end is a plane, and the second end is adhered to the connecting piece.

Preferably, the second end is provided with a clamping portion, and the connecting piece is clamped with the clamping portion.

Preferably, the joint portion is made by the rubber material, be equipped with the draw-in groove in the joint portion, the draw-in groove is the U-shaped, the opening orientation of draw-in groove by the confined space, the connecting piece joint in the draw-in groove.

Preferably, the two inner walls opposite to the clamping groove are convexly provided with bulges, and the bulges are tightly propped against the connecting piece.

Preferably, the protrusion is made of a rubber material.

Preferably, a metal plate is embedded in the clamping portion and is arranged outside the clamping groove in a surrounding mode.

Preferably, the airbag is in a hexagonal prism shape, and the airbag is composed of a first side wall, a second side wall, a third side wall, a fourth side wall, a fifth side wall and a sixth side wall which are connected end to end in sequence, wherein the first side wall and the fourth side wall are respectively opposite to the connected piece and the connecting piece, the first vent hole and the second vent hole are oppositely arranged, the first vent hole is arranged at the joint of the second side wall and the third side wall, and the second vent hole is arranged at the joint of the fifth side wall and the sixth side wall.

The utility model has the advantages that:

the utility model provides a sealing strip, which comprises a rubber shell, wherein the rubber shell comprises a first end and a second end which are oppositely arranged, the first end is arranged as an inner concave surface and is used for being connected with a connected piece, and the second end is used for being connected with the connected piece; be equipped with the gasbag in the rubber housing, the gasbag is located between first end and the second end, is equipped with first air vent and second air vent on two relative lateral walls of gasbag respectively, and first air vent can communicate by confined space, and second air vent intercommunication can external atmosphere. When mechanical vibration leads to clearance constantly changing, the atmospheric pressure balance by confined space and external atmospheric is guaranteed to accessible first air vent and second air vent to guarantee sealed effect, and the concave surface can guarantee rubber housing and by the fine actuation of connecting piece at the in-process that the clearance constantly changed, make the sealing strip can freely change and adjust the shape along with the clearance, further guaranteed sealed effect.

Drawings

Fig. 1 is a first schematic structural diagram of a sealing strip in an embodiment of the present invention;

fig. 2 is a schematic structural diagram ii of the sealing strip in the embodiment of the present invention.

In the figure:

1. a connecting member; 2. a connected member;

3. a rubber housing; 31. an inner concave surface; 32. an air bag; 321. a first side wall; 322. a second side wall; 323. a third side wall; 324. a fourth side wall; 325. a fifth side wall; 326. a sixth side wall; 33. a first vent hole; 34. a second vent hole; 35. a mounting cavity;

4. a magnetic strip;

5. a clamping part; 51. a card slot; 52. a protrusion; 53. a metal plate.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 2, the present embodiment provides a sealing strip for sealing a gap between a connecting member 1 and a connected member 2, wherein the connecting member 1 and the connected member 2 form a sealed space, and the sealed space communicates with the outside atmosphere through the gap.

The sealing strip comprises a rubber shell 3, wherein the rubber shell 3 comprises a first end and a second end which are oppositely arranged, the first end is arranged to be an inner concave surface 31 and is used for being connected with a connected piece 2, and the second end is used for being connected with a connecting piece 1; the air bag 32 is arranged in the rubber shell 3, the air bag 32 is positioned between the first end and the second end, two opposite side walls of the air bag 32 are respectively provided with a first vent hole 33 and a second vent hole 34, the first vent hole 33 is communicated with a sealed space, and the second vent hole 34 is communicated with the outside atmosphere. It can be understood that, in the actual use process of the sealing strip, the sealing strip is in a compressed state, that is, the concave surface 31 is attached to the connected piece 2, when no mechanical vibration exists, the air pressure of the sealed space and the external atmosphere is balanced, and the first vent hole 33 and the second vent hole 34 are both in a closed state, so that a good sealing effect can be achieved; when mechanical vibration leads to the clearance constantly changing, there is the pressure differential by sealed space and external atmosphere, and atmospheric pressure acts on gasbag 32, and under atmospheric pressure, first venthole 33 and second venthole 34 can be opened passively to wait to be balanced by sealed space and external atmospheric pressure, first venthole 33 and second venthole 34 have guaranteed sealed effect. The concave surface 31 can ensure that the rubber shell 3 and the connected piece 2 are well attracted in the process that the gap is changed constantly, the shape of the sealing strip can be freely adjusted along with the change of the gap, and the sealing effect can be further ensured.

Optionally, a mounting cavity 35 is formed in the rubber housing 3, a magnetic strip 4 is mounted in the mounting cavity 35, the mounting cavity 35 is close to the connected piece 2 relative to the air bag 32, and the magnetic strip 4 can be attracted with the connected piece 2 through magnetism. Preferably, the magnetic strip 4 is a magnetic rubber strip. Can guarantee the first end of rubber housing 3 and closely the actuation by connecting piece 2 through setting up magnetic stripe 4, guarantee sealed effect, the magnetic stripe 4 of rubber material can be when the clearance change simultaneously, along with the shape adjustment. The magnetic rubber strip is made of permanent magnetic rubber magnetizing material, and is not described in detail herein.

Optionally, the air bag 32 is hexagonal prism-shaped, and the air bag 32 is composed of a first side wall 321, a second side wall 322, a third side wall 323, a fourth side wall 324, a fifth side wall 325 and a sixth side wall 326 which are connected end to end, wherein the first side wall 321 and the fourth side wall 324 are respectively opposite to the connected piece 2 and the connected piece 1, the first vent hole 33 and the second vent hole 34 are oppositely arranged, the first vent hole 33 is arranged at the connection position of the second side wall 322 and the third side wall 323, and the second vent hole 34 is arranged at the connection position of the fifth side wall 325 and the sixth side wall 326.

Optionally, as shown in fig. 1, the second end is a plane, and the second end is adhered to the connecting member 1.

Optionally, as shown in fig. 2, the second end is provided with a clamping portion 5, and the connecting member 1 is clamped with the clamping portion 5. Specifically, the clamping portion 5 is provided with a clamping groove 51, and the connecting member 1 is clamped in the clamping groove 51, it can be understood that the connecting member 1 is convex in this embodiment. In other embodiments, a clamping groove may be provided on the connecting member 1, and a clamping protrusion may be provided on the clamping portion 5, and the clamping groove is clamped with the clamping protrusion. In this embodiment, the engaging portion 5 is made of rubber, the engaging groove 51 is U-shaped, and an opening of the engaging groove 51 faces the sealed space.

Optionally, two opposite inner walls of the locking slot 51 are both provided with a protrusion 52 in a protruding manner, and the protrusion 52 abuts against the connecting element 1. Preferably, the projection 52 is made of a rubber material. In this embodiment, in two inner walls that draw-in groove 51 is relative, equal interval is equipped with a plurality of archs 52 on every inner wall, can guarantee through setting up protruding 52 that joint portion 5 and connecting piece 1 closely laminate, guarantee sealed effect.

Optionally, a metal plate 53 is embedded in the clamping portion 5, and the metal plate 53 surrounds the clamping groove 51. In this embodiment, the metal sheet 53 is the setting of U-shaped equally, through setting up metal sheet 53, can guarantee that joint portion 5 has certain intensity, prevents that joint portion 5 and connecting piece 1 from breaking away from.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A weather strip for sealing a gap between a connecting member (1) and a connected member (2), the connecting member (1) and the connected member (2) forming a sealed space, the sealed space communicating with the outside atmosphere through the gap, the weather strip comprising: the rubber shell (3) comprises a first end and a second end which are oppositely arranged, the first end is arranged to be an inner concave surface (31) and is used for being connected with the connected piece (2), and the second end is used for being connected with the connected piece (1); be equipped with gasbag (32) in rubber housing (3), gasbag (32) are located first end with between the second end, be equipped with first venthole (33) and second venthole (34) on two relative lateral walls of gasbag (32) respectively, first venthole (33) can communicate by the confined space, second venthole (34) can communicate external atmosphere.

2. The sealing strip according to claim 1, characterized in that a mounting cavity (35) is arranged in the rubber housing (3), a magnetic strip (4) is arranged in the mounting cavity (35), the mounting cavity (35) is close to the connected piece (2) relative to the air bag (32), and the magnetic strip (4) can be attracted with the connected piece (2) through magnetism.

3. Sealing strip according to claim 2, characterised in that the magnetic strip (4) is a magnetic rubber strip.

4. Sealing strip according to claim 1, characterised in that the second end is plane and that the second end is glued to the connecting piece (1).

5. The sealing strip according to claim 1, wherein the second end is provided with a clamping portion (5), and the connecting piece (1) is clamped with the clamping portion (5).

6. The sealing strip according to claim 5, wherein the clamping portion (5) is made of rubber, a clamping groove (51) is formed in the clamping portion (5), the clamping groove (51) is U-shaped, an opening of the clamping groove (51) faces the sealed space, and the connecting piece (1) is clamped in the clamping groove (51).

7. The sealing strip according to claim 6, wherein the opposite inner walls of the clamping groove (51) are both provided with a protrusion (52) in a protruding manner, and the protrusion (52) abuts against the connecting piece (1).

8. Sealing strip according to claim 7, characterised in that the protrusion (52) is made of a rubber material.

9. The sealing strip according to claim 6, wherein a metal plate (53) is embedded in the clamping portion (5), and the metal plate (53) surrounds the clamping groove (51).

10. Sealing strip according to claim 1, characterized in that the air bag (32) is hexagonal prism-shaped, the air bag (32) is composed of a first side wall (321), a second side wall (322), a third side wall (323), a fourth side wall (324), a fifth side wall (325) and a sixth side wall (326) which are connected end to end in sequence, wherein the first side wall (321) and the fourth side wall (324) are respectively opposite to the connected piece (2) and the connecting piece (1), the first vent hole (33) and the second vent hole (34) are oppositely arranged, the first vent hole (33) is arranged at the junction of the second side wall (322) and the third side wall (323), and the second vent hole (34) is arranged at the junction of the fifth side wall (325) and the sixth side wall (326).