CN217553672U

CN217553672U - Size shrinkage prevention sealing strip and vehicle

Info

Publication number: CN217553672U
Application number: CN202221110936.6U
Authority: CN
Inventors: 邵永民; 吕碧坤; 龙湘鄂
Original assignee: Changsha Yongchang Automobile Parts Co ltd
Current assignee: Changsha Yongchang Automobile Parts Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-10-11
Anticipated expiration: 2032-05-10

Abstract

The utility model discloses a sealing strip for preventing size shrinkage and a vehicle, wherein the sealing strip is an elastic strip and comprises a bottom edge and an arc-shaped edge, and a buffer cavity is formed by connecting and surrounding two sides of the bottom edge and the arc-shaped edge; a fixing wire is axially arranged in the sealing strip, the fixing wire is a hard wire, and the fixing wire is vulcanized and bonded with the sealing strip; the fixed wire is set to be one, or the fixed wire is set to be many and evenly distributed in base and arc limit. When the sealing strip is impacted and extruded, the arc-shaped edge is sunken, the buffer cavity buffers the sealing strip, and the fillet at the connecting part of the bottom edge and the two sides of the arc-shaped edge increases the radial extension range of the impacted arc-shaped edge, so that the buffer effect is improved; the fixed silk in the sealing strip uses hard material to make, has not axial compressibility, can further reduce the sealing strip axial dimension that leads to by the striking and stretch or shrink or other external factors arouse the influence of sealing strip dimensional change, increases the life of sealing strip, promotes sealing performance.

Description

Size shrinkage prevention sealing strip and vehicle

Technical Field

The utility model relates to an automobile parts field especially relates to a prevent sealing strip of size shrink. Furthermore, the utility model discloses still relate to a vehicle of including above-mentioned sealing strip that prevents the size shrink.

Background

In recent years, with the rise of the automobile industry in China, automobiles become more and more popular and enter thousands of households, so that the automobile sealing strip plays an indispensable role in comfortable and convenient driving experience of users, such as water resistance, dust prevention, sound insulation and the like.

The sealing strip is made of rubber materials, and has elasticity, an internal stress exists in the extrusion and traction process of a sealing strip product, an internal stress eliminating process exists in a semi-finished product after extrusion and vulcanization, the process can cause product size shrinkage, the stability is poor, the sealing performance of the product is influenced, the product size reject ratio is high, and the production cost is high.

After the sealing strip is put into use, the sealing strip is inevitably extruded, drawn and even impacted, and is influenced by external environmental factors, so that the size of the sealing strip is changed, and the service life of the sealing strip is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prevent sealing strip of size shrink to solve the technical problem of current sealing strip length dimension shrink.

The utility model adopts the technical scheme as follows:

the sealing strip is an elastic strip and comprises a bottom edge and an arc-shaped edge, and at least one side of the bottom edge and at least one side of the arc-shaped edge are connected and surrounded to form a buffer cavity; the sealing strip is internally and axially provided with a fixing wire which is a hard wire; the fixing wire is arranged to be one, or the fixing wires are arranged to be multiple and are uniformly distributed in the bottom edge and/or the arc-shaped edge.

Further, at least one side of the arc-shaped edge extends to form a lip edge.

Further, the fixing wire is a fiber wire or a copper wire or a fiber bundle wire or a copper bundle wire.

Further, the diameter of the fixing wire is 0.3-0.8 mm.

Further, the diameter of the fixing wire is 0.5 mm.

Further, the sealing strip is a rubber strip.

Furthermore, the fixed silk is provided with 1, the fixed silk set up in the central axis of base.

Further, the bottom edge is a hard glue layer, and the arc-shaped edge is a soft glue layer.

According to the utility model discloses an on the other hand still provides a vehicle, uses to have above arbitrary the sealing strip that prevents the size shrink, the surface integrated into one piece on the base of sealing strip has the installation department.

The utility model discloses following beneficial effect has:

the sealing strip can be arranged on the inner side or the outer side of the edge of the vehicle door so as to protect the vehicle door from being impacted with a door frame when the vehicle door is closed, or damage vehicle paint when the vehicle door is mistakenly impacted with a wall body, a column body or other vehicles when the vehicle door is opened; can also be arranged at the edge of the car window frame; when the sealing strip is impacted and extruded, the arc-shaped edge is sunken, and the buffer cavity buffers the sealing strip; the fixed silk in the sealing strip uses hard material to make, has not axial compressibility, and when the sealing strip frequently received friction, striking, the fixed silk also can further reduce the sealing strip axial dimension that leads to by the striking and stretch or shrink and other external factors arouse the influence of sealing strip dimensional change, effectively increases the life of sealing strip, promotes sealing performance.

The fixing wire in the sealing strip is made of hard materials, has non-axial compressibility, and can resist the internal stress of the extruded and vulcanized semi-finished sealing strip, so that the shrinkage of the axial dimension of the sealing strip body is avoided, the dimension reject ratio of the sealing strip is effectively reduced, and the qualification rate and the stability are improved; it should be noted that the sealing strip can be produced in large scale under the existing equipment and process conditions, and the comprehensive cost is effectively reduced.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

1. sealing strip 11, bottom edge 12, arc edge 13, buffer cavity 14, fillet 15, lip edge 2 and fixing wire

FIG. 1 is a cross-sectional view of a preferred embodiment of the invention;

fig. 2 is a cross-sectional view of another embodiment of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, a preferred embodiment of the present invention provides a sealing strip for preventing dimensional shrinkage, the sealing strip 1 is made of an elastic material, typically a rubber material, which is preferred in this embodiment, and may be a material such as plastic in other embodiments, which should not be limited thereto;

the sealing strip 1 comprises a bottom edge 11 and an arc-shaped edge 12, a buffer cavity 13 is formed around the connection of the two sides of the bottom edge 11 and the arc-shaped edge 12, a fillet 14 is formed at the connection part of the bottom edge 11 and the arc-shaped edge 12, a preset number of fixing wires 2 are axially and integrally formed in the sealing strip 1, and the fixing wires 2 are made of hard materials.

The sealing strip 1 can be arranged on the inner side or the outer side of the edge of the automobile door so as to protect the automobile door from colliding with a door frame when the automobile door is closed or damage automobile paint when the automobile door collides with a wall body, a column body or other vehicles by mistake when the automobile door is opened; can also be arranged at the edge of the car window frame; when the sealing strip 1 is impacted, the arc-shaped edge 12 is sunken, the buffer cavity 13 buffers the arc-shaped edge to reduce vibration, and the fillet 14 at the joint of the bottom edge 11 and the two sides of the arc-shaped edge 12 increases the radial extension range of the impacted arc-shaped edge 12 to improve the buffer effect; the fixing wire 2 in the sealing strip 1 is made of hard materials, and has non-axial compressibility, and when the sealing strip 1 is frequently rubbed, impacted and extruded, the fixing wire 2 can further reduce the influence of the dimensional change of the sealing strip 1 caused by the stretching or shrinking of the axial dimension of the sealing strip 1 caused by the impact and other external factors, so that the service life of the sealing strip 1 is effectively prolonged, and the sealing performance is improved.

It should be noted that, the sealing strip 1 and the fixing wire 2 are integrally formed in production by using a vulcanization bonding mode, that is, the sealing strip 1 and the fixing wire 2 made of rubber materials are bonded by special adhesive and then are compositely vulcanized and extruded, so that the sealing strip and the fixing wire are connected more stably, and the performances of preventing size stretching and stretching are improved; it should be understood that the above axial direction is the extrusion direction of the production molding of the sealing tape 1 body.

The fixing wire 2 in the sealing strip 1 is not axially compressible and is also used for resisting the internal stress of a semi-finished product of the extruded and vulcanized sealing strip 1, so that the axial size shrinkage of the sealing strip 1 body is avoided, the size reject ratio of the sealing strip 1 is effectively reduced, and the qualification rate and the stability are improved; it should be noted that the sealing strip 1 can be mass produced in large scale under the existing equipment and process conditions, and the comprehensive cost is effectively reduced.

In some embodiments, a lip 15 is formed by extending one side of the arc-shaped edge 12, so that the adhesion surface of the sealing strip 1 and the corresponding connecting position is increased, the sealing is more tightly fitted and sealed by matching with the bottom edge 11, and the sealing effect is improved.

Further, the fixing wire 2 of the present embodiment is preferably a fiber or copper wire, or a fiber bundle wire composed of bundled fiber wires, or a copper bundle wire composed of bundled copper wires; the cost is low, the axial non-contractibility performance is excellent, and the vulcanization bonding effect with the sealing strip 1 is good.

Specifically, the fixing wire 2 of the present embodiment is provided with one wire, and the diameter of the wire is preferably 0.5 mm; in other embodiments, the diameter of the fixing wire 2 is adapted to be 0.3-0.8 mm according to actual conditions, according to different setting numbers (such as setting as a fiber bundle, or multiple distribution settings) and material selection of the fixing wire 2.

Further, the fixing wire 2 of the present embodiment is preferably disposed on the central axis of the bottom edge 11; when the arc-shaped edge 12 is rubbed and impacted, the bottom edge 11 is stressed and dimensionally stretched at the same time, the bottom edge 11 serves as a connecting surface, the dimensional stretching or shrinking influences the sealing effect of the connecting position, the fixing wire 2 is arranged on the central axis of the bottom edge 11, more emphasis is placed on preventing the dimensional stretching and shrinking of the bottom edge 11, and the overall sealing effect and the service life of the sealing strip 1 are improved.

In some embodiments, in order to further improve the effect of preventing the dimensional stretching and shrinking of the sealing strip 1, at least two fixing wires 2 are provided, and the fixing wires 2 are uniformly distributed in the bottom edge 11 and the arc-shaped edge 12.

In some embodiments, the bottom edge 11 of the sealing strip 1 is made of a hard adhesive layer, and the arc-shaped edge 12 is made of a soft adhesive layer; for example, the bottom edge 11 is a rubber layer or a plastic layer, and the arc edge 12 is a silica gel layer or a sponge gel layer; the bottom edge 11 is also a connecting layer, a hard glue layer is used for ensuring the stability during connection and reducing deformation, and meanwhile, the size deformation of the connected bottom edge 11 is further reduced by matching with the fixing wires 2, so that the conditions of loosening and the like are avoided; the arc-shaped edge 12 is matched with the buffer cavity 13 by using a soft glue layer so as to improve the buffer effect.

In another embodiment, referring to fig. 2, the weather strip 1 includes a bottom edge 11 and an arc-shaped edge 12, a cushion chamber 13 is formed around one side of the bottom edge 11 and the arc-shaped edge 12, and the bottom edge 11 is glued to the mounting position connecting the door sash or the door sash edge, close to the inner wall of the cushion chamber; at the moment, the buffer cavity 13 is actually formed between the arc-shaped edge 12 and the vehicle door, so that the structure is more compact; in order to save the manufacturing cost and maintain the effect of preventing the dimensional shrinkage, the fixing wire 2 of this embodiment is disposed near the center of the weather strip 1 at a position substantially equally distant from the inner and outer walls of the axis.

A vehicle, employ the above-mentioned weather strip preventing dimensional contraction, the outer surface of bottom edge 11 of the weather strip 1 has mounting portions; the mounting part can be an adhesive layer, that is, the sealing strip is adhered to the edge of the vehicle door through a sealant; the mounting part can also be a U-shaped sealing structure which is integrally formed with the sealing strip 1, and the inner side of the mounting part is provided with sealing teeth to be mounted on the automobile door window frame; it should be understood that the mounting portion should be adaptively configured according to a specific application and a mounting position.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The sealing strip for preventing size shrinkage is characterized in that the sealing strip (1) is an elastic strip, the sealing strip (1) comprises a bottom edge (11) and an arc-shaped edge (12), and a buffer cavity (13) is formed by connecting and surrounding at least one side of the bottom edge (11) and the arc-shaped edge (12); a fixing wire (2) is axially arranged in the sealing strip (1), and the fixing wire (2) is a hard wire; the fixing wire (2) is one, or the fixing wires (2) are arranged into a plurality of wires and are uniformly distributed in the bottom edge (11) and/or the arc-shaped edge (12).

2. The dimensional contraction prevention sealing tape according to claim 1, wherein at least one side of the arc-shaped edge (12) is extended to form a lip (15).

3. The weather strip for preventing dimensional shrinkage according to claim 1, wherein the fixing wire (2) is a fiber wire or a copper wire or a fiber bundle wire or a copper bundle wire.

4. A seal strip for preventing dimensional shrinkage according to claim 3, wherein the diameter of the fixing wire (2) is 0.3-0.8 mm.

5. The seal strip for preventing dimensional shrinkage according to claim 4, wherein the diameter of the fixing wire (2) is 0.5 mm.

6. A dimensionally shrinkage-preventing weather strip according to any one of claims 1 to 5, wherein the weather strip (1) is a rubber strip.

7. The dimensional shrinkage prevention weatherstrip according to any one of claims 1 to 5, wherein 1 fixing wire (2) is provided, and the fixing wire (2) is provided on a central axis of the bottom edge (11).

8. A weatherstrip according to any one of claims 1 to 5 wherein said bottom edge (11) is a layer of hard glue and said arcuate edge (12) is a layer of soft glue.

9. A dimensionally shrinkage-preventing sealing tape according to any one of claims 1 to 5, wherein the fixing wire (2) is vulcanization bonded to the sealing tape (1).

10. A vehicle characterized by using the weather strip for preventing dimensional shrinkage according to any one of claims 1 to 9, the weather strip (1) being provided with a mounting portion on an outer surface of a bottom edge (11).