CN211543534U - Fastener for connecting composite material vehicle body - Google Patents
Fastener for connecting composite material vehicle body Download PDFInfo
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- CN211543534U CN211543534U CN202020066555.7U CN202020066555U CN211543534U CN 211543534 U CN211543534 U CN 211543534U CN 202020066555 U CN202020066555 U CN 202020066555U CN 211543534 U CN211543534 U CN 211543534U
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- Prior art keywords
- fastener
- composite material
- glue
- vehicle body
- cylindrical body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
A fastener for connecting a composite material vehicle body is characterized in that: the connecting fastener comprises a cylindrical body and flanges positioned on the upper surface and the lower surface of the cylindrical body, wherein a plurality of glue injection holes are uniformly formed in the upper flange and form glue injection channels with the periphery of the outer wall of the cylindrical body, so that the connecting fastener is firmly connected with mounting holes pre-opened on a composite material vehicle body, a glue layer with enough thickness is ensured between the fastener and the composite material, the electrochemical corrosion is avoided, the diameter of the lower flange is larger than that of the cylindrical body, and the lower flange is wrapped by a glue cluster, so that the connecting fastener is effectively prevented from falling off; a threaded hole is processed from the upper flange to the center of the columnar body and is used for connecting parts; the novel car body connecting fastener ensures that a glue layer with enough thickness is arranged between the fastener and the composite material, avoids electrochemical corrosion between a metal piece and the composite material, and fills the gap of the existing railway vehicle equipment field fastener.
Description
Technical Field
The utility model relates to a connecting piece especially relates to a fastener that is fit for combined material and connects usefulness.
Background
At present, the body structure of the railway vehicle is usually made of metal materials such as aluminum alloy, stainless steel, carbon steel and the like, and the connection of parts is realized by welding. With the increasing demand of light weight of the car body, the light composite car body is produced. Although the composite material vehicle body has obvious advantages, the connection of the parts and the vehicle body cannot be realized by the traditional welding means due to various and complex material properties, and is usually realized by gluing or fastening piece connection. When in gluing, the gluing surface of the part is glued with the surface of the vehicle body, and the glue layer is easy to crack under the action of tensile stress and stripping force, so that the glued part falls off, and the connection reliability is low; the fastening connection is usually realized by firstly embedding a steel plate in the composite material vehicle body and then fixing parts on the embedded steel plate by using screws. The mode needs to be turned on to drill and tap, is difficult to construct and high in labor intensity, and has the risk of electrochemical corrosion between the embedded steel plate and the composite material. The other fastening connection mode is that a steel wire threaded sleeve or a rivet nut is arranged on the composite material vehicle body in advance, and the parts are fixed on the steel wire threaded sleeve or the rivet nut through screws. The mode also has the problems that the installation reliability of the screw sleeve or the rivet nut is low, the screw sleeve or the rivet nut is easy to fall off, and the risk of electrochemical corrosion exists between the screw sleeve or the rivet nut and the composite material. Therefore, a novel vehicle body connecting fastener which is suitable for composite material parts, high in reliability and simple to operate must be found, and the problem of connecting the composite material vehicle body parts is solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the problems that the connecting structure of the part and the composite material vehicle body is low in reliability and poor in operation manufacturability and electrochemical corrosion is easy to occur between the metal connecting structure and the composite material in the past are solved.
In order to realize the above object of the present invention, the present invention provides a fastener for connecting composite material car bodies, which is characterized in that: the connecting fastener comprises a cylindrical body and flanges positioned on the upper surface and the lower surface of the cylindrical body, wherein a plurality of glue injection holes are uniformly formed in the upper flange and form glue injection channels with the periphery of the outer wall of the cylindrical body, so that the connecting fastener is firmly connected with mounting holes pre-opened on a composite material vehicle body, a glue layer with enough thickness is ensured between the fastener and the composite material, the electrochemical corrosion is avoided, the diameter of the lower flange is larger than that of the cylindrical body, and the lower flange is wrapped by a glue cluster, so that the connecting fastener is effectively prevented from falling off; and a threaded hole is processed from the upper flange to the center of the cylindrical body and is used for connecting parts.
The glue injection hole is positioned on the part of the boss of the upper flange protruding out of the columnar body.
The outer edge of the lower flange is arranged in a projection area in the vertical direction of the glue injection hole.
The depth of the columnar internal thread hole is 3/4 of the height of the columnar body.
The utility model forms a glue filling channel with the periphery of the outer wall of the columnar body by arranging the glue filling hole on the upper flange, and forms a bonding glue layer with a space non-single plane between the fastener and the composite material mounting hole, so that the fastener is firmly connected with the composite material, and the problems that the bonding structure with a single structure and a plane is not high in reliability and a bonded piece is easy to fall off are solved; the novel vehicle body connecting fastener has a simple structure, a clear process mode and no high manufacturing threshold, and can well meet related use requirements; the novel car body connecting fastener ensures that a glue layer with enough thickness is arranged between the fastener and the composite material, avoids electrochemical corrosion between a metal piece and the composite material, and fills the gap of the existing railway vehicle equipment field fastener.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a top view of fig. 1.
Detailed Description
Referring to fig. 1 and 2, the embodiment of the present invention includes a column-shaped body 2, and an upper flange 1 and a lower flange 4 located on the upper and lower surfaces of the column-shaped body, wherein the upper flange protrudes out of the boss of the column-shaped body and is uniformly provided with 2-6 glue injection holes 6, and forms a glue injection channel 5 with the periphery of the outer wall of the column-shaped body, so as to realize the firm connection between the connecting fastener and the mounting hole pre-opened on the composite material vehicle body, and simultaneously ensure that a glue layer with enough thickness is provided between the fastener and the composite material, thereby avoiding the occurrence of electrochemical corrosion, the lower flange is wrapped by the glue cluster, and effectively preventing the connecting fastener from falling off; threaded holes 3 are processed from the upper flange to the columnar body, and the depth of the threaded holes in the columnar body is 3/4 of the height of the columnar body, so that the threaded holes are used for effectively connecting other parts of a vehicle body. The outer edge of the lower flange is arranged in a projection area in the vertical direction of the glue injection hole, so that the fastener is reliably connected with the vehicle body.
Claims (4)
1. A fastener for connecting a composite material vehicle body is characterized in that: the glue-pouring structure comprises a cylindrical body and flanges positioned on the upper surface and the lower surface of the cylindrical body, wherein a plurality of glue-pouring holes are uniformly formed in the upper flange, glue-pouring channels are formed around the outer wall of the cylindrical body and are used for connecting a fastening piece and a composite material vehicle body, the glue layer avoids electrochemical corrosion between the fastening piece and the composite material, the diameter of the lower flange is larger than that of the cylindrical body, and the lower flange is wrapped by a glue ball and is used for preventing the fastening piece from falling off; and a threaded hole is processed from the upper flange to the center of the cylindrical body and is used for connecting parts.
2. The composite vehicle body attachment fastener of claim 1, wherein: the glue injection hole is positioned on the part of the boss of the upper flange protruding out of the columnar body.
3. The composite vehicle body attachment fastener of claim 1, wherein: the outer edge of the lower flange is arranged in a projection area in the vertical direction of the glue injection hole.
4. The composite vehicle body attachment fastener of claim 1, wherein: the depth of the columnar internal thread hole is 3/4 of the height of the columnar body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066555.7U CN211543534U (en) | 2020-01-13 | 2020-01-13 | Fastener for connecting composite material vehicle body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066555.7U CN211543534U (en) | 2020-01-13 | 2020-01-13 | Fastener for connecting composite material vehicle body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211543534U true CN211543534U (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020066555.7U Active CN211543534U (en) | 2020-01-13 | 2020-01-13 | Fastener for connecting composite material vehicle body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211543534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111038538A (en) * | 2020-01-13 | 2020-04-21 | 中车长春轨道客车股份有限公司 | Fastener for connecting composite material vehicle body |
-
2020
- 2020-01-13 CN CN202020066555.7U patent/CN211543534U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111038538A (en) * | 2020-01-13 | 2020-04-21 | 中车长春轨道客车股份有限公司 | Fastener for connecting composite material vehicle body |
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