CN215057956U - Fastening connection structure - Google Patents
Fastening connection structure Download PDFInfo
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- CN215057956U CN215057956U CN202120615170.6U CN202120615170U CN215057956U CN 215057956 U CN215057956 U CN 215057956U CN 202120615170 U CN202120615170 U CN 202120615170U CN 215057956 U CN215057956 U CN 215057956U
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- connecting hole
- connection structure
- fastening connection
- positioning pin
- hole
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Abstract
The utility model relates to a connection structure. The utility model provides a fastening connection structure, includes two first components and the second component of treating the connection, has seted up first connecting hole on first component, has seted up the second connecting hole on the second component, is the through-hole in the first connecting hole, and the second connecting hole is the shoulder hole, and the diameter of the last connecting hole section of second connecting hole is greater than the diameter of connecting hole section down, goes up the connecting hole section and is used for installing the locating pin cover. The utility model provides a fastening connection structure with simple assembly process, low cost and high production efficiency; the technical problems that a plurality of processing holes need to be processed in assembly, the processing process is complex, and the processing cost is high in the prior art are solved.
Description
Technical Field
The utility model relates to a connection structure especially relates to a need location fit's fastening connection structure.
Background
In modern society, automobiles have become one of the first-choice transportation tools for the public. The automobile industry develops rapidly, and along with the development of automobile performance towards safer, more reliable, more stable, full-automatic intelligent and environment-friendly energy-saving directions, the electronic oil pump is widely applied to an automobile lubricating system and/or a cooling system and can well meet the market requirements.
The electronic oil pump mainly provides a power source for a lubricating system and/or a cooling system of an automobile, power is provided for the electronic oil pump through rotation of a motor rotor, positioning pins are usually needed in the motor assembling process to ensure accurate positions of motor parts during installation, the positioning pins are mainly used for temporary positioning and guiding, after the matched parts are assembled in place, the locking effect is born by bolts or other fasteners, and the effect of the positioning pins can be ignored. However, the matching parts need to be provided with holes for accommodating the positioning pins, so that the process and the cost are increased as a whole.
The existing positioning pin product mostly adopts a metal pin rod or a metal pin sleeve, the material consumption is more, the processing cost is high, two matched parts are required to be processed to accommodate the pin sleeve, the processing process is complex, and the processing cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fastening connection structure with simple assembly process, low cost and high production efficiency; the technical problems that a plurality of processing holes need to be processed in assembly, the processing process is complex, and the processing cost is high in the prior art are solved.
The above technical problem of the present invention is solved by the following technical solutions: the utility model provides a fastening connection structure, includes two first components and the second component of treating the connection, has seted up first connecting hole on first component, has seted up the second connecting hole on the second component, is the through-hole in the first connecting hole, and the second connecting hole is the shoulder hole, and the diameter of the last connecting hole section of second connecting hole is greater than the diameter of connecting hole section down, goes up the connecting hole section and is used for installing the locating pin cover.
The first connecting hole is of an original structure, and only the second connecting hole is processed. The lower part of the hole is a threaded hole for accommodating the fastening of a bolt; the upper part is a smooth hole with larger aperture, the depth is the same as the length of the pin bush, and the locating pin bush is accommodated in the depth. Simple process and convenient operation. The positioning pin bush is incompletely put into the upper connecting hole section, protrudes by a section of height, plays a positioning effect, overcomes the interference resistance of the pin bush by means of screw thread screwing in when screwing in the bolt, and forcedly jacks the protruding height part into the hole, so that the design which disappears after guiding is realized, and the fastening effect of the bolt is not influenced. The design reduces the processing difficulty and cost of the positioning pin, improves the production efficiency, reduces the weight of parts, simultaneously reduces the structural complexity and the processing difficulty of accessories, and improves the comprehensive income.
Preferably, the upper connecting hole section and the positioning pin sleeve are in interference fit.
Preferably, the positioning pin sleeve is made of plastic. The plastic positioning pin sleeve is adopted for design, the inner diameter of the positioning pin sleeve is larger than the nominal diameter of the bolt, and the outer diameter of the positioning pin sleeve is in interference fit with the upper part hole. The plastic positioning pin bush is not completely pressed into the hole during assembly, and the depth of the hole is the same as the length of the positioning pin bush. The guiding function is realized by a length which is not pressed in. After the guided part is assembled in place, the subsequent bolt penetrates through the positioning pin sleeve, and the fastener penetrates through the positioning pin sleeve and is pressed into the pin sleeve along with the subsequent fastener installation. Finally, the positioning guide and appearance hiding effects are achieved simultaneously.
Preferably, the diameter of the through hole at the center of the positioning pin sleeve is larger than the outer diameter of the bolt.
Preferably, one end of the upper connecting hole section is provided with a lead-in inclined plane. The installation and the entering of the positioning pin bush are facilitated.
Preferably, the length of the upper connecting hole section is not less than the length of the positioning pin sleeve.
Therefore, the utility model discloses a fastening connection structure possesses following advantage: a plastic positioning pin sleeve is used, a hole is machined in one of the pair of accessories, positioning and guiding effects in the assembling process are met by virtue of small interference, and a rear fastener penetrates through the positioning pin sleeve and is pressed in along the situation when being installed. Finally, the processing procedures of the two pairs of accessories are reduced, the processing cost is reduced, and the production efficiency is improved.
Drawings
Fig. 1 is a perspective view of a fastening structure of the present invention.
Fig. 2 is a sectional view in fig. 1.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 and 2, a fastening connection structure comprises a motor housing 1 and a pump body 2 which need to be connected with each other, wherein a first connection hole 3 is formed in the outer edge of the motor housing 1, and a second connection hole 4 is formed in the pump body 2. The axes of the first connection hole 3 and the second connection hole 4 coincide. The second connecting hole 4 is a stepped hole, the diameter of the upper connecting hole section 7 is larger than that of the lower connecting hole section 8, the upper connecting hole section 7 is a unthreaded hole, and the lower connecting hole section 8 is a threaded hole. And a positioning pin sleeve 6 is arranged in the upper connecting hole section 7, and the positioning pin sleeve 6 is circular. Due to the small interference design of the outer diameter of the dowel sleeve 6 and the upper connecting bore section 7, the dowel sleeve is not completely pressed into the upper connecting bore section 7 during assembly, wherein the depth of the upper connecting bore section 7 is the same as the length of the dowel sleeve 6. The guiding function is realized by the length of the positioning pin sleeve 6 which is not pressed in. And after the motor shell 2 is installed in place, the bolt 5 penetrates through the first connecting hole 3 and then penetrates into the hollow hole of the positioning pin sleeve 6, the interference resistance of the pin sleeve is overcome by screwing in the bolt through threads, and the residual length positioning pin sleeve 6 is forcedly pushed into the second connecting hole 4, so that the design that disappears after guiding is realized, and the fastening effect of the bolt 5 is not influenced.
Claims (6)
1. A fastening connection structure characterized in that: including two first components and the second component of treating the connection, seted up first connecting hole on first component, seted up the second connecting hole on the second component, be the through-hole in the first connecting hole, the second connecting hole is the shoulder hole, and the diameter of the last connecting hole section of second connecting hole is greater than the diameter of connecting hole section down, goes up the connecting hole section and is used for installing the locating pin cover.
2. A fastening connection structure according to claim 1, characterized in that: the upper connecting hole section is in interference fit with the positioning pin sleeve.
3. A fastening connection structure according to claim 1 or 2, characterized in that: the positioning pin sleeve is made of plastic.
4. A fastening connection structure according to claim 1 or 2, characterized in that: the diameter of the through hole in the center of the positioning pin sleeve is larger than the outer diameter of the bolt.
5. A fastening connection structure according to claim 1 or 2, characterized in that: one end of the upper connecting hole section is provided with a lead-in inclined plane.
6. A fastening connection structure according to claim 1 or 2, characterized in that: the length of the upper connecting hole section is not less than that of the positioning pin sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120615170.6U CN215057956U (en) | 2021-03-26 | 2021-03-26 | Fastening connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120615170.6U CN215057956U (en) | 2021-03-26 | 2021-03-26 | Fastening connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215057956U true CN215057956U (en) | 2021-12-07 |
Family
ID=79150987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120615170.6U Active CN215057956U (en) | 2021-03-26 | 2021-03-26 | Fastening connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215057956U (en) |
-
2021
- 2021-03-26 CN CN202120615170.6U patent/CN215057956U/en active Active
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