CN204295604U - A kind of error prevention device - Google Patents
A kind of error prevention device Download PDFInfo
- Publication number
- CN204295604U CN204295604U CN201420766820.7U CN201420766820U CN204295604U CN 204295604 U CN204295604 U CN 204295604U CN 201420766820 U CN201420766820 U CN 201420766820U CN 204295604 U CN204295604 U CN 204295604U
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- Prior art keywords
- prevention device
- error prevention
- cam
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- hole
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Abstract
The utility model discloses a kind of error prevention device, comprise in order to detect be whether admission cam the first error prevention device and be whether the second error prevention device of exhaust cam in order to detect; First error prevention device and the second error prevention device are cylinder, and cylindrical center is provided with the spindle hole that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin, first error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of admission cam in order to alignment pin, and the second error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of exhaust cam in order to alignment pin.First error prevention device is identical with the diameter of the spindle hole of the second error prevention device.First error prevention device is identical with the diameter in the mistake proofing hole of the second error prevention device.First error prevention device is identical with the diameter of the locating hole of the second error prevention device.Above-mentioned error prevention device, effectively can judge that cam is admission cam or exhaust cam.
Description
Technical field
The utility model relates to mechanical engineering technical field, particularly a kind of error prevention device.
Background technology
Along with the fast development of China's economic construction, market increases day by day for various types of demand misplacing device.
We know, for cam product, generally can be divided into admission cam and exhaust cam; The end face of admission cam and exhaust cam has passage, and these two kinds of cams are only that there is difference slightly the position of passage; Because these two kinds of cams have less difference, therefore easily cause loading error, cause and error is installed.
Therefore, how avoiding installing error is the current technical issues that need to address of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of error prevention device, and this error prevention device can solve the problem of the installation error of cam.
For achieving the above object, the utility model provides a kind of error prevention device, described error prevention device comprise in order to detect be whether admission cam the first error prevention device and be whether the second error prevention device of exhaust cam in order to detect; Described first error prevention device and described second error prevention device are cylinder, and described cylindrical center is provided with the spindle hole that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin, described first error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of described admission cam in order to alignment pin, and described second error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of described exhaust cam in order to alignment pin.
Preferably, described first error prevention device is identical with the diameter of the spindle hole of described second error prevention device.
Preferably, described first error prevention device is identical with the diameter in the mistake proofing hole of described second error prevention device.
Preferably, described first error prevention device is identical with the diameter of the locating hole of described second error prevention device.
Preferably, the scope of the height of described first error prevention device and described second error prevention device is between 2cm ~ 15cm.
Relative to above-mentioned background technology, the error prevention device that the utility model provides, comprise in order to detect be whether admission cam the first error prevention device and be whether the second error prevention device of exhaust cam in order to detect; First error prevention device and the second error prevention device are cylinder, and cylindrical center is provided with the spindle hole that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin, first error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of admission cam in order to alignment pin, and the second error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of exhaust cam in order to alignment pin.Adopt such set-up mode, can the main shaft of cam be inserted in the spindle hole of error prevention device, then alignment pin is inserted in the locating hole of error prevention device, head sizes due to alignment pin is greater than the size of the locating hole of error prevention device, therefore the head of alignment pin is positioned at the outside of locating hole, protrudes from the end face of error prevention device.Then, by the blow vent of the cam be positioned on error prevention device and the head fits of alignment pin of end face protruding from error prevention device; In addition, be positioned in the mistake proofing hole of error prevention device by mistake proofing pin, and the head sizes of mistake proofing pin is greater than the size in the mistake proofing hole of error prevention device, therefore the head of mistake proofing pin is positioned at the outside in mistake proofing hole, protrudes from the end face of error prevention device.So, if this cam is exhaust cam, and this exhaust cam is placed on the second error prevention device, then the mistake proofing pin be positioned on error prevention device can match with the convex closure of this exhaust cam, thus to pick out this cam be exhaust cam; If this cam is admission cam, and this admission cam is placed on the second error prevention device, then the mistake proofing pin be positioned on error prevention device can block the convex closure of this admission cam, thus to pick out this cam be admission cam.
Accompanying drawing explanation
The cross-sectional view of the first error prevention device that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the schematic diagram of the plan structure in Fig. 1;
The cross-sectional view of the second error prevention device that Fig. 3 provides for the utility model embodiment;
Fig. 4 is the schematic diagram of the plan structure in Fig. 3.
Detailed description of the invention
Core of the present utility model is to provide a kind of error prevention device, and this error prevention device can judge that cam is admission cam or exhaust cam.
In order to make those skilled in the art understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1 to Fig. 4, the cross-sectional view of the first error prevention device that Fig. 1 provides for the utility model embodiment; Fig. 2 is the schematic diagram of the plan structure in Fig. 1; The cross-sectional view of the second error prevention device that Fig. 3 provides for the utility model embodiment; Fig. 4 is the schematic diagram of the plan structure in Fig. 3.
Error prevention device provided by the utility model, comprise in order to detect be whether admission cam the first error prevention device 10 and be whether the second error prevention device 20 of exhaust cam in order to detect; First error prevention device 10 and the second error prevention device 20 are cylinder, and the center of the first error prevention device 10 is provided with the spindle hole 13 that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin 11; The center of the second error prevention device 20 is provided with the spindle hole 23 that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin 21; First error prevention device 10 is also provided with and inserts and the locating hole coordinated with the blow vent of admission cam in order to alignment pin 12, and the second error prevention device 20 is also provided with and inserts and the locating hole coordinated with the blow vent of exhaust cam in order to alignment pin 22.
Adopt such set-up mode, can the main shaft of cam be inserted in the spindle hole of error prevention device, then alignment pin is inserted in the locating hole of error prevention device, head sizes due to alignment pin is greater than the size of the locating hole of error prevention device, therefore the head of alignment pin is positioned at the outside of locating hole, protrudes from the end face of error prevention device.Then, by the blow vent of the cam be positioned on error prevention device and the head fits of alignment pin of end face protruding from error prevention device; In addition, be positioned in the mistake proofing hole of error prevention device by mistake proofing pin, and the head sizes of mistake proofing pin is greater than the size in the mistake proofing hole of error prevention device, therefore the head of mistake proofing pin is positioned at the outside in mistake proofing hole, protrudes from the end face of error prevention device.
So, if this cam is exhaust cam, and this exhaust cam is placed on the second error prevention device 20, then the mistake proofing pin 21 be positioned on error prevention device 20 can match with the convex closure of this exhaust cam, thus to pick out this cam be exhaust cam; If this cam is admission cam, and this admission cam is placed on the second error prevention device 20, then the mistake proofing pin 21 be positioned on error prevention device 20 can block the convex closure of this admission cam, thus to pick out this cam be admission cam.
Similar, if this cam is exhaust cam, and this exhaust cam is placed on the first error prevention device 10, then the mistake proofing pin 11 be positioned on error prevention device 10 blocks the convex closure of this admission cam, thus to pick out this cam be exhaust cam; If this cam is admission cam, and this admission cam is placed on the first error prevention device 10, then the mistake proofing pin 11 be positioned on error prevention device 10 can match with the convex closure of this exhaust cam, thus to pick out this cam be admission cam.
In addition, according to practical experience, for the first error prevention device 10, the line in the center of circle in the center of circle of spindle hole 13 and mistake proofing hole is called the first straight line by us, the line in the center of circle of spindle hole 13 and the center of circle of locating hole is called the second straight line, and the scope of the acute angle between the first straight line and the second straight line is arranged on 55 ° ~ 60 °.
For the second error prevention device 20, the line in the center of circle in the center of circle of spindle hole 23 and mistake proofing hole is called the 3rd straight line by us, the line in the center of circle of spindle hole 23 and the center of circle of locating hole is called the 4th straight line, and the scope of the acute angle between the 3rd straight line and the 4th straight line is arranged on 69 ° ~ 72 °.
That is, different from the position at the passage place of admission cam for exhaust cam, the position of the locating hole on error prevention device is arranged on diverse location, thus in order to distinguish that cam is exhaust cam or admission cam.
Certainly, the spindle hole 13 of the first error prevention device 10 can be set to identical with the diameter of the spindle hole 23 of the second error prevention device 20 by we.
According to practical experience, exhaust cam is identical with the diameter of the main shaft of admission cam, and therefore the spindle hole 13 of the first error prevention device 10 is set to identical with the diameter of the spindle hole 23 of the second error prevention device 20 by we.
In addition, the mistake proofing hole of the first error prevention device 10 can be set to identical with the diameter in the mistake proofing hole of the second error prevention device 20 by we.Certainly, the locating hole of the first error prevention device 10 also can be set to identical with the diameter of the locating hole of the second error prevention device 20.To repeat no more herein.
In addition, the scope of the height of the first error prevention device 10 and the second error prevention device 20 can be arranged between 2cm ~ 15cm by we.
We can adopt the first error prevention device 10 and the second error prevention device 20 of 2cm height, effectively can detect that cam is exhaust cam or admission cam; In addition, the height of the first error prevention device 10 and the second error prevention device 20 can also be set to 15cm by us, can realize above-mentioned purpose equally; Certainly, different height is also set, repeats no more herein.
Above error prevention device provided by the utility model is described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (5)
1. an error prevention device, is characterized in that, described error prevention device comprise in order to detect be whether admission cam the first error prevention device and be whether the second error prevention device of exhaust cam in order to detect; Described first error prevention device and described second error prevention device are cylinder, and described cylindrical center is provided with the spindle hole that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin, described first error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of described admission cam in order to alignment pin, and described second error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of described exhaust cam in order to alignment pin.
2. error prevention device according to claim 1, is characterized in that, described first error prevention device is identical with the diameter of the spindle hole of described second error prevention device.
3. error prevention device according to claim 2, is characterized in that, described first error prevention device is identical with the diameter in the mistake proofing hole of described second error prevention device.
4. error prevention device according to claim 3, is characterized in that, described first error prevention device is identical with the diameter of the locating hole of described second error prevention device.
5. error prevention device according to claim 1, is characterized in that, the scope of the height of described first error prevention device and described second error prevention device is between 2cm ~ 15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766820.7U CN204295604U (en) | 2014-12-08 | 2014-12-08 | A kind of error prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766820.7U CN204295604U (en) | 2014-12-08 | 2014-12-08 | A kind of error prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204295604U true CN204295604U (en) | 2015-04-29 |
Family
ID=53101182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420766820.7U Withdrawn - After Issue CN204295604U (en) | 2014-12-08 | 2014-12-08 | A kind of error prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204295604U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104440755A (en) * | 2014-12-08 | 2015-03-25 | 重庆市银钢一通科技有限公司 | Error-proofing device |
| CN109093565A (en) * | 2018-08-20 | 2018-12-28 | 上海恩坦华汽车门系统有限公司 | Mistake proofing over-center spring mechanism is installed |
-
2014
- 2014-12-08 CN CN201420766820.7U patent/CN204295604U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104440755A (en) * | 2014-12-08 | 2015-03-25 | 重庆市银钢一通科技有限公司 | Error-proofing device |
| CN104440755B (en) * | 2014-12-08 | 2016-03-23 | 重庆市银钢一通科技有限公司 | A kind of error prevention device |
| CN109093565A (en) * | 2018-08-20 | 2018-12-28 | 上海恩坦华汽车门系统有限公司 | Mistake proofing over-center spring mechanism is installed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20160323 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |