CN212685164U - Air door shaft hole matching structure - Google Patents
Air door shaft hole matching structure Download PDFInfo
- Publication number
- CN212685164U CN212685164U CN202021400178.2U CN202021400178U CN212685164U CN 212685164 U CN212685164 U CN 212685164U CN 202021400178 U CN202021400178 U CN 202021400178U CN 212685164 U CN212685164 U CN 212685164U
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- China
- Prior art keywords
- air door
- hole
- door shaft
- shaft hole
- boss
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005034 decoration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- Air-Flow Control Members (AREA)
Abstract
The utility model discloses an air door shaft hole cooperation structure, including air door shaft and air door hole, it is downthehole that the air door shaft inserts the air door, the inside circumferencial direction interval that follows of air door hole sets up a plurality of bosss, and the top surface of all bosss is the arc surface in the same radius and the centre of a circle, the top surface cooperation of air door shaft and boss. The utility model discloses a periphery contact change with air door shaft and air door hole is the contact of multistage arc surface, can improve and reduce the sliding friction power between the air door shaft hole, has solved the air door shaft that current air door shaft hole cooperation structure exists and air door hole frictional force big, the unable normal rotation's of air door shaft problem under the condition of expend with heat and contract with cold problem.
Description
Technical Field
The utility model relates to an automobile air conditioner, especially an air door shaft hole cooperation structure.
Background
The air door shaft hole of the existing automobile air conditioner is mainly of a round hole and cylinder matching structure, and the main structure and the principle are as follows: the air door shaft is inserted into the air door hole, and the air door shaft rotates in the air door hole by surface contact to adjust the air outlet mode of the air conditioner box.
The main problems of the existing air door shaft are as follows: the air door shaft is in surface contact with the air door hole, and the relative friction force is large; when ambient temperature changes, the product has expend with heat and contract with cold characteristic, and air door axle, air door hole shrink size are inconsistent, can lead to its relative cooperation size to change, have air door axle and air door hole cooperation tension, lead to air door running friction increase, air door motion inefficacy risk.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a novel air door shaft hole cooperation structure, the air door axle that can solve the existing structure existence with air door hole frictional force big, the unable normal rotatory problem of air door axle under the condition of expend with heat and contract with cold.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an air door shaft hole cooperation structure, includes air door axle and air door hole, and it is downthehole that the air door axle inserts the air door, the inside circumferencial direction interval of edge of air door hole sets up a plurality of bosss, and the top surface of all bosss is the arc surface of the same radius and the centre of a circle, the top surface cooperation of air door axle and boss.
Further, the number of the bosses is more than or equal to three.
Furthermore, the radius of the arc where the top surface of the boss is located is 0.2mm smaller than that of the air door hole.
Furthermore, the size of the boss in the direction of the central axis of the air door hole is 3-5 mm.
Furthermore, round chamfers are arranged on two sides of the boss.
Has the advantages that:
1. the utility model changes the contact between the air door shaft and the circumferential surface of the air door hole into the contact between a plurality of sections of arc surfaces, which can improve and reduce the sliding friction force between the air door shaft holes;
2. the product can avoid the problem that the air door shaft cannot normally rotate due to overlarge friction force of the product under the condition of expansion with heat and contraction with cold, and the reliability of the product is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the damper hole;
FIG. 3 is an enlarged partial view of the boss in the damper bore.
In the figure: 1-a damper shaft; 2-air door hole; 3-boss; 4-round chamfer.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses an air door shaft hole cooperation structure, including air door axle 1 and air door hole 2, air door axle 1 inserts the downthehole 2 of air door, and air door axle 1 is rotary motion in air door hole 3, adjusts air-conditioning box air-out mode. The air door shaft 1 is in sliding contact with the air door hole 2.
The utility model discloses mainly improve the sliding contact face of air door axle 1 and air door hole 2, change traditional periphery contact into multistage arc surface contact, as shown in fig. 2 and 3, 2 inside along the circumferencial direction interval of air door hole set up a plurality of boss 3, the top surface of all bosses 3 is the arc surface in the same radius and the centre of a circle, air door axle 1 with the top surface cooperation that has boss 2 makes air door axle 1 and multistage section arc surface form sliding contact like this. The number of the bosses 3 is required to be more than three, the number of the bosses 3 is three in the embodiment, and when the number of the bosses 3 is increased, the width of a single boss 2 can be properly reduced. And by combining the actual die machining precision, cost and requirements on air leakage at the air door shaft hole of the air conditioner box, the radius of the arc where the boss 3 is located is 0.2mm smaller than that of the air door hole 2. The size of the boss 3 in the direction of the central axis of the air door hole 2 is 3-5 mm. This size is favorable to the stability of air door operation, avoids appearing the swing phenomenon. In addition, in order to facilitate the assembly of the air door shaft 1 and the air door hole 2, round chamfers are processed on two sides of the boss 3.
Because the sliding contact surface of the air door shaft 1 and the air door hole 2 is changed into multi-section arc surface contact, the contact area can be greatly reduced, and the sliding friction force is reduced. Under the condition that the product expands with heat and contracts with cold, because the top surface that has a plurality of bosss 3 of contact fit with air door shaft 1, the periphery contact of contrast traditional scheme can eliminate because of whole face size change leads to the risk of cooperation tension. The problem that the air door shaft 1 cannot normally rotate due to over-tight matching can be avoided, and the reliability of the product is improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides an air door shaft hole cooperation structure, includes air door axle and air door hole, and it is downthehole that the air door axle inserts the air door, its characterized in that: the air door is characterized in that a plurality of bosses are arranged in the air door hole at intervals along the circumferential direction, the top surfaces of all the bosses are arc surfaces with the same radius and the same circle center, and the air door shaft is matched with the top surfaces of the bosses.
2. The damper shaft hole fitting structure according to claim 1, wherein: the number of the bosses is more than or equal to three.
3. A damper shaft hole fitting structure according to claim 1 or 2, wherein: and the radius of the arc where the top surface of the boss is located is 0.2mm smaller than that of the air door hole.
4. The damper shaft hole fitting structure according to claim 3, wherein: the size of the boss in the direction of the central axis of the air door hole is 3-5 mm.
5. The damper shaft hole fitting structure according to claim 4, wherein: and round chamfers are arranged on two sides of the boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021400178.2U CN212685164U (en) | 2020-07-16 | 2020-07-16 | Air door shaft hole matching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021400178.2U CN212685164U (en) | 2020-07-16 | 2020-07-16 | Air door shaft hole matching structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212685164U true CN212685164U (en) | 2021-03-12 |
Family
ID=74897569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021400178.2U Active CN212685164U (en) | 2020-07-16 | 2020-07-16 | Air door shaft hole matching structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212685164U (en) |
-
2020
- 2020-07-16 CN CN202021400178.2U patent/CN212685164U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Corning road Nanjing City, Jiangsu province 211100 Jiangning Science Park No. 389 Patentee after: Xiezhong International Thermal Management System (Jiangsu) Co.,Ltd. Country or region after: China Address before: No.389, Kening Road, Science Park, Jiangning District, Nanjing City, Jiangsu Province, 211100 Patentee before: NANJING XIEZHONG AUTO-AIRCONDITIONER (COMPANY) Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |