CN212529258U - Abnormal sound preventing structure of double-color injection molding air door - Google Patents
Abnormal sound preventing structure of double-color injection molding air door Download PDFInfo
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- CN212529258U CN212529258U CN202021457949.1U CN202021457949U CN212529258U CN 212529258 U CN212529258 U CN 212529258U CN 202021457949 U CN202021457949 U CN 202021457949U CN 212529258 U CN212529258 U CN 212529258U
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Abstract
The utility model relates to a double-shot molding air door abnormal sound prevention structure, which comprises a rotating shaft, wherein an air deflector is convexly arranged on the rotating shaft, the air deflector is coplanar with the rotating shaft, and a wind shielding edge extending along the edge of one side surface of the air deflector is convexly arranged on one side surface of the air deflector so as to change the direction of air flow flowing to the rotating shaft along the side surface edge of the air deflector; the wind deflector is characterized in that the rotating shaft is provided with a plurality of weight reducing grooves, and the opening ends of all the weight reducing grooves face to the other side of the wind deflector so that the wind deflector can keep out wind along the surface part of the rotating shaft on the side where the wind deflector is arranged to be a complete surface. The utility model discloses a when the air door is opened and is used, keep out the wind in the wind channel along the orientation, do not follow the air current that opens the passageway and pass through before aviation baffle border and the casing, can not paste the inboard surface flow of aviation baffle always to the revolving axle, but the inboard surface of keeping away from the aviation baffle is raised when keeping out the wind along the time, has changed the trend of wind, and the correspondence can reduce resonance to reduce the abnormal sound noise, the revolving axle surface of this side is complete surface, also is favorable to falling and makes an uproar.
Description
Technical Field
The utility model belongs to the technical field of ventilation equipment in the general vehicle, concretely relates to two-color air door of moulding plastics prevents abnormal sound structure.
Background
The automobile air conditioner shell is internally provided with a plurality of air ducts, and air doors are correspondingly used on the air ducts for sealing or guiding air flow, and the prior art such as CN 208216460U, CN 211000840U, CN 210026960U can be referred. The structure type of the air door is that a foam edge air door and a double-color injection molding air door are common, the two air doors are the same in basic structure, two sides of a rotating shaft in the center are provided with supporting parts in a plane protrusion mode, the foam edge air door is connected with an upper foam layer in the edges of the two supporting parts in a pasting mode so as to be in compression contact with a shell, the double-color injection molding air door combines two different materials together through an injection molding process, referring to the attached drawings 1 and 2, the supporting part 103 is made of hard glue, the outer edge 104 is made of soft glue, the double-color injection molding air door works by contacting the soft glue part with the shell, the rotating shaft 1 is provided with a plurality of weight reduction grooves 11 at intervals in a crossed mode on two sides, and the. The foam layer of foam border air door is because of technical requirement is low and excellent in use effect (inhale the sound), obtains wide application, but its manufacturing process needs to glue all the time and bonds, and along with the environmental protection requirement is higher and higher, it has obvious weak point on projects such as VOC detection, and the air door begins more uses the double-colored air door of moulding plastics.
The double-color injection molding air door mainly adopts the soft rubber sealing edge, and the adoption of the soft rubber part also needs to overcome a plurality of new problems, such as the problem of the deformable quantity corresponding to the hardness degree, the problem of the poor sound absorption effect and the easy abnormal sound, and the like. The problems of abnormal sound and squeal are also mentioned and partially solved in CN 208216460U, which mainly aims at and solves the problems of squeal and wind leakage in a sealed state. However, the problem of abnormal noise still exists when the ordinary double-color injection molding air door is in a ventilation state, and particularly in a temperature regulation (usually, heating) foot blowing mode on the current automobile, the defrosting air door of the defrosting air channel is required to be slightly opened, about 20% of air can pass through, and the windshield is blown to avoid fogging of the windshield, so that the driving safety and comfort are ensured. In this case, the slightly opened defrosting dampers pass through relatively faster wind speed, so that the wind speed is strong, resonance is easily caused, sharp sound is generated, and abnormal noise is more obvious and needs to be further improved and optimized.
Disclosure of Invention
The above-mentioned not enough to prior art, the to-be-solved technical problem of the utility model is to provide a two-color air door of moulding plastics prevents abnormal sound structure, avoids ordinary two-color air door of moulding plastics to have the problem of more obvious abnormal sound noise when ventilation status, especially little aperture ventilation status, gains the effect of abnormal sound when preventing to use better.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the double-color injection molding air door abnormal sound prevention structure comprises a rotating shaft, wherein an air deflector is arranged on the rotating shaft in a protruding mode, the air deflector is coplanar with the rotating shaft, and a wind shielding edge extending along the edge of one side surface of the air deflector is arranged on one side surface of the air deflector in a protruding mode so as to change the direction of air flow flowing to the direction of the rotating shaft along the edge of the side surface of the air deflector; the wind deflector is characterized in that the rotating shaft is provided with a plurality of weight reducing grooves, and the opening ends of all the weight reducing grooves face to the other side of the wind deflector so that the wind deflector can keep out wind along the surface part of the rotating shaft on the side where the wind deflector is arranged to be a complete surface.
Further perfecting the technical scheme, all the weight reducing grooves are arranged at intervals along the axial direction of the rotating shaft, and the groove depth direction of the weight reducing grooves is perpendicular to the air deflector.
Furthermore, the air deflector is composed of a hard glue supporting section and a soft glue sealing edge, the hard glue supporting section is rectangular and is connected with the rotating shaft through a long edge, and the soft glue sealing edge is continuously arranged on the other long edge and two short edges of the hard glue supporting section; the wind shielding edge is parallel to the rotating shaft, and the length of the wind shielding edge is not less than that of the hard rubber supporting section.
Further, the wind shielding edge is arranged on the soft glue sealing edge.
Furthermore, a plurality of oblique stabilizing rib plates are arranged between one side of the wind shielding edge facing the rotating shaft and the soft rubber sealing edge, the oblique stabilizing rib plates extend towards the rotating shaft, and all the oblique stabilizing rib plates are arranged at intervals along the axial direction of the rotating shaft.
Furthermore, the outer edge of the soft rubber sealing edge, which is parallel to the rotating shaft, is in a sawtooth shape.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a double-colored air door of moulding plastics prevents abnormal sound structure, protruding setting up the edge of keeping out the wind on the aviation baffle, when the air door is opened and is used, the air current passes through from the opening passageway before aviation baffle border and the casing, the air current that fails to pass through from opening the passageway can flow to the revolving axle along the inboard surface border of aviation baffle, if the air current flows to the revolving axle along the inboard surface of aviation baffle always, drive the resonance easily and send the abnormal sound noise, if the revolving axle surface part of this side still seted up subtract heavy groove then the abnormal sound noise is more;
and the utility model discloses set up the edge back of keeping out the wind, can change the air current orientation along this side surface border flow direction of aviation baffle revolving axle direction, the air current can not paste the inboard surface flow direction revolving axle of aviation baffle always, but the inboard surface of aviation baffle has been kept away from in the time of keeping out the wind along by raising up, the trend of wind has been changed, the correspondence can reduce resonance, thereby reduce the abnormal sound noise, and simultaneously, the revolving axle surface part of this side is complete surface, do not have the trompil or offer and subtract the heavy groove, also be favorable to reducing the abnormal sound noise.
Drawings
FIG. 1 is a schematic structural diagram of a conventional two-color injection molding damper mentioned in the background art;
FIG. 2 is a schematic view of another side view of the dual injection molded damper of FIG. 1;
FIG. 3 is a schematic structural view (top view) of the abnormal noise prevention structure of the dual-color injection molding damper according to the embodiment;
FIG. 4 is a schematic structural diagram (bottom view angle) of the abnormal sound prevention structure of the two-color injection molding damper according to the embodiment;
FIG. 5 is another side view of the dual injection molded vent door anti-rattle structure in accordance with an exemplary embodiment;
FIG. 6 is a diagram illustrating the effect of the dual-injection molding damper structure on abnormal sound;
FIG. 7 is an enlarged partial view of the damper portion of FIG. 6 (illustrating primarily the direction of airflow);
FIG. 8 is a schematic view of the air flow around a conventional two-shot air door, based on FIG. 7;
the wind-proof structure comprises a rotating shaft 1, a weight-reducing groove 11, a wind deflector 2, a hard rubber supporting section 21, a soft rubber sealing edge 22, a wind-proof edge 221, an inclined stabilizing rib plate 222, a sawtooth shape 223, a shell 100, an air duct 101, a supporting part 103 and an outer edge 104.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 3 to 5, the abnormal sound prevention structure for a two-color injection-molded damper of the embodiment includes a rotating shaft 1, wherein an air deflector 2 is protruded on the rotating shaft 1, the air deflector 2 is coplanar with the rotating shaft 1, and a wind shielding edge 221 extending along an edge of one side surface of the air deflector 2 is protruded on one side surface of the air deflector 2 to change the direction of an air flow flowing to the rotating shaft 1 along the side surface edge of the air deflector 2; the rotating shaft 1 is provided with a plurality of weight reducing grooves 11, and the opening ends of all the weight reducing grooves 11 face to the other side of the air deflector 2, so that the surface part of the rotating shaft 1 on the side where the wind shielding edge 221 on the air deflector 2 is arranged is a complete surface.
According to the abnormal noise prevention structure of the double-color injection molding air door, the wind shielding edge 221 is arranged on the wind deflector 2 in a protruding mode, when the structure is used, as shown in fig. 6 and 7, the wind shielding edge 221 on the wind deflector 2 faces the inner end of the air duct 101, namely the wind comes to the side, when the air door is opened, airflow passes through an opening channel between the edge of the wind deflector 2 and the front side of the shell 100, and airflow which cannot pass through the opening channel flows to the rotating shaft 1 along the edge of the inner side surface of the wind deflector 2, and ordinary double-color air doors without the wind shielding edge can be seen in fig. 8, and airflow always flows to the rotating shaft 1 along the inner side surface of the wind deflector 2, so that resonance is easily driven to generate abnormal noise, and if the surface part of the rotating shaft 1 on the side is further provided with the weight reduction groove 11; the utility model discloses set up and kept out the wind along 221 the back, please continue to refer to FIG. 6, fig. 7, can change along the air current orientation of this side surface border flow direction revolving axle 1 direction of aviation baffle 2, the air current can not paste the inboard surface flow direction revolving axle 1 of aviation baffle 2 always, but the inboard surface of aviation baffle 2 is kept away from in the time of keeping out the wind along 221 by being raised, the trend of wind has been changed, the correspondence can reduce resonance, thereby reduce the abnormal sound noise, and simultaneously, revolving axle 1 surface part of this side is complete surface, do not have the trompil or set up and subtract heavy groove 11, also be favorable to reducing the abnormal sound noise.
With continued reference to fig. 3-5, all the weight-reducing slots 11 are spaced apart in the axial direction of the rotating shaft 1, and the depth direction of the weight-reducing slots 11 is perpendicular to the air deflector 2.
Like this, be convenient for subtract heavy arranging, do benefit to and reduce consumptive material, reduce cost, subtract heavy groove 11 and follow the homonymy and loose core the shaping, it is convenient to make.
The air deflector 2 is composed of a hard rubber supporting section 21 and a soft rubber sealing edge 22, the hard rubber supporting section 21 is rectangular and is connected with the rotating shaft 1 through a long edge, the soft rubber sealing edge 22 is continuously arranged on the other long edge and two short edges of the hard rubber supporting section 21, the hard rubber supporting section 21 and the rotating shaft 1 are integrally formed by injection molding during manufacturing, the wind shielding edge 221 is parallel to the axis of the rotating shaft 1, and the length of the wind shielding edge 221 is not less than that of the hard rubber supporting section 21.
Therefore, the arrangement of unnecessary wind shielding edges is reduced by combining the form of opening a channel between the air door and the shell and passing air flow, the wind shielding edges are not required to be arranged in the directions of two short sides of the hard rubber supporting section 21, and the cost is reduced. In implementation, the wind shielding edge 221 may be disposed on the hard glue supporting section 21, or may be disposed on the soft glue sealing edge 22, both of which may play a role, and is preferably disposed on the soft glue sealing edge 22; in this embodiment, the wind shielding edge 221 is also integrally injection-molded on the soft rubber sealing edge 22, so that the stroke length of the airflow flowing against the inner side surface of the wind deflector 2 can be reduced to a greater extent, and the resonance abnormal sound can be better prevented.
When the wind shielding edge 221 is integrally injection-molded on the soft rubber sealing edge 22, the wind shielding edge 221 is made of a soft rubber material, preferably, a plurality of oblique stabilizing rib plates 222 are arranged between one side of the wind shielding edge 221 facing the rotating shaft 1 and the soft rubber sealing edge 22, the oblique stabilizing rib plates 222 extend towards the rotating shaft 1 and are triangular, and all the oblique stabilizing rib plates 222 are arranged at intervals along the axial direction of the rotating shaft 1.
Therefore, the use stability of the wind shielding edge 221 is ensured, and the use effect is further ensured.
Wherein, the side of the soft rubber sealing edge 22 far away from the rotating shaft 1, namely the outer edge of the soft rubber sealing edge 22 parallel to the rotating shaft 1 is in a zigzag shape 223, and the zigzag shape 223 also extends along the axial direction of the rotating shaft 1.
Therefore, when the flexible glue sealing edge is closed, the flexible glue sealing edge 22 is in initial contact with the shell, deformation is guided, and fitting is better achieved.
In this embodiment, as with a common two-color damper, the other side of the rotating shaft 1 having a planar structure is also provided with the air deflector 2 composed of the hard rubber supporting section 21 and the soft rubber sealing edge 22, but the air deflector 2 on the other side (the upper portion of the rotating shaft 1 in fig. 4) is not provided with the wind shielding edge 221, and the wind shielding edge 221 is designed to be adapted according to needs in combination with the actual wind direction depending on the specific position of the rotating connection of the damper in the casing 100 and the wind channel 101.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (6)
1. The abnormal sound structure is prevented to double-colored air door of moulding plastics, including the revolving axle, the arch is established the aviation baffle on the revolving axle, aviation baffle and revolving axle coplane, its characterized in that: one side surface of the air deflector is convexly provided with a wind shielding edge extending along the edge of the air deflector so as to change the direction of the airflow flowing to the direction of the rotating shaft along the side surface edge of the air deflector; the wind deflector is characterized in that the rotating shaft is provided with a plurality of weight reducing grooves, and the opening ends of all the weight reducing grooves face to the other side of the wind deflector so that the wind deflector can keep out wind along the surface part of the rotating shaft on the side where the wind deflector is arranged to be a complete surface.
2. The dual-color injection molding air door abnormal sound prevention structure according to claim 1, characterized in that: all the weight reducing grooves are arranged at intervals along the axial direction of the rotating shaft, and the groove depth direction of the weight reducing grooves is perpendicular to the air deflector.
3. The dual-color injection molding air door abnormal sound prevention structure according to claim 1, characterized in that: the air deflector is composed of a hard rubber supporting section and a soft rubber sealing edge, the hard rubber supporting section is rectangular and is connected with the rotating shaft through a long edge, and the soft rubber sealing edge is continuously arranged on the other long edge and two short edges of the hard rubber supporting section;
the wind shielding edge is parallel to the rotating shaft, and the length of the wind shielding edge is not less than that of the hard rubber supporting section.
4. The dual-color injection molding air door abnormal sound prevention structure according to claim 3, characterized in that: the wind shielding edge is arranged on the soft rubber sealing edge.
5. The dual-color injection molding air door abnormal sound prevention structure according to claim 4, wherein: and a plurality of oblique stabilizing rib plates are arranged between one side of the wind shielding edge facing the rotating shaft and the soft rubber sealing edge, extend towards the rotating shaft, and are arranged at intervals along the axial direction of the rotating shaft.
6. The abnormal sound prevention structure of the double-shot molding air door according to any one of claims 3 to 5, characterized in that: the outer edge of the soft rubber sealing edge, which is parallel to the rotating shaft, is in a sawtooth shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021457949.1U CN212529258U (en) | 2020-07-22 | 2020-07-22 | Abnormal sound preventing structure of double-color injection molding air door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021457949.1U CN212529258U (en) | 2020-07-22 | 2020-07-22 | Abnormal sound preventing structure of double-color injection molding air door |
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| Publication Number | Publication Date |
|---|---|
| CN212529258U true CN212529258U (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021457949.1U Active CN212529258U (en) | 2020-07-22 | 2020-07-22 | Abnormal sound preventing structure of double-color injection molding air door |
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| Country | Link |
|---|---|
| CN (1) | CN212529258U (en) |
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- 2020-07-22 CN CN202021457949.1U patent/CN212529258U/en active Active
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