CN201448806U

CN201448806U - Ventilation plug

Info

Publication number: CN201448806U
Application number: CN200920047357XU
Authority: CN
Inventors: 昌建忠
Original assignee: PAN-ASIAN AUTOMOTIVE GARNISHRY (CHANGZHOU) Co Ltd
Current assignee: PAN-ASIAN AUTOMOTIVE GARNISHRY (CHANGZHOU) Co Ltd
Priority date: 2009-07-15
Filing date: 2009-07-15
Publication date: 2010-05-05
Anticipated expiration: 2019-07-15

Abstract

The utility model discloses a ventilation plug, which comprises a plug body, a plug core and a filter membrane. The ventilation plug has a tubular structure, wherein one end of the plug body is provided with an opening, a support component is arranged on the bottom of the inner hole of the plug body, the upper plane of the support component and the bottom wall of the plug body maintain a gap, the center of the plug core is provided with a ventilation channel, the plug core is provided with a shouldered section, the shouldered section is provided with at least one ventilation groove in the axial direction thereof and is matched with the inner hole of the plug body, one end of the plug core is butted with the upper plane of the support component on the bottom of the inner hole of the plug body, the other end of the plug core is higher than the end face of the opening end of the plug body and is matched with the exhaust port of a device to be exhausted, the filter membrane is pasted at the end of the plug core adjacent to the bottom wall of the plug body, and the ventilation plug is mainly characterized in that the filter membrane completely covers the ventilation channel of the plug core. The utility model has the advantages of reasonable structure, convenient production and installation and good ventilation effect.

Description

Ventilative bolt

Technical field

The utility model relates to a kind of ventilative bolt.Belong to the means for ventilation technology.

Background technology

The ventilative bolt that the utility model is related, be to be used to discharge a kind of structural member that is present in gas that closed inner chamber produces, for example be used to discharge the gas permeable member that automobile headlamp covers on the moisture gas that produces in service, because moisture gas dewfall on lampshade, and effectively improve the lighting effect of headlight in order to eliminate.

Existing this class means for ventilation is made up of body, tube core and filter membrane, but is studied carefully its version, seems very unreasonable, the structure of its tube core especially, and more complicated has caused trouble to its production especially, has strengthened production cost thus; And because its gas-permeable channels layout is unreasonable, exhaust is very not unobstructed, and directly influences its air permeable effect.

Summary of the invention

It is relatively reasonable that the utility model aims to provide a kind of structure, and air permeable effect is better relatively, produces ventilative eaily bolt, to overcome the deficiency of prior art.

The utility model realizes that the technical scheme of its purpose is:

A kind of ventilative bolt comprises key, bolt core and filter membrane, and its innovative point is,

A, described key are the uncovered blind pipe bodies of an end, in the bottom of the blind hole of key supporter are arranged; The last plane and the key diapire of supporter maintain spacing;

B, described bolt core have airway in the central; The bolt core has the convex shoulder section; Described convex shoulder section is axially arranged with at least 1 air discharge duct along it, and the blind hole of described convex shoulder section and key is equipped; The last plane of the supporter of one end of described bolt core and the blind hole of key bottom connects, and the other end of bolt core exceeds key opening end end face, and can be equipped mutually with the exhaust outlet of the device that needs exhaust;

C, described filter membrane stick on the bolt core and are positioned at an end adjoining with the key diapire, and cover the airway of bolt core comprehensively.

Can understand by above given technical scheme, be present in the gas of described closed inner chamber,, enter gap between key diapire and the bolt in-core end face, then by the air discharge duct emptying of bolt core by filter membrane by the airway of bolt core.Because gas emptying passage one road is smooth and easy, and the mould of its bolt core and production technology are all relatively simple, thereby has realized the purpose of this utility model.

The utility model advocates that also the air discharge duct of described bolt core has 6, and evenly arranges along convex shoulder section peripheral direction.Its purpose obviously is effectively to strengthen the sectional area of exhaust passage, and makes the total sectional area of its exhaust passage be equal to or greater than the sectional area of its airway, makes internal memory gas be more prone to emptying.And described filter membrane can be the filter membrane with nonwoven or woven cloth layer, and its purpose is to improve the service life of filter membrane.And described filter membrane preferably adopts a kind of four polyvinyl fluoride microporous membranes of one-way ventilating.Its air permeable effect will be perfect more like this.

The utility model advocates that also described key is the hexagon cylinder, and its blind hole is the hexagon blind hole; The convex shoulder section of described bolt core is the hexagon cylinder, and equipped with the hexagonal blind hole of key.Its purpose mainly is convenient of the present utility modelly install at machine.

The utility model advocates that also the diapire of described support member and key is mutually one.But be not limited thereto.In fact, also support member can be made apportion spare, and it is arranged between key diapire and the bolt in-core end face.

Characteristics such as after technique scheme was implemented, what the utility model had was rational in infrastructure, produced and easy for installation, and air permeable effect is good are conspicuous.

Description of drawings

Fig. 1 is the structural representation of a kind of specific embodiment of the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the front view as bolt core 2 shown in Figure 1;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is the front view as key shown in Figure 11;

Fig. 6 is the C-C cutaway view of Fig. 5.

The specific embodiment

Below contrast accompanying drawing, by the description of the specific embodiment, the utility model is described in further detail.

The specific embodiment is shown in accompanying drawing 1～5.

A kind of ventilative bolt comprises plastics key 1, bolt core 2 and filter membrane 3, and the described key 1 uncovered blind pipe body that is an end, in the bottom of the blind hole 1-1 of key 1 supporter 4 is arranged; The last plane 4-1 of supporter 4 and key 1 diapire 1-2 maintain spacing; Described bolt core 2 is an elastomeric material rubber and plastic spare, and airway 2-1 is arranged in the central; Bolt core 2 has convex shoulder section 2-2; Described convex shoulder section 2-2 is axially arranged with at least 1 air discharge duct 2-3 along it, and the blind hole 1-1 of described convex shoulder section 2-2 and key 1 is equipped; The last plane 4-1 of the supporter 4 of one end of described bolt core 2 and the blind hole 1-1 of key 1 bottom connects, and the other end of bolt core 2 exceeds key 1 opening end end face, and can be equipped mutually with the exhaust outlet of the device that needs exhaust; Described filter membrane 3 sticks on bolt core 3 and is positioned at and the adjoining end of key 1 diapire, and covers the airway 2-1 of bolt core 1 comprehensively.And the air discharge duct 2-3 of described bolt core 2 has 6, and evenly arranges along convex shoulder section 2-2 peripheral direction.Described key 1 is the hexagon cylinder, and its blind hole 1-1 is the hexagon blind hole; The convex shoulder section 2-2 of described bolt core 2 is hexagon cylinders, and equipped with key 1 hexagon blind hole 1-1.Described support member 4 is mutually one with the diapire 1-2 of key 1.

The effect that the utility model first sample uses on car headlamp is good.

Claims

1. a ventilative bolt comprises key (1), bolt core (2) and filter membrane (3), it is characterized in that,

A, described key (1) are the uncovered blind pipe bodies of an end, in the bottom of the blind hole (1-1) of key (1) supporter (4) are arranged; The last plane (4-1) of supporter (4) maintains spacing with key (1) diapire (1-2);

B, described bolt core (2) have airway (2-1) in the central; Bolt core (2) has convex shoulder section (2-2); Described convex shoulder section (2-2) is axially arranged with at least 1 air discharge duct (2-3) along it, and described convex shoulder section (2-2) is equipped with the blind hole (1-1) of key (1); The last plane (4-1) of the supporter (4) of blind hole (1-1) bottom of one end of described bolt core (2) and key (1) connects, and the other end of bolt core (2) exceeds key (1) opening end end face, and can be equipped mutually with the exhaust outlet of the device that needs exhaust;

C, described filter membrane (3) stick on bolt core (3) and are positioned at and the adjoining end of key (1) diapire, and cover the airway (2-1) of bolt core (1) comprehensively.

2. ventilative bolt according to claim 1 is characterized in that, the air discharge duct (2-3) of described bolt core (2) has 6, and evenly arranges along convex shoulder section (2-2) peripheral direction.

3. ventilative bolt according to claim 1 and 2 is characterized in that, described key (1) is the hexagon cylinder, and its blind hole (1-1) is the hexagon blind hole; The convex shoulder section (2-2) of described bolt core (2) is the hexagon cylinder, and equipped with the hexagon blind hole (1-1) of key (1).

4. ventilative bolt according to claim 1 is characterized in that, described support member (4) is mutually one with the diapire (1-2) of key (1).