CN208264235U - A kind of double diaphragm vacuum boosters of breather pipe structure - Google Patents

Abstract

The utility model discloses a kind of double diaphragm vacuum boosters of breather pipe structure.Side between primary diaphragm and secondary diaphragm is equipped with breather pipe structure, and breather pipe structure is connected to two atmosphere chambers outside primary diaphragm and secondary diaphragm；Breather pipe structure is tightly connected with middle case by middle case sealing ring, is interference fitted between breather pipe structure and middle case sealing ring.The breather pipe structure of the utility model realizes that two atmosphere chambers communicate requirement, simple and general, it solves the problems, such as that existing ventilation device is excessively complicated, double diaphragm vacuum booster shell structures can be simplified, simplify valve body structure, mitigate weight, improve the craftsmanship of booster, reduces failure rate.

Description

A kind of double diaphragm vacuum boosters of breather pipe structure

Technical field

The utility model belongs to vacuum braking force aid system field, is applied to turbocharging, engine automobile, electric car And the vacuum braking force aid system of hybrid vehicle vacuum booster.

Background technique

Vacuum booster is the critical component in brake system of car, its main function is to amplify pedal force, effect On master cylinder piston, it is made to travel forward, and then hydraulic in the generation of master cylinder pressure chamber, then passes through system of the master cylinder outlet mouth to vehicle Dynamic system conveying is hydraulic, to realize the brake function of automobile.

In existing double diaphragm vacuum boosters, they the shortcomings that be: ventilated double diaphragm strengtheners using periphery, front and rear casing Structure is complicated for body, and the required precision of diaphragm is high, and assembly process process is bad.Using double diaphragm strengtheners of ventilating in valve body, valve body knot Structure is complicated, and the big weight of volume is big, does not meet light-weighted requirement.It may not apply to penetration type double-diaphragm booster, part is general Property is poor.

Utility model content

Just there is provided a kind of double diaphragm vacuum boosters of breather pipe structure, structures for problem to be solved in the utility model It is simple and general, solve the problems, such as that existing double diaphragm vacuum booster structures are excessively complicated, craftsmanship is bad, and high failure rate is passed through It wears, the uncurrent feature of the double diaphragm strengthener parts of non-through.

In order to solve the above technical problems, the utility model adopts the following technical solution:

The utility model includes middle case and the primary diaphragm and secondary diaphragm for being located at middle case two sides, first Side between diaphragm and secondary diaphragm is equipped with breather pipe structure, and breather pipe structure is connected to two outside primary diaphragm and secondary diaphragm A atmosphere chamber；The breather pipe structure is tightly connected with middle case by middle case sealing ring, breather pipe structure and middle case It is interference fitted between sealing ring.

The breather pipe structure be both ends open ventilation pipe, ventilation pipe both ends be respectively engaged with primary diaphragm and The through-hole end face being provided on secondary diaphragm, ventilation pipe both ends respectively with outside primary diaphragm the first atmosphere chamber and secondary diaphragm outside The second atmosphere chamber connection so that the first atmosphere chamber is connected to the second atmosphere chamber.

The breather pipe structure both ends interference seal between primary diaphragm and the through-hole of secondary diaphragm respectively.

The primary diaphragm and secondary diaphragm uses flexible membrane.

The breather pipe structure uses plastics or metal.

The breather pipe structure of the utility model must phase with the second atmosphere chamber according to the first atmosphere chamber of double diaphragm strengtheners Logical principle realizes that the first atmosphere chamber is connected to requirement with the second atmosphere chamber under the premise of meeting booster and being easily assembled.

The beneficial effects of the utility model are as follows:

The breather pipe structure of the utility model realizes the work for reducing diaphragm, the complexity of valve body and raising front and rear housings Skill reduces set assembling technology difficulty, reduces assembly failure rate.

Under the premise of meeting the first atmosphere chamber of booster with the second atmosphere chamber and being connected to requirement, existing ventilation device is solved excessively Complicated problem simplifies valve body structure, reduces failure rate, realizes lightweight, improves part universality.

Detailed description of the invention

Fig. 1 is the utility model booster sectional structure chart.

Fig. 2 is the axial view of the utility model booster.

In figure: primary diaphragm 1, secondary diaphragm 2, breather pipe structure 3, the first atmosphere chamber 4, the second atmosphere chamber 5, middle case 6, Middle case sealing ring 7.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and detailed description:

As depicted in figs. 1 and 2, the utility model includes middle case 6 and the primary diaphragm for being located at 6 two sides of middle case 1 and secondary diaphragm 2, the side between primary diaphragm 1 and secondary diaphragm 2 is equipped with breather pipe structure 3, and breather pipe structure 3 is connected to Two atmosphere chambers outside primary diaphragm 1 and secondary diaphragm 2, breather pipe structure 3 can reduce the complexity and raising of diaphragm, valve body The craftsmanship of front and rear housings reduces the technology difficulty of assembly.

If Fig. 2 shows, breather pipe structure 3 and middle case 6 are tightly connected by middle case sealing ring 7, and breather pipe structure 3 is in Between be interference fitted between shell sealing ring 7.Breather pipe structure 3 is according to the first atmosphere chamber 4 and the second atmosphere chamber 5 of double diaphragm strengtheners Principle must be communicated, under the premise of meeting booster and being easily assembled, realizes that the first atmosphere chamber 4 is connected to the second atmosphere chamber 5 and wants It asks.

As shown in Figure 1, breather pipe structure 3 is the ventilation pipe of both ends open, ventilation pipe both ends are respectively engaged with first The through-hole end face being provided on diaphragm 1 and secondary diaphragm 2, the ventilation pipe both ends through-hole with primary diaphragm 1 and secondary diaphragm 2 respectively Between interference seal, ventilation pipe both ends respectively with the first atmosphere chamber 4 outside primary diaphragm 1 and second largest outside secondary diaphragm 2 Air cavity 5 is connected to, so that the first atmosphere chamber 4 is connected to the second atmosphere chamber 5.

The utility model it is specific installation with use process is as follows:

The snorkel of the utility model is sleeved between double diaphragm strengthener primary diaphragms and secondary diaphragm, primary diaphragm and Secondary diaphragm and valve body after the assembly is completed, can be easily inserted completion assembly.

After the assembly is completed, snorkel and primary diaphragm and secondary diaphragm interference, snorkel and the interference of middle case sealing ring, can It easily realizes the seal request of assembly, while meeting the requirement that diaphragm moves forward and backward in booster, solve existing double diaphragms The problem of booster ventilation device is excessively complicated, high failure rate, realizes that double diaphragm strengtheners are quickly applied.

Claims (5)

1. a kind of double diaphragm vacuum boosters of breather pipe structure, including middle case and it is located at the first film of middle case two sides Piece (1) and secondary diaphragm (2), it is characterised in that: the side between primary diaphragm (1) and secondary diaphragm (2) is equipped with snorkel Structure (3), breather pipe structure (3) are connected to two atmosphere chambers of primary diaphragm (1) and secondary diaphragm (2) outside；The snorkel Structure (3) and middle case (6) are tightly connected by middle case sealing ring (7), breather pipe structure (3) and middle case sealing ring (7) Between be interference fitted.

2. a kind of double diaphragm vacuum boosters of breather pipe structure according to claim 1, it is characterised in that: the ventilation Pipe structure (3) is the ventilation pipe of both ends open, and ventilation pipe both ends are respectively engaged with primary diaphragm (1) and secondary diaphragm (2) On the through-hole end face that is provided with, ventilation pipe both ends respectively with outer the first atmosphere chamber (4) of primary diaphragm (1) and secondary diaphragm (2) Outer the second atmosphere chamber (5) connection, so that the first atmosphere chamber (4) is connected to the second atmosphere chamber (5).

3. a kind of double diaphragm vacuum boosters of breather pipe structure according to claim 1, it is characterised in that: the snorkel Structure (3) both ends interference seal between primary diaphragm (1) and the through-hole of secondary diaphragm (2) respectively.

4. a kind of double diaphragm vacuum boosters of breather pipe structure according to claim 1, it is characterised in that:

The primary diaphragm (1) and secondary diaphragm (2) uses flexible membrane.

5. a kind of double diaphragm vacuum boosters of breather pipe structure according to claim 1, it is characterised in that:

The breather pipe structure (3) uses plastics or metal.