CN201277397Y

CN201277397Y - Joint sealing member

Info

Publication number: CN201277397Y
Application number: CNU2008200393994U
Authority: CN
Inventors: 冯勇兵; 刘凯
Original assignee: Ecovacs Robotics Suzhou Co Ltd
Current assignee: Ecovacs Robotics Suzhou Co Ltd
Priority date: 2008-09-04
Filing date: 2008-09-04
Publication date: 2009-07-22
Anticipated expiration: 2018-09-04

Abstract

The utility model relates to structure improvement of an interface sealing element, which belongs to the sealing technical field. The sealing element comprises a plug socket end and an applying end, wherein the plug socket end and the applying end are connected through a corrugated pipe. Since the materials of the sealing element have certain elasticity, a corrugated structure has good telescopic rebound resilience, thereby one of interfaces of a connected passage or pipeline is inserted into the plug socket end of the sealing member of the utility model, and reliable applying and sealing can be guaranteed by the aid of the resilience effect of the corrugated structure only through supporting the other interface on the applying end. The assembly is very convenient clearly.

Description

Sealing joint spare

Technical field

The utility model relates to a kind of Sealing, and especially a kind of architecture advances of sealing joint spare belongs to technical field of sealing technology.

Background technique

Line seal is all very important for many facilities.For example, during vacuum cleaner work, suck the air stream that contains dust, and the pollutant of dust and so on is trapped in the dust collect plant, discharge clean air, thereby reach the purpose of cleaning.Therefore we can say that the working procedure of vacuum cleaner is exactly the process of gas communication,, will directly influence the working efficiency of vacuum cleaner and suck power, and can increase noise if the sealing of airflow pipeline is bad.

Understand according to the claimant, above-mentioned pipeline jointing routine be sealed with following dual mode:

1, directly utilizes interference fit.As shown in Figure 1, Fig. 1 (a) is for before assembling, and Fig. 1 (b) is for after assembling.Pack on the part A Sealing C of elastic material behind the part B that packs into, guarantees sealing by the magnitude of interference S between part B and the Sealing.Because this scheme realizes sealing by magnitude of interference fully, so part B is seated and need overcomes magnitude of interference and pay bigger assembly force, and feel is bad.

2, adopt turnup structure.As shown in Figure 2, Fig. 2 (a) is for before assembling, and Fig. 2 (b) is for after assembling.Utilize negative pressure that vacuum cleaner self produces with the flange of Sealing C automatically and part B be adjacent to.When making Sealing, flange must be done the thin effect that can reach sealing.But thin flange is wrinkling easily, and is easily gone by the negative pressure inspiration, causes seal failure, and seals bad local air high speed flow and cross also and can produce abnormal sound.

The model utility content

The purpose of this utility model is, at the problem that above prior art exists, proposes reliable, the easy to assembly sealing joint spare of sealing.

In order to reach above purpose, sealing joint spare of the present utility model comprises the socket end and the end of fitting, and described socket end is connected by bellows between holding with fitting.

Above-mentioned bellows includes but not limited to various concrete ripple structions such as sawtooth wave, square wave, trapezoidal wave, circular arc ripple.Adjacent corrugations can be independent ring structure, also can be connected by spiral to constitute.

Because the material of Sealing itself has certain elasticity, and ripple struction has good flexible rebound elasticity, therefore after one of interface of connected passage or pipeline inserts the socket end of the utility model Sealing, as long as another interface is resisted against the end of fitting, can guarantee to fit reliably sealing by the rebound effect of ripple struction.Its assembling is obviously very convenient.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 (a) and Fig. 1 (b) are respectively the forward and backward structural representation of existing interference fit seal part assembling.

Fig. 2 (a) and Fig. 2 (b) are respectively the forward and backward structural representation of existing turnup structure Sealing assembling.

Fig. 3 (a) and Fig. 3 (b) are respectively the structural representation of an embodiment's of the utility model assembling front and back.

Embodiment

Embodiment one

Present embodiment for a kind of sealing joint spare C that is applied on the vacuum cleaner, its structure is shown in Fig. 3 (a) and Fig. 3 (b), an end that is positioned at interface A is the socket end, the internal diameter of this socket becomes drive fit with the external diameter of interface A, the end of contiguous interface B is the end of fitting, constitute by the end face D that can thicken and widen design as required, thereby avoid bad phenomenon such as wrinkling, prevent abnormal sound.Fuse by flexuose ripple pipe between socket end and the applying end.

Because this makes the sealing part as having flexible resilient material, the resilience of can stretching freely of bellows linkage structure, therefore assembling back Sealing can be compressed as required, and consequent spring-back force F makes Sealing fit with part A, B all the time, guarantees reliable sealing.

As long as magnitude of interference is controlled in the X value shown in Fig. 3 (b), because ripple struction is scalable, therefore increased tolerance during the present embodiment design, assembling without lifting an eyebrow.And the applying end with certain wall thickness and width can not produce puckering phenomena owing to assembling or negative pressure, has avoided abnormal sound.

In addition to the implementation, the utility model can also have other mode of executions.For example, bellows also can be various ripple struction or its combinations such as square wave, trapezoidal wave, circular arc ripple except that sawtooth wave; For another example, adjacent corrugations can be independent ring structure, also can be connected by spiral to constitute; Or the like.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. sealing joint spare comprises the socket end and the end of fitting, and it is characterized in that: described socket end is connected by bellows between holding with fitting.

2. sealing joint spare according to claim 1 is characterized in that: described bellows is the sawtooth wave structure.

3. sealing joint spare according to claim 1 is characterized in that: described bellows is the square wave structure.

4. sealing joint spare according to claim 1 is characterized in that: described bellows is the trapezoidal wave structure.

5. sealing joint spare according to claim 1 is characterized in that: described bellows is the circular arc wave structure.

6. according to the described sealing joint spare of one of claim 2 to 5, it is characterized in that: the adjacent corrugations of described bellows is independent ring structure.

7. according to the described sealing joint spare of one of claim 2 to 5, it is characterized in that: the adjacent corrugations of described bellows is connected formation by spiral.