CN209278553U

CN209278553U - A kind of detergent launches the piston structure of switching valve

Info

Publication number: CN209278553U
Application number: CN201821688925.XU
Authority: CN
Inventors: 鲍鹏飞; 沈灵峰
Original assignee: Hangzhou Kambayashi Electronics Co Ltd
Current assignee: Hangzhou Kambayashi Electronics Co Ltd
Priority date: 2018-10-18
Filing date: 2018-10-18
Publication date: 2019-08-20
Anticipated expiration: 2028-10-18

Abstract

The utility model relates to the detergent in washing machine to launch switching valve, specifically disclose a kind of piston structure of detergent dispensing switching valve, piston cap including piston rod He the head for being connected to piston rod, the head of the piston cap is equipped with through-hole, the head of piston rod, which is equipped with, extends filling part, the through-hole for extending filling part and passing through piston cap of the piston rod.The utility model opens hole on piston cap, extension filling part is set on the piston rod, change the traditional structure that piston cap is contacted with detergent, contact metallic piston bar or plastics front bar with detergent, to effectively prevent detergent to corrosion, the expansion of piston cap is avoided, keeps pipeline unobstructed, to extend the service life of switching valve, the quality of washing machine product is improved.

Description

A kind of detergent launches the piston structure of switching valve

[technical field]

Switching valve is launched the utility model relates to the detergent in washing machine more particularly to detergent is launched in switching valve and lived The improvement of plug structure.

[background technique]

It is the product of the important component in washing machine, service performance and service life to washing machine product that detergent, which launches switching valve, Matter has important influence.

As shown in Figure 1, it is using documented by Chinese patent CN103438262B that current detergent, which launches switching valve all, Switching valve, the switching valve performance are stablized, but in actual use, since there are some meetings and rubber materials in certain detergent The substance to react, these substances can invade in the strand of the piston cap of rubber material, and piston cap is caused to expand, and be formed such as Expansion protrusion 3 shown in Fig. 2,3 meeting blocking pipeline of expansion protrusion, finally makes to switch defective valve, to seriously affect entire The service life of switching valve causes the quality problems of terminal washing machine product.

[utility model content]

The purpose of this utility model is exactly to solve the problems of the prior art, proposes that a kind of detergent launches the work of switching valve Plug structure, be able to solve piston cap expansion and caused by pipeline blockage problem, extend the service life of switching valve.

To achieve the above object, the utility model proposes the piston structures that a kind of detergent launches switching valve, including work The piston cap of stopper rod and the head for being connected to piston rod, the head of the piston cap are equipped with through-hole, and the head of piston rod, which is equipped with, prolongs Filling part is stretched, the through-hole for extending filling part and passing through piston cap of the piston rod, raised both seals are on the head of piston cap.

Preferably, the head for extending filling part, which is additionally provided with diameter, is greater than the raised sealing for extending filling part, protrusion is close Envelope portion is sealed in the head of piston cap.

Preferably, it is described protrusion sealing head be additionally provided at least one guiding rib, the guiding rib to piston, thus Valve seat is protected not to be damaged.

Preferably, the quantity of the guiding rib is 3,3 guiding ribs are circumferentially symmetrical, this 3 symmetrical Structure can play best guide effect.

Preferably, the piston rod includes metal foot piece and the plastics front bar for being connected to metal tail club head, because living Plug inherently metal material and detergent have contacted long and have also been easy to appear problem；Therefore piston crown stability is good Plastics link together to make, then with the piston machine of metal portion, to further extend the service life of entire piston rod.

Preferably, the piston rod is integrated metal rod structure, the structure is simple, easy to process, at low cost.

Preferably, the piston rod is equipped with clamping protrusion, the inside of piston cap is equipped with clamping inner hole, the piston rod Clamping protrusion be connected in the clamping inner hole of piston cap and realize clamping connection, the clamping structure is simple, in formed product one It is body formed to form, simplify manufacturing process.

The utility model has the beneficial effects that the utility model opens hole on piston cap, extension filling is set on the piston rod Portion changes the traditional structure that piston cap is contacted with detergent, contacts metallic piston bar or plastics front bar with detergent, from And detergent is effectively prevented to corrosion, the expansion of piston cap is avoided, keeps pipeline unobstructed, to extend the use longevity of switching valve Life, improves the quality of washing machine product.

The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.

[Detailed description of the invention]

Fig. 1 is the structural schematic diagram that detergent launches switching valve in the prior art；

Fig. 2 is the structural schematic diagram that detergent launches in switching valve after piston cap dilatancy in the prior art；

Fig. 3 is the structural schematic diagram that detergent involved by the utility model embodiment one launches switching valve；

Fig. 4 is the portion A enlarged drawing in Fig. 3；

Fig. 5 is the structural schematic diagram of piston cap in the utility model embodiment one；

Fig. 6 is the structural schematic diagram of piston rod in the utility model embodiment one；

Fig. 7 is the structural schematic diagram that detergent involved by the utility model embodiment two launches switching valve；

Fig. 8 is the portion B enlarged drawing in Fig. 7；

Fig. 9 is the structural schematic diagram of piston rod in the utility model embodiment two；

Figure 10 is the structural schematic diagram that detergent involved by the utility model embodiment three launches switching valve；

Figure 11 is the portion the C enlarged drawing of Figure 10；

Figure 12 is the portion the D enlarged drawing of Figure 10；

Figure 13 is the structural schematic diagram of piston rod in the utility model embodiment three；

Figure 14 is the structural schematic diagram of piston rod in the utility model embodiment four.

[specific embodiment]

Embodiment one:

Refering to Fig. 3,4,5,6, detergent launches the piston structure of switching valve, including piston rod 1 and is connected to piston rod 1 The piston cap 2 on head, the head of the piston cap 2 are equipped with through-hole 21, and the head of piston rod 1, which is equipped with, extends filling part 11, extend The head of filling part 11 is equipped with diameter and is greater than the raised sealing 12 for extending filling part 11, the extension filling part of the piston rod 1 11 pass through the through-hole 21 of piston cap 2, and raised sealing 12 is sealed in the head of piston cap 2.It is convex that the piston rod 1 is equipped with clamping 16 are played, the inside of piston cap 2 is equipped with clamping inner hole 22, and the clamping protrusion 16 of the piston rod 1 is connected in the clamping of piston cap 2 Clamping connection is realized in hole 22.After the structure is improved, the area that 90% or more piston cap is contacted with detergent can reduce, thus The expansion of piston cap is reduced, the raised sealing 12 on 1 head of piston rod is contacted with detergent, not perishable or deformation.

Embodiment two:

Refering to Fig. 7,8,9, the present embodiment is further added by 3 edges on the head of raised sealing 12 on the basis of implementing one The symmetrical guiding rib 13 of circumference, which can play the role of piston guide, so that valve seat be protected not to be damaged.

Embodiment three:

Refering to fig. 10,11,12,13, the present embodiment is on the basis of example 2, piston rod 1 to be changed to metal foot piece 14 and it is connected to the plastics front bar 15 on 14 head of metal foot piece, because the inherently metal material of piston rod 1, contacts with detergent It is also easy to appear problem long, therefore is changed to two parts composition, plastics front bar 15 is made of the good plastics of stability, The piston machine with metal foot piece 14 links together again, and such plastics front bar 15 is contacted with detergent, not perishable or deformation.

Example IV:

Refering to fig. 12, the present embodiment is subtracted on the head of plastics front bar 15 with guiding rib on the basis of embodiment three 13, this embodiment simplifies product structures, reduce costs, and can achieve the purpose of this utility model.

Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new Scheme after type simple transformation belongs to the protection scope of the utility model.

Claims

1. a kind of detergent launches the piston structure of switching valve, the work including piston rod (1) and the head for being connected to piston rod (1) Cock cap (2), it is characterised in that: the head of the piston cap (2) is equipped with through-hole (21), and the head of piston rod (1) is equipped with to extend and fill out It fills portion (11), the extension filling part (11) of the piston rod (1) passes through the through-hole (21) of piston cap (2).

2. the piston structure that a kind of detergent as described in claim 1 launches switching valve, it is characterised in that: the extension filling The head in portion (11) is additionally provided with diameter and is greater than the raised sealing (12) for extending filling part (11), and the protrusion sealing (12) is close It is enclosed in the head of piston cap (2).

3. the piston structure that a kind of detergent as described in claim 1 launches switching valve, it is characterised in that: the extension filling The head in portion (11) is additionally provided at least one guiding rib (13).

4. the piston structure that a kind of detergent as claimed in claim 3 launches switching valve, it is characterised in that: the guiding rib (13) quantity is 3, and 3 guiding ribs (13) are circumferentially symmetrical.

5. a kind of detergent launches the piston structure of switching valve according to any one of claims 1 to 4, it is characterised in that: The piston rod (1) includes metal foot piece (14) and the plastics front bar (15) for being connected to metal foot piece (14) head.

6. a kind of detergent launches the piston structure of switching valve according to any one of claims 1 to 4, it is characterised in that: The piston rod (1) is integrated metal rod structure.

7. a kind of detergent launches the piston structure of switching valve according to any one of claims 1 to 4, it is characterised in that: The piston rod (1), which is equipped with, to be clamped raised (16), and the inside of piston cap (2) is equipped with clamping inner hole (22), the piston rod (1) Clamping raised (16) be connected in the clamping inner hole (22) of piston cap (2) and realize clamping connection.