Utility model content
The purpose of this utility model is to provide a kind of hand negative pressure device, it has negative regulation, and structure is simple,
Without being frequently the advantages of negative pressure device restores negative pressure.
The solution that the utility model solves its technical problem is: a kind of hand negative pressure device, including negative pressure bottle, company
Connector, piston seat, the piston for being set to piston seat bottom, handle, spring(-supported) mount, the piston and the sealing of negative pressure bottle inner wall cooperate,
Negative pressure bottle is divided into epicoele and cavity of resorption by the piston, at least one constant force spring, institute are equipped between the piston seat and spring(-supported) mount
It states connector and is arranged in negative pressure bottle bottom, the spring(-supported) mount is fixed on the epicoele end of negative pressure bottle, and described handle one end is located at negative
The outside of pressure bottle, the handle other end pass through spring(-supported) mount and protrude into after the epicoele of negative pressure bottle the top for withstanding on piston seat, the handle
Or spring(-supported) mount is equipped with the fixation device for fixed handle position.
As a further improvement of the above technical scheme, the fixed device include with buckle elastic tongue piece and with buckle
Corresponding deck, elastic tongue piece are set on handle, and deck is set on spring(-supported) mount.
As a further improvement of the above technical scheme, the piston is equipped with the check valve of connection epicoele and cavity of resorption, institute
It states and is equipped with check valve in connector.
As a further improvement of the above technical scheme, the cavity of resorption of described connector one end and negative pressure bottle connects, connector
The other end is equipped with tower-shaped connector.
As a further improvement of the above technical scheme, the cavity of resorption bottom of the negative pressure bottle is disposed with water-absorbent material.
As a further improvement of the above technical scheme, the negative pressure bottle end is equipped with upper housing and lower case.
As a further improvement of the above technical scheme, the spring(-supported) mount is in a center of symmetry to slotting by identical two components
Connection composition.
The beneficial effects of the utility model are: the utility model negative pressure device pulls constant force bullet by manual driving handle
Spring, constant force spring makes piston mobile when resetting, generates negative pressure cavity, push a handle that can provide negative pressure for a long time, without frequency
It is numerous to restore negative pressure for negative pressure device, it is time saving and energy saving, stable negative pressure can be provided for negative pressure bottle using constant force spring, prevent pressure instability
Ineffective or even secondary damage is caused, handle and piston seat use separation design, drive when preventing piston seat from moving upwards
Handle influences surrounding objects, or because ambient enviroment causes handle to be obstructed, interferes the normal work of negative pressure bottle.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to the design of the utility model, specific structure and generation
It clearly and completely describes, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of the embodiment of the utility model, rather than whole embodiments, it is based on the embodiments of the present invention, the skill of this field
Art personnel other embodiments obtained without creative efforts belong to the model of the utility model protection
It encloses.
Referring to Fig.1~Fig. 4, a kind of hand negative pressure device, including negative pressure bottle 1, connector 2, piston seat 3, it is set to work
Piston 4, handle 5, the spring(-supported) mount 6 of 3 bottom of obturating plug, the piston 4 cooperate with the sealing of 1 inner wall of negative pressure bottle, and the piston 4 is by negative pressure
1 point of bottle is epicoele 7 and cavity of resorption 8, at least one constant force spring 13, the connector are equipped between the piston seat 3 and spring(-supported) mount 6
2 are arranged in 1 bottom of negative pressure bottle, and the spring(-supported) mount 6 is fixed on 7 end of epicoele of negative pressure bottle 1, and described 5 one end of handle is located at negative pressure
The outside of bottle 1,5 other end of handle passes through spring(-supported) mount 6 and protrudes into after the epicoele 7 of negative pressure bottle 1 top for withstanding on piston seat 3, described
Handle 5 or spring(-supported) mount 6 are equipped with the fixation device for 5 position of fixed handle.The one end of handle 5 outside negative pressure bottle 1 is set
It is calculated as facilitating the handle shapes of pressing.The original state of negative pressure device is preset negative pressure, at this point, handle 5 is by piston seat 3 together with work
Plug 4 is pushed into 1 bottom of negative pressure bottle, and constant force spring 13 is stretched, and is in elastic stage, with being set to consolidating on handle 5 and spring(-supported) mount 6
Determine device and handle 5 is fixed on this position, piston seat 3 and piston 4 can be prevented to spring back under the pulling force effect of constant force spring 13.
Be further used as preferred embodiment, the fixed device include the elastic tongue piece 10 with buckle 11 and with buckle
11 corresponding decks 12, elastic tongue piece 10 are set on handle 5, and deck is set on spring(-supported) mount 6.Elastic tongue piece 10 is long flat
Shape is set in the strip through-hole of handle 5, can be under force toward rolling to each side, and elastic tongue piece 10 is located at when not stressing
Among through-hole.Referring to Fig. 3, when handle 5 is pushed to bottom position, elastic tongue piece 10 can't completely into negative pressure bottle 1, and
It is the position and space there are a part for Manual press, it is manual in the side (arrow is directed toward position in Fig. 3) of elastic tongue piece 10
Apply a lateral force, elastic tongue piece 10 is made to bend towards the side of buckle 11.Buckle 11 has a hook protrusion, and deck 12 has
There is groove of the opening towards bottom of bottle.After buckle 11 on elastic tongue piece 10 is stuck in the deck 12 on spring(-supported) mount 6 Nei, removes and be applied to
The power of 10 side of elastic tongue piece, since the protrusion of buckle 11 is stuck in the slot of deck 12, elastic tongue piece 10 does not return to original position,
Handle 5 is fixed in this position at this time, so that piston seat 3 and piston 4 also are secured to 1 bottom position of negative pressure bottle.
It is further used as preferred embodiment, the piston 4 is equipped with the check valve 9 of connection epicoele 7 and cavity of resorption 8, institute
It states and is equipped with check valve 9 in connector 2.Check valve 9 uses rubber check valve, has the function of " positive water conservancy diversion, reversely by ", living
Filling in the check valve 9 at 4 makes gas be only capable of flowing to epicoele 7 from cavity of resorption 8, and the check valve 9 in connector 2 makes gas be only capable of flowing to cavity of resorption
8, and cannot be flowed out from cavity of resorption 8 by connector 2.The epicoele 7 of negative pressure bottle 1 is communicated with the atmosphere, and cavity of resorption 8 is that negative pressure generates chamber.When
When using negative pressure device, fixed handle 5 is pressed downwards first, the protrusion of buckle 11 is made to skid off the groove of deck 12,10 meeting of elastic tongue piece
State when not stressing is recoiled under the effect of elasticity, and smoothly handle 5 can be extracted out from piston seat 3 at this time, can be prevented
Band fixed handle 5, influences surrounding objects, or because ambient enviroment causes handle 5 to be obstructed when piston seat 3 moves upwards, and interferes negative pressure
The normal work of bottle 1.After extracting handle 5 out, the band piston 4 under the pulling force of constant force spring 13 of piston seat 3 is moved up, at this point,
It is negative pressure in cavity of resorption 8, gas enters cavity of resorption 8 by connector 2 by drainage tube.When needing to restore negative pressure for negative pressure bottle 1, use
Piston seat 3 is pushed back to 1 bottom of negative pressure bottle together with piston 4 by handle 5, on gas is overflow back by the check valve 9 of piston 4 in cavity of resorption 8
Chamber 7, into atmosphere.Because gas will not flow back at connector 2, it is not necessary that the drainage tube that connector 2 is connected to is removed
Operation, it is therefore prevented that subnormal ambient is contaminated when removing drainage tube, also greatly simplifies operation.Due to using constant force spring
As energy converting structure, when work, can't generate noise.
It is further used as preferred embodiment, described 2 one end of connector is connect with the cavity of resorption 8 of negative pressure bottle 1, connector 2
The other end is equipped with tower-shaped connector, can be used to connect the drainage tube for negative pressure dressing.Certainly, connector 2 can also be with negative pressure bottle 1
It is structure as a whole.
It is further used as preferred embodiment, 8 bottom of cavity of resorption of the negative pressure bottle 1 is disposed with water-absorbent material, this implementation
SAP high hydroscopic resin is used in example, can be effectively prevented vacuum suction has liquid to enter rear influence negative pressure in cavity of resorption 8 in the process
Device works normally.
It is further used as preferred embodiment, 1 end of negative pressure bottle is equipped with upper housing 14 and lower case 15, negative pressure bottle
1 use snaps connection upper housing 14 and lower case 15, keeps equipment beautiful, secured, certainly, negative pressure bottle 1 and upper housing 14, lower case
15 may be other connection types, and upper housing 14 is reserved with handle aperture, and lower case 15 is reserved with connector mouth.
It is further used as preferred embodiment, the spring(-supported) mount 6 is in a center of symmetry to slotting company by identical two components
Composition is connect, referring to fig. 4, identical to inserting structure using male and female, splicing position path cylindrical structure is inserted into major diameter hollow cylinder,
Cylinder axis body is formed on spring(-supported) mount 6, to install and fix constant force spring, since entire spring(-supported) mount 6 is by two disassembled portions
Part composition, when installing spring(-supported) mount 6, facilitates the end that spring(-supported) mount 6 is fixed on to negative pressure bottle 1.
Be above the better embodiment of the utility model is illustrated, but the utility model create and it is unlimited
In the embodiment, those skilled in the art can also make various without departing from the spirit of the present invention
Equivalent modifications or replacement, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.