JP2005090617A - Corrugated elastic-member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrugated elastic-member in which an engineering change (in reducing direction) of the restoring force on the drawing board can be made comparatively easily. <P>SOLUTION: The elastic member is formed in a corrugated shape by bending repeatedly alternately in reverse direction an elastic material having a rectangular or circular cross-section. In the elastic member, a thin part (c) is provided in each curved top part (1a) of the spring stock-body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a corrugated elastic member that can be composed of a synthetic resin or a metal material. In particular, the restoring force (elastic force) at the design stage of the elastic member is set to an appropriate value by a simple method. It is what you want to set.

For example, the corrugated elastic member is molded from a synthetic resin and incorporated as a part of the constituent member. For example, a means for connecting the spinner body and the discharge valve or a connection between the discharge valve and the suction valve. Dispensers used as means for the above are known (see Patent Document 1 and Patent Document 2).
Japanese Utility Model Publication No.57-29900 JP 2000-70787 A

  This type of elastic member is appropriately designed to have a predetermined restoring force (elastic force) so that the opening / closing operation of the valve is appropriately performed when the liquid in the container is discharged, but in combination with the valve member In such a case, problems such as a case where the valve body is not opened even when a predetermined pressure is applied to the valve body, and a restoring force of the elastic member is too large, causing a discharge operation to be heavy may occur.

  An object of the present invention is to propose a corrugated elastic member that can be easily changed to reduce the restoring force at the design stage.

  The present invention is an elastic member in which a spring element body having a rectangular cross section or a circular cross section is alternately bent repeatedly in a reverse direction and formed into a corrugated shape, and a thin-walled portion is provided at a curved top portion of the spring element body The corrugated elastic member.

  In the corrugated elastic member having the above-described configuration, the thin portion of the spring element body is preferably formed by appropriately cutting the curved top portion into a flat shape.

  The spring element body is preferably made of synthetic resin, and the corrugated elastic member can be incorporated as a constituent member of a dispenser capable of discharging an appropriate amount of contents such as liquid.

  By making the curved top portion of the spring element thin, it is possible to weaken the restoring force inherent to the corrugated elastic member, and smooth operation of other members (for example, a discharge valve, a suction valve, etc.) engaged therewith Can lead.

  Hereinafter, the present invention will be described more specifically with reference to the drawings.

  1 (a) to 1 (d) show an embodiment of a corrugated elastic member (corrugated leaf spring) according to the present invention, FIG. 1 (a) is a side view, and FIG. 1 (b) is a plan view. 1C is a cross-sectional view taken along the line AA, and FIG. 1D is a cross-sectional view taken along the line BB.

  In the figure, reference numeral 1 denotes a corrugated elastic member composed of a spring element having a rectangular cross section. The corrugated elastic member 1 is formed into a corrugated shape having curved top portions 1a that are alternately and repeatedly curved in opposite directions, and the curved top portions 1a are provided with thin portions c that are cut flat.

  In this type of leaf spring, the thickness t of the spring element body 1 including the curved top portion 1a is generally constant over the entire length, but the elastic member 1 according to the present invention is provided with the thin-walled portion c. Even after the elastic member 1 is molded, the restoring force can be set small, and in a dispenser incorporating the elastic member 1, the discharge valve and the suction valve can be operated smoothly.

  The thin-walled portion c can be formed at the same time as the waveform elastic member is molded (for example, injection molding or the like), but can also be formed by post-processing (cutting or the like) on the elastic member molded according to a normal procedure. This point is not limited.

  The thin portion c may be provided on one curved top portion 1a as long as a desired restoring force can be obtained, and the location and number of thin portions c can be arbitrarily selected.

  FIG. 2 shows a trigger-type dispenser (liquid ejector) constructed by incorporating a corrugated elastic member according to the present invention.

Such a dispenser includes a body 3 provided with a pump P (piston P ₁ , cylinder P ₂ , coil spring P ₃ ) for checking and pressurizing the operation lever 2 to suck and pressurize the liquid in the container, and at the tip of the body 3. An injection nozzle 4 that ejects liquid that is rotatably held and pumped through the feeding path 3a of the body 3 toward the outside, and a base cap that detachably engages and holds the body 3 with the mouth portion 5 of the container. 6 and a shroud (cover) 7 that covers the body 3 is combined.

  In the figure, reference numeral 8 denotes a suction pipe which is inserted and arranged in the suction path 3b of the body 3 and sucks up the liquid in the container. Reference numeral 9 denotes a nozzle cover which is fitted and held on the outer side of the injection nozzle 4. A barrier 9a for ejecting the liquid involved in ejection in the form of bubbles and a lever 9b for rotating the ejection nozzle 4 are provided.

  Reference numeral 10 denotes a spin element that is fixedly held on the exit side of the feeding path 3 a of the body 3 and has its tip fitted to the annular cylindrical portion 4 a of the injection nozzle 4. The spin element 10 connects the feed path 3a and the injection nozzle 4 and is connected to a swirl flow path formed on the back surface of the spray nozzle 4 or the tip surface of the spin element 10 in order to give a swirling force to the pumped liquid. One groove 10a (see FIGS. 3 and 4) is provided on the peripheral wall, and the groove 10a is formed on the inner wall of the annular cylindrical portion 4a by appropriately rotating the injection nozzle 4 at a predetermined angle by the lever 9b of the nozzle cover 9. It is possible to switch between an open state and a closed state in alignment with at least one groove provided in the shaft in the axial direction. 3 and 4 have a positional relationship that does not originally appear in the cross-sectional view in order to explain the alignment state of the grooves of the injection nozzle 4 and the spin element 10. The alignment state (injectable state) of each groove is shown.

  11 is a discharge valve elastically supported at the rear end of the spin element 10 via a corrugated elastic member 1, 12 is a valve seat disposed in the feeding path 3 a and seats the discharge valve 11, and 13 is wave elastic on the valve seat 12. A suction valve elastically supported via the member 1, a valve seat 14 formed integrally with the body 3 for seating the suction valve 13, and a stopper 15 for preventing the operation lever 2 from being checked. The stopper 15 can be slid up and down in accordance with the rotation of the injection nozzle 4 (using a conventional mechanism such as a cam), and is used when the groove 10a of the spin element 10 is closed. 15 is engaged with the operation lever 2 to prevent the operation lever 2 from being checked.

  When the injection nozzle 4 is rotated to a predetermined position so as to open the groove 10a of the spin element 10 between the injection nozzle 4 and the feeding path 3a, the stopper 15 slides upward (FIGS. 2 and 2). 3) With this, the engagement of the stopper 15 with the operation lever 2 is released.

While牽曳the operating lever 2 in a state where the engagement of the stopper 15 is released to release the牽曳operation (the reciprocating movement of the piston P _1), since the cylinder P ₂ becomes a negative pressure, the suction valve 13 is opened, as shown in FIG. 3, the liquid in the container through the suction pipe 8 flows into the cylinder P _2.

With the pressurized fluid in the cylinder P ₂ is pressurized further to牽曳the operating lever 2 in this state, (at this time, the suction valve 13 is closed) the discharge valve 11 is opened if reaching a predetermined pressure, and the pressure As shown in FIG. 4, the pressure-related liquid is jetted to the outside through the feed path 3 a, the spin element 10, and the jet nozzle 4. Incidentally, when pushing the piston P ₁ by牽曳of the operating lever 2 is in the vessel through openings which are in the formed Fig formed from the groove, not shown in the lower cylinder P ₂ to a part of the inner wall of the cylinder P ₂ Outside air has been introduced to the bottom to prevent negative pressure in the container.

  Since the corrugated elastic member 1 incorporated in the dispenser as described above can change the restoring force relatively easily, the discharge valve 11 and the suction valve 13 can be reliably and smoothly operated, and the operation lever There is an advantage that the force required for checking 2 is small.

  Since the corrugated elastic member 1 according to the present invention can be formed integrally with other members when it is formed of synthetic resin, it contributes to the reduction of the number of parts.

  The corrugated elastic member 1 is exemplified as a leaf spring having a rectangular cross section, but the cross sectional shape thereof is appropriately changed as necessary. The dispenser in which the corrugated elastic member is incorporated in the present invention is not limited to the trigger-type dispenser described above, and can also be applied to a pump / spray dispenser having a vertical cylinder.

  By using the valve body of the dispenser as an elastic support member, the valve body can be operated smoothly, leading to stabilization of product quality.

BRIEF DESCRIPTION OF THE DRAWINGS Embodiment of the waveform elastic member according to this invention is shown, (a) is a side view, (b) is a top view, (c) is AA sectional drawing, (d) is BB sectional drawing. It is. It is the figure which showed the structure of the trigger type dispenser. It is the figure which showed the operating state of the dispenser shown in FIG. It is the figure which showed the operating state of the dispenser shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waveform elastic member 1a Curved top part 2 Operation lever 3 Body 3a Feeding path 3b Suction path 4 Injection nozzle 5 Container mouth part 6 Base cap 7 Shroud 8 Suction pipe 9 Nozzle cover 9a Barrier 9b Lever 10 Spin element 10a Groove 11 Discharge valve 12 Valve seat 13 Suction valve 14 Valve seat 15 Stopper c Thin part P Pump

Claims (4)

An elastic member formed into a corrugated shape by repeatedly curving spring bodies having a rectangular cross section or a circular cross section alternately in opposite directions,
A corrugated elastic member characterized in that a thin-walled portion is provided at a curved top portion of the spring element body.   The corrugated elastic member according to claim 1, wherein the thin portion is formed by cutting a curved top portion flatly.   The corrugated elastic member according to claim 1, wherein the spring element body is made of a synthetic resin.   The corrugated elastic member according to claim 1, wherein the corrugated elastic member is incorporated as a constituent member of a dispenser.

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