JP2012179519A - Trigger type liquid injection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new trigger type liquid injection device capable of reliably pulling and returning a lever without causing the lever to come off a body.SOLUTION: The trigger type liquid injection device 1 includes: a body 2 which has a body mounted in a mouth 23 of a container 20, and is provided with a cylinder in communication with a passage rformed inside the body; a piston 3 arranged in the cylinder; and a lever 4 which is engaged with the piston 3, and can be pulled and returned to the body 2, and injects the content from an injection port Aby operating the piston 3 by the repetition of pulling and returning the lever 4. The body includes an extended passage 2c having an internal passage rin communication with the passage rformed inside, and extending forwardly. An opening Afor making the extended passage 2c pass therethrough is formed in the lever 4. The lever 4 is rotatably pivoted in the extended passage 2c arranged in the opening A.

Description

  The present invention relates to a trigger type liquid ejector that ejects contents in a container to the outside world by repeatedly checking and returning a lever.

  As a trigger type liquid ejector, a cylinder is provided in the body attached to the mouth of the container, and the piston placed in this cylinder is operated by repeatedly checking and returning the lever, thereby bringing the contents of the container to the outside. There is something to inject (for example, refer to patent documents 1).

No. 03-23321 Japanese Utility Model Publication No. 06-47587

  However, in the conventional trigger type liquid ejector, two arm portions are provided in the upper part of the lever body with a space therebetween in the width direction, and the arm portions are respectively inserted into the body so as to sandwich the body between these arm portions. It is pivotally supported on the side of the machine. For this reason, when the arm part is pivotally supported only by the concave-convex fitting with respect to the body, it is conceivable that the lever is detached from the body when the arm part is greatly deformed outward. In this case, the user must fit the lever to the body again and again, and there is room for improvement in convenience.

  An object of the present invention is to provide a novel trigger type liquid ejector that can reliably check and return the lever without the lever being detached from the body.

  The present invention includes a body having a main body attached to a mouth portion of a container and provided with a cylinder leading to a passage formed inside the main body, a piston disposed in a cylinder provided in the body, Trigger type that has a lever that engages the piston and can check and return to the body, and causes the piston to operate by repeatedly checking and returning the lever, thereby ejecting the contents from the outlet The liquid ejector is provided with an extension passage portion extending in the forward direction in the body main body and having an internal passage leading to a passage formed inside thereof, and an opening through which the extension passage portion is passed through the lever. , And the lever is rotatably supported by an extended flow path portion disposed in the opening.

  According to the present invention, an opening formed in the lever is formed, and the frame portion disposed on the upper side of the extension channel portion is extended in the front-rear direction so as to cover the shaft support portion with the extension channel portion. Can do.

  In the present invention, an opening is formed in the lever, and the lever is pivotally supported on the extension flow path portion of the body that passes through the opening, so that the lever has a side wall whose rigidity is increased by forming the opening. It is pivotally supported with respect to the extended flow path part. That is, the lever is pivotally supported with respect to the extended flow path portion by the side wall that is not easily deformed outward.

  Therefore, according to the present invention, the lever can be reliably checked and returned without being detached from the body.

It is a principal part perspective view which shows the state which employ | adopted the trigger type sprayer which is one form of the trigger type liquid ejector which is this invention for the bottle type container. It is a front view which shows the sprayer which concerns on the same form. It is a left view which shows the same sprayer. It is a top view which shows the sprayer. It is principal part sectional drawing which shows the same form in the XX cross section of FIG. It is an exploded view which decomposes | disassembles and shows the form to a lever, an elastic member, and a pump main body. (a) is a front view of the stopper according to the embodiment, and (b) is a side view of the stopper according to the embodiment.

  Hereinafter, with reference to drawings, trigger type sprayer 1 which is one form of the present invention is explained in detail.

A trigger sprayer 1 shown in FIG. 1 is mounted on a synthetic resin bottle-type container 20. The container 20 includes, for example, a body portion 21 that uses a hairdressing agent or the like as an internal solution and forms a filling space C ₁ for the internal solution. As shown in FIG. 5, the container 20 has a mouth portion 23 integrally connected to the trunk portion 21 via a shoulder portion 22, and an opening portion A ₁ leading to the filling space C ₁ is formed in the mouth portion upper end 23 e. .

The trigger type sprayer 1 ejects the internal solution in the filling space C ₁ through the opening A ₁ . The trigger type sprayer 1 has a body 2 that is sealed with an annular seal member 8 such as an O-ring between the mouth upper end 23e.

The body 2 has a main body (hereinafter referred to as “body main body”) 2a, and a cylinder 2b for sucking, pressurizing, and feeding the internal solution is integrally provided in the body main body 2a so as to be directed forward. Yes. Cylinder 2b is connected through an opening A ₂ to the duct r ₁ which is formed inside the main body 2a, is arranged in the passage r _1, typified by ball valve, the content liquid introduced from the intake valve V Is done. The body main body 2a is integrally provided with an extended flow path portion 2c extending in the forward direction.

A piston 3 is arranged inside the cylinder 2b. The piston 3 forms a pump chamber C ₂ between the cylinder 2b. The piston 3 operates by repeatedly checking and returning the lever 4. The piston 3 is integrally provided with a piston shaft 3a. A hook portion 3b is provided at the tip of the piston shaft 3a. The piston 3 is supported by a hook portion 3b so as to be rotatable with respect to a shaft portion 4s provided on the lever 4. Moreover, the lever 4 is hold | maintained so that rotation with respect to the body 2 is possible via the axial part 2s provided in the extension flow path part 2c.

  Between the body 2 and the lever 4, a biasing member 5 that provides a restoring force against the check of the lever 4 is disposed. The urging member 5 has a fixing portion 5a fixed to the body 2, and urges the lever 4 to an initial position where it can be checked by an elastic piece 5b integrally connected to the fixing portion 5a.

The lever 4 is further formed with an opening A ₃ through which the extended flow path portion 2c passes. Opening A ₃ has two side walls 4a which are spaced in the width direction of the lever 4 forms the side edge of the opening A _3, is stretched therebetween opening A ₃ of the side walls 4a is shaped in the panel 4b that forms the lower edge, a frame 4c which is stretched therebetween in the side walls 4a form an upper edge of the opening a ₃ of the. Thus, the lever 4 can be rotatably supported by the extended channel portion 2c arranged in the opening A _3.

Lever 4, Of the side walls 4a, a side wall 4a ₁ to form the opening portion A _3, recess 4d which rotatably fitted is formed a shaft portion 2s provided in the extension channel portion 2c. Thereby, the lever 4 can be checked and returned to the body 2 by being held rotatably with respect to the extension flow path portion 2c. In this embodiment, the side wall 4a ₁ is further formed with a groove 4e for guiding the shaft 2s to the recess 4d.

A nozzle 6 is fixed to the tip of the extended flow path portion 2c. Nozzle 6, together with the extension passage section 2c, to form an internal passage r ₂ for establishing communication with the flow passage r ₁ to the outside world. A nozzle A ₄ for ejecting the inner solution is formed at the tip of the nozzle 6. An element 7 for spraying the internal solution is provided inside the tip of the nozzle 6. The lever 4 is provided with a plurality of octagonal slip stoppers, which are omitted in FIG.

The body 2 is sealed by sandwiching the seal member 8 between the shoulder 2d and the mouth upper end 23e. The shoulder 2d is provided with a through-hole (hereinafter referred to as “air replacement hole”) A ₅ that allows the filling space C ₁ to communicate with the outside through an opening A ₁ formed in the mouth upper end 23e.

Further, the sealing member 8, as shown in FIG. 5, the inner peripheral edge 8a extends from the mouth upper end 23e inside the opening A _1. That is, the inner peripheral edge 8a of the seal member 8 is configured as an annular elastic piece (hereinafter referred to as "elastic valve") that can be deformed and restored with the mouth end upper end 23e as a base point. Thus, the elastic valve 8a, a base point a mouth upper 23e, it is possible to close the air displacement holes A ₅ openably.

In the trigger type sprayer 1, the piston 3 is operated by repeatedly checking and returning the lever 4, so that the internal solution sucked into the pump chamber C ₂ and pressurized is ejected through the passages r ₁ and r _2. It is sprayed from a _4. In this way, if the pressure in the filling space C ₁ decreases as the contents are ejected, the negative elastic pressure deforms the annular elastic piece 8 a formed by the inner peripheral edge of the seal member 8 to replace the air. by opening the hole a _5, it is possible to perform air replacement with the outside world. Moreover, if the pressure in the filling space C ₁ rises due to air replacement with the outside, the restoration of the elastic piece 8a is restored and the air replacement hole A ₅ is closed, so that the filling space C ₁ is opened to the outside again. It will not be done. In FIG. 5, reference numeral 9 is a suction pipe for sucking the internal solution from the filling space C _1.

In the present invention, since the opening A ₃ is formed in the lever 4, the two side walls 4 a ₁ that form the opening A ₃ are stretched up and down along the width direction of the lever 4 to form the opening A ₃ . The panel portion 4b and the frame portion 4c forming the top and bottom improve the rigidity (strength) in the lateral direction. For this reason, if the lever 4 is pivotally supported by the extension flow path part 2c that has passed through the opening A ₃ as in the present embodiment, the lever 4 has a side wall 4a that has increased rigidity by forming the opening A _{3. 1} is pivotally supported with respect to the extended flow path portion 2c.

That is, the lever 4 is pivotally supported with respect to the extension flow path part 2c by the side wall 4a _{1 which} is not easily deformed outward. Therefore, according to this embodiment, the lever 4 does not come off the body 2, and the lever 4 can be reliably checked and returned.

Further, in this embodiment, the frame portion 4c disposed above the extension channel portion 2c formed the opening A ₃ formed in the lever 4, as shown in FIG. 5, the axis of the extension passage section 2c It extends in the front-rear direction so as to cover the support portions (2s, 4d). In this case, the two side walls 4a ₁ are not easily deformed outward due to an increase in the coupling area with the frame portion 4c. Therefore, this configuration is effective for preventing the lever 4 from falling off.

Here, reference numeral 10 denotes a stopper that prevents the lever 4 from being checked. The stopper 10 has a contact portion F ₁ that contacts the back surface 4 g of the lever 4 and a contact portion F ₂ that contacts the tip 2 f of the cylinder 2 b provided on the body 2, and is interposed between the cylinder ₂ b and the lever 4. Then, the check of the lever 4 is prevented.

In this embodiment, a flange portion 11 extending in the front-rear direction between the cylinder 2b and the lever 4 and a base portion 12 standing up from the flange portion 11 are formed. The contact portion F ₁ is the front and rear ends 11 a of the flange portion 11, and the contact portion F ₂ is the front and rear ends of the base portion 12. Thus, the stopper 10 is interposed between the tip 2 f of the cylinder 2 b provided on the body 2 and the back surface 4 g of the lever 4, thereby preventing the lever 4 from being checked. In this embodiment, the base portion 10b is formed in a plate shape, and a step portion S is formed in the front-rear direction, and a side edge forming the step portion S is configured as the contact portion F _2. Without providing S, the contact portion F ₂ can be configured.

  Further, the stopper 10 is integrally provided with two elastic pieces 13 for detachably sandwiching the piston shaft 5a. The elastic piece 13 has an arc portion 13a that holds the piston shaft 5a. The arc portion 13a is shaped so that its inner peripheral surface surrounds the piston shaft 5a. Furthermore, the free end side end portion 13b of the circular arc portion 13a is extended outward by inclining so that the end edges 13e move away from each other.

  In this embodiment, the stopper 10 is interposed between the tip 2f of the cylinder 2b provided on the body 2 and the back surface 4g of the lever 4 by being sandwiched between the piston shafts 5a and prevents the lever 4 from being checked. . And in use, it can be removed from the piston shaft 5a. That is, since the stopper 10 is configured separately from the trigger type ejector 1, if the stopper 10 is removed from the trigger type ejector 1, the trigger type ejector 1 gives a clean appearance impression. Further, since the two elastic pieces 13 are detachably sandwiched, it can be used for various trigger-type ejectors 1, and the assembly work for the trigger-type ejectors 1 is easy.

  Therefore, according to this embodiment, the trigger type liquid ejector 1 is excellent in versatility and easy to assemble while giving a clean appearance impression.

  Further, as in the present embodiment, the elastic piece 13 has an arc portion 13a for holding the piston shaft 5a, and the free end side end portion 13b of the arc portion 13a is inclined so that the respective end edges 13e move away from each other. If it is made to extend outward by doing, assembly work will become still easier.

The above description only shows one embodiment of the present invention, and various modifications can be made within the scope of the claims. For example, according to the present embodiment, the body 2, although the cylinder 2b are provided integrally to direct forward, by interposing between the passage r ₁ built in the main body 2a, Patent Document 1 of the present invention It can also be applied to the trigger type ejector disclosed in the above. Further, the panel 4b that forms the lower edge of the opening A ₃ are similar to the frame 4c which forms the upper edge of the opening A _3, may be replaced by a frame (ribs). Furthermore, the panel 4b can be omitted by using only the frame 4c constituting the upper end of the conventional lever.

  In addition, the recessed part provided in the upper part of the body main body 2a can be abbreviate | omitted. In addition, the body 2 can be connected to the mouth portion 23 via a separate ring cap, but in this embodiment, a mounting portion 2e for mounting on the mouth portion 23 is integrally provided. For the mounting portion 2e, the mounting method for the mouth portion 23 is not limited to this, such as a threaded engagement with the mouth portion 23 or an undercut fit. In the case where the mounting portion 2e is provided integrally, a better jet can be realized by effectively sealing between the body 2 and the mouth portion 23.

  The present invention has a body attached to the mouth of the container, a piston arranged in a cylinder provided in the body, and a lever that rotatably engages a piston shaft provided in the piston, If it is a trigger type liquid ejector that ejects the contents from the ejection port by repeating the check and return of the lever, it is not limited to those that eject the contents in a mist form, Can also be applied.

DESCRIPTION OF SYMBOLS 1 Trigger type sprayer 2 Body 3 Piston 3a Piston shaft 3b Hook part 4 Lever 4a Side wall 4a ₁ Opening side wall 4b Panel 4c Frame 4d Shaft support recessed part 4e Guide groove 4f Lever main body upper end frame 5 Energizing member 5a Fixing part 5b Elastic piece 6 Nozzle 7 Spray element 8 Seal member 9 Suction pipe 10 Stopper 11 Flange 12 Stopper base 13 Elastic piece 13a Arc 13b Free end of arc

Claims (2)

A body having a main body attached to the mouth portion of the container and provided with a cylinder leading to a passage formed inside the main body, a piston disposed in the cylinder provided in the body, and engaging with the piston And a lever capable of checking and returning to the body, and by operating the piston by repeatedly checking and returning the lever, a trigger type liquid ejector that ejects the contents from the outlet There,
The body main body is provided with an extended flow path portion extending in the forward direction with an internal passage leading to a passage formed on the inside thereof,
A trigger type liquid ejector characterized in that an opening for passing an extended flow path portion is formed in a lever, and the lever is rotatably supported by an extended flow path portion disposed in the opening.   In Claim 1, the opening part formed in the lever was formed, and the frame part arrange | positioned above an extension flow path part was extended in the front-back direction so that the axial support part with an extension flow path part might be covered. Trigger type liquid ejector characterized by.

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