JP2009039648A - Finger pump apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a finger pump apparatus which is free from such inconvenience that assembly work must be tried again when assembling order is incorrect, and when a stem driving lever is assembled into an apparatus body, is not disturbed by a lock mechanism, and hence has excellent assembly work efficiency. <P>SOLUTION: The finger pump apparatus is provided with the stem driving lever 35 connected tunably to the apparatus body 33 supporting a pump system 9 so as to push down and the lock mechanism 37 for controlling the turning of the stem driving lever 35, wherein the assembling work efficiency is improved by constituting the lock mechanism 37 of a switching member 43 movably installed in the stem driving lever 35 and a stopper projecting part 45 projectively provided in the apparatus body 33 to eliminate such inconvenience that the assembling of the lock mechanism 37 must be completed before the stem driving lever 35 is assembled. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a finger pump device that is used by being attached to a mouth portion of a container and ejects liquid in the container by pushing down a pump stem when a stem driving lever provided in the apparatus is operated.

  The finger pump device is, for example, mounted on the mouth of a container such as a PET bottle or a glass bottle, and enables the liquid inside the container to be ejected. For example, liquid detergent or perfume is ejected or insecticidal. It can be used for various applications such as injection of chemical liquids.

FIG. 10 shows a conventional example of the finger pump device.
The finger pump device 1 shown here is disclosed in the following Patent Document 1, and is capable of being pushed down to the device body 5 fixed to the mouth portion of the container 3 by screwing or the like, and to the shaft center portion of the device body 5. A pump stem 9 that ejects the liquid in the container 3 from the ejection head 7 at the tip of the stem by being supported and pushed down, and a stem drive that is pivotally supported at one end of the apparatus body 5 and depresses the pump stem 9 during the rotation operation. A lever 11 and a lock mechanism 13 for fixing the stem drive lever 11 at a position where the pump stem 9 is not pushed down are provided so that the stem drive lever 11 is not accidentally rotated when being carried.

  As shown in FIG. 11, the stem drive lever 11 has one end extending rearward of the pump stem 9 and is rotatably coupled to a lever support portion 17 formed integrally with the apparatus body 5 by a support pin 15. Yes.

As shown in FIG. 11, the locking mechanism 13 includes a stopper piece 24 that restricts the movement of the stem drive lever 11 to a lever member 23 that is rotatably coupled to the apparatus body 5 by a pin 21 that engages with the apparatus body 5. Are integrally formed.
As shown by an arrow X in FIG. 11, the lever member 23 rotates around the pin 21 and is positioned at the lock position shown in FIG. 10 (a), and the unlocking position shown in FIG. 10 (b). The position can be switched to the state of being positioned in the position.

When the lever member 23 is rotated to the lock position shown in FIG. 10A, the stopper piece 24 is caught in the gap between the apparatus main body 5 and the stem drive lever 11 as shown in FIG. The rotation of the stem drive lever 11 in the direction of pushing down 9 is restricted.
When the lever member 23 is rotated to the unlocking position shown in FIG. 10B, the stopper piece 24 is detached from the gap between the apparatus main body 5 and the stem drive lever 11 as the lever member 23 rotates. Thus, the stem drive lever 11 can be rotated in the direction in which the pump stem 9 is pushed down.

JP 2004-209319 A

However, when assembling the finger pump device 1 described above, it is indispensable to assemble the lever member 23 constituting the lock mechanism 13 to the device main body 5 before assembling the stem drive lever 11 to the device main body 5. Therefore, if the stem drive lever 11 is mistakenly assembled to the apparatus main body 5 first, the stem drive lever 11 must be removed and the operation must be performed again.
Further, when the stem drive lever 11 is attached to the apparatus main body 5, the lever member 23 previously attached to the apparatus main body 5 swings in the vicinity of the attachment position of the stem drive lever 11. It may be difficult to work.

  Therefore, an object of the present invention is to solve the above-mentioned problems, and there is no inconvenience that the operation is re-executed if the assembly order is wrong. Further, when the stem drive lever is assembled to the apparatus body, the lock mechanism obstructs the operation. Therefore, it is an object of the present invention to provide a finger pump device that can facilitate the attachment of a stem drive lever and improve productivity.

The present invention has been made in order to solve the above-described problem, and has an apparatus main body fixed to the mouth of the container by supporting a pump stem that injects the liquid in the container by a push-down operation so that the pump stem can be pushed down. In a finger pump device comprising a stem drive lever that is rotatably supported by the device main body and depresses the pump stem during a rotation operation, and a lock mechanism that fixes the stem drive lever at a position where the pump stem is not depressed.
The locking mechanism is
A switching member assembled to the stem drive lever so as to be movable between a lock position and an unlock position set on the stem drive lever;
A stopper projection that protrudes on the main body of the apparatus so that the switching member abuts when the switching member is in the locked position, and restricts the rotation of the stem drive lever by the abutment with the switching member; It is characterized by having.

  According to the above configuration, the switching member manufactured separately from the device main body as the lock mechanism is assembled to the stem drive lever assembled to the device main body, and the assembly timing is assembling the stem drive lever to the device main body. Both before and after assembling the stem drive lever to the apparatus main body, both of which are possible, and there is no inconvenience that the work will be reworked if the assembly order is incorrect.

  Further, the switching member constituting the lock mechanism is a switching member that becomes a lock mechanism when the stem drive lever is attached to the apparatus main body, if the stem drive lever is assembled to the apparatus main body after the stem drive lever is assembled to the apparatus main body. The protruding portion of the finger does not obstruct the mounting operation, and the mounting of the stem drive lever is facilitated, so that the productivity of the finger pump device can be improved.

  Hereinafter, a preferred embodiment of a finger pump device 1 according to the present invention will be described in detail with reference to the drawings.

  1 is a side view of an embodiment of a finger pump device according to the present invention, in which a stem drive lever is locked by a locking mechanism, FIG. 2 is a view taken in the direction of arrow A in FIG. 2 is a cross-sectional view taken along the line B-B of FIG. 2, FIG. 4 is an exploded perspective view of the stem driving lever and the switching member shown in FIG. 3 as viewed obliquely from above, and FIG. 5 is the stem driving lever and the switching member shown in FIG. FIG. 6 is a side view of an embodiment of the finger pump device according to the present invention, and a side view of a state in which the stem drive lever is unlocked by a lock mechanism, 7 is a cross-sectional view taken along arrow C in FIG. 6, FIG. 8 is a cross-sectional view taken along DD in FIG. 7, and FIG. 9 is a vertical cross-sectional view showing a state where the stem drive lever is rotated in the unlocked state shown in FIG. .

  The finger pump device 31 of this embodiment includes a device main body 33 that is fixed to a mouth portion of a container (not shown) by screwing or the like, and is supported by the shaft center portion of the device main body 33 so as to be able to be pushed down. A pump stem 9 for ejecting the liquid from the ejection head 7 at the tip of the stem, a stem drive lever 35 that is rotatably supported at one end by the apparatus main body 33 and depresses the pump stem 9 during the rotation operation, and erroneously carried A lock mechanism 37 for fixing the stem drive lever 35 at a position where the pump stem 9 is not pushed down is provided so that the stem drive lever 35 is not rotated.

  As shown in FIG. 3, the stem drive lever 35 has one end 35 a extending rearward of the pump stem 9 and is rotatably coupled to a lever support portion 39 formed integrally with the apparatus body 33 by a support pin 41. ing. Reference numeral 35 d in FIG. 4 is a hole into which the support pin 41 is inserted.

  As shown in FIG. 3, the stem drive lever 35 has a head insertion hole 35 b through which the ejection head 7 is inserted at a position corresponding to the ejection head 7. The head insertion hole 35 b is formed as an elongated hole along the rotation direction of the stem drive lever 35.

  The other end 35c of the stem drive lever 35 that extends further forward than the head insertion hole 35b is inclined obliquely downward so that the finger can be easily applied.

  In the case of the present embodiment, the lock mechanism 37 includes a switching member 43 attached to the stem drive lever 35 and a stopper protrusion 45 protruding from the apparatus main body 33 as shown in FIGS. ing.

As shown in FIGS. 4 and 5, the switching member 43 is provided with a guide block 48 that is inserted into a slide guide hole 47 formed in the stem drive lever 35.
The switching member 43 fits the guide block 48 in the slide guide hole 47 so that the position between the lock position set on the stem drive lever 35 and the unlock position is substantially horizontal in the front-rear direction of the stem drive lever 35. The stem drive lever 35 is slidably assembled.

  In FIG. 3, the guide block 48 is pushed all the way into the slide guide hole 47, the stepped portion 43a at the base end of the guide block 48 abuts on the upper edge 47a of the opening of the slide guide hole 47, and the switching member. 43 shows a stopped state. The stop position shown in FIG. 3 is a lock position.

  On the other hand, when the switching member 43 is pulled out from the lock position shown in FIG. 3 in the direction of arrow E, as shown in FIG. 8, the protrusion 51a of the elastic locking piece 51 provided in the guide block 48 becomes the slide guide hole. The stopper 47 engages with a retaining protrusion 47b mounted on the lower edge of the opening 47, and stops. The stop position shown in FIG. 8 is a lock release position.

  The pulling-out operation of the switching member 43 for moving the switching member 43 from the lock position to the lock release position is performed by gripping both side surfaces of the switching member 43 having an elliptic barrel shape.

Although not normally necessary, a method of removing the switching member 43 attached to the stem drive lever 35 from the stem drive lever 35 will be described.
As shown in FIGS. 7 and 8, when the switching member 43 is moved to the unlocking position, the gap 53 ahead of the elastic locking piece 51 is exposed on the upper surface side of the stem driving lever 35. Therefore, by inserting a hook member such as a wire into the gap 53 from above the switching member 43 and causing the protrusion 51a upward, the protrusion 51a and the retaining protrusion 47b can be disengaged from each other. The switching member 43 can be removed from the stem drive lever 35 by pulling out the switching member 43 in a state where the engagement with the retaining protrusion 47b is released.

  As shown in FIG. 3, when the switching member 43 is in the locked position, the stopper projection 45 projects from the apparatus main body 33 so that the lower edge 48a of the guide block 48 of the switching member 43 contacts. Thus, the rotation of the stem drive lever 35 is restricted by the contact of the switching member 43 with the guide block 48.

The stopper protrusion 45 is such that the top portion of the plate portion 45a extending in the width direction of the guide block 48 comes into contact with the lower edge 48a of the guide block 48. The plate portion 45a is orthogonal to the plate portion 45a on both sides thereof. Reinforcing ribs 45b are continuously provided to obtain sufficient buckling strength.
The reinforcing rib 45 b also serves as a part of the lever support portion 39.

  When the switching member 43 is in the unlocked position as shown in FIG. 8, the guide block 48 is retracted from above the stopper projection 45, and the lock function by the lock mechanism 37 does not work.

The finger pump device 31 described above is shown in FIG. 9 when the other end 35c of the stem drive lever 35 is pulled toward the device main body 33 in the state where the switching member 43 is in the unlocked position as shown in FIG. As described above, the stem drive lever 35 rotates downward about the support pin 41, the upper edge 55 of the head insertion hole 35 b abuts on the ejection head 7, and pushes down the ejection head 7.
As a result, the pump stem 9 is pushed down, and the liquid in the container is ejected from the ejection head 7 by the pump operation of the pump stem 9.
When the force pulling the other end 35c of the stem drive lever 35 is released, the stem drive lever 35 returns to the state shown in FIG. 8 by the restoring force of the pump stem 9 or the restoring force of a return spring (not shown).

  In the finger pump device 31 described above, the switching member 43 that is manufactured separately from the device main body 33 as the lock mechanism 37 is assembled to the stem drive lever 35 that is assembled to the device main body 33, and the assembly timing is low. Either after the stem drive lever 35 is assembled to the apparatus main body 33 or before the stem drive lever 35 is assembled to the apparatus main body 33, there is no inconvenience that the work is reworked if the assembly order is incorrect.

  Further, if the switching member 43 constituting the lock mechanism 37 is assembled to the stem drive lever 35 after the stem drive lever 35 is assembled to the apparatus main body 33, the stem drive lever 35 is attached to the apparatus main body 33. The protrusion of the switching member 43 serving as the lock mechanism 37 does not interfere with the mounting operation, and the mounting of the stem drive lever 35 is facilitated, whereby the productivity of the finger pump device can be improved.

  In the finger pump device according to the present invention, the movement form of the switching member on the stem drive lever is not limited to the linear slide movement shown in the above embodiment. For example, the design can be changed to a configuration in which the switching member is rotatably attached to the stem drive lever.

It is a side view of one Embodiment of the finger pump apparatus which concerns on this invention, and is a side view of the state in which the stem drive lever is locked by the locking mechanism. It is A arrow directional view of FIG. It is BB sectional drawing of FIG. FIG. 4 is an exploded perspective view of the stem drive lever and the switching member shown in FIG. It is the disassembled perspective view which looked at the stem drive lever and switching member shown in FIG. 3 from the diagonally downward front. It is a side view of one Embodiment of the finger pump apparatus which concerns on this invention, and is a side view of the state in which the stem drive lever is unlocked by the lock mechanism. It is C arrow line view of FIG. It is DD sectional drawing of FIG. It is a longitudinal cross-sectional view which shows the state which the stem drive lever rotated in the unlocking state shown in FIG. (A) is a side view when the lock mechanism of the conventional finger pump apparatus exists in a lock position, (b) is a side view when the lock mechanism exists in a lock release position. It is sectional drawing of the apparatus main body which shows the attachment position of a lock mechanism in the finger pump apparatus shown in FIG. 10, and a stem drive lever.

Explanation of symbols

7: injection head, 9: pump stem, 31: finger pump device, 33: device main body, 35: stem drive lever, 35a: one end, 35b: head insertion hole, 35c: other end, 35d: hole, 37: lock mechanism 39: Lever support part, 41: Support pin, 43: Switching member, 43a: Step part, 45: Stopper projection, 45a: Plate part, 45b: Reinforcement rib, 47: Slide guide hole, 47a: Upper edge, 47b: Retaining protrusion, 48: guide block, 51: elastic locking piece, 51a: protrusion, 53: gap, 55: upper edge

Claims (1)

An apparatus main body fixed to the mouth of the container by supporting a pump stem that ejects liquid in the container by a push-down operation so that the pump stem can be pushed down; In a finger pump device comprising: a stem drive lever that pushes down a stem; and a lock mechanism that fixes the stem drive lever in a position where the pump stem is not pushed down.
The locking mechanism is
A switching member assembled to the stem drive lever so as to be movable between a lock position and an unlock position set on the stem drive lever;
A stopper projection that protrudes on the main body of the apparatus so that the switching member abuts when the switching member is in the locked position, and restricts the rotation of the stem drive lever by the abutment with the switching member; And a finger pump device.

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