JP7020964B2 - Dispenser for mounting the container - Google Patents

Description

The present invention relates to a dispenser for mounting on a container body, and more specifically, a dispenser with a packing applied to a mounting location on the container body.

As this type of dispenser, a mounting member having an inward flange projecting from the upper part of a mounting cylinder for mounting the container body to the mouth and neck, and a ring plate-shaped mounted on the lower surface side of the inward flange. The packing, the cylinder suspended from the inside of the inward flange, and the lower half of the cylinder that is urged upward and can be raised and lowered, and the lower half of the cylinder is ejected to the upper half of the cylinder. It is known that an actuating member provided with an outlet is provided so that the liquid in the container is sucked into the cylinder and discharged from the discharge port by raising and lowering the actuating member with respect to the cylinder (Patent Document 1).

JP-A-2014-148318

In the dispenser of Patent Document 1, the cylinder is inserted into the hole of the packing from the lower end side thereof in the assembling work, and the packing is moved to the inward flange side along the peripheral surface of the cylinder.
However, if the packing is tilted in the cylinder axis direction of the cylinder while the packing is being moved, a part of the inner circumference of the packing is rubbed against the surface of the cylinder. Depending on the material of the packing (for example, rubber), the packing may be twisted due to poor slippage to the cylinder. Such kinks can cause damage to the packing and improper setting.
In particular, due to design reasons, the cylinder may be configured to increase its diameter from the lower side to the upper side via a step, and the packing may get caught in this step and the degree of twist may increase. There is.

An object of the present invention is to provide a container mounting dispenser capable of reducing damage to the packing and defective setting due to contact with the cylinder when the packing is mounted at the mounting location on the container.

The first means is a mounting member 2 having an inward flange 6 protruding from the upper part of the mounting cylinder portion 4 for mounting the container body on the mouth and neck.
The packing 10 mounted on the lower surface 6a side of the inward flange 6 and
A cylinder 20 suspended from the inside of the inward flange 6 and
An actuating member 30 having a lower half portion inserted into the cylinder 20 in an upwardly urged state and able to move up and down, and a discharge port 32 provided in the upper half portion protruding upward from the cylinder 20.
The dispenser is provided so as to suck the liquid in the container into the cylinder 20 and discharge it from the discharge port 32 by raising and lowering the operating member 30 with respect to the cylinder 20.
The packing 10 has a ring plate 12 that opens a cylinder insertion hole 14 at the center thereof.
A chamfered portion 16 for defining a tapered annular inclined surface 18 is provided around the inner peripheral surface 12c of the cylinder insertion hole 14 and the front surface 12a or the back surface 12b of the ring plate 12 .
At least one annular step portion 22 is provided around the cylinder 20.
The chamfered portion 16 is a chamfered portion in which the contour of the annular inclined surface 18 seen on the cross section passing through the center of the ring plate 12 is linear, and the height h in the thickness direction and the width in the radial direction of the ring plate 12 are formed. It was formed so that w was constant over the entire circumferential direction .

This means proposes the configuration of the packing 10 mounted on the back surface of the inward flange 6 of the mounting member 2.
The packing 10 has a ring plate 12 that opens a cylinder insertion hole 14 in the central portion, and has a tapered shape between the inner peripheral surface 12c of the cylinder insertion hole 14 and the front surface 12a or the back surface 12b of the ring plate 12. A chamfered portion 16 is provided around the annular inclined surface 18 of the above.
With this configuration, in the step of moving the packing 10 toward the inward flange 6 along the peripheral surface 21 of the cylinder 20 with the cylinder 20 inserted through the cylinder insertion hole 14, the packing 10 has the cylinder diameter of the cylinder 20. Even if it is tilted with respect to the direction (horizontal direction), by providing the chamfered portion 16, it is possible to alleviate the rubbing of the packing 10 on the peripheral surface 21 of the cylinder 20 on the inner peripheral side.
In particular, even if the annular step portion 22 is provided on the peripheral surface 21 of the cylinder 20, the annular step portion 22 can be easily overcome by the chamfered portion 16.

A "dispenser" is a device that dispenses a liquid, including a spray, pump, or trigger type.
The "packing" has a ring plate 12 that opens a cylinder insertion hole 14 in the central portion, and this ring plate can be sandwiched as a sealing material between the inward flange 6 of the mounting member and the mouth neck 102 of the container body. Say something configured like this.
The "packing mounted on the lower surface side of the inward flange" is a configuration in which the flange portion 23 attached to the upper part of the cylinder 20 is arranged on the lower surface 6a of the inward flange 6 as shown in FIG. It shall include packing attached to the lower surface of the flange portion 23.
The "chamfered part" is a part where a chamfer is made by removing the corners of the material .

Further , in this means, the chamfered portion 16 is formed into a flat surface in which the contour of the annular inclined surface 18 seen on the cross section passing through the center of the ring plate 12 is linear. The height h in the thickness direction and the width w in the radial direction of the ring plate 12 of the planing portion 16 are constant over the entire circumferential direction. According to this configuration, no matter where the chamfered portion 16 collides with the annular stepped portion 22 on the straight line contour seen on the cross section, and where in the circumferential direction the chamfered portion 16 collides with the annular stepped portion 22, the same applies. The annular step portion 22 can be easily overcome, and the guidance function can be uniformly exerted.

The second means has the first means and
At least when the ring plate 12 slides on the peripheral surface 21 of the cylinder 20 in a state of being inclined with respect to the cylinder diameter direction of the cylinder 20 and gets over the annular step portion 22, the chamfered portion 16 is attached to the annular step portion 22. The width w of the chamfered portion 16 is designed so as to hit.

In this means, when the ring plate 12 is slidably contacted with the peripheral surface 21 of the cylinder 20 in a state of being inclined at least in the cylinder radial direction (horizontal direction in FIG. 1) of the cylinder 20 to get over the annular step portion 22. The width w of the chamfered portion 16 is designed so that the chamfered portion 16 hits the annular step portion 22.
"The chamfered portion 16 hits the annular step portion 22" means that the annular inclined surface 18 of the chamfered portion 16 hits.

The third means has a first means or a second means , and the packing 10 is formed as one ring plate 12.
The chamfered portion 16 is formed between the front surface 12a of the ring plate 12 and the inner peripheral surface 12c of the cylinder insertion hole 14, and between the back surface 12b of the ring plate 12 and the inner peripheral surface 12c, respectively.

In this means, the chamfered portion 16 is provided on both the front and back sides of the packing 10, that is, between the surface of the ring-shaped plate of the packing 10 and the inner peripheral surface 12c of the cylinder insertion hole 14, and the back surface of the ring-shaped plate and the cylinder insertion hole. It is proposed to form each of the 14 inner peripheral surfaces 12c. As a result, the above-mentioned guide function can be fully exhibited regardless of which side of the packing 10 is facing the inward flange 6 and the packing 10 is assembled.

According to the invention according to the first means, the packing 10 has a tapered annular inclined surface 18 between the inner peripheral surface 12c of the cylinder insertion hole 14 of the ring plate 12 and the front surface 12a or the back surface 12b of the ring plate 12. Since the chamfering portion 16 for defining the above is provided around the cylinder 20, when the packing 10 is moved to the inward flange 6 along the peripheral surface 21 of the cylinder 20, a part of the inner circumference of the ring plate 12 is the circumference of the cylinder 20. The inconvenience of being caught on the surface 21 can be reduced, and the packing 10 can be smoothly guided along the peripheral surface 21 of the cylinder 20.
Further , according to the invention according to the first means, the chamfered portion 16 is formed as a chamfer in which the contour of the annular inclined surface 18 seen on the cross section passing through the center of the ring plate 12 is linear. Since the height h in the thickness direction and the width w in the radial direction of the 12 are constant over the entire circumferential direction, the function of guiding the ring plate 12 to pass over the annular step portion 22 and head toward the inward flange 6 side. It can be exerted uniformly.
According to the invention according to the second means, the ring plate 12 is inclined with respect to the cylinder diameter direction of the cylinder 20 at least, and the annular step portion 22 is slidably contacting the peripheral surface 21 of the cylinder 20. Since the radial width w of the chamfered portion 16 is set so that the chamfered portion 16 abuts on the annular stepped portion 22 when overcoming the formed portion of the above, the chamfered portion 16 is set even when the ring plate 12 is in the inclined state. Can surely demonstrate the guidance function by.
According to the invention according to the third means, the chamfered portion 16 is located between the surface 12a of the ring plate 12 and the inner peripheral surface 12c of the cylinder insertion hole 14, and the back surface 12b of the ring plate 12 and the inner peripheral surface 12c. Since it was formed between the ring plate 12 and the back surface 12a, the guide function can be exhibited regardless of whether the front surface 12a or the back surface 12b of the ring plate 12 is directed toward the inward flange 6 and the packing 10 is placed along the circumference of the cylinder 20. It's convenient.

It is a partial notch side view of the dispenser which concerns on embodiment of this invention. It is a vertical sectional view of the main member (packing) of the dispenser of FIG. It is an assembly process explanatory drawing of the dispenser of FIG. 1 which shows the state in the middle of the work of attaching the main member of FIG. It is an enlarged view of the process shown in FIG. It is a figure explaining the action when the main member of FIG. 2 gets over a step of a cylinder in the middle of the mounting work, and FIG. The case where the angle is zero, the figure (B) shows the case where the inclination angle is small, and the figure (C) shows the case where the inclination angle is large. It is a figure which shows the modification of the dispenser of FIG. It is explanatory drawing of the packing assembly work with a conventional dispenser. It is a figure which shows the state which packing was caught in the step of the cylinder in the dispenser of FIG.

1 to 6 show a dispenser with packing according to an embodiment of the present invention. This dispenser includes a mounting member 2, a packing 10, a cylinder 20, and an operating member 30. Among these constituent members, the packing 10 can be formed of a material having a high sealing property such as rubber made of synthetic resin, and the other members can be formed of synthetic resin or metal.
The dispenser of the present embodiment is configured as a push-down type, but the structure thereof can be changed as appropriate.
For convenience of explanation, a conventionally known structure of the dispensers will be described.

The mounting member 2 has a mounting cylinder portion 4 for fitting to the mouth neck portion 102 of the container body 100, and the inward flange 6 projects from the upper end portion of the mounting cylinder portion 4. In the illustrated example, the outward flange-shaped knob portion 5 projects from the lower end portion of the mounting cylinder portion 4. Further, the upright cylinder portion 7 shown by the dotted line in FIG. 1 is erected from the inner peripheral portion of the inward flange 6, and the folded cylinder portion 8 is projected inward from the upright cylinder portion 7.

In the present embodiment, the packing 10 is formed as a ring plate 12 having a cylinder insertion hole 14 in the center, and is arranged on the lower surface 6a of the inward flange 6. The packing 10 is preferably made of a material having a high sealing property, and it is desirable that the material has elasticity such as rubber.
In the ring plate 12 in the illustrated example, the inner peripheral surface 12c is fitted to the peripheral surface 21 of the cylinder 20, and the outer peripheral surface 12d is fixed to the lower surface of the inward flange 6 on the upper inner surface of the mounting cylinder portion 4. , This structure can be changed as appropriate.
The front surface 12a and the back surface 12b of the ring plate 12 are each formed flat.

The cylinder 20 is vertically installed downward from the inside of the inward flange 6. In the illustrated example, the extension cylinder portion 28 is erected from the upper end of the cylinder wall of the cylinder 20 via the enlarged diameter portion 26, and the extension cylinder portion 28 is mounted by being sandwiched between the upright cylinder portion 7 and the folded cylinder portion 8. It is fixed to the member 2. However, instead of such a structure, as shown in FIG. 6, which is a modified example, the flange portion 23 protruding outward from the upper portion of the cylinder wall of the cylinder 20 is placed on the inward flange 6 and the mouth neck 102 together with the packing 10. It may be sandwiched between the end face and the end face.
An annular step portion 22 is provided around the cylinder wall of the cylinder 20. The cylinder 20 in the illustrated example has a small diameter lower cylinder portion 20a to a medium diameter intermediate cylinder portion 20b via a first annular step portion 22A, and an intermediate cylinder portion to a large diameter upper portion via a second annular step portion 22B. The cylinder portions 20c are each standing upright. A suction port 24 is open at the lower end of the cylinder 20. A first check valve (not shown) is formed in the lower end of the cylinder 20.

The operating member 30 has a cylindrical piston (not shown) in the lower half portion, and the tubular piston is fitted to the inner surface of the cylinder 20 so as to be able to move up and down, and the upper half portion, which is a push-down head, is attached to the mounting member. It is projected above 2. The push-down head has a discharge port 32 that opens laterally. These structures can be modified as appropriate.
A coil spring, which is an upward urging means, is interposed between the lower portion of the operating member 30 and the lower portion of the cylinder 20.
Further, a second check valve (not shown) is formed inside the operating member 30.

In the above configuration, when the operating member 30 is pushed down, the first check valve closes and the second check valve opens, and the liquid in the cylinder 20 passes through the flow path in the operating member 30 from the discharge port 32. It is discharged. When the push-down is released, the operating member 30 rises, the second check valve closes, the first check valve opens, and the liquid in the container is sucked into the cylinder 20.

In the present invention, the chamfered portion 16 is formed on the inner peripheral side of the packing 10. The chamfered portion 16 defines a tapered annular inclined surface 18 over the entire hole edge of the cylinder insertion hole 14.
In a preferred embodiment, as shown in FIG. 2, between the inner peripheral surface 12c of the ring plate 12 and the surface 12a of the ring plate 12 and between the inner peripheral surface 12c of the ring plate 12 and the back surface 12b of the ring plate 12. A chamfered portion 16 is provided around each of the two. However, only the chamfered portion 16 on the side facing the inward flange 6 exerts the function of guiding the packing 10 to the lower surface 6a of the inward flange 6 along the peripheral surface 21 of the cylinder 20.
The reason why the chamfered portions 16 are provided on both the front and back sides of the ring plate 12 is that if the chamfered portions 16 are provided only on one side of the ring plate 12, the cylinder 20 is close to the inward flange 6 when the cylinder 20 is inserted into the cylinder insertion hole 14. Since it is necessary to confirm that the chamfered portion 16 is located on the side, the purpose is to save this trouble. In the illustrated example, the chamfered portion 16 formed on the front surface 12a side of the ring plate 12 and the chamfered portion 16 formed on the back surface 12b side of the ring plate 12 have the same structure.
Unlike the illustrated example, one of the chamfered portions 16 on both the front and back sides of the ring plate 12 may be omitted. In the present specification, the "front surface" refers to the surface appearing on the upper side of FIG. 2, and the "back surface" refers to the surface appearing on the lower side of FIG.

The chamfered portion 16 defines a tapered annular inclined surface 18 that expands from the inside to the outside in the thickness direction of the ring plate 12. When the annular step portion 22 hits the annular step portion 18 and slides, it becomes easy to get over the annular step portion 22 and guide the packing 10 toward the inward flange 6 side along the peripheral surface 21 of the cylinder 20. Becomes easier.
A suitable chamfered portion 16 of the present embodiment is formed in a chamfered shape in which the contour of the annular inclined surface 18 is linear on a vertical cross section passing through the center of the ring plate 12, but the contour bulges outward in the thickness direction. It may be a round chamfered portion.
The chamfered portion 16 has a constant width w and height h in the radial direction over the entire circumference of the cylinder insertion hole 14. In the illustrated example, by setting w = h, the inclination angle of the annular inclined surface 18 with respect to the front surface 12a or the back surface 12b of the ring plate 12 is 45 degrees.
The dimensions of the chamfered portion 16 shall be designed according to the dimensions of the ring plate 12 within a range that does not impair the function of the packing 10.
As a preferred embodiment, in a ring plate having an outer diameter of 15.4 mm, an inner diameter of 8.6 mm, and a thickness of 1.5 mm, the dimension of the chamfered portion 16 can be w = h = 0.3 mm.

3 and 4 show a state in which the packing 10 of the present invention provided with the chamfered portion 16 gets over the first annular step portion 22A. This situation will be described in comparison with the comparative examples shown in FIGS. 7 and 8. The comparative example is a conventional example in which the basic structure is the same and the chamfered portion is omitted.
In the illustrated example, the inner diameter of the cylinder insertion hole 14 of the packing 10 is slightly larger than the outer diameter of the intermediate cylinder portion 20b of the cylinder 20. Therefore, if the packing 10 is in the concentric position of the cylinder 20, it can pass through the formed portion of the first annular step portion 22A without contacting (see FIG. 5 (A) described later). However, if the packing 10 is tilted with respect to the cylinder diameter direction of the cylinder 20 or the center of the packing 10 is deviated from the cylinder axis of the cylinder 20 as shown in the figure, the first annular step portion 22A comes into contact with the packing 10.
In the case of the comparative example, as shown in FIG. 7, a part C of the hole edge of the cylinder insertion hole 14 of the packing 10 is engaged with the first annular step portion 22A and is caught. If the packing 10 is forcibly pulled toward the inward flange 6 in this state, the packing 10 is greatly distorted and damaged as shown in FIG.
On the other hand, in the case of the configuration of the present invention, the chamfered portion 16 hits one position of the first annular step portion 22A as shown in FIG. In this state, when the packing 10 is pulled toward the inward flange 6, the packing 10 is displaced in the direction of the contour of the annular inclined surface 18 as shown by the white arrow in FIG. 4, so that the first annular step portion 22A is displaced. It can be easily overcome.
Although a similar effect can be obtained when the chamfered portion 16 is a round chamfer, the resistance required to get over the first annular stepped portion 22A is large depending on the position where the first annular stepped portion 22A hits the chamfered portion 16. Therefore, it can be said that the chamfered structure of the illustrated example is superior.
After the packing 10 has passed over the first annular step portion 22A, when the packing 10 is further moved toward the inward flange 6, the packing 10 then abuts on the second annular step portion 22B. At this time, since there is almost no play between the outer surface of the intermediate cylinder portion 20b of the cylinder 20 and the inner peripheral surface of the cylinder insertion hole 14, the entire circumferential direction of the chamfered portion 16 abuts on the second annular step portion 22B. In this state, the cylinder insertion hole 14 expands in diameter due to the elastic deformation of the ring plate, so that the packing 10 gets over the second annular step portion 22B and moves around the upper cylinder portion 20c of the cylinder 20, and further, the inward flange 6 Reach the lower surface 6a of.
It is preferable that the hole diameter of the cylinder insertion hole 14 is designed to be slightly smaller than the upper cylinder portion 20c so that the packing 10 elastically tightens the upper cylinder portion 20c while overcoming the second annular step portion 22B. ..

FIG. 5 is an explanatory diagram for designing the dimensions of the chamfered portion 16 in relation to the annular stepped portion 22.
FIG. 5A shows a state in which the ring plate 12 is oriented in the cylinder radial direction of the cylinder 20 in the vicinity of the formation portion of the first annular step portion 22.
FIG. 5C shows a state in which the ring plate 12 is tilted to the maximum near the formed portion of the first annular step portion 22 (sliding on both sides of the cylinder insertion hole 14 to the lower cylinder portion 20a and the intermediate cylinder portion 20b of the cylinder 20). (In contact),
FIG. 5B shows an inclined state between FIGS. 5A and 5C.
Design the width of the chamfered portion 16 so that the annular stepped portion 22 abuts on the annular inclined surface 18 of the chamfered portion 16 when the ring plate 12 is moved to the position indicated by the imaginary line in any of these three states. It's fine. In the configuration of the illustrated example, since the annular step portion 22 is in contact with the annular inclined surface 18 in FIGS. 5 (B) and 5 (C), the above-mentioned conditions are satisfied.

2 ... Mounting member 4 ... Mounting cylinder 5 ... Picking part 6 ... Inward flange 6a ... Bottom surface 7 ... Standing cylinder 8 ... Folded cylinder 10 ... Packing 12 ... Ring plate 12a ... Front surface 12b ... Back surface 12c ... Inner peripheral surface 12d ... Outer peripheral surface 14 ... Cylinder insertion hole 16 ... Chamfered portion 18 ... Circular inclined surface 20 ... Cylinder 20a ... Lower cylinder portion 20b ... Intermediate cylinder portion 20c ... Upper cylinder portion 21 ... Circumferential surface 22 ... Circular step portion 22A ... First annular step Part 22B ... Second annular step portion 23 ... Flange part 24 ... Suction port 26 ... Diameter expansion part 28 ... Extension cylinder part 30 ... Acting member 32 ... Discharge port 100 ... Container body 102 ... Mouth neck

Claims (3)

A mounting member (2) having an inward flange (6) protruding from the upper part of the mounting cylinder (4) for mounting the container body on the mouth and neck.
The packing (10) mounted on the lower surface (6a) side of the inward flange (6) and
A cylinder (20) suspended from the inside of the inward flange (6) and
An actuating member (30) in which a lower half portion is inserted into the cylinder (20) in an upwardly urged state and can be raised and lowered, and a discharge port (32) is provided in the upper half portion protruding upward from the cylinder (20). When,
In a dispenser provided so as to suck the liquid in the container into the cylinder (20) and discharge it from the discharge port (32) by raising and lowering the operating member (30) with respect to the cylinder (20).
The packing (10) has a ring plate (12) that opens a cylinder insertion hole (14) in a central portion thereof.
A chamfered portion that defines a tapered annular inclined surface (18) between the inner peripheral surface (12c) of the cylinder insertion hole (14) and the front surface (12a) or the back surface (12b) of the ring plate (12). (16) is installed around
At least one annular step portion (22) is provided around the cylinder (20).
The chamfered portion (16) is a flat surface having a linear contour of the annular inclined surface (18) seen on a cross section passing through the center of the ring plate (12), and is in the thickness direction of the ring plate (12). A container body mounting dispenser characterized in that the height (h) and the radial width (w) are formed to be constant over the entire circumferential direction . At least when the ring plate (12) is slidably contacted with the peripheral surface of the cylinder (20) in a state of being inclined with respect to the cylinder radial direction of the cylinder (20) and gets over the annular step portion (22), the annular step is reached. The dispenser for mounting a container according to claim 1 , wherein the width (w) of the chamfered portion (16) is designed so that the chamfered portion (16) hits the portion (22). The packing (10) is formed as a single ring plate (12), and is formed.
The chamfered portion (16) is provided between the front surface (12a) of the ring plate (12) and the inner peripheral surface (12c) of the cylinder insertion hole (14), the back surface (12b) of the ring plate (12), and the above. The container body mounting dispenser according to claim 1 or 2 , respectively, which is formed between the inner peripheral surface (12c) and the inner peripheral surface (12c).

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