JP3597904B2 - Plug device with pump for liquid container - Google Patents

Description

[0001]
[Industrial applications]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug device with a pump that can be applied to a liquid container containing, for example, a lotion.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a liquid container for containing a lotion or the like, there is a liquid container in which a pump device is attached to a mouth of a container body made of glass or resin. In this pump device, contents (such as lotion) can be taken out by pushing down an elevating head held up by a spring.
[0003]
By the way, in this type of liquid container, when the elevating head is erroneously pushed down or the elevating head is pushed in, for example, when the liquid container is dropped, the contents may be discharged and wasted. . In particular, when the liquid container is dropped, the pump device may fail.
Therefore, in order to solve these problems, there is an apparatus in which an outer cover that covers the entire pump device (the raised elevating head) can be externally screwed around the mouth of the container body. Of course, this outer lid is previously screwed off from the container body when the contents are taken out.
[0004]
[Problems to be solved by the invention]
Conventionally, in a liquid container to which an outer lid is attached, it is needless to say that the outer lid must be unscrewed each time it is used, and screwed after use. Therefore, it was troublesome. In addition, there is a fear that the screwed outer lid may be dropped and damaged or lost.
[0005]
The present invention has been made in view of the above circumstances, and facilitates handling by eliminating the need for unscrewing or screwing of the outer lid, and yet has the contents associated with malfunction of the pump device. It is an object of the present invention to provide a plug structure with a pump for a liquid container, which can prevent waste of the pump device and failure of the pump device.
[0006]
[Means for Solving the Problems]
In the present invention, the following technical measures have been taken to achieve the above object.
That is, the present invention provides a plug base provided at the mouth of the container body, a pump device which is held up and down with respect to the plug base, and an operation which is rotatably fitted to the plug base. have a and the cylindrical body,
The pump device has an elevating head located at an upper end portion, a discharge port is provided in the elevating head, and by pushing down the elevating head, the contents in the container body are sucked up and the contents are discharged from the discharge port. Configured to take out,
Between the operation cylinder and the pump unit and the plug base, in association with the rotational operation of the control cylinder, a pump device with lowering so as to house the lift head in the operating tube body, operating tube body lifting head is interlocking means for increasing the pumping device so as to upwardly protrude is characterized by being provided from.
[0007]
In the interlocking means, the plug base is provided with a cylindrical wall for guiding the vertical movement of the pump device, and the pump device protrudes toward the cylindrical wall of the plug base and the inner surface of the peripheral wall of the operation cylinder. A follower pin is provided, and a cam guide path for transmitting vertical movement as a synthetic component to the follower pin of the pump device by rotation of the control cylinder on the cylindrical wall of the stopper base and the peripheral wall of the control cylinder. May be provided.
[0008]
The cam guide path provided on the cylindrical wall of the stopper base has a vertical path allowing vertical movement of a driven pin of the pump device and an upper peripheral path extending in a circumferential direction above the vertical path, and the operating cylinder The cam guide path provided on the peripheral wall of the body has a push surface and a push-back surface for laterally moving the driven pin of the pump device along the upper peripheral path of the plug base when the operation cylinder is rotated. be able to.
[0009]
[Action]
The plug base is provided integrally with and fixed to the container body. The pump device is held movably up and down with respect to the plug base, and the operation cylinder is held so as to be rotatable around the plug base. Then, when the liquid container is in a normal state (when it is not used), the pump device is in a lowered state and is housed in the operation cylinder.
[0010]
In this state, when the operation cylinder is rotated with respect to the container body (plug base), the pump device is raised with the operation of the interlocking means, and the discharge port provided in the pump device is moved onto the operation cylinder. It becomes exposed. Therefore, the pump device can be operated (the liquid container can be used).
On the other hand, when the operation cylinder is rotated in the opposite direction to the above, the pump device is lowered by the reverse operation of the interlocking means. Therefore, the discharge port of the pump device is hidden below the operation cylinder. Therefore, the state is returned to a state where the pump device cannot be operated (normal state of the liquid container).
[0011]
As described above, the pump device is moved in and out by rotating the operation cylinder, and whether or not the contents can be taken out is switched.The switching state depends on whether the pump device is up or down. Seems obvious.
The structure of the interlocking means is preferably a cam structure in which a driven pin provided on the pump device is combined with a cam guide path provided on the plug base and the operating cylinder so as to engage with the driven pin. . In this cam structure, the direction of the rotational power by the operating cylinder is vertically converted into a synthetic power and then taken out as vertical power to the pump device.
[0012]
In this case, the cam guide path provided on the cylindrical wall of the plug base has a vertical path allowing vertical movement of the driven pin of the pump device, and an upper peripheral path extending in a circumferential direction above the vertical path. I do. On the other hand, the cam guide path provided on the peripheral wall of the operation cylinder has a push surface and a push-back surface for laterally moving the driven pin of the pump device engaged with the upper peripheral path of the plug base when the operation cylinder is rotated. Shall have.
[0013]
That is, in the normal state of the liquid container described above, the driven pin of the pump device is located at the lower end of the vertical path of the cam guide path of the stopper base. When the operating cylinder is rotated from this state, the pushing surface of the cam guide path provided in the operating cylinder pushes the driven pin in the horizontal direction, so that the driven pin is restrained from lateral movement by the vertical path. As a result, it rises as a result, and is eventually driven from the vertical route to the upper peripheral route. In this way, the pump device is raised.
[0014]
Further, if the operation cylinder is rotated in the opposite direction from the above in a state where the pump device is raised, the driven pin whose pushing surface is engaged with the upper peripheral path is pushed back toward the vertical path, and this vertical path is returned. Will be driven out. Then, the driven pin continuously descends under the cam action of the pushing surface, and is driven into the lower end of the vertical path. The pump device is lowered in this way.
[0015]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 3 show the overall structure of a plug device 1 according to a first embodiment of the present invention. The plug device 1 has a plug base 2 and a plug base 2 as shown in FIG. The pump device 3 includes a pump device 3 that is vertically movable with respect to the plug base 2, and an operation cylinder 4 that is externally fitted and held so as to be rotatable around the plug base 2.
[0016]
The plug device 1 is integrally attached to the mouth 5a of the container body 5 by the plug base 2 (by screw connection, undercut structure, adhesion or the like), and in this case, the liquid container 6 is constituted as a whole. Things.
The pump device 3 has a pump body 7 and an elevating head 8 attached to an upper end of a piston rod 7a provided in the pump body 7. By pushing down, the contents stored in the container main body 5 can be sucked up through the lower suction pipe 7b of the pump main body 7 and taken out from the discharge port 3a provided on the upper outer peripheral portion of the elevating head 8. It has become.
[0017]
FIG. 1A shows a normal state (when not in use) of the liquid container 6, wherein the pump device 3 is in a lowered state, and most of the liquid container 6 except for the upper surface of the elevating head 8 is housed in the operating cylinder 4. Has become. FIG. 1B shows a usable state of the liquid container 6, in which the pump device 3 is in an ascending state in which the elevating head 8 protrudes from the operating cylinder 4, and the discharge port 3a is exposed. I have.
[0018]
The above-mentioned vertical movement of the pump device 3 can be performed by rotating the operation cylinder 4, and therefore, between the pump device 3, the plug base 2, and the operation cylinder 4, An interlocking means 10 as shown is configured.
First, in the pump device 3, a socket 11 is externally fixed to the pump body 7. The upper portion of the socket 11 is enlarged in diameter around the piston rod 7a, and the enlarged portion serves as a guide wall 12 capable of guiding and holding the vertical movement of the elevating head 8. Reference numeral 13 shown in FIG. 3 is a concave / convex engaging portion used to stop the lifting head 8 from rotating, and reference numeral 13a shown in FIG.
[0019]
A pair (two) of driven pins 14 are provided on a lower outer peripheral surface of the guide wall 12 so as to protrude in opposite radially outward directions.
In the plug base 2, a cylindrical wall 17 is provided on an upper part of a disk-shaped mounting boss 16 used for mounting the container body 5 to the mouth 5a. The cylindrical wall 17 is formed so that the guide wall 12 of the pump device 3 can be fitted inside, and guides the vertical movement of the pump device 3. A pair of cam guide paths 20 into which the driven pins 14 of the pump device 3 are fitted are formed in the cylindrical wall 17. These cam guide paths 20 are crank-shaped notches formed so as to penetrate the cylindrical wall 17 and escape upward.
[0020]
The mounting boss 16 is a ring having a U-shaped cross section, and a fitting rail 22 is formed on the outer peripheral surface thereof.
Further, in the operation cylinder 4, an inner peripheral wall 23 that is rotatably fitted to the cylindrical wall 17 of the plug base 2 in a rotatable state, and an upper peripheral flange 24 is provided on the inner peripheral wall 23. And an outer peripheral wall 25 provided so as to surround the inner peripheral wall 23. The inner peripheral wall 23 is formed with a pair of cam guide paths 27 that can be engaged with the driven pin 14 of the pump device 3. These cam guide paths 27 are formed on the inner peripheral surface of the inner peripheral wall 23 so as to exhibit grooves (recesses) inclined along the circumferential axis over approximately half the circumference.
[0021]
A peripheral groove 30 that can be fitted to the fitting rail 22 provided on the mounting boss 16 of the plug base 2 is formed in the lower inner peripheral surface of the inner peripheral wall 23.
The interlocking means 10 is configured by fitting the pump device 3 inside the cylindrical wall 17 of the plug base 2 and fitting the operation cylindrical body 4 outside to the cylindrical wall 17 of the plug base 2 as shown in FIGS. 3 and 4. In this case, the driven pin 14 of the pump device 3 is penetrated through the cam guide path 20 of the plug base 2, and the protruding end of the driven pin 14 is engaged with the cam guide path 27 of the operation cylinder 4.
[0022]
In this embodiment, the discharge port 3a and the driven pin 14 in the pump device 3 have an opening positional relationship of 90 ° in a plane direction as shown in FIGS. However, in FIG. 3, for convenience of explanation, the discharge port 3a and the driven pin 14 are drawn so as to appear on the same plane.
FIGS. 5A and 5B are operation explanatory diagrams showing the state in which the driven pin 14 is engaged with the cam guide paths 20 and 27 in a plain view (the hatched hatched lines indicate the state). , Not a cross section, but to clarify the outline of each member).
[0023]
As described above, the cam guide path 20 of the plug base 2 is a crank-shaped notch, and includes a vertical path 37, a lower peripheral path 38 extending in a circumferential direction below the vertical path 37, and a lower peripheral path 38 above the vertical path 37. And an upper circumferential path 39 extending in the circumferential direction on the opposite side.
The direction in which the lower peripheral path 38 extends with respect to the vertical path 37 is on the left side in each of FIGS. 5A and 5B, and the upper peripheral path 39 is on the right side in FIG. This is because, in the lower peripheral path 38, the rotation direction when the operation cylinder 4 is first rotated (to switch from the normal state of the liquid container 6 to the usable state) with respect to the stopper base 2 (see FIGS. The direction is opposite to that of the arrow X in FIG. 5A, and the upper circumferential path 39 is related to the above-described rotation direction (see the arrow X).
[0024]
The lower peripheral path 38 has a projection 38a formed near the bent corner with the vertical path 37, and the upper peripheral path 39 has a projection 39a formed near the bent corner with the vertical path 37. Is formed. Each of these projections 38a and 39a is for retaining to keep the driven pin 14 engaged with the lower peripheral path 38 or the upper peripheral path 39.
[0025]
On the other hand, as described above, the cam guide path 27 of the operating cylinder 4 is a groove inclined with respect to the circumferential axis, the lower step surface inside the groove is the pressing surface 40, and the upper step surface is the pressing surface. A return surface 41 is provided. In a predetermined region on the upper side of the pushback surface 41, the driven pin 14 of the pump device 3 acts as an upper contact surface 42. In the cam guide path 27, the inclination direction is such that the left side of each figure in FIG. 5 is upward and the right side is downward. This is the first operation of rotating the operation cylinder 4 with respect to the plug base 2. The relationship is established so that the engagement position with the driven pin 14 can be gradually increased along the rotation direction (see arrow X) in the case.
[0026]
In the interlocking means 10 having such a configuration, it is assumed that the operation cylinder 4 is rotated in the arrow X direction from the normal state (non-use state) of the liquid container 6 shown in FIGS. Along with this, as shown in FIG. 5A, the cam guide path 27 of the operating cylinder 4 pushes the driven pin 14 of the pump device 3 in the lateral direction by the pushing surface 40. Therefore, the driven pin 14 engaged with the lower circumferential path 38 of the plug base 2 initially starts to move laterally with respect to the cam guide path 20 of the plug base 2, gets over the retaining projection 38 a and is ejected to the vertical path 37. Will be able to At this time, the pump device 3 itself naturally rotates together with the operation cylinder 4 (see FIG. 4).
[0027]
If the rotation of the operation cylinder 4 is continued, the driven pin 14 is continuously pushed laterally by the pressing surface 40, and the driven pin 14 moves up in the vertical path 37. Then, at the time when the height reaches the height corresponding to the upper peripheral path 39, the vehicle gets over the retaining projection 39 a and is driven into the upper peripheral path 39. Thus, the ascending movement as a combined component of the cam guide paths 20 and 27 is transmitted to the driven pin 14, and the pump device 3 exposes the discharge port 3a as shown in FIGS. 1B and 6. It goes up. Of course, in this state, the driven pin 14 is restrained from moving up and down by the upper peripheral path 39, so that the pump device 3 is also held in a state where the vertical movement (particularly, the downward movement) is prevented.
[0028]
On the other hand, when the operating cylinder 4 is rotated in the opposite direction from this state, the pushing back surface 41 of the cam guide path 27 causes the driven pin 14 to move the driven pin 14 in the opposite lateral direction as shown in FIG. As a result, the vehicle moves from the upper peripheral path 39 to the lower peripheral path 38 via the vertical path 37. As described above, the descending movement as the combined component of the cam guide paths 20 and 27 is transmitted to the driven pin 14, and the pump device 3 returns to the storage state shown in FIG. Of course, even in this state, the driven pin 14 is restrained by the lower peripheral path 38 so as not to be able to move up and down, so that the pump device 3 is also held in a state where the up-and-down movement (especially ascent) is prevented.
[0029]
By the way, in order to prevent the driven pin 14 from falling out of the cam guide path 20 (upper peripheral path 39) when it is raised, the operation amount of the operation cylinder 4 is restricted within a predetermined range. Structure. That is, as shown in FIG. 5B, a state in which the upper outlet of the upper peripheral path 39 is closed by a part of the pushback surface 41 (the above-mentioned upper contact surface 42) in the cam guide path 27 is maintained. It has become.
[0030]
As shown in FIG. 7, the rotation amount restricting structure is provided with a stopper piece 45 which is vertically attached to the operation cylinder 4 in a state of circumscribing the inner peripheral wall 23 thereof, and is provided at a predetermined position when the operation cylinder 4 rotates. An abutment piece 46 projecting radially outward from the mounting boss 16 of the plug base 2 so as to interfere with the stopper piece 45 (see FIG. 4). Reference numeral 47 denotes an engagement projection for holding the stopper piece 45 in contact with the abutting piece 46 (that is, the state in which the liquid container 6 can be used). The engagement projection 47 applies a high operation force during the rotation operation of the operation cylinder body 4, thereby causing the stopper piece 45 to bend in the up-down direction and thereby to get over the stopper piece 45. .
[0031]
In the present embodiment, the stopper base 2 is attached to the standby position of the operation cylinder 4 when the liquid container 6 is in a normal state (non-use state) so that the stopper base 2 is mechanically restricted. Another abutment piece 48 and an engagement projection 49 are provided at a position about 180 ° away from the abutment piece 46 with respect to the boss portion 16.
As the pump device 3, for example, one having a structure as shown in FIG. 8 can be used. The piston rod 7a is hollow and communicates with the discharge port 3a of the elevating head 8, and a lower portion thereof presses and holds the spring 50 between the piston rod 7a and the inner bottom of the pump body 7 as shown in FIG. The spring pressing tool 51 is integrally connected. A plunger 54 is held around the spring pressing tool 51 so as to be vertically movable.
[0032]
Upper and lower water holes 55 and 56 for communicating the inside of the piston rod 7 a and the inside of the pump body 7 are formed in the spring pressing tool 51, and the plunger 54 moves up and down with respect to the spring pressing tool 51. The upper and lower water holes 55 and 56 are made to communicate with each other (see FIG. 8A) or cut off (see FIG. 8B). In the pump body 7, reference numeral 57 denotes an air vent hole for facilitating the vertical movement of the plunger 54, and reference numeral 58 denotes a check valve for preventing backflow of the contents.
[0033]
In the pump device 3 having such a configuration, when the lifting head 8 is pressed down, the plunger 54 is lowered via the piston rod 7a to increase the internal pressure of the container body 5 as shown in FIG. The contents in the container body 5 are pushed up, reach the inside of the piston rod 7a from the lower water passage 56 through the upper water passage 55, and are discharged from the discharge port 3a. When the lifting operation of the lifting head 8 is released, the lifting head 8 is returned by the spring 50 as shown in FIG. When the lift head 8 is lifted, the plunger 54 blocks the upper and lower water holes 55 and 56 as described above. Therefore, the provisional command and the liquid container 6 are turned over or upside down. Even then, the contents in the container body 5 do not spill.
[0034]
FIG. 9 shows a second embodiment of the plug device 1 according to the present invention. In the second embodiment, the first embodiment is different from the first embodiment in that the operation cylindrical body 4 has a single-wall structure on a peripheral wall 23 thereof. This is different from the embodiment (the first embodiment has a double wall structure of the inner peripheral wall 23 and the outer peripheral wall 25 as shown in FIG. 3). Since other configurations, detailed structures, and operations are substantially the same as those of the first embodiment, those having the same operations are denoted by the same reference numerals and their detailed description is omitted.
[0035]
The present invention is not limited to the embodiments described above, and various more detailed improvements and changes can be made.
For example, in the interlocking means 10, by changing the lead angles of the cam guide paths 20 and 27 provided in the stopper base 2 and the operation cylinder 4, the rotational operation amount of the operation cylinder 4, the operation torque, and the pump device 3 The lifting stroke and the like can be variously changed.
[0036]
Further, in the interlocking means 10, the combination of the driven pin 14 and the cam guide paths 20, 27 may be only one set, or may be three or more sets.
The presence or absence of a structure for limiting the amount of rotation operation of the operation cylinder 4 or the structure itself can be appropriately changed. Also, the configuration itself of the pump device 3 can be replaced with various conventionally known structures.
[0037]
When the container body 5 is made of resin or the like, the plug base 2 may be formed integrally with the mouth 5a of the container body 5.
The liquid stored in the container body 5 is not limited at all.
[0038]
【The invention's effect】
The present invention includes the above-described configuration, wherein the stopper base is provided integrally with the container body, the pump device is held movably up and down with respect to the stopper base, and an operation cylinder is provided. The body is held so as to be rotatable around the plug base. In a normal state (non-use state) of the liquid container, the pump device is in a lowered state and is housed in the operation cylinder. When the operation cylinder is rotated in this state, the pump device is operated in conjunction with the operation of the interlocking means. As a result, the discharge port provided in the pump device is exposed on the operation cylinder. Therefore, the operation of the pump device is possible, and the liquid container is in a usable state. On the other hand, when the operation cylinder is rotated in the opposite direction to the above, the pump device is lowered by the reverse operation of the interlocking means, and the discharge port of the pump device is again hidden below the operation cylinder. Therefore, the pump device cannot be operated, and the liquid container is returned to the normal state (non-use state).
[0039]
As described above, unlike the related art, it is not necessary to unscrew the outer lid each time the liquid container is used and screw it in after use, so that the handling becomes extremely easy. Of course, there are no disadvantages such as dropping the screwed outer lid to cause damage or loss.
As described above, the pump device is moved in and out by rotating the operation cylinder, and whether or not the contents can be taken out is switched.The switching state depends on whether the pump device is up or down. Seems obvious. Therefore, there is no possibility of operating the pump device by mistake, and waste of the contents can be avoided. Further, malfunction of the pump device can be prevented even when the liquid container is dropped. In particular, regarding the fact that the pump device is not malfunctioned when the liquid container falls as described above, it is extremely advantageous in that the failure of the pump device is prevented.
[0040]
The structure of the interlocking means is preferably a cam structure in which a driven pin provided on the pump device is combined with a cam guide path provided on the plug base and the operating cylinder so as to engage with the driven pin. . This cam structure is configured so that the direction of the rotational power by the operating cylinder is vertically converted and then taken out as vertical power to the pump device, and has the advantage of being structurally simple and having excellent conversion efficiency. Have. Therefore, the manufacturing cost can be reduced, the operation can be reliably performed, and the life can be extended.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a use state of a plug device according to a first embodiment of the present invention, wherein (a) is a normal state (when not in use) and (b) is a usable state. is there.
FIG. 2 is an exploded perspective view showing the plug device of the first embodiment in an exploded state and crushing each necessary portion.
FIG. 3 is a side sectional view when the plug device of the first embodiment is in a normal state (when not in use) (the cutting position is combined so that a discharge port appears).
FIG. 4 is a half-plane sectional view showing the plug device of the first embodiment.
5A and 5B are explanatory views of the operation of the interlocking means provided in the plug device of the first embodiment, wherein FIG. 5A is a normal state (when not in use) and FIG. 5B is a usable state.
6 is a half sectional view showing a state in which the plug device is made usable from the state shown in FIG. 3;
FIGS. 7A and 7B show a structure for restricting a rotation operation amount of the operation cylinder, and FIG. 7A is an exploded perspective view in which a part is crushed, and FIG. 7B is a plan sectional view of the operation cylinder. (C) is a plan sectional view of the plug base.
FIGS. 8A and 8B are half sectional views showing an example of the pump device, wherein FIG. 8A shows a state before operation and FIG. 8B shows an operation state.
FIG. 9 is a half sectional side view showing the plug device of the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Faucet device 2 Faucet base 3 Pump device 3a Discharge port 4 Operation cylinder 5 Container main body 5a Mouth 6 Liquid container 10 Interlocking means 14 Follower pin 17 Cylindrical wall 20 Cam guide path 23 Peripheral wall (inner peripheral wall)
27 Cam guide path 37 Vertical path 38 Lower peripheral path 40 Push surface 41 Push back surface 42 Upper contact surface

Claims (3)

A plug base (2) provided at the mouth (5a) of the container body (5), a pump device (3) held up and down with respect to the plug base (2), and the plug base (2) rotatably fitted on the operating cylinder and (4) possess against,
The pump device (3) has an elevating head (8) located at the upper end, a discharge port (3a) is provided in the elevating head (8), and a container is operated by pushing down the elevating head (8). It is configured to suck up the contents in the main body (5) and take out the contents from the discharge port (3a),
The lifting head (8) is moved between the pump device (3), the plug base (2), and the operation cylinder (4) with the rotation operation of the operation cylinder (4). There is provided an interlocking means (10) for lowering the pump device (3) so as to be housed therein, and for raising the pump device (3) so that the elevating head (8) protrudes upward from the operating cylinder (4). A plug device with a pump for a liquid container, comprising: In the interlocking means (10), the plug base (2) is provided with a cylindrical wall (17) for guiding the vertical movement of the pump device (3), and the pump device (3) is provided with a plug base (2). ) And a driven pin (14) protruding toward the inner surface of the peripheral wall (23) of the operation cylinder (4), and the cylindrical wall (17) of the plug base (2) is provided. ) And a cam guide for transmitting vertical movement as a synthetic component to a driven pin (14) of the pump device (3) by rotation of the operation cylinder (4) on a peripheral wall (23) of the operation cylinder (4). 2. The plug device with a pump for a liquid container according to claim 1, wherein the passages (20, 27) are provided. A cam guide path (20) provided on the cylindrical wall (17) of the plug base (2) includes a vertical path (37) allowing vertical movement of the driven pin (14) of the pump device (3) and the vertical path (37). And a cam guide path (27) provided on a peripheral wall (23) of the operation cylinder (4), the cam guide path (27) being provided on the operation cylinder (4). ) Has a pushing surface (40) and a pushing surface (41) for laterally moving the driven pin (14) of the pump device (3) along the upper peripheral path (39) of the plug base (2). The plug device with a pump for a liquid container according to claim 2, wherein the plug device is provided.

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