JP3609253B2 - Spring hinge cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap attached to a discharge port of a container.
[0002]
[Prior art]
As shown in FIG. 10, a cap 54 fitted to the discharge port 52 of the container 50 filled with a liquid such as shampoo or rinse is provided with a lid 60 connected in series by a main body 56 and a hinge portion 58.
[0003]
The hinge portion 58 is thin and can be bent easily. However, the hinge portion 58 breaks beyond the fatigue limit while the lid 60 is opened and closed many times, and the lid 60 is separated from the main body 56. Problems such as being lost.
[0004]
For this reason, as shown in FIGS. 11 to 14, there are some in which an elastic member 64 is provided in addition to the hinge portion 62 so that the load applied to the hinge portion 62 is within the fatigue limit with a constant opening / closing stroke. Using the biasing force of the elastic member 64, the lid 66 is automatically rotated in the closing direction or the opening direction according to the opening / closing angle of the lid 66.
[0005]
The spring hinge cap 68 improves the appearance so that the elastic member 64 is hidden by the hinge portion 62 when the lid 66 is closed.
[0006]
However, in the molding method in which the elastic member 64 is connected to the lid 66 and the main body 70, the molded product is not released even if a mold structure in which a frame between the hinge portion 62 and the elastic member 64 is slid is used.
[0007]
For this reason, as shown in FIG. 12, after the elastic member 64 is formed on the lid 66 side and the spring hinge cap 68 is die-cut, as shown in FIG. 13 and FIG. The claw portions 64A of the member 64 are connected, but an extra assembly cost is required, resulting in an increase in cost.
[0008]
[Problems to be solved by the invention]
In view of the above facts, an object of the present invention is to provide a spring hinge cap that has a good appearance, can reduce the manufacturing cost, and does not apply a load to the hinge portion.
[0009]
[Means for Solving the Problems]
In the first aspect of the present invention, the main body attached to the discharge port of the container is provided with an opening for discharging the contents. This opening is opened and closed by a lid that is connected to the main body so as to be rotatable by a hinge portion. A rib is formed on the main body, and an elastic member erected from the back surface of the lid is positioned between the hinge portion and the rib in the process of closing the lid. This elastic member is covered by the hinge when the lid is closed, and when the lid is opened and closed, the curved distal end of the elastic member is deformed by sliding the rib, and the lid is changed according to the opening and closing angle of the lid. Is biased in the closing direction or the opening direction.
[0010]
As described above, the spring effect of the elastic member is exhibited when the lid is opened and closed without connecting the elastic member to the main body, and the lid can be opened and closed with a slight force. Moreover, it is not necessary to open and close the lid by applying force, and the lid opens and closes within the lid opening / closing stroke by the biasing force of the elastic member.
[0011]
For this reason, the force which acts on a hinge part becomes in a fatigue limit, and a hinge part becomes difficult to fracture | rupture. Moreover, since the elastic member slides on the rib when the lid is opened and closed, the lid does not wobble. Furthermore, since the elastic member does not connect the lid and the main body, the mold can be released simultaneously with the mold opening. Moreover, since the trouble of connecting the elastic member to the main body can be saved as in the prior art, the manufacturing cost is reduced.
[0012]
Moreover, in this invention, the groove part is formed in the elastic member. Further, an engaging portion is provided on the movement locus of the elastic member, and engages with the groove portion in the process of closing the lid.
[0013]
For this reason, when the main body is closed, the engaging portion and the groove portion are engaged, and when the lid is opened next, the opening angle of the lid is limited, so that the hinge portion is not easily damaged. Further, since the engaging portion traces the groove when the lid is opened and closed, the backlash when opening and closing is small.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
A spring hinge cap according to this embodiment will be described.
[0015]
As shown in FIGS. 1 to 4, the spring hinge cap 10 is composed of a cylindrical main body 12 and a cylindrical lid 14 fitted to the top surface portion 28 of the main body 12.
[0016]
As shown in FIG. 3, circular ribs 16 and 18 are erected concentrically on the back surface of the main body 12, and a plurality of protrusions 20 are formed on the inner peripheral surface of the outer rib 16. . The rib 16 is positioned on the outer peripheral surface of the discharge port 13 of the container 11 (see FIG. 1), and the rib 18 is positioned on the inner peripheral surface of the discharge port 13. When the main body 12 is fitted into the discharge port 13, The protrusion 20 and the rib 18 hold the discharge port 13 so that the main body 12 cannot be easily removed from the discharge port 13. Further, since it is not a screw-in type, the number of work steps for fitting the spring hinge cap 10 into the container 11 can be reduced.
[0017]
As shown in FIG. 2, a circular opening 22 is formed inside the rib 18 (see FIG. 3) of the top surface portion 28. A frustoconical spout 23 projects from the opening 22 so that the liquid filled in the container 11 can be discharged without dripping. Furthermore, the position of the spout 23 is shifted from the center of the top surface portion 28 to the outside, so that the liquid can be discharged without fully opening the lid 14.
[0018]
A recess 27 is formed on the outer peripheral surface of the main body 12. Further, one end of a thin plate-like hinge piece 26 is connected to the lower corner of the recess 27, and the other end of the hinge piece 26 is connected to the outer edge of the lid 14. The hinge piece 26 is formed with a thin portion and bends when the lid 14 is opened and closed.
[0019]
The plate width of the hinge piece 26 is substantially the same as the opening width of the recess 27, and the back surface of the hinge piece 26 enters the recess 27 by the thickness of the plate, so that the hinge piece 26 is closed when the lid 14 is closed. 26 is flush with the outer peripheral surface of the main body 12 and looks good.
[0020]
Further, a hook-like engagement portion 30 whose free end portion is bent downward from the upper part of the back wall of the recess 27 extends outward. Below the engaging portion 30, two ribs 32 are extended from the back wall of the recess 27.
[0021]
On the other hand, on the back surface of the lid 14, an elastic member 34 is erected between the hinge piece 26 and the rib 32 in the process of closing the lid 14. As shown in FIG. 6, when the opening / closing angle θ of the lid 14 is about 90 degrees, the elastic member 34 comes into contact with the rib 32, and as the opening / closing angle θ of the lid 14 becomes smaller, the elastic member 34 becomes smaller. Is elastically deformed and the tip portion slides on the rib 32. For this reason, the lid 14 does not wobble when opening and closing.
[0022]
Further, as shown in FIG. 4, the elastic member 34 is slightly curved toward the engaging portion 30 when the lid 14 is opened. For this reason, the direction in which the elastic member 34 is elastically deformed in the process of closing the lid 14 is the engaging portion 30 side. On the other hand, the position at which the direction of the urging force of the elastic member 34 changes in the process in which the tip of the elastic member 34 slides on the rib 32 is referred to as a reverse position, and is the position shown in FIG. When the lid 14 is closed until the reverse position is passed, the lid 14 is automatically closed to the position shown in FIG. Conversely, when the lid 14 is opened, the lid 14 automatically opens to the position shown in FIG.
[0023]
As described above, even when the elastic member 34 is not connected to the main body 12, the spring effect of the elastic member 34 is exhibited when the lid 14 is opened and closed, and the lid 14 can be opened and closed with a slight force. Further, it is not necessary to open and close the lid 14 by applying force, and the lid 14 opens and closes within the opening and closing stroke of the lid 14 by the biasing force of the elastic member 34.
[0024]
For this reason, the force acting on the hinge piece 26 falls within the fatigue limit, and the hinge piece 26 is less likely to break. In addition, since the elastic member 34 does not connect the lid 14 and the main body 12, the design without the undercut portion is possible, and the mold cost can be reduced. Furthermore, since it is not necessary to slide the frame between the elastic member 34 and the hinge piece 26, the number of products required can be minimized, and the running cost in mass production can be reduced. Further, in this molding method, the mold can be released at the same time as the mold is opened, and further, the labor for connecting the elastic member 34 to the main body 12 can be saved as in the prior art, so that the manufacturing cost is reduced.
[0025]
On the other hand, the engaging portion 30 is positioned on the movement locus of the elastic member 34, and a groove portion 36 (see FIG. 2) is formed in the center of the elastic member 34 according to the width of the engaging portion 30. For this reason, the engaging part 30 and the groove part 36 are engaged simultaneously with closing the lid 14. Further, as shown in FIG. 5, in the process of closing the lid 14, the distal end portion of the elastic member 34 pushes the engaging portion 30 to be elastically deformed, and as shown in FIG. 6, the opening / closing angle θ of the lid 14 is about 90. When the angle reaches, the tip part passes through the engaging part 30, and the groove part 36 engages with the engaging part 30. Thereby, the engaging part 30 traces the groove part 36 at the time of opening and closing of the lid | cover 14, and the backlash at the time of opening and closing is made small.
[0026]
Since the engaging portion 30 is elastically deformed, the amount of deformation of the elastic member 34 is small when the engaging portion 30 is engaged with the groove portion 36, and no excessive load is applied to the elastic member 34. Moreover, since the engaging part 30 and the groove part 36 are engaging, it stops at the position shown in FIG. Therefore, since the opening / closing angle θ of the lid 14 is limited, the hinge piece 26 is hardly damaged.
[0027]
On the other hand, as shown in FIG. 8, circular ribs 38 and 40 are formed on the back surface of the lid 14. As shown in FIG. 9, when the lid 14 is completely closed, the rib 38 is inscribed in the spout 23, the rib 40 is circumscribed in the spout 23, and the lid 14 closes the opening 22.
[0028]
Further, a protrusion 23A is formed along the entire circumference at the end of the spout 23, and when the protrusion 23A is fitted into a ring-shaped groove 39 formed between the rib 38 and the rib 40. In addition, it can be confirmed that a click sound is generated and the opening 22 is completely closed.
[0029]
On the other hand, the outer peripheral wall of the lid 14 is provided with a hooking portion 42 protruding outward at a position facing the hinge piece 26, and the outer peripheral surface of the main body 12 has substantially the same width as the hooking portion 42. A recess 24 is formed as described above. For this reason, the lid | cover 14 can be easily open | released only by putting a finger | toe on the dent 24 and pushing up the hanging part 42 from the downward direction.
[0030]
One of the objects of the present invention is to prevent the hinge piece 26 from being loaded. However, depending on the person, the container 11 (see FIG. 1) with the opening / closing angle θ of the lid 14 exceeding 90 degrees. In some cases, the liquid may be discharged from (see). Therefore, even in such a case, the engagement state of the engagement portion 30 and the groove portion 36 can be easily released so that a load is not applied to the engagement portion 30 and the elastic member 34.
[0031]
Next, a method for opening and closing the lid of the spring hinge cap according to this embodiment will be described.
[0032]
First, the lid 14 is rotated in a direction in which the spring hinge cap 10 (see FIG. 4) released from the mold is closed toward the main body 12 around the hinge piece 26 until the position shown in FIG. At this time, the engaging portion 30 is pushed by the tip of the elastic member 34 and elastically deforms.
[0033]
Next, as shown in FIG. 6, when the opening / closing angle θ of the lid 14 reaches about 90 degrees, the tip of the elastic member 34 passes through the engaging portion 30 and the groove 36 (see FIG. 2) is engaged. Engage with part 30. In this state, the elastic member 34 is completely assembled into the main body 12.
[0034]
Further, when the lid 14 is rotated to reach the reverse position shown in FIG. 7, the direction of the urging force of the elastic member 34 changes. When the lid 14 is closed until the reversal position is passed, the lid 14 is automatically closed to the position shown in FIG. Thereafter, simply by pushing the lid 14 in the direction of the arrow from above, the opening 22 is completely closed as shown in FIG.
[0035]
Further, when opening the lid 14, when a finger is applied to the recess 24 shown in FIG. 9, the hanging portion 42 is pushed up from below and the lid 14 is opened to the position shown in FIG. Although it opens, since the engaging part 30 and the groove part 36 are engaging, the lid | cover 14 stops in the position shown in FIG.
[0036]
【The invention's effect】
Since the present invention is configured as described above, in the invention described in claim 1, the spring effect of the elastic member is exhibited when the lid is opened and closed without connecting the elastic member to the main body, and the lid can be opened and closed with a slight force. It becomes possible. Moreover, it is not necessary to open and close the lid by applying force, and the lid opens and closes within the lid opening / closing stroke by the biasing force of the elastic member. For this reason, the force which acts on a hinge part becomes in a fatigue limit, and a hinge part becomes difficult to fracture | rupture. Moreover, since the elastic member slides on the rib when the lid is opened and closed, the lid does not wobble. Furthermore, since the elastic member does not connect the lid and the main body, the mold can be released simultaneously with the mold opening. Moreover, since the trouble of connecting the elastic member to the main body can be saved as in the prior art, the manufacturing cost is reduced.
[0037]
Furthermore, in the present invention, when the main body is closed, the engaging portion and the groove portion are engaged, and when the lid is opened next, the opening angle of the lid is limited, so that the hinge portion is not easily damaged. Further, since the engaging portion traces the groove when the lid is opened and closed, the backlash when opening and closing is small.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a spring hinge cap and a container according to the present embodiment.
FIG. 2 is a perspective view showing a spring hinge cap according to the present embodiment.
FIG. 3 is a back view showing a spring hinge cap according to the present embodiment.
FIG. 4 is a cross-sectional view showing a state in which a spring hinge cap according to the present embodiment is opened.
FIG. 5 is a cross-sectional view showing a state in which the engaging portion according to the present embodiment is engaged with the groove portion.
FIG. 6 is a cross-sectional view showing a state in which the engaging portion according to the present embodiment is engaged with the groove portion.
FIG. 7 is a cross-sectional view showing a reverse position of an elastic member according to the present embodiment.
FIG. 8 is a cross-sectional view showing a state in which the spring hinge cap according to the present embodiment is closed.
FIG. 9 is a cross-sectional view showing a state in which the spring hinge cap according to the present embodiment is closed.
FIG. 10 is a perspective view showing a conventional spring hinge cap and container.
FIG. 11 is a perspective view showing a conventional spring hinge cap.
FIG. 12 is a cross-sectional view showing a state in which a conventional spring hinge cap is opened.
FIG. 13 is a cross-sectional view showing a state in which an elastic member of a conventional spring hinge cap is incorporated into a main body.
FIG. 14 is a cross-sectional view showing a state in which a conventional spring hinge cap is closed.
[Explanation of symbols]
30 Engaging portion 32 Rib 34 Elastic member 36 Groove portion

Claims (1)

Used for a cap composed of a main body provided with an opening attached to a discharge port of a container and for discharging contents, a lid for opening and closing the opening, and a hinge part continuously connecting the lid to the main body so as to be rotatable. ,
A rib formed on the main body and standing from the back surface of the lid. When the lid is closed in the process of closing the lid, the lid is covered and curved when the lid is closed. An elastic member that is deformed when the tip end that slides on the rib and urges the lid in the closing direction or the opening direction according to the opening and closing angle of the lid ;
A groove formed in the elastic member, and an engagement formed on the main body, located on the movement locus of the elastic member, engaged with the groove in the process of closing the lid, and limiting the opening angle of the lid And
A spring hinge cap characterized by comprising:

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