JP3235193U - Cap opening and closing aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap opening / closing assisting tool capable of easily opening / closing a screw-in type cap. SOLUTION: A cap opening / closing assisting tool 100 is an assisting tool for opening / closing a cap 20 by covering it with a cap 20 of a container 10 and rotating it. Three convex portions 22 are formed on the outer periphery of the cap 20. A concave portion 112 is formed in the engaging portion on the opening side of the cap opening / closing assisting tool 100 at a position and shape corresponding to the convex portion 22. The engaging portion is extended upward by the extending portion, and a handle portion is attached to the upper portion thereof. According to the cap opening / closing assisting tool 100, when the container 10 is covered with the concave portion 112, the concave portion 112 engages with the convex portion 22 of the cap 20 and the handle portion is rotated, so that the cap 20 can be rotated. Therefore, the cap can be opened and closed easily and efficiently. [Selection diagram] Fig. 1

Description

The present invention relates to a cap opening / closing assisting tool used to open / close a screw-in cap for closing an opening of a container.

In the breeding of small animals, water bottles are used to hydrate the small animals. The water bottle can be opened and closed by screwing a cap with a spout into the opening of the container body. If the water bottle is attached to the small animal incubator with the water in it so that the mouth is on the lower side, the small animal can drink water from the mouth. When using a water bottle, some small animals may get sick due to getting wet, so it is necessary to tighten the cap firmly so that water does not leak even if it is attached so that the spout is on the lower side. There is.

However, in actual breeding, as shown in FIG. 5, a large number of water bottles are often transported side by side in a dedicated basket, and as shown in FIG. 5A, the water bottles are supplied from the basket at the time of water supply. It was necessary to take out the baskets one by one and tighten the caps, which was complicated and labor-intensive. Further, if the cap is to be opened and closed while it is in the basket, the fingers are forced to take an unreasonable posture as shown in FIG. 5 (b). The same applies when opening the cap.

Conventionally, various techniques for facilitating the opening and closing of the lid by attaching it to the lid of the container have been introduced. For example, Patent Document 1 discloses an opener portion having an unevenness on the outer periphery of a cap such as a PET bottle and an unevenness that bites into the cap, and an opening / closing tool having a handle extending in the horizontal direction. Patent Document 2 discloses an opening / closing device having a structure in which a handle is provided in a frame in which four plate-shaped members are connected, and a cap having an arbitrary diameter can be grasped by deforming the frame portion into a rhombus.

Utility Model Registration No. 3221385 Gazette Japanese Unexamined Patent Publication No. 2003-72887

However, the prior art has not been sufficient to reduce the burden of tightening the cap of the water bottle. For example, if a conventional device is used with a large number of water bottles in a basket as shown in FIG. 5, the handle portion interferes with other water bottles, and the cap can be opened and closed. There wasn't. In addition, it was not easy to attach it to the cap, leaving room for improvement in operability. This problem is not limited to the cap of the water supply bottle, but is a common problem when opening and closing the lid of the container with a screw-in cap.

In view of the above problems, it is an object of the present invention to provide a cap opening / closing assisting tool for easily opening / closing a screw-in type cap.

The present invention is
A cap opening / closing aid used to open / close a screw-in cap for closing the opening of a container.
An engaging portion for engaging with a concave portion or a convex portion formed on the outer periphery of the cap,
An extension portion formed integrally with or separately from the engagement portion and extending the engagement portion in the direction of the rotation axis,
It can be configured as a cap opening / closing assisting tool including a handle portion provided at or near the other end of the stretched portion.

The cap opening / closing assisting tool of the present invention attaches an engaging portion to the cap and rotates the handle portion to rotate the screw-in type cap so that the cap can be opened / closed. In the prior art, the handle extends laterally including the rotation surface of the cap, whereas in the present invention, the handle portion is provided at a position separated from the rotation axis direction of the cap by the extension portion. By doing so, the handle portion, the stretched portion, and the engaging portion are aligned on the same axis, so that there is an advantage that the engaging portion can be easily engaged with the cap.
Further, since the stretched portion extends in the direction of the rotation axis of the cap, it is possible to prevent the handle portion from interfering with other containers even if a large number of containers are arranged and used as shown in FIG.
As a result, according to the present invention, it is possible to efficiently open and close the cap of the container with a light load.

In the present invention, the container is not limited to the water supply bottle, but various containers such as PET bottles can be targeted.
Since it is an auxiliary tool for rotating the cap, the shapes of the engaging portion and the extending portion are preferably axisymmetric, particularly circular.
In order to engage with the cap, it is preferable that the inner diameter of the engaging portion is the same as the outer diameter of the cap.
When a concave portion is formed in the cap, a convex portion that engages with the concave portion may be formed in the engaging portion. When a convex portion is formed on the cap, a concave portion that engages with the convex portion may be formed on the engaging portion. The engaging portion may be provided with not only one of the concave portion or the convex portion but also both.
The stretched portion may be formed integrally with the engaging portion or may be formed as a separate body. Further, it may be integrated with the handle portion or may be a separate body. The handle portion may be provided in the middle of the extending portion or may be provided at the end opposite to the engaging portion.

In the present invention
The stretched portion may be stretched so that the distance from the open end of the engaging portion to the handle portion is longer than the total length of the cap.

By doing so, when the cap opening / closing assisting tool is attached to the container with the container upright, the position of the handle portion is higher than the upper end of the cap attached to the container. As a result, even when the cap is opened and closed with a plurality of containers upright, it is possible to more reliably prevent the handle from interfering with other containers.

In the present invention
The outer diameter of the handle portion may be larger than the outer diameter of the cap.

By doing so, the cap can be easily opened and closed by applying a small torque to the handle portion.
As a method of increasing the outer diameter of the handle portion, for example, various methods such as a method of thickening the handle portion and a method of attaching a handle extending in a direction orthogonal to the stretched portion as the handle portion can be taken.

In the present invention
A convex portion is formed on the outer circumference of the cap.
It is preferable that the engaging portion has a concave portion that engages with the engaging portion.

There is an advantage that forming a concave portion is easier to process than forming a convex portion in the engaging portion.

When forming a recess in the engaging portion in the present invention,
The concave portion may be tapered so that the width on the opening end side is wider than the width of the convex portion and becomes narrower toward the back.

According to the above aspect, since the width of the opening end side is wider than the width of the convex portion on the cap side, it becomes easy to engage the engaging portion with the convex portion of the cap. Further, since it becomes narrower toward the back, it can be firmly in contact with the convex portion on the cap side at any part of the concave portion, and the cap opening / closing assisting tool can be easily fixed to the cap.
However, the concave portion of the engaging portion is not limited to the above aspect, and may be formed with a constant width substantially the same as the convex portion on the cap side, or may be formed with a constant width slightly wider than this.

When forming a recess in the engaging portion in the present invention,
The recess may be a groove that does not penetrate to the outside of the engaging portion.

The shape of the concave portion may be a slit shape that penetrates to the outside of the engaging portion, or a groove that does not penetrate the concave portion and leaves the wall of the engaging portion on the outside. In the case of a slit shape, the rigidity of the engaging portion is structurally reduced, which may hinder the opening and closing of the cap. On the other hand, in the case of a non-penetrating groove, there is an advantage that the rigidity of the engaging portion can be easily secured and the cap can be stably opened and closed.
However, it does not exclude the structure in the slit state that penetrates. Even in such an embodiment, it is possible to secure sufficient rigidity depending on the material around the slit, the thickness of the wall, and the like.

When forming a recess in the engaging portion in the present invention,
There are multiple types of caps that can be opened and closed.
The concave portions of the engaging portion may be formed in a number and positions capable of engaging with all the convex portions of the plurality of types of the caps.

By doing so, it becomes possible to open and close a plurality of types of caps. For example, when targeting a first cap having three protrusions at 120-degree intervals and a second cap having four protrusions at 90-degree intervals on the outer circumference of a circle, the concave portions of the engaging portions are It may be formed at a position that can handle both 120-degree intervals and 90-degree intervals. Further, both recesses may be used in combination as much as possible. Therefore, in the case of corresponding to the above-mentioned two types of caps, if one place is also used, it is sufficient to form a total of six recesses. The same can be considered for caps of other embodiments.

When forming a recess in the engaging portion in the present invention,
There are multiple types of caps with different outer diameters that can be opened and closed.
The engaging portion is
A plurality of inner diameter gaps corresponding to the plurality of types of caps are formed so that the inner diameter gradually decreases from the opening side to the back.
The concave portion may be formed on the inner surface of each void so as to engage with the convex portion on the outer periphery of the cap corresponding to the inner diameter thereof.

By doing so, caps of different diameters can be opened and closed. That is, the portion on the opening side having a large inner diameter can be used for opening / closing a cap having a large diameter, and the inner portion having a small inner diameter can be used for opening / closing a cap having a small diameter. The engaging portion is not limited to two stages, and may be compatible with a diameter of three or more stages.

It is explanatory drawing which shows the outline of the cap opening / closing assisting tool 100 as an Example. It is explanatory drawing which shows the structure of the cap opening / closing assisting tool 100. It is explanatory drawing which shows the structure of the recess 112. It is explanatory drawing which shows the 1st member 170 as a modification. It is explanatory drawing which shows the use example of the cap opening / closing assisting tool 100.

Hereinafter, as an example of the present invention, a cap opening / closing assisting tool for opening / closing the cap of a water bottle for small animals will be described below.

FIG. 1 is an explanatory diagram showing an outline of a cap opening / closing assisting tool 100 as an embodiment. As shown in FIG. 1A, the water bottle can be opened and closed by screwing the cap 20 into the container 10. In this embodiment, the cap 20 can be opened and closed by turning it about 90 degrees, but the angle of rotation for opening and closing is not limited to this.
A drinking spout 21 for a small animal to drink water is formed at the tip of the cap 20.
Further, as shown in FIG. 1 (c), three convex portions 22 are formed on the outer periphery of the cap 20 at intervals of 120 degrees.

As shown in FIG. 1A, the cap opening / closing assisting tool 100 as an embodiment is an assisting tool for easily opening / closing the cap by engaging with the cap 20 so as to cover it from above and rotating it.
As shown in FIG. 1 (b), three recesses 112 are formed at the open end of the cap opening / closing assisting tool 100 at intervals of 120 degrees. The concave portion 112 is formed at a position and shape that engages with the convex portion 22 of the cap 20.

When the cap opening / closing assisting tool 100 is attached to the container as shown in FIG. 1 (c), the concave portion 112 and the convex portion 22 of the cap 20 engage with each other. If the cap opening / closing assisting tool 100 is rotated in this state, the cap 20 can be rotated, and the cap 20 can be opened / closed in the container 10.

Hereinafter, the structure of the cap opening / closing assisting tool 100 will be described in detail.
FIG. 2 is an explanatory diagram showing the structure of the cap opening / closing assisting tool 100. FIG. 2B shows a bottom view. A cross section of AA passing through the center is shown in FIG. 2 (a).

As shown in FIG. 2A, the cap opening / closing assisting tool 100 has an engaging portion, an extending portion, and a handle portion from the lower side. However, as the members, the first member 110 mainly constituting the engaging portion, the second member 130 mainly constituting the extending portion, and the third member 150 mainly constituting the handle portion are joined by the joining portions J1 and J2, respectively. It is composed of. That is, the stretched portion is composed of the first member 110, the second member 130, and the third member 150.
It should be noted that the method of dividing the members is arbitrary, and various modes such as a mode in which the engaging portion, the extending portion, and the entire handle portion are integrally formed, and a mode in which each of the members is formed by one member can be taken. ..

In this embodiment, all of the first member 110, the second member 130, and the third member 150 are made of resin, and PVC pipes, joints, and the like for water pipes are diverted. By doing so, it becomes possible to form it at a low cost because it is very easy to process. The material is not limited to resin, and various materials such as metal and wood can be used. Also, there is no need to unify the entire material.
Further, in this embodiment, since a vinyl chloride pipe or the like for water pipes is diverted, the cap opening / closing assisting tool 100 has a hollow structure as a whole as shown in FIG. 2A, and can be made very lightweight. However, it does not necessarily have to have a hollow structure.

The handle portion is formed by a third member 150 made of a T-shaped branch joint for water pipes. Therefore, it has a shape having a handle extending in the horizontal direction from the engaging portion and the extending portion. Since the width of the handle is larger than the outer diameter d of the cap (see FIG. 1 (c)), sufficient opening and closing torque can be applied to the cap simply by rotating the handle with a small torque. It can be opened and closed with a light load.
The handle portion is not limited to such a shape, and for example, a pipe thicker than the outer shape d of the cap may be used, or a tape or a band may be wrapped around the outside of the pipe to partially thicken the handle portion.

The engaging portion is formed by a first member 110 using a vinyl chloride pipe for water pipes. A cylindrical gap 111 that matches the outer shape d of the cap 20 is formed inside the engaging portion. The void 111 can be easily formed by cutting the inner diameter of the vinyl chloride pipe.
In the gap 111, three concave portions 112 are formed at intervals of 120 degrees so as to engage with the convex portion 22 on the outer periphery of the cap 20. The recess 112 is formed with a substantially constant width in the vertical direction.

The planar shape and position of the recess 112 are as shown in the bottom view (FIG. 2B). In this embodiment, as shown in the figure, the recess 112 is not a slit penetrating to the outer periphery, but is formed in a groove shape with the outer wall 113 of the first member 110 left as a continuous wall on the outer periphery. ..
The cap opening / closing assisting tool 100 applies opening / closing torque to the cap 20 by engaging the concave portion 112 with the convex portion 22 of the cap 20. In order to apply this torque stably, it is preferable that the structure near the recess 112 has sufficient rigidity. In this embodiment, the thickness t of the outer wall 113 is set so as to secure such rigidity.

However, if rigidity can be ensured, the thickness may be reduced as shown in the broken line outer wall 113a in FIG. 2B, and the recess 112 may be a slit penetrating the outer wall 113a.

As shown in FIG. 2A, the extension portion is formed by a second member 130 using a vinyl chloride pipe for water pipes. In this embodiment, a pipe that becomes thinner on the upper side of the joint portion J1 is used for the convenience of joining to the third member 150, but a pipe having a certain thickness does not matter, and a pipe that becomes thicker on the upper side is used. You may.

The length of the stretched portion can be arbitrarily determined, but in this embodiment, the length from the open end of the engaging portion to the handle (the total length of the engaging portion and the stretched portion in FIG. 2A). ) Is set to be longer than the height T from the bottom surface of the cap 20 to the drinking spout 21. By doing so, when the cap opening / closing assisting tool 100 is put on the water supply bottle, the position of the handle portion can be set to a position sufficiently higher than the drinking spout 21 of the cap 20. As a result, even if a large number of water bottles are used side by side, it is possible to prevent the handle portion from interfering with other water bottles.

FIG. 2C shows a modified example of the region B of the stretched portion. In the stretched portion of the modified example, a torque regulating mechanism 160 is provided between the second member 130a of the modified example and the third member 150a of the modified example. The torque regulating mechanism 160 is a mechanism that regulates the engagement portion so that a predetermined torque T2 or more is not applied even when a large torque T1 is applied to the handle portion. For example, a ratchet mechanism can be used.
Further, as another embodiment, the diameters of the second member 130a of the modified example and the third member 150a of the modified example may be adjusted so that slippage occurs between the second member 130a and the third member 150a of the modified example when a torque T2 or more is applied. .. In this case, the joint portion itself between the second member 130a and the third member 150a of the modified example functions as the torque regulating mechanism 160.
In yet another embodiment, for example, when the cap 20 is configured to be tightened when rotated clockwise, a clock is formed at the joint between the second member 130a of the modified example and the third member 150a of the modified example. A thread groove may be formed so as to loosen when rotated in a clockwise direction. In this way, when a large torque is applied to the handle portion, the screw at the joint portion is loosened and the transmitted torque is regulated.
As yet another aspect, a small diameter portion that is damaged when a torque of a predetermined torque T2 or more is applied may be provided between the second member 130a and the third member 150a of the modified example.
Various other aspects of the torque regulation mechanism 160 can be considered. Further, the portion where the torque regulating mechanism 160 is provided may be provided at any position as long as it is between the engaging portion and the handle portion.

FIG. 3 is an explanatory diagram showing the structure of the recess 112. FIG. 3A shows the recess 112 of this embodiment. As shown in the figure, the width w of the concave portion 112 is equivalent to the width wd of the convex portion 22 of the cap 20, and has a constant width in the vertical direction. Therefore, it can be firmly engaged with the convex portion 22 of the cap 20. However, in this aspect, there is a demerit that it is difficult to engage with the convex portion 22.

FIG. 3B shows a recess 112b as a modified example. In the modified example, the width wb of the concave portion 112b is slightly wider than the width wd of the convex portion 22, and has a constant width in the vertical direction. It is a width with so-called play. By doing so, the demerit that it is difficult to engage with the convex portion 22 can be eliminated. However, if the play is increased, so-called backlash may occur at the time of engagement, and it is preferable to set the width wd from this viewpoint as well.

FIG. 3C shows the recess 112c as yet another modification. In the modified example, the width wc1 on the opening surface side of the concave portion 112c is larger than the width wd of the convex portion 22, and the upper width wc2 is smaller than the width wd of the convex portion 22. That is, the recess 112c is tapered so that the width becomes narrower from the opening toward the top. By doing so, since the width wc1 on the opening surface side is wide, it is easy to engage with the convex portion 22, and since there is a portion where the concave portion 112c is firmly in contact with the convex portion 22, the convex portion 22 is stable. It is also possible to engage.

As described above, various aspects can be considered for the shape of the recess 112. Either aspect may be taken.

FIG. 4 is an explanatory diagram showing a first member 170 as a modification. FIG. 4A shows a side sectional view including the central axis. As shown in the figure, the first member 170 is formed with a gap 171 having a wide inner diameter d2 at the open end, and a gap 175 having a narrow inner diameter d1 is formed stepwise at the back thereof. These voids 171 and 175 together serve as an engaging portion. Not limited to two stages, voids of three or more stages may be formed.

FIG. 4B shows the boundary surface (cross section of BB) between the void 171 and the void 175. As shown in the figure, the void 175 is formed with three recesses 176. The recess 176 is formed at a position and shape corresponding to a convex portion (not shown) provided on the outer periphery of a small cap having an outer diameter corresponding to the inner diameter d1 of the gap 175. Further, the recess 176 is a non-penetrating groove in a state where the outer wall 173 is left on the outer periphery thereof, as in the embodiment.
By doing so, in the modified example, the concave portion 176 of the gap 175 can be engaged with the convex portion of the small cap to open and close the small cap.

FIG. 4C shows a bottom view (CC view). As shown in the figure, six recesses 172a to 172f are formed in the void 171. The concave portion 172 is formed at a position and shape corresponding to a convex portion provided on the outer periphery of a large cap having an outer diameter corresponding to the inner diameter d2 of the gap 171.

However, in the modified example, two types of large caps, the cap 20 shown in FIG. 4 (d) and the cap 20A shown in FIG. 4 (e), can be supported.
FIG. 4D shows the planar shape (outer shape only) of the portion of the cap 20 including the convex portion. The cap 20 is the same as that shown in FIG. 1 (c), and is provided with three convex portions 22a, 22c, and 22e at intervals of 120 degrees.
FIG. 4 (e) shows the planar shape (outer shape only) of the portion of the cap 20A including the convex portion. The cap 20A is provided with four convex portions 22a, 22b, 22d, and 22f at 90-degree intervals.

The first member 170 of the modified example has recesses 172a to 172f formed at positions and shapes corresponding to all the convex portions 22a to 22f of the cap 20 and the cap 20A. The recess 172a is commonly used for the caps 20 and 20A.
By doing so, when used for the cap 20, the concave portions 172a, 172c, and 172e engage with the convex portions 22a, 22c, and 22e, respectively, and the cap 20 can be opened and closed. Further, when used for the cap 20A, the concave portions 172a, 172b, 172d, and 172f engage with the convex portions 22a, 22b, 22d, and 22f, respectively, and the cap 20A can be opened and closed.

By using the first member 170 of the modified example in this way, it is possible to deal with various caps such as caps having different diameters and caps having different positions of convex portions. Regardless of the configuration of the modification, the recess may be formed to accommodate more caps, or the recess may be formed to accommodate any one cap.

FIG. 5 is an explanatory diagram showing an example of using the cap opening / closing assisting tool 100. When the cap opening / closing assisting tool 100 of the embodiment is not used, as shown in FIG. 5A, it is necessary to take out a plurality of water supply bottles arranged in the basket one by one and open / close the cap, which is very difficult. Known for complicated work. Further, as shown in FIG. 5 (b), it is possible to open and close each cap by pushing the hand from above with the water bottle in the basket, but since it takes an unreasonable posture, it can be put on the finger. It will be a great burden.

On the other hand, if the cap opening / closing assisting tool 100 is used, as shown in FIG. 5C, the cap can be easily opened / closed simply by covering the cap opening / closing assisting tool 100 from above and turning it.
In the cap opening / closing assisting tool 100 of the embodiment, since the engaging portion, the extending portion, and the handle portion to be put on the cap are arranged on the central axis, there is an advantage that it is easy to put on the cap and engaged with the cap, and the operability is very excellent. .. In addition, the fact that the handle portion can be covered while being grasped and rotated as it is also contributes to the improvement of operability.
Further, since the cap opening / closing assisting tool 100 of the embodiment is provided with a sufficiently long extension portion, it can be efficiently opened / closed because it does not interfere with the adjacent water supply bottle when the handle portion is rotated.

The cap opening / closing assisting tool 100 of the embodiment does not necessarily have all of the above-mentioned various features, and some of them may be omitted or combined as appropriate.
Further, the present invention is not limited to the above-described embodiment, and various modified examples can be configured without changing the gist thereof. For example, in the embodiment, an auxiliary tool for opening and closing the cap of a water supply bottle for breeding has been exemplified, but the target for opening and closing is not limited to this, and the cap of a PET bottle or other various containers can be used. It is not limited to those with a spout on the cap.

The present invention can be used as a cap opening / closing assisting tool used for opening / closing a screw-type cap for closing an opening of a container.

10 Container 20, 20A Cap 21 Drinking port 22, 22a to 22f Convex part 100 Cap opening / closing aid 110, 170 First member 111 Void 112, 112b, 112c Recess 113, 113a Outer wall 130 Second member 150 Third member 160 Torque regulation Mechanism 171, 175 Void 172, 172a to 172f Recess 173 Outer wall 175 Void 176 Recess

Claims (10)

A cap opening / closing aid used to open / close a screw-in cap for closing the opening of a container.
An engaging portion for engaging with a concave portion or a convex portion formed on the outer periphery of the cap,
An extension portion formed integrally with or separately from the engagement portion and extending the engagement portion in the direction of the rotation axis,
A cap opening / closing assisting tool including a handle portion provided at or near the other end of the stretched portion. The cap opening / closing assisting tool according to claim 1.
The stretched portion is a cap opening / closing assisting tool that stretches the extension portion so that the distance from the open end of the engaging portion to the handle portion is longer than the total length of the cap. The cap opening / closing assisting tool according to claim 1 or 2.
A cap opening / closing assisting tool having an outer diameter of the handle portion larger than the outer diameter of the cap. The cap opening / closing assisting tool according to any one of claims 1 to 3.
A convex portion is formed on the outer circumference of the cap.
The engaging portion is a cap opening / closing assisting tool having a concave portion that engages with the engaging portion. The cap opening / closing assisting tool according to claim 4.
The concave portion is a cap opening / closing assisting tool whose width on the opening end side is wider than the width of the convex portion and is tapered so as to be narrower toward the back. The cap opening / closing assisting tool according to claim 4 or 5.
The recess is a cap opening / closing assisting tool that is a groove that does not penetrate to the outside of the engaging portion. The cap opening / closing assisting tool according to any one of claims 4 to 6.
There are multiple types of caps that can be opened and closed.
The concave portion of the engaging portion is a cap opening / closing assisting tool formed in a number and position capable of engaging with all the convex portions of the plurality of types of the cap. The cap opening / closing assisting tool according to any one of claims 4 to 7.
There are multiple types of caps with different outer diameters that can be opened and closed.
The engaging portion is
A plurality of inner diameter gaps corresponding to the plurality of types of caps are formed so that the inner diameter gradually decreases from the opening side to the back.
A cap opening / closing assisting tool in which a concave portion is formed on the inner surface of each void so as to engage with a convex portion on the outer periphery of the cap corresponding to the inner diameter thereof. The cap opening / closing assisting tool according to any one of claims 1 to 8.
A cap opening / closing assisting tool provided with a torque regulating mechanism that regulates the magnitude of torque transmitted from the handle portion to the engaging portion between the engaging portion and the handle portion. The cap opening / closing assisting tool according to any one of claims 1 to 9.
A cap opening / closing assisting tool in which the engaging portion, the centrifugal portion, and the handle portion are made of resin.

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