JP6708873B2 - Pencil case - Google Patents

Description

The present invention relates to a pencil case having a lock mechanism.

The pencil case is a storage case for storing stationery such as pencils and erasers, and is one of the stationery that has been indispensable since school. For school children at school, the pencil case is also a stationery item with an educational function, because by sharpening the pencil and putting it in the pencil case, you can remember the necessity of preparation and tidying up.

An ordinary pencil case has a structure in which the lid is kept closed by magnetic force or the like. However, it is a common scene in school life that a child who is still attentive is dropping the pencil case and opening the lid, and scatters the stationery inside it on the floor. May be interrupted. Alternatively, the pencil case may be carried as a single unit during extracurricular lessons, extracurricular lessons, classroom movements, outdoor observation, etc., but even if it is a short time, it is not possible to put it in the bag etc. There is. If you only hold the lid, the lid may open. In addition, many pencil cases for school children have a lid made of a plastic material, and even if many things are put inside, they can be forcibly fixed with a magnet. However, in such a state, the magnetic force does not work sufficiently and the lid may open in the school bag.

In order to solve such a problem, a pencil case lock mechanism has been conventionally proposed. The lock mechanism is provided with a fitting mechanism inside the side surface of the pencil case, and the fitted state is maintained by the elastic force of the spring (for example, Patent Document 1).

Japanese Utility Model Publication No. 49-144610

However, since the structure as disclosed in Patent Document 1 is provided inside the pencil case, it is necessary to make the lock mechanism as narrow as possible in order to secure the internal volume for storing the stationery. Therefore, the fitting portion cannot be made large, and it is difficult to obtain a lock mechanism having sufficient strength. In addition, the schoolchildren's handling of the pencil case is not always polite, and it is often the case that the pencil case is distorted by an action such as inadvertently dropping it on the floor or sitting on the pencil case. In the conventional lock mechanism in which the fitting portion cannot be taken large, there has been a problem that the lock mechanism does not work even with a slight distortion of the pencil case. Alternatively, since the lock mechanism is inside the pencil case, there is a problem that the broken lock mechanism interferes and the pencil case cannot be closed.

If the lock mechanism is enlarged, these problems are alleviated, but in that case, a fundamental problem that the storage space of the pencil case is restricted occurs. Alternatively, the outer shape of the pencil case becomes large in order to secure a storage space for the pencil case, which causes problems in portability and cost.

The present invention has been made in view of such a problem, and has a lock mechanism that has sufficient strength and is not easily damaged without reducing the storage space of the pencil case, even though the mechanism is simpler than in the past. The purpose is to provide a pencil case.

A pencil case according to claim 1 of the present invention includes a storage part having an opening surface at an upper portion, a lid part having one side rotatably coupled to the storage part and opening/closing with respect to the storage part, and the lid part being opened. A pencil case having a lock part for prohibiting
The lock part is provided to fix the lock plate to the side face of the storage part, and a lock plate rotatably coupled to the other side facing one side of the lid part with the vicinity of the other side as a rotation axis. A first lock plate fixing means, and a second lock plate fixing means provided for fixing the lock plate to the upper surface of the lid portion,
The first lock plate fixing means includes means for urging the lock plate toward the side surface of the storage portion, and an engagement portion provided on the side surface of the storage portion for engaging with the lock plate. ,
The second lock plate fixing means is a means for urging the lock plate toward the upper surface of the lid portion, and the urging means is an elastic force generated by an elastic member, and the lock plate is stored in the housing. The elastic energy of the elastic member is maximized at an intermediate angular position between the side surface of the portion and the upper surface of the lid portion .
The invention described in claim 2 of the present invention is the pencil case described in claim 1, wherein the urging means applies the elastic force of the elastic member in the rotational axis direction of the lock plate to generate elasticity. The feature is that the force is converted into the rotational direction by a cam mechanism.

The new lock mechanism, which is completely different from the conventional lock mechanism, is a simpler mechanism than the conventional one, but it has sufficient strength without reducing the storage space of the pencil case, and it has the advantage that it is not easily damaged. is doing. By providing this lock mechanism, the pencil case according to the present invention overcomes various problems of the conventional pencil case, and is particularly suitable as a pencil case to be used by school children who are new to school.

1 is a perspective view of a pencil case according to the present invention, in a state where a lock is released. 1 is a perspective view of a pencil case according to the present invention with a lid partly opened. 1 is a perspective view of a pencil case according to the present invention, in a locked state. FIG. 3 is a perspective view of a lock part of a pencil case according to the present invention. It is a principal part figure which comprises the lock part of the pencil case which concerns on this invention. It is a figure when the main parts which comprise the lock part of the pencil case concerning the present invention are assembled. It is a figure for demonstrating operation|movement of the lock part of the pencil case which concerns on this invention. It is a figure for demonstrating operation|movement of the lock part of the pencil case which concerns on this invention. It is a figure for demonstrating operation|movement of the lock part of the pencil case which concerns on this invention. It is explanatory drawing of the assembly of the pencil case which concerns on Embodiment 2 of this invention. It is a figure for demonstrating operation|movement of the lock part of the pencil case which concerns on Embodiment 3 of this invention.

An embodiment of a pencil case according to the present invention will be described below with reference to the drawings. The following embodiment is an optimum example of the present invention, and the present invention is not particularly limited to this example.

Embodiment 1
<Overall structure>
The overall structure of the pencil case will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view of the pencil case in a state where the lock is released. FIG. 2 shows a state in which the lid is opened halfway. Further, FIG. 3 shows a locked state.

The pencil case has a storage part 1 having an opening surface at the top, a lid part 2 which is rotatably connected to the storage part 1 at one side and opens and closes with respect to the storage part 1, and forbids opening of the cover part 2. And a lock portion 3 of In the following, one side of the lid portion that is connected to the storage portion 1 is referred to as a fixed side 2A, and the other side opposite thereto, that is, the side where the lid portion 2 is opened and closed is referred to as an open/close side 2B.

The storage unit 1 may be in the shape of a rectangular parallelepiped as shown in the drawing, or may be a pencil case having a design such that the side surface is curved. Therefore, the fixed side 2A and the open/close side 2B are not necessarily straight lines but may be curved lines. The fixed side 2A may be the bottom side of the storage section 1 as shown in the figure, or may be the upper side of the storage section 1, that is, one side of the opening.

The constituent materials of the storage unit 1 and the lid unit 2 are not particularly limited, but in the present embodiment, the materials normally used for the pencil case for school children are used. That is, the storage portion 1 is a relatively hard resin, and the lid portion 2 is a plastic material with a cardboard core or the like as a core.

Further, in order to easily fix the storage portion 1 and the lid portion 2, a mechanism using a magnet and a magnetic metal plate that are often used in ordinary pencil cases may be provided.

<Structure of lock part>
Next, the configuration of the lock portion 3 will be described with reference to FIGS. 4 to 6. The lock mechanism conventionally used in the pencil case has been provided inside the pencil case, but in the present invention, the lock mechanism is provided outside the pencil case. It has been considered that providing the lock mechanism on the outside of the pencil case causes the lock mechanism to easily come into contact with or be caught on an object such as a desk, and the lock mechanism is easily damaged. In addition, the lock member may protrude to the outside of the pencil case, and it may get caught when it is stored in a bag or a school desk, or it may require a large storage space even after it is stored, which causes a problem in "storability". Was also a concern. Despite such a big problem, the reason why the lock mechanism is provided outside is to find out that these problems can be solved by making some efforts. In addition, we found that the problem that the conventional pencil case with a lock mechanism had was caused by providing the lock mechanism inside, and determined that providing the lock mechanism outside the pencil case is indispensable for solving the problem. Because it was done.

FIG. 4 is a perspective view of the lock portion 3 of the pencil case, and is an enlarged view of the lock portion 3 in FIG. 3 in a locked state. The lock part 3 has a lock plate 31 rotatably coupled to the open/close side 2B of the lid part 2 with the vicinity of this side as a rotation axis, and is provided to fix the lock plate 31 to the side surface of the storage part 1. It has one lock plate fixing means and a second lock plate fixing means provided for fixing the lock plate 31 to the upper surface of the lid portion 2.

Rotating the lock plate 31 outside the pencil case in this manner seems to make it easier to contact or get caught on an object such as a bag or a desk, as described above. Alternatively, there is a concern that the clothes may get caught in the sleeves. At the beginning of development, I was worried about the adoption of this mechanism due to such concerns, but by providing the first locking plate fixing means and the second locking plate fixing means, such a problem actually occurs. It was found that

The first lock plate fixing means and the second lock plate fixing means may be magnetic or magnetic fasteners. Alternatively, an elastic spring may be used. Alternatively, when the lock plate 31 is located near the side surface of the storage part 1 or the upper surface of the lid part 2 when the lock plate 31 is rotated, a strong rotational sliding resistance is imparted to prevent the lock plate 31 from slightly vibrating. May not move. Further, it may be a detachable fitting means that fits with a sliding resistance such as a recess having a small clearance between the projections. As described above, the second lock plate fixing means may be a mechanism that locks the lock plate 31 in the vicinity of the upper surface of the lid portion 2 so as not to move, depending on some external force. On the other hand, the first lock plate fixing means is a mechanism that locks the lock plate 31 in the vicinity of the side surface of the storage unit 1 to the extent that the lock plate 31 does not move by some external force, and when the lid unit 2 moves in the opening direction. And a locking mechanism for suppressing the movement. In the present embodiment, the best possible configuration among these fixing means will be described in detail.

As a specific configuration, in addition to the lock plate 31, an elastic member 32, a shaft 35, a fixing plate 33 for fixing them, a pin 34 for fixing the fixing plate to the lid portion 2, and a lock plate 31 are stored. The lock portion 3 is composed of the lock engagement portion 36 and the like for engaging with the portion 1.

Of these configurations, the most functionally important configuration is the elastic member 32 for biasing the lock plate 31 to the side surface of the storage section 1 and the upper surface of the lid section 2. FIG. 5 shows the configuration of the lock plate 31 and the elastic member 32. FIG. 5A is a top view of each, and FIG. 5B is a side view.

First, the lock plate 31 includes a plate-shaped operation portion 31B, an engagement opening 31A that is an opening opened therein, and a columnar body provided at one end of the operation portion 31B. A shaft hole 31C, which is a through hole, is formed at the center of the cylindrical body, and a counterbore curved surface 31D, which is a counterbore on a curved surface, is provided around the shaft hole 31C. The spot facing curved surface 31D is not a spot facing having a uniform depth but a spot facing of a curved surface. That is, the depth changes according to the circumferential angle of the circumference with the center of the shaft hole 31C as the rotation axis. In FIG. 5(b), 31E is the shallowest shallowest part in the spot facing, 31F is the deepest deepest part, and at an intermediate circumferential angle, it gradually increases from the shallowest part 31E to the deepest part 31F. The spot facing is deep.

The elastic member 32 includes a fixed portion 32A that is fixed by being held down by the fixing plate 33, a beam support portion 32F formed at one end of the fixed portion 32A, and two substantially circles extending from the beam support portion 32F. And a beam 32B having a shape. Further, the fixed portion 32A is provided with an in-plane position fixing engagement portion 32E which is a protrusion for further stabilizing the fixing by the fixing plate 33. Further, a shaft hole 32C is formed at the center of the two beams 32B, and a protrusion 32D is provided near the tip.

As shown in FIG. 6, the lock plate 31 and the elastic member 32 are rotatably fixed to each other about the shaft 35 by passing the shaft 35 through the shaft holes 31C and 32C. At this time, the protrusion 32D provided near the tip of the beam 32B of the elastic member 32 contacts the counterbore curved surface 31D of the lock plate 31. Further, in this state, the two beams 32B of the elastic member 32 are in a slightly expanded state as compared with the elastically balanced state, and apply a force in a direction to sandwich the counterbore curved surface 31D.

<Operation of lock part>
How the lock unit having the above configuration functions will be described with reference to FIGS. 7 to 9. FIG. 7 shows a case where the lock plate 31 is located at a substantially intermediate angular position between the side surface of the storage section 1 and the upper surface of the lid section 2. At this time, the protrusion 32D is on the shallowest portion 31E of the spot facing curved surface 31D, and the two beams 32B of the elastic member 32 are in the most expanded state. Therefore, a strong force is applied to the spot facing curved surface 31D in the direction of pinching. When the operating portion 31B is pushed down from this state, a biasing force in the direction of arrow b toward the side surface of the storage portion 1 acts on the lock plate 31. Conversely, when the operating portion 31B is pushed up, the lock plate 31 is closed. The urging force in the direction of the arrow a acts on the upper surface of the.

FIG. 8 shows the case where the lock plate 31 is at the position on the side surface of the storage unit 1, that is, the locked state. At this time, the protrusion 32D is near the deepest part 31F of the spot facing curved surface 31D, and the two beams 32B of the elastic member 32 are considerably narrowed. That is, although the elastic force of the elastic member 32 is considerably small, the lock plate 31 is pressed against the side surface of the storage portion 1 because the urging force in the c direction in the figure is still acting. Further, the engagement opening 31A provided in the operation portion 31B of the lock plate 31 engages with the lock engagement portion 36 provided on the side surface of the storage portion 1 to prevent the lid portion 2 from opening. Reference numeral 36A denotes a lock engaging portion fixing plate, which is provided to firmly fix the lock engaging portion 36 to the side surface of the storage portion 1. The locking engagement portion 36 and the locking engagement portion fixing plate 36A may not be separate bodies, but may be formed by resin integral molding. Alternatively, the locking engagement portion 36, the locking engagement portion fixing plate 36A, and the storage portion 1 may all be integrally formed.

FIG. 9 shows the case where the lock plate 31 is at the position on the upper surface of the lid portion 2, that is, the unlocked state. At this time, the protrusion 32D is near the deepest part 31F of the spot facing curved surface 31D, and the two beams 32B of the elastic member 32 are considerably narrowed. That is, although the elastic force of the elastic member 32 is considerably small, the lock plate 31 is pressed against the upper surface of the lid portion 2 because the urging force in the direction d in the drawing still works. Further, the engagement opening 31A provided in the operation portion 31B of the lock plate 31 engages with the in-plane position fixing engagement portion 32E provided on the upper surface of the lid portion 2, and the lock plate 31 of the lid portion 2 is provided. It is fixed more stably by the upper surface.

<How to use>
When releasing the locked state shown in FIG. 8, the operating portion 31B is pushed up. When the lock plate 31 is pushed up beyond the intermediate position shown in FIG. 7, an urging force acts in the direction a shown in FIG. On the other hand, when locking is performed from the unlocked state, the operation unit 31B is pushed down. When the lock plate 31 is pushed down to a position beyond the intermediate position shown in FIG. 7, an urging force acts in the direction b shown in FIG.

As described above, the elastic energy of the elastic member is maximized at the intermediate angular position between the side surface of the storage section 1 and the upper surface of the lid section 2, so that the elastic plate can be locked by one elastic member. It becomes possible to bias 31 in both the lateral direction of the storage section 1 and the upper surface direction of the lid section 2. In particular, in the present embodiment, the elastic force of the elastic member is applied in the rotation axis direction of the lock plate 31, and is converted into the movement in the rotation direction by the cam mechanism using the counterbore curved surface 31D.

<Features of the present invention>
Since the pencil case according to the present invention is configured and operates as described above, it has many features described below. First, since the lock mechanism is outside the pencil case, the storage volume in the storage section is not narrowed. Therefore, the degree of freedom in designing the structure is increased, and the lock strength can be increased by increasing the size of the engaging portion. Further, even if the pencil case is slightly distorted, the lock mechanism does not break and the function can be maintained.

The lock mechanism also contributes to increasing the strength of the pencil case. For example, in the configuration of the present embodiment, the lock mechanism acts not only in the unlocking direction but also in the lateral direction (longitudinal direction of the pencil case), so that the strength is increased against various external forces acting on the pencil case. Acts as a skeleton. Therefore, distortion is unlikely to occur in the pencil case. Further, since the lock mechanism is located outside the pencil case, even if the lock mechanism is damaged, the fatal problem that the lid cannot be closed does not occur. On the other hand, even if it is damaged in the locked state, since the lock mechanism is exposed, the lock can be easily released, and there is no concern that the contents cannot be taken out. In the case of the conventional spring structure provided inside, it may be difficult to release the lock. Further, since unlocking is an operation of pulling up greatly from below toward the upper side with rotation, the risk of accidentally unlocking is small. On the other hand, with the conventional slide lock type mechanism, if the lock release knob is moved to the left or right by several mm, the lock is easily released. Also, if the lock plate is biased toward the side of the storage part by elastic force or magnetic force, even if the lock plate is accidentally pushed up a little, the lock plate should return to the locked state by the biasing force. You can

There are many advantages in terms of manufacturing cost. First, no special manufacturing process is required. Since the lock mechanism is provided on the outside of a normal pencil case that does not have a lock mechanism, the existing manufacturing process can be used for the pencil case body. Therefore, a special process such as incorporating a coil spring inside the pencil case is not necessary, and the lock mechanism provided outside only fixes the assembled mechanism as shown in FIG. 6 to the upper part of the lid. It is possible to minimize the increase in the cost related to.

Further, in the case of a pencil case having a simple fixing mechanism that is often used in an ordinary pencil case, that is, a mechanism in which a permanent magnet is provided in the storage section and a metal plate is provided on the back side of the lid section, the pin 34 in the above-described embodiment is used. Since a metal plate provided on the back side of the lid can be used as a member for securely fastening, an increase in the number of parts can be prevented.

Alternatively, when magnetic force is used for the first lock plate fixing means and the second lock plate fixing means, the number of parts can be further reduced. For example, the first lock plate fixing means and the second lock plate fixing means can be realized only by incorporating a thin permanent magnet into the lock plate. That is, the first lock plate fixing means can be realized by attracting the permanent magnets provided in the housing portion and the permanent magnets incorporated in the lock plate, while the second lock plate fixing means is provided on the back side of the lid portion. This can be realized by attracting the metal plate provided in the and the permanent magnet incorporated in the lock plate. As described above, when there is a simple fixing mechanism that is often used in an ordinary pencil case, by using it, the number of parts can be further reduced.

In addition, there was a problem that was a concern at the beginning of development, that is, if the lock mechanism is provided outside the pencil case, the lock mechanism may be easily damaged by contact with an object such as a desk. As for this, in practice, it was possible to solve it without any particular problems. This is because the degree of design freedom of the structure is expanded by providing the lock mechanism on the outside. For example, the shape of the lock plate can be freely changed. By slightly bending the shape of the operating portion of the lock plate, when the lock plate is fixed to the upper surface of the lid by the second lock plate fixing means, as shown in FIG. 9, the tip of the lock plate is positioned on the upper surface of the lid. It becomes closer, and the risk of getting caught on an object can be greatly reduced. On the other hand, when the lock plate is fixed to the side surface of the storage portion by the first lock plate fixing means, the tip of the lock plate is located slightly away from the side surface of the storage portion, as shown in FIG. The lower portion of the side surface of the storage portion where the tip of the lock plate is located is a place where it is less likely to be caught by an object as compared with the upper portion of the lid, and even with such a configuration, a practically large problem does not occur. Not only that, the tip of the lock plate is slightly separated from the side surface of the storage portion, so that the tip of the lock plate can be easily pulled up with a finger, and the unlocking operation can be facilitated. When the lock plate is fixed to the upper surface of the lid, the lock plate is in a position that is easy to see, and therefore the lock plate can be operated without any problem even when the tip of the lock plate is near the upper surface of the lid. ..

As described above, there is practically no problem that the external lock mechanism gets in the way, rather, rather than the lock mechanism provided inside the pencil case, the locking part pops out when the pencil case is opened. Can be said to be even safer.

Also, in terms of design, the lock mechanism has a neat shape along the surface of the pencil case, and since the lock plate is an accent in design, it is easy to obtain a novel design. In particular, since there is no great restriction on the shape of the lock plate, the degree of freedom in design can be increased.

For example, there is room for ingenuity that balances design and function. Since the lock plate is in the most prominent position in the center of the front of the pencil case, if the lock plate is molded into a character shape or a shape such as a logo, it is possible to give the customer a strong impression as a character product linked with the function. Alternatively, by bulging a circular plate near the end of the lock plate, it is possible to use the circular bulge as a pen holder when the lock plate is fixed to the upper part of the lid. Further, by making the lock plate a horizontally long shape extending in the longitudinal direction of the pencil case, it is possible to provide a function as a protector for protecting the end portion of the lid and the storage portion.

Alternatively, in the case of the main lock function, there is also an advantage that even with a double-opened pen case having storage parts above and below the pen case, the front and back lids can be locked by one locking mechanism. It is also a great merit that it can be seen at a glance whether it is in the locked state or in the unlocked state depending on the position of the lock plate that is easily noticeable.

In addition to the above, the great advantage of the present invention is that a locked state and a released state can be easily obtained. Many locking mechanisms used in pencil cases are automatically locked when the lid is closed, and it is necessary to unlock the locking mechanism and push up the lid when opening the lid. Therefore, when opening and closing the pencil case frequently, such as during class, there was a problem of lacking functionality. On the other hand, in the case of the lock mechanism of the present invention, the unlocked state can be obtained by a simple operation, which is functional. In addition, the unlocking operation, that is, the operation of pushing up the lock plate and the operation of opening the lid have the same operation direction and can be performed as a series of operations. Therefore, the operation of opening the lid from the locked state also functions. Can be done on a regular basis.

Many of the merits described above are merits of the locking mechanism by the rotatable lock plate provided outside the pencil case, but when the mechanism using the elastic member disclosed in detail in the present embodiment is adopted, There are many benefits.

First, if the lock plate is moved to the neutral angle between the locked state and the unlocked state, the lock plate rotates due to the elastic force, so that the lock can be released and locked easily. At the time of this operation, you can enjoy a nice operation feeling that the lock plate snaps lightly. On the other hand, until the neutral angle is reached, the elastic force for returning to the original position acts on the lock plate, so that even if a force is applied to the lock plate by mistake, no malfunction such as unlocking occurs.

Further, in the locked state and the released state, since the elastic energy of the elastic member is small, that is, the elastic member is relatively loose, deterioration of the elastic coefficient of the elastic member over time does not easily occur, and the long-term reliability of the locking mechanism is improved. Can be secured.

Further, since the elastic member may be formed of resin, mass productivity is high and cost reduction is easy. Also, unlike metal springs, there is no risk of rusting. Alternatively, when a metal spring is used, if the lock mechanism is damaged for some reason, the metal spring may fly violently, causing serious accidents such as damaging the user. If so, there is no such concern. Also, by changing the shape and depth of the spot facing curved surface, it is possible to easily change the position of the neutral point and the force required to move the lock plate, further expanding the freedom of design. it can.

Embodiment 2.
In the first embodiment, the main components forming the lock portion shown in FIG. 6 are arranged on the upper surface of the lid 2 and fixed using the fixing plate 33 and the pins 34. In the present embodiment, as shown in FIG. 10, a notch 4 is provided in the lid portion 2 where the main parts constituting the lock portion are arranged. The size of the notch is such that the rotary shaft portion of the main component composed of the lock plate 31, the elastic member 32, and the shaft 35 can be accommodated.

By providing such a notch 4 and disposing the rotary shaft portion of the main component in the notch 4 and fixing it to the lid portion 2 using the fixing plate 33 and the pin 34, the lock in the locked state and the unlocked state is achieved. It is possible to make the plate 31 more along the side surface of the storage portion 1 and the upper surface of the lid portion 2. As a result, the degree of freedom in designing the shape of the lock plate 31 is further improved, and a cleaner design can be obtained.

Note that the lid of the pencil case used by children at school is a cardboard core as described above, and a sponge is placed around it, and the surface is made of leather or vinyl. Many have multiple structures. It is not easy to provide a notch in such a complicated shape, but mass production is also possible by using a blade having the same shape as the notch. Alternatively, laser cutting may be used depending on the material forming the lid.

Embodiment 3.
In the first embodiment, the lock part includes the lock plate 31, the first lock plate fixing means provided for fixing the lock plate 31 to the side surface of the storage part 1, and the lock plate 31 of the lid part 2. The second lock plate fixing means provided for fixing to the upper surface was provided, but in the present embodiment, the configuration of the lock portion not including the second lock plate fixing means will be described.

FIG. 11 is a diagram for explaining the operation of the lock unit of the pencil case. Similar to the first embodiment, the lock plate 31 rotates about the end portion of the lid 2 as a rotation axis, but it does not need to rotate largely. For example, about 15° in the direction indicated by d from the state shown in the figure. It only needs to have a range of rotation. Then, it is urged toward the side surface of the storage portion 1 by elastic force or magnetic force. Further, the locking engagement portion 36C provided on the side surface of the storage portion 1 has a slope shape in which the upper surface is lowered toward the bottom surface of the storage portion 1 as the upper surface is separated from the side surface of the storage portion 1. The slope may be a straight line or a curved slope, such as another locking engagement portion 36D shown in the circle.

As shown in FIG. 11, when the lid portion 2 is closed, the lower end of the lock plate 31 contacts the upper end of the lock engagement portion 36C, and when the lid portion 2 is further pressed and closed, the lower end of the lock plate 31 locks. It moves along the slope provided on the upper surface of the engaging portion 36C. When the vehicle goes over the apex of the lock engaging portion 36C, the engagement opening 31A fits into the lock engaging portion 36C when the lid 2 is completely closed, so that the lock state is obtained. On the other hand, when opening the lid portion 2, the lid portion 2 may be opened while lightly pushing up the lock plate 31.

The pencil case according to the present embodiment is likely to be caught by a pencil or the like because the lock plate is protruding from the lid when the lid is opened, but on the other hand, since the degree of freedom in design can be secured, Many features shown in the first embodiment can be obtained.

1 Storage part 2 Lid part 2A Fixed side 2B Opening/closing side 3 Lock part 31 Lock plate 31A Engaging opening 31B Operating part 31C Shaft hole 31D Counterbore curved surface 31E Shallow part 31F Deepest part 32 Elastic member 32A Fixed part 32B Beam 32C Shaft hole 32D Protrusion 32E In-plane position fixing engagement portion 32F Beam support portion 33 Fixing plate 34 Pin 35 Shaft 36 Lock engaging portion 36A, 36C, 36D Lock engaging portion fixing plate a, b, c Elastic force Biasing direction

Claims (2)

A storage part having an opening surface at the top, a lid part that is rotatably connected to the storage part at one side and opens and closes with respect to the storage part, and a lock part for prohibiting opening of the cover part. It is a pencil case equipped with,
The lock part is provided to fix the lock plate to the side face of the storage part, and a lock plate rotatably coupled to the other side facing one side of the lid part with the vicinity of the other side as a rotation axis. A first lock plate fixing means and a second lock plate fixing means provided for fixing the lock plate to the upper surface of the lid portion,
The first lock plate fixing means includes means for urging the lock plate toward the side surface of the storage portion, and an engagement portion provided on the side surface of the storage portion for engaging with the lock plate. ,
The second lock plate fixing means is a means for urging the lock plate toward the upper surface of the lid portion,
The biasing means is an elastic force generated by an elastic member so that the elastic energy of the elastic member becomes maximum at an angular position between the lock plate and the side surface of the storage portion and the upper surface of the lid portion. A pencil case that is characterized by what you have done. The pencil case according to claim 1 , wherein the urging means applies an elastic force of the elastic member in a rotation axis direction of the lock plate, and converts the elastic force into a rotation direction by a cam mechanism.