JP2009274736A - Portable card case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To coexist preventing cards from falling down and easiness of taking the cards into and out of a card case which is made of a metal sheet and is excellent in strength. <P>SOLUTION: This card case consists of first and second storing bodies 1 and 2 with card storing functions. Both storing bodies 1 and 2 are connected with each other at positions of first short side peripheral walls 1b and 2b by a hinge means 3. Second short side peripheral walls 1c and 2c of both storing bodies 1 and 2 are inclined to bottom plates 1a and 2a. On long side peripheral walls 1d and 2d, stoppers 9 and 10 for preventing the cards from falling down are bent and formed. Because of presence of peripheral walls 1b and 2b to 1d and 2d and the stoppers 9 and 10, the cards do not fall down even if storing bodies 1 and 2 face downward, and as the second short side peripheral walls 1c and 2c are inclined, the cards can be easily taken in and out. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a metal card case used to store rectangular cards such as a business card case, and is particularly suitable for a relatively thin portable card case. The card case can also be called a card holder or a card slot. There are also many types of cards. Other cards, such as credit cards, ID cards, employee ID cards, cash cards, various member cards, examination tickets, licenses, insurance cards, commuter passes, game machine cards, cosmetic oil blotting paper, etc. Is mentioned.

  The material and form of the card case are diverse. For example, natural or artificial leather, cloth, paper, synthetic resin, metal plate, etc. are used for the material. In many cases, multiple types of materials are used. Among these, card cases made of a metal plate have features such as excellent strength even when thin and a unique texture, and are expected to penetrate into the market.

  And the example of the card case made from a metal plate is mentioned by patent document 1,2. Among them, FIG. 4 of Patent Document 1 discloses a conventional technique in which a substantially flat lid plate is connected to a tray-like (which may be called a dish-like shape or a shallow box-like) body by a hinge. In addition, in Patent Document 1, as an embodiment of the invention according to the application, a shallow box-shaped main body having a card storage function and a lid are connected with a hinge (hinge) so that they can overlap each other, and the main body and the lid A structure in which a rotary card press is provided is disclosed.

On the other hand, in Patent Document 2, in a structure in which a tray-like main body in which cards are stored and a lid that closes the card are connected by hinge means, two longitudinal peripheral walls extending in a direction orthogonal to the hinge among the peripheral walls of the main body One side of the main body is cut out, and a collar part for preventing the card from dropping is provided inwardly on the peripheral wall located at the free end and the long peripheral wall that is not cut out. The structure of providing a wall part in the location located in the location of the cut away longitudinal peripheral wall is disclosed.
JP 2000-185781 A Japanese Utility Model 6-33519 CD-ROM

  Now, the card case made of a metal plate has the characteristics that it is robust and excellent in strength, but this robustness is synonymous with the fact that the card case does not bend and deform, and therefore it ensures the ease of card insertion and removal. Is an element of merchantability.

  However, in Patent Document 1, each peripheral wall of the main body intersects with the bottom plate at a right angle. Therefore, in order to remove the card, the card must be dropped with the main body or the lid opened downward. When removing a card from the cover, the card holder of the main unit must be raised with your fingertips, and the main unit must be in the downward opening position. In any case, taking out the card is troublesome.

  On the other hand, in Patent Document 2, since one longitudinal peripheral wall of the main body is cut away, the card stored in the main body can be taken out by sliding it sideways with a fingertip while the main body is opened upward. Therefore, it can be said that the card can be easily taken out. However, since the excision part of the main body is closed by the wall of the lid, there is a problem that if the card case is inadvertently tilted with the lid open, the card will slide down, or the lid is not fully closed There is a problem that the card may fall off.

  This invention is made | formed in view of such a situation, and makes it a main subject to provide a user-friendly metal plate card case.

  The present invention includes two types: a type in which two storage bodies are connected, and a type in which a lid is connected to the main body. The invention according to claim 1 relates to a card case in which two storage bodies are connected by hinge means. In this invention, first, the two storage bodies are substantially rectangular so that square cards can be stacked and stored. The two storage bodies can be freely changed between a closed state in which the opening surfaces are overlapped with each other and an open posture in which the opening surfaces are separated from each other. Are connected by the hinge means at a portion of the peripheral wall of the storage body.

  And among the four peripheral walls constituting the two storage bodies, at least the peripheral wall opposite to the hinge means is inclined or curved so as to form an obtuse angle with respect to the bottom plate, and the four peripheral walls constituting the two storage bodies Out of the two peripheral walls extending in a direction perpendicular to the hinge means, a stopper piece is provided inwardly to hold the card so that the card does not fall even when the opening surface is faced downward.

  The invention of claim 2 relates to a card case of a type in which a lid is connected to a main body. That is, in claim 2, a tray-like main body having a bottom plate and four peripheral walls so that square cards can be stacked and stored, and a hinge means are connected to one peripheral wall of the main body to close the main body. A lid is provided, and at least a peripheral wall opposite to the hinge among the four peripheral walls in the main body is inclined or curved so that an angle formed with the bottom plate is an obtuse angle.

  In the case of claim 1, since both the storage bodies are surrounded by a peripheral wall, and both storage bodies are provided with stopper pieces, the card can be easily obtained even if the storage bodies are tilted in an open state. It will not drop out. And since the peripheral wall located at the free end opposite to the hinge means (in other words, the rotation center of both storage bodies) is inclined or curved with respect to the bottom plate, the cards stored in both storage bodies By sliding the fingertip to the surface and pulling it on the opposite side (front side) from the hinge means, it can be easily slid outward. That is, the card can be easily taken out. The card can also be stored easily by inserting it from the free end side.

  Therefore, according to the first aspect, in the card case made of a metal plate in which two storage bodies having a card storage function are connected, the card can be easily taken in and out while accurately preventing the card from dropping off. Further, in Patent Document 1, in order to store the card in the main body and the lid, it is necessary to raise the card one by one. Therefore, storing the card is troublesome, but in the invention of claim 1 of the present application, the card is not dropped. It is possible to easily store the card while accurately preventing it, and this is one of the features of the invention of claim 1.

  On the other hand, in the invention of claim 2, since the periphery of the main body is constituted by the peripheral wall, there is no problem that the card falls off, and the peripheral wall located at the free end opposite to the hinge means as in the case of claim 1. Since the card is inclined or curved with respect to the bottom plate, the cards stored in both storage bodies can be easily slid outwardly by pulling them forward with the fingertips against the surfaces. Since it is not necessary to raise the pressing member one by one when inserting the card, it is very easy to insert the card into the main body. Therefore, similarly to the first aspect of the invention, the card can be easily inserted and removed while accurately preventing the card from dropping out.

  In claim 2, it is possible to provide the main body with the same stopper piece as in claim 1. When this configuration is adopted, the main body can be opened with the lid in the down position or with the lid open. Even if it is tilted greatly, it is possible to accurately prevent the card from falling off.

  Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show the first embodiment, and FIG. 4 and subsequent figures show other embodiments. Hereinafter, the first embodiment will be described sequentially.

(1). Configuration of the first embodiment The first embodiment is a specific example in which claim 1 is applied to a business card case, and FIG. 1A is a perspective view of the closed business card case as seen from the front. FIG. 1, (B) of FIG. 1 is a partial perspective view of a closed business card case viewed from the rear, and (C) of FIG. 1 is a perspective view in an opened state.

  As can be understood from FIG. 1, the business card holder has a first storage body 1 and a second storage body 2 each having a shallow tray shape having a storage function for the business card C and rectangular in plan view. The housings 1 and 2 are connected by hinge means 3 so as to rotate relative to each other with a short side as a center. Therefore, the storage bodies 1 and 2 are closed or opened by relative rotation.

  Both storage bodies 1 and 2 are basically the same size and shape, and are respectively opposite to the bottom plates 1a and 2a, the first short side peripheral walls 1b and 2b forming the hinge means 3, and the hinge means 3. It has two long side peripheral walls 1d and 2d continuous to the long side edges of the second short side peripheral walls 1c and 2c and both bottom plates 1a and 2a, which are positioned at the free end.

  Both storage bodies 1, 2 are manufactured by sheet metal processing thin metal plates. Specific examples of the metal plate include a magnesium plate, a magnesium alloy plate, an aluminum plate, an aluminum alloy plate, a titanium plate, and a titanium alloy plate. A magnesium plate or a magnesium alloy plate is a material suitable for a portable business card case in terms of strength and lightness. If lightness is not required, such as a desktop business card holder, an iron-based material such as a stainless steel plate can be used.

  Next, details will be described with reference to FIGS. 2, (A) is a partially broken partial plan view in a closed state, (B) is a cross-sectional view taken along line BB in (A), (C) is a cross-sectional view taken along line CC in (A), (D) is a DD view of (A), (E) is an EE view cross-sectional view of (D), (F) is a separated cross-sectional view of the same location as (E), and (G) is opened. It is a BB view sectional view in a state. 3A is a partially broken plan view in a closed state, FIG. 3B is a sectional view taken along line BB in FIG. 3A, and FIG. 3C is a sectional view taken along line CC in FIG. (D) is sectional drawing in the open state.

  In the following description, the words “front” and “side” are used, which are based on the direction shown in FIG. Further, “base end” means a portion close to the hinge means 3, “tip” or “front end” means an end far from the hinge means 3, and “front and back” means a length in a direction perpendicular to the hinge means 3. . The upper and lower sides are based on a state in which the first storage body 1 is overlapped and the second storage body 2 is upward.

  The bottom plates 1a and 2a of both the storage bodies 1 and 2 are set to have dimensions that are slightly larger than the business card C in both length and width. Is formed. A label 5 made of paper or the like can be attached to the recess 4 as shown by a one-dot chain line in FIG. Arbitrary symbols / characters can be displayed on the label 5.

  Both the storage bodies 1 and 2 are basically the same form, and there is no functional relationship between the upper and lower sides and the master-slave, but by sticking the label 5 to the recess 4 of one of the storage bodies 1 and 2, The surface on which the label 5 is stretched can be defined as the upper surface. In this embodiment, it sets so that the label 5 may be stuck in the recess 4 of the 2nd storage body 2. FIG. The recess 4 also has a function of imparting high rigidity to the bottom plates 1a and 2a due to the rib effect resulting from the formation of the recess 4 and thus can prevent warping and bending.

  The long side peripheral walls 1d and 2d intersect with the bottom plates 1a and 2a at right angles in a side view, but the first short side peripheral walls 1b and 2b and the second short side peripheral walls 1c and 2c are in a side sectional view. It crosses the bottom plates 1a and 2a with an obtuse angle. Although the crossing angle is set to about 135 °, it goes without saying that the angle can be arbitrarily set.

  As the hinge means 3, for example, as shown in FIG. 3, a center curl portion 6 is bent and formed in the first storage body 1, while the first storage body 2 has two positions located on both sides of the center curl portion 6. A side curl portion 7 is formed, and one hinge pin 8 is inserted through the curl portions 6 and 7. The outer end of the side curl portion 7 is closed by the end portions of the long side peripheral walls 1d and 2d. Therefore, the hinge pin 8 is prevented from coming off without special fixing means.

  Needless to say, the arrangement of the curled portions can be arbitrarily set. It is also possible to form a hinge means without a pin by fitting the curl portions formed on both storage bodies together. Alternatively, a hinge device in which two flaps are connected by pins can be fixed to the storage bodies 1 and 2. Furthermore, it is also possible to overlap the ends of the long side peripheral walls 1d and 2d in the storage bodies 1 and 2 and connect them with hinge pins.

  When the business card case is closed, the tips of the second short side peripheral walls 1c, 2c of the storage bodies 1, 2 are set so as to be in contact with or in close contact with each other. Therefore, the business card case has a flat hexagonal shape in a side view as viewed from the axial direction of the hinge pin 8. The long side peripheral walls 1d and 2d of the storage bodies 1 and 2 have inwardly hooked stoppers 9 and 10 that hold the storage bodies 1 and 2 so that the business card C does not fall out even when the storage bodies 1 and 2 are in the downward opening posture. It is bent and formed.

  The stopper pieces 9, 10 extend long in the longitudinal direction (front-rear direction) of the long side peripheral walls 1d, 2d, but the length can be arbitrarily set. It is also possible to form in a jump. In the present embodiment, the stopper piece 9 of the first storage body 1 and the stopper piece 10 of the second storage body 1 are slightly different in length and end shape, but may be the same shape. . Moreover, in this embodiment, although the surrounding walls 1b-1d and 2b-2d which adjoin both the storage bodies 1 and 2 are isolate | separated from each other and the end surface part has faced, the adjacent surrounding walls 1b-1d, 2b- 2d may be connected integrally.

  Both storage bodies 1 and 2 need to be held in a closed state. As an example of the closed state holding means, in the present embodiment, a locking piece 11 protrudes from a portion of the first storage body 1 near the free ends of the long side peripheral walls 1d and 2d, and the locking piece 11 faces outward. On the other hand, on the long side peripheral walls 1d and 2d of the second storage bodies 1 and 2, there are formed engagement recesses 13 into which the engagement protrusions 12 of the locking pieces 11 are fitted. Yes.

  The locking piece 11 is shifted and arranged on the inner side of the card case in order to avoid interference with the long side peripheral walls 1 d and 2 d of the second storage bodies 1 and 2. The connecting portion between the side peripheral wall 1d and the locking piece 11 is a stepped portion 14 (see FIGS. 3, (E) and (F)). The step 14 is set so as to be flush with the stopper piece 9.

  The engagement protrusion 12 and the engagement recess 13 are an example of a fitting means (engaging means) that is engaged and disengaged (engaged / disengaged) against elasticity. It is also possible to form the engagement protrusion 13 on the long side peripheral wall 2d of the second storage body 2 by forming the engagement recess 13 in the locking piece 11. It is also possible to form the locking piece 11 on the long side peripheral wall 2d of the second storage body 2.

(2). Summary of the First Embodiment In the above configuration, the business card C can be put in both the storage bodies 1 and 2, but both the storage bodies 1 and 2 have peripheral walls 1b to 1d and 2b on the four sides. Since it is surrounded by ˜2d and the stopper pieces 9 and 10 are present, the business card C will not drop off even if, for example, one of the storage bodies 1 and 2 is opened downward in an open state. When inserting the business card C into the storage bodies 1 and 2, it is only necessary to insert it between the stopper pieces 9 and 10 and the bottom plates 1a and 2a in a slightly inclined posture from the portion near the free end. Since it is not necessary, it can be stored with one touch.

  For example, when stored in the first storage body 1, the second storage body 2 is in a posture of being greatly raised with respect to the first storage body 1, but the business card C is stored in the second storage body 2. Since the business card C is stopped by the second short side peripheral wall 2b so as not to face downward, there is no problem that the business card C falls out of the second storage body 2.

  When taking out the business card C from the storage bodies 1 and 2, the fingertip may be applied to the surface of the business card C and pulled toward the second short side peripheral walls 1 c and 2 c. In this case, since the second short side peripheral walls 1c, 2c are inclined at an obtuse angle with respect to the bottom plates 1a, 2a, the business card C is guided by the inner surfaces of the second short side peripheral walls 1c, 2c and smoothly drawn out. It is. For example, even if only one or two business cards C remain, they can be taken out with one touch.

  In the present embodiment, the two storage bodies 1 and 2 are overlapped. However, in this configuration, even when the maximum number of cards that can be stored in the entire card case is the same as in the case where there is only one storage body. Since the depths of the storage bodies 1 and 2 are halved, there is an advantage that the business card C can be easily taken in and out. It is also possible to use the two storage bodies 1 and 2 separately, such as putting the business card C in the first storage body 1 and the business card C received in the second storage body 2. Needless to say, although it is a business card holder, it is possible to store a card C different from the business card.

  As in FIG. 4 of Patent Document 1, it is possible to provide the closed state holding means on the second second short side peripheral walls 1c, 2c. However, since the card case is long in the direction orthogonal to the hinge means 3, there is a processing error. May cause the engagement / disengagement state to differ considerably (in particular, errors are likely to occur when the curled portions 6 and 7 are processed).

  On the other hand, when the locking piece 11 and the engagement recess 13 as the closed state holding means are provided on the long side peripheral wall 1d as in this embodiment, the distance between the two long side peripheral walls 1d and 2d is small. The variation of the interval dimension due to the error in processing accuracy can be almost eliminated, and as a result, the fit between the engagement protrusion 12 and the engagement recess 13 is not too hard or too sweet. A good match can be secured. This is one of the advantages of this embodiment.

(3). Second to third embodiments (FIG. 4)
FIG. 4A is a partially broken partial plan view of the second embodiment. This second embodiment is a modification of the first embodiment, and unlike the first embodiment, the locking piece 11 is provided at a location close to the hinge means 3. Although not shown, the engagement recesses of the long side peripheral walls 1 d and 2 d in the second storage body 2 are provided at locations close to the hinge means 3. Other configurations are the same as those of the first embodiment. In this 2nd Embodiment, since the latching piece 11 does not touch a person's fingertip, and since the latching piece 11 is not conspicuous in the open state, it has a refreshing appearance.

  4B and 4C are other examples of the closed state holding means, FIG. 4B is a partial plan view, and FIG. 4C is a sectional view taken along the line CC of FIG. In this 2nd Embodiment, the latching claw which hooks and engages with the 2nd 1st short side peripheral wall 2b of the 2nd storage body 2 from the outer side at the front-end edge of the 2nd 1st short side peripheral wall 1b in the 1st storage body 1 16 is provided integrally. The latching claw 16 has a generally bowl shape in a side sectional view, and the first first short side of the first storage body 1 due to its own elastic deformation or elastic deformation of the second first short side peripheral walls 1b, 2b. Engage / disengage from the peripheral wall 1b.

  The locking claw 16 is provided in the middle part of the second first short side peripheral wall 2b, and the second first short side peripheral wall 2b of the second storage body 2 is provided with the first first short side peripheral wall 2b. A plurality of ribs 17 extending in the transverse direction are formed to bulge. One rib 17 is formed at the position of the locking claw 16. The rib 17 is set so that the height decreases as it approaches the bottom plate 2a, and is set to be substantially the same height as the tip of the locking claw 16 at the tip of the second first short side peripheral wall 2b. is doing. Due to the presence of the rib 17, the business card C can be pulled out without being caught by the locking claw 17. The number, location, and width of the ribs 17 can be set arbitrarily.

(4). Fourth embodiment (FIG. 5)
FIG. 5 shows a fourth embodiment and is a cross-sectional view cut along a plane orthogonal to the hinge means 3. The fourth embodiment is basically the same as the first embodiment. However, as a difference from the first embodiment, the angle (crossover) formed by the first short side peripheral walls 1b, 2b with respect to the bottom plates 1a, 2a is different. (Angle) is smaller than in the first embodiment. More precisely, in the fourth embodiment, the first short side peripheral walls 1b and 2b intersect with the bottom plates 1a and 2a at an angle slightly larger than 90 degrees.

  Since the first short side peripheral walls 1b and 2b are not involved in taking in and out of the business card C, the first short side peripheral walls 1b and 2b can be set in a posture orthogonal to the bottom plates 1a and 2a. The second short side peripheral walls 1c and 2c intersect the bottom plates 1a and 2a at an angle of about 135 degrees.

  In the fifth embodiment shown in FIG. 6, the first short side peripheral walls 1b, 2b and the second short side peripheral walls 1c, 2c of both storage bodies 1, 2 are both curved outwardly in a side view. (The cross-sectional display of the hinge pin 8 is omitted). When the first short side peripheral walls 1b, 2b are curved in this way, the angle formed with the bottom plates 1a, 2a is such that the line 18 connecting the roots and the tips of the first short side peripheral walls 1b, 2b and the bottom plates 1a, 2a. The angle θ1 may be defined, or may be defined as the angle θ2 formed by the tangent line 19 of the first short side peripheral walls 1b and 2b and the bottom plates 1a and 2a in a side view. Both angles θ1 and θ2 are larger than 90 °.

(5) Sixth embodiment (FIG. 7)
Each of the above embodiments is a specific embodiment of claim 1, but FIG. 7 shows a sixth embodiment of the present invention. (A) is a perspective view in a closed state, (B) is a cross-sectional view taken along line BB in (A), and (C) is a cross-sectional view taken along line CC in (B).

  The sixth embodiment includes a main body 20 and a lid body 21. The main body 20 has a bottom plate 20a and four peripheral walls 20b to 20d and is formed in a tray shape. Similar to the first embodiment, a recess 22 is formed in the bottom plate 20a, and a long side peripheral wall 20d has A stopper piece 23 is formed. The first and second short side peripheral walls 20b, 20c intersect with the bottom plate 20a at an obtuse angle.

  On the other hand, the lid body 21 has the same planar shape as the main body 20 and is in a state close to a flat plate, and the outer periphery is composed of first and second short side pieces 21b and 21c and a long side piece 21d having a very low height. It is configured. The first short side piece 20b of the main body 20 and the first short side piece 21b of the lid 21 are connected by the same hinge means 3 as in the first embodiment. The lid 21 is also provided with a recess 24 to which labels (not shown) can be attached.

  In the sixth embodiment, as the closed state holding means of the lid body 21, the downward locking piece 25 that overlaps the inner surface of the long side peripheral wall 20 d of the main body 20 is integrally formed at the distal end portion of the long side piece 21 d of the lid body 21. Provided on the locking piece 25 is an outwardly extending engagement protrusion 26, while the long peripheral wall 20 d of the main body 20 is provided with an engagement hole 27 into which the engagement protrusion 26 is fitted.

  Since the long side piece 21c of the lid 21 and the long side peripheral wall 20d of the main body 20 are flush with each other in the closed state of the business card case, the locking piece 25 is arranged in a state of being shifted to the inside of the business card case. For this reason, the long side piece 21d and the locking piece 25 are connected via the step portion 28. In the sixth embodiment, the lid body 21 does not have a function of storing the business card C, and has a main function of closing the main body 20. The stopper piece 23 is not necessarily required.

(6). Others The present invention can be embodied in various ways other than the above embodiment. For example, in the case of a card case that stores a rectangular card like a business card, the first storage body and the second storage body, or the main body and the lid body may be connected at the long side. The planar view shape may be set according to the form of the card to be stored.

  The closed state holding means is not limited to the fitting method of the male and female engaging portions using elastic deformation, and for example, a sheet magnet or a spring member can be used. When using a spring member, it can be said that it is preferable to selectively hold the closed state and the open state by exceeding the so-called fulcrum. In the case of the first aspect, the depth and the cross-sectional shape of the first storage body and the second storage body can be changed.

It is a figure which shows 1st Embodiment, (A) is the perspective view which looked at the closed business card case from the front, (B) is the partial perspective view which looked at the closed business card case from the back, (C) is It is a perspective view in the open state. (A) is a partially broken partial plan view in a closed state, (B) is a sectional view taken along line BB in (A), (C) is a sectional view taken along line CC in (A), and (D) is (A) DD view, (E) is a cross-sectional view taken along the line E-E of (D), (F) is a separated cross-sectional view of the same part as (E), and (G) is B in an open state. FIG. (A) is a partially broken plan view in a closed state, (B) is a sectional view taken along line BB in (A), (C) is a sectional view taken along line CC in (A), and (D) is opened. FIG. (A) is a figure which shows 2nd Embodiment, (B) (C) is a figure which shows 3rd Embodiment. It is a figure which shows 4th Embodiment. It is a figure which shows 5th Embodiment. It is a figure which shows 6th Embodiment.

Explanation of symbols

C Business card as an example of card 1 1st storage body 2 2nd storage body 1a, 2a Bottom plate 1b-2d, 2b-2d Peripheral wall 3 Hinge means 9, 23 Stopper piece 12 Engagement protrusion 13 which constitutes closed state holding means 13 Engaging recess forming closed state holding means

Claims (2)

A card case in which two containers made of metal plates are connected by hinge means,
The two storage bodies are in the form of a tray having a substantially rectangular bottom plate and four peripheral walls so that square cards can be stacked and stored. The two storage bodies have their opening surfaces overlapped with each other. It is connected by the hinge means at the place of the peripheral wall of the storage body so as to be freely changeable between a closed state and an open posture in which the opening surface is separated,
Further, of the four peripheral walls constituting the two storage bodies, at least the peripheral wall opposite to the hinge means is inclined or curved so as to form an obtuse angle with respect to the bottom plate, and the four peripheral walls constituting the two storage bodies Out of the two peripheral walls extending in the direction orthogonal to the hinge means, a stopper piece is provided inwardly to hold the card so that the card does not fall even if the opening surface is faced downward.
card case. A card case made of metal,
A tray-shaped main body having a bottom plate and four peripheral walls so that square cards can be stacked and stored, and a lid body connected to the peripheral wall of the main body by hinge means to close the main body. , Of the four peripheral walls in the main body, at least the peripheral wall opposite to the hinge is inclined or curved so that the angle formed with the bottom plate is an obtuse angle,
card case.