One-Hand Key Card Case
The key card case addresses the limitations of existing designs by providing integrated, one-handed access, secure storage, and expandable compartments, enhancing usability and reducing stress and loss risk for both right- and left-handed users.
Patent Information
- Application Number
- JP2025003773U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-10-31
AI Technical Summary
Existing key card cases lack integrated storage solutions that allow easy one-handed access, prevent protrusion of excess fasteners, accommodate multiple keys, provide clear visibility, and cater to both right- and left-handed users, while ensuring secure storage and easy attachment to bags or clothing.
A key card case design with a main body that can be held in one hand, separate storage spaces for keys and other items, a band and ring system for keys, expandable storage, and adjustable attachment options for easy access and visibility, along with dividers and additional compartments for organization.
Facilitates easy one-handed operation, reduces stress and loss risk, increases storage capacity, and enhances usability for both right- and left-handed users, making it convenient for daily use and emergencies.
Smart Images

Figure 0003254190000001_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to a key card case for storing keys, cards, bills, coins, etc. [Background technology]
[0002] There are key and card cases that have separate storage spaces for keys and cards, bills, coins, etc.
[0003] There are key card cases that allow you to access your keys with just one hand.
[0004] There are key card cases that do not have clasps that protrude from the case when there are more key clasps than keys to store.
[0005] There are key card cases available that can store a large number of keys for common doors and other devices.
[0006] There are key card cases that allow you to view and sort stored keys. [Prior art documents] [Patent documents]
[0007] [Patent Document 1] Utility model registration No. 3220819 [Patent Document 2] Utility model registration No. 3206706 [Patent Document 3] Utility model registration No. 3201861 [Patent Document 4] Patent Publication No. 2015-150069 [Patent Document 5] Patent Publication No. 2012-125475 [Patent Document 6] Jipkaihei 05-083244 Summary of the Invention [Problem to be solved by the invention]
[0008] Previous key card cases have had some of the following functions, but none have all of them. The storage space for keys is separate from the storage space for cards, bills, coins, etc. -Easily insert and remove keys with just one hand. When there are more key fasteners than keys to store, the fasteners that do not store keys will not protrude from the case. -Can store a large number of keys for general doors, etc. -You can view and select stored keys. The purpose of this invention is to provide a key card case that has all of the above functions.
[0009] In addition to the above, the purpose is to provide a key card case that can add the following functions. -You can easily take out a single card with one hand. -Key storage space can be increased. You can attach this case to your bag or clothes using a string. - Increased storage space for cards, bills, coins, etc. By adding dividers or openable bags to the storage space for cards, bills, coins, etc., or by adding an additional main body, cards, bills, coins, etc. can be stored separately. -Can be shaped to suit the characteristics of both right-handed and left-handed users. [Means for solving the problem]
[0010] This device makes the body of the device large enough to be easily held in one hand, making it easy to insert and remove keys and take out cards with one hand.
[0011] This invention separates the storage space for keys from the storage space for cards, bills, coins, etc., so that cards, bills, coins, etc. do not fall out when the key is inserted or removed, and so that the key does not fall out when the card, bill, coin, etc. is inserted or removed.
[0012] In order to make it easier to take keys in and out with one hand, this device connects the keys to the main body with a band and ring, covers the keys with a cover, attaches a fastener to the cover and the main body, and makes the fastener strong enough to open and close with the fingers of one hand, and shapes the cover so that the keys can be stored securely with a single fastener.
[0013] This device stores keys by passing them through multiple key holes with one ring so that when the number of key fasteners becomes greater than the number of keys to be stored, the fasteners of unused keys do not protrude from the main body and get in the way.
[0014] This invention sets the size of the ring so that it can store an increasing number of keys for general doors, etc.
[0015] In this device, the cover covering the keys is opened until all the stored keys can be seen so that the stored keys can be viewed and selected.
[0016] In this invention, a pocket for inserting a card may be provided on the opposite side of the main body where the key is stored so that the card can be removed with one hand.
[0017] In this invention, in order to store keys separately or to store multiple keys, an additional key storage space may be provided on the opposite side of the main body where the keys are stored.
[0018] In this invention, in order to make it possible to easily attach the key card case to a bag, clothing, etc., a loop-shaped string can be attached to the main body, which can be attached to a bag, clothing, etc. using a string or carabiner.
[0019] In this invention, the width of the main body can be expanded or the main body can be expanded to store more cards, bills, coins, etc.
[0020] In this invention, in order to make it possible to quickly find specific cards, bills, coins, etc., dividers or openable bags can be attached to the storage space of the main body, or multiple main bodies can be added to separate the storage spaces.
[0021] In this invention, the location of the key storage compartment may be changed so that both right-handed and left-handed people can easily insert and remove the key with one hand. [Effects of the Invention]
[0022] With the spread of smartphones and other devices, the number of opportunities to use keys, cards, bills, and coins is decreasing, but there are still situations in daily life where they are needed, and not being able to easily take them out when you need them can be stressful. This device is small enough to be easily held in one hand, fits into small spaces, and can be attached to clothing or a bag, making it easy to carry and take out, reducing the stress of having to search for keys, cards, bills, coins, etc. when needed.
[0023] This device allows you to insert and remove the key and open and close the door even when you only have one hand available, so even when you can't put your luggage down because the ground is wet due to rain, when you are holding a sleeping child, or when you are caring for a parent and only have one hand available, you can open and close the door with just one hand, which has the effect of reducing stress.
[0024] This device allows the key to be easily inserted and removed with one hand, reducing the amount of daily keystrokes and reducing hassle.
[0025] This device is small enough to be easily held in one hand and can be attached to clothing or a bag with a string, making it easy to carry, making it easy to keep on your person at all times and useful in emergencies.
[0026] In this device, the storage space for keys is separate from the storage space for cards, bills, coins, etc., so cards, bills, coins, etc. will not fall out when taking out or putting in the keys, and the keys will not fall out when taking out or putting in the cards, bills, coins, etc., which reduces the risk of losing them.
[0027] This device allows the case to be easily attached to a bag, clothing, or other item using a loop such as a string or carabiner, making it easy to find and reducing the risk of loss.
[0028] This invention increases the storage space of the main body, which has the effect of resolving the complaints of people who have been dissatisfied with the storage capacity of previous key card cases.
[0029] This invention allows you to sort and store cards, bills, and coins by attaching dividers and opening / closing bags inside the main body or by adding additional main bodies, which has the effect of making it possible to quickly find the item you are looking for.
[0030] This device allows the key storage position to be changed for right-handed and left-handed users, eliminating the inconvenience of using one's dominant hand. [Brief explanation of the drawings]
[0031] [Figure 1] This is a diagram of a right-handed version of this case with the cover for storing keys open. [Figure 2] FIG. 2 is a view showing the state in which the cover of FIG. 1 is closed. [Figure 3] FIG. 3 is a view from the opposite side of FIG. 2. [Figure 4] This is a view of Figure 2 as seen from the side where the main body has an opening and closing function. [Figure 5] Figure 3 shows a pocket with cards coming out from the short side of the main body. [Figure 6] This is a view of Figure 5 as seen from the side where the main body has an opening and closing function. [Figure 7] Figure 3 shows a pocket with cards coming out from the long side of the main body. [Figure 8] This is a view of Figure 7 as seen from the side where the main body has an opening and closing function. [Figure 9] Figure 4 shows the installation with the key storage space added on the opposite side of the main body. [Figure 10] Figure 1 shows a string attached to connect to a bag, clothing, etc. [Figure 11] Figure 4 shows a string attached to connect to a bag, clothing, etc. [Figure 12] FIG. 5 is a view showing the body of FIG. 4 in an expanded width. [Figure 13] FIG. 5 is a view of the main body of FIG. 4 with an internal partition attached. [Figure 14] 13 from the opposite side of the key storage space. [Figure 15] Figure 4 shows the addition of two units. [Figure 16] This is a diagram showing the opening and closing mechanism of Figure 4 attached to the inside of the side of the main body. [Figure 17] This is a side view of the main body having an opening and closing function shown in FIG. 16. [Figure 18] This is a diagram of Figure 1 adapted for left-handed use. [Figure 19] FIG. 19 is a view of the state in which the cover of FIG. 18 is closed. [Figure 20] FIG. 19 is a side view of FIG. 18, showing the key storage space; [Figure 21] This is a view of Figure 18 as seen from the side where the main body has an opening and closing function. DETAILED DESCRIPTION OF THE INVENTION
[0032] The shape of the main body 1 of the present invention is 90 to 140 mm in length, 60 to 100 mm in width, and 5 to 20 mm in depth so that a standard credit card can be easily inserted and removed and held in one hand.
[0033] A zipper 8 is attached to the long side of the main body 1 of the present invention as an opening and closing function for inserting and removing cards, bills, coins, etc. Although a zipper is preferable for this opening and closing function, hooks, buttons, Velcro (registered trademark), magnets, etc. may also be used.
[0034] As shown in Figure 1, a ring-shaped band 5 is attached to the center of the short side of the main body 1 of this device, an openable ring 6 is attached to the band 5, the ring 6 is passed through holes in multiple keys 7, and the keys 7 are covered with the cover 2 from above. By closing the fastener 3 of the cover 2 and the fastener 4 of the main body 1, a space for storing keys 7 is created that is separate from the storage space for cards, bills, coins, etc.
[0035] The preferred shape of the cover 2 of this device is an isosceles triangle with the corners between the sides of equal length cut off and a portion of a circle added to the cut-off part, as shown in Figure 1. However, depending on the materials of the main body 1 and cover 2, and the size and number of keys 7 to be stored, the shape may vary as long as the side with the fastener is shorter than the side attached to the main body 1. In addition, the cover 2 is attached so that it can be opened by more than 180 degrees from the main body 1 with one hand so that the stored keys can be viewed and selected.
[0036] The materials for the body 1, cover 2, and band 5 of this invention are preferably synthetic fibers such as nylon and polyester, which are strong, durable, and lightweight, but as long as there are no problems with strength, durability, or weight, natural fibers such as cotton, recycled fibers such as rayon, synthetic resin films such as vinyl, natural leather, synthetic leather, etc. may also be used. However, the cover 2 is preferably made of a stretchy material so that the keys 7 are tightly attached to the cover 2 and do not come out of the cover 2. Furthermore, the surface of the main body 1 opposite to the surface storing the keys 7 may be made of a mesh or transparent material so that the stored contents can be seen from the outside.
[0037] The ring 6 of the present invention is preferably a circular metal ring with an opening and closing function, and has a diameter of 20 to 40 mm so that it can easily store up to five keys 7 for a typical door or the like. The width of the band 5 for fastening the ring 6 is set to 5 to 25 mm so that the ring 6 is stable. However, the ring 6 may be oval, figure eight, or other shapes as long as it allows the key to be inserted and removed, and may be made of synthetic fibers such as nylon or polyester, natural fibers such as cotton, recycled fibers such as rayon, synthetic resin films such as vinyl, natural leather, synthetic leather, or the like. Furthermore, the band 5 may be in the form of a string or the like, instead of a band, as long as it has a ring shape to which a ring can be attached.
[0038] The fasteners 3 and 4 of the present invention are preferably hooks strong enough to be opened and closed with the fingers of one hand, but buttons, magnets, Velcro (registered trademark), etc. that can perform the same function may also be used.
[0039] In this invention, as shown in Figures 5 to 8, a pocket 9 may be attached to the side of the main body opposite to the side storing the key 7 so that the card 10 can be removed by rubbing it up with the fingers of one hand. The pocket 9 may be shaped so that the card 10 can be dispensed from the short side of the main body 1 or from the long side. In either case, it is preferable that the card 10 can be dispensed from 5 to 25 mm.
[0040] In this invention, in order to store a large number of keys 7 in a divided manner, additional spaces for storing keys 7 may be provided on both sides of the main body 1 as shown in FIG.
[0041] In this device, the case can be attached to a bag, clothing, etc. by passing a loop-shaped object such as a string or carabiner through it, so a loop-shaped string 11 can be attached to the top of the belt 5 of the main body 1, as shown in Figures 10 and 11. The string 11 may be in the form of a band or the like, as long as it has a loop shape that allows a loop-shaped object such as a string or a carabiner to be passed through. The material of the string 11 is preferably a synthetic fiber such as nylon or polyester, which is strong, durable, and lightweight, but as long as there are no problems with strength, durability, or weight, natural fibers such as cotton, recycled fibers such as rayon, synthetic resin films such as vinyl, natural leather, synthetic leather, etc. may also be used.
[0042] In this invention, the width of the main body 1 may be widened as shown in FIG. 12 in order to increase the storage space for cards, bills, coins, etc.
[0043] In this invention, in order to make it easier to quickly find the desired item among the cards, bills, coins, etc. stored in the main body 1, dividers 12 and 13 may be attached inside the main body 1 as shown in Figures 13 and 14. Also, to prevent coins and other items from falling out, the dividers 12 and 13 may be bag-like with a zipper or the like.
[0044] In this invention, in order to make it easier to quickly find the desired item from among the stored cards, bills, coins, etc., multiple items of the same shape as the main body 1 may be attached, as shown in Figure 15.
[0045] In the present invention, the opening and closing function of the zipper 8 of the main body 1 may be attached to the inside of the side of the main body 1, instead of the long side of the main body 1, as shown in Figs.
[0046] In this invention, for left-handed users, the cover 2, fasteners 3 and 4, band 5, ring 6, and zipper 8 shown in Figures 1 to 4 for right-handed users may be attached to the opposite side of the main body 1, as shown in Figures 18 to 21, so that the key 7 can be easily inserted and removed using only the left hand.
[0047] In this invention, the main body 1 may be equipped with an anti-skinning function.
[0048] Although the embodiments of the present invention have been described above, the embodiments of the present invention are not limited to those described above. [Industrial Applicability]
[0049] With the spread of smartphones and other devices, the number of opportunities to use keys, cards, bills, and coins is decreasing, but there are still situations in daily life where they are needed, and not being able to easily take them out when you need them can be stressful. This device is small enough to be easily held in one hand, fits into small spaces, and can be attached to clothing or a bag, making it easy to carry and take out, so it can be used as a key card case that reduces the stress of searching for keys, cards, bills, coins, etc. when needed.
[0050] This invention allows you to take out and put in keys and open and close doors even when you only have one hand available, so it can be used as a key / card case that reduces stress by allowing you to open and close doors with just one hand, even when the ground is wet due to rain and you cannot put your luggage down, when you are holding a sleeping child, or when you are caring for a parent and only have one hand available.
[0051] This device can be used as a key card case, which reduces the hassle of using keys on a daily basis, as it allows you to easily take keys in and out with one hand.
[0052] This device is small enough to be easily held in one hand and can be attached to clothing or a bag with a string, making it easy to carry and easy to keep with you at all times.It can also be used as a key card case that can be used in emergencies.
[0053] This device has separate storage spaces for keys and cards, bills, coins, etc., so cards, bills, coins, etc. will not fall out when taking out or putting in keys, and keys will not fall out when taking out or putting in cards, bills, coins, etc., so it can be used as a key / card case that reduces the risk of losing them.
[0054] This invention can be used as a key card case that is easy to find and reduces the risk of losing it, as it can be easily attached to a bag, clothing, etc. using a loop such as a string or carabiner.
[0055] This invention can increase the storage space of the main body, so it can be used as a key card case that will solve the complaints of people who have been dissatisfied with the storage capacity of previous key card cases.
[0056] This invention allows you to sort and store cards, bills, and coins by adding dividers or opening and closing bags inside the main body, or by adding more main bodies, so it can be used as a key / card case where you can quickly find what you are looking for.
[0057] This device can be used as a key card case that can be used by right-handed and left-handed people, eliminating the inconvenience of using one's dominant hand, as the key storage position can be changed for both right-handed and left-handed people. [Explanation of symbols]
[0058] 1: Main unit 2:Cover 3: Fastener 4: Fastener 5: Obi 6: Ring 7: Key 8: Zipper for taking out cards, bills, coins, etc. 9: Card storage pocket 10: Card 11: A string to attach the main body to a bag or clothing through a string or carabiner. 12: Dividers for separating stored cards, bills, coins, etc. 13: Dividers for separating stored cards, bills, coins, etc.
Claims
[Claim 1] It is a case (storage item) that can hold and remove keys, cards, bills, coins, etc. In order to prevent cards, bills, coins, etc. from falling out when the key is taken out or put in, and to prevent the key from falling out when the card, bill, coin, etc. is taken out or put in, the storage space for the key and the storage space for the card, bill, coin, etc. are separated, and for this purpose, the cards, bills, coins, etc. are stored in a bag-shaped rectangular main body that can be opened and closed, and the key is connected to the main body by attaching a ring-shaped band to the side of the main body, passing an openable ring through the band, and passing the ring through a hole in the key, and the connected key is covered with a cover attached to the main body, and the main body and the cover are joined together with a fastener attached to the cover, thereby storing the key, In addition, in order to make it possible to easily remove the key from the case and insert it into a keyhole with only one hand, and to easily store the removed key in the case with only one hand, the fasteners on the main body and the cover are combined into one, and in order to stabilize the cover with only one fastener, the shape of the cover is made shorter on the side with the fastener than on the side attached to the main body, and the ring and band connecting the key are attached to the center of the main body so that the cover can be opened with one hand and the key can be immediately grasped from that state. Furthermore, in order to prevent clasps that do not store keys from protruding from the case when there are more clasps for the keys than the number of keys to be stored, the ring that holds the keys is single and passes through multiple key holes, and the size of the ring is set so that even if an increase in keys for general doors and the like can be stored, the cover that covers the keys can be opened with one hand to a position where the keys can be viewed and selected. A key card case characterized by the above.
Citation Information
Patent Citations
Double-sided storage key chain with business card and card holder
JP1993083244U
Key case used with one hand
JP2012125475A
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JP2015150069A
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