Frequently a user may have several sets of keys. In various settings, it may be desirable to quickly attach and detach sets of keys from each other. Speed of detachment is important to the user, however, a secure attachment is important as well. It may be difficult to combine both rapid detachment and secure detachment.
In one embodiment, a key chain includes a bisected hollow cylinder, one side of the bisected hollow cylinder forming a first side and another side forming a second side. The key chain further includes a first holder, the first holder having a first half cylindrical body, the first holder located inside of the first side of the bisected hollow cylinder, such that a first outer radius of the first holder is coextensive with a first inner radius of the second side when interconnected. The key chain further includes a second holder, the second holder having a second half cylindrical body, the second holder located inside of the second side of the bisected hollow cylinder, such that a second outer radius of the second holder is coextensive with a second inner radius of the first side when interconnected. The key chain further includes a first magnetic material and second magnetic material, the first magnetic material located in the first holder and the second magnetic material located in the second holder, the first magnetic material and the second magnetic material oriented such that when the first side and the second side are proximate to forming a complete cylinder, the first holder is guided to the second holder through magnetism between the first magnetic material and the second magnetic material. Alternatively, first length of the first holder is less than a second length of the bisected hollow cylinder. In one alternative, the first holder is located at a first end of the first side and a second end of the first side includes a first lip, the first lip oriented to rest on a first ridge of the second holder when the first side and the second side are engaged. Alternatively, a third length of the second holder is less than a fourth length of the bisected hollow cylinder and the second holder is located at a third end of the second side and a fourth end of the second side includes a lip, the lip oriented to rest on a ridge of the second holder when the first side and the second side are engaged. In another alternative, the key chain further includes a keyring attached to the first holder. Alternatively, the first side and the first holder combination and the second side and the second holder combination are identical.
In another embodiment, connection device with automatic alignment, the connection device includes a first side and a second side, the first side having a first complementary receiver for a first end of the second side. The connection device further includes a first magnetic material and a second magnetic material, the first magnetic material located in the first side, the second magnetic material located in the second side, the first magnetic material and the second magnetic material oriented such that when the first side and the second side are proximate, the first end of the second side is guided into the first complementary receiver through magnetism. The first complementary receiver includes a first lip and the second side includes a first ridge for receiving the lip such that when the first end of the second side is guided into the first complementary receiver the lip engages with the ridge, and engagement of the ridge with the lip prevents the separation of the first side and the second side at least in a first direction. Alternatively, the second side has a second complementary receiver for a second end of the first side; the first magnetic material and the second magnetic material oriented such that when the first side and the second side are proximate, the second end of the first side is guided into the second complementary receiver through magnetism and the second complementary receiver includes a second lip and the second side includes a second ridge for receiving the first lip such that when the second end of the first side is guided into the second complementary receiver the second lip engages with the second ridge, and engagement of the second ridge with the second lip prevents the separation of the first side and the second side at least in a second direction.
In one alternative, the first side and the second side are identical. In another alternative, the first end and the second end are cylindrical, such that a first portion of the second end is a first half-cylinder and the first complementary receiver has a shape that covers and matches the first half-cylinder and a second portion of the first end is a second half-cylinder and the second complementary receiver has a shape that covers and matches the second half-cylinder. Alternatively, the first complementary receiver extends past the first end and the second complementary receiver extends past the second end, such that when the first and second side are engaged, ends of the first end and the second end are in contact. In another alternative, at least one of the first and second side include a tab for assisting in separating the first side and the second side. Alternatively, at least one of the first magnetic material and the second magnetic material is a permanent magnet. In another alternative, at least one of the first magnetic material and the second magnetic material is a magnetizable material and not a permanent magnet. Alternatively, the first side includes a key ring. In another alternative, the key ring is rotationally mounted to the first side. Alternatively, the second ridge is adjacent to the key ring, such that when the second lip is engaged with the second ridge they form an engaged pair that resists separation of the first side from the second side when the key ring is pulled on.
In one embodiment, a method of connecting end of a keychain includes providing a key chain. The key chain includes a bisected hollow cylinder, one side of the bisected hollow cylinder forming a first side and another side forming a second side; a first holder, the first holder having a first cylindrical body, the first holder located inside of the first side of the bisected hollow cylinder, such that a first outer radius of the first holder is coextensive with a first inner radius of the second side when interconnected; a second holder, the second holder having a second cylindrical body, the second holder located inside of the second side of the bisected hollow cylinder, such that a second outer radius of the second holder is coextensive with a second inner radius of the second side; and a first magnetic material and second magnetic material, the first magnetic material located in the first holder and the second magnetic material located in the second holder. The method includes moving the first magnetic material into a position proximate to the second magnetic material. The method includes connecting the first side and the second side. The method includes forming a complete cylinder, wherein the first holder is guided to the second holder through magnetism between the first magnetic material and the second magnetic material. Alternatively, the key chain further includes a keyring attached to the first holder and the method further includes attaching a key to the keyring. In one alternative, the first side and the first holder combination and the second side and the second holder combination are identical.
Certain terminology is used herein for convenience only and is not to be taken as a limitation on the embodiments of the systems and methods for a connection device with magnetic alignment of a lip and ridge (CDMA). In many embodiments, the CDMA includes a bisected body forming two sections. The term bisected does not necessarily mean in half (to form two equal sides), however the bisection may be in half. Furthermore, the bisected body may be cut, or each half may be formed separately. Each section (side) of the bisected body has a void portion and an internal holder portion. The void portion is shaped to receive the internal holder portion, such that the bisected body may be reformed. In each internal holder portion a magnetic material is housed. The magnetic material in each section aligns with the magnetic material in the other section via magnetic attraction, such that the bisected body is aligned to be reformed. Additionally in some configurations, the end of the void portion on each section may have a lip on one end that fits onto the holder portion to further connect the sections in a removable, but secure fashion. Additionally in some configurations, the internal holder portions are located on one end of each section. The internal holder portion includes a keychain connector at one end, which includes a keyring. The keychain connector may rotate and is rotationally connected to the internal holder. Since the key chain connector are located on either end, the lip fitting on the holder is oriented to resist movement in the primary lateral movement direction of the key rings. In some configurations, the bisected body is a geometric shell open at either end. The shape of the geometric shell may be cylindrical, prismatic, or other shape. The prismatic shape has an internal perimeter. The internal holder (each one) is located in one section such that when the sections are combined the internal holder juts into the other section. The internal holder is shaped such that its external perimeter matches the internal perimeter of the other section for a secure fit. In many configurations, the end of the geometric shell of each section of the body that is opposite the internal holder is open and includes the lip. Therefore, when it aligns with the opposite section, which is essentially a flipped version of the first section, the lip interfaces with the internal holder of the opposite side to prevent easy separation. The magnetic material (which one or more of which may be magnets) are in the internal holders and align in the center of the device to hold the sides together. Additionally, in some configurations the sections may have tabs to assign in separation. The tabs may be located along the bisected cut between the two sections. In many configurations, the two sections of the bisected body are identical and flipped so they may align and combine. In many configurations, the device is a keychain. In many alternatives, it may be any other item of which the function is improved via the magnetic interconnection system. Examples, include, but are not limited to, connectors for toys, connectors for flashlights, connectors for pens or pencils, connectors for medical devices, connectors for tools, rapid exchange of tool tips, etc.
Various different arrangements of the CDMA are possible. In many embodiments, the embodiments include a shape that may be bisected along its length, such that two halves are formed. Each half has two parts, one which is hollow such that a void or receiver area is formed and the other which holds a magnet and is shaped to fit into the void/receiver area (holder). This makes up the connector, such that a bisected shape with a void and holder may be fitted with the identical other half and held together via magnetism. Additionally, although in many embodiments two magnets are used, in alternatives one may not be a magnet but merely a material attracted to the other magnet. Generally, magnetic material includes material that is either a magnet or a material attracted by a magnet. Additionally, in many configurations, tabs for separation are included. Finally, the lips on the ends that fit over the holder pieces onto a ridge of the holder provide greater resistance to separation. In use, the magnets and the shape of such devices lead to automatic alignment, which greatly eases secure connection. Also, although the device is described in the context of a keychain the device may be used in other contexts. In some embodiments, the various sides of the device may be connected to each other and then one may be detached and connected to a third side that is identical or different from the previously interconnected side. For example, a base with a holder might be provided having one half of the CDMA. The second half might have a tool tip. A third half might have another tool tip that could be exchanged.
While specific embodiments have been described in detail in the foregoing detailed description, it will be appreciated by those skilled in the art that various modifications and alternatives to those details could be developed in light of the overall teachings of the disclosure and the broad inventive concepts thereof. It is understood, therefore, that the scope of this disclosure is not limited to the particular examples and implementations disclosed herein but is intended to cover modifications within the spirit and scope thereof as defined by the appended claims and any and all equivalents thereof.