Bit holder

Abstract

Electric or pneumatic screwdrivers use bits that are designed to fit the corresponding screws. There are various types (slotted, Phillips, hexagon, Torx, etc.). These different types also come in different sizes. This variety means that bits often need to be changed. Especially in awkward working situations (e.g., while standing on a ladder), changing bits can be not only cumbersome but even dangerous, as both hands are often required. While existing bit holders allow one-handed changing, the replacement bit must be stored in a box or in a pocket on clothing or something similar. This complicates changing the bit. A one-handed change option while simultaneously storing multiple bits on the bit holder would be a great advantage for the user. The described bit holder enables very easy one-handed bit changes. At least three bits can be accommodated. Use is self-explanatory and extremely simple. Various options minimize the risk of injury.

Description

[0001] The bit holder (1) has three rigid or interchangeable bits (2) that are arranged in a plane at an angle of 120° to each other. Opposite each bit there is a socket (3) (e.g. square socket) for attaching the bit holder to the adapter (4). The adapter (4) is fastened to the chuck of the screwdriver. This is usually done using a hexagon, but another shape is also conceivable. The bit is changed by pulling the bit holder (1) off the adapter (4), turning the bit holder (1) and reattaching the bit holder (1). While using a bit (2) that is in line with the screwdriver axis, the other two bits (2) point away from the screwing point. This makes it possible to hold a screw by the bit with your hand without injuring yourself.

[0002] To further minimize the risk of injury, the bit holder can be designed in a ball shape (5). When the ball rotates, there are no rotating edges that could injure the user.

[0003] Another option is the use of a protective cover (6). This cover is also round and can be attached to the adapter (4). The two unused bits are covered by the cover (6). A further safety improvement is the inclusion of a groove (7) in the protective cover, into which the unused bits disappear.

[0004] When using interchangeable bits, they can be axially secured in the bit holder using a spring ball or a magnet. The adapter can also be secured in these ways.

[0005] Optionally, the bits (2) can be countersunk into the body of the bit holder using extended receptacles (8). This creates a smooth spherical surface. This makes it possible to create two additional bit slots, even if they do not point away from the screwing location. In this case, the protective cover (6) is omitted. The bits are pushed out of the countersunk position when the bit holder is attached to the adapter (4) and can be used immediately. When the ball is removed from the adapter, a magnet (9) installed in the adapter (4) causes the bit to be retracted into the countersunk position.

[0006] The adapter can be equipped with an additional fixed bit (10) above the (square) socket, which remains within the dimensions of the socket (11). To use this bit, the bit holder must be removed. This option allows for the use of up to 6 bits.

Claims

[1] Bit holder, characterized by that the bit holder has three bits that are at an angle of 120° to each other and each have a holder for an adapter opposite the bits. [2] Bit holder according to claim 1, characterized by that the bit is changed by pulling the bit holder off the adapter, turning the bit holder and reattaching the bit holder. [3] Bit holder according to claim 1, characterized by that the bits are rigidly or replaceably attached. [4] Bit holder according to claim 1, characterized by that the bit holder can be designed as a ball to reduce the risk of injury. [5] Bit holder according to claim 1, characterized by that a protective cover can be attached to the adapter to cover the protruding bits. [6] Bit holder according to claim 1, characterized by that the adapter has an additional bit that can be used after removing the bit holder. [7] Bit holder according to claim 1, characterized by that the interchangeable bits and the adapter can be secured axially with a spring ball or a magnet. [8] Bit holder according to claim 1, characterized by that with extended bit holders it is possible to countersink the bits in the bit holder [9] Bit holder according to claim 1, characterized by that the adapter pushes the bit out of the extended bit holder when plugged in. [10] Bit holder according to claim 1, characterized by that the adapter has a magnet at the tip that pulls the bit back into the extended bit holder when removed [11] Bit holder according to claim 1, characterized by that with extended bit holders and countersunk bits, two additional slots are possible due to the smooth spherical surface for bits that do not point away from the screwing point but do not pose a risk of injury due to the countersunk position.

Images