The present invention relates generally to hand tools, and more particularly to a one-hand bit releasing hand tool.
For general hand tools, particularly one that allows replacement of bits, when there is already a bit of a specific type (such as a slotted bit) while replacement with a bit of a different type (such as a Phillips bit) is being attempted, the process of replacement is general such that one hand holds the hand tool, while another hand holds an outer circumferential surface of the bit that is connected to the hand tool and a force is applied to pull out and separate the slotted bit from the hand tool, and then the slotted bit is placed into a tool box and a Phillips bit is taken out and put into connection with the hand tool. Such a process of bit replacement is not very lengthy, yet tedious. Operation smoothness can be further enhanced by simplifying or shortening the process of bit replacement for hand tools, and the labor loading for such an operation could also be reduced.
Further, it is common for a hand tool operator to carry out an operation in an oil-staining environment, and it is easy for the oil to attach to the hands of the operator or the bits. In case that a hand with attached thereto holding a tool bit or the bit itself is covered with the oil, the frictional force that the hand holds the bit is insufficient (meaning the bit cannot be held in a secured manner, and can be easily skid) so that the operator cannot remove the bit from the hand tool, making it hard for the operator to replace the bit.
Further, it is also often that the operator who operates the hand tool hold the hand tool with one hand, while holding another object with another hand, and consequently, this becomes a problem as replacing the bit is hard to perform.
In view of the above, in order to improve the problems of poor operation smoothness resulting from the lengthiness of the conventional hand tool bit replacement process, infeasibility of bit replacement carried out with one single hand for the conventional hand tools and un-performability of bit replacement for situations of both hands holding objects, and hard detachment of a bit from a hand tool in situations that either hands or the bits are attached with oil stains, the present invention aims to provide a one-hand bit releasing hand tool, which is applicable to a bit, wherein the bit has ends that are solid. The one-hand bit releasing hand tool mainly comprises: a hand tool main body, which comprises a grip section and a first drive section connected to one end of the grip section, the first drive section being inwardly recessed, in one side thereof, to form a first drive hole, the first drive section being inwardly recessed, in an opposite side thereof, to form a receiving hole, the receiving hole and the first drive hole being coaxial and in communication with each other, a stepped portion being formed at a connection between hole walls of the first drive hole and the receiving hole; and a positioning and releasing assembly, which comprises a positioning member and a releasing member, the positioning member being disposed in the receiving hole of the hand tool main body and in contact with and supported on the stepped portion to apply an action force on the bit placed into the first drive hole for positioning, the releasing member being disposed in the receiving hole and reciprocally movable between a positioning position and a releasing position upon being acted on by an external force; wherein when the bit is placed into the first drive hole, the releasing member is caused to move from the releasing position to the positioning position; and when the releasing member is acted upon by the external force to move from the positioning position to the releasing position, the releasing member resists the action force of the positioning member to cause the bit to move out of and detach from the first drive hole. As such, the present invention allows an operation of bit replacement that is performed in a manner of being not contacting the bit and manipulated with one single hand, so as to simplify a process of operation, enhance operation smoothness, and improve operation easiness.
The present invention also provides a one-hand bit releasing hand tool, which is applicable to a bit, wherein the bit has ends that are solid. The one-hand bit releasing hand tool mainly comprises: a hand tool main body, which comprises a wrenching member and a ratchet base, the wrenching member comprising a grip section, a first drive section connected to one end of the grip section, a mounting hole formed in and penetrating through the first drive section, a push bar being arranged on an outside surface of the first drive section, a control member being provided on a hole wall of the mounting hole and in operative connection with the push bar, the ratchet base being disposed in the mounting hole, a driven member being arranged on an outer circumferential surface of the ratchet base, the driven member being in engagement with the control member to control a rotation direction of the ratchet base, the ratchet base being inwardly recessed, in one side thereof, to form a first drive hole, the first drive section being inwardly recessed, in an opposite side thereof, to form a receiving hole, the receiving hole and the first drive hole being coaxial and in communication with each other, a stepped portion being formed at a connection between hole walls of the first drive hole and the receiving hole; and a positioning and releasing assembly, which comprises a positioning member and a releasing member, the positioning member being disposed in the receiving hole of the hand tool main body and in contact with and supported on the stepped portion to apply an action force on the bit placed into the first drive hole for positioning, the releasing member being disposed in the receiving hole and reciprocally movable between a positioning position and a releasing position upon being acted on by an external force; wherein when the bit is placed into the first drive hole, the releasing member is caused to move from the releasing position to the positioning position; and when the releasing member is acted upon by the external force to move from the positioning position to the releasing position, the releasing member resists the action force of the positioning member to cause the bit to move out of and detach from the first drive hole. As such, the present invention allows an operation of bit replacement that is performed in a manner of being not contacting the bit and manipulated with one single hand, so as to simplify a process of operation, enhance operation smoothness, and improve operation easiness.
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Thus, the above provides a description to the components of the one-hand bit releasing hand tool 100 according to the first preferred embodiment of the present invention and also assembly thereof, and in the following, unique advantages of operation thereof are provided:
As shown in
Next, after the bit 90 enters the first drive hole 121, the bit 90 is acted upon by an action force of the positioning member 21 (meaning a magnetic attractive force attracts and holds the bit 90) and thus positioned, so that the bit 90 is in contact with and supported on the positioning member 21, and also pushes upwards the push section 222 of the releasing member 22 (as shown in
When the operator attempts to replace the bit or to detach the bit from the present invention, the operator uses the hand that grips and holds the hand tool main body 10 by reaching out one of the fingers to press on the press section 223 of the releasing member 22 (as shown in
Thus, the present invention allows for one hand operation for both connecting a bit with the present invention or detaching a bit from the present invention. The process that requires manipulation is simplified, so that operation smoothness is enhanced. Further, there is no need to put down any object from the other hand, so that the easiness of operation is enhanced. Even though the hands or the bit are stained with oil, since there is no need to contact with bit with the hands, there is no difficulty for the operation of detaching the bit.
Referring to
In the embodiment, the hand tool main body 40 comprises a wrenching member 41, a ratchet base 42, and a ratchet base C-clip 43. The wrenching member 41 comprises a grip section 411, a first drive section 412 integrally combined with one end of the grip section 411, and a second drive section 413 integrally combined with an opposite end of the grip section 411. The first drive section 412 comprises a mounting hole 414 penetrating through two opposite sides (top and bottom sides) thereof. A push bar 415 is provided on an outer surface of the first drive section 412. A control member 416 is provided on a hole wall of the mounting hole 414 and is in operative connection with the push bar 415. A mounting hole circumferential groove (not shown in the drawings) is formed in the hole wall of the mounting hole 414 and adjacent to the bottom side. The ratchet base 42 is disposed in the mounting hole 414. A driven member 421 and a ratchet base circumferential groove 422 are arranged on an outer circumferential surface of the ratchet base 42. The driven member 421 is engagement with the control member 416, so that an operator may drive the control member 416 by means of the push bar 415 to apply an action to the driven member 421, thereby achieving an effect of controlling a rotation direction of the ratchet base 42. The ratchet base C-clip 43 is located between the mounting hole circumferential groove and the ratchet base circumferential groove 422 in order to prevent the ratchet base 42 from detaching from and separating from the mounting hole 414. The ratchet base 42 is formed with a first drive hole, a receiving hole, a stepped portion, and a receiving hole circumferential groove similar to those of the first embodiment, such that the receiving hole receives the positioning and releasing assembly 50 and the constraining device 60 to dispose therein and the constraining device 60 does not extend out of the receiving hole, and the first drive hole receives the bit 90 to place therein. In the instant embodiment, the positioning and releasing assembly 50 and the constraining device 60 are similar to those of the first embodiment, and repeated description will be omitted.
In this way, the present invention realizes the same effects as those of the first embodiment, and may also control the direction of rotation to further improve the operation easiness for the operator.
Number | Date | Country | Kind |
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110132355 | Aug 2021 | TW | national |