FR2893874A1 - Screw centered holding and screwing device, has screwdriver bit with rod, where rod slides in one of tubes and washers are brought closer with respect to each other when user places screw and exerts pressure on screw - Google Patents

Abstract

The device has a screwdriver bit (1) with a hexagonal shaped iron rod (11), where the rod slides in a hexagonal shaped opening of a tube (5) and washers (2, 6) are brought closer with respect to each other when a user places a screw and exerts a pressure on the screw . The washer (6) slides in an opening of a tube (20), and two squared iron bars (12, 13) are articulated at the level of their U shaped notches (14, 15) which are embedded in other U shaped notches (8, 10) of the washer.

Description

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  The present invention relates to a device for screwing and holding a screw at the same time without risk of injury to the fingers in case of skidding between the tool and the screw. Traditionally to screw a screw is held a screwdriver or a screwdriver with one hand and the screw with the fingers of another hand while exerting pressure on the screw to pre screw. The device according to the invention overcomes this disadvantage. The device also serves as a drill thanks to adapted wicks which are more practical than ordinary wicks at the installation level. The device comprises according to a first feature, a screwdriver bit whose hexagonal rod slides in a tube whose orifice is hexagonal when the user places a screw and exerts a pressure on it. This action brings two pucks closer to each other. By coming closer to each other, the top washer slides and brings two square iron bars together by its two orifices, revealing them and modifying their angles of inclination, which is located on the bottom washer, to act as a clamp. and hold centered a screw. The spring is used to move the washer away from each other to put the device in gripper mode. A tube crimped at its top end to the top washer and at its bottom end to the bottom washer keeps the mechanism assembled. Rotating a ring to the right or left around the tube blocks and unlocks the clip mode. According to the particular embodiments: -. the hexagonal shaped rod has at its top end a screwdriver bit holder to allow to adapt the screwdriver bit to the screw. - The two square iron bars can be hinged to the bottom washer with a hinge. The two bars of square iron can be folded to more or less 20 to their half in order to approach more or less quickly one of the other to best adapt to certain types of screws. - The two iron bars can be triangular or semi-cylindrical. - A bearing is placed on the top washer so as not to damage a wall or other. - The locking system of the ring can be found at the top of the tube and have three positions. 3'0 - The number of bars can be three or more. - Drill adapted to drill holes. - The shape of the tube that holds the assembled mechanism can be tapered. The accompanying drawings illustrate the invention: FIG. 1 represents, in part, the device of the invention. Figure 2 shows a part, a variant of this device. Referring to the drawing of Figure 1, the device comprises a screwdriver bit (1) whose stem is hexagonal shape is five centimeters. At one end of the top of the rod of the screwdriver bit (1), a washer (2) is centered and welded leaving only the screwdriver portion protruding. The washer (2) is provided with two identical square holes (3) and (4), 40 facing each other with respect to the center of the washer.

  This first piece can be achieved by a single operation by molding. The second piece of the device consists of a tube (5) which measures eight centimeters and whose orifice is hexagonal just large enough to slide the rod of the hexagonal screwdriver bit (l).

  The hexagonal shape of the rod (1) and the hexagonal hole of the tube (5) allow them to rotate at the same time when they fit together. At the end of the bottom of the tube (5) a hexagonal shaped iron rod (11) is fitted on a centimeter is welded, the remaining four centimeters are used for use with a screwdriver handle or a screwdriver. At one end of the top of the tube (5), a washer (6) is centered and welded, it is provided on the edge with four identical U-shaped notches (7), (8), (9) and (10) at 90 from each other with respect to the center of the washer. This second piece can be made by a single operation by molding. The third and fourth parts of the device are two square iron bars (12) and (13) hinged at their U-shaped notches (14) and (15) which are nested with the U-shaped notches (8). and (10) the washer (6). The top ends of the two square iron bars (12) and (13) slide in the orifices (3) and (4) of the washer (2). When a user places a screw on and a pressure on a cruciform bit (1), the hexagonal rod (1) slides in the hexagonal hole of the tube (5) and brings the washer (2) closer together. of the washer (6).

  The washer (2) moving closer to the washer (6) slides and approximates by its orifices (3) and (4), the two square iron bars (12) and (13), make them appear and changes their angles tilt to act as a clamp and hold a screw centered at their V-shaped notches (16) and (17). The spring (18) threaded onto the hexagonal shaped rod (1) serves to move the washer (2) away from the washer (6) to put the device in gripper-free mode when no pressure is exerted on a screwdriver bit. The washer (19) of the same diameter as the washers (2) and (6) and the tube (20) of which 1 round orifice has a diameter as large as the washers (2), (6) and (19) make it possible to maintain the assembled mechanism. the tube (20) is crimped at its upper end to the washers (2) and at its bottom end to the washer (19), of which 1 round orifice has a diameter just large enough to slide the tube (5). ). Only the washer (6) slides in the orifice of the tube (20). The tube (20) has two rectangle orifices (21) and (22) located two millimeters from its bottom end, facing each other relative to the center of the orifice of the tube. these orifices associated with the cube (24) and (25) of the ring (23) serve to block or unlock the clamp mode. When the cubes (24) and (25) are fitted into the orifices (21) and (22) of the tube and are in abutment against the left wall of the rectangle orifices, the U-shaped notches (7) and (9) of the washer (6) are found superimposed on the cubes (24) and (25). As a result, the washer (6) can slide in the tube (20) by passing the cube (24) and (25) through its U-shaped notches (7) and (9), this is the clamp mode. By rotating the ring 40 (23) to the right, the cubes (24) and (25) end up against the right wall of the -3

  rectangle orifices (21) and (22) of the tube. In this position the U-shaped notches (7) and (9) of the washer (6) and the cubes (24) and (25) are no longer superimposed. As a result, the washer (6) can no longer slide in the tube (20) because the washer (6) abuts against the cube (24) and (25) and can no longer slide. This is the clip-free mode.

  In the embodiment according to FIG. 2, the hexagonal-shaped rod (1) has at its top end a screwdriver bit holder to enable the screwdriver bit to be adapted to the screw or to place the wick (34) which is specially designed for this tool. The wick (34) is at its bottom end hexagonal shape over three centimeters with a size that is two centimeters from the bottom which serves to accommodate the V-shaped notches (16) and (17) to be maintained. The two square iron bars (12) and (13) are hinged to the washer (6) with a hinge. The two square iron bars (12) and (13) are folded more or less 20 "to their half in order to move more or less rapidly towards one another to better adapt to certain types of screws. .

  The locking system of the ring (23) with the tube (20) is at the end of the top of the tube (20). In this case the tube (20) is crimped at its top end to the washer (19) and at its bottom end to the washer (6). The orifice of the washer (19) makes it possible to place 1 screwdriver bit (33) or the bit (34) which is specially designed for this tool. The washer (2) will be provided with two U-shaped notches (7) and (9) to allow it to slide or not in the orifice of the tube (20). The U-shaped notches (7) and (9) each have at their right walls a tongue against which will abut the cubes (24) and (25). The orifices (21) and (22) of the tube (20) are larger to allow the cubes (24) and (25) to be placed in three positions.

  The tube (20) has at its bottom end two cubes (31) and (32) facing each other. The walls of the bottom of cubes (31) and (32) are corrugated, at the top there is no wall The tube (20) has at its top end a tongue (26) which is provided with a small hole in which comes s 'snap the end of the spring (27), the other end of the spring engages in the hole of the tongue of the half ring (23).

  The spring (27) places the cubes (24) and (25) against the right wall of the orifices (21) and (22). The half-ring (23) has at its bottom end two tabs facing each other. The ring (28) is provided with two U-shaped notches facing each other. The ring (28) is provided with two rectangular cubes (29) and (30) facing each other. The right cubes (29) and (30) have no walls at the bottom end.

  The orifices of the right cubes (29) and (30) accommodate a spring and a ball. The tongues of the half-ring (23) are fitted to the U-shaped notches of the ring (28). The two rectangular cubes (29) and (30) of the ring (28) with their springs and balls fit into the cubes (31) and (32) of the tube (20). -4 The rotation of the ring (28) to the right or left place the balls in one of the three recesses of the corrugated part of the cubes (31) and (32). This allows the cubes (24) and (25) to be placed in three different positions. When the right cubes (29) and (30) are against the left wall of the cubes (31) and (32), the cubes (24) and (25) are against the left wall of the orifices (21) and (22). ), despite the spring (27) which tends to put them right this thanks to the tongues of the half ring (23) which abut against the right wall of the U-shaped notches of the ring (28). This position is the clip-free mode. The rotation of the ring (28) to the right place the balls in the hollow of the middle of the corrugated part of the cubes (31) and (32). In this position the cubes (24) and (25) are in the middle of the orifices (21) and (22) despite the spring (27) which tends to put them to the right this thanks to the tongues of the half ring (23) which abut against the right wall of the U-shaped notches of the ring (28). This position is the clip mode. For the drill mode, the rotation of the ring (28) to the right places the balls in the right-hand hollow of the corrugated part of the cubes (31) and (32). In this position the cubes 24) and (25) which tends to move to the right of the orifices (21) and (22) through the spring (27), abut against the tabs of the U-shaped notches (7) and (9). ). When a user places the wick (34) designed for this tool and exerts a pressure on it, the washer (2) slides in the tube (20). As a result, the tabs of the U-shaped notches (7) and (9) no longer oppose the cubes (24) and (25) which are placed to the right of the orifices (21) and (22) thanks to the spring ( 27). When 1 user no longer exerts pressure on it, the washer (2) rises slidably in the tube (20) and abuts against the cubes (24) and (25). This prevents the wick from going out because it remains maintained at the level of its size by the iron bars (12) and (13). Rotating the ring (23) to the left allows the washer (2) to be raised to remove the wick. According to a variant not illustrated, the number of bars can be three or more. In this case the washer (2) will be provided with three or more holes. The shape of the tube (20) may be conical if the locking system of the ring (23) with the tube (20) is at the end of the top of the tube (20). In this case the bottom washer (19) 30 will have a larger diameter than the other washers. The two iron bars (12) and (13) may be triangular or semi-cylindrical in this way the orifices (3) and (4) of the washer (2) will be triangular or semi-cylindrical. A bearing can be placed and welded on the washer (19) so as not to damage a wall or other when the tube (20) touches it. This mechanism may be an integral part of a screwdriver. By way of non-limiting example, the tool will have dimensions of the order of 10 cm in length, the cylinder of which will have dimensions of the order of 4 cm in length and 3 cm in diameter. The device according to the invention is intended to hold and screw the screws and drill holes with the wicks specially designed for this tool.

Claims (9)

claims   1) Device for screwing and holding centered a screw at the same time characterized in that it comprises a screwdriver bit (1) whose stem is hexagonal. When a user places a screw on and a pressure on a cruciform bit (1), the hexagonal rod (1) slides in the hexagonal hole of the tube (5) and brings the washer (2) closer together. of the washer (6) .The washer (2) moving closer to the washer (6) slides and approximates by its orifices (3) and (4), the two square iron bars (12) and (13), reveal them and modify their angles of inclination to serve as a clamp and hold a screw centered at their V-shaped notches (16) and (17). The two square iron bars (12) and (13) are hinged at their U-shaped slots (14) and (15) which are fitted to the U-shaped slots (8) and (10) of the washer. (6). The hexagonally shaped iron rod (11) fitted one centimeter and welded to the bottom end of the tube (5) is for use with a screwdriver handle or screwdriver. The spring (18) threaded on the hexagonal rod (1) is used to move the washer (2) away from the washer (6) to put the device in gripper mode when no pressure is exerted on 1 screwdriver bit. To maintain the assembled mechanism, the tube (20) is crimped at its end from the top to the washers (2) and at its bottom end to the washer (19) whose round hole has a diameter just large enough to be able to do so. slide the tube (5). Only the washer (6) slides in the orifice of the tube (20). The washers (2) (6) and (19) have the same diameter as the orifice of the tube (20). When the cubes (24) and (25) of the ring (23) are fitted into the orifices (21) and (22) of the tube and abut against the left wall of the rectangle orifices, the U-shaped notches ( 7) and (9) of the washer (6) are superposed on the cubes (24) and (25). As a result, the washer (6) can slide in the tube (20) by passing the cube (24) and (25) through its U-shaped notches (7) and (9), this is the clamp mode. By rotating the ring (23) to the right, the cubes (24) and (25) are in abutment against the right wall of the rectangle orifices (21) and (22) of the tube. In this position, the U-shaped notches (7) and (9) of the washer (6) and the cubes (24) and (25) are no longer superposed. As a result, the washer (6) can no longer slide. This is the clip-free mode.   2) Device according to claim 1 characterized in that the hexagonal-shaped rod (1) has at its top end a screwdriver bit holder to allow to adapt the screwdriver bit to the screw or to place the wick (34) .   3) Device according to claim 1, 2, characterized in that the wicks (34) adapted to be used with this tool. The wick (34) is at its bottom end hexagonal shape on three centimeters with a circular size which is two centimeters from the bottom which serves to be held by the clamp   4) Device according to claim 1, 2, 3 characterized in that the two square iron bars (12) and (13) can be folded to more or less 20 to their half in order to approach more or less rapidly one of them. on the other to best fit certain types of screws.-6 1   5) Device according to any one of claims characterized in that the locking system of the half ring (23) with the tube (20) can be at the end of the top of the tube (20) and gives a possibility of three position. In this case the tube (20) is crimped at its top end to the washers (19) and at its bottom end to the washer (6). The orifice of the washer (19) makes it possible to place 1 screwdriver bit (33) or the bit (34).   6) Device according to any one of claims characterized in that the washer (2) is provided with two U-shaped notches (7) and (9) each having at their right walls a tab against which will abut the cubes (24). ) and (25).   7) Device according to any one of claims characterized in that the spring (27) tends to place the cubes (24) and (25) to the right   8) Device according to any one of claims characterized in that the rotation of the ring (28) to the right or left place the balls in one of the three recesses of the corrugated part of the cubes (31) and (32). This allows the cubes (24) and (25) to be placed in three different positions.   9) Device according to any one of claims characterized in that the number of bars can be three or more. In this case the washer (2) will be provided with three or more holes. 9) Device according to any one of claims characterized in that the shape of the tube (20) can be tapered if the locking system of the ring (23) with the tube (20) is at the end of the top of the tube (20). In this case the bottom washer (19) will be larger in diameter than the other washers. 11) Device according to any one of the claims characterized, the two iron bars (12) and (13) may be triangular or semi-cylindrical in this way the orifices (3) and (4) of the washer (2) will be triangular or semi-cylindrical. 12) Device according to any one of the claims characterized in that this mechanism can be an integral part of a drill driver. 13) Device according to any one of claims characterized in that a bearing is placed on the washer (19) so as not to damage a wall or other when the tube (20) touches it.