JP6041035B1 - Auxiliary tool for electric screwdriver - Google Patents

Abstract

To provide an auxiliary tool for an electric screwdriver that can very easily and securely tighten or loosen a nut of an anchor bolt. A driven gear b meshed with a main driving gear a without an auxiliary tool A for an electric screwdriver is pivotally mounted, and two small diameter gears c and c meshed with the driven gear b are converted into two small diameter gears c, c is pivotally connected without meshing, and has an insertion hole 5 into which the head 3 or nut 4 of the bolt e is fitted and inserted into the inner portion of the two small-diameter gears c and c. 6 is inserted, and a notch driving gear f having a notch insertion portion 7 having a diameter smaller than the diameter of the insertion hole 5 of the bolt e is pivoted, and the bolt e is screwed into the inner portion 9 from the outer portion 8 of the grip frame d. The notch insertion part 7a in which 6 is inserted was formed. [Selection] Figure 3

Description

  The present invention relates to the field of an auxiliary tool for an electric screwdriver used for tightening or loosening a screwed nut to an anchor bolt or the like used for civil engineering / construction, assembling or repairing machinery. .

  Patent No. 4729210 (name of invention: multi-attachment for electric screwdrivers) is disclosed as an auxiliary tool for electric screwdrivers used for tightening or loosening nuts that are screwed into anchor bolts used in civil engineering and construction. ing.

  The structure of the multi-attachment for an electric driver disclosed in Japanese Patent No. 4729210 disclosed in the above-mentioned disclosure is a first having a connecting hole 2a that fits on the rotating shaft Ya of the electric driver Y as shown in FIGS. And a third driven gear 4 that meshes with the driven gear 3 and a third driven gear 4 that meshes with the driven gear 3, and a second driven gear 3 that meshes with the gear 2. The third driven gear 4 is limited in that it has through holes 4a and 4b into which the nuts A3 and A4 of different nut sizes are inserted on the front and back sides, as specified in claim 1 of the claims. Structure.

  Accordingly, in order to fit the nut or the like screwed to the anchor bolt into the third driven gear 4 into the through holes 4a and 4b of the third driven gear 4, the electric motor that is being held is used. The driver's multi-attachment could only be moved up and down or in either direction on the left or right side.

  Further, the work site of the multi-attachment for electric screwdrivers is not only a place with good workability but also an extremely narrow work place, a place with poor footing, or a high place. Since the fitting operation of the attachment with the through holes 4a and 4b of the third driven gear 4 of the attachment is only the through holes 4a and 4b, the workers are burdened, and workability and work efficiency are not suitable. .

  For this reason, it was urgent to develop an auxiliary tool for an electric screwdriver with good tightening or loosening of nuts to be screwed onto anchor bolts of workers in the above-mentioned civil engineering or construction work sites with poor or high footing. .

Japanese Patent No. 4729210

  The multi-attachment for an electric screwdriver disclosed in the above-mentioned conventionally known Japanese Patent No. 4729210 is a third driven gear 4 (FIGS. 1A and B) for tightening or loosening a nut screwed to an anchor bolt. 3 and 4) are only through-holes 4a and 4b penetrating the front and back, and there was no other structure for fitting the nut.

  For this reason, the work for tightening or loosening the nuts screwed onto the anchor bolts is extremely difficult, and the work efficiency cannot be said to be good.

  However, the auxiliary tool for an electric screwdriver according to the present invention includes a fitting hole through which the nut of the bolt is fitted and a notch fitting insertion connected to the fitting hole in order to tighten or loosen the nut screwed into the anchor bolt. In addition to providing a notch drive gear having a portion, a gripping frame is also provided with a notch fitting insertion portion into which the screw thread portion of the bolt is fitted, so that the tightening or loosening operation of the nut of the anchor bolt is made conventional. In comparison, the problem has been solved by making it extremely simple, quick and reliable.

  Further, according to the present invention, two small-diameter gears are opposed to the notch drive gear and meshed with an interval so that the notch drive gear is not idling, whereby the nut of the anchor bolt is tightened or loosened. The problem was solved by preventing the notch drive gear from idling during work.

  In addition, the present invention provides an indicator for the notch drive gear and the upper frame or the lower frame, and after the tightening or loosening operation of the nut of the anchor bolt, the auxiliary tool for an electric screwdriver of the present invention can be detached from the anchor bolt. The problem was solved by making it extremely easy and quick.

  The present invention forms a hexagonal fitting insertion part in the grip frame of the auxiliary tool for an electric screwdriver, and without using a separate work tool for the final tightening operation after the nut tightening operation of the anchor bolt, We solved the problem so that it could be done smoothly.

As a means for solving the problem, the invention according to claim 1 is a gripping device in which a main driving gear a is formed in which an insertion hole 1 in which a rotary drive shaft 2 of an electric driver y is fitted is formed in an inner portion. In the auxiliary tool A for an electric screwdriver having a frame d, two small-diameter gears that are pivotally attached to a driven gear b meshed with the main drive gear a constituting the auxiliary tool A for electric screwdriver and are meshed with the driven gear b c, c are pivoted without meshing the two small-diameter gears c, c, and the head 3 or nut 4 of the bolt e is fitted to the inner part where the two small-diameter gears c, c are meshed. A notch driving gear f having a fitting insertion hole 5 to be inserted, a screw 6 of the bolt e fitted therein, and a notch fitting insertion portion 7 having a diameter smaller than the diameter of the fitting insertion hole 5 of the bolt e is pivotally attached. , Inner portion 9 than outer portion 8 of gripping frame d The bolt e screw rod 6 caused to form the fitting interpolation notch fitting portion 7a of the gripping frame d, together with is composed of an upper frame g and the middle side frame h and the lower frame i, each frame A notch insertion portion 7a into which the screw 6 of the bolt e is inserted is formed in g, h, i, and the grip frame d includes a plate-like upper frame g and the various gears a, b, c, c, and a lower frame i having the same shape as the upper frame g. The upper frame g and the lower frame i include the various gears. The pivot insertion holes 27, 28, 28 a, 29 for pivoting a, b, c, c, f are formed symmetrically, and the outer periphery is cylindrical on the front surface portion 10 and the rear surface portion 11 of the main driving gear a. The shaft flange parts 12 and 13 are projected and the shaft flange parts 12 and 13 are projected. It is supported by the upper frame g and the lower frame i, and shaft flanges 16 and 17 having a cylindrical outer periphery project from the front surface portion 14 and the back surface portion 15 of the driven gear b. Is supported by the upper frame g and the lower frame i, and the two small diameter gears c, c are inserted into the small diameter gears c, c into the insertion holes 1a formed in the center of the small diameter gears c, c. The small-diameter pins 18 and 18 are supported on the upper frame g and the lower frame i, and the outer peripheral surface 19 and the rear surface portion 20 of the notch drive gear f surround the fitting insertion hole 5 and have a cylindrical outer periphery. In addition, a notch insertion portion 7 into which the screw 6 of the bolt e is inserted is formed, and cylindrical shaft flange portions 22 and 23 are formed. The shaft flange portions 22 and 23 are the upper frame g and the lower frame. i is pivoted while meshing with the small-diameter gears c and c. Then, the notch insertion portion 7 and the notch insertion portion 7a of the gripping frame d match the upper frame g and the notch drive gear f, and the screw portion 6 of the bolt e indicates the detachment indicating portion 25. Is an auxiliary tool for an electric screwdriver.

As means for solving the problem, the invention according to claim 2 is an auxiliary tool for an electric screwdriver in which a hexagonal fitting insertion portion 24 for final fastening is formed at one end portion of the grip frame d. .

The invention according to claim 1 is an auxiliary tool for an electric screwdriver having a gripping frame having a main driving gear pivotally formed on an inner side thereof, in which an insertion hole for fitting an electric screwdriver's rotational drive shaft is fitted. The driven gear meshed with the main driving gear constituting the auxiliary tool is pivoted, and the two small diameter gears meshed with the driven gear are pivoted without meshing the two small diameter gears, A notch having a fitting insertion hole into which a bolt head or a nut is fitted and fitted into two small-diameter gears, and a screw thread of the bolt being fitted, and having a diameter smaller than the diameter of the bolt fitting insertion hole A notch driving gear having a fitting insertion part is pivotally attached, and a notch fitting insertion part into which the screw thread of the bolt is fitted is formed on the inner side from the outer side part of the gripping frame. Side frame And a lower frame, and each frame is formed with a notch fitting insertion portion into which the bolt screw is fitted, and the gripping frame includes a plate-like upper frame and the various gears. It is composed of a middle frame in which a surrounding enclosure is formed, and a lower frame having the same shape as the upper frame, and the upper frame and the lower frame have pivot fitting insertion holes for pivoting the various gears. It is formed symmetrically, and a shaft flange portion having a cylindrical outer periphery is provided on the front surface and the back surface portion of the main driving gear, and the shaft flange portion is supported by the upper frame and the lower frame, so that the driven gear The front and back portions are provided with a shaft flange portion having a cylindrical outer periphery, the shaft flange portion is supported by the upper frame and the lower frame, and the two small-diameter gears are provided at the center of the small-diameter gear. Insert a small diameter pin into the formed insertion hole. The small-diameter pin is supported on the upper frame and the lower frame, and the front and back surfaces of the notch drive gear surround the insertion insertion hole and have a cylindrical outer periphery, and the bolt screw is inserted. A notch fitting insertion portion is formed, and a cylindrical shaft flange portion is formed, and the shaft flange portion is pivotally attached to the upper frame and the lower frame while meshing with the small-diameter gear, Since the notch drive gear is an auxiliary tool for an electric screwdriver in which the notch insertion portion and the notch insertion portion of the gripping frame coincide with the notch driving gear, and the screw screw is provided with an indication portion that suggests the detachment . While holding the auxiliary tool, just move forward with the anchor bolt screwed, the anchor bolt screw part fits into the notch insertion part of the notch drive gear, and further advance in either the upper or left or right direction. The nut can be smoothly fitted into the fitting insertion hole of the nut.

  Therefore, the auxiliary tool for an electric screwdriver of the present invention can be fitted into the nut very easily and quickly.

  Therefore, the auxiliary tool for an electric screwdriver of the present invention can significantly increase the work efficiency of the tightening or loosening operation of the nut compared to the conventional one.

According to the present invention, the grip frame is composed of an upper frame, an intermediate frame, and a lower frame, and a notch insertion portion into which the screw of the bolt is inserted is formed in each frame. , Have the same effect as above.

According to the present invention, a shaft flange having a cylindrical outer shape protrudes from the front surface and the back surface of the main driving gear, the shaft flange is supported by the upper frame and the lower frame, and the surface portion of the driven gear. And a rear surface with a cylindrical flange portion projecting on the outer periphery, the shaft flange portion is supported by the upper frame and the lower frame, and the two small diameter gears are formed at the center of the small diameter gear. A small-diameter pin is inserted into the insertion hole, the small-diameter pin is supported on the upper frame and the lower frame, and the outer periphery of the notch driving gear is surrounded by the insertion insertion hole and the outer periphery is cylindrical. In addition, a notch insertion portion into which the screw of the bolt is inserted is formed, and a cylindrical shaft flange portion is formed, and the shaft flange portion meshes with the small-diameter gear with the upper frame and the lower frame. while being allowed to pivotally, the cut driving formate and the upper frame To, consistent notch fitting portion and the notch fitting portion of the gripping frame, the screw rod of the bolt is electric driver assist tool provided the instruction unit suggesting withdrawal, have the same effect as the doing.

Since the invention according to claim 2 is an auxiliary tool for an electric screwdriver in which a hexagonal fitting insertion part for final fastening is formed at one end of the gripping frame, the same effect as the invention according to claim 1 is provided. have.

  Further, the present invention provides that after the nut tightening or loosening operation, even if the notch fitting insertion portion and the fitting insertion hole do not coincide with each other, even if the operation is finished, the indication portions attached to the gripping frame and the notch driving gear are If the notch driving gear is manually rotated until it matches, there is an advantage that the notch fitting insertion portion and the fitting insertion hole are matched and can be easily detached from the anchor bolt.

  Also, when the notch insertion part and the fitting insertion hole do not match at the start of the work, the screw gear can be fitted very easily by rotating the drive gear until the instruction parts match each other. There is.

It is a top view of the auxiliary tool for electric screwdrivers of the present invention.

It is a bottom view of the auxiliary tool for the electric screwdriver.

It is a top view of the state which removed the upper side frame of the auxiliary tool for electric drivers.

FIG. 4 is a plan view showing a state in which each gear is rotated from the state of FIG. 3 and the notch insertion portion of the notch drive gear meshes with another small diameter gear even if it does not mesh with one small diameter gear.

It is a front view of the auxiliary tool for electric drivers.

It is a perspective view which shows the use condition of the auxiliary tool for electric drivers.

It is a front view of the lower frame of the auxiliary tool for electric drivers.

It is a front view of the inside frame of the auxiliary tool for the electric screwdriver.

It is a front view of the main drive gear which comprises the auxiliary tool for the electric screwdriver.

It is a front view of the driven gear which comprises the auxiliary tool for electric drivers.

It is a front view of the shaft rod of the small diameter gear which comprises the auxiliary tool for electric drivers.

It is a top view of the notch drive gear of the auxiliary tool for electric drivers.

It is a front view of the notch drive gear of FIG.

Since the embodiments relating to the implementation of the invention described in claims 1 and 2 are common, they will be collectively described as follows.

  In the figure, A is an auxiliary tool for an electric screwdriver and has the following configuration.

  The electric screwdriver auxiliary tool A is composed of a gripping frame d, a manual gear a, a driven gear b, two small-diameter gears c and c, and a notch drive gear f having a notch insertion portion 7. Yes.

  The grip frame d includes a generally plate-shaped upper frame g, an intermediate frame h in which a surrounding portion 26 surrounding the various gears a, b, c, c, and f is formed, and the upper frame g It is comprised from the lower frame i of the same shape.

The upper frame g and the lower frame i are usually made of a metal plate, and the middle frame h is made of a synthetic resin.

The upper frame g, the middle frame h, and the lower frame i are symmetrically formed with pivot fitting insertion holes 27, 28, 28a, 29 for pivoting the various gears a, b, c, c, f. Has been.

Furthermore, fixing holes 30 are formed symmetrically in the upper frame g, the lower frame i, and the middle frame h. Reference numeral 30a denotes a stopper.

a is a main gear which forms the insertion hole 1 in which the rotational drive shaft 2 of the electric screwdriver y is inserted inside.

On the front surface portion 10 and the back surface portion 11 of the main driving gear a, a shaft flange portion 12 having a cylindrical outer shape protrudes, and the shaft flange portion 12 is overlapped and assembled with the assembled upper frame g and lower portion. The side frame i is pivotally inserted into the pivot insertion holes 27 and 29 (see FIGS. 1 and 2).

Between the upper frame g and the lower frame i, an intermediate frame h is arranged and assembled in a state where the gears a, b, c, c, and f are smoothly pivoted and meshed and rotated. It has been. The main gear a is set as shown in FIGS.

  In the figure, b is a driven gear, which meshes with the main driving gear a. On the front surface portion 14 and the back surface portion 15 of the driven gear b, shaft flange portions 16 and 17 having a cylindrical outer periphery project, and the shaft flange portions 16 and 17 are provided on the upper frame g and the lower frame. i is pivotally inserted into the pivot fitting insertion holes 28, 28, respectively.

  In the figure, c and c are two small-diameter gears that mesh with the driven gear 3 and have the following configuration.

  The two small-diameter gears c and c have shaft rods 31 and 31 protruding from the upper and lower surfaces of small-diameter pins j and j provided separately in fitting insertion holes 1a and 1a formed at the center. The shaft rods 31, 31 are supported on the pivot fitting insertion portions 28a, 28a of the upper frame g and the lower frame i. The small-diameter gears c and c are required not to mesh with each other.

  Accordingly, the small-diameter gears c and c are assembled and set in mesh with the driven gear b and the notch drive gear f.

  Further, the small-diameter gears c and c are set in a state surrounded by the middle frame h.

  In the figure, f is a notch drive gear and has the following configuration.

  The notch drive gear f is formed on the front surface portion 19 and the back surface portion 20 so as to surround the insertion insertion hole 5 and to have a cylindrical shape on the outer periphery, and so that only the screw 6 of the anchor bolt e can be inserted. The shaft flange portions 22 and 23 having the notch insertion portion 7 formed in the notch from the outer peripheral portion to the fitting insertion hole 5 are pivotally attached to the pivot insertion holes 29 and 29 of the upper frame g and the lower frame i. Has been.

  The notch driving gear f and the two small-diameter gears c, c are engaged and assembled as shown in FIG.

In the figure, reference numeral 24 denotes a hexagonal fitting insertion part for final fastening at one end of the grip frame d.

  When the grip frame d is overlapped and fixed by the upper frame g, the middle frame h, and the lower frame i, the hexagonal insertion portion 24 is configured so that each of the three frames g, h, Each is formed so as to penetrate i.

  Further, a notch insertion portion 7a having a shape into which the screw 6 of the anchor bolt e can be smoothly fitted is provided at the front part of each of the three frames g, h, i, and the notch driving gear f is notched. It is formed in the same shape as the insertion part 7.

  When the upper frame g, the middle frame h, and the lower frame i of each frame constituting the grip frame d are overlapped and fixed, four notch insertion portions 7 for the three frames g, h, i are provided. 7a are in a matched state as shown in FIGS.

  In the figure, reference numeral 25 denotes an instruction unit. The instructing portion 25 is in a state that the notch insertion portion 7a of the three frames g, h, i and the notch insertion portion 7 of the notch driving gear f can pass through the screw 6 of the anchor bolt e. This is for easily confirming the matched state. The instruction portion 25 is formed by adding to the side surface of the shaft flange portion 22 of the notch drive gear f that normally protrudes from the upper frame g and the upper frame g.

  Furthermore, although the said instruction | indication part 25 is normally formed in a line shape, it is not limited.

  When the lines are matched and set on the same line, the notifying portion 25 is matched with the notch insertion portions 7 and 7a so that the screw 6 of the anchor bolt e can pass therethrough and the insertion insertion hole of the notch driving gear f. This suggests that it can be surely removed from 5.

  An example of how to use the auxiliary tool for an electric screwdriver of the present invention will be described as follows.

  As shown in FIGS. 1, 2, and 6, with the notch insertion portion 7 of the notch drive gear f aligned with the notch insertion portion 7 a of each frame g, h, i, the auxiliary tool A is moved to one side. While holding it with the hand, the screw 6 of the anchor bolt e is aimed and advanced.

  Further, the auxiliary tool A is advanced, and the screw 6 portion of the anchor bolt e is fitted into the fitting insertion hole 5 of the notch drive gear f.

  Next, when the auxiliary tool A being gripped is advanced in the upper direction or the left or right direction, the nut 4 to be screwed to the bolt e can be smoothly fitted into the fitting insertion hole 5.

  Further, the rotation direction of the electric driver y is adjusted in advance to reverse rotation, the rotational drive shaft 2 of the driver y is fitted into the insertion hole 1 of the main driving gear a, and the electric driver y is driven, The nut 4 of the anchor bolt e is screwed or unscrewed into a predetermined position.

  After the work is completed as described above, the electric screwdriver y being gripped is detached from the auxiliary tool A.

  Further, after the auxiliary tool A being held is slid, the notch driving gear f is manually rotated until the notch fitting insertion portion 7 and the fitting insertion hole 5 are matched. If they match, if the auxiliary tool A being gripped is pulled to the front, it can be easily and quickly removed from the screw 6 of the bolt e, and the operation is completed.

A Auxiliary tool for an electric screwdriver y Electric screwdriver a Main drive gear b Driven gear c Small diameter gear d Grasp frame e Bolt f Notch drive gear g Upper frame h Middle frame i Lower frame j Small diameter pin 1 Insertion hole 1a Insertion hole 2 Rotation drive shaft 3 Head 4 Nut 5 Fitting insertion hole 6 Screw 7 Notch fitting insertion part 7a Notch fitting insertion part 8 Outer part 9 Inner part 10 Surface part 11 Back part 12 Shaft part 13 Shaft part 14 Surface part 15 Back face Part 16 Axle part 17 Axle part 18 Small-diameter pin 19 Surface part 20 Back part 22 Axle part 23 Axle part 24 Hexagonal fitting insertion part 25 Instruction part 26 Enclosing part 27 Pivoting insertion part 28 Pivoting insertion Part 28a Pivot fitting insertion part 29 Pivot fitting insertion hole 30 Fixing hole 30a Stopper 31 Axle

Claims (2)

In an auxiliary tool for an electric screwdriver having a gripping frame on which a main driving gear is pivotally attached, which is formed on the inner side with an insertion hole for fitting an electric screwdriver's rotational drive shaft.
The driven gear meshed with the main driving gear constituting the auxiliary tool for the electric screwdriver is pivotally mounted, and the two small diameter gears meshed with the driven gear are pivoted without meshing the two small diameter gears. A bolt head or a nut is inserted into the inner portion meshed with the two small-diameter gears, and a screw thread of the bolt is inserted, and the diameter of the bolt insertion hole is A notch drive gear having a notch insertion portion with a small diameter is pivotally attached, and a notch insertion insertion portion into which the screw of the bolt is inserted is formed on the inner side from the outer side portion of the gripping frame, and the gripping frame is The frame includes a frame, an intermediate frame, and a lower frame, and each frame is provided with a notch insertion portion into which a screw thread of the bolt is inserted, and the gripping frame includes a plate-like upper frame, , The above various A middle frame in which a surrounding portion is formed, and a lower frame having the same shape as the upper frame, and a pivot fitting insertion hole for pivotally fitting the various gears to the upper frame and the lower frame Are formed symmetrically, and a shaft flange having a cylindrical outer shape protrudes from the front surface and the back surface of the main driving gear, and the shaft flange is supported by the upper frame and the lower frame. A shaft flange having a cylindrical outer shape protrudes from the front and back surfaces of the shaft, the shaft flange is supported by the upper frame and the lower frame, and the two small-diameter gears are the center of the small-diameter gear. A small-diameter pin is inserted into a fitting insertion hole formed on the upper frame, the small-diameter pin is supported on the upper frame and the lower frame, and the outer periphery of the notch driving gear surrounds the insertion insertion hole. Cylinder-shaped and screwed with the bolt A notch fitting insertion portion is formed, and a cylindrical shaft flange portion is formed, and the shaft flange portion is pivotally attached to the upper frame and the lower frame while meshing with the small-diameter gear, An auxiliary tool for an electric screwdriver, wherein the notch driving gear is provided with an indication portion that the notch insertion portion of the gripping frame and the notch fitting insertion portion of the gripping frame coincide with each other to indicate that the screw thread is detached.   The auxiliary tool for an electric screwdriver according to claim 1, wherein a hexagonal fitting insertion part for final fastening is formed at one end of the gripping frame.