JPH0570870U - Bolt and nut fasteners - Google Patents

Abstract

(57) [Summary] [Purpose] Tightening suitable for bolts and nuts can be done easily, and more than one bolt and nut can be fastened at the same time. Since the bolts and nuts can be fastened even if their pitches are not uniform, workability and quality can be improved. [Structure] A rotary shaft body 1 coupled to a drive shaft of an electric drill or the like.
A drive gear 3 is provided in the drive gear 3 and the transmission gear 5 that is the driven gear of the bolt socket shaft body 6 is transmitted by an idle gear 4 that is an intermediate gear. The shaft body 6, the transmission gear 5, and the idle gear 4 are housed in an arm 10, and the arm 10 is rotatably connected to each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bolt or nut fastener.

[0002]

[Prior Art]

 In order to fasten bolts and nuts at construction sites, etc., monkey wrench and spanners have conventionally been used for tightening.

[0003]

[Problems to be solved by the device]

 However, such tightening between monkey spanners and spanners is difficult to obtain the proper torque.

Further, since it is limited to the fastening of a single bolt and nut, when fastening a plurality of bolts and nuts, the work is required each time, which is extremely inefficient.

The object of the present invention is to eliminate the inconvenience of the above-mentioned conventional example, to perform tightening suitable for bolts and nuts, and also to enable the fastening of a plurality of bolts and nuts. An object of the present invention is to provide a bolt / nut fastener that can be fastened even if the pitch of the bolt / nut is not uniform.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a drive gear on a rotary shaft connected to a drive shaft of an electric drill or the like, and transmits the drive gear and a driven gear of the bolt socket shaft by an intermediate gear. However, the driving gear, the socket shaft body for bolts, the driven gear of the socket shaft body for bolts, and the intermediate gear are housed in an arm, and the gist is that the arms are rotatably connected to each other. Is.

[0007]

According to the present invention, when a drive shaft such as an electric drill is coupled to a rotary shaft and the drive shaft is rotated, the rotation of the drive gear provided on the rotary shaft causes the intermediate gear and the driven gear to rotate. It is transmitted to the bolt socket shaft body through the bolt socket nut body, and the bolt socket nut body is rotated to tighten the bolt or nut fitted therein.

Further, since there are a plurality of bolt socket shaft bodies for each arm with respect to the central rotating shaft body, a plurality of bolts or nuts can be tightened at the same time, and the arms can freely change the mutual angle. Therefore, the distance between the bolt socket shaft bodies can be freely changed accordingly, and even if the pitches of the bolts and nuts are uneven, the bolts and nuts can be tightened by adjusting accordingly.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view showing an embodiment of the bolt / nut fastener of the present invention, FIG. 2 is a bottom view of the same, and FIG. 3 is a plan view of the same.

In FIG. 1, reference numeral 1 denotes a rotary shaft body coupled to a drive shaft of an electric drill 2 as shown in FIG. 5. A drive gear 3 is provided on the rotary shaft body 1, and the drive gear 3 is used as a center. The idle gear 4, which is an intermediate gear, is meshed with the left and right sides of the idle gear 4, and the idle gear 4 is meshed with the transmission gear 5, which is a driven gear.

The transmission gear 5 is connected to a bolt socket shaft body 6 having a bolt / nut fitting recessed portion 7 at its tip, and between the transmission gear 5 and the bolt socket shaft body 6. A steel ball 8 for a rotary limiter and a flat spring 9 were interposed. The flat spring 9 sets the torque of the bolt socket shaft body 6 depending on the number of bolts.

The rotating shaft 1 and the drive gear 3, the idle gear 4, the transmission gear 5, and the bolt socket shaft 6 are housed in an arm 10 made of a steel case. Further, two arms 10 are rotatably connected to each other about the rotary shaft 1 as a central axis.

The number of bolt socket shaft bodies 6 may be one in each arm 10. However, in the illustrated example, the transmission gear 5 connected to the bolt socket shaft bodies 6 is further meshed with the idle gear 4. Another transmission gear 5 is meshed with the idle gear 4 to provide another bolt socket shaft body 6 and two bolt socket shaft bodies 6 arranged side by side in the arm 10. Also, the arrangement is not particularly limited, and as shown in FIG. 4, the drive gear 3, the idle gear 4, and the transmission gear 5 of the rotary shaft 1 can be arranged side by side in a straight line.

Next, usage and operation will be described. As shown in FIG. 5, when the drive shaft of the electric drill 2 or the like is coupled to the rotary shaft body 1 and the electric drill 2 is started and the drive shaft is rotated, the drive gear 3 provided on the rotary shaft body 1 rotates. Is transmitted to the bolt socket shaft body 6 via the idle gear 4 and the transmission gear 5, and the bolt socket shaft body 6 rotates to tighten the bolt or nut fitted in the fitting recess 7 thereof.

In this case, since the rotation of the rotary shaft body 1 is simultaneously transmitted to the bolt socket shaft bodies 6 of the plurality of arms 10, a plurality of bolts or nuts (maximum 4 pieces) can be tightened at the same time.

Further, since the arms 10 can freely change the mutual angle about the rotary shaft body 1, the mutual intervals of the bolt socket shaft bodies 6 can be freely changed accordingly, and the pitch of the bolts and nuts can be changed. Even if they are not aligned, they can be fastened by adjusting accordingly.

Although not shown in the drawings, if the arms 10 are mutually bendable, the rotary shaft body 1 is placed at the end of one of the arms 10, and these arms 10 have mutually rotatable axes with respect to the rotary shaft body 1. It is also possible to install it in other places.

FIG. 7 shows an application example of the present invention, in which four arms 10 are connected to each other in a bending state. By doing so, the arm 10 can be expanded and contracted in an accordion manner, and the interval between the bolt socket shaft bodies 6 can be set more freely.

[0019]

[Effect of the device]

 As described above, the bolt / nut fastener of the present invention can easily perform the tightening suitable for the bolt / nut, and can simultaneously fasten a plurality of bolts / nuts. -When tightening nuts, the bolts and nuts can be tightened even if they are not aligned, which improves workability and quality.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a first embodiment of a bolt and nut fastener according to the present invention.

FIG. 2 is a bottom view showing the first embodiment of the bolt and nut fastener of the present invention.

FIG. 3 is a plan view showing a first embodiment of the bolt and nut fastener of the present invention.

FIG. 4 is a plan view showing a modification of the first embodiment of the bolt / nut fastener of the present invention.

FIG. 5 is a side view showing a usage state of the first embodiment of the bolt and nut fastener of the present invention.

FIG. 6 is an explanatory view showing a usage state of the first embodiment of the bolt / nut fastener of the present invention.

FIG. 7 is an explanatory view showing a usage state of the second embodiment of the bolt / nut fastener of the present invention.

[Explanation of symbols]

1 ... Rotary Shaft 2 ... Electric Drill 3 ... Drive Gear 4 ... Idle Gear 5 ... Conduction Gear 6 ... Bolt Socket Shaft 7 ... Mating Recess 8 ... Rotation Limiter Steel Ball 9 ... Sara Spring 10 ... Arm

Claims (1)

[Scope of utility model registration request] 1. A drive gear is provided on a rotary shaft connected to a drive shaft of an electric drill or the like, and the drive gear and the driven gear of the bolt socket shaft are transmitted by an intermediate gear. The bolt socket shaft body, the driven gear of the bolt socket shaft body, and the intermediate gear are stored in the arm,
This arm is a bolt and nut fastener characterized in that the arms are pivotally connected to each other.