JP3750114B2 - Intermediate insertion nut driver - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to an intermediate insertion type nut turning tool suitable for shortening an operation time for screwing a nut to a long bolt used as a suspension bolt or the like.
[0002]
[Prior art]
Conventionally, as this type of nut turning tool, a pipe cap nut tightening tool described in Utility Model Registration No. 3035286, an open end wrench described in Japanese Patent Laid-Open No. 7-112373, and the like have been proposed. The former tightening tool has a notch for inserting piping on the side surface, a socket that fits into a cap nut, two drive gears that rotate the socket, and a synchronous that rotates simultaneously with these drive gears. It consists of a drive gear, and enables the piping cap nut tightening operation to be speeded up.
[0003]
On the other hand, the latter open-end wrench is provided with a worm wheel around a socket having an opening on a side surface and a worm with a spur gear between a spar gear connected to an air motor and the worm wheel. According to this open end wrench, the socket having the opening can be continuously rotated.
[0004]
[Problems to be solved by the invention]
However, the former cap nut tightening tool for piping is provided with a pair of left and right drive gears so that the socket can be rotated without being obstructed by a notch provided in the socket. Therefore, this tool requires a minimum of four gears: a socket, a pair of drive gears, and a synchronous drive gear that simultaneously rotates these drive gears. Therefore, the tool is heavy and bulky.
[0005]
On the other hand, the latter open-end wrench requires many worms with a spur gear and other gears to rotate the worm wheel at the tip of the wrench. Therefore, this open end wrench is heavier and bulkier than the tightening tool.
[0006]
Moreover, although these tightening tools and open-end wrenches are both suitable for tightening piping cap nuts, they are not suitable for tightening nuts that are fastened to long bolts suspended on the ceiling or the like. That is, although any tool can be tightened by a small distance, it is not suitable for the operation of moving the tool in accordance with the movement of the nut. For example, when tightening a nut attached to a long bolt, it is necessary to move the tool in accordance with the nut that moves a long distance while holding the tool so that it does not come off the nut. However, the conventional tools not only have a structure in which the nut is easily removed from the socket, but also the tool itself is heavy and bulky, so it is extremely difficult to move these tools up and down according to the nut. become.
[0007]
Therefore, the present invention was created to solve the above-described problems, and can simplify the configuration of the tool. For example, even when a nut is attached to all screw bolts suspended from the ceiling or the like, it is very easy. It is an object of the present invention to provide an intermediate insertion type nut turning tool capable of rotating a nut.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the first means of the present invention has a notch 1A on the side surface, a socket 1 fitted on the nut N, and a position of the notch 1A of the socket 1 provided on the outer periphery of the socket 1. And a driving gear 3 that rotates the driving gear 2 in conjunction with the tip of the rotary shaft Q1 of the tightening tool Q. The driving gear 2 and the driving gear 3 are flat. An inlet 2B for introducing a long bolt R into a notch 1A formed in a vertical direction on the side of the socket 1 from a notch 2A formed with a gear and formed obliquely with respect to the tooth surface of the dynamic gear 2 is provided as a dynamic gear. 2 is provided on the inner surface of the socket 1 to be engaged with nuts N having different diameters, and the retaining rib 1C is engaged with the upper or lower surface of the nut N fitted to the socket 1. Is protruded from the inner surface of the socket 1 and the case P is Connecting the $ 5, the handle 5 is supported with one hand, those provided to operate the tool Q tightening with the other hand.
[0009]
According to the present invention, the nut N introduced into the socket 1 from the notches 2A and 1A is fitted into the fitting recess 1B and moved up and down along the long bolt R while being locked by the locking rib. Is.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The tool of the present invention has a configuration in which a socket 1, a dynamic gear 2, and a drive gear 3 are combined (see FIG. 1).
[0011]
The socket 1 has a notch 1 </ b> A on the side surface and is fitted on a nut N, and a dynamic gear 2 is fixed to the outer periphery of the socket 1. On each side surface of the socket 1 and the dynamic gear 2, notches 1A and 2A for introducing the long bolt R are provided.
[0012]
The notch 1A position of the socket 1 and the notch 2A position of the dynamic gear 2 are set to the same position, and a long bolt R is introduced from the side surface of the dynamic gear 2 to the inside of the socket 1.
[0013]
In the embodiment shown in the figure, the dynamic gear 2 and the drive gear 3 are formed by spur gears. In this embodiment, an introduction port 2B for introducing a long bolt R into a notch 1A provided in the vertical direction on the side of the socket 1 from a notch 2A formed obliquely with respect to the tooth surface of the dynamic gear 2 is provided as a dynamic gear. 2 is provided.
[0014]
A fitting recess 1 </ b> B that fits into the nut N is provided inside the socket 1. The illustrated fitting recess 1B is provided with fitting recesses 1B having a plurality of diameters so as to be fitted to nuts N having different diameters (see FIG. 1). Further, a locking rib 1C that locks to the upper surface or the lower surface of the nut N fitted in the fitting recess 1B is provided on the inner surface of the socket 1 (see FIG. 2).
[0015]
The case body P houses and arranges the socket 1, the dynamic gear 2, and the drive gear 3 (see FIG. 1). The illustrated case body P includes a storage portion P2 that stores and installs each member, and a lid body P3 that covers the upper opening of the storage portion P2. A cutout opening P1 is provided in a part of the case body P. In the present invention, the nut N screwed to the long bolt R is introduced into the socket 1 from the notch insertion port P1, and is rotated by the rotation of the tightening tool Q.
[0016]
Reference numeral 5 denotes a handle connected to the side surface of the case body P. When using the present invention, the operator supports the handle 5 with one hand and operates the tightening tool Q with the other hand (see FIG. 3).
[0017]
The drive gear 3 is a gear that is rotated using a tightening tool Q such as an electric screwdriver or an electric drill, and is provided with a connecting recess 3A that is coupled to the tip of the rotation shaft Q1 of the tightening tool Q (see FIG. 4). This connection recessed part 3A has comprised the shape fitted to the rotating shaft Q1 with an angular cross-section. In the example of illustration, the stopper 4 which presses and urges the steel ball 4A fitted to the groove part provided in the side surface of the rotating shaft Q1 with the spring 4B is provided.
[0018]
Moreover, it is also possible to form the dynamic gear 2 and the drive gear 3 with a spiral gear (not shown).
[0019]
【The invention's effect】
The present invention achieves the original object by being configured as described above.
[0020]
That is, a socket 1 having a notch 1A on the side surface and fitted on the nut N, a dynamic gear 2 provided on the outer periphery of the socket 1 and having a notch 2A at the same position as the notch 1A of the socket 1, Since the drive gear 3 that rotates the moving gear 2 in conjunction with the tip of the rotary shaft Q1 of the tightening tool Q is provided, the configuration of the tool can be simplified, and a lightweight and compact tightening tool is provided. be able to.
[0021]
Further, since the handle 5 is connected to the side surface of the case body P, the handle 5 is supported by one hand, and the tightening tool Q is operated by the other hand, it can be suspended from the ceiling or the like , for example. Even when nuts are attached to all screw bolts, the nut can be rotated very easily.
[0022]
Further, since the dynamic gear 2 and the drive gear 3 are formed as spur gears, and the notch 2A is formed obliquely with respect to the tooth surface of the dynamic gear 2, the teeth of the dynamic gear 2 and the drive gear 3 are always teeth. The combined state can be maintained. Furthermore, since the introduction port 2B is provided between the notch 2A of the dynamic gear 2 and the notch 1A of the socket 1, the work of introducing the long bolt R into the socket 1 can be easily performed.
[0023]
Furthermore, since the several fitting recessed part 1B fitted to the nut N from which a diameter differs is provided, it fits to the nut N from which a diameter differs, respectively.
[0024]
Since the locking rib 1C for locking to the upper surface or the lower surface of the nut N is provided on the inner surface of the socket 1, the nut N is securely held while the nut N moves along the long bolt R. And can be easily tightened even when moving over a long distance.
[0025]
As described above, according to the present invention, the configuration of the tool can be simplified. For example, even when a nut is attached to all screw bolts suspended from a ceiling or the like, the nut can be rotated very easily. Such a beneficial effect is obtained.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
FIG. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is an exploded perspective view showing a use state of the present invention.
FIG. 4 is a longitudinal sectional view showing an embodiment of the drive gear of the present invention.
[Explanation of symbols]
P Case body P1 Notch insertion slot P2 Storage part P3 Cover Q Tightening tool Q1 Rotating shaft R Long bolt N Nut 1 Socket 1A Notch 1B Fitting recess 1C Locking rib 2 Dynamic gear 2A Notch 2B Inlet 3 Drive Gear 4 Stopper 4A Steel ball 4B Spring 5 Handle

Claims (1)

A socket that has a notch on the side and is externally fitted to the nut, a moving gear that is provided on the outer periphery of the socket and that has a notch at the same position as the notch of the socket, and interlocks with the tip of the rotary shaft of the tightening tool A drive gear for rotating the moving gear, and the moving gear and the driving gear are formed by spur gears, and are provided in a vertical direction on the side of the socket from a notch formed obliquely to the tooth surface of the moving gear. An inlet for introducing a long bolt into the cutout is provided in the dynamic gear, and the socket is provided with a plurality of fitting recesses on the inner surface of the socket to be fitted to nuts having different diameters. A locking rib that locks to the upper or lower surface protrudes from the inner surface of the socket, connects the handle to the side of the case body, supports the handle with one hand, and operates the tightening tool with the other hand It is characterized in that provided as Intermediate insert nut driving tool.

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