JP3087792U - Joint for automatic screwdriver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily replace a tip tool suitable for various kinds of work, wear a peripheral groove at a rear end of a long shaft, bend a long shaft, or obtain a long shaft. Even if it breaks from the circumferential groove, it can be replaced with a new one so that it can be mounted on the mounting part of the automatic screwdriver, and these various operations can be performed accurately in a stable state Provide automatic screwdriver joints. SOLUTION: A front holder 2 is screwed to a front end of a long pipe 1, and a front end of a short shaft 3 rotatably inserted into the front holder 2 is connected to a connecting portion 3 with a chuck body C with a gripper.
a, the rear holder 4 is screwed to the rear end of the long pipe 1, and the rear end of the long shaft 5 rotatably inserted into the rear holder 4 is connected to the rotation drive shaft S of the automatic driver body A. , And the front end of the long shaft 5 is fitted into the rear end of the short shaft 3.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a joint for an automatic screwdriver that connects an automatic screwdriver such as an electric screwdriver or a pneumatic screwdriver with a chuck body to which various types of tools such as a drill, a bit, and a grinding wheel with a shaft are attached.

[0002]

[Prior art]

 Conventionally, when drilling holes in high places or narrow places, screwing screws, or polishing with an automatic screwdriver indoors or outdoors, long drills, bits, shafts, etc. This was done by detachably attaching various tools, such as a whetstone, to an automatic screwdriver. In other words, these drills and bits are provided with a circumferential groove at the rear end of the hexagon shaft, and the rear end is inserted into the mounting part of the automatic screwdriver, and is mounted on the mounting part by clamping the peripheral groove. Was.

[0003] Further, in the above-mentioned work, various tip tools such as a drill, a bit, and a grindstone having a short shaft length are attached to a chuck with a holding claw having a hexagonal shaft 11 having a long shaft length as shown in FIG. This was done by attaching and detaching to an automatic screwdriver via C. That is, the claw chuck C is provided with a circumferential groove at the rear end of the hexagonal shaft 11, and the rear end is inserted into the mounting section of the automatic screwdriver to clamp the circumferential groove, thereby mounting the chuck on the mounting section.

[0004]

[Problems to be solved by the invention]

 By the way, the tip tool used when performing the above-mentioned work should be a tip tool suitable for the work or a drill diameter and bit shape according to the size of the hole, the type of bit to be screwed, the state of the location to be polished, etc. It must be replaced with a fine-grained tip tool.

[0005] However, if a tool having a long shaft length is detachably attached to an automatic screwdriver as in the past, the problem is that it is difficult to replace the tool at a high place or a narrow place because the tool is bulky. Had.

In addition, when a conventional tip tool having a short shaft length is detachably attached to an automatic screwdriver via a chuck C with holding claws in which a long hexagonal shaft 11 is fixed to the rear end as in the conventional case. In some cases, the peripheral groove at the rear end of the hexagonal shaft 11 that is inserted and clamped into the mounting portion of the automatic screwdriver wears, which may hinder the mounting of the automatic screwdriver on the mounting portion, or may cause long-term use. In some cases, the hexagonal shaft 11 may be bent or the hexagonal shaft 11 may be broken from the peripheral groove. In such a case, the hexagonal shaft 11 is also fixed to the rear end of the chuck C with grippers. Therefore, there is a problem that the automatic screwdriver cannot be mounted on the mounting portion because it cannot be replaced.

Furthermore, in any of the above-mentioned conventional mounting states, the tip tool having a long shaft length and the hexagon shaft 11 having a long shaft length of the chuck C with a claw cannot be supported by hand, and the above-mentioned various operations are not performed. There was a problem that it could not be performed accurately in a stable state.

[0008] In view of the above, the present invention is to solve the above-mentioned conventional problems, and to perform various operations such as drilling holes in high places or narrow places, screwing screws, and polishing. In addition, easily change to a tip tool with a short shaft length and low bulk that is suitable for the work, or a tip tool that matches the size of the hole, the type of bit to be screwed, the condition of the place to be polished, etc. And the peripheral groove at the rear end of the long shaft corresponding to the hexagonal shaft of the chuck with grippers is worn, the long shaft is bent, or the long shaft is broken from the part of the circumferential groove. The new driver is replaced with a new one, so that it can be mounted on the mounting part of the automatic screwdriver, and furthermore, these various operations can be performed accurately in a stable state. The purpose of this is to provide a joint.

[0009]

[Means for Solving the Problems]

 Therefore, the joint for an automatic screwdriver of the present invention has a front holder 2 screwed to a front end of a long pipe 1 and a front end of a short shaft 3 rotatably inserted into the front holder 2 and a chuck with a gripper. A rear holding member 4 is screwed to a rear end of the long pipe 1 as a connecting portion 3a to the main body C, and a rear end of the long shaft 5 rotatably inserted into the rear holding member 4 is connected to the automatic driver main body A. A connecting portion 5a with the rotary drive shaft S, and the front end of the long shaft 5 is fitted into the rear end of the short shaft 3.

In the joint for an automatic driver according to the present invention, the short shaft 3 is provided with a fitting hole 3 b at the rear end corresponding to the front end of the long shaft 5, and is further prevented from coming off from the front holding body 2. And a ring 6 attached thereto.

Further, in the joint for an automatic driver of the present invention, the long shaft 5 can be a hexagonal shaft, and the fitting hole 3b of the short shaft 3 can be a hexagonal hole.

In the joint for an automatic driver of the present invention, the long shaft 5 is a circular shaft, the front and rear ends of the circular shaft are hexagonal heads, and the fitting holes 3b of the short shaft 3 are hexagonal holes. You can also.

[0013]

[Embodiment of the invention]

 Hereinafter, an embodiment of the joint for an automatic driver of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the joint for an automatic screwdriver of the present invention has a short shaft in which a front holder 2 is screwed to a front end of a long pipe 1 and rotatably inserted into the front holder 2. The front end of 3 is a connecting portion 3a with the chuck body C with grippers. The joint for an automatic screwdriver according to the present invention has a rear holder 4 screwed to the rear end of the long pipe 1 and a rear end of the long shaft 5 rotatably inserted into the rear holder 4. The connecting portion 5a of the dynamic driver main body A and the rotary drive shaft S is provided. Further, in the joint for an automatic driver of the present invention, the front end of the long shaft 5 is fitted into the rear end of the short shaft 3.

The long pipe 1 is made of a metal such as aluminum alloy or brass, but may be made of a synthetic resin having excellent strength. In the case shown in the figure, the length is about 20 cm. , Can be longer if necessary. The long pipe 1 is usually a round pipe, but may be a polygonal pipe such as a hexagonal pipe if necessary.

The front holder 2 is a short pipe made of a metal such as stainless steel, and a male screw part 2 a formed on a rear outer peripheral surface is screwed to a female screw part 1 a formed on a front end inner peripheral surface of the long pipe 1. It is assumed that it is worn.

The short shaft 3 is a stepped round shaft made of a metal such as stainless steel, and has a length of about 10 cm in the figure, but may be slightly longer or shorter as necessary. The front end of the short shaft 3 is formed into a threaded portion to serve as a connecting portion 3a to the chuck body C with a claw, and this screw portion is screwed into a screw hole (not shown) of the chuck body C with a claw. Although the attachment type is used, the connection portion 3a may be used as an insertion portion, and the connection portion 3a may be inserted into an insertion hole of the chuck body C with a gripper. Further, the short shaft 3 is provided with a fitting hole 3b at the rear end which matches the front end of the long shaft 5. The fitting hole 3b of the short shaft 3 is a hexagonal hole that matches the hexagonal shaft of the long shaft 5 or a hexagonal head of a circular shaft as described later. In addition, the short shaft 3 is provided with a step 3c and a ring 6 for retaining from the front holding body 2.

The rear holder 4 is a short pipe made of a metal such as stainless steel. The male screw part 4 a formed on the outer peripheral surface of the front part is replaced with the female screw part 1 b formed on the inner peripheral surface of the rear end of the long pipe 1. It is assumed to be screwed into.

The long shaft 5 may be a hexagonal shaft made of metal such as stainless steel or a circular shaft, and the front and rear ends of the circular shaft may be hexagonal heads, as shown in the figure. In this example, it is about 30 cm, but may be longer or shorter as needed. Then, the rear end of the long shaft 5 is used as a fitting portion for forming a connecting portion 5a with the automatic driver body A, and this fitting portion is fitted into a fitting hole (not shown) of the automatic driver body A. And That is, a peripheral groove 5c is provided at the rear end of the long shaft 5, and the peripheral groove 5c is inserted into the insertion hole of the automatic driver main body A while being sandwiched. A commercially available automatic screwdriver main body A generally has a form in which the rear end of the long shaft 5 is fitted and connected, and such a form is preferable, but the present invention is not limited to this form. . Further, the long shaft 5 has an insertion head 5b formed at the front end so that the front end of the long shaft 5 is inserted into the insertion hole 3b at the rear end of the short shaft 3, and is guided by the insertion head 5b. The front end is adapted to be easily inserted into the insertion hole 3b at the rear end of the short shaft 3. The long shaft 5 is provided with a ring 7 for retaining the same from the rear holder 4.

The chuck body C with gripping claws includes a gripping claw 8 having three or four legs, a sleeve 9 into which the gripping claw 8 is inserted, chucking by the gripping claw 8, and chucking thereof. An adjustment ring 10 for releasing the tool is provided. The adjustment ring 10 is moved back and forth by a rotating operation to tighten or loosen the gripping claw 8 so that a tip tool T such as a drill, a bit or a grindstone can be used. They are chucked and removable.

The main body A of the automatic driver is a hand-held electric driver or a pneumatic driver which electrically or rotationally drives the rotary drive shaft S.

The joint for an automatic driver of the present invention configured as described above is used as follows.

First, in the joint for an automatic screwdriver of the present invention, a chuck body C with claws is connected to the front end of the short shaft 3, and the automatic screwdriver body A is connected to the rear end of the long shaft 5. Then, a tip tool T such as a drill, a bit, or a grindstone, which is suitable for drilling holes, screwing screws, or polishing, is attached to the chuck body C with grippers.

Next, as shown in FIG. 6, holding the automatic screwdriver body A with one hand, supporting the long pipe 1 with the other hand, drilling holes in high places and narrow places, screwing screws, The tip tool T attached to the chuck body C with grippers is pressed against a portion to be polished. Then, when the switch of the automatic screwdriver body A is turned on, the tip tool T is driven, and it is possible to perform operations such as drilling holes, screwing screws, and polishing.

In this case, since the long pipe 1 can be supported with one hand, a stable state can be maintained even when drilling holes in high places or narrow places, screwing screws, or polishing. Can be done accurately. Further, even in the case where holes are drilled, screws are screwed in, or polishing is performed one after another or alternately, the tip tool T attached to the chuck body C with grippers is used to remove the holes. The work can be performed immediately by simply changing the tip tool T according to each work such as opening, screwing in, or polishing.

During the above operation, even if the circumferential groove 5c at the rear end of the long shaft 5 is worn, the long shaft is bent, or the long shaft is broken from the portion of the circumferential groove, The long shaft 5 can be replaced by another new long shaft 5. That is, the connection between the rear end of the long shaft 5 and the automatic driver body A is released, the front holder 2 screwed to the front end of the long pipe 1 is loosened, and the front holder 2 is connected to the long pipe 1. Then, the long shaft 5 is pulled out of the long pipe 1. Then, another new long shaft 5 is inserted from the front end of the long pipe 1 so that the rear end of the long shaft 5 protrudes from the rear holding member 4, and the front end of the long pipe 1 is again turned on. Then, the front end of the long shaft 5 may be inserted into the insertion hole 3b of the short shaft 3 secured to the front holder 2 by screwing the front holder 2. In this case, another new long shaft 5 to be replaced can be replaced with a commercially available hexagonal bit having a longer shaft length (a hexagonal bit with a groove).

[0027]

[Effect of the invention]

 The joint for an automatic screwdriver of the present invention is constructed as described above, and performs various operations such as drilling holes in high places and narrow places, screwing screws, polishing, etc. In this case, it is easy to use a tool with a short shaft length and low bulk that is suitable for the work or a tool that is suitable for the size of the hole, the type of bit to be screwed, the condition of the location to be polished, etc. If the circumferential groove at the rear end of the long shaft is worn, the long shaft is bent, or the long shaft is broken from the circumferential groove, replace it with a new one. Therefore, it became possible to mount it on the mounting part of the automatic driver, and it was also possible to perform these various operations accurately in a stable state.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state in which a chuck body with a gripper is connected to a front end of an automatic driver joint of the present invention and an automatic driver body is connected to a rear end.

FIG. 2 is a half sectional view of a front holder of the joint for an automatic driver of the present invention.

FIG. 3 is a half sectional view of a short shaft of the joint for an automatic screwdriver according to the present invention.

FIG. 4 is a half sectional view of the rear holder of the joint for an automatic driver of the present invention.

FIG. 5 is a side view of the long shaft of the joint for an automatic driver of the present invention.

FIG. 6 is an explanatory view showing a use state of the joint for an automatic driver of the present invention.

FIG. 7 is a side view showing a state in which a tip tool is attached to a front end of a conventional chuck with a holding claw having a long hexagonal shaft and an automatic screwdriver body is connected to a rear end.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Long pipe 2 Front holder 3 Short shaft 3a Connecting part 3b Fitting part 3c Step 4 Rear holder 5 Long shaft 5a Connecting part C Chuck body with gripper A Automatic driver body S Rotary drive shaft

Claims (4)

[Utility model registration claims] A front holder (2) is screwed to a front end of a long pipe (1), and a front end of a short shaft (3) rotatably inserted into the front holder (2) is provided with a gripper. A long part which is used as a connection part (3a) with the chuck body (C), a rear holder (4) is screwed to the rear end of the long pipe (1), and is rotatably inserted into the rear holder (4). The rear end of the shaft (5) is a connecting portion (5a) with the rotary drive shaft (S) of the automatic driver body (A), and the front end of the long shaft (5) is the rear end of the short shaft (3). A joint for an automatic screwdriver, characterized in that it is fitted into a joint. 2. A short shaft (3) having a fitting hole (3b) at the rear end corresponding to the front end of the long shaft (5), and for preventing the short shaft (3) from coming off from the front holder (2). The joint for an automatic screwdriver according to claim 1, wherein the step (3c) and the ring (6) are attached. 3. The joint for an automatic screwdriver according to claim 1, wherein the long shaft (5) is a hexagonal shaft, and the fitting hole (3b) of the short shaft (3) is a hexagonal hole. 4. The long shaft (5) is a circular shaft, the front and rear ends of the circular shaft are hexagonal heads, and the fitting hole (3b) of the short shaft (3) is a hexagonal hole. The joint for an automatic driver according to claim 1.