JPH09201777A - Joint tool for motor-driven turning tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continue work as a joint tool is fitted all the time by providing a maintaining means with releasable lock-pin by which the front body can be maintained in a condition in series with the rear body, when the front body has been positioned in the same axial line with the rear body. SOLUTION: When a base cylinder 7 and a rear body 4 are changed from a straight condition to a bent condition, the lock pin 6 is depressed downward against an embedded spring 9 so that the projected part of the top part 6' is sunk. Then, the inserted cylinder 8 becomes slidable to the left overriding the top part 6' of the lock pin 6. Further, since the top part 6' engages with the engaging groove 12 that has been provided to the inner circumferential wall of the inserted cylinder 8, so that the opening end 8' of the base side of the cylinder 8 keeps a separated distance with the opposite opening end 4' of the front part of the receiving flexible joint part 5b of a rear body 4, and accordingly the front body 2 and the flexible joint 5 produce a flexible effect and they can be bent at a desired angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint tool attached to, for example, a hand type electric rotating tool.

[0002]

2. Description of the Related Art A joint tool (hereinafter referred to as a conventional example) having a universal joint attached to the front end of an electric rotating tool has been conventionally proposed.
This conventional example is attached to the drive unit at the front end of the electric rotating tool,
For example, when a driver bit is attached to the front end and is used, when the main body of the electric rotating tool interferes with the corner portion (Fig. 3 illustrates this embodiment, in such a case, the electric rotating tool is used. The main body of is an obstacle.) That is, since the universal joint can be used at a desired angle by using the universal joint, the main body of the electric rotating tool does not get in the way.

However, such a conventional example has the following drawbacks when it is used in a linear shape without being bent in the middle.

That is, when the conventional universal joint portion of the conventional example is used in a slightly bent state during work, the tip of the driver bit swings, and the screw that is about to be screwed by the driver bit also swings. Therefore, in order to specify the screwing position of the screw, the driver bit is temporarily put on the driver's hand to stop the shake (at this moment, both hands work) and the screw is screwed in. If there are several screws, this operation can be repeated, but if there are dozens of screws, it is better to remove the conventional example once and attach the driver bit directly to the electric rotating tool rather than touching the driver bit one by one like this. Will improve workability.

However, when the driver bit is directly attached to the electric rotating tool as described above, the main body of the electric rotating tool may be obstructed. Therefore, in this case, the conventional example must be used again. I will have to do it.

That is, in the conventional example, the driver bit must be touched each time, or the conventional example of attaching / detaching and attaching / detaching the driver bit must be performed each time, which is a complicated task. , Work efficiency is reduced.

The present invention provides a joint tool for an electric rotating tool which solves the above drawbacks.

[0008]

The gist of the present invention will be described with reference to the accompanying drawings.

Various tools such as driver bits and drills 1
A front body 2 to which is connected and a rear body 4 to which the electric rotating tool 3 is connected.
Which are connected to each other through a universal joint 5,
When the rear body 4 and the rear body 4 are located on the same axis, a maintenance means a with a releasable lock pin 6 for maintaining the front body 2 and the rear body 4 in series is provided. The present invention relates to a joint tool for moving equipment.

Further, in the joint tool for electric rotation according to claim 1, the open end 8 ′ of the fitted cylinder 8 slidably fitted in the base cylinder 7 of the front body 2 and the open end 4 of the rear body 4. 'And a lock pin 6 which is pushed up by an embedded spring 9 and has an upper part protruding from the base cylinder 7 of the end face of the fitted cylinder 8 when they are located in a butted state with respect to each other. The present invention relates to a joint tool for an electric rotating tool.

A connecting portion 10 to which various tools 1 such as a driver bit and a drill are connected is provided on the front side of the front body 2, and a base cylinder 7 having a universal joint portion 5a is provided on the base side of the front body 2.
A pin hole 11 is formed at a predetermined position of this base cylinder 7, and this pin hole
A lock pin 6 having an apex 6'projecting from the outer periphery of the base cylinder 7 is provided in 11 by a buried spring 9 so that the lock pin 6 can be pushed in and out. A slidable fitting cylinder 8 is fitted on the base cylinder 7, and an apex 6 ′ of the lock pin 6 is engaged with the inner peripheral surface of the fitting cylinder 8 to fix the slide of the fitting cylinder 8. The rear body 4 is provided with a groove 12, on the other hand, a concave universal joint 5b into which the universal joint 5a is fitted, is provided on the front side, and a connecting portion 16 to be connected to the electric rotating tool 3 is provided on the rear side. The universal joint portion 5 is formed by connecting the universal joint 5a to the universal joint portion 5b, and the front body 2 and the rear body 4 are flexibly coupled to each other to form the base cylinder 7
The rear end opening end 8 ′ of the fitted tube 8 for sliding the fitted tube 8 rearward is brought into contact with the front end opening end 4 ′ of the rear body 4 provided with the universal joint portion 5b, and the lock pin 6 A joint tool for an electric rotating tool, characterized in that the base cylinder 7 and the rear body 4 are configured to be maintained in series by fixing the fitted cylinder 8 by protruding. .

Further, in the joint tool for an electric rotating tool according to any one of claims 1 to 3, the fitting cylinder 8 has a substantially stepped shape in which both front and rear end portions 8a and 8b have a large diameter. The present invention relates to a joint tool for an electric rotating tool, which is characterized in that the fitted tube 8 is adopted.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be briefly described with reference to the drawings, which are examples of embodiments, showing the functions and effects.

The front body 2 and the rear body 4 are positioned on the same axis, and the positional relationship is maintained by the position maintaining means a to perform the work, or the position maintaining means a is released to operate the front body 2 and the front body 2. The rear body 4 is set at a predetermined angle to work.

Therefore, there are problems caused by using the universal joint,
That is, the work is interrupted by the attachment / detachment of the joint tool incorporating the universal joint described in the defect of the conventional example, the attachment / detachment of the driver bit, etc.
Alternatively, the problems of non-safety due to two-handed work, restrictions on work posture, etc. are solved, and as a result, only the plus side that an arbitrary angle can be obtained by the universal joint is given, thus expanding the work area and efficiency of the electric rotating tool. Will be further improved.

Further, in the invention described in claim 2, in addition to the function and effect of the invention described in claim 1, the opening end of the fitted cylinder and the opening end of the rear body are aligned on the same axis line by the protrusion and the depression of the lock pin. It is easy to maintain the butt state or release the butt state, so that the work can be favorably performed.

Further, in the third aspect of the present invention, the lock pin is projected by pushing up the embedded spring to fix the fitted cylinder, so that the series state of the base cylinder and the rear body can be firmly maintained. Also, the in-line state of the base cylinder and the rear body can be easily released only by pushing the lock pin against the push-up of the embedded bar, so that the work can be favorably performed.

Further, in the invention described in claim 4, in addition to the effects of the invention described in claims 1 to 3, the fitted cylinder is formed in a substantially stepped shape in which both front and rear ends have a large diameter. For example, since the shape of the fitting cylinder is easy to pinch when pressing the fitting cylinder such as when sliding the fitting cylinder, the fitting cylinder can be slid satisfactorily and the work can be performed efficiently.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 and 3 show an example of the embodiment of the present invention, which will be described below.

The front body 2 will be described.

Various tools such as a driver bit and a drill 1
Is provided on the front side of the front body 2, a base cylinder 7 having a universal joint 5a is provided on the base side of the front body 2, and a pin hole 11 is formed at a predetermined position of the base cylinder 7. A lock pin 6 having a top 6 ′ protruding from the outer periphery of the base cylinder 7 is provided in the pin hole 11 by an embedded spring 9 so as to be capable of projecting and retracting.
When the is pushed in, the fitted cylinder 8 that can slide over the lock pin 6 with respect to the base cylinder 7 is fitted to the base cylinder 7, and the top portion 6 ′ of the lock pin 6 is attached to the inner peripheral surface of the fitted cylinder 8. Is provided with an engaging groove 12 for fixing the slide of the fitted tube 8, and on the other hand, a concave receiving universal joint portion 5b into which the universal joint portion 5a is fitted is provided on the front side. Connected part to be connected
16 is provided on the rear side, the rear body 4 is provided, and the universal joint portion 5a is connected to the receiving universal joint portion 5b to form the universal joint portion 5, and the front body 2 and the rear body 4 are flexibly coupled. , The opening end 8 ′ of the fitted tube 8 for sliding the fitted tube 8 rearward with respect to the base tube 7 is brought into contact with the opening end 4 ′ of the rear body 4 provided with the universal joint portion 5 b, and the lock pin Fitting cylinder 8 by projecting 6
Is fixed so that the base cylinder 7 and the rear body 4 can be maintained in series.

The front body 2 is composed of a base cylinder 7 and a fitting cylinder 8. The base cylinder 7 is formed with a fitting hole 13 as a connecting portion 10 into which various tools 1 such as a driver bit and a drill are fitted at the front end, and a spherical universal joint portion 5a constituting the universal joint 5 at the rear end. To provide. Reference numeral 20 is a pair of upper and lower tapered holes,
The tapered hole 20 is vertically communicated with a communicating portion 21. This universal joint portion 5a and the universal joint portion 5b described later
The universal joint 5 composed of and has the same structure as the universal joint proposed in the past. Further, reference numeral 17 is a steel ball that is inserted into the fitting hole 13 and presses a driver bit, for example, and reference numeral 18
Is a C-shaped leaf spring, and reference numeral 19 is a retaining ring for the fitted tube 8.

The fitted tube 8 is composed of the front body 2 and the electric rotating tool 3.
The first function is to hold the base cylinder 7 during rotation so that the base cylinder 7 does not shake in order to rotate while maintaining a certain angle, but as shown in FIGS. 8b is formed in a substantially stepped shape with a large diameter. Specifically, the substantially stepped shape means that when the operator picks up the fitting tube 8 with his thumb and forefinger, the thumb is recessed with respect to the front and rear end portions 8a, 8b of the fitting tube 8 having a large diameter. It has a width (size) that exactly matches the recessed portion (recess 8c). Incidentally, in the present embodiment, considering that the portion to which the force is most applied when sliding the fitted tube 8 is the thumb, the concave portion 8 is considered.
Although c is preferentially designed to be the thumb width, the concave portion 8c of the fitted tube 8 can be appropriately designed by, for example, having a width (size) that matches the index finger.

Therefore, when the fitting cylinder 8 is slid, the fitting cylinder 8 is formed in a substantially stepped shape to facilitate sliding, and of course, oil is attached to the fitting cylinder 8. For example, even if the fitted tube 8 becomes slippery, a sufficient anti-slip effect is exerted and it can slide smoothly (when the fitted tube has a cylindrical shape, it slides well. Cannot slide on.)

The rear body 4 will be described.

The rear body 4 has a concave receiving universal joint portion 5b which forms a universal joint 5 together with the universal joint portion 5a at the front end thereof, and has a rear end which is, for example, a hand-type electric pivot member as the electric pivot member 3. A rod-shaped connecting portion that is fitted into the chuck portion 14 of the tool 3.
16 are formed.

The recessed universal joint portion 5b is formed internally.
15 is provided, and between the opposing peripheral walls of the concave universal joint portion 5b, when the universal joint portion 5a is fitted into the concave universal joint portion 5b, a taper hole of the universal joint portion 5a is formed.
A shaft pin 22 is provided which is inserted into 20 and connects the front body 2 and the rear body 4.

In the state shown in FIG. 2, the rear body 4 and the front body 2 having such a structure are connected to each other so that their mutual axes are exactly aligned and aligned.

Since this embodiment has the above-mentioned structure, it has the following effects.

The front body 2 and the rear body 4 are coupled to each other, the rod-shaped coupling portion 16 of the rear body 4 is fitted into the chuck portion 14 of the electric rotating tool 3, and a driver bit is fitted into the fitting hole 13 of the front body 2, for example. It is inserted and the electric rotating tool 3 is started to perform a predetermined work.

When it is used in the corner portion as shown in FIG. 3, that is, when the main body of the electric rotating tool 3 interferes and the front body 2 and the rear body 4 cannot be used in a straight line (on the same axis). 1 is used by bending the base cylinder 7 and the rear body 4 from the state shown in FIG.

When the base cylinder 7 and the rear body 4 are bent from the state shown in FIG. 1 to the state shown in FIG. 2, the lock pin 6 is pressed downward against the embedded spring 9 to project the top 6 '. When the portion is retracted, the fitted tube 8 can slide over the top 6 ′ of the lock pin 6 and slide to the left, and engages with the engaging groove 12 provided on the inner peripheral wall surface of the fitted tube 8 to fit the fitted tube. Open end 8'on the base side of 8
Holds a separation distance from the opening end 4'of the front end of the universal joint 5b of the rear body 4 facing each other, so that the front body 2 and the universal joint 5 exhibit a universal joint action and can be bent at a desired angle. It will be possible.

When the base cylinder 7 and the rear body 4 which are bent in the state of FIG. 2 are returned to the serial state of FIG. 1, the base cylinder 7 and the universal joint portion 5b are returned to the linear shape and the fitting is performed. When the cylinder 8 is slid to the right in FIG. 1, when the open end 8 ′ of the fitted tube 8 comes into contact with the open end 4 ′ of the rear body 4, the lock pin 6 moves to the rear end portion of the fitted tube 8. Since it is located at the claw, the lock pin 6 projects and the front body 2 and the rear body 4 maintain a linear relationship.

Therefore, according to the present embodiment, the base cylinder 7 and the universal joint 5b can be operated at a predetermined angle, and of course, the electric cylinder can be maintained in series by sliding the fitted cylinder 8. It becomes a joint tool of.

[0035]

Since the present invention is configured as described above, there is a problem caused by using a universal joint, that is, work for attaching / detaching a joint tool incorporating the universal joint described in the drawback of the conventional example, attaching / detaching a driver bit, etc. The problem of non-safety due to interruption of both hands, restriction of work posture, etc. is solved, and as a result, only the positive side that an arbitrary angle can be obtained by the universal joint is given, so that the work area of the electric rotating tool can be improved. Expansion and efficiency will be further improved.

Further, in the invention described in claim 2, in addition to the function and effect of the invention described in claim 1, the opening end of the fitted cylinder and the opening end of the rear body are aligned on the same axis line due to the protrusion and the depression of the lock pin. It is easy to maintain the butt state or release the butt state, so that the work can be favorably performed.

According to the third aspect of the invention, the lock pin is pushed out by pushing up the embedded spring to fix the fitted cylinder, so that the series state of the base cylinder and the rear body can be firmly maintained. Also, the in-line state of the base cylinder and the rear body can be easily released only by pushing the lock pin against the push-up of the embedded spring, so that the work can be favorably performed.

In addition, in the invention described in claim 4, in addition to the effects of the invention described in claims 1 to 3, the fitted cylinder is formed into a substantially zigzag shape in which both front and rear ends have a large diameter. For example, since the shape of the fitting cylinder is easy to pinch when pressing the fitting cylinder such as when sliding the fitting cylinder, the fitting cylinder can be slid satisfactorily and the work can be performed efficiently.

[Brief description of drawings]

FIG. 1 is a sectional view showing a use state of the present embodiment.

FIG. 2 is a sectional view showing a use state of the present embodiment.

FIG. 3 is an explanatory diagram of a usage state of the present embodiment.

[Explanation of symbols]

 1 Tool 2 Front Body 3 Electric Rotating Tool 4 Rear Body 4'Open End 5 Universal Joint 5a Universal Joint Section 5b Universal Joint Section 6 Lock Pin 6'Top 7 Base Tube 8 Fitting Tube 8'Open End 8a End 8b End 9 Buried bar 10 Connection part 11 Pin hole 12 Engagement groove 16 Connection part

Claims (4)

[Claims] 1. A front body, to which various tools such as a driver bit and a drill are connected, and a rear body, which is connected to an electric rotating tool, are connected to each other through a universal joint. A joint tool for an electric rotating tool, comprising: a retaining means a with a releasable lock pin for maintaining the front body and the rear body in series when and are positioned on the same axis. 2. The joint tool for electric rotation according to claim 1, wherein the open end of the fitted cylinder slidably fitted in the base cylinder of the front body and the open end of the rear body are butted against each other on the same axis. A joint tool for an electric rotating tool, characterized in that a lock pin, which is pushed up by an embedded spring and has an upper part protruding, is provided so as to be capable of projecting and retracting in a base cylinder of the end surface of the fitted cylinder when positioned at. 3. A connecting portion for connecting various tools such as a driver bit and a drill is provided on the front side of the front body, and a base cylinder having a universal joint portion is provided on the base side of the front body, and at a predetermined position of this base cylinder. A pin hole is bored, and a lock pin whose top projects from the outer periphery of the base cylinder is provided by means of an embedded spring so that the lock pin can be projected and retracted, and when this lock pin is pushed in, the lock pin gets over the base cylinder. The fitted cylinder that can be slid by the base cylinder is fitted, and the top of the lock pin is engaged with the inner peripheral surface of the fitted cylinder to provide an engagement groove for fixing the slide of the fitted cylinder. A recessed universal joint portion into which the universal joint portion is fitted is provided on the front side, and a rear body is provided with a coupling portion on the rear side that is coupled to the electric rotating tool, and the universal joint is coupled to the universal joint portion. This forms a universal joint to flexibly connect the front and rear bodies, The rear end open end of the fitted cylinder that slides backward is brought into contact with the front end open end of the rear body provided with the universal joint portion, and the lock pin is projected to fix the fitted cylinder. Thus, the joint tool for the electric rotating tool is configured so that the series state of the base cylinder and the rear body is maintained. 4. The joint tool for an electric rotating tool according to claim 1, wherein the fitting cylinder has a substantially zigzag shape with both front and rear ends having a large diameter. A joint tool for electric rotating tools, which is characterized by being adopted.